JPH0736757A - Individual recognition system for recording medium - Google Patents

Abstract

PURPOSE:To automatically perform the individual recognition of a read-only recording medium for a CD for audio, etc., on which no identifier is recorded. CONSTITUTION:A contents part called as a TOC representing the start address of music recorded on the CD 5 for audio, etc., is also recorded on the CD 5 for audio. Also, the content of the contents part of each CD for audio and identification information attached on each CD for audio are registered corresponding to each other on a contents data base 6. When the individual recognition of the CD 5 for audio is performed, a reading part 3 reads the content of the contents part of the CD 5 for audio, and a retrieval part 4 retrieves the contents data base 6 setting the content of the contents part as a key, and acquires the identification information registered corresponding to the content of the contents part.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a recording medium individual recognition system for individually recognizing a read-only recording medium such as an audio CD, and more particularly, recording for performing individual recognition by using a table of contents of each recording medium. A method of individually recognizing a medium.

[0002]

2. Description of the Related Art In a read-only recording medium such as an audio CD, it has been conventionally practiced to individually control each recording medium. For example, in the case of audio CDs, the music to be reproduced is programmed for each CD.

By the way, in order to perform separate control for each recording medium, it is necessary to individually recognize the recording medium in a device such as a CD player. There is a case where the management identifier for identifying is not recorded.

In such a case, in the past, the operator has used C
By inputting an identifier indicating a mounted recording medium to a device such as a D player, the device is made to individually recognize the recording medium and control is performed according to the recognition result.

[0005]

As described above, conventionally, when the recording medium is individually recognized by the device, the operator inputs the identifier of the recording medium into the device, which imposes a burden on the operator. There is a problem that there is a possibility that an input error may occur.

An object of the present invention is to provide a recording medium individual recognition method capable of individually recognizing a recording medium without an operator's input operation of the identifier even if the management identifier is not recorded on the recording medium. To provide.

[0007]

In order to achieve the above object, the present invention provides an individual recognition method for a recording medium having one or a plurality of data blocks and a table of contents for the data blocks. By searching the table of contents database by using the table of contents database in which the contents of the table of contents of the medium and the identification information given to each recording medium correspond to each other and the contents of the table of contents of the read recording medium as a key And a search unit that acquires the identification information of the storage medium.

[0008]

In the table of contents database, the contents of the table of contents of each recording medium and the identification information given to each recording medium are registered in association with each other.

The search unit reads the table of contents of the recording medium,
The contents information is used as a key to search the table of contents database to obtain the identification information given to the recording medium.

[0010]

Embodiments of the present invention will now be described in detail with reference to the drawings.

FIG. 1 is a block diagram when the present invention is applied to a CD player, which includes a control unit 1, an operation unit 2, a reading unit 3, a searching unit 4, and a read-only recording medium for audio. It includes a CD 5, a table of contents database 6, and a performance program storage unit 7.

The audio CD 5 is a TOC (Tabl
2. It has a table of contents section 51 called "e Of Contents" shown in FIG. In the table-of-contents section 51, the numbers and start addresses of the respective music pieces (each data block) recorded on the audio CD 5 are recorded in association with each other. The audio CD 5 shown in FIG. 2 has a table of contents section 51 in which the numbers and starting addresses of the songs are recorded in correspondence with each other.
There is also an audio CD having a table of contents in which the number of each song and the length of each song are recorded in correspondence with each other.

FIG. 3 is a diagram showing an example of the contents of the table-of-contents database 6, and medium information records 6-1, ..., 6-n, corresponding to the respective audio CDs reproduced by this CD player.
... is stored. Each medium information record 6-1, ...,
6-n, ... are contents information 61-1, ..., 61-n ,.
, And identification information 62-1, ..., 62-n ,.

The control unit 1 has a function of controlling each unit of the apparatus.

The operation unit 2 is used when the operator instructs the control unit 1 on the contents of control.

The reading unit 3 has a function of reading information recorded on the audio CD 5.

The search section 4 has a function of searching the table of contents database 6 by using the table of contents section 51 read by the reading section 3 as a key.

The performance program storage unit 7 stores the number of the music piece to be played and the mode (repeat mode, etc.) corresponding to the identification information of each audio CD.

FIG. 4 is a flow chart showing an example of processing of the search unit 4, and the operation of this embodiment will be described below with reference to the drawings.

