JPH04360088A - Music selection device for cd reproducing device - Google Patents

Abstract

PURPOSE:To select an aimed music in a short time without knowing preliminarily the music number wished to listen. CONSTITUTION:A reproduction auxiliary information of music titles, etc., of recorded musics read from a CD is stored in a RAM 93. When a music number is indicated with an operation key 88, the title of the music is read out from the RAM 93 with a reproduction means 90. When the music is a desired one, it is reproduced by giving a reproduction instruction from the operation key 88. When it not the desired one, by successively instructing a further different music number, the desired one can be searched by watching the screen of a display 90. Then even through a listener does not know preliminarily the music number he wishes to listen, the music can be selected without reproducing the head of the music one by one and in a short time the selection of the music he wishes to listen can be performed.

Description

[Detailed description of the invention]

0001

[Industrial Application Field] This invention is a CD (compact)
This is a music selection device for a disc playback device that allows music selection by viewing the display of music titles and the like.

0002

2. Description of the Related Art Conventional music selection devices for CD players generally display the numerical value of the pressed song when a song number button is pressed, and at the same time search for that song and start playing it.

0003

[Problem to be Solved by the Invention] With the conventional music selection device, if the song number of the song you want to listen to is not known in advance, the song is searched by playing the beginning of each song one by one. It took a long time to select the songs. The present invention solves the problems in the conventional technology and provides a song selection device for a CD playback device that allows you to select a song in a short time even if you do not know the song number of the song you want to listen to in advance. That is.

0004

[Means for Solving the Problems] The present invention provides a memory means for storing and holding playback auxiliary information for each song recorded on a CD, a song number instruction operation means for instructing a song number, and a song number instruction operation means for instructing a song number. a reproduction auxiliary information read control means for reading reproduction auxiliary information of a corresponding song from the memory means based on an instruction operation by the operation means; a display means for displaying the reproduction auxiliary information read from the memory means; and a display means for displaying the reproduction auxiliary information read from the memory means; A reproduction command means for instructing the reproduction of a song having a song number designated by the instruction operation means, and a reproduction method for searching the starting position of the corresponding song on the CD based on the reproduction command from the reproduction instruction means and reproducing the song. The control means is also provided.

[0005] Here, the reproduction auxiliary information is not essential control information for reproducing music signals etc. recorded on a CD, but it includes information such as song titles, disc titles, and singers that are convenient to have. Refers to auxiliary information such as first name.

[0006]

[Operation] According to the present invention, when a song number is specified, the song title, for example, is read out from the memory means and displayed on the display means as playback auxiliary information for the corresponding song, and if the song is the song you want to listen to, By giving a playback command from the playback command means, the song is played back, and if it is a song that you do not want to listen to, you can sequentially instruct another song number, and then check the display on the display to see if you want to listen to the song. Since the song can be searched, listeners can select the song they want to listen to in a short time without having to play the beginning of each song, even if they do not know the song number in advance. You can select songs.

[0007]

【Example】

(Example 1) An example of the present invention will be described. Here, playback auxiliary information regarding the song content is recorded on the CD using the character code information of the Q subcode newly defined as mode 5 described in the specification of Japanese Patent Application No. 2-163635 filed by the present applicant. , a case will be described in which this is read out from a CD, stored in a memory means, and used for music selection.

FIG. 2 shows an example of the data format of a CD in which character code information of reproduction auxiliary information is recorded in the Q subcode of mode 5. In this data format, as shown in FIG. 2A, one frame consists 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), it configures eight channels P, Q, . . . , W, each channel having 98 bits.

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) have already been defined, and here mode 5 (0101) is newly defined as the character display mode of reproduction auxiliary information. Note that if the appearance rate of mode 5 is set to 8/100 or less at most, predefined modes 1 to 3 can be reproduced without any problem.

