JPS5848282A - Video disk reproducer - Google Patents

Abstract

PURPOSE:To avoid a misoperation of a user, by contriving the recording form of a program for a video disk containing the information to be processed with the same program on both sides A and B. CONSTITUTION:A program start code 12, a program data 13, a program continuation code 14 and the image information 11b are successively recorded on the side A of a video disk 11 at the outer circumference part and toward the inside. While the warning information 15, a continuation data 16 of program data, a program end code 17 and the image information 11d are recorded successively on the side B of the disk 11 at the outer circumference and toward the inside. At the same time, a start code 22, a data 23 and an end code 24 are recorded on the side A of a disk 21 along with the warning information 25 recorded on the side B respectively. When such disk 11 or 21 is reproduced, the warning information is reproduced if no start code 12 or 22 is introduced and no end code 24 or 14 is stored yet. As a result, a misoperation to reproduce the side B first can be avoided.

Description

DETAILED DESCRIPTION OF THE INVENTION Jin's invention relates to a video disc playback device. In general, in video discs and video disc players, the amount of information recorded on a video disc is very large. It has convenient functions such as being able to obtain a still image by stopping at the same circumference (approximately on the same circumference) and being able to track and access any location at random. In addition to playing back images, movies, sports, etc. by tracking the twins sequentially from the outer periphery of the video disc, it is desired to be used for special purposes such as business and educational purposes. In addition to image information, such special-purpose video discs generally have program information recorded on them for controlling the player using a microcomputer, making it convenient for running. Then, play back the recorded contents of the video disc and perform tasks according to the program.
In this method, a program recorded on a video disk is first read into the microcomputer, and a reproduced image is obtained according to the program.

In this case, the program information recorded on the video disc is recorded on a part of its outer periphery, but if it is recorded only on one side of the disc, for example, the following problems may occur. be.

When working with this video disc, if you accidentally play back the other side (Side B), it may be mistaken for the equipment to be malfunctioning due to the lack of programming. be.

This invention was made to deal with the above circumstances,
By devising the program recording format for video discs in which information that can be processed using the same program is recorded on both the first and second sides of the video disc, errors in operation and needs can be avoided. An object of the present invention is to provide a video disc playback device that is easy to use.

Embodiments of the present invention will be described below with reference to the drawings.
wJ shows the recording format of the video disc of the present invention, and S in the same figure shows the surface of the video disc 11, where the outermost part is set with boogram information and identification information @IIg. It's being done. The inner circumferential portion of this storage section 11 contains video signal information 1, which is recorded on the O disk and accessed according to nine programs.
1k is set. The running figure number is Video Disc IIO! Similarly, program information and program classification information recorder 5ll- are set in the outermost part, and a video signal information recording part 114 is set in the inner part of this recorder 11*4D. ◎ Video disc 11 has sP-, and the same lcP is on the disc surface.
, - A spiral O-recorded sickle twin is set, but if the recording line part on the circumference is treated as a single recording line and numbered from the outer circumference side, the first Figure-
As shown in Figure 1, each lie can be shown horizontally. Figure 1 shows the recorded state of the board, and for example, the so-called Duram start code 12 is recorded on the recording line N. It's worth it. This may span multiple 2-in. Next to this program start code 0, program side program data 13 is recorded. At the end of this program data 13, a program continuation code 14 is recorded. This program continuation code 14 may be several horizontal periods, one recording twin, or several recording lines.Video signal information (program data) is recorded after this code. The program continuation code 14 indicates that the program data will be continuously recorded on the third side. On the other hand, on the B side, first of all, warning information! S is recorded.

This warning information 15 may be for the first recording line or for multiple lines.%/%6 And next to the ζO warning information 15, the program data is a continuation of the five-sided grogtsu data. 16 is recorded, and at the end, a program end code 17 is recorded. This quadrigram end code 17 has several horizontal periods i is one lk!
Roku line or multiple Ki brass twin minutes. Next to this code 17, video signal information (program/depth information) is recorded.

The video disc 21 shown in Fig. 2 has program data 21g recorded only on its side, and a program start code 22 and a program end code 24 are recorded in the recording twins at the beginning and end of the program data 23. It is round. It is a disc on which one warning information recording section 25 is set on the outer periphery of the first side. FIG. 6 shows the recording information format for the M side and B[ of the standard video disc 21, FIG. 6-1]. Furthermore, the above-mentioned grogzum data and code are superimposed in digital form on, for example, the video period of the television signal.

A system for handling video discs 11 and 21 recorded as described above is constructed as shown in FIG. 3
1 is a video disc player, 32 is a television receiver into which the output video signal of this player is inserted;
3 is a microphone C1:inputer. The video disc player 31 includes means for rotating the video disc 11 or 21, an arm device 35 for aligning an information pickup element with the surface of the video disc along the recording line, and a parallel movement of the arm device 35. A carrying device 36 for carrying out a tracking device is provided. The reproduction information obtained from the 1+ pick-up element is demodulated into a video signal by three reproduction processing circuits, subjected to frequency control, gain adjustment, etc. by a video signal processing circuit 38, and then sent via an output circuit 39. The received television image is inputted to $32. The carrying device 36 operates by changing the movement position of the arm device 35 in various ways according to commands from the miter convenience controller 33, and by changing various other functions according to control signals from the system control device 41. etc. signals are also output. The functions of the video disc player 31 include stop, normal play, fast forward play, skip play, reverse play, still image play, and special playback functions, and these functions are set. You can also do that. Further, the moving position of the arm device 35 can be changed in various ways, and this can also be changed by a command from the microphone computer 33. For example, the carrying device 36 obtains power from a turntable Tanabata for rotating the disk through a clutch and a speed reduction mechanism, and thereby the arm device 35
is moving in parallel. Therefore, if it is desired to quickly jump up and move the arm device 35 across the recording line, this can be achieved by increasing the rotational speed of the turntable motor or by changing the speed ratio of the speed reduction mechanism. During the jump, the playback image □ is muted. Further, the moving speed switching time of the arm device 35 is set depending on the jumping distance. If you want to jump up the % line in the east, change the speed of movement (in seconds).

