JPH0340683A - Picture reproducing device and picture reproducing method - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention is a method for recording image data consisting of low-resolution bitmap data and run-length encoded compression-corrected luminance data used to correct the resolution. The present invention relates to an image reproducing device and an image reproducing method for reproducing recorded media.

A return to conventional technology Lower prices and larger capacities of semiconductor memories Emergence of optical disks as large-capacity recording media Digital processing of images is becoming more popular as data processing devices become more sophisticated. For example, image data is divided into low-resolution bitmap data and run-length encoded compression corrected luminance data for correcting the resolution and recorded on a recording medium, and then combined during playback to create a high-resolution image. A method has been devised to output the .

A conventional image reproducing device will be described below with reference to the drawings. Figure 9 shows the block block diagram of a conventional image reproducing device.
Figure 10 shows a schematic diagram of image data in a recording medium. Figure 11 is a block diagram of an encoder for image data. 5 is a temporary storage decoder that stores the compressed corrected luminance data 15 outputted from the separating means 22; 46 is a run-length decoder that decodes the compressed corrected brightness data in the temporary storage means 5; Method 7 is a video signal output means that combines bitmap data 14 and decoded corrected brightness data 17 and outputs it as a video signal. In FIG. 10, 91 and 93 are bitmap data 92.94
is compressed corrected luminance data, and bitmap data 91
The bitmap data 93 and the compressed corrected brightness data 94 form the image data of the image B. In Figure 11, 111 is Y, UV
The conversion code 112 is a filter, 113 is a DYUV conversion code, 1 is a subtraction code, and 15 is a run-length encoding unit.
Y indicates brightness 1. UV indicates color difference.

The operation of the image reproducing apparatus configured as described above will be described below, but first, the data format of two-image data will be described using diagram il1. An original image with a resolution of 784x560 is input to the YUV conversion means 111 and converted to 768x56.
0 high resolution YUV data. The high-resolution YUV data is passed through a filter 112 to
It is converted to 4X280 low resolution YUv data. This low-resolution YUV data is compressed into difference YUV data (hereinafter abbreviated as DYUV data) by taking the difference between adjacent pixels in the DYUV conversion means 113.
Since YUV data has data corresponding to each pixel, it is said to be bitmap data.On the other hand, 768x560 high resolution luminance data output from YUV conversion means 111 and 384x2 high resolution brightness data output from filter 112
The subtraction means 114 calculates the difference between the low-resolution luminance data of 80 and outputs the corrected luminance data.The corrected luminance data is subjected to run-length encoding processing by the run-length encoding means 115 and output as compressed corrected luminance data. be done. Run-length encoding is a method of compressing the consecutive lengths of consecutive same values by converting them into numbers, and is a data format that has two types of attributes: value and length. Therefore, the amount of compressed corrected luminance data differs depending on the image to be recorded. For example, a complex image with many edges requires a large amount of compressed corrected brightness data, and a flat image with few edges requires a small amount of compressed corrected brightness data. On the other hand, the amount of bitmap data is determined by the number of pixels, so the amount of data is the same for all images. This method takes advantage of the fact that the human eye is more sensitive to changes in brightness than changes in color, and increases the apparent resolution by adding high-resolution brightness information to low-resolution images. Next, the process from when these data are recorded on a recording medium to being displayed on an image reproducing device will be explained with reference to FIGS. 9 and 10. In FIG. 1O, the horizontal axis indicates the time axis. The recording medium is abbreviated as compact disk read-only memory (hereinafter referred to as CI)-ROM. )
is used.

Image A and image B are recorded on the CD-ROM in a distributed manner on the time axis, and during playback, image A is played from time tl to t2 and image B is played from time t3 to t4. lO is output from the regeneration means 1 and sent to the separation means 24. The image data 10 inputted to the separating means 24 is separated into compressed corrected brightness data 15 and bitmap data 14, and each is stored in the time storage means 5.
bitmap data 14 which is DYUV data with a resolution of 'i' 384 x 280 is sent to the video signal output means 7.
is converted into low-resolution YUV data in the video signal output means 7, and then interpolated to produce 768x560 YUV data.
The data is decompressed and stored in an internal video memory (not shown). On the other hand, the compressed corrected brightness data stored in the - time storage means 5 is decoded by the run length decoding means 46 and sent to the video signal output means 7 as decoded corrected brightness data. An operation opposite to length encoding means 115 is performed. In other words, the plate compression corrected luminance data undergoes run-length decoding processing and becomes 768x560.
Even if the corrected brightness data is converted into decoded corrected brightness data 17, the corrected brightness data is requantized during run-length encoding and then run-length compressed. , % The decoded corrected brightness data 17 is sent to the video signal output means 7 and added to the 768x560 brightness data stored in the video memory. The video signal output means 7 is a high-resolution YU with brightness corrected stored in the internal video memory.
Converts data to a video signal and outputs it.

Using the above method, the image power t is divided into two types of data: bitmap data with low resolution and compression corrected brightness data for correcting the resolution and recorded on the recording medium.
Even if they are synthesized during playback and output as a high-resolution image (for example, "I.C.C.E.
A.L.L.E.I/D.H.B.M. 14.2 (ICCE 87/THU
R8DAY, JUNE 4.1987 /LASA
LLE I/THPM14.2) J 182-18
Page 3) Problems to be Solved by the Invention In the above configuration, image data is output one after another from the compact disc.

Furthermore, since the amount of compressed and corrected luminance data differs depending on the image, the time required for decoding it differs from image to image. Therefore, the next image data may be output before the end of the decoding process, resulting in an overflow of brightness data and a problem in that a normal output image cannot be obtained. An object of the present invention is to provide an image reproducing device and an image reproducing method that can process compressed and corrected luminance data according to the capability of the image reproducing apparatus.

Means for Solving the Problems In order to solve the above problems, an image reproducing apparatus according to claim 1 of the present invention (a reproducing means for reproducing a recording medium and outputting image data, and an image for detecting the start of output of image data) 1. a data output detection means; a selection means for controlling sending of the reproduced image data to the next stage; and a separation means for separating the image data output from the selection means into bitmap data and compression corrected luminance data; 1. temporary storage means for storing compressed corrected brightness data; run-length decoding means for decoding the compressed corrected brightness data stored in said temporary storage means and outputting decoded corrected brightness data; and said bitmap data and said decoded correction. video signal output means for converting luminance data into a video signal and outputting the video signal; and control for controlling the selection means so as not to send the image data to the next stage unless the decoding process is completed at the time the image data is output. It has a configuration that includes means.

In addition, in the image reproduction method according to claim 2 of the present invention, the second image data or the compression-corrected luminance data of the second image data is generated before the second image data at the time when output from the recording medium is started. The image according to claim 3 of the present invention is further characterized in that the second image data is discarded if the decoding process of the compressed and corrected luminance data of the output first image data is not completed. The reproducing device includes a reproducing means for reproducing a recording medium and outputting image data, an image data output detecting means for detecting the start of output of image data or compression corrected luminance data, and converting the image data output from the reproducing means into bitmap data. temporary storage means for storing the compressed corrected brightness data; and a run length for decoding the compressed corrected brightness data stored in the temporary storage means and outputting the decoded corrected brightness data. a decoding means; a video signal output means for converting the bitmap data and the decoded correction luminance data into a video signal and outputting the video signal; The apparatus includes a control means for stopping the decoding process of the means and for instructing the video output means to output a video signal using only bitmap data.

