JPH0376389A - Reproduction device for picture and sound - Google Patents

Abstract

PURPOSE:To simplify the reproduction of a picture and a sound by using an optical disk recording information on a sample and permitting a user to exchange the sample for the desired picture. CONSTITUTION:Picture data accumulated in a buffer memory 416 is read instead of reading the picture of the sample from a picture memory 334. Data is decoded in a picture decoder 432 and is stored in a picture memory 438. A switching unit 440 reads picture data from the picture memory 438 and outputs the picture to a display 338. At that time, a reproduction unit 302 reads data showing the relation of the sound and the picture, namely, a control table, from the identification data area 16 of the optical disk 10, transfers it to a control unit 340. On the other hand, sound data (e) and (f) are read and are selectively decoded in a sound decoder 320 and are reproduced from a speaker 332 as the audible sound. Thus, the picture In1 of the user is displayed in the display 338 in synchronizing with the sound and instead of the picture B1 of the sample.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an image and audio reproducing device, and more particularly, to an image and audio reproducing device that records images and audio on a file recording medium such as an optical disk and reproduces them in association with each other. .

There is a need for a simple image and audio editing system that allows a user to record images and audio on a file recording medium such as an optical disk, and reproduce them in association with each other. For example, Japanese Patent Laid-Open No. 62-269584 discloses a recording and reproducing apparatus and method for combining audio signals and image signals and continuously recording them on an optical disc. This device uses an optical disk on which audio and images are recorded, and the combination of the two is almost fixed, and when playing back this, the player has the degree of freedom to select one of the combinations. . For example, English and French voices are recorded, and the user can select one of them for playback. However, it has not been possible for users to record images and sounds for the purpose of reproducing them in any combination.

Therefore, the patent application No. 1-50021 filed by the same applicant as the present application
proposed a simple image and audio editing system that allows a user to record images and audio on a file recording medium and play them back in association with each other. In this device, the images and sounds recorded by the user must be sampled at the same sampling frequency as the sampling frequency of the images or sounds recorded in advance on the file storage medium. If the two are different, it is necessary to provide a processing circuit such as a digital filter or thinning.

Also in this predecessor device. No consideration was given to copyright. Images and sounds recorded by the user, that is, user information, are treated on an equal footing with images and sounds recorded in advance on a file storage medium, that is, bri-record information. Therefore, the user was able to copy the Buri record information with the same quality.

BACKGROUND-1 The present invention solves the drawbacks of the prior art, and provides a simple image and audio playback system that can record on a file recording medium even image and audio information whose sampling frequency is different from that of BR-record information, and that can reproduce them in association with each other. The purpose is to provide equipment.

&lJ do 1 shop In the image and audio reproduction device according to the present invention.

When reproducing a combination of images or sounds pre-recorded on a file storage medium and images and sounds recorded by a user, the device and storage medium are configured in such a way that the latter is not treated equally with the former. by this,
User information can be recorded with a simple circuit configuration without depending on the sampling frequency of the information. Furthermore, regarding copyright issues, the system is configured so that copying based on digital signals is not possible.

According to the invention, a first recording area in which a first signal representing a sample or framework of images and sounds is digitally recorded, and a second recording area in which a second signal representing the desired images and sounds are digitally recorded. An image and audio reproducing apparatus reads and reproduces signals from a file recording medium including two recording areas.
a signal generating means for generating a third signal indicating a mixing ratio of the first signal and the second signal, converting the first and third signals into corresponding analog signals, respectively; a first signal converting means for converting and outputting the signal; and a mixing means for mixing the first signal output from the first signal converting means with a second signal according to a third signal and outputting a resultant signal. When reproducing a file recording medium in which a desired image is recorded in a second recording area, the mixing means includes a sample or a framework recorded in the first recording area and a desired image recorded in the second area. The desired image is applied according to the third signal and the desired image is reproduced along with the sound.

According to the present invention, the reproducing device also includes a first clock generating means that generates and supplies a first clock for synchronously operating the reading means, the signal generating means, and the first signal converting means; a second clock generating means for generating a second clock for operating the mixing means and supplying the second clock to the mixing means, the second clock generating means generating the second clock at a frequency different from that of the first clock; do.

DESCRIPTION OF EMBODIMENTS Next, embodiments of an image and audio reproduction apparatus according to the present invention will be described in detail with reference to the accompanying drawings. Referring to FIG. 1, in the example of one actual flow, an optical disk 10 such as a compact disk recorded in a predetermined format is supplied to a user. This predetermined format specifies a blank recording position or area in which images and/or sounds are to be recorded, or into which "sample" images and/or sounds are recorded in a predetermined format. The user uses the recording device 200 (FIG. 4) to record desired images and audio onto the optical disc IO.The user then sets this optical disc IO into the editing device 300 (FIGS. 5A and 5B) and performs the operations described above. Edit so that these images and sounds fit into the recording area specified in the format, that is, "Framework J." Or, edit so that desired images and sounds are substituted for the sample.

