JPH02108272A - Information recording disc playback device - Google Patents

Abstract

PURPOSE:To realize a desired reproducing operation which differs in every disk fro one another by discriminating a disk from a bit of discriminating information and performing an operation control based on a bit of additive information on the disk concerned as stored in advance. CONSTITUTION:When an information recording disk 11 is loaded, a pickup 12 is moved from a read-in area of the innermost circumferential part to the outside in the radial direction, so as to read out a bit of code information. When a bit of discriminating reference code information is detected by an information detecting part 14, upon each detection, a discriminating information detecting part 16 detects a distance D1 between a vertical synchronizing signal recorded in a position V1 on an information track T1 where the code information has been detected and a vertical synchronizing signal recorded in a position as shown by V2 of an information track T2 in a constant positional relation-ship with the above information track T1. This distance is referred as a bit of discriminating information to those bits of discriminating information stored in a storage part 17, and hence the disk 11 is discriminated. Then, the additive information corresponding to this discriminating information is given to an additive information output part 19, so that the disk is put under the operation control.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to an information recording disk, such as a laser disk, on which code information for identifying a plurality of pieces of recorded information is recorded together with recorded information such as video. The present invention relates to an information recording disc reproducing device that reproduces the recorded information.

[Conventional technology]

A compact disc playback device that identifies multiple compact discs and controls the 11 titles based on additional information (such as track title and playback order) that is input in advance for each compact disc. has traditionally been used. The basic configuration of such a compact disc playback device is shown in FIG.

Information recorded on the compact disc 31 is read by a pickup 32. The radial position of this pickup 32 with respect to the compact disc 31 is
It is controlled by the position control section 33, whereby each piece of information recorded on the compact disc 31 is selectively reproduced.

The code information detection section 34 detects a subcode from the output of the pink amplifier 32. From this detected subcode, the dock information detection unit 36 detects code information that corresponds to the table of contents of the recorded contents of the compact disc 31.
A dock (TOC; Table of C) recorded in the lead-in area on the innermost circumference of the compact disc 31.
contents ) information is detected. This dock information is given to the storage section 37. This compact disc playback device uses this dock information as identification information for identifying a plurality of compact discs.

The first information section 37 further receives input information from an additional information input section 38 including a key input device, etc. from an additional information input section 38 that includes a key input device, etc. Additional information freely determined by the user of the playback device is input. In the storage unit 37,
The dock information for 31 compact discs and the additional information input regarding this compact disc 31 are combined and stored.

The stored contents of the storage section 37 are provided to an additional information output section 39 that includes display means (not shown) for displaying various operating states of the compact disc playback device, and are also provided to the dock information detection section 36. It is given.

The operation when the user stores additional information such as the title and the playback order of a plurality of songs in the storage section 37 corresponding to the loaded compact disc 31 will be described. First, the tonk information detecting section 36 gives a command to the position control section 33 based on the subcode detected by the code information detecting section 34 to move the pin to the compact disc 32.
After this movement, the dock information is detected from the subcode output by the code information detection section 34. However, when the pickup 32 is already located at the reading position of the lead-in area, the pickup 32 is not moved.The detected dock information is combined with additional information from the additional information input section 38 and stored. The information is stored in the section 37. After such operations are performed for a plurality of compact discs, the docking information of the plurality of compact discs and the corresponding additional information are stored in pairs in the storage unit 37, respectively.

Next, the reproduction operation of this compact disc reproduction apparatus based on the additional information will be explained. When the compact disc 31 whose additional information and dock information are combined and stored in the storage section 37 as described above is loaded, the dock information detection section 36 stores the detected dock information and the storage section 37. The additional information stored corresponding to the dock information is retrieved by comparing it with the stored dock information. The retrieved additional information is provided to the additional information output section 39, where the titles of the songs to be played are displayed, the playback order is automatically specified, and the like.

