JP2529368B2 - Character information recording / reproducing device - Google Patents

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a character information recording / reproducing apparatus for recording / reproducing character information accompanying main information such as video / audio together with the main information.

2. Description of the Related Art In a conventional magnetic tape reproducing apparatus, as an apparatus for recording and reproducing character information together with main information, for example, Japanese Patent Laid-Open No.
-167473.

In the prior art disclosed here, while reproducing main information from a tape recording medium, character information is input using an input device and stored in a memory storage means of the recording / reproducing device, and at the time of subsequent reproduction, It is intended to display the stored character information by referring to the tape position information.

DISCLOSURE OF THE INVENTION Problems to be Solved by the Invention In the prior art, when the tape recording medium on which the main information is recorded is replaced, the contents of the memory storage means of the recording / reproducing apparatus must be replaced accordingly. Since the main information and the character information are recorded on different media in this way, there is a problem that it is difficult to centrally manage and control the tapes of both media.

In view of the above problems, it is a common object of the present invention to provide a novel device for recording and reproducing main information and character information on the same medium.

In addition, when the track for recording the character information is shared with other sub information, it is necessary to retain the main information and prevent the character information from being partially erased even if only the sub information is changed and recorded. This is a technical issue.

In addition, in a medium such as a music tape that has been recorded and has been identified to allow only playback, the position of the main information and the text information can be deeply linked so that the text information playback display during playback can be parallel to the main information. The second technical issue is to

Next, in the renumbering operation of sequentially changing and recording the program number, the comparison table data of the character information, the program number, and the position information is stored in parallel in the memory, and at the end of the renumbering, it is stored in a specific area of the medium for recording the main information. A third technical problem is to be able to record the contents list data of the medium easily and in a short time.

Finally, at the time of reproduction, the comparison table is read in advance so that the character information can be displayed in parallel, and a character information recording / reproducing apparatus that can easily operate the program search and the program reproduction by moving the cursor on the display unit or designating the number is provided. This is the fourth technical problem.

Means for Solving the Problems A first character information recording / reproducing apparatus of the present invention records main information in a main area and records sub data including character information in a sub area separated from the main area. The main area and the sub area are recorded by the amount corresponding to the time length of the program, and the sub area is provided with a system control unit for recording character information only in the first predetermined period of the program. The character information recording / reproducing apparatus includes an identification code detecting means for detecting an identification code of character information indicating a relation between a recording position of character information and a recording position of main information, and reproduced character information based on the identification code of the detected character information. A system for switching between a first display mode for immediately displaying an image and a second display mode for storing reproduced character information in a memory and displaying it according to a display control command. The third character information recording / reproducing apparatus includes a memory for storing a comparison table data of program numbers and character information, and a renumbering operation for reproducing, changing and recording the program number data in order from the start end side of the medium. In parallel with this, the character information for each program is played back and stored in the memory while recording all or part of the information stored in the memory in a predetermined area of the medium. The fourth character information recording / reproducing apparatus includes a main information output unit, and a system control unit for controlling to update.
A reproducing unit that reproduces main information and character information from the medium, a memory that stores comparison table data, and preferably a key input unit, a display unit that displays a program list including character information, and reproduced sub data. A system control unit for extracting comparison table data consisting of a program number, character information, and position information and preferably searching for a program designated by a key input unit, reproducing after the search, or reproducing the program is provided.

With the first configuration, the present invention records the main information input from the main information input / output unit on the medium by storing the character information from the character information input / output unit in the head portion (first section) of the main information program in a specific track. The sub-data including the main information and the character information is recorded on the same recording medium by the recording means while the system control unit controls the recording so that the sub-data is recorded only in one area.
During reproduction, the main information and the character information are reproduced and displayed by the reproducing means under the control of the system control unit.

According to the second configuration, the identification code detecting means detects the identification code indicating the relationship between the recording position of the character information and the recording position of the main information, and identifies the detected character information under the control of the system controller. In accordance with the code, the first display mode in which the reproduced character information is immediately displayed and the second display mode in which the reproduced character information is stored in the memory and displayed according to the display control command are switched.

Next, according to the third configuration, under the control of the system controller, the program number data is stored in the memory while being reproduced in association with the operation of sequentially renumbering the program number data from the start side of the medium. Then, all or part of the information stored in the memory is recorded and updated in the second specific area of the medium by the recording means.