In this embodiment, when reproducing a combination of BR-record information and user information, 1. the device configuration and media are such that the two data are not mixed within the device, in other words, the latter is not treated equally with the former; It is structured. This solves the problems of the prior art described above. Regarding copying of pre-recorded information, the device is configured to only allow copying on an analog basis.

As shown in FIG. 1, a track 12 extending from the center of the disk 10 to the periphery is formed at the opening of the optical disk 11 supplied to the user. From the starting point 12a to the ending point 12b of the track 12, data is recorded in the format shown at the bottom of the figure. Note that the optical disk IO is only one example of a file recording medium applicable to this apparatus, and other file recording media such as a magnetic disk, magneto-optical disk, or digital audio tape can also be effectively used.

A lead-in area 14 follows the starting point 12a of the track 12, followed by an identification area 1615 and a user area 1.
8 is formed. The user area 18 is a recording area where the III user can freely record images, audio, and data. The identification area 16 contains format information that defines the framework of information to be added to the user area 18, programs that define editing and playback procedures and operations, and "
This is an area where images and audio as sample J are recorded.

User area 1B is data management area 2 as shown in Figure 9.
0, edit data area 22, compressed image data area 24
i5 and compressed audio data area 28.

First, the compressed image data area 24, which is followed by the lead-out area 30, is a recording area in which image data desired by the user is recorded in a compressed and encoded form. Further, in the compressed audio data area 28, desired audio is compressed and encoded and recorded. Furthermore, the data management area 20 is an area for recording management data such as the type of disk IO and identification code.
This is an area in which a conversion table 32 (FIG. 2) is recorded that defines the correspondence between the sample images and sounds recorded in the user area 18 and the images and sounds recorded in the user area 18.

As shown in FIG. 2, it is assumed that, for example, three frames of images Bl, B2 and B3 are recorded as samples in the identification area 16, and two types of sounds e and f related to these are recorded. As shown in the management table 34 in the figure, the timings for reproducing these are defined at successive times tie, t2e, and t3e for audio e, and for audio f.
are defined at successive times tlf, t2f and t3f. This management table 34 is recorded in the identification area 16.

Therefore, in the conversion table 32 provided in the edit data area 22 of the user area 18, the correspondence relationship as shown in FIG.
into a new image In2, and image B3 into a new image I.
The playback device 30 plays the disk lO on which the 6 conversion table 32 is written, in which the correspondence relationships to be made correspond to the respective n3 are written.
0, the image designations Old, 82, and B3 in the management table 34 are changed to the image designations In1. In2 and In3, respectively, and the images 1nl, Ln2, and In3 are reproduced in a corresponding relationship as shown in the resulting management table 34a. In other words, sample image B1. Images In1.B2 and B3 are replaced by images In1.B2 and B3. In2 and In3 are regenerated. In addition, sample image B1. B2 and B3 may be blank, in which case it would be as if the desired image In1. It is reproduced as if In2 and In3 were applied.

The supplier of the optical disc 1O uses a recording device 100 as shown in FIG.
Record the “sample” or “framework” in 6.

This is provided to users as a so-called co-wo. In this embodiment, the recording device I00 has two audio encoders 102i3 and 104 as shown in the figure, which compress and encode audio signals input from audio inputs 106 and 10g, respectively, and output the compressed and encoded audio signals to the signal selection unit 110. This is an encoding device that performs In this embodiment, three types of audio modes are possible, and the sampling frequency is 37.
9.37.9i3 and 18.9kHz can be selected. An image encoder 112 is also connected to the signal selection unit 110, and is an encoding device that encodes the image signal input from the image input 114. The encoded image data is input to the signal selection unit 110 of the apparatus 100.
It also has a data encoder 118 that encodes data input from the data input 116 and outputs it to the signal selection unit 110.

The signal selection unit 110 selects these encoders 102
, 104, 112 and 118 selectively output to output 120. The signal selection unit 110 includes a reference signal generator 122.
is also connected. The reference signal generator 122 is a reference generation circuit that provides a reference signal to the signal selection unit 110 in response to a control signal received by the control personnel 124, and also to each unit in the apparatus. For example, when a supplier of an optical disc 10 records an image signal as bri-record information in the identification area 16 using the present device 100,
In order to sample the image signal with, for example, 720 pixels and 480 horizontal scanning lines, 13.6 MHz is required in this embodiment.
A sampling frequency of z is used. Reference signal generator 12
2 also provides such a sampling frequency.