Further, the image reproduction method according to claim 4 of the present invention (wherein the second image data or the compressed corrected luminance data of the second image data is generated before the second image data at the time when output from the recording medium is started) If the decoding process of the compressed and corrected luminance data of the first image data outputted to the first image data is not completed, only the bitmap data of the first image data is converted into a video signal and outputted. Amata Image reproducing apparatus according to claim 5 of the present invention (1) Reproducing means for reproducing a recording medium and outputting image data; Image data output detecting means for detecting the start of outputting image data or compressed corrected luminance data; separating means for separating the image data output from the reproduction means into bitmap data and compressed corrected brightness data; temporary storage means for storing the compressed corrected brightness data; and a separating means for storing the compressed corrected brightness data stored in the temporary storing means. run-length decoding means for performing a decoding process and outputting decoded corrected luminance data; video signal output means for converting the bitmap data and the decoded corrected luminance data into a video signal and outputting the same; The present invention may further include a control means for controlling the reproduction means so as to stop the image data output operation until the decoding process is completed if the decoding process is not completed. 7. The image reproduction method according to claim 6, wherein the second image data or the compression-corrected luminance data of the second image data is output before the second image data at the time when output from the recording medium is started. If the decoding process of the compressed corrected brightness data of the first image data is not completed, the second image data or the compressed corrected brightness data of the second image data is output from the recording medium after the decoding process is completed. The recording medium is configured to temporarily stop reproduction of the recording medium so that the recording medium is played back.

An image reproducing apparatus according to claim 7 of the present invention (reproducing means for reproducing a recording medium in which a plurality of friend image data are recorded together with management data including time interval information of the image data,
selection means for controlling sending of the output signal of the reproduction means to the next stage; separation means for separating the output signal of the selection means into bitmap data, compression corrected luminance data and management data; and compression correction luminance data. a temporary storage means for storing
run-length decoding means for decoding the compressed corrected luminance data stored in the temporary storage means and outputting decoded corrected luminance data; and converting the bitmap data and the decoded corrected luminance data into a video signal and outputting the same. Calculate the processing time necessary for the decoding process from the video signal output means and the amount of compressed corrected luminance data stored in the temporary storage means, and use the time interval information included in the management data and the processing time. If it is determined that the decoding process does not end before the start of outputting the next image data or the start of outputting the compression-corrected luminance data of the next image data, the image data output from the reproduction means is then sent to the next stage. The present invention is provided with a control means for controlling the selection means so that the selection means is not selected.

Further, the image reproducing method according to claim 8 of the present invention reproduces a recording medium in which a plurality of image data are recorded together with management data including time interval information of the image data, and the first image data output from the recording medium is reproduced. detecting the data amount of the compressed corrected brightness data, and calculating the processing time required to perform decoding processing of the compressed corrected brightness data of the first image data from the data amount, using the time interval information and the processing time; It is determined that the decoding process does not end before the start of output of second image data to be output from the recording medium after the first image data or the start of output of compression corrected luminance data of the second image data. In this case, the second image data is discarded.

Further, an image reproducing apparatus according to claim 9 of the present invention (reproducing means for reproducing a recording medium in which a plurality of graphic image data are recorded together with management data including time interval information of the image data,
separation means for separating the output signal of the reproduction means into bitmap data, compressed corrected luminance data and management data; selection means for controlling sending of the compressed corrected luminance data outputted from the separating means to the next stage; temporary storage means for storing compressed corrected brightness data outputted from the selection means; run-length decoding means for decoding the compressed corrected brightness data stored in the temporary storage means and outputting decoded corrected brightness data; and the bits. A video signal output means converts the map data and the decoded corrected brightness data into a video signal and outputs the same, and calculates the processing time required for the decoding process from the data amount of the compressed corrected brightness data stored in the temporary storage means. If it is determined, using the time interval information included in the management data and the processing time, that the decoding process will not end before the start of outputting the next image data or the start of outputting the compression-corrected luminance data of the next image data. , the selection means is controlled so as not to send the compressed corrected luminance data of the image data to be output next to the next stage [- the video signal using only bitmap data as the video signal of the image data to be output next; The present invention has a configuration including a control means for controlling the video signal output means so as to output the video signal output means.

and an image reproducing method according to claim 10 of the present invention, comprising: reproducing a recording medium in which a plurality of image data are recorded together with management data including time interval information of the image data; and first image data output from the recording medium. Detecting the data amount of the compressed corrected brightness data of the first image data, calculating the processing time necessary to decode the compressed corrected brightness data of the first image data from the data amount, and using the time interval information and the processing time. It is determined that the decoding process will not end before the start of outputting the second image data to be output from the recording medium after the ml image data or the start of outputting the compressed corrected luminance data of the second image data. In this case, a video signal using only bitmap data is output as the video signal of the second image data.

Mana Image reproducing apparatus according to claim 11 of the present invention (1) reproducing means for reproducing a recording medium on which a plurality of image data are recorded together with management data including time interval information of the image data; Separation means for separating map data, compression corrected brightness data and management data;
temporary storage means for storing compressed corrected brightness data; run-length decoding means for decoding the compressed corrected brightness data stored in said temporary storage means and outputting decoded corrected brightness data; and said bitmap data and said decoded correction. A video signal output means for converting the brightness data into a video signal and outputting the video signal, and a processing time required for the decoding process calculated from the data amount of the compressed corrected brightness data stored in the temporary storage means, and included in the management data. If it is determined that the decoding process will not end before the start of outputting the next image data or the start of outputting the compression-corrected luminance data of the next image data using the time interval information and the processing time, the decoding process is stopped. The present invention includes a control means for controlling the run-length decoding means so as to convert only the input bitmap data into a video signal and outputting the video signal output means.

Further, the image reproducing method according to claim 12 of the present invention (above) reproducing a recording medium in which a plurality of image data are recorded together with management data including time interval information of the image data, and first image data output from the recording medium. Detecting the data amount of the compressed corrected brightness data of the first
calculates the processing time required to decode the compression-corrected luminance data of the image data of the first image data, and calculates the processing time necessary to decode the compressed corrected luminance data of the image data of If it is determined that the decoding process is not completed before the output of the second image data or the compressed and corrected luminance data of the second image data starts, only bitmap data is used as the video signal of the first image data. It is equipped with a configuration that outputs a video signal using .

The image reproducing apparatus 1 according to claim 13 of the present invention further comprises: a reproducing means for reproducing a recording medium on which a plurality of image data are recorded together with management data including time interval information of the image data; Separation means for separating map data, compression corrected brightness data and management data;
temporary storage means for storing compressed corrected brightness data; run-length decoding means for decoding the compressed corrected brightness data stored in said temporary storage means and outputting decoded corrected brightness data; and said bitmap data and said decoded correction. A video signal output means for converting the brightness data into a video signal and outputting the video signal, and a processing time required for the decoding process calculated from the data amount of the compressed corrected brightness data stored in the temporary storage means, and included in the management data. If it is determined using the time interval information and the processing time that the decoding process will not end before the start of outputting the next image data or the start of outputting the compression-corrected luminance data of the next image data, the decoding process ends. Claims of the present invention further include a control means for controlling the reproduction means so as to output the next image data or compressed corrected luminance data of the next image data after the image data is processed. The image reproducing method described in 14 includes reproducing a recording medium in which a plurality of image data are recorded together with management data including time interval information of the image data, and compressing and correcting brightness data of the first image data output from the recording medium. detecting the amount of data, calculating the processing time required to decode the compressed and corrected luminance data of the first image data from the amount of data, and calculating the processing time necessary for decoding the compressed and corrected brightness data of the first image data using the time interval information and the processing time; If it is determined that the decoding process does not end before the start of the output of the second image data output from the recording medium after , or the start of the output of the compressed corrected luminance data of the second image data, the decoding process The apparatus is configured to temporarily stop reproduction of the recording medium so that the second image data or the compression-corrected luminance data of the second image data is output from the recording medium after the reproduction is finished. be.

Effect of the Invention With the above-described configuration, the present invention is capable of processing image data that is successively reproduced regardless of the capability of the image reproducing device, and outputs the data on the screen according to the capability of the device.

Embodiment Hereinafter, an image reproducing apparatus according to an embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a block diagram of an image reproducing apparatus according to a first embodiment of the present invention. FIG. 2 is a block diagram of an image reproducing device. In FIG. 1, 1 indicates the reproduction means, 2 indicates the detection of image data output, and 3 indicates the selection statement 4 for controlling sending of the image data 10 outputted from the reproduction means 1 to the next stage.
5 is a separation method for separating the image data outputted from the selection means 3 into bitmap data 14 and compressed corrected brightness data 15; 5 is a temporary storage log for temporarily storing the compressed corrected brightness data 15 outputted from the separating means 4; 6 7 is a run-length decoding means that decodes compressed corrected luminance data and outputs decoded corrected luminance data; 7 is a video signal output method that converts the bitmap data 14 and decoded corrected luminance data 17 into a video signal; and 8 is a selection. This is a control means for controlling the means 3.

Regarding the image reproducing device configured as above, the following is Part 1@
The operation will be explained using FIG. 1O, but the data format of the image data recorded on the recording medium and the recording position within the recording medium are the same as in the conventional example. In other words, the image data created by performing the processing shown in FIG. 11 is recorded at the recording position shown in FIG. 1O. Also time t
It is assumed that the decoding process of the compressed corrected luminance data outputted from the recording medium before l has been completed. Therefore, the explanation is omitted here.

The image data output detection means 2 monitors the image data 10 output from the reproduction means 1, and outputs data output start information 12 to the control means 8 at times tl and tl. The run-length decoding means 6 has completed the decoding process of the compressed corrected luminance data stored in the temporary storage means 5 before time tl. Even if the decoding process completion information 13 has already been sent to the control means 8, in this state. When the image A is output from the reproducing means 1 at time tl, the image data output detecting means 2 outputs data output start information 12. The control means 8 instructs the selection means 3 to send the image data A to the separation means 4 if the input of the decoding process end information 13 is earlier than the input of the data output start information 12. The separating means 4 separates the input image data A into bitmap data 91 and compressed corrected luminance data 92. The compressed corrected luminance data 92 outputted from the separating means 4 is stored in the temporary storage means 5, sequentially decoded by the run-length decoding means 6, and sent as decoded corrected luminance data 17 to the video signal output means 7. The run-length decoding means 6 sends decoding processing completion information 13 to the control means 8 when the decoding processing of the compressed corrected luminance data 92 is completed. The video signal output means 7 converts the image A into a high-resolution video signal using the bitmap data 91 and the decoded corrected luminance data 17 using a method similar to that shown in the conventional example and outputs the converted video signal. If the decoding process of the compressed corrected luminance data 92 in the run-length decoding means 6 ends earlier than time tl,
Similar processing is performed on image B, and image B converted into a high-resolution video signal is output by the video signal output means 7. If the end of the decoding process of the compressed corrected luminance data 92 in the run-length decoding means 6 is later than time tl, the control means 8 sends an image data discard command 100 to the selection means 3, and the selection means 3 Image B is discarded according to the image data discard instruction 100.

As described above, according to this embodiment, the image reproducing apparatus includes an image data output detecting means for detecting the start of outputting image data from the reproducing means, and a selecting means for controlling sending of the reproduced image data to the next stage. By providing a control means for controlling the selection means so as not to send the image data to the next stage if the decoding processing is not completed at the time the image data is output, the image data can be sent one after another regardless of the capacity of the image reproduction device. When processing the image data to be played back, it is possible to perform processing according to the capabilities of the device, convert it into a video signal, and output it. Fig. 2 shows a block diagram of an image playback device in a second embodiment of the present invention. FIG. 2 is a block diagram of an image reproducing apparatus according to an embodiment of the present invention, which reproduces a recording medium using an image reproducing apparatus according to a third aspect of the present invention and an image reproducing method according to a fourth aspect of the present invention. In FIG. 2, 1 is a reproduction means, and 22 is an image data output detection method.
24 is a separation method for separating the image data 10 output from the reproduction means 1 into bitmap data 14 and compression corrected brightness data 15; 5 is a temporary storage method; 26 is a run-length decoding method a; 27 is a video signal output method; 28 is a run method. The operation of the image reproducing apparatus configured as described above with the control means for controlling the length decoding means 26 and the video signal outputting means 27 will be explained below with reference to FIG. 10.

The data format of the image data recorded on the recording medium and the recording position within the recording medium are the same as in the first embodiment. It is also assumed that the decoding process of the compressed and corrected luminance data output from the recording medium before time tl has been completed. The operations of the reproducing means 1 and the temporary storage means 5 have been explained in the conventional example, so the explanation thereof will be omitted here.

The image data output detection means 22 monitors the image data 10 output from the reproduction means 1, and detects the time tl and the time t3.
The data output start information 12 is outputted to the control means 28. If the run-length decoding means 26 has finished decoding the compressed corrected luminance data stored in the temporary storage means 5 before time t1, it has already sent the decoding process completion information 13 to the control means 28. In this state, image A is at time tl
When the image data A is outputted from the reproduction means 1, the separation means 24 separates the input image data A into bitmap data 91 and compressed corrected luminance data 92. The compressed corrected luminance data 92 outputted from the separation means 24 is stored in the temporary storage means 5 and sequentially decoded by the run length decoding means 26. When this decoding process is completed before time t3 (the run-length decoding means 26 sends the decoding process completion information 13 to the control means 28 at the time when the decoding process is completed, the decoding correction luminance data 17 is sent to the video signal output means 27). The video signal output means 27 converts the image A into a high-resolution video signal using the bitmap data 91 and the decoded correction luminance data 17 using the same method as that shown in the conventional example and outputs it. If the end of the decoding process of the compressed corrected brightness data 92 in the means 26 is later than time t3, the image data output is detected before the decoding process end information of the immediately compressed corrected brightness data 92 is input to the control means 28. Means 2
2 detects the start of output of image B from the reproduction means 1 and sends data output start information 12 to the control means 28, the control means 28 sends a decoding process stop command 18 to the run length decoding means 26, and the video signal The run-length decoding means 26 sends the bitmap video output command 19 to the output means 27.
2. Cancel the decoding process. Also, video signal output means 27
is the separating means 2 according to the bitmap video output command 19.
Only the bitmap data 91 input from 4 is converted into a video signal and output. That is, image A is converted into a low-resolution video signal using only bitmap data and output.

As described above, according to this embodiment, an image reproducing apparatus (ζ) includes an image data output detection means for detecting the start of output of image data, and decoding of compressed correction luminance data that was previously output at the time when the image data was output. The performance of the image reproducing apparatus can be improved by providing a control means that stops the decoding process of the run-length decoding means and instructs the video output means to output a video signal using only bitmap data if the processing has not been completed. When processing image data that is reproduced one after another regardless of the image data, it is possible to perform processing according to the capabilities of the device, convert it into a video signal, and output it.

FIG. 3 is a block diagram of an image reproducing apparatus according to a third embodiment of the present invention. FIG. 2 is a block diagram of an image reproducing device. In Fig. 3, 31 is reproduction height 22 is image data output detection method 2
4 is a separation means, 5 is a temporary storage unit, 6 is a run length decoding means, 7 is a video signal output means, 38 is a reproduction means 31
It is a control means for controlling the

Below is 13@ regarding the image reproducing device configured as above.
The operation will be explained using FIG.

The data format of the image data recorded on the recording medium and the recording position within the recording medium are the same as in the first embodiment. It is assumed that the decoding process of the compressed and corrected luminance data output from the recording medium before time tl has been completed. Further, the operations of the separating means 24, the temporary storage means 5, and the video signal output means 7 are those of the conventional example, the operations of the run-length decoding means 6 are those of the first embodiment, and the operations of the image data output detecting means 22 are those of the second embodiment. Since each is explained with an example, the explanation will be omitted here, but the run-length decoding means 6 has completed the decoding process of the compressed corrected luminance data stored in the temporary storage means 5 before time ti. The end information 13 has already been sent to the control means 3.
I am sending it to 8th. If the run-length decoding means 6 completes the decoding process of the compressed corrected luminance data 92 by time t3, then
The control means 38 does nothing and the reproduction means 31 continues normal reproduction.

If the end of the decoding process of the compressed corrected luminance data 92 is later than time t3, the image data output detecting means 22 is When the start of output of image B from the reproduction means 31 is detected and data output start information 12 is sent to the control means 38, the control means 38 uses the reproduction means control signal 101 to stop the reproduction operation of the reproduction means 31. This reproducing means 31 receives the reproducing means control signal 10.
1, the decoding process is kept in a stopped state until the decoding process end information 13 is output from the run-length decoding means 6.

As described above, according to this embodiment, the image reproducing apparatus includes an image data output detection means for detecting the start of output of image data, and a decoding process for compressed and corrected luminance data that was previously output at the time when the image data was output. has not finished
By providing a control means for controlling the reproduction means to stop the image data output operation until the decoding process is completed, it is possible to process image data that is reproduced one after another regardless of the capacity of the image reproduction apparatus. It is possible to perform processing according to the capabilities of the device, convert it into a video signal, and output it.

In the second and third embodiments described above, the image data output detection means detects the output of image data output from the reproduction means and outputs data output start information. Although the same effect can be obtained by detecting the start of output of the compressed corrected brightness data output from the means and outputting the data output start information, FIG. 4 is a block diagram of an image reproducing apparatus according to a fourth embodiment of the present invention. This is a block diagram of an image reproducing apparatus according to an embodiment that reproduces a recording medium using the image reproducing apparatus according to claim 7 and the image reproducing method according to claim 8 of the present invention. FIG. 8 is a schematic diagram of image data in a recording medium in an embodiment of the present invention.

In FIG. 4, 41 is a reproduction means, 43 is a selection means for controlling sending of the output signal 11 outputted from the reproduction means 41 to the next stage, and 44 is a means for compressing the output signal from the selection means 3 into bitmap data 14. Separation method for separating corrected brightness data 15 and management data 16 45 is a temporary storage means for temporarily storing the compressed corrected brightness data 15 output from the separating means 44; 46 is a decoded corrected brightness data for decoding the compressed corrected brightness data; Run length decoding means for outputting data 17; 7 is video signal output means; 48 is selection means 43
It is a control means for controlling the

In FIG. 8, 81 and 84 are management data, 82 and 85 are bitmap data, and 83 and 86 are compressed and corrected brightness data. The compressed and corrected luminance data 86 constitutes the image data of image B.

Regarding the image reproducing device that has been disassembled as described above, the following is the 4th @
The operation will be explained using FIG.

The image data is created by performing the processing shown in FIG. 11, and is recorded in a recording medium together with management data 81 and 84. The time until the next image data is output is recorded in the management data 81 and 84 as time interval information of one image data.

For example, even if the time interval from t2 to t3 is recorded in the management data 81, it is assumed that the decoding process of the compressed corrected luminance data output from the recording medium before time tl has been completed. The operation of the video signal output means 7 has been explained using a conventional example, so it will not be described here. However, the reproduction means 41 reproduces the recording medium on which the data shown in FIG. 8 is recorded and outputs data in order from the management data 81. Since the decoding process of the compressed corrected brightness data output from the recording medium has been completed before time tl, the control means 48 sends the image data A and the management data 81 to the selection means 43 to the separation means 44. The separation means 44 extracts management data 81, bitmap data 82,
The compressed corrected luminance data 83 is separated and sent to the control means 48, the video signal output means 7, and the -time storage means 45, respectively. - The compressed corrected luminance data 83 stored in the time storage means 45 is stored in the run length decoding means 4 as shown in the conventional example.
6, the data is decoded and sent as decoded corrected luminance data 17 to the video signal output means 7. The video signal output means 7 converts the image A into a high-resolution video signal using the bitmap data 82 and the decoded corrected luminance data 17 using a method similar to that shown in the conventional example and outputs it. The data amount of the compressed corrected luminance data 83 stored in the temporary storage means 45 is detected using the data amount detection signal 20. The data amount detection signal 20 (friend data salt) is separated from the control line. The amount of corrected luminance data 83 is notified.The control means 48 receives the received management data 8.
1 and the data amount to determine whether the decoding process of the compressed corrected luminance data 83 can be completed by time t3. The run-length decoding means 46 calculates the processing time required for the decoding process from the data amount, compares this processing time with time interval information included in the management data 81, and determines whether the decoding process can be completed. Even if the decoding process can be completed (number), the same processing is performed for image B, and the image B converted to a high-resolution video signal is output by the video signal output means 7. If the control means 48 determines that the decoding process cannot be completed. Then, the next image data discard command 10 is sent to the selection means 43.
Send 2. The selection means 43 is the next image data discard command 102
Accordingly, the image B output from the reproduction means 4I is discarded without being sent to the next stage.