Finally, according to the fourth configuration, under the control of the system control unit, the reproduction means reproduces the second specific area of the medium, and the comparison table data including the program number, the character information, and the position information from the sub-data. Is extracted, and the comparison table data is stored in the memory and a program list including character information is displayed on the display section. Preferably, when a specific program is designated by the key input section, the program is searched or reproduced after the search. Operates as if playing a program.

Embodiment A character information recording / reproducing apparatus according to an embodiment of the present invention will be described below with reference to the drawings.

FIG. 1 is a block diagram when the character information recording / reproducing apparatus of the present invention is applied to a DAT (digital audio tape recorder). In the figure, 80 is a head mechanism means,
10 is a head amplifier, 20 is a main data modulation / demodulation unit, 30 is a sub data modulation / demodulation unit, 40 is a system control unit, 50 is a text memory, 60 is a display unit, 61 is a character input setting unit key, 70 is a servo control unit 70, 90 is an AD / DA converter. The operation of the character information recording / reproducing apparatus configured as described above will be described below. The head mechanism means 80 includes a mechanism for driving a tape medium and a head mounted on a rotating cylinder.
A signal on the tape medium read by the head at the time of reproduction is amplified and equalized by a head amplifier 10, and a recording signal current is supplied to the head at the time of recording. The main data modulator / demodulator 20 deinterleaves the reproduced signal to decode the main information, that is, audio data, and also interleaves the input signal from the AD / DA converter 90, adds error correction code, and generates the main data recording signal RFMC. To get Further, the sub-data modulator / demodulator 30 encodes / decodes sub-information such as character information and time code information. The system control unit 40 controls the overall system operation of the character information recording / reproducing apparatus, receives sub-data from the sub-data modulation / demodulation unit 30 and displays it, and processes the input sub-data to process the sub-data modulation / demodulation unit.
Supply to 30. The sub-data recording signal RFSG generated by the sub-data modulator / demodulator 30 is supplied to the head amplifier 10 together with the main-data recording signal, and is recorded on the tape medium by the head of the head mechanism means 80. System control unit 40
Then, using the text memory 50, character information is temporarily stored and processed. The character information is displayed on the character display unit 60 under the control of the system control unit 40. Enter the text information to record,
The key 61 is used to select and change the processing flow.
A signal from the main data modulator / demodulator 20 is input / output to / from the main data analog output terminal by the AD / DA converter 90.

FIG. 2 is an internal block diagram of the sub data modulation / demodulation unit 30. In the figure, 31 is a 10-8 converter, 32 is a sub ID demodulator, and 33 is a Pack.
A demodulation unit, 34 is a pack data memory, 35 is a Pack modulation unit, 36 is a sub ID modulation unit, 37 is an 8-10 conversion unit, and 38 is a port.

8-10 modulated signal RFIN from head amplifier 10 to 10-8
The data is input to the conversion unit 31 and subjected to 10-8 conversion to obtain restored data.
This data is extracted by the sub ID demodulation unit 32 and the port is extracted.
It is supplied to the system control unit 40 through 38. The Pack demodulation unit 33 demodulates the Pack data from the output of the 10-8 conversion unit 31. The Pack demodulation unit 33 stores the Pack data in the Pack data memory 34.
Then, the error correction and the processing according to the contents are performed. The obtained result is supplied to the system control unit 40 via the port 38.

On the other hand, the recording process supplies the sub data from the system control unit 40 to the Pack modulation unit 35 and the sub ID modulation unit 36 via the port 38. The Pack modulator 35 uses the Pack data memory 34 to
Generates data error correction code and pack parity. The sub ID modulator 36 processes the ID part of the sub data,
The ck data and the ck data are supplied to the 8-10 converter 37, and the 8-10 converter is applied to output the recording signal RFSG to the head amplifier 10.

Next, FIG. 3 is an internal block diagram of the system control unit 40. In the figure, 41 is a port, 42 is an ALU, 43 is an accumulator, 4
4 is an instruction decoder, 45 is a program memory, 46 is a program counter, 47 is an internal register, 48 is a timer counter, and 49 is a port. The system control unit 40 is a microcomputer that exchanges external signal data via the input / output port and internally performs a logical operation to control the entire system. The software program for this purpose is made resident in the program memory 45.

The data recorded on the tape in the character information recording / reproducing apparatus configured as described above is as shown in FIG. FIG. 4 (a) shows the format of a track obliquely recorded on the tape. (B) shows a sub-area format of sub 1, (c) shows a sub-block format,
(D) is a diagram showing a Pack format in a sub-block.

Main information is recorded in the main area, and sub data is recorded in sub 1 and sub 2. Sub 1 and sub 2 have the same structure and each consist of 8 sub blocks.

The sub ID is defined as shown in Table 1. PNOID represents the program number as shown in Table 3, and BCD
You can express from 000 to 799 with 3 digits of code. Table 2 defines Control ID in the sub ID. In this Start ID
Makes continuous selection of the beginning of the program, that is, the beginning of the program for 9 seconds, easy to find the beginning of the selected song at the time of searching. Also, by subrecording the sub data such as the program number only in this area, the sub data after The record (hereinafter referred to as dubbing) can be done in a short time. When the program number is changed (hereinafter referred to as renumber) by editing the tape, it takes a long time for the renumber if the program number is recorded on the entire surface of the tape, but if it is recorded only for 9 seconds at the beginning of the track, only that is searched. You can easily post-record in a short time.

Table 4 is a Pack configuration table. For Pack, as shown in Table 4, the contents of Pack data are defined by Pack item. Table 5 is Pa
It is the allocation table of ck item, in which the program time,
Although the absolute time and the running time have been conventionally, the text character and the search character are according to this embodiment. For reference, Table 6 shows the definition allocation table for absolute time. The absolute time indicates the position in the longitudinal direction of the tape starting from the beginning end of the tape as a normal recording time. Since the contents do not need to be changed even after dubbing, the entire time is recorded on the tape. Table 7 shows the definition allocation table for text characters.
The code FMT represents a character code, and is assigned according to ASCCII, JIS, shift JIS, etc., for example. SORT represents the information content of a character. For example, song name, performer, singer, lyrics, liner note, recording memo, private message, reading a book on tape, bilingual translation, other score or accompaniment code or This is for identifying various types of information such as files of a word processor. SORT address starts from 00 when one SORT is written several times in succession 01 to 10
This is for expressing a variable-length character string by repeating ~ 11-01-01-10-11 ... Table 8 is a character ID definition allocation table. Character ID is C TOC ID and character cue ID
And C TOC ID will be described later. The character cue ID is a collection of text strings collected at the Start ID position, or is it recorded?
This is a flag indicating whether or not the data is recorded in a distributed manner in accordance with the corresponding main data recording position.

The above sub-data is reproduced by the sub-data modulation / demodulation unit 30, and the system control unit 40 determines the contents and controls each operation, but the character information is temporarily recorded in the text memory 50 and displayed on the character display unit 60. . When the character queue ID = 0, the reproduced character information is immediately displayed on the character display unit 60.

Figure 5 shows the character information and Start when the character queue ID is 0.
It is a figure which shows timing of ID, main data, and a character display. In this way, in a medium such as a music tape that has already been recorded and is only allowed to be reproduced (hereinafter referred to as "pre-reco tape"), the position of the main information and the character information is deeply associated with each other during reproduction. It solves the second problem that the character information reproduction display can be performed in parallel with the main information.

When the character queue ID = 1, the text memory 50 can display the characters on the character display unit 60 at an appropriate interval by the sequence control of the system control unit 40. FIG. 6 is a diagram showing the character information and Start ID, the main data and the timing of character display when the character cue ID = 1. Titles etc. will be displayed immediately, and explanations etc. will be displayed as the main data program progresses. When the display area of the character input setting unit 610 is small, the content may be selected by scrolling or by using a display mode changeover switch or the like. The reason why the character information is written only in the Start ID section is that the Start ID section is updated and new information is written at the same time when the sub data other than the character information is post-recorded as described above. This is so that the character information can be updated. Since this is done, the first problem is solved without the inconvenience that unnecessary character information is not erased and remains on the tape during post-recording.

The search character in Table 5 is defined as a character to be recorded in advance on the tape in order to realize a function of inputting and setting a character and searching for a program in which the character exists. Table 9 is a definition allocation table of Pack item = 1010 search characters, and Table 10 is a definition allocation table of SC ID. DAT
Has a high search function, but this is usually because the tape speed is low, so the search speed is relatively high, and data for searches that can be read intermittently by the head (for example, Start ID, PNO I
D) is continuously recorded for 9 seconds in the longitudinal direction on the tape. 2
This is because even a 00-times speed search can be sufficiently read. In order to be able to operate the character search at 200 times, continuous recording for 9 seconds is required like these search data. As shown in Table 5, in order to match the Start ID section for this 9 seconds and to record the text character in this section as well,
Pack items are assigned to each independently so that both data can be written in one track. FIG. 7 is a diagram showing an example of recording positions when a text character and a search character are simultaneously recorded in the areas of Pack1 and Pack2 on the pre-recording tape. In this way, at least 7 packs can be recorded in one track.
Since ck items can be written in 7 ways, sub data other than character information can be recorded in parallel. If more types of sub data recording are required, Pa for each sub block
Up to 56 sub data can be recorded in one track by changing the ck item.