When the operator wants to reproduce the audio CD 5 in accordance with the information stored in the performance program storage unit 7, the operator instructs the operation unit 2 to that effect.

When the above-mentioned instruction is input, the control section 1 controls the reading section 3 to read the table of contents section 51 recorded on the audio CD 5.

When the reading section 3 reads the table of contents section 51 of the audio CD 5, the reading section 3 passes it to the search section 4.

The search section 4 is read from the reading section 3 to the table of contents section 51.
4 is started, the process shown in the flowchart of FIG. 4 is started. First, the medium information record 6-1 in the table of contents database 6,
Pay attention to the first medium information 6-1 among ..., 6-n, ...
(Step S1).

Next, the search unit 4 uses the medium information record 6
The contents of the table of contents information 61-1 in -1 are compared with the contents of the table of contents unit 51 passed from the reading unit 3 (step S
2).

When it is determined that the two completely match (Yes in step S3), the process of step S7 is performed, and when it is determined that they do not match (step S3).
If 3 is no), the process of step S4 is performed.

In the case of this example, the contents of the table-of-contents part 51 and the contents of the table-of-contents information 61-1 are different, as can be seen by comparing FIGS. 2 and 3, so the search part 4 proceeds to step S4. At this point, attention is paid to the next medium information record 6-2.

After that, in step S5, the retrieval unit 4 determines whether or not the next medium information record 6-2 exists, and when it determines that the next medium information record 6-2 exists (yes in step S5).
s) returns to the processing of step S3, and when it is determined that there is not (step S5 is no), an error notification is sent to the control unit 1.
After that (step S6), the process ends.

In the case of this example, since the medium information record 6-2 exists, the process of step S2 is performed again.

Thereafter, the same processing as described above is repeated until the determination result of step S3 becomes yes.

Then, the determination result of step S3 is yes.
Then, the search unit 4 returns the identification information in the medium record information of the current interest to the control unit 1 (step S7),
The process ends.

In the case of this example, as can be seen from FIGS. 2 and 3, the index information 61 of the n-th medium information record 6-n.
Since the content of -n is the same as the content of the table-of-contents section 51, the retrieval section 4 determines that the identification information 62- in the medium information record 6-n
n (the content is IDn) is returned to the control unit 1 and the processing ends.

The control unit 1 receives the identification information 62-from the search unit 4.
When n is returned, the content program IDn is used as a key to search the performance program storage section 7, and each section is controlled so that the audio CD 5 is reproduced in accordance with the recorded music number and mode. . When the above-mentioned identification information IDn is not registered in the performance program storage unit 7, each unit is controlled so that the audio CD 5 is reproduced in order from the first music piece.

Further, when the search unit 4 gives an error notification, the control unit 1 displays a message to that effect on a display unit (not shown) to inform the operator of the information about the audio CD 5. Notify that it is not stored in the table of contents database 6.

[0034]

As described above, the present invention has the table of contents database in which the contents of the table of contents of each storage medium and the identification information given to each storage medium are registered in correspondence with each other, and When performing individual recognition, the search unit searches the table of contents database using the contents of the table of contents of the recording medium for which individual recognition is to be performed as a key, and acquires its identification information. There is an effect that individual recording media can be automatically recognized without performing an input operation. So, like an audio CD,
When the present invention is applied to the individual recognition of a read-only recording medium having a plurality of tracks and the track information of many mediums is not duplicated, the effect is very large.

[Brief description of drawings]

FIG. 1 is a block diagram of an embodiment of the present invention.

FIG. 2 is a diagram showing an example of contents of a table of contents section 51.

FIG. 3 is a diagram showing an example of contents of a table of contents database 6.

FIG. 4 is a flowchart showing a processing example of a search unit 4.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Control part 2 ... Operation part 3 ... Reading part 4 ... Search part 5 ... Audio CD 6 ... Table of contents database 7 ... Performance program storage part 51 ... Table of contents part

Claims (2)

[Claims] 1. In an individual recognition method for a recording medium having one or a plurality of data blocks and having a table of contents for the data blocks, the contents of the table of contents of each recording medium and the contents of the table of contents are assigned to each recording medium. And a search unit that acquires the identification information of the storage medium by searching the table of contents database by using the read contents of the table of contents of the recording medium as a key. An individual recognition method of a recording medium characterized by being provided. 2. The individual recognition system for a recording medium according to claim 1, wherein the table of contents includes information indicating a start position or a length of a data block in the recording medium in which the table of contents is provided.