A recording unit 126 is connected to the output 120 of the signal selection unit 110, and is an optical disc recording device that records data on the optical disc IO according to the format shown in FIG.

For example, when image signals of multiple frames of images B2 and B3 are manually input from the image input 114 to the image encoder 112, they are encoded by the encoder 112 and supplied to the selection unit 110. Also, audio encoder 1
For example, voice e is inputted to 02 from the voice input 106, encoded, and supplied to the selection unit 110. Similarly, a voice f, for example, is inputted to the voice encoder l port 4 from the voice input 108 and encoded to the selection unit 11.
Output to 0. Data provided at input 116 is also encoded in data encoder 118 and sent to selection unit 110.
given to. This data is image B1. It includes a management table 34 that defines the correspondence between B2 and B3 and two types of voices e and f related to them.

The selection unit 110 selects the encoder 102, 104, 112 in a predetermined format defined in the identification area 16.
and 118 and connects it to its output 120. These encoded sounds, images and data are written by the recording unit 126 to the identification area I6 of the disc IO 1 selection unit 110 as well.

Output 1 the reference signal generated from the reference signal generator 122
Transfer to 20. This is recorded in the subheader included in the data frame in the identification area 16 in the recording unit 126.

The optical disc 10 with encoded data recorded in the identification area 16 is supplied to the user, and the user records desired data in the user area 18 using, for example, a sequential recording device 200 shown in FIG. can do. The desired image signal to be recorded on the optical disk IO is image input 2.
It is input from 02. This is analog digital (A
/D) The image stored in the image memory 206 is converted into corresponding digital data by the converter 204 and temporarily stored in the image memory 206 under the control of the control unit 236 which responds to the operator's power 234. Display 24 through digital-to-analog converter (D/A) 242
6 and can be visually recognized.

Audio signals to be recorded on the optical disc 10 in association with these image signals are input to the audio input 212 . this is,
The analog/digital converter 214 converts the data into corresponding digital data, and the audio encoder 216 encodes the data.

The image data stored in the image memory 206 is read out from its readout output 222 to the image encoder 218,
Here, the data is subjected to compression encoding such as discrete cosine transformation, and stored in the buffer memory 220.

For example, if the original image signal for one frame of a 768-pixel, 480-horizontal-scan edition is a signal obtained by subsampling the luminance signal to chroma signal ratio at a ratio of 2:1:1, this is converted to 1 bit per pixel by discrete cosine conversion. When compressed, approximately 50 bytes of compressed data are obtained.

The output 224 of the buffer memory 22G and the output 226 of the audio encoder 216 are connected to the signal selection unit 22.
8, the output 23G of the latter is connected to the recording unit 232
It is connected to the. A partially recorded optical disc IO supplied from a supplier is set in the recording unit 232, and the recording unit 232 is a recording device that additionally records images and/or audio signals in the user area 18. The signal selection unit 228 selectively connects these inputs 224 and 226 to the output 230 in response to the operation signal from the operator 234, so that the recording unit 232 selectively outputs image and audio signals to the optical disk IO. recorded in

In response to instructions input from the operator 234, the control unit 236 generates the address of the track 12 of the optical disc IO at the output 240 in synchronization with the clock 238.

For example, the image signal provided to one image input 202 may be obtained 768 from an electronic still camera or other video signal source.
In the case of a video signal of x480 pixels, a sampling frequency of 14.3 MHz is advantageously used in this embodiment. This takes a different value from the clock frequency 13.6 MHz used in the recording device 100 of the optical disk IO supplier, and sequentially starts the recording device 1i12 from the clock 238.
It is supplied to each part of 00.

For example, when an instruction to record compressed image data stored in the buffer memory 220 is given to the operator 234, in response, the signal selection unit 228 selects the input 224 from the buffer memory 220, and the control unit 234 selects the input 224 from the buffer memory 220.
36 generates the address of the compressed image data area 24 of the optical disc IO. This address is in the recording unit 232
supplied to The control unit 236 also gives a read instruction to the buffer memory 220 to read compressed image data from the buffer memory 220, which is output 2.
24 to the recording unit 2 via the signal selection unit 228.
32 and recorded in the compressed image data area 24 of the optical disc IO. Note that to avoid complication of the diagram, control lines from the control unit 236 to each circuit element are omitted from the diagram.

Audio signals, such as so-called memo audio, related to these image data are input to the audio input 212 and are converted into analog audio signals.
The digital converter 214 converts the data into corresponding digital data. This is compressed and encoded by the audio encoder 216, and recorded in the compressed audio data area 28 by the recording unit 232 in the same manner as described above. In this embodiment, this recording is 32 bits/second, 4 bits ADPC&4, 8
This is done with kHz sampling.

The buffer memory 220 may be, for example, an external memory such as a memory card that is removable from the device, as shown by a point M220a in the figure. In this case, the compressed image data is stored as a file in the external memory 220a, etc. It can be saved on a storage device.

The sequential recording bag fi200 can decode the compressed image data stored in the buffer 220 to obtain original image data. For this purpose, an image decoder 248 is provided, and image data decompressed by the image decoder 248 is address-converted by an address conversion unit 250 and stored in the image memory 206. From then on, it is treated in the same way as other image data.

This function, for example, allows the buffer 220 to
0a and is effectively used when only compressed image data can be obtained from the outside.

The optical disc IO on which images and sounds have been recorded in the user area 18 by the sequential recording device 200 can be edited as desired using the editing and reproducing device 300 shown in FIGS. 5A and 5B. 300 is shown as a separate device from the sequential recording device 200 to avoid complicating the explanation, but of course it may be configured integrally with the optical disk IO on which images and audio are recorded by the sequential recording device 200. is set in the reproduction unit 302.

The editing and reproducing apparatus 300 as a whole includes two units, namely, a recording and reproducing section 400 and a recording and reproducing section 402, which are separated by a dashed line 404 in the figure. The former reads the images and sounds recorded in advance on the optical disc IO, that is, the pre-recorded information, from the optical disc IO and outputs the analog signals 406 and 41.
This is a functional unit that reproduces the data as 0. Buri record playback section 4
In addition to this, 00 also contains Buri record information and optical disk IO.
A mixing ratio (MIX) signal indicating the mixing ratio of images and sounds recorded by the user, that is, user information, is output as an analog signal to the synchronization signal (SYNCI) and 41G.
It also has the ability to generate

The recording and reproducing unit 402 is a functional unit that receives the analog inputs 405 and 408 from the recording reproducing unit 400, mixes these and user information in accordance with the mixing ratio signal 410, and reproduces the mixture on the display 338 and the speaker 332.

The playback output 306 of the playback unit 302 is connected to a signal separation unit 308 that selectively converts the input 306 into its output 31 in response to the operational input 310.
2.314 is a selection circuit connected to 412 and 414. Outputs of these selection circuits 312.314°412
and 414 are connected to an audio decoder 320°, an image decoder 322, an editing data memory 342, and a buffer memory 416, respectively. Signal separation unit 3
08, among the data read out from the playback unit 302 to the input 302, the image data recorded in the identification area 16 is sent to the output 314, the audio data is sent to the output 312, and the compressed image data and The audio data is output to output 414, respectively. Output 412
, the bri-record information recorded in the identification area 16 of the optical disc IO.

Also, the user information recorded in the data management area 20i3 and the edited data area 22 is output.

Audio decoder 320 decodes the audio data input at input 312 and outputs it to digital-to-analog converter 328, which is converted into an analog signal form and output 4.
08 to the MIX switching circuit 418 of the recording/reproducing section 402, the 6-image decoder 322 decodes the image data input to the input 314 and outputs it to the image memory 334.
The one-image memory 334, which is a decoder for storing data in the image memory 334, includes two storage areas as shown in the figure, and is used by switching according to the mixing ratio signal MIX generated by the control unit 340. This switching is performed by the switching unit 335.
It is carried out by

The image data in the image memory 334 is transferred to the switching unit 335.
is selectively read out to a digital-to-analog converter 336 and converted into a corresponding analog signal and its output 40
6 and output to the recording/reproducing section 402.

In order to enable the user to edit the image and audio data recorded in the user area 18 of the optical disc 10 according to the "framework" or "sample" of the identification area 16 as desired, the present device 300 is configured to respond to the human operator's power 310. A control unit 340 is provided which allows the editing data area 22 of the user area 18 to be modified and edited. A memory 342 is connected to the control unit 340 as a work area for temporarily storing and processing the edited data 22.

Note that to avoid complication of the diagram, control lines from the control unit 340 to each circuit element are omitted from the diagram.

Clock 344 generates a sampling frequency of 13.6 MHz in this example, which is a frequency corresponding to an image signal of 720 x 480 pixels. In response to this, the synchronization signal (SYNCI generator 420 generates a synchronization signal 5 of one image signal)
Generate YNC. This synchronization signal 5YNC includes a mixing ratio signal MIX power S adder 4 generated by the control unit 340.
22 to form a mixed synchronization signal -IX+5YNC. For example, as shown in FIG. 6, if a one-frame image 500 is an image obtained by mixing and combining an area 502 formed by Brillicord image information and an area 504 formed by user image information in a diffuse area 506, l
Horizontal scanning, color image signals R, G in l11508
and B and its mixed synchronization signal MIX+5YNC are as shown in FIG. Two consecutive horizontal synchronization signals HS
1 horizontal scan sandwiched between YNC (In the H1 period, the bricord image information and user image information are mixed in the section between points a and b, and the section between points C and d. In other sections, either one is As you will see, the mixed synchronization signal MIX+5YNC is a signal that uses the synchronization signal 5YNC to indicate the mixing ratio MIX of the Brillicord image information and the user image information.This signal is outputted from the adder 422, converted into a corresponding analog signal by the digital/analog converter 424, and given to the recording/reproducing section 402 from the output 410.

Among the data read out from the reproduction unit 302 to the input 306, the compressed image data recorded in the compressed image data area 24 and the compressed audio data recorded in the compressed audio data area 28 are read out to the output 414,
It is temporarily stored in the buffer memory 41B. Buffer memory 416, like buffer memory 220 in FIG. 4, may be an external memory, such as a memory card, which is removable from the device, as shown at point $1416a in FIG. 5A; in this case, A digital copy of compressed image data, which is user information, is stored in this external memory 416.
This becomes possible by installing the external memory 220a in the position of the external memory 220a shown in FIG.

An image decoder 432 and an audio decoder 434 are connected to the output of the buffer memory 416, and these are
This is a decoder that decompresses compressed image and audio data read from buffer memory 416. The decoded image data is address converted by an address conversion unit 436 and stored in an image memory 438.
Similarly to 330, 8 includes two storage areas as shown in 1, and the output thereof is switched and used by a switching unit 440.

The switching unit 440 is a selection circuit that selectively switches between the two outputs of the image memory 438 and the output 444 of the analog converter 442 in response to the mixed signal old X, similar to the switching unit 335. The analog converter 442 receives at its input 446 the image signal obtained from the image signal output 406 of the pre-record playback unit 400, converts it into corresponding digital data, and transfers it from its output 444 to the image memory 438 J5 and the switching unit 440.

To explain in more detail, the mixing of the Bri record information and the user information is performed by the switching unit 44 according to the mixing ratio signal MIX.
0, the output of one storage area of the two sides of the image memory 438 and the analog-to-digital converter 442.
This is achieved by determining the mixing ratio of the output 444 of . For example, in the case of the example shown in FIG. 7, in the diffuse sections a-b i3 and c-d, the switching unit 440
is the output of one storage area of the two sides of the image memory 438 and the output 4 of the analog-to-digital converter 442.
44 are mixed at a ratio according to the signal MIX and output. In other sections, either the image memory 438 or the output 444 of the analog-to-digital converter 442 is selected.

The signal mixing ratio in the switching unit 440 is &II
It depends on the signal MIX given from the X switching control circuit 448. This signal MIX is obtained by converting the mixed synchronization signal output 410 of the BRIBRECORD reproduction section 400 into digital data by the analog-to-digital converter 450. The mixed synchronization signal MIX supplied to the input 452 of the converter 450 is also input to a synchronization separation circuit 454, where the synchronization signal 5YNC is separated and the latter is supplied to a clock synchronization circuit 456.

The clock synchronization circuit 456 is a synchronization generation circuit that generates timing clocks and sampling clocks necessary for each section of the recording/reproducing section 402 and supplies them to each section. In this embodiment, the sampling frequency is 14. :1MHz is used. This is the clock circuit 344 of the Buri record playback section 400.
Rather, it is the same as that of the video signal of a child still camera or normal TV signal standard.

The image data in the image memory 438 is transferred to the switching unit 440.
The signals are selectively read out to the digital-to-analog converter 458 in synchronization with the signal MIX, where they are converted into corresponding analog signals and output as visible images on the display 338.

By the way, the compressed audio data temporarily stored in the buffer memory 416 is read out to the audio decoder 434, decoded, decompressed, and applied to the input 464 of the multiplier 460. The 0 multiplier 460 has another input 466. A coefficient is set for this by the coefficient setting circuit 462, and the multiplier 460
multiplies the audio data at input 464 by the coefficient at input 466 and outputs this to digital-to-analog converter 468 . Coefficients are set in the coefficient setting circuit 462 from the output 468 of the control unit 340. The control unit 340 is
Coefficients are set in the coefficient setting circuit 462 according to the edit data recorded in the edit data area 22 of the optical disc IO. The audio data input to the digital-to-analog converter 418 is converted there to a corresponding analog signal,
It is applied to one input 470 of the MIX switching circuit 418.

The other input 472 of the MIX switching circuit 418 is connected to the audio output 408 of the BRIB record playback unit 400, and the switching circuit 418 selectively outputs the two-person power to the output 330 in response to the output 468 of the control unit 340. do.