[Invention tries to solve! ! Title]

Video discs, etc., do not record information that corresponds to the table of contents of the recorded information and can be used as identification information, like dock information on compact discs. Since the loaded video disc cannot be identified in the video disc, it is impossible to realize automatic control of the video disc playback device based on the additional information as described above.

An object of the present invention is to provide an information recording disk reproducing device that can automatically perform different desired reproducing operations for each loaded information recording disk, thereby greatly improving convenience.

[Means to solve the problem]

The information recording disk reproducing apparatus according to claim (1) includes a pickup for reading recorded information on the information recording disk, a moving means for moving the pickup in a radial direction with respect to the information recording disk, and an output signal from the pickup. code information detection means for detecting code information recorded on the information recording disk together with the recording information; synchronization signal detection means for detecting a synchronization signal recorded on the information recording disk together with the recording information from the output signal of the pickup; and the code. When the information detection means detects predetermined identification standard code information from the code information,
At the time of this detection, a control signal is given to the moving means for moving the pick amplifier to an information track in a predetermined positional relationship with respect to the information track traced by the pink-up, and the pickup is moved on each information track before and after this movement. Identification that detects the distance between the recording positions on the information recording disk of the synchronization signals read and detected by the synchronization signal detection means, and uses this distance information as identification information for identifying the plurality of information recording disks. information detection means; additional information input means for inputting additional information corresponding to each of the plurality of information recording discs; and identification information detected by the identification information detection means corresponding to the identification reference code information and the a storage means for storing the information in combination with additional information, and when an information recording disk is loaded, detecting the identification information of the loaded information recording disk;
A claim characterized in that the detected identification information is compared with the storage contents of the storage means, additional information corresponding to the loaded information recording disk is read out, and operation control is performed based on this additional information. The information recording disc reproducing apparatus of item (2) includes a pickup that reads recorded information on the information recording disc, and a code information detection means that detects a code↑brochure recorded on the information recording disc together with the recorded information from the output signal of this pickup. and when the code information detection means detects predetermined identification standard code information from the code information,
an identification information detection stage f which detects the angular velocity of the information recording disk and uses this angular velocity information as identification information for identifying the plurality of information recording disks; and inputting additional information corresponding to each of the plurality of information recording disks. and a storage means for storing a combination of identification information detected by the identification information detection means corresponding to the identification reference code information and the additional information, and a storage means for storing a combination of the identification information detected by the identification information detection means corresponding to the identification reference code information, and Sometimes, the identification information of the loaded information recording disk is detected, and the detected identification information is compared with the storage contents of the storage means to read additional information corresponding to the loaded information recording disk. A feature is that operation control is performed based on additional information.

[Effect]

Code information for identifying a plurality of pieces of recorded information and a synchronization signal for controlling playback operations are recorded on the information track of the information recording disk together with the recorded information. The recorded information is reproduced while keeping the linear velocity constant. This recorded information is read by a pick amplifier that is moved by a moving means in the radial direction of the information recording disk.

The information amount of each of the plurality of recorded information recorded on the information recording disk will never be lost among the plurality of information recording disks on which different recorded information is recorded. The radial position of
There are differences between different information recording discs. Therefore, if the radial position traced by the pickup when the code information changes and the predetermined identification reference code information is detected is specified, a plurality of information recording discs can be identified.

The information recording disk is reproduced by keeping the linear velocity of the information track constant, and therefore the distance between each recording position between two information tracks in a predetermined positional relationship of the synchronization signal recorded at equal intervals. differs depending on the radial position of one of the two information tracks of interest, and therefore the distance between each recording position of this synchronization signal corresponds to the radial position. In the information recording disc reproducing device according to claim (1),
When the identification reference code information is detected in the code information detection means by the identification information detection means, the pink amplifier is placed on an information track that is in a predetermined positional relationship with respect to the information track that the pink-up traces at the time of this detection. The pickup reads each of the information tracks before and after the movement, and the distance between the recording positions on the information recording disk of the synchronization signal detected by the synchronization signal detection means is detected, and this distance information is used as a plurality of information. It is used as identification information for identifying the recording disc. That is, the identification information detected by the identification information detection means corresponds to the radial position on the information recording disk when the code information changes to the predetermined identification reference code information. In this way, the claim (
In the information recording disc reproducing apparatus of 1), a plurality of information recording discs can be identified by the identification information, which is the distance information.