The contents of the data block (72 bits) in mode 5 are shown in FIGS. 2(d) to 2(f). The data signal (specific information) in mode 5 consists of three types of data blocks shown in (d) to (f). This is classified as follows according to the first two bits (DC). DC: Data Content (displays the contents of the recorded block) 00: Control block (CB: Control
Block, editing information) Indicates that the corresponding data block consists of control data for displaying characters. 01: Basic character block (BC: Basic Char
Acter Block, character code information (ASCII
)) Indicates that the character code information of the corresponding data block is composed of 8-bit ASCII alphanumeric character codes as standard characters. 11: Optional Character Block (OC: Optional Character Bl
ock, Character code information (JIS Kanji, etc.)) Indicates that the character code information of the corresponding data block is composed of 16-bit JIS Kanji codes as optional characters.

[0011] The data format of the character code information in the above various data blocks will be explained. ■ Data format in control block CB (Figure 2 (d)) i) TBN: Total Block Number
r (4 bits) Indicates the number of character blocks (one block consists of 8 characters for standard characters and 4 characters for optional blocks) that make up one character line (
control blocks are not counted). 0001: 1 block 0010: 2 block: : 1111: 15 block

ii) RN:Repeat Num
ber (2 bits) Indicates whether this is the first data or the second data of data written twice to prevent read errors. 01: First data 10: Second data

iii) TNO: Track Num
ber (8 bits) represents the song number to which the displayed song content belongs, and only this data is composed of a BCD code. The TNO basically matches the TNO in mode 1, but if you want to enter the track number information for the next song before the end of the previous song, as described later, the TNO in mode 1 and the TNO in mode 5 will basically match. The track number display starts from the time when the TNOs match. 0000 0000: The character line in which this TNO is recorded represents data that is common to the entire disc, such as the disc title and singer's name, and may be displayed at any time. 0000 0001: 1st song Data corresponding to this song number: :
〃1001 1001:99th song
〃1111 1111: If the software side requests that characters be displayed in real time at the same time as the data is read by the player (for example, karaoke lyrics, etc.), do this.

iv) TLNO: Total Li
ne Number (12 bits) 00 indicating the number of character lines recorded in the corresponding song
00 0000 0000: No characters recorded 0
000 0000 0001: 1 line: : 1111 1111 1111: 4027 line

0015
]v) CC: Character Code (6 bits) Optional character (kanji) decoding code designation 00 0000: Consists only of standard character blocks, no optional characters are recorded. 00 0001: Kanji is recorded as an optional character. 00 0010: Although undetermined, depending on the character code that is set, the same 8-bit characters as the standard character block are also possible (for example, Hiragana, Kataka 11
1111 na). 11 Same until 1111.

vi) SC: Select cod
e (4 bits) Classification code representing the data content of the corresponding character line. 0000: Total title of the disc 0001: Title of the corresponding song 0010: Composer 0011: Lyricist 0100: Arranger 0101: Conductor 0110: Main vocalist 0111: Performance orchestra name 1000: Performance hall 1010: Mixer: 1111:

vii) BTCN: Basic To
tal Character Number (6 bits) Represents the number of characters included in the character line of the reference character (reference character line). Using this, it is possible to control the display so that it is displayed in a well-balanced manner. 00 0000: 1 character: : 11 1111: 63 characters

viii) BLCN: Basic
Line Change Number (6 bits) In the standard character line, this is an appropriate character position designation when changing lines within the corresponding character line, and indicates the position of the beginning of the character that can be changed in the line, counting from the first character. By using this, even if the number of digits on the display on the playback device side is less than the number of characters that can be displayed in one line, a well-balanced display can be achieved, and there is a degree of freedom in selecting the grade of the display on the playback device. 00 0000: You can change lines anywhere. 00 0010: A line change may be made starting from the second character. 00 0011: A line change may be made starting from the third character. : : 11 1111: You may change the line starting from the 63rd character.

ix) OTCN:Optional
total Character Number (5 bits) Represents the number of characters included in the character line of optional characters (optional character line). 0 0000: No optional characters. 0 0001: 1 character: : 1 1111: 31 characters

x) OLCN:Optional L
ine Change Number (5 bits) Indicates the position of the appropriate character when changing the line within the corresponding character line for optional characters, counting from the first character and indicating the position of the beginning of the character that can be changed in the line. 00 0000: You can change lines anywhere. 00 0010: A line change may be made starting from the second character. 00 0011: A line change may be made starting from the third character. : : 11 1111: You may change the line starting from the 31st character.

■Data format in standard character block BC (FIG. 2(e)) i) BN: Block Number (4 bits)
It represents the order (position) of the corresponding block in one character line. This order does not include control blocks. Data written twice is counted as one. 0001: First character block 0010: Second block: : 1111: 15th block

ii) RN:Repeat Num
ber (2 bits) (same as control block)

iii) d1 to d8: Alphanumeric character data in ASCII code consisting of 8 bits 0000 0000: Alphanumeric character in ASCII code: : 〃11
11 1110 〃1
111 1111: Non-operation. The part where this symbol is recorded does not display any characters and is simply in a standby state. Unlike space display, when the next data arrives, it is displayed by filling it with the previous character. It does not count as the number of characters. Application: Adjustment data when the number of characters on one line is not divisible by the number of blocks. Display timing when displaying characters in real time.

■ Data format in optional character block OC (FIG. 2(f)) i) BN: Block Number (4 bits)
(Same as standard character block) ii) RN:Repeat Number (2
bit) (same as standard character block) iii) D1 to D4: Kanji data in JIS code consisting of 16 bits 0000 0000 0000 0000: JIS Kanji code: 〃1111
1111 1111 1110 〃1
111 1111 1111 1111: Functions the same as a non-operation in the standard character block.

In character display in mode 5, a reference character block is always recorded so that at least alphanumeric characters can be displayed even on low-cost machines. Recording of optional characters is optional. This allows display to be made in accordance with the grade of the playback device.

By configuring the data block of character code information as described above, there are the following advantages. (b) Modifications to the current standard are minimal; only a new mode 5 needs to be added to the Q subcode, so compatibility with the current standard is complete, and discs based on this new standard can be played on conventional CD players. There is no problem. In addition, since the Q channel subcode that is always inserted in the CD format is used for recording, the total amount of data is necessary and sufficient, and items such as display characters such as "composer" are required when displaying items. JIS for each data
If you record it in kanji code, this alone will be 16 x 3 = 48 b
Although it always requires 4 bits of "0010" as editing information SC in the control data, the overall data efficiency is good, and effective display can be performed with the minimum amount of transmitted data. This can be achieved without increasing the transmission speed, and the current standard can be used as is.

(b) Since it is code information, once read data is stored, it can be used for various functions such as data search. (c) Classification code (SC in control block
:Select Code) by a key input by the user, the data to be displayed can be selected on the player side.

Next, FIGS. 3 and 4 show examples of one character line data based on character code information constituted by a combination of the above three types of data blocks. FIG. 3 shows the case where only standard characters are recorded, and FIG. 4 shows the case where optional characters are recorded. Each block in FIGS. 3 and 4 has 72 bits, and is composed of one of the three types of data blocks (FIGS. 2(d), (e), and (f)). A series of line data is a data block (Mode 5 Q subcode data) inserted into the subcode Q channel sporadically with an appearance rate of 8/100 or less.
It is constructed by detecting and connecting.

A control block is placed at the beginning of one line of data, followed by a character block. Each block is recorded with the same data repeated several times (here twice) to prevent reading errors.

When one line of data is completed, the SC in the control block is switched, and data with different contents is subsequently recorded. When the SC is sequentially switched and recording is completed, the SC is returned to the beginning and the same data is repeatedly recorded as long as the same song continues. Information common to the entire disc, such as the disc title and singer, is also recorded repeatedly. Thereby, appropriate display can be performed even if playback is started from the middle of the song. Further, even if a reading error occurs temporarily, if correct information is reproduced afterwards, correct display can be performed. Furthermore, since data is