In this way, both audio signals are mixed, and the mixed signal is reproduced as audible audio by the speaker 332 connected to its output 330.

In this embodiment, the recording and reproducing section 402 is configured as a device that can be separated from the recording and reproducing section 400. Other analog image signals and audio signals 474 can be input from the outside to the analog signal input terminals 446 and 452 of the recording/reproducing section 402, as shown by dotted lines in FIG. 5B. In this way, the recording/reproducing section 402 can also digitize and mix analog input signals from the outside. Further, the hardware of the analog-to-digital converter 442 and the image memory 438 can be designed to the same specifications as those of the sequential recording device 200, that is, the analog-to-digital converter 204 and the image memory 206. In addition, the output 406°4 of the Buri record playback section 400
The signals output from the 08i5 and 410 are analog signals, thereby eliminating the possibility of the user copying the bricord information while maintaining the quality of the digital signal.

In the identification area 16 of the optical disc 10, a signal MIX indicating the mixing ratio of the pre-record information and the user information for images and sounds is recorded in advance as a "framework". For example, in the case of image synthesis as shown in FIG. 6, this mixing ratio is recorded as data indicating the mixing ratio as shown at the bottom of FIG. 7. This is read into the edit data 342 from the playback unit 302. In addition, the control unit 340 receives a signal from the operation input 310.
The data indicating the mixing ratio may be set variably.

When the control unit 340 reproduces images and audio to the display 338 i3 and the speaker 332, the control unit 340 generates a signal MIX in synchronization with the clock 344, which is mixed with the synchronization signal 5YNC and sent to the terminal 410 in the form of an analog signal.
is inputted to the recording/reproducing section 402 from. Recording/playback section 402
The MIX switching control 448 operates the switching unit 440 in response to this signal MIX to switch between the BR-record image information obtained from the 1-image memo 1J334 to the terminal 446 and the user image information obtained from the buffer memory 416 to the image memory 438. Mix.

As for audio, the bri-record information is also sent to the audio decoder 32.
0 to the terminal 408 in the form of an analog signal, and this and user information decoded by the audio decoder 434 from the buffer memory 416 are provided to the MIX switching circuit 418. The mixing ratio of the two is also instructed by a program recorded in the management data area 16 of the optical disc IO. This is read into the editing data 342, and the control unit 340 sets the coefficient according to this to the coefficient setting circuit 4.
62 to the multiplier 460, and the MIX switching circuit 418
mixes the user voice information with the Brirecord voice information at a mixing ratio corresponding to this.

When editing, the control unit 340 generates the address of the track 12 of the optical disc IO at the output 346 in synchronization with the clock 344 in response to an instruction input from the operator 31 ( ). For example, when a user gives an instruction to the operator 310 to play back a compressed image that has already been recorded, the playback unit 302 responds to the instruction to play back a compressed image that has already been recorded.
The signal separation unit 308 reads the compressed image data from the compressed image data area 24 and transfers it to the buffer memory 416. This compressed image data is stored in buffer memory 416 and decoded by image decoder 432. This is converted into a reduced screen of a predetermined size by the address conversion unit 436 and stored in a part of the storage area for one screen of the image memory 438. Similarly, compressed image data of other frames are also read out from area 24 and stored in other parts of the storage area of image memory 438 as reduced images of other frames. In this way, aggregate image data including a plurality of reduced images, that is, multi-screen image data is completed in the image memory 438. This multi-screen image data can be reproduced as a multi-screen on a portion of the display 338 from the switching unit 440 through the digital-to-analog converter 458.

The same applies when the user plays back compressed audio that has already been recorded in the compressed audio data area 28. When this instruction is given to the operator 310, compressed audio data is transferred from the compressed audio data area 28 of the optical disc 10 to the buffer memory 410.
is loaded into.

Therefore, the user selects an image already recorded as a sample on the optical disk IO for editing, for example, image B1 in the example of FIG. 302 reads image data from the identification area 16 of the optical disk IO,
This passes through the signal separation unit 308 to the image decoder 3
Transferred to 22. The image decoder 322 decodes this image data, and the image data stored in the storage area of one screen of the image memory 334 is reproduced on the display 338 as a visible image.
The aforementioned multi-screen stored in unit 8 is switched to switching unit 4.
40, a window is opened over the image from the image memory 334 and displayed on the display 338, and the image is displayed thereon.

The user then selects a desired image from the multi-screen displayed on the display 338, for example, the image Inl in the example of FIG. The data of the image Inl stored in the buffer memory 416 is decoded again by the image decoder 432, and the data is transferred to the image memory 4.
38 to the other storage area. This is selectively read out by switching unit 440 and displayed on display 338. The memo voice data stored in the buffer memory 416 is decoded by the voice decoder 434, multiplied by a coefficient by the multiplier 460, and converted into an analog voice signal by the digital-to-analog converter 468.

This is connected to the speaker 332 through the MIX switching circuit 418.
will be played.

At the same time, the control unit 340 interprets that the user's desired image Inl has been specified corresponding to the original image B1 created by the supplier, and converts the conversion table 32 (FIG. 2) into the image Bl. Create a correspondence relationship that corresponds to Formation of this conversion table 32 is performed in memory 342. In this way, the identification area 1 of the optical disk IO
User-created image 1n replaced with sample image B1 of No. 6
The relationship of l is defined in the conversion table 32. Other image B
2 and subsequent images can be sequentially replaced with desired images using such a procedure. Further, if no sample image is recorded in the identification area 16 and a "framework" is defined, a desired image can be applied to the framework.

By the way, when the optical disc IO on which such a conversion table 32 is recorded is played back by the editing/playback device 300, the program recorded in the identification area 16 is read into the control unit 340 by the playback unit 302, and the editing data is read from area 22 into memory 342. The control unit 340 controls the editing data 34
2, the sample image stored in the identification area 16 is replaced with the user's desired image stored in the user area 18. The replacement is performed as follows.

The image recorded in the identification area 16 of the optical disc IO is read into the image memory 334, but the user's image to be replaced is read out from the compressed image data area 24 and stored in the bararahua memory 416. is stored in image memory 438.

The control unit 340 converts the sample image, e.g. 81, into a user's image, e.g.
Replace with

Specifically, instead of reading a sample image from image memory 334 , image data accumulated in buffer memory 416 is read out, which is decoded by image decoder 432 and stored in image memory 438 . Switching unit 44
0 reads image data from the image memory 438 and outputs the image to the display 338. At this time, the playback unit 302 reads data indicating the relationship between audio and images, that is, the management table 34, from the identification data area 16 of the optical disc IO, and transfers it to the control unit 340.
Also, audio data e and f are read out, which are selectively decoded by the audio decoder 320 and reproduced from the speaker 332 as audible audio. In this way, the user's image Inl is displayed on the display 338 in place of the sample image 81 in synchronization with the audio.

The audio data recorded in the compressed audio data area 28 of the optical disc IO can be used, for example, to insert other audio data during the reproduction of audio and images shown in the management table 34a. At this time, the reproduction unit 302 reads audio data from the compressed audio data area 28 of the optical disc IO, and this is reproduced in the same way as the audio in the identification area.

As described above, according to this embodiment, the supplier supplies the user with the optical disc IO on which sample images, sounds, or frameworks are recorded in the identification area 16 using the recording device 100. The user uses the editing and reproducing devices 200j:j and 300 to replace this sample image with a desired image, or to apply the desired image to the framework. This allows one edit so that the images created by the user are played back in a desired order in synchronization with the audio. 6 At that time, the sampling frequency of the user information may be different from that of the Brillicord information. . Rather, by having the two different, it is possible to deal with the copying of information on a digital basis by users and protect the copyright of the original author. The editing and reproducing device 300 can be configured by adding a recording and reproducing section 402 to a bri-record reproducing section 400 that has a reproduction-only function. Therefore, for example, the interface between the two is based on analog, which is compatible with the Buri-record playback device as described in the above-mentioned Japanese Patent Application Laid-open No. 62-269584, such as system bus, color RGB
analog video signal and mixed synchronization signal MIX+5YN
It is a simple form that includes C. Further, the analog/digital converter for those signals is, for example, a sequential recording device 200.
It is possible to have common hardware specifications.

In these embodiments, the mixing ratio signal MIX is synchronized with the synchronization signal 5.
It was superimposed on YNC. However, the signal MIX may be mixed with the video signal without doing this. For example, it is possible to use any one component of the color signal RGB as the signal MIX indicating the mixing ratio. FIG. 8 shows an example of a signal waveform when the R signal is used as the signal MIX, and FIG. 9 shows an example of a composite image in that case.

Further, by configuring the mixing ratio to be limited to 0 or 1, a so-called chromakey method can be realized in which a user image is selected for a portion where each component of the color signal RGB is within a predetermined range. In Figure 1O, the threshold value Rt
An example of a color signal waveform when chroma keying is performed by setting h, Gth and Bth is illustrated, and FIG. 11 shows an example of an image synthesized thereby.

These two modification methods are realized by an editing and reproducing apparatus configured as shown in FIGS. 12A and 12B. In this embodiment, the synchronization signal 5YNC is
directly from the 5YNC generator 420 of the
It is sent to the clock synchronization circuit 456 of the recording and reproducing section 402,
This embodiment is different from the embodiments shown in FIGS. 5A and 5B in that the color image signal outputted to the image signal output 406 of the Brillicord reproduction section 400 includes a mixing ratio signal MIX. Both of the methods shown here have a problem in that certain colors cannot be used in the Brillicord image area.

However, as can be seen from the configuration of the embodiment shown in FIGS. 12A and 12B, the hardware can be further simplified, such as using fewer digital-to-analog converters and fewer analog-to-digital converters. It's advantageous.

兇-1 According to the present invention, the image created by the user can be reproduced as desired by using an optical disk on which sample information is recorded and by replacing this sample with a desired image. You can edit it like so. User information is allowed to be recorded at a sampling frequency different from that of BR-record information. If the two are different, the copyright of the original author is protected. The recording system is configured as an addition to a reproduction-only machine. The interface between the two is small and simple analog-based, and the analog-to-digital converter can have the same hardware specifications as others. Therefore, a simple image and audio reproduction device is provided.

[Brief explanation of drawings]

FIG. 1 is an explanatory diagram showing a recording format of an optical disc applied to an embodiment of an image and audio reproducing apparatus according to the present invention. FIG. 2 is an explanatory diagram for explaining an example of editing processing in the same embodiment, FIG. 3 is a schematic functional block diagram showing an example of the configuration of an optical disc recording device in the same embodiment, and FIG. A schematic functional block diagram showing a configuration example of a sequential recording device, FIG. 5 is a drawing layout diagram showing connections in FIGS. 5A and 5B, and FIGS. 5A and 5B are a combination as shown in FIG. FIG. 6 is a schematic functional block diagram showing an example of the configuration of an optical disc editing and reproducing apparatus in the same embodiment; FIG. is a waveform diagram showing an example of a video signal and a mixed synchronization signal in one horizontal scanning line of the image shown in FIG. FIG. 12 is a diagram layout diagram showing the connections in FIGS. 12A and 12B. 12A and 12B are schematic functional block diagrams showing a configuration example of an optical disc editing and reproducing apparatus in another embodiment of the present invention, which is combined as shown in FIG. 12. - Description of main parts Optical disc identification area User area Edit data area Conversion table Recording device Sequential recording device Analog-to-digital converter Image memory Audio encoder buffer memory Signal selection unit Recording unit Control unit Editing and playback device Playback unit Signal separation unit Audio decoder Image decoder IO3 16, . 18°22, , , . 32, , , . 100. 200, , , . 204.450. . 20G, 438. . 218, , , . 220.416. . 228, , , . 232, , , . 236.340. . 300, , . 302,. 308, , , . 320.434. . 322.432. . Figure 1 2I2] 400. 402, , , . 418.448. . 420, , , . 422, , , . 335.440. . 454. 456,. 460,. 462, , , . Pre-record playback section Recording playback section MIX switching control circuit 5YNC generator adder switching unit 5YNC separation circuit Clock synchronization circuit Multiplier coefficient setting circuit

Claims (1)

[Claims] 1. A first recording area in which a first signal representing a sample or framework of images and sounds is digitally recorded, and a second signal representing desired images and sounds can be written digitally. An image and audio reproduction device that reads and reproduces signals from a file recording medium including a second recording area, the device comprising: reading means for reading first and second signals from the file recording medium; Signal generating means for generating a third signal indicating the mixing ratio of the signal and the second signal, and first signal converting means for converting the first and third signals into corresponding analog signals and outputting the respective analog signals. and mixing means for mixing the first signal output from the first signal converting means with a second signal according to a third signal and outputting the resultant signal, When reproducing a file recording medium on which an image is recorded, the mixing means mixes the desired image recorded in the second area into the sample or framework recorded in the first recording area. An image and audio reproducing device characterized in that the desired image is reproduced together with the audio by applying the signal according to the signal. 2. The apparatus of claim 1, wherein the apparatus includes a third signal in the first signal, and prior to mixing the first and second signals, the combined signal is mixed into the first signal. An image and audio playback device characterized in that the image and sound are separated into a third signal and a third signal. 3. The apparatus according to claim 1, further comprising: a first clock generating means for generating and supplying a first clock for synchronously operating the signal generating means and the first signal converting means; and a second clock generating means that generates a second clock for operating the mixing means and supplies the second clock to the mixing means, the second clock generating means generates a second clock at a frequency different from that of the first clock. A playback device characterized in that it generates a clock. 4. The apparatus according to claim 1, wherein the mixing means comprises:
It is characterized by including a second signal converting means for converting the first and third signals outputted from the first signal converting means into corresponding digital signals prior to mixing the first and second signals. Image and audio playback device.