These control codes are generated by the micro combinator 33 and output as control signals via the system control device 41.

! The receiver 33 can input an image signal for muting the reproduced video signal to the video signal processing circuit 38 via the video signal control circuit 42. It is also possible to output fixed signals such as characters, figures, symbols, etc. via the video signal control circuit 42 and to superimpose them on the reproduced video signal. Furthermore, the micro combinator 31 extracts a synchronization signal, digital data, etc. from the reproduced video signal via a reproduction detection circuit 43.
(program data, recording line number, start code, 1m continuous code, end code, etc.) can also be imported. The microcomputer 33 includes a central processing unit (CPU) 44 and a read-only memory (j
lOM) 45, random access memory (RMM) 46
etc., and can also read input data from the keyboard 47.

Now, a video disc l as explained in Figs. 1 and 2
! Or, the program-reading processing operation when reproducing 22 will be explained.

The flowchart for program reading and abstraction processing is set as shown in Figures #1 and 4, for example, and is recorded in the ROM 45 (7) as a υJ fixed program. ``When handling such video discs, the special playback mode is set, unlike the normal playback mode for playing regular discs such as Eirin. A special playback mode switch is provided on the keyboard 47.

When the video disk has been loaded and the start switch is pressed (step Fl), a determination as to whether the special playback mode or the normal playback mode is to be made is made at step 1F. In the case of the normal reproduction mode, the process moves to step G1, and the microcomputer 33 sets the video disc player 31 to the normal reproduction mode. In the case of a special playback program, the process moves to step 1s, where it is determined whether the program start code and program end code have already been stored in the work area of the RAM 46. If the program start code and end code are stored, it means that the program data has already been stored in the program area, so step G! , and this time,
The mode will change according to the loaded program. If both the program start code and end code are missing, the process moves to step 14. In this step, it is determined whether the reproduced signal is a start code or not.

The reproduction signal is input from the buffer circuit of the reproduction detection circuit 43. Assuming that the mu side is being played now,
Since the start code exists, move to Step S. In this step 1, it is determined whether or not the continuation food is currently being input. If the playback of the program has just started, the continuation code will not be played yet. in this case,
Move on to step 1. In step 1, it is determined whether an end code is currently being input. Immediately after the playback of the music screen begins, the end code is not played yet. In this case, the process moves to step y@ to read the four-gram program of the program surface, resulting in a processing loop of steps IP@, )'v. When a continuation code is detected in step 1, step? - and change its continuation code to RA
Write to the work area of M46.

When this writing is completed, the process moves to step P1.jv--
Set y to 1-th ζ. In this case, the character RO
Using character data such as M, select [Please play side B next.] ” may be displayed, or may be given by voice.

The end code is detected in step 11 in Figure 2! This is the case of 7-bit disc recording as shown. In this case, the end code is written in the RAM in step Fst, and the process moves to step 1s.

In step 14, if the start code is not currently being input, the process moves to step y1m. In step 1, it is determined whether the continuation code has already been written in the work area of the RAM. If it has been recorded, the process moves to step yts and it is determined whether the end code is currently being input. Immediately after the 1st page starts to be generated, there is no end, so the process moves to step F14, where the program data for the B side is read and loaded, and step IP
Form a loop of 1s% IP14. If the end is detected, program loading is finished, and the process moves to step 1s via step 'i'll.

Step 11 If the continuation code is not stored in the snow, move to step νIs and switch the video disc player 31 to play the warning information and recording section. In this case, the warning information is recorded on the l line. If there is (several fields), switch the player to still image mode and enter a stop operation in step 11.6
This kind of processing loop occurs when side B is played back first by mistake. The warning image is ``Incorrect operation. Please play from the previous page.''

” is the content of the table.

As described above, the present invention provides a video disc playback device that improves the operability of the video disc player and provides accurate handling.

[Brief explanation of the drawing]

FIG. 1 a = d, FIGS. 2 G to d are explanatory diagrams showing a recording set of a video disc according to the present invention, FIG. 3 is a configuration explanatory diagram showing an embodiment of the present invention, and FIG. FIG. 4 is a flowchart shown to explain the operation of the system of FIG. 3; FIG. 12.22...Program start code 14...
Program continuation code 13.23...Program data 17.24 Program end code 15.25...Warning information-3TI...Video disc player 3'3...Micro combinator Applicant's attorney Patent attorney Takehiko Suzue (a) Figure 1 (b)

Claims (1)

[Claims] For a video disc number ζ on which video signal information is recorded in a concentric spiral number ζ on the disc surface, a pickup element is made to correspond to the recording line of the information. Then, program start code information is recorded on the outermost periphery of one board, information on the program start code is recorded on the inner periphery, and program continuous code O information is recorded on this information O#I. Alternatively, the line program end code information is recorded, and next to this information, the image information to be printed is recorded in the above program, and at least the outermost part of the other board surface The information for instructing the playback order is recorded, and the 19th video daily is played back, and the playback signal is introduced into the memory number ζ.
and storing means for reproducing and displaying the false information only when the program start code is not introduced and the program program end code %L< is already stored. A video disc playback device characterized by: