JPS5864603A - Reproduction system of video disk - 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 The present invention relates to a computer-controlled video disc playback system.

In general, playback systems using video disks are capable of recording a much larger amount of data than, for example, playback systems using tape-like recording media. It has advantages such as an excellent still playback function for obtaining images, and an excellent random access playback function for playing back arbitrary locations in two-no-dam fashion. For this reason, in addition to the usage of recording and enjoying movie programs and sports programs as software, they are also being widely used for special purposes such as business and educational purposes.

By the way, when a playback system using a video disc is used for business purposes, educational purposes, etc., it is different from when it is used for general purposes (when watching movie programs, sports programs, etc.). Alternatively, it is common to connect an external computer and use the computer to control the playback of the video disc according to a desired control program. In such video discs for dual use or educational purposes, various types of data are often recorded in various orders or in special signal formats, which can be played back without computer control. If the system (hereinafter simply referred to as the general-purpose playback system) plays the video by mistake, images and sounds that are completely unreliable will be output.

The user may conclude that the video disc player is malfunctioning.

This invention has been made in order to deal with the above-mentioned circumstances, and when a video disc is played back by a computer-controlled playback system, it can be played well without any problems, and it is possible to play it well without any problems. To provide a video disc playback system that can prevent a user from mistakenly thinking that the video disc player is out of order when the video disc player is played back using a general-purpose playback system.

Embodiments of the present invention will be described in detail below with reference to the drawings. First, a brief description of a computer-controlled video disc playback system will be given with reference to FIGS. 1 and 2. In the figure, 11 is a video disc player, 12 is a television monitor that outputs reproduced images and sounds, etc., 13 is a combination device built into the video disc player 11 or connected separately from the outside, and 14 is a video disc player. A memory that stores a control program for controlling the computer, such as a floppy disk or a cassette tape. However, from the point of view of ease of use, the above-mentioned control program is also recorded on the video disk itself, and when the power is turned on, the control program data is first read, and the control program data is read according to the built-in control program. One possibility is to control the playback of the disc. In this case, since it is necessary to read the control program data again as described above, as shown in FIG. Generally, a recording section 23 for software data such as current image data, audio data, and various data for computer input is set on the inner circumferential side.

If such a video disc is mistakenly played back by a general-purpose playback system, abnormal images and sounds will be output, especially when playing back the control program data recording section 22. Furthermore, when playing back the software data recording section 23, even if normal sound and sound are obtained, the content may not be understood at all because the images and sounds are not played back in an orderly manner based on the control program. turn into.

The present invention has been made to eliminate these problems, and FIG. 3 shows a video disc in an embodiment of the video disc playback system according to the present invention. 6 is a diagram schematically showing the video disc of FIG. 6, with the line numbers of the recording lines plotted along the horizontal axis. In FIG. 3G, a recording section 32 of discrimination data is set at the outermost circumference of the video disk 31 for determining that the video disk 31 is a video disk to be played by a computer-controlled playback system. has been done. This discrimination data is recorded in the form of a signal according to the processing time handled by the computer. Although the details will be described later, there is a warning data recording section on the inner circumferential side of the recording section 22 of nine discrimination data, which is the recording position of the control program data, for example, the line number of the recording start line of this data. 33 is set. This warning data is recorded so that its contents can be understood even when the video disc 31 is played back by a general-purpose playback system.

The contents are, for example, [This video disc is for a computer-controlled playback system, and if played on a general-purpose playback system, the playback content will be unclear, so it must be played on a computer-controlled nine playback system. Please.'' etc. On the inner circumferential side of the warning data recording section 33, a control program data recording section 34 is provided. This control program data is data for controlling the playback of the video disc 31 by the computer, and is recorded in the format (i!) according to the language handled by the computer 13.The contents of this control program data are as follows: for example"
2-inch recording line of video disc 31 No. 100
After accessing the part ~200, line number 300
-400 is accessed, the line number 400 is still reproduced, and the data of this part is read. if,
If the human power is 1... ” The content is as follows. A software data recording section 35 is set on the inner circumferential side of the control program data recording section 34 .

As mentioned above, this software data is actual image data, audio data, and data for input to the combiator, and has meaning only when it is reproduced according to the control program.

If the video disc 31 configured in this way is played back by a computer-controlled playback system (as shown in Figure 3), once the discrimination data has been played back, the warning data will not be played back and the control program data will be played back. 〇 On the other hand, when played back with a general-purpose playback system (B), the discrimination data and warning data are played back in sequence. At this time, the content of the warning data is output as an image g1 display or sound on the television monitor, so The user can still immediately stop the bulging operation.

A video disc player, a computer, etc. for playing the above-mentioned video disc 31 according to a control program will now be described with reference to FIG. 4. In the diagram, 4
1 is a video disc player, 42 is a television monitor, 43 is a computer, and 44 is a keyboard. The video disc player 41 includes a rotating means (not shown) for the video disc 31, an arm device t411 for aligning data pickup means such as a playback needle to the surface of the video disc 31 along a recording line, and this arm device 411.
A carrying device 412 that performs tracking setting by parallel transfer of the information, a system control device 413 that derives a control Ml erasure code for activating the carrying device 412 in response to commands from the computer 43, and the like are provided. Various playback functions of the video disc player 41 are switched by control signals from the system control device 1i413. Video disc player 41
Various playback functions include normal playback, still playback, fast-forward playback, reverse playback, reverse fast-forward playback, and random access playback. Therefore, the moving position and moving speed of the arm device 411 are switched by control signals from the carrier 7 mounting unit 412 and the system control device 413. Various methods can be considered to change the moving speed of the arm device 411. For example, if the carrying device [412] is powered by a motor for rotating a turntable, the speed ratio of the speed reduction mechanism and the speed of the motor can be changed. Just change the rotation speed.

For example, if it is desired to quickly move the arm device 411 by jumping over several recording lines, the number of revolutions of the motor may be increased or the speed ratio of the speed reduction mechanism may be reduced.

Also, among the data detected by the data pickup means, image data and audio data are inputted into the reproduction processing circuit 414 into the preview monitor 42 as video signals and audio data.
The signal is decoded into a voice signal, subjected to frequency control, gain adjustment, etc. in a signal processing circuit 415, and then input to the preview monitor 42 via an output circuit 416. Also, data for computer input, i.e., Ibid.] II! digital data (discrimination data, control program data,
The line code data of the recording line, etc.) is processed by the signal processing circuit 41.
1.5 through the decubitus detection circuit 417. computer 43
be taken in.

1*i'' computer 43 (114 control circuit 4
18 to prevent data damaged by the reproduction processing circuit 414 from being supplied to the preview monitor 42.
For? The oate signal can be provided to the 1-chi processing circuit 415. Further, the computer 43 can supply fixed data such as characters, figures, symbols, etc. to the signal section m circuit 4151 via the ID number control circuit 41g, and can output it on the preview monitor 42.

The computer 43 has a central processing unit (CPU) 431
1 Read-only memory (RAM) 433, Nakayarakuta R
The I'jOM432 stores program data and the like for reading control program data from the video disk 31.

The RAM 433 is provided with program data in which controller program data is written and various work areas. The character ROM 434 stores fixed data such as characters, figures, symbols, etc. as described above. Additionally, the computer 43 can read input data from the keyboard 44.

Here, a video disc 31 as shown in FIG.
The operations of the main parts related to the present invention will be explained among the operations when reproducing with a system as shown in FIG. 4. This operation is controlled by the combination machine 43 according to the program stored in the ROM 432 as described above, and its flowchart is shown in FIG.

First, when the video disc 310@ is reproduced and the 9 start switch provided on the keyboard 44 is pressed (step ''), the transition is made to step S and Gz. It is read into the work area of RAM433.
In step G1, the E signal is sent from the combiator 43 to the E signal processing circuit 4 via the signal control circuit 41g.
11ζ is supplied. This is because the discrimination data is in the form of a human-powered signal for Noviator 43, so if it is supplied to a pre-vision monitor, an incomprehensible image or sound will be output, making the user feel uncomfortable. . In addition, in this step G1, the character ROM 43
For example, using character data, the pre-vision monitor 42 displays the message ``Available, reading identification data.''
It is also possible to display images such as the following. Step 11
Then, reading of the discrimination data is completed and it is determined whether the number is 9 or not. If the loading has not finished, step-by-step, F
Repeat the processing loop of l. When the reading is completed, the operation of step G1 is stopped, and steps Fi and G are executed in step 4.
Move to z. In step 14, the warning data recording section 3
3 and transports the data pickup means to the control program data recording section 34fi. In this case, the system control device 413
The arm device 41 receives a command from the computer 43.
The carrying device 412 is driven so that 1 is transported at high speed. The control program data recording section 34 can be found, for example, as follows. As mentioned above, since the discrimination data indicates the line number of the recording start line of the control program data, each The recording line is detected and the playback detection circuit 41? The data is taken into the computer 43 via CvtI4311cfi and compared with the discrimination data stored in 81M433. . In step Gs, processing for generating a ζate signal, character data, etc. is performed in the same way as in step G1. That is, if the image or sound obtained by scanning the warning data recording section 33 at high speed is output on the television monitor 42, it will give a feeling of discomfort to the trustworthy viewer, so this is output as (--)L on the television monitor 42. For example, an image such as ``Currently skipping warning data'' is displayed.

In step Fs, the data pickup means is
It is determined whether or not the program has reached the starting point @34. If it has not reached 0, the processing loop of steps F4 and Fi is repeated.

If it has been reached, the operation of step Gx is stopped and the process moves to step 1., Gs.

In step 1, the control program data is read, and the demodulated output of the control program data is stored in the program area of the RAM 433 via the reproduction detection circuit 417. In step G8, step G
Similar to t and Gs, processing is performed to prohibit the demodulated output of the control program data from being supplied to the television monitor 42, and to output an image such as "Currently reading control program data". . At step F, reading of the control program data is completed, and it is determined whether the data is round or not. If the reading is not completed, the processing loop of step I511 is repeated. When completed, the operation of step 03 is stopped, and the process proceeds to step F. In step y-, for example, the data pickup means is made to wait at the start line of the program data of the main program data, or the video disc 3 is stopped.
After transporting the moth to the outer periphery of No. 1, it is made to wait. Thereafter, by operating the board 44, various processes are performed in accordance with the control a-gram stored in the program area of 81M433.

As explained above, if the video disc 31 is played back using the playback system shown in FIG. As a result, there is almost no difference in playback time.

On the other hand, when playing the above-mentioned video disc with a general-purpose playback system that does not use computer control, the discrimination data on the outer periphery of the video disc 31 is played back at the start of playback, so the image output from the television monitor is Or the audio becomes distorted. However, the recording part of this discrimination data spans only a few single brass lines, and from the perspective of noodles, it is O, l - 0,2 seconds I! Since the video disk 31 is a video disk for a general-purpose playback system, the warning data is immediately played back. As a result, the user may realize that his or her playback operation is incorrect immediately after starting the playback operation, and the video disc player may malfunction. I don't have any misunderstandings.

By the way, the video disc 3 as shown in Fig. 3 α, b
In the case of 1, when this is played back with a general-purpose playback system, you can stop the playback operation of the system while the warning data is being played back, but if you miss the warning screen g1 display or audio output. If you open or open the program, the control program will be played directly. In the case of 3, there is a risk that the user may mistakenly believe that the video disc player is malfunctioning. The ninth video disk constructed to solve this problem is shown in FIG. That is, this video disc 5
1 is stored as warning data in the warning data recording unit 52, and when this is played back by a general-purpose playback system, ``In addition to picture data or audio data Dcs for generating a warning,
The recording section 520 contains still mode instruction data D& for switching the video disc player of the playback system to still/screen mode.

In case A, when the video disc 51 configured as described above is played back by a playback system as shown in FIG. 4, the control program data is played back after the discrimination data is played back. Nothing has changed. On the other hand, when playing with a general-purpose playback system, 1
When the still mode instruction data Di is played back, the video disc player is set to still mode, and unless the user gives some external control, the television monitor will not output a warning picture or sound. Since the output is 911, the above-mentioned problem does not occur.

In this way, according to this invention, video discs that are played back on a playback system using computer control can be played back smoothly without any problems, and can be used as a general-purpose player. It is possible to provide a video disc playback system that can prevent a user from mistakenly thinking that the video disc player is out of order when playing back on an old system.

[Brief explanation of the drawing]

FIG. 1 is a block diagram for explaining the outline of a computer-controlled playback system, FIG. FIG. 4 is a diagram illustrating a video disc in a video disc reproducing system according to the present invention, and FIG. 4 is a diagram illustrating a video disc in a block showing a reproducing means. 31.51...Video disk 32...Discrimination data recording section 33.52...Warning data recording section 34...Control program data recording section 35...Soft data recording section 41...・Video disc player 42...TV monitor 43...Computer 44...Keyboard 411...Arm device 412...Carrying device 413...System punt rule device 414...Playback processing circuit 415... ...Signal processing circuit 4141...Output circuit 41? ... Reproduction detection circuit 418 ... Signal control circuit 431 ... CPU 432 ... ROM 433 ... fiAM 434 ... Catalog ROM D-... Image quality, audio data D-, still mode instruction data

Claims (1)

[Claims] Control program data for controlling the playback of the video disc by a combiator is arranged on the video disc, and during playback, the control program data is read into the memory for the combiator. In a video disc playback system for controlling the playback of the video disc by a video disc player, the control in the form of a signal is provided at the outermost periphery of the video disc in accordance with the logic handled by the computer. Discrimination data indicating the recording position of the program data is recorded, and O warning data is recorded on the inner circumferential side of the #N discrimination data in order to generate a warning if the playback system does not rely on combiator control. When the playback of the discrimination data is completed in accordance with the video disc recording the control poodaram data recorded on the inner circumferential side of the sickle portion of the scissors warning data and the command notes output from the combiator based on the discrimination data. and means for rapidly transporting a pickup means for detecting excerpt data from the video disc to a recording position of the control program data. (2) The warning recorded on the video disc. Claim 1, wherein the data includes still mode instruction data that allows the video disc player to be set to still mode when the video disc is played back by a playback system that does not use computer control. Video disc playback system.