Furthermore, since the recorded information on the information recording disk is reproduced while keeping the linear velocity of the information track constant, the radial position when the code information changes and the predetermined identification reference code information is detected is , there is also a one-to-one correspondence with the angular velocity of the information recording disk at this time. Claims (
In the information recording disk reproducing device (2), this angular velocity information is detected by the identification information detection means and used as identification information. Therefore, in the information recording disc reproducing apparatus of claim (2), a plurality of information recording discs can be identified by the identification information that is the angular velocity information.

Additional information input from the additional information input means for controlling the operation of the information recording disc reproducing apparatus is combined with the identification information and stored in the storage means.

When an information recording disc is loaded into this information recording disc reproducing device, the identification information is detected for the loaded information recording disc, and the detected identification information and the plurality of information stored in the storage means are detected. The identification information corresponding to the information recording disk is collated, the detected identification information and the identification information that is defeated in this way are searched, and the additional information corresponding to the searched identification information is read out from the storage means. Operation control is performed based on the additional information on the lever. In this way, different operation controls corresponding to each information recording disk can be automatically performed for each of the plurality of information recording disks without having to be set each time each information recording disk is loaded.

(Embodiment) Fig. 1 is a block diagram showing the basic configuration of an information recording disc playback device (hereinafter referred to as "playback device") according to an embodiment of the present invention. It reproduces recorded information such as video and audio recorded on the information recording disk 11, and is equipped with a pink-up 12 such as an optical pickup.The information recording disk 11 has recorded information on information tracks. In addition, there are 24 times during the vertical blanking period of the video signal.
It is called a bit code and records code information used to display the number and time of the song being played.

The code information includes a lead-in code that instructs the start of the program, a lead-out code that instructs the end of the program, a picture code attached to each image making up the program, and a chapter code attached to the song title or scene. In this embodiment, the chapter code and lead-out code are mainly used for their characteristic operations.

This playback device further includes a moving section 13 that moves the pickup 12 in the radial direction of the information recording disk 11, a code information detection section 14 that detects the code information from the output signal of the big amplifier 12, and a code information detection section 14 that detects the code information from the output signal of the big amplifier 12. A synchronizing signal detecting section 15 detects a vertical synchronizing signal of a video signal from the output signals of 12; an identification information detecting section 16 detects identification information as described later; Additional information input unit 1 for inputting additional information for controlling the playback operation of the playback device
8, and a storage section 17 that stores a combination of the identification information detected by the identification information detection section 16 and the additional information.

The additional information is the title of each scene or song recorded on the information recording disc 11, the playback order of the scene or song, etc., and the user of this playback device operates the additional information input section 18. Accordingly, settings can be made for each of a plurality of information recording discs. For example, when the recorded information on the information recording disc 11 is reproduced, the title is displayed and outputted in the additional information output unit 19 connected to the storage unit 17 and configured to include display means and the like.

First, the operation when writing the additional information to the storage section 17 will be explained. The identification information detection section 16 is the code information detection section 1
A command is given to the moving unit 13 based on the code information detected at 4, and the pickup 12 is moved from the lead-in area (inward in the radial direction) to the lead-out area (outward in the radial direction) of the information recording disk 11. (arrow R1 direction).

Then, predetermined identification reference code information (for example, chapter number 2, chapter number 4, etc., and specific code information such as code information indicating a lead-out area, at least one of which is set in this playback device. When the code information) is detected by the code information detection section 14, the pickup 1
A control signal for stopping the movement of the moving unit 13 is given to the moving unit 13.

As a result, the pickup 12 is stopped at the start position of chapter number 2, the start position of chapter number 4, the start position of the lead-out area, and the like.

When the movement of the pickup 12 in the radial direction is stopped, the identification information detection section 16 receives the detection output from the synchronization signal detection section 15, and when the vertical synchronization signal is detected, the movement section 13 detects the detection output of the pickup 12. A control signal is given to move the information track to a radial position corresponding to another information track in a predetermined positional relationship with respect to the information track currently being traced. The predetermined positional relationship is, for example, adjacent or separated by a predetermined information track distance, and the movement causes the pickup 12 to be adjacent to the information track that is currently being traced on the radially outer side. The information track will now be traced. The identification information detection section 16 obtains the detection output from the synchronization signal detection section 15 again after the pink-up 12 has moved, and detects the vertical synchronization signal detected before the pick amplifier 12 moves and the vertical synchronization signal detected after the pick amplifier 12 moves. A detection time difference between the two signals is detected, and this detection time difference is recorded on the information recording disk 11
It is given to the storage unit 17 as identification information.

Detection of such identification information is performed in relation to each piece of the predetermined code information.

FIG. 2 shows a simplified recording position of the vertical synchronization signal on the information recording disk II.

In FIG. 2, the recording position of the vertical synchronizing signal is indicated by the reference symbol ■. Since the information recorded on the information recording disk 11 is reproduced while keeping the linear velocity of the information track constant, vertical synchronization signals recorded at equal intervals are recorded at equal intervals on the information track. Therefore, when an information track is recorded on Saturday and Sunday, the recording position of the vertical synchronization signal on that information track and that of other information tracks (for example, adjacent information tracks) that are in a certain positional relationship with respect to this information track of interest are The distance from the recording position of the vertical synchronization signal is a value that depends on the radial position of the information track of interest on the information recording disk 11. Therefore, by detecting the distance between the recording positions of the two vertical synchronization signals, the radial position of the information track of interest on the information recording disk 11 can be specified.

In this embodiment, the identification information detection section 16 detects the distance between each recording position of the vertical synchronization signal recorded in the noted information track and the specific information track, and this distance information is It is used as identification information for identifying the information recording disc. For example, a distance D1 shown in FIG. 2 is measured between adjacent tracks, and a distance D2 is measured when the two information tracks are separated by two information tracks.

FIG. 3 is a diagram for explaining a method of measuring the distance jilDI. In FIG. 3, the reading path of the pickup 12 is shown by a broken line. Assuming that the predetermined identification reference code information is detected in the information track T1 in FIG. It is assumed that the information track is set to the adjacent information track.

The vertical synchronization signal recorded at the position indicated by the reference symbol v1 on the information track TI is detected by the synchronization signal detection section 15,
When the detection output is given to the identification information detection section 16, the moving section 1 receives a control signal from the identification information detection section 16.
3 moves the pickup 12 to the adjacent information track T2. When the vertical synchronization signal recorded on this information track T2 at the position indicated by the pink amplifier reference symbol ■2 is detected by the synchronization signal detection section 15, in response to this detection output, the identification information detection section 16 detects the information of the pink amplifier 12. A detection time difference between vertical synchronization signals before and after the movement is detected. Since the information recording disk 11 reproduces the recorded information while keeping the linear velocity of the information track constant as described above, the detection time difference accurately corresponds to the distance i11D1 between the positions indicated by reference symbols Vl and V2. do. Therefore, this identification information detection section 16 measures this distance D1, so to speak, and transmits information corresponding to this distance i@iD1 to the information recording disk 11.
This will be given to the storage unit 17 as identification information.

This identification information is stored in the storage unit 17 in combination with the above-mentioned additional information from the additional information input means. Writing of this additional information can be performed on a plurality of information recording disks 11, and after such a writing operation is completed, a plurality of pairs of identification information and the additional information are stored in the storage unit 17. remembered.

As described above, the identification information is detected with respect to the position where the predetermined identification reference code information is detected, that is, for example, the start position of chapter number 2, the start position of chapter number 4, and the start position of the lead-out area. , therefore corresponds to the radial position on the information recording disk 11 of each of the starting positions. The radial position of each of the starting positions varies depending on the length of each scene or song, and therefore is not the same among a plurality of information recording disks on which different recording information is recorded.

Therefore, by obtaining at least one piece of identification information for one information recording disc, it is possible to identify a plurality of information recording discs.

Next, the playback operation in this playback device will be explained.

When the information recording disc 11 is loaded, the pickup 1
2 moves to the lead-in area at the innermost circumference of the information recording disk 11 under the control of the moving unit 13, and moves from this lead-in area outward in the radial direction while reading code information. In this way, the predetermined identification standard code information, that is, chapter number 2. Chadek number 4. When a lead-out code or the like is detected by the code information detection unit 14, at each detection time, the identification information detection unit 16 uses the vertical synchronization signal recorded on the information track where the code information is detected and The distance between the recording position of the vertical synchronization signal recorded on the information track in the determined positional relationship (that is, the identification information of the loaded information recording disk 11) is detected in the same manner as described above. Next, this identification information is compared with the identification information stored in the storage unit 17, and based on the identification information corresponding to the detected identification standard code information, the loaded information recording disk is will be identified.

When the storage unit 17 stores identification information similar to the detected information, additional information corresponding to this identification information is provided to the additional information output unit 19, and operation control is performed based on this additional information. That is, playback is performed by changing the order of scenes and songs, and the titles of the scenes and songs to be played are displayed and output.

In this way, according to the playback device of this embodiment, the loaded information recording disc can be identified even if the information recording disc is not recorded with dock information, such as a compact disc such as a video disc. Since the operation control is performed based on the additional information input corresponding to the loaded information recording disc, different playback operations are automatically performed for each of the plurality of information recording discs, increasing convenience. will be significantly improved.

FIG. 4 is a pronk diagram showing the basic configuration of another embodiment of the invention. In FIG. 4, the same parts as those shown in FIG. 1 described above are given the same reference numerals. In the reproducing apparatus of this embodiment, when at least one predetermined identification reference code information is detected by the code information detection section 14, the angular velocity of the information recording disk 11 at the time of this detection is detected. Since the information recorded on the information recording disk 11 is reproduced while keeping the linear velocity of the information track constant, the radial position of the information track traced by the pickup 12 on the information recording disk 11 and the information recording What is the angular velocity of the disk 11?1
Corresponds to 1. The radial position on the information recording disk ll where the identification reference code information, which is the specific code information as described above, is recorded differs for each of the plurality of information recording disks, and therefore corresponds to the predetermined identification reference code information. The angular velocity information detected can be used as identification information for identifying a plurality of information recording disks.

In this embodiment, a rotation angle detection section 25 is provided to detect the rotation angle of the information recording disk 11, and in response to the output of this rotation angle detection section 25, the identification information detection section 26 detects the angular velocity of the information recording disk 11. This angular velocity information is used as identification information of the information recording disk 11. The identification information detection section 26 receives the output from the rotation angle detection section 25 when the code information detection section 14 detects the predetermined identification reference code information, and calculates the rotation angle of the information recording disk 11 in a certain period of time. The angular velocity is detected from the change, and the angular velocity information thus obtained is input into the storage unit 27 as identification information. In this way, this storage section 27 has
The identification information and the additional information from the additional information input section 18 are combined and stored.

When the information recording disk 11 is loaded, the identification information, which is the angular velocity information, is detected, and the detected identification information is compared with the identification information stored in the section 9 27. When the storage contents of the storage unit 27 are searched in this way and the same identification information as the detected identification information is found,
Additional information stored in combination with the identification information is read out to the additional information output section 19. In this manner, in this embodiment, a plurality of information recording disks 11 are identified by the identification information, which is the angular velocity information, and the same effects as in the first embodiment described above can be obtained.

〔Effect of the invention〕

According to the information recording disc reproducing apparatus of the present invention, when predetermined identification standard code information is detected,
In the information recording disc reproducing apparatus of 1), each recording of a synchronization signal recorded on an information track in which the identification reference code information is recorded and a synchronization signal recorded on an information track having a predetermined relationship with the information track. Distance information is detected by detecting the distance between positions, and in the information recording disc reproducing apparatus according to claim (2), by detecting the angular velocity of the information recording disc at the time of detecting the code information. The angular velocity information is used as identification information for identifying a plurality of information recording disks. Additional information for controlling the playback operation of the information recording disc playback device is stored in combination in correspondence with this identification information, and when loading the information recording disc, the identification information is detected and the loaded information recording The disk is identified, additional information corresponding to this information recording disk is read from the storage means, and operation control is performed based on this additional information. In this way, in this information recording disk playback device, even if the information recording disk does not have information corresponding to the table of contents of the recorded contents recorded on the information recording disk, such as a compact disk, the information recording disk differs depending on the loaded information recording disk. Desired playback operations can now be performed automatically, thus greatly improving convenience.

[Brief explanation of the drawing]

FIG. 1 is a block diagram showing the basic configuration of an information recording disc reproducing apparatus according to an embodiment of the present invention, FIG. FIG. 3 is a diagram for explaining a method of detecting the distance between recording positions of vertical synchronization signals in the identification information detection section 16, and FIG. 4 is a block diagram showing the basic configuration of another embodiment of the present invention. FIG. 5 is a block diagram showing the basic configuration of a typical prior art. DESCRIPTION OF SYMBOLS 11... Information recording disk, 12... Pink amplifier, 13... Moving part, 14... Code information detection part, 1
626...Identification information detection section, 17.27...Storage section, 18...Additional information input section, 25...Rotation angle detection section/11 Fig. 1 λ

Claims (2)

[Claims] (1) On the information track, code information for identifying multiple pieces of recorded information and a synchronization signal for controlling the playback operation are used to keep the recorded information on the information recording disk recorded together with the recorded information at a constant linear velocity. In the information recording disk reproducing apparatus, a pickup reads information recorded on the information recording disk; a moving means moves the pickup in a radial direction relative to the information recording disk; code information detection means for detecting information; synchronization signal detection means for detecting the synchronization signal from the output signal of the pickup; and predetermined identification reference code information is detected from the code information in the code information detection means. When
At the time of this detection, a control signal for moving the pickup to an information track in a predetermined positional relationship with respect to the information track traced by the pickup is given to the moving means, and the pickup reads each information track before and after this movement. identification information detection for detecting the distance between recording positions on the information recording disk of the synchronization signal detected by the synchronization signal detection means, and using this distance information as identification information for identifying a plurality of information recording disks; additional information input means for inputting additional information corresponding to each of the plurality of information recording discs; identification information detected by the identification information detection means in correspondence with the identification reference code information and the additional information; and a storage means for storing a combination of information recording discs, and when loading an information recording disc, detecting the identification information of the loaded information recording disc,
Information characterized in that the detected identification information is compared with the storage contents of the storage means, additional information corresponding to the loaded information recording disk is read out, and operation control is performed based on this additional information. Recording disc playback device. (2) In an information recording disk reproducing apparatus that reproduces recorded information of an information recording disk in which code information for identifying a plurality of pieces of recorded information is recorded on an information track together with the recorded information while keeping a constant linear velocity, the information recording disk a pickup for reading recorded information; a code information detection means for detecting the code information from an output signal of the pickup; and when the code information detection means detects predetermined identification reference code information from the code information. To,
identification information detection means for detecting the angular velocity of the information recording disk and using this angular velocity information as identification information for identifying the plurality of information recording disks; and inputting additional information corresponding to each of the plurality of information recording disks. additional information input means; storage means for storing a combination of the identification information detected by the identification information detection means corresponding to the identification reference code information and the additional information; , detects the identification information of the loaded information recording disk, collates the detected identification information with the storage contents of the storage means, reads additional information corresponding to the loaded information recording disk, and reads out the additional information corresponding to the loaded information recording disk; An information recording disc reproducing device characterized in that operation control is performed based on information.