As described above, according to this embodiment, a plurality of pieces of image data are recorded on a recording medium together with management data including time interval information of the image data, and the image reproduction device controls the sending of the output signal of the reproduction means to the next stage. means, separation means for separating the output signal of the selection means into bitmap data, compressed corrected brightness data and management data, and processing necessary for decoding processing from the data amount of the compressed corrected brightness data stored in the temporary storage means. If it is determined by calculating the time and using the time interval information included in the management data and the processing time that the decoding process will not be completed before the start of outputting the next image data, the next image to be output from the reproduction means. By providing a control means for controlling the selection means so as not to send the data to the next stage, when processing image data that is successively played back regardless of the capacity of the image playback device, processing is performed according to the capacity of the device. FIG. 5 is a block diagram of an image reproducing apparatus according to a fifth embodiment of the present invention. FIG. 5 is a block diagram of an image reproducing apparatus according to an embodiment of the present invention which reproduces a recording medium using an image reproducing method. In FIG. Separation method for separating brightness data 15 and management data 16 53 is a selection means for controlling sending of the compressed corrected brightness data 15 outputted from the separation means 54 to the next stage; 55 is a selection means 53
46 is a run-length decoding means; 57
58 represents a video signal output means, and 58 represents a control means for controlling the selection means 53 and the video signal output means 57.

The operation of the image reproducing apparatus configured as described above will be explained below with reference to the fifth block and FIG. 8.

The data format of the image data recorded on the recording medium and the recording position within the recording medium are the same as in the fourth embodiment. 1. It is assumed that the decoding process of the compressed corrected luminance data output from the recording medium before time tl has been completed. Also, the playback means 41 and the run length decoding means 46
Since the operation has been explained in the fourth embodiment, the explanation will be omitted here.

Now, when image A is output from the reproducing means 41 at time tl, the separating means 54 separates the output signal 11 of the reproducing means 41 into management data 81, bitmap data 82, and compression corrected luminance data 83, and the control means 58 respectively. , video signal output means 57, and selection means 53. Since the decoding process of the compressed corrected luminance data outputted from the recording medium before time tl has been completed, the control means 58 instructs the selection means 53 to send the compressed corrected luminance data 83 to the temporary storage means 55. . - The compressed corrected brightness data 83 stored in the time storage means 55 is decoded and sent to the video signal output means 57 as decoded corrected brightness data 17. The video signal output means 57 converts the image A into a high-resolution video signal using the bitmap data 82 and the decoded corrected luminance data 17 using a method similar to that shown in the conventional example and outputs the converted video signal. The control means 58 uses the method shown in the fourth embodiment to determine whether the decoding process of the compressed corrected luminance data 83 in the temporary storage means 55 can be completed by time t3. Image B if possible
Similar processing is also performed on the video signal output means 5.
At step 7, a high-resolution video signal of image B is output. if
If the control means 58 determines that the decoding process is not completed, it sends a next compressed luminance data discard command 103 to the selection means 53, and sends a next bitmap video output command 21 to the video signal output means 57. The selection means 53 receives the next compressed luminance data discard command 103 and discards the compressed corrected luminance data 86 of the image B which is then outputted from the separation means 54. On the other hand, the normal image signal output means 57 outputs the next bitmap image output command 2.
1, bitmap data 85 for image B.
Generates a video signal using only Joint plate image B is output as a low-resolution video signal.

As described above, according to the present embodiment, image data is recorded on a plurality of recording media together with management data including time interval information of the image data, and the output signal of the reproduction means is sent to the image reproduction device as bitmap data and compression-corrected luminance data. a separating means for separating the compressed corrected brightness data into management data; a selecting means for controlling sending of the compressed corrected brightness data outputted from the separating means to the next stage; The processing time required for the decoding process is calculated, and if it is determined that the decoding process will not be completed before the start of outputting the next image data using the time interval information included in the management data and the processing time, the next image data will be output. The selection means is controlled so as not to send the compression corrected brightness data of the image data to be output to the next stage, and the selection means is controlled so as to output a video signal using only bitmap data as the video signal of the image data to be output next. By providing a control means for controlling the signal output means, when processing image data that is successively reproduced regardless of the ability of the image data display device, it is possible to process the image data according to the ability of the device and convert it into a video signal. It can be output.

FIG. 6 shows a solid block image of an image reproducing apparatus according to a sixth embodiment of the present invention. FIG. 2 is a block diagram of a playback device. In FIG. 6, 41 is a reproduction means, 54 is a separation means, 45 is a temporary storage, 66 is a run-length decoding method, 27 is a video signal output method, and 68 is a control means for controlling the run-length decoding means 66 and the video signal output means 27. It is.

The operation of the image reproducing apparatus configured as described above will be explained below using FIG. 6 and FIG.

The data format of the image data recorded on the recording medium and the recording position within the recording medium are the same as in the fourth embodiment.Decoding of compressed corrected luminance data output from the recording medium before time tl It is assumed that the processing has ended. Further, the operations of the reproduction means 41 and the temporary storage means 45 are explained in the fourth embodiment, the operation of the video signal output means 27 is explained in the second embodiment, and the operation of the separation means 54 is explained in the fifth embodiment. Therefore, the explanation will be omitted here.

Now, image A is output from the reproduction means 41 at time tl.
The output signal 11 is separated by the separation means 54 into management data 81, bitmap data 82, and compression corrected luminance data 83, and sent to the control means 68, the video signal output means 27, and the -time storage means 45, respectively. - Compressed corrected brightness data 83 in the time storage means 45 (sequential run length decoding means 66
decrypted with The run-length decoding means 66 sends the decoded corrected luminance data 17 to the video signal output means 27 when the decoding process is completed. The control means 68 uses the method shown in the fourth embodiment to determine whether the decoding process of the compressed corrected luminance data 83 in the temporary storage means 45 can be completed by time t3. If it is determined that it is impossible, the control means 68 sends a decoding process stop command 18 to the run-length decoding means 66,
Bitmap video output command 19 to video signal output means 27
send. The run-length decoding means 66 stops the decoding process of the compressed corrected luminance data 92 in accordance with the decoding process stop command 18 . Further, the video signal output means 27 follows the bitmap video output command 19 as shown in the second embodiment.
Only the bitmap data 82 input from the separating means 54 is converted into a video signal and output. The knot image A is converted into a low-resolution video signal using only bitmap data and output.

As described above, according to the present embodiment, a plurality of image data ('L) are recorded on a recording medium together with management data including time interval information of the image data, and the output signal of the reproduction means is sent to the image reproduction apparatus as bitmap data and compression correction brightness. separation means for separating the data and management data, and calculating the processing time necessary for the decoding process from the data amount of the compressed corrected luminance data stored in the temporary storage means, and the time interval information included in the management data and the processing. If it is determined that the decoding process will not be completed before the output of the next image data starts using the time, the run-length decoding means is controlled to stop the decoding process.
By providing a control means for controlling the video signal output means so as to convert only input bitmap data into a video signal and output it, it is possible to process image data that is reproduced one after another regardless of the capacity of the image reproduction device. When doing so, it can be processed according to the capabilities of the device, converted into a video signal, and output.

FIG. 7 is a block diagram of an image reproducing apparatus according to a seventh embodiment of the present invention. FIG. 2 is a block diagram of an image reproducing device. In FIG. 7, 71 is a reproduction method, 54 is a separation means, 45 is a temporary storage means, 46 is a run-length decoding means, 7 is a video signal output means, and 78 is a control means for controlling the reproduction means 31.

The operation of the image reproducing apparatus configured as described above will be explained below using FIGS. 7 and 8.

The data format of the image data recorded on the recording medium and the recording position within the recording medium are the same as in the fourth embodiment. It is also assumed that the decoding process of the compressed corrected luminance data outputted from the recording medium is completed before time tl. Further, the operation of the video signal output means 7 is the conventional example, and the operation of the - time storage means 45 and the run length decoding means 46 is the same as that of the fourth example.
In the fifth embodiment, the operation of the separating means 54 has been explained in the fifth embodiment, so the explanation thereof will be omitted here. 7 Now, the image A is output from the reproducing means 71 at time tl, and the output signal 11 is separated by the separating means 54 into management data 81, bitmap data 82, and compression corrected brightness data 83, which are respectively controlled by the control means 78 and the video signal output means 7. , - is sent to the time storage means 45. - The compressed corrected brightness data 83 in the time storage means 45 is sequentially decoded and sent to the video signal output means 7. It is determined whether the decoding process of the compressed corrected brightness data 83 can be completed. If it is determined that it is possible, the control means 78 does nothing and the reproduction means 71 continues normal reproduction. Then, after the run-length decoding means 46 finishes decoding the compressed corrected luminance data 83, the image B is transferred to the reproduction means 7.
1, the control means 78 temporarily stops the reproduction operation of the reproduction means 71 using the reproduction means control signal 101.

As described above, according to the present embodiment, image data is recorded on a plurality of recording media together with management data including time interval information of the image data, and the output signal of the reproduction means is sent to the image reproduction device as bitmap data and compression-corrected luminance data. Calculates the processing time required for decoding processing from the separation means for separating into management data and the amount of compressed corrected luminance data stored in the temporary storage means, and uses the time interval information included in the management data and the processing time. control means for controlling the reproducing means to output the next image data after the decoding process is completed when it is determined that the decoding process is not completed before the output of the next image data starts. Therefore, it is possible to process the image data that is reproduced one after another regardless of the capability of the image reproducing device, and to convert it into a video signal and output it according to the capability of the device.

In addition, in the fourth, fifth, and seventh embodiments described above, the data amount of the compressed corrected brightness data is detected using the data amount detection signal, but the data amount information of the compressed corrected brightness data is also recorded as power management data. The control means may use the data amount information to calculate the processing time required for the run-length decoding means to decode the compressed corrected luminance data stored in the temporary storage means (1 In the fourth, fifth, sixth, and seventh embodiments described above, the length time interval information is limited to this because the time length of the area where no data is recorded between image data is recorded as the time interval information. Hana ('V) For example, the time of the next image and the current time may be recorded as time interval information, and the control means may calculate the time until the next image is output. The time until the compressed corrected luminance data of the next image data is output is recorded as interval information, and the control means determines whether the decoding process is completed before the next compressed corrected luminance data is output. There is no problem.

In addition, in the fourth, fifth, sixth, and seventh embodiments described above, since the management information is recorded before each image data, the management information of the height name image is recorded on the recording medium all at once, and the image data is reproduced. It may be read into the control means in advance.

Mana above 1st, 2nd, 3rd, 4th, 5th, 6th, 7th
In this example, each image is recorded on the recording medium in the order of bit map data, compression correction brightness data,
The recording order is not limited to this, and there is no problem even if the compression-corrected luminance data is recorded before the bitmap data, or if the bitmap data and compression-corrected luminance data are recorded together.

Mat 2 In the first, second, third, fourth, fifth, sixth, and seventh embodiments described above, the recording medium is explained using CI>ROM as an example. Of course, the recording medium is not limited to this. Various recording media can be used. For example, you can record image data on the subcode channel of a digital audio chip or compact disc, or use any recording medium that can record digital data, such as a magneto-optical disc or a hard disk. 2, 3rd, 4th, 5th, 6th, 7th
In this example, the format of the image data is explained using full-screen data. For example, a part of the screen, such as partial rewriting data of a rectangular area, can be separated into bitmap data and compression-corrected brightness data and treated as image data.

Also, the first, second, third, fourth, fifth, sixth, seventh
In this example, the bitmap data resolution is set to 384x2.
80. Power exchange in which the resolution of the compressed corrected luminance data is 768x560 The resolution of the image is not limited to this, and the same effect can be obtained as long as the resolution of the compressed corrected luminance data is higher than the resolution of the bitmap data. For example, the resolution of bitmap data is 384x240, 192x1
40.192X120 etc. Resolution of compression corrected brightness data is 768X480 and 384X280.38 respectively
It may also be 4X240 or the like.

Effects of the Invention As described above, the present invention (at the time when the second image data is output from the recording medium, the decoding process of the compressed and corrected luminance data of the first image data output from the recording medium before that) is not completed, or it is determined that the decoding process of the compressed and corrected luminance data of the first image data cannot be completed by the time the second image data is output from the recording medium from the management data recorded on the recording medium. In some cases, the second image data may be discarded, or the compressed and corrected luminance data of the second image data may be discarded to display a screen using only bitmap data as the video signal of the second image data. The decoding process of the compressed corrected brightness data of the first image data may be stopped and a screen using only bitmap data as the video signal of the first image data may be displayed, or the compressed corrected brightness data of the first image data may be discontinued. By controlling the second image data to be output from the recording medium after the decoding process is completed, it is possible to control the image data according to the capabilities of the device, and no matter what interval the image data is played back. Images can be displayed without any problems.In other words, the next image data is output and transferred before the decoding process of the compressed corrected brightness data is finished, and the compressed corrected brightness data in the temporary storage means overflows. The effect is that a normal output image can be obtained.

[Brief explanation of drawings]

Figure 1 shows a block of an image reproducing device according to an embodiment of the invention according to claims 1 and 2. Figure 2 shows a block of an image reproducing apparatus according to an embodiment of the invention according to claims 3 and 4. Figure 4 shows the blocks of the image reproducing device according to an embodiment of the invention according to claims 5 and 6.
The figure shows a block of an image reproducing device in an embodiment of the invention of claim 9 and IO @ Figure 6 shows claims 11 and 12
The blocks of the image reproducing device in one embodiment of the invention are as follows:
7 shows the blocks of an image reproducing apparatus according to an embodiment of the invention according to claims 13 and 14; FIG. 10 shows a schematic diagram of image data in a recording medium; and FIG. 9 shows blocks of a conventional image reproducing apparatus. FIG. 11 is a block diagram of an encoder for image data.
- Image data output detection method 3, 43, 53... Selection means, 4.24, 44, 54... Separator ratio 5.4
5, 55...-time storage means, 6, 26, 46, 66,
... Run-length decoding method 7, 27, 57 ... Video signal output statement 8, 28. 38. 48, 58, 68,
78...Controller ratio

Claims (16)

[Claims] (1) Reproducing the image data by reproducing a recording medium on which a plurality of pieces of image data consisting of the compressed corrected brightness data obtained by run-length encoding the corrected brightness data that corrects the resolution of the bitmap data and the bitmap data is recorded. a reproduction means for outputting the image data; an image data output detection means for detecting the start of output of image data from the reproduction means and outputting data output start information; and sending the image data output from the reproduction means to the next stage. a separating means for separating the image data output from the selecting means into bitmap data and compressed corrected brightness data; and a temporary storage for temporarily storing the compressed corrected brightness data output from the separating means. means; and run-length decoding means for decoding the compressed corrected luminance data stored in the temporary storage means and outputting decoded corrected luminance data, and outputting decoding processing completion information when the decoding processing is completed. , video signal output means for converting the bitmap data outputted from the separation means and the decoded corrected luminance data into a video signal and outputting the same; and inputting the data output start information and the decoding process end information and inputting the selection means The control means outputs an image data discard command to the selection means if the decoding process end information is not input at the time when the data output start information is input, and the selection means An image reproducing device characterized in that the image data outputted from the reproducing means in response to the image data discard instruction is not sent to the next stage. (2) Reproducing a recording medium on which a plurality of pieces of image data consisting of compressed corrected brightness data obtained by run-length encoding corrected brightness data for correcting the resolution of bitmap data and the bitmap data is recorded, and a second decoding processing of compressed corrected brightness data of first image data outputted before said second image data at the time when output of image data or compressed corrected brightness data of said second image data is started from said recording medium; If the second image data is not completed, the second image data is discarded. (3) Reproducing the image data by reproducing a recording medium on which a plurality of pieces of image data consisting of the compressed corrected brightness data obtained by run-length encoding the corrected brightness data that corrects the resolution of the bitmap data and the bitmap data is recorded. a reproduction means for outputting the image data, an image data output detection means for detecting the start of output of the image data or the compression corrected luminance data from the reproduction means and outputting data output start information, and an image data output detection means for outputting data output start information; separation means for separating the compressed corrected brightness data into bitmap data and compressed corrected brightness data; temporary storage means for temporarily storing the compressed corrected brightness data outputted from the separating means; an operation of performing decoding processing and outputting decoded corrected luminance data;
run-length decoding means that performs at least an operation of outputting decoding processing completion information when the decoding processing is completed; and converting the bitmap data output from the separating means and the decoding correction luminance data into a video signal and outputting the video signal. a video signal output means for at least performing an operation; and a control means for inputting the data output start information and the decoding process end information to control the run-length decoding means and the video signal output means, the control means for controlling the run-length decoding means and the video signal output means. If the decoding process end information is not input at the time when the output start information is input, a decoding process stop command is output to the run-length decoding means, and a bitmap video signal output command is output to the video output means, The run-length decoding means receives the decoding process stop command and discards the compressed and corrected luminance data being decoded, and the video signal output means receives the bitmap video output command and discards only the bitmap data input from the separation means. An image reproducing device that converts a video signal into a video signal and outputs the video signal. (4) Reproducing the recording medium on which a plurality of pieces of image data consisting of the compressed corrected brightness data obtained by run-length encoding the corrected brightness data for correcting the resolution of the bitmap data and the bitmap data is recorded, and the second decoding processing of compressed corrected brightness data of first image data outputted before said second image data at the time when output of image data or compressed corrected brightness data of said second image data is started from said recording medium; An image reproducing method characterized in that, if the first image data is not completed, only the bitmap data of the first image data is converted into a video signal and outputted. (5) Reproducing the image data by reproducing a recording medium on which a plurality of pieces of image data consisting of the compressed corrected brightness data obtained by run-length encoding the corrected brightness data for correcting the resolution of the bitmap data and the bitmap data is recorded. a reproduction means for outputting the image data, an image data output detection means for detecting the start of output of the image data or the compression corrected luminance data from the reproduction means and outputting data output start information, and an image data output detection means for outputting data output start information; separation means for separating the compressed corrected brightness data into bitmap data and compressed corrected brightness data; temporary storage means for temporarily storing the compressed corrected brightness data outputted from the separating means; run-length decoding means that performs a decoding process and outputs decoded corrected luminance data, and outputs decoding process completion information when the decoding process is completed; and the bitmap data output from the separating means and the decoded corrected luminance data. video signal output means for converting the data into a video signal and outputting the video signal; and control means for inputting the data output start information and the decoding process end information to control the playback means, the control means converting the data output start information into a video signal and outputting the video signal. If the decoding process end information is not input at the time when the decoding process end information is input, the playback means is controlled to stop the image data output operation until the decoding process end information is output, and the playback means An image reproducing device characterized in that outputting image data is temporarily stopped under control of means. (6) Reproducing the recording medium on which a plurality of pieces of image data consisting of the compressed corrected brightness data obtained by run-length encoding the corrected brightness data for correcting the resolution of the bitmap data and the bitmap data is recorded, and the second decoding processing of compressed corrected brightness data of first image data outputted before said second image data at the time when output of image data or compressed corrected brightness data of said second image data is started from said recording medium; is not completed, the reproduction of the recording medium is temporarily stopped so that the second image data or the compression-corrected brightness data of the second image data is output from the recording medium after the decoding process is completed. An image playback method characterized by stopping at . (7) Image data consisting of compressed corrected brightness data obtained by run-length encoding corrected brightness data that corrects the resolution of bitmap data and the bitmap data, together with management data including time interval information of the image data. A reproduction means for reproducing a plurality of recorded recording media; a selection means for controlling sending of the output signal of the reproduction means to the next stage; and a selection means for inputting the output signal of the selection means and converting the output signal into bitmap data and compression-corrected luminance data. Separating means for separating into management data; temporary storage means for temporarily storing the compressed corrected luminance data outputted from the separating means; and decoding correction for performing decoding processing on the compressed corrected luminance data stored in the temporary storing means. run-length decoding means for outputting luminance data; video signal output means for converting the bitmap data output from the separation means and the decoded corrected luminance data into video signals and outputting the same; and management output from the separation means. control means for inputting data and detecting the amount of compressed corrected luminance data stored in the temporary storage means to control the selection means; The processing time required to perform the decoding process is calculated, and the time interval information included in the input management data and the processing time are used to start outputting the next image data or to correct the compression of the next image data. If it is determined that the decoding process is not completed before the output of the luminance data starts, a next image data discard command is sent to the selection means, and the selection means then outputs the next image data from the reproduction means according to the next image data discard command. An image reproducing device characterized in that at least image data is not sent to the next stage. (8) Image data consisting of compressed corrected brightness data obtained by run-length encoding corrected brightness data that corrects the resolution of bitmap data and the bitmap data, together with management data including time interval information of the image data. A plurality of recorded recording media are reproduced, the amount of compressed corrected brightness data of the first image data outputted from the recording medium is detected, and the compressed corrected brightness data of the first image data is calculated from the data amount. Calculate the processing time required to perform the decoding process, and use the time interval information and the processing time to start outputting second image data to be output from the recording medium after the first image data, or An image reproduction method characterized in that, if it is determined that the decoding process is not completed by the time output of compressed corrected luminance data of the second image data starts, the second image data is discarded. (9) Image data consisting of compressed corrected brightness