By the way, there are only 16 types of Pack item that can be represented by 4 bits, but as shown in Table 5, the Pack ite is reserved.
By using m (eg 0000 or 1110) as an extension Pack item and defining the lower 4 bits as an extension, one Pack i
tem can be expanded to 16 sub-pack items. As another method, there is also a method of allocating several types of Data IDs among the sub IDs in Table 1 (currently 0000 is assigned to audio use and the others are reserved) for audio. In this way, for example, when Data ID = 0001, Pack
By redefining the item and making it independent of the Pack item when Data ID = 0000, you can increase the Pack item by 16.

Next, a method of recording character information in the second specific area on the leading end side of the tape and an apparatus therefor in conjunction with the renumbering operation in one embodiment of the present invention will be described with reference to FIG. FIG. 8 is a part of a flowchart for the system control unit 40 to control the series of operations described above.

A renumber is the result of additional recording, overwriting, joint recording, and insert editing of recordable tape media.
When the program numbers attached to the main information are discontinuous, the sub data area is post-recorded and the program numbers are reassigned in ascending order. As shown in Tables 1 and 3, the program number is the PNO ID in the sub ID. PN
"OAA" indicates that O ID writes valid data only when Start ID = 1, and invalid when Start ID = 0.
Since it is written, only the Start ID = 1 section needs to be renumbered.

Therefore, in the flow of the system control unit 40, the tape is first rewound (process 81), the Start ID is sequentially searched from the tape start end, the sub data is reproduced and saved in the memory (process 82).
At the same time, it rewinds to the beginning of the Start ID section (process 83), newly ascends the PNO ID and the saved sub data after dubbing (process 84), and at the same time stores the PNO ID, character information, and absolute time in the text memory 50. Store (Process 8)
Five). Here, it is judged whether it is the final program number (judgment 86), and if it is not the final one, the process returns to the process 82, and if it is the final, the text memory 50 stores the program location of the entire tape and the list data of the character information. Will be. The renumbering operation is completed, and then the recording operation of the second specific area, that is, the TOC area of the tape medium is started.

The TOC area is an area for recording a list of tape positions for all programs. The definition of the TOC area is different between pre-recorded tape and recordable user tape.
Since the C area must be updated each time, the TOC area is defined as a specific area starting in the Start ID = 1 section of the first program on the tape start side. This is done in consideration of the tape compatibility between the device that can read and write the TOC area and the device that cannot read and write it. The goal is to make the TOC area invalid. Since the TOC area is located on the tape start side in this way, the tape is returned after the renumbering is completed (Process 87), and the program location and character information table data for the entire tape stored in the text memory 50 (hereinafter, TOC data with characters) While reading), and dubbing into the TOC area (process 88).

How to record textual information in the TOC area
The first way to define a pack item and the traditional TOC Pack i
There is a second method for expanding and defining the POINT data of tem.

The first method for defining the character information TOC Pack item is to allocate 1011 as the character information TOC Pack item and record in parallel at the tape position as shown in FIG. 9 using the physical areas of Pack3 and Pack4, for example. . The first method is to add new text information without changing the U-TOC in the conventional TOC area diagram.
Since the TOC Pack item is assigned, it is possible to increase the amount of information in the TOC area, but on the other hand, it will occupy a large amount of Pack item, narrowing the possibility of future development.

In the second method, the definition of the conventional TOC Pack item is extended as shown in Table 11. Table 11 is a definition assignment table for Pack item = 0100 TOC. The contents of PC4 to PC7 change depending on the POINT. Table 12 shows the correspondence between POINT and the contents of PC4 to PC7, and POINT = CA and CB are newly extended POINT data. Table 13 and Table 14 are expanded POINT = CA and POINT =
This is a detailed definition of CB. In Table 13
PNO1, 2, 3 and index are data specifying the program number, and the format and type of character information are represented by the codes FMT and SORT. The character length is data representing the length of the character string with the same content, and the length of the character string can be known in advance during reproduction. In other words, POINT = CA Pack and POINT = CB
Packs are used in combination, and character information is composed of bytes for 4 characters as shown in Table 14. POINT = CB packs are connected as many as the character length. Kanji requires 2 bytes, so it consists of 2 characters. In this way, POINT for each character information content
= Set a set of CA's Pack and POINT = CB's Pack. After the character information of one program number is recorded, the next program number is similarly recorded, and the character information of all program numbers is recorded.

