JP3296336B2 - Information arrangement method of CD - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to information on a CD in which new Q subcode data for displaying character information relating to music contents (track contents) such as a music title, a composer name, and a performer name are arranged. Regarding the arrangement method, this is realized by adding a small amount of information to the data format of the current CD.

[0002]

2. Description of the Related Art In a CD reproducing apparatus, various displays based on disc reproduction information are performed for convenience in use. The display based on the disk reproduction information in the conventional CD reproducing apparatus is performed by using TNO (track number, song number), TI recorded in the Q channel subcode as mode 1.
In some cases, ME (time) and the like are reproduced and displayed. Another display method is a display using CD graphics. In this method, line graphic information is recorded using the R to W channels of the subcode, and lyrics and still images using character fonts are displayed.

[0003]

In the display using the Q channel subcode in the mode 1, only the song number and the time information are displayed, and the song title, composer, performer, or the like that the user really wants to know is displayed. There was no function to display data on the contents (track contents) . In addition, the display by the CD graphic requires an external device such as a television monitor as a display device, and the display on the main body of the CD reproduction device is basically impossible. In addition, since an area that is not normally used, that is, the R to W channel subcode, is used, it is necessary to incorporate a new LSI into this processing, and there is a disadvantage that hardware cost is high. Also, since the data is not code data but graphic data, it cannot be used for data retrieval (such as searching for a song). Also, the creation of graphic data was almost manual, and the creation of software was extremely time-consuming. For this reason, CD graphics have not been very popular. The present invention solves the drawbacks of the above-described conventional technology, and provides a music title (track title, composer, performer, etc.)
Simply by adding a small amount of information displayed on the content) to the data format of the current CD was realized at a low cost CD
It is intended to provide a method of arranging information.

[0004]

According to the present invention, there is provided a method for arranging information on a CD, comprising: an ASC representing the contents of a track corresponding to a subcode Q channel data frame in a program area, at most eight frames per 100 frames;
The character code information and the edit information of the II or JIS kanji code are newly added to the subcode Q channel address 4 bits that do not correspond to the already defined modes 1 to 3.
This is recorded together with the identification code according to the defined mode . CD recorded by the information arrangement method of the present invention
Is a reproduction output means for detecting and reproducing and outputting digital audio data recorded on the CD, and detecting Q channel information of the subcode data recorded on the CD in parallel with the reproduction by the reproduction output means. Q channel information detecting means to be output, and specific information consisting of a character code relating to the content of a corresponding track from the output of the Q channel information detecting means, identified by an identification code assigned to the specific information and output. Identification means, information dividing means for dividing the identified specific information into character code information and editing information, and editing the character code information obtained by the information dividing means as a character code string which can be externally displayed by the editing information And a CD reproducing apparatus having a character display circuit comprising a character code string output means for outputting to a display means. Ri, it is possible to display information representative of the contents of a track. That is, in the CD reproduction signal, the Q channel information is detected by the Q channel information detecting means,
Specific information relating to the track content is identified by using an identification code from the specific information identifying means, and the specific information is further divided into a character code and edit information by the information dividing means,
The character code string output means edits and outputs the character code information as a character code string that can be displayed externally by the editing information,
It is displayed on the display means. As the character code information, various kinds of information relating to song contents (track contents) such as a disc title (total title of the disc), a song title (title of each song), a composer name, a player name, and the like are used.

[0005] According to this, it is possible to display information on the contents of the track that the user wants to know in parallel with the reproduction of the track . In addition, since recording, reproduction and display are performed using the Q subcode, it can be dealt with only by adding a small amount of data to the current standard, and the circuit configuration for character display is much more expensive than the conventional device. It can be realized without becoming. Also, since information on the track contents is recorded as a code, the display can basically be a line display such as an LCD or an LED, so that the display can be provided in the main body of the reproducing apparatus, and the display of the conventional CD graphics can be performed. As described above, the display can be performed without a TV monitor. In addition, since it is recorded as a code, it can be used for data search or the like, which is more user-friendly. In addition, the character pattern can be determined by software of the reproducing apparatus, and it is only necessary to record a code on a CD. Therefore, it is easier to create recording information than a CD graphic. Furthermore, since the recording is performed by using the Q channel subcode which is always inserted in the CD format, the total data amount becomes necessary and sufficient, and since the data is edited with the editing information, the data efficiency is improved, and the instant data transmission is performed. The amount is small. Further, according to the present invention, tiger
Since the information about the click content and records assigned to up to eight with 100 per many of the Q channel data frame, the track number by the mode 1 of the conventional standard (track number)
And display of time information can be performed without any trouble.
Since ASCII or JIS kanji codes are used as character codes, efficient recording can be performed. Also, since only a small amount of information is added to the current standard, the production of CD software can be used as it is, so that it is very easy to realize.

[0006]

DESCRIPTION OF THE PREFERRED EMBODIMENTS According to the information arrangement method of the present invention,
FIG. 2 shows an embodiment of the data format of the recorded CD. In this data format, as shown in (a), one frame is composed of 588 channel bits, and each frame has a subcode area of one symbol (8 bits). The subcode is configured to be completed in 98 frames, and as shown in (b), eight channels P, Q,
.., W. The Q channel is configured as shown in (c), and the mode is specified by ADR (address). Mode 1 (ADR = 0001) to Mode 3
(0011) is already defined, here mode 5
(0101) is recorded by the information arrangement method of the present invention.
Is newly defined as a character display mode using the extracted CD . If the appearance rate of the mode 5 is at most 8/100 or less, the reproduction of the predefined modes 1 to 3 can be performed without any trouble.

The contents of the data block (72 bits) in mode 5 are shown in (d) to (f). The mode 5 data signal (specific information) is composed of three types of data blocks shown in (d) to (f). This is categorized according to the first two bits (CD) as follows. DC: Data Content (displays the contents of the recorded block) 00: Control Block (CB: Control Block,
Editing information) Indicates that the corresponding data block is composed of control data for displaying characters. 01: Basic character block (BC: Basic Character Bloc
k, character code information (ASCII)) The corresponding data block is an 8-bit AS as a reference character
Indicates that it is composed of CII alphanumeric character codes. 11: Optional character block (OC: Optional Cha)
racter Block, character code information (JIS Kanji etc.) Indicates that the corresponding data block is composed of a 16-bit JIS Kanji code as an optional character.

[0008] The data format of the various data blocks will be described. Data format in control block CB (Fig. 2 (d)) i) TBN: Total Block Number (4 bits) Character block that constitutes one character line (1 block is 8 characters for standard character, 4 characters for optional block) (Control blocks are not counted). ii) RN: Repeat Number (2 bits) Indicates whether the data is the first data or the second data of data written twice to prevent a reading error. 01: First data 10: Second data

Iii) TNO: Track Number (8 bits) This indicates the music number to which the music content to be displayed belongs, and only this data is composed of a BCD code. Although basically the same as the TNO of mode 1, if the track number information of the next song is inserted before the end of the previous song as described later, the TNO in mode 1 and the TNO in mode 5 are used in principle. The music number display is started from the time when the TNOs match. 0000 0000: The character line on which the TNO is recorded is data that is common to the entire disc, such as the disc title and the name of the singer, and represents data that can be displayed at any time. 0000 0001: Data corresponding to the track number of the 1st track:: 1001 1001: Data corresponding to the track number of the 99th track 1111 1111: At the request of the software, the data is read by the player, and at the same time, the characters are read in real time. If you want to display (for example, karaoke lyrics), do this.

Iv) TLNO: Total Line Number (12 bits) v) CC: Character Code (6 bits) Decoding code for optional characters (kanji) 00 0000: Consists of only reference character blocks, and no optional characters are recorded. 00 0001: Kanji is recorded as an optional character. 00 0010 to 11 1111: There is an undecided word, but depending on the character code to be set, a character in the same 8-bit unit as the reference character block can be considered (for example, hiragana, katakana).

Vi) SC: Select code (4 bits) This is a classification code representing the data content of the corresponding character line. vii) BTCN: Basic Total Character Number (6 bits) Indicates the number of characters included in the character line of the basic character (reference character line). By using this, it is possible to control the display on the display device in a well-balanced manner.

Viii) BLCN: Basic Line Change Nu
mber (6 bits) In the reference character line, by specifying an appropriate character position when changing lines in the corresponding character line, represents the position of the head of a character that can be changed from the first character. By using this, even if the number of digits of the display device on the playback device side is smaller than the number of displayable characters in one line, the display can be performed in a well-balanced manner, and the degree of freedom of selecting the grade of the display device of the playback device is increased. ix) OTCN: Optional total Character Number
(5 bits) Indicates the number of characters included in the character line of the optional character (optional character line). x) OLCN: Optional Line Change Number (5 bits) Specify the appropriate character position when changing lines in the corresponding character line in optional characters. Specify the position of the beginning of the character that can be changed from the first character. Express.

Data Format in Reference Character Block BC (FIG. 2E) i) BN: Block Number (4 bits) Indicates the order (position) of the block in one character line. This order does not include control blocks. Data written twice is counted as one ii) RN: Repeat Number (2 bits) (same as control block) iii) d1 to d8: 8-bit alphanumeric character data by ASCII code 0000 0000: Alphanumeric character by ASCII code:: 1111 1110: By ASCII code Alphanumeric characters 1111 1111: Non-operation. The part where this symbol is recorded does not display characters, but simply stands by. Unlike the space display, when the next data comes, it is displayed by filling the previous character. It does not count as the number of characters. Use: Adjustment data when the number of characters in one line cannot be divided by the number of blocks. Display timing for displaying characters at real timing.

Data format in optional character block OC (FIG. 2 (f)) i) BN: Block Number (4 bits) (same as reference character block) ii) RN: Repeat Number (2 bits) (same as reference character block) Iii) D1 to D4: Kanji data of JIS code consisting of 16 bits 0000 0000 0000 0000: JIS kanji code:: 1111 1111 1111 1110: JIS kanji code 1111 1111 1111 1111: Works the same as non-operation in the reference character block . In the character display of mode 5, the reference character block is always recorded so that at least alphanumeric characters can be displayed even on a low-cost machine. Recording of optional characters is optional. Thereby, display according to the grade of the playback device can be performed.

By configuring each data block as described above, the following effects can be obtained. (A) Modification of the current standard is minimal. Since it is only necessary to add a new mode 5 to the Q subcode, compatibility with the current standard is complete, and discs recorded by the information arrangement method of the new standard can be used. There is no problem if it is played back with a conventional CD player. Also CD
Since the recording is performed by using the Q channel subcode which is always inserted in the format, the total data amount is necessary and sufficient, and the item items at the time of display, for example, the display characters such as "composer" are displayed for each. If the data is recorded in JIS kanji code, 16 × 3 = 48 bits are always required alone, but only 4 bits of “0010” are required as the edit information SC in the control data, so that the overall data efficiency is good. Thus, an effective display can be performed with a minimum transmission data amount, the transmission can be basically performed without increasing the transmission speed, and the current standard can be used as it is. (B) New parts (LSI) to meet new standards
No development is required. The LSI for signal processing can comply with the new standard by only changing a part of the software from the conventional LSI.
At present, there are standard display-related LSIs, which can be used. Therefore, the cost burden is small, so that it can be equipped on a CD boombox or the like. (C) The degree of freedom of display on the CD player is large. The number of dots of display characters, the number of display lines, and the number of characters in one line can be freely selected according to the type of product. Therefore, the display according to the grade of the product can be performed from a CD boombox to a high-end machine. By storing the data once read, it can be used for various functions such as data search. (D) Classification code (SC in control block:
The user can select data to be displayed on the player side by designating (Select Code) by key input. (E) Software can be easily manufactured. Since the character pattern can be set by software on the playback device side, the CD software only needs to write data automatically on the production line, and the recording cost is almost negligible.

Next, an embodiment of one character line data constituted by a combination of the above three types of data blocks is shown in FIGS. FIG. 3 shows a case where only reference characters are used, and FIG. 4 shows a case where optional characters are recorded. Each block in FIG. 3 and FIG. 4 is 72 bits, and the three types of data blocks (FIG. 2 (d),
(E) and (f)). A series of line data is configured by detecting and connecting data blocks (Q subcode data of mode 5) inserted into the subcode Q channel at an appearance rate of 8/100 or less. One line of data is provided with a control block at the beginning, followed by a character block. In each block, the same data is recorded several times (here, repeated twice) to prevent a reading error.

When the data for one line is completed, the SC in the control block is switched, and data of another content is subsequently recorded. When the SCs are sequentially switched and recording is completed, the same data is repeatedly recorded as long as the SC is returned to the beginning and the same music continues. Information common to the entire disc, such as a disc title and a singer, is also repeatedly recorded. Thus, an appropriate display can be performed even when the reproduction is started from the middle of the music. Even if a reading error occurs temporarily, correct display can be performed if correct information is reproduced thereafter. Further, since the data is always received during the music performance, the total data amount becomes necessary and sufficient, and since the data is edited with the editing information, the data efficiency is improved, and the instantaneous data transmission amount is small.

In the case where only the reference character shown in FIG. 3 is used, a reference character block is arranged following the head control block. The control block in the case of FIG. 3 is as follows: TBN = 0100 (composed of 4 blocks per line) CC = 00 0000 (composed of only the reference block) BTCN = 10 0000 (composed of 32 characters to constitute the reference character line) OTCN = 0 0000 ( There is no option character). If one line is set to 15 blocks (the maximum value of the TBN is 1111), when only the reference characters are used, 8 characters (the number of characters in one block) × 15 blocks = 1
20 characters.

When the optional characters shown in FIG. 4 are recorded, a reference character block and an optional character block are arranged alternately after the head control block. The control block in the case of FIG. 4 is as follows: TBN = 0110 (constitutes 6 blocks per line) CC = 00 0001 (records optional characters) BTCN = 01 1000 (constitutes a reference character line with 24 characters) OTCN = 0 1100 (12 (An optional character line is composed of characters.) (Note that it may be more convenient for the TBN in the control block to separately count the reference character block number and the optional character block number.) As shown in FIG. 4, when the optional characters are recorded, the reference characters are always recorded together, so that even a low-cost machine having a display device that cannot display kanji can display at least alphanumeric characters. . Also, in the case where kanji display can be performed, it is convenient if the user can switch the display to either one or both displays on the playback device side.
In addition, one line has 15 blocks (the maximum value of TBN is 11 blocks).
If set to 11), in the case of optional characters such as kanji composed of 16 bits, 4 characters × 15 blocks =
Up to 60 can be recorded.

The display speed in the case of FIGS. 3 and 4 is, for example, as follows. Subcode block playback speed:
Appearance rate of Q subcode in 75 blocks / sec mode 5: 5
/ 100 Number of character codes: (Kanji) 4 characters / block (English characters, Kana) 8 characters / block Number of characters that can be recorded: (Kanji) 75 × 5/100 × 4 = 15 characters / second (English characters, Kana ) 75 × 5/100 × 8 = 30 characters / sec Displayable character amount: (Kanji) 15/2 = 7.5 sentences (in the case of writing twice) characters / sec (English characters, Kana) 30/2 = 15 characters / second

At such a display speed, it takes time until the reproduction of one line data is completed. Therefore, it may take a long time from the start of the music until the contents are displayed. This problem can be solved by increasing the data transmission rate, but a huge transmission capacity is required for that purpose, resulting in a loss and impractical. Therefore, before the start of the next song (before the end of the previous song), the character code information and the song number data (TNO) of the next song are recorded in the Q subcode of mode 5, and the next song starts. By causing the character code information of the music to be reproduced and stored before, and displaying the stored data when the TNO of mode 1 matches the TNO of mode 5, the low-speed data is displayed. But it can be displayed at high speed.

The error check at the time of reproduction is performed by the CRC
In addition to using the check code (FIG. 2 (c)), it is detected whether the same data can be obtained twice,
Display using only correct data. Such a double check can prevent an abnormal display from occurring. It should be noted that the Q subcode data of mode 5 can be recorded in a song or collectively recorded in a lead-in section. In this way, all the music contents can be displayed immediately after the disc is mounted. When the lead-in area is narrow, it is possible to record the minimum data such as the song title of each station number.

Next , recording is performed by the information arranging method of the present invention.
A configuration example of a CD playback apparatus for reproducing been CD will be described. FIG. 5 shows the entire configuration of the CD reproducing apparatus. In FIG. 5, an optical pickup 10 irradiates a compact disk 12 with a laser beam and receives the reflected light. The light receiving signal is input to the focus error detection circuit 16 via the preamplifier 14, and a focus error is detected. The focus error signal is supplied to a focus actuator in the optical pickup 10 via the phase correction circuit 18 and the drive amplifier 20, and focus adjustment is performed by focus servo. The tracking error signal is supplied to a tracking actuator in the optical pickup 10 via a preamplifier 22, a phase correction circuit 24, and a drive amplifier 26, and tracking control is performed by a tracking servo. Further, the tracking error signal is supplied to a feed motor 32 via a phase correction circuit 28 and a drive amplifier 30, and feed control is performed by a feed servo.

A recording signal (HF signal) of the disk 12 detected by the optical pickup 10 is input to a digital IC 36 via an HF amplifier 34. Digital IC3
6, a HF signal is shaped by a digitizing circuit 38 in order to perform digital processing, and then a clock reproducing circuit 40
Is compared with the reference frequency from the VCO. The comparison output is output from the CLV servo circuit 44 and the drive amplifier 46.
To control the disk motor 48 to control the disk 12 at a constant linear velocity. The servo sequence controller 50 performs sequence control of a focus servo, a tracking servo, a feed servo, and a disk rotation servo. The disc reproduction signal is subjected to EFM demodulation by the EFM demodulation circuit 52, then temporarily stored in the RAM 54, subjected to C1 and C2 error correction by the error correction circuit 56, and sequentially read by the RAM control timing control circuit 58 at an accurate cycle. The read data is output after data interpolation and muting are performed by the data interpolation and muding circuit 60 as necessary. Then, after being converted into an analog signal by the D / A converter 64, the signal is divided into left and right channel signals by the sample and hold circuits 66 and 68, and output through the low-pass filters 70 and 72 and the amplifiers 74 and 76. It is output to terminals 78 and 80.

The sync separation circuit 82 separates the sync signal from the disc playback signal, and the subcode demodulation circuit 84 demodulates the subcode from the disc playback signal. Control circuit 86
Controls the respective units based on the operation of the operation keys 88 and the remote controller 96 by the user, and displays information based on the demodulated subcode on the display unit 90. Further, a loading motor 94 is driven via a drive amplifier 92 to control the loading of the disc tray. The remote control 96 forms a bidirectional remote control with the playback apparatus main body. An operation key 98 is provided on the remote control 96, and a command signal based on the operation is output from the remote control transmission / reception unit 100 and transmitted from the infrared light emitting unit 102. The main body of the reproducing apparatus is provided with an infrared light receiving section 104 for receiving an infrared signal emitted from the remote controller 96 and transmitting the received light signal to the remote control transmitting / receiving section 1.
It supplies to the control circuit 86 via 06 to execute the commanded function. The display information reproduced by the reproducing apparatus is output from the remote control transmitting / receiving section 106 and transmitted from the infrared light projecting section 108. This infrared signal is received by the infrared light receiving section 110 of the remote control 96 and displayed on the display 112 via the remote control transmitting / receiving section 100. The non-volatile RAM 93 stores display information based on the Q channel subcodes of mode 1 and mode 5 reproduced from the compact disk 12 and reads the information based on a command operation using the operation keys 88 of the main body of the reproducing apparatus or the operation keys 98 of the remote control 96. It is output and used for searching / displaying the reproduction position on the disc.

Here, according to the information arrangement method of the present invention,
FIG. 1 shows an example of the configuration of a character display circuit provided in a main body of a reproducing apparatus for reproducing a recorded CD. The function of this character display circuit is shown in FIG.
6 and so on. In the character display circuit 18, the digital audio data reproduced from the CD is subjected to demodulation of an audio signal by reproduction output means 120 (corresponding to the portion after the EFM demodulation circuit 52 in FIG. 5). The digital audio data is stored in the subcode channel identification means 12.
2 (corresponding to the sub-code demodulation circuit 84 in FIG. 5) detects the sub-code and identifies it as a P-channel sub-code, a Q-channel sub-code or the like. The Q channel data processing circuit 124 demodulates the Q channel subcodes of the modes 1 to 3 to obtain the track number information TNO and the time information TIME, and displays them on the display (the display 90 or a display provided separately therefrom). Display) at a predetermined position.

The specific information identifying means 126, information of the present invention
The Q channel subcode of mode 5 according to the report arrangement method is identified by the identification information (ADR = 0101, see FIG. 2C) and output. The information dividing means 128 converts the Q channel subcode of mode 5 into a DC code (FIG.
(See (f)), character code information (reference character block data, optional character block data) and edit information (control block data). These pieces of information are stored in the nonvolatile RAM 93. In addition, it is output so that it can be displayed on an external device (such as a TV monitor). Optional character information of character code information is JI
It is composed of S Kanji code, and the reference character information is ASCI
I code, and each character code decoder 13
By 0, it is decoded into display data of a character pattern corresponding to the code. And character code string output means 1
32 edits and outputs the decoded display data as a character code string that can be displayed externally by the editing information. The character code string data is supplied to the display unit 90 via the display drive unit 134 to display information on the music contents. The display 90 is constituted by a line display such as an LCD or an LED and the like by dot display, and can basically be displayed by a display which displays one line. Depending on the grade of the CD player, multi-line display is possible. Further, it is also possible to display a TV screen using a small liquid crystal or the like in the main body of the reproducing apparatus. Information distribution of the present invention
The character display circuit that displays characters using the CD recorded by the replacement method basically uses the conventional system as it is, except for the JIS kanji decoder, and uses software for processing the Q subcode in mode 5. It can be handled by adding.

An example of a character display operation by the character display circuit 118 in FIG. 1 will be described. In a normal playback state, C
From the data reproduced from D, an audio signal is reproduced by the reproduction output means 120. In parallel with this, the P-channel subcode and the Q
A channel subcode is identified. The Q channel subcode in mode 1 is the Q channel data processing circuit 124
, Demodulates the song number and time information, and displays the demodulated information on the display device 90 or a display device provided separately therefrom. The mode 5 Q channel subcode is identified by the specific information identifying means 126, and is divided into character code information and edit information by the information dividing means 128. The character code information is decoded by the character code decoder 130, and the character code string output means is provided. At 132, they are arranged in a character code string corresponding to the editing information, and are displayed on the display device 90 via the display drive unit 134 as they are. The demodulated character code information and edit information are stored in the nonvolatile RAM 93. Mode 5 Q
In the subcode, the same character code is repeatedly recorded in one song, but the first obtained one is stored in the RAM 93, and the necessary character code is read out from the RAM 93 and displayed as long as the song continues thereafter. Alternatively, with respect to the second data, if only important data, for example, the title of the song obtained at the beginning is read and displayed again, the title may be continuously displayed thereafter. This is because it may be troublesome to repeatedly change and display the same content many times. And the song changes,
When the content of the character code changes, this new character code
This is stored in the AM 93 and displayed. The character code of the previous song is also left as it is in the RAM 93, and is used for subsequent display, song search, and the like. As described above, there are various types of display contents specified by the SC code, but they are displayed as they are in the order in which they are reproduced (the display is switched sequentially if the display unit 90 is small) and the operation keys 88 and 98 are used. S
By specifying the C code or the display content, the display content can be specified and displayed. Unless otherwise specified, the disc title and the song title (or only the song title) can be automatically displayed. Also,
When optional characters are recorded, it is convenient if one or both of the reference character and the optional character can be displayed by a key operation of the user.

When the reproduction of one CD is completed, the CD
Is stored in the RAM 93, and is stored even if the CD is subsequently removed from the playback device, and is used for searching for music when the CD is reproduced next time. In the next reproduction, the character code information is stored in the RAM 93.
, No new storage is performed. In order to prevent the RAM 93 from overflowing, it is convenient to make the data on the disk that is no longer needed erasable by a key operation of the user. As a method of storing the character code information in the RAM 93, for example, character code information of various contents is collectively provided for each song, and a classification code (SC) is assigned and stored (that is, collectively stored for each song). Can be. As another method, various character code information of each music piece can be stored separately for each classification code (SC) (that is, collectively stored for each classification code). The music number information (TNO) and the classification code (SC) can be represented by the addresses to be stored.

When playing back a CD in which character code information is already stored in the RAM 93, this stored information can be effectively used. For example, when a disc is inserted, the disc title (SC = 0000) is automatically reproduced to detect whether the same disc title is already stored. If already stored, the track number (T
The corresponding song title is read from the RAM 93 and displayed according to the designation of "NO" (that is, the operation of locating the song). When searching and displaying character code information by actually searching the position on the disc in response to the key operation, it takes time until the song title is displayed due to the low transmission rate. If the display is performed based on the information stored in the RAM 93, the corresponding song title can be displayed immediately after the key designation operation. In this way, once the mounted disc title is identified first, the rest is handled by specifying the track number or classification code by key operation (or by specifying a special key operation provided for the displayed content) Can be displayed immediately. As a specific processing method for reading the character code information from the RAM 93, when various pieces of information are collectively stored for each song,
A music number corresponding to the music number is selected by designating the music number, and information to which the specified classification code is assigned is read from the character code information included in the music number. Alternatively, if the information is collectively stored for each classification code, character code information of the specified classification code is selected, and information corresponding to the specified music number TNO is read out of the selected character code information.

Further, the information arrangement method of the present invention
A CD playback device for playing back recorded CDs
By configuring the apparatus as a CD reproducing apparatus with an autochanger function for mounting and reproducing a disc, it is possible to easily search for a disc. In other words, in a conventional autochanger, when a large number of discs are mounted and used, it is impossible to memorize the number of the song on which disc and what song. It takes a lot of trouble to select the song you want. Since the number of the song number recorded in the Q channel subcode of mode 1 does not indicate the content of the song itself, it is difficult to select songs in a situation where there are many discs, which neglected the spread of autochangers. I have. Therefore, by using the CD recorded by the information arranging method of the present invention, it is possible to immediately search for a desired tune even in an autochanger. Also, if this is applied to an autochanger type car CD, a desired music can be selected from the room even if the changer is installed in the trunk room,
Very convenient. The specific method will be described.

For all the discs mounted on the autochanger, the disc title reproduced at the first replay and the data of the place (disc number) where the disc is set are stored in the non-volatile RAM in a corresponding manner (other character codes). Information is also stored of course). Thereafter, when the disk is removed and the storage location of the disk becomes empty, this is detected and a flag indicating that there is no disk is added to the memory address corresponding to the disk number. When a new disc is inserted at this location, the data of the disc is read, the disc is identified by the disc title, and the presence or absence of disc information that matches this information is searched. If there is a match, the data is used as data on the disk at the corresponding position. Searching for a disc can be performed, for example, by designating a disc title with a key operation (designating with an alphabet or a kana). In this case, the specified disc title is compared with the disc title name stored in the nonvolatile RAM,
If there is a matching disc, the disc at the corresponding mounting location is mounted on the turntable and reproduction is performed. In addition, it is also possible to perform a song selection instructing a song title. in this case,
The corresponding song name is searched from the song names of all the disks stored in the nonvolatile RAM, and if there is the same song name, the corresponding song number of the disk corresponding to the song name is reproduced. At this time, the name of the corresponding disc is also known, and the name of the song is displayed. In addition, music selection based on information other than the music title (such as the name of the player) can be performed in the same manner. It should be noted that such music selection based on a music title or the like can also be applied to a playback device having no autochanger function. If the location of the disc and the track number are known, this can be directly specified by key operation. If the information of the disc is in the non-volatile RAM, the disc name and the track name are immediately displayed. Search for the song. Thus, the information arrangement method of the present invention
Therefore, by configuring a CD playback device that plays back a recorded CD as an autochanger, it is possible to freely select a song that the user wants to listen to. It should be noted that the initially mounted disc requires a certain amount of time to read out information, so the display speed is slow, but the display can be performed at high speed after the second reproduction. In addition, since the autochanger often listens to the stored disc many times, the delay of the first response does not matter much.

The information arrangement method of the present invention also
The operability of the remote controller can be improved by using the recorded CD and using a bidirectional remote controller as shown in FIG. In other words, the conventional two-way remote controller uses the number of the location where the disc is mounted or the number of the song even if the information of the disc is transmitted from the main body of the CD playback device in a wired or wireless manner. I didn't know what could actually be played. Therefore, the information recorded by the information arrangement method of the present invention is
By using the CD, it is possible to know the information on which disc is mounted at which location, what kind of music is recorded, and what kind of performer is playing, even with the remote controller. A specific example of a method for realizing this with the remote control 96 of FIG. 5 will be described. When a music number is designated by the remote controller 96, a music number inquiry signal is emitted from the remote control transmission / reception unit 100 and transmitted from the light emitting unit 100. The light receiving section 104 on the main body side receives this and sends it to the control circuit 86 via the remote control transmitting / receiving section 106. The control circuit 86 reads out the song title of the corresponding song number when the song title is stored in the RAM 93. The music title data is emitted from the remote control transmitting unit 106 and transmitted from the light projecting unit 108. The remote controller 96 receives the light with the light receiving unit 110 and displays it on the display 112. If the requested data has not been stored in the main unit yet, a signal indicating that the data is being read is sent to the remote control 96, the music of the corresponding music number is reproduced, and the data is transmitted to the remote control 96 when the necessary data is completed. Send. At this time, even when the reproduction operation signal is not sent to the main body, the processing is automatically performed, and no sound is output during that time. The above is a method that functions in response to an inquiry from the user's hand, but data may be sent unilaterally from the main body. For example, when this is transmitted to the main unit when the remote control 96 is in the active state, the main unit sends the information of the song number and the song title of the mounted disc. The remote controller 96 stores this information and uses it for display as needed. If there is an instruction of the music number, the music title of this music number is read from the memory and displayed. When the reproduction is started in response to the reproduction instruction, the main body side sends data (such as the music number in mode 1 and time information) every moment, and the remote controller 96 displays this data in real time.
The present invention can also be applied to CDV and other CD standard discs.

[0034]

As described above, according to the present invention, according to the present invention, tiger information about the track what you want to know the user
Click play and can be displayed in parallel. In addition, since recording, reproduction and display are performed using the Q subcode, it can be dealt with only by adding a small amount of data to the current standard, and the circuit configuration for character display is much more expensive than the conventional device. It can be realized without becoming. Also, since information on the track contents is recorded as a code, the display can basically be a line display such as an LCD or an LED, so that the display can be provided in the main body of the reproducing apparatus, and the display of the conventional CD graphics can be performed. As described above, the display can be performed without a TV monitor. In addition, since it is recorded as a code, it can be used for data search or the like, which is more user-friendly. In addition, the character pattern can be determined by software of the reproducing apparatus, and it is only necessary to record a code on a CD. Therefore, it is easier to create recording information than a CD graphic. Furthermore, since the recording is performed by using the Q channel subcode which is always inserted in the CD format, the total data amount becomes necessary and sufficient, and since the data is edited with the editing information, the data efficiency is improved, and the instant data transmission is performed. The amount is small. Also, as described in the embodiment, if a CD reproducing apparatus for reproducing a CD recorded by the information arranging method of the present invention is configured as an autochanger, music selection (track selection) becomes very easy. Also, as described in the embodiment, if it is possible to see the title of the music at hand of the remote controller, the significance of realizing the two-way communication of the remote controller becomes large. Further, according to the present invention, information on track contents is allocated to at most eight per 100 Q-channel data frames and recorded. Therefore, the display of the track number (track number) and the time information in the mode 1 of the conventional standard is performed. Can be performed without any problem. Since ASCII or JIS kanji codes are used as character codes, efficient recording can be performed. Also, since only a small amount of information is added to the current standard, the production of CD software can be used as it is, so that it is very easy to realize.

[Brief description of the drawings]

FIG. 1 is a block diagram showing a configuration example of a character display circuit of a CD reproducing apparatus for reproducing a CD recorded by the information arranging method of the present invention.

FIG. 2 is a diagram showing an embodiment of a CD data format according to the information arrangement method of the present invention.

FIG. 3 is a diagram showing an embodiment (in the case of only reference characters) of one line of data according to the information arrangement method of the present invention.

FIG. 4 is a diagram showing an embodiment of data for one line (in the case of only optional characters) according to the information arrangement method of the present invention.

FIG. 5 is a block diagram showing an example of the overall configuration of a CD reproducing apparatus for reproducing a CD recorded by the information arranging method of the present invention.

[Explanation of symbols]

12 CD, 90 display (display means), 118 character display circuit, 120 reproduction output means, 122 subcode channel identification means (Q channel information detection means), 1
26 ... Specific information identification means, 128 ... Information classification means.

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int.Cl. ⁷ , DB name) G11B 27/00 G11B 20/12 G11B 27/10 G11B 27/34

Claims (1)

(57) [Claims] 1. A subcode Q channel data frame in a program area of a CD, at most eight frames per 100 frames, ASCII or JIS kanji code character code information and editing information representing the contents of a corresponding track. Corresponds to the modes 1 to 3 already defined with the 4-bit address of the subcode Q channel.
A method of arranging information of a CD recorded together with an identification code according to a newly defined mode .