data obtained by run-length encoding corrected brightness data for correcting the resolution of bitmap data and the bitmap data, together with management data including time interval information of the image data. a reproducing means for reproducing a plurality of recorded recording media; a separating means for inputting an output signal of the reproducing means and separating it into bitmap data, compressed corrected luminance data and management data; and a compressed corrected luminance outputted from the separating means. a selection means for controlling sending of data to the next stage; a temporary storage means for temporarily storing the compressed corrected luminance data outputted from the selected means; and decoding of the compressed corrected luminance data stored in the temporary storage means. run-length decoding means for processing and outputting decoded corrected luminance data; and video signal output means for at least converting the bitmap data output from the separating means and the decoded corrected luminance data into a video signal and outputting the same. , comprising control means for inputting the management data output from the separation means, detecting the amount of compressed corrected luminance data stored in the temporary storage means, and controlling the selection means and the video signal output means. , the control means calculates the processing time necessary for the run-length decoding means to decode the compressed and corrected luminance data of the first image data stored in the temporary storage means from the data amount, and The time interval information included in the management data and the processing time are used to start outputting the second image data to be output from the recording medium after the first image data, or to start outputting the second image data to be output from the recording medium after the first image data. If it is determined that the decoding process of the compressed corrected brightness data of the first image data is not completed before the output of the compressed corrected brightness data starts, outputting a next compressed corrected brightness data discard command to the selection means and the video output means outputs a next bitmap video output command, the selection means does not send the compressed corrected brightness data of the second image data to the next stage according to the next compressed corrected brightness data discard command, and the video signal output means outputs the next bitmap video output command. An image reproducing apparatus characterized in that upon receiving a bitmap video output command, the video signal using only bitmap data is output as the video signal of the second image data. (10) Image data consisting of compressed corrected brightness data obtained by run-length encoding corrected brightness data that corrects the resolution of bitmap data and the bitmap data, together with management data including time interval information of the image data. A plurality of recorded recording media are reproduced, the amount of compressed corrected brightness data of the first image data outputted from the recording medium is detected, and the compressed corrected brightness data of the first image data is calculated from the data amount. Calculate the processing time required to perform the decoding process, and use the time interval information and the processing time to start outputting second image data to be output from the recording medium after the first image data, or If it is determined that the decoding process is not completed by the time the output of the compressed corrected luminance data of the second image data starts, the second
An image reproduction method characterized in that a video signal using only bitmap data is output as a video signal of image data. (11) Image data consisting of compressed corrected brightness data obtained by run-length encoding corrected brightness data that corrects the resolution of bitmap data and the bitmap data, together with management data including time interval information of the image data. a reproducing means for reproducing a plurality of recorded recording media; a separating means for inputting an output signal of the reproducing means and separating it into bitmap data, compressed corrected luminance data and management data; and a compressed corrected luminance outputted from the separating means. temporary storage means for temporarily storing data; run-length decoding means for performing at least an operation of decoding the compressed corrected luminance data stored in the temporary storage means and outputting the decoded corrected luminance data; and from the separating means. video signal output means that performs at least an operation of converting the output bitmap data and the decoded corrected luminance data into a video signal and outputting the video signal; and inputting the management data output from the separating means and storing it in the temporary storage means. control means for detecting the data amount of the stored compressed corrected luminance data and controlling the run-length decoding means and the video signal output means; The processing time required to perform the above processing is calculated, and the time interval information included in the input management data and the processing time are used to start outputting the next image data or to start outputting the compression-corrected luminance data of the next image data. If it is determined that the decoding process will not be completed by the time the output starts, a decoding process stop command is output to the run-length decoding means, and a bitmap video output command is output to the video output means, and the run-length decoding means outputs a bitmap video output command to the video output means. In response to the instruction to stop the decoding process, the compressed and corrected brightness data being decoded is discarded,
The image reproducing apparatus is characterized in that the video signal output means receives the bitmap video output command and converts only the bitmap data input from the separation means into a video signal and outputs the video signal. (12) Image data consisting of compressed corrected brightness data obtained by run-length encoding corrected brightness data for correcting the resolution of bitmap data and the bitmap data, together with management data including time interval information of the image data. A plurality of recorded recording media are reproduced, the amount of compressed corrected brightness data of the first image data outputted from the recording medium is detected, and the compressed corrected brightness data of the first image data is calculated from the data amount. Calculate the processing time required to perform the decoding process, and use the time interval information and the processing time to start outputting second image data to be output from the recording medium after the first image data, or If it is determined that the decoding process is not completed by the time the output of the compressed corrected luminance data of the second image data starts, the first
An image reproduction method characterized in that a video signal using only bitmap data is output as a video signal of image data. (13) Image data consisting of compressed corrected brightness data obtained by run-length encoding corrected brightness data that corrects the resolution of bitmap data and the bitmap data, together with management data including time interval information of the image data. a reproducing means for reproducing a plurality of recorded recording media; a separating means for inputting an output signal of the reproducing means and separating it into bitmap data, compressed corrected luminance data and management data; and a compressed corrected luminance outputted from the separating means. temporary storage means for temporarily storing data; run-length decoding means for decoding compressed corrected luminance data stored in the temporary storage means and outputting decoded corrected luminance data; and bits output from the separation means. video signal output means for converting the map data and the decoded corrected brightness data into a video signal and outputting the same; and a video signal output means for inputting the management data outputted from the separating means and for converting the compressed corrected brightness data stored in the temporary storage means. The control means detects the amount of data and controls the reproduction means, and the control means calculates the processing time required for the run-length decoding means to perform the decoding process from the amount of data, and manages the inputted data. If it is determined using the time interval information included in the data and the processing time that the decoding process will not end before the start of outputting the next image data or the start of outputting the compression-corrected luminance data of the next image data, the The reproduction means is controlled to output the next image data or the compression corrected brightness data of the next image data after the decoding process is completed, and the reproduction means outputs the image data under the control of the control means. An image playback device characterized by a temporary stop. (14) Image data consisting of compressed corrected brightness data obtained by run-length encoding corrected brightness data that corrects the resolution of bitmap data and the bitmap data, together with management data including time interval information of the image data. A plurality of recorded recording media are reproduced, the amount of compressed corrected brightness data of the first image data outputted from the recording medium is detected, and the compressed corrected brightness data of the first image data is calculated from the data amount. Calculate the processing time required to perform the decoding process, and use the time interval information and the processing time to start outputting second image data to be output from the recording medium after the first image data, or Compression of the second image data If it is determined that the decoding process is not completed by the time output of corrected luminance data starts, the compression of the second image data or the second image data is performed after the decoding process is completed. An image reproducing method comprising temporarily stopping reproduction of the recording medium so that corrected luminance data is output from the recording medium. (15) The data amount information of the compressed corrected brightness data is also recorded on the recording medium as management data, and the control means uses the data amount information to cause the run length decoding means to determine the compressed corrected brightness data stored in the temporary storage means. Claims 7 and 9, characterized in that the processing time required to perform the decoding process is calculated.
, 13. The image reproducing device according to . (16) Necessary for reproducing a recording medium that also records data amount information of compressed corrected brightness data as management data, and decoding the compressed corrected brightness data output from the recording medium using the data amount information. 15. The image reproduction method according to claim 8, 10, or 14, further comprising calculating a processing time.