FIG. 10 shows a user tape of the second method described above.
It is a figure showing the recording position of TOC Pack. U-TOC in the figure is T
It is the recording position of OC Pack, of which PNO location data is the same as the conventional TOC Pack data, and PNO text data records character information.

In this way, the third problem is solved by updating the TOC data with text in a short time in synchronization with the renumbering.

Since the pre-recorded tape is not additionally recorded and does not need to be changed, the TOC area including the character information is repeatedly recorded over and over the entire surface of the tape. This is done by the supplier of pre-recorded tape. When inserting the pre-recording tape into the playback device and playing it back, TOC data can be played back immediately at any tape position, which is very convenient.

The system control unit of the character information recording / reproducing apparatus of the present invention for applying the TOC data with characters recorded in this way
40 preferably performs the following operations. In the case of the pre-recording tape, the TOC data can be immediately reproduced at any tape position as described above, so the TOC data with characters is stored in the text memory 50. In the case of a user tape, play the nearest Start ID section and search for Pack item = 1000 text character string or Pack item = 1010 search character and read the C TOC ID or SC ID in it. Both of them are in agreement, and 1 indicates that the TOC data with text has been registered in the TOC area, and 0 indicates that the TOC data with text is not registered in the TOC area. Therefore, determine this and if there is TOC data with characters, rewind the tape and read the TOC area. After that, the TOC data with characters is stored in the text memory 5 as in the case of pre-recorded tape.
Store to 0. TOC data with characters is temporarily stored in text memory
After being stored in 50, the display unit 60 is displayed via the system control unit 40.
Display to.

FIG. 11 a is an example of displaying TOC data with characters on the display unit 60. In this example, PNO, location, song title and performer's name are displayed for each program number. 11th
FIG. B is a part of the key 61. For example, the display of the program instructed by using the cursor function of the key 61 and the display unit 60 is reversed. The system control unit 40 pulls out the location of the instructed program from the text memory 50 and performs a search, or controls the reproduction after the search or the program reproduction. A program number may be designated instead of the cursor function.

In this way, the character information recording / reproducing apparatus which can easily operate the program search and the program reproduction by moving the cursor of the display unit and designating the number is provided, and the fourth technical problem is solved.

The text memory 50 is divided into areas so that it operates as a buffer memory for character information and also as a storage memory for character-added TOC data as described above, but these may be divided into two memory means. Needless to say.

Effects of the Invention As described above, the present invention includes the system control unit that controls so that the character information is written only in the Start ID section. Therefore, even in the renumber for post-recording sub data other than the character information, the Start ID section is Since it is possible to update the text information at the same time as the new information is updated and written, there is no inconvenience that unnecessary text information is not erased and remains on the tape during dubbing. A character information recording / reproducing device having a function can be provided.

In addition, in the case of a recorded medium such as a music tape that has been identified for reproduction only (hereinafter referred to as "pre-reco tape"), the system control unit determines this and deeply correlates the positions of the main information and the character information. Then, it becomes possible to display the character information during reproduction in parallel with the main information. In the case of a user tape, the character memory 60 can be displayed at an appropriate interval by the sequence control of the system controller 40 from the text memory 50. It becomes possible to display.

Next, the system control unit manages the memory to store the comparison table data of the program number and the character information while reproducing the character information of each program in conjunction with the renumber, and all or part of the information stored in the memory. Is controlled to be recorded or updated in the second area of the medium, so that the TOC data with characters can be updated in a short period of time in conjunction with the renumber, which is convenient and does not require special operations. A high character information recording / reproducing apparatus can be provided.

Further, according to the present invention, the main information output means, the reproduction means for reproducing the main information and the character information from the medium, the memory for storing the comparison table data, and the key input section, the program specified by the key input section Since the system control section for performing the search, the reproduction after the search, or the program reproduction is provided, the second specific area of the medium is reproduced by the reproducing means under the control of the system control section, and the program number is selected from the sub data. The comparison table data consisting of the character information and the position information is extracted, the comparison table data is stored in the memory, the program list including the character information is displayed on the display section, and a specific program is preferably specified by the key input section. Then, it becomes possible to search for a program, to play after the search, or to operate so as to perform program playback. Therefore, it is possible to significantly simplify the operations of program search and program reproduction by moving the cursor on the display unit and designating the number, and it is possible to exert the effect that the character information recording / reproducing apparatus having a novel function with high convenience can be provided. it can.

[Brief description of drawings]

FIG. 1 is a block diagram when the character information recording / reproducing apparatus of the present invention is applied to a DAT (digital audio tape recorder), and FIG. 2 is an inside of a sub-data modulator / demodulator 30 of the character information recording / reproducing apparatus of the present invention. FIG. 3 is a block diagram, FIG. 3 is an internal block diagram of the system controller 40 of the character information recording / reproducing apparatus of the present invention, FIG. 4 is a diagram showing the physical structure and logical hierarchy of data recorded on the tape, and FIG. Queue ID = 0
Fig. 6 is a diagram showing the character information and Start ID, the main data and the timing of the character display in the case of Fig. 6, Fig. 6 is a diagram showing the character information and the Start ID, the timing of the main data and the character display in the case of the character queue ID = Figure 7 shows the pre-recorded tape with a text character and a search character in Pack 1 respectively.
And FIG. 8 is a diagram showing an example of a recording position when recorded simultaneously in the area of Pack2, FIG. 8 is a diagram showing a part of a flowchart of the system control unit 40 of the character information recording / reproducing apparatus of the present invention, and FIG. 9 is character information. Figure 10 shows an example of parallel recording using the physical areas of Pack3 and Pack4 when 1011 is assigned as the TOC Pack item.
TO of user tape by way of defining OINT data by extension
FIG. 11 is a diagram showing the recording position of the C Pack, and FIG. 11 is a diagram showing an example of displaying TOC data with characters on the display unit 60 of the character information recording / reproducing apparatus of the present invention and a part of the key 61. 10: Head amplifier, 20: Main data modulator / demodulator, 30
...... Sub data modulator / demodulator, 40 ...... System controller, 50 ...
… Text memory, 60 …… Display, 61 …… Key, 70 ……
Servo control unit, 80 ... Head mechanism means, 90 ... AD
・ DA converter.

 ─────────────────────────────────────────────────── ─── Continued Front Page (72) Inventor Yojiro Fukushima 1006 Kadoma, Kadoma City, Osaka Prefecture Matsushita Electric Industrial Co., Ltd. (56) Reference JP-A-63-164585 (JP, A) JP-A-61- 117987 (JP, A)

Claims (5)

(57) [Claims] 1. The main information is recorded in the main area, and
Recording means for recording sub-data including character information in a sub-area distant from the main area, and recording of the main area and sub-area for an amount corresponding to the time length of the program, and in the sub-area, the first predetermined area of the program is recorded. A character information recording / reproducing apparatus comprising a system control unit for recording character information only during a period. 2. An identification code detecting means for detecting an identification code of character information recorded as a part of sub-data, which is given according to the relationship between the recording position of the character information and the recording position of the main information, and the detected character. A system control unit for switching between a first display mode for immediately displaying the reproduced character information and a second display mode for storing the reproduced character information in a memory and displaying it according to a display control command based on the identification code of the information. Characteristic information recording / reproducing apparatus. 3. A memory for storing comparison table data of a program number and character information, wherein the system control section reproduces and changes the program number data indicating the program number of the main information contained in the sub data in order from the start side of the medium. While controlling the renumbering operation to be recorded and reproducing the character information accompanying the program in synchronization with the renumbering operation, the comparison table data is stored in the memory in association with the program number and stored in the memory. 2. The character information recording / reproducing apparatus according to claim 1, wherein all or part of the information is controlled to be recorded or updated in a predetermined area of the medium. 4. An output means for outputting main information, a reproducing means for reproducing sub-data containing main information and character information from a medium, and a program number, character information and position information from the reproduced sub-data. A character information recording / reproducing apparatus comprising: a system control unit for extracting table data, a memory for storing comparison table data, and a display unit for displaying a program list including character information. 5. A key input section for moving a cursor on a display section or inputting a program number, and searching for a program designated by the system control section or the key input section or reproducing after the search or controlling the program reproduction. The character information recording / reproducing apparatus according to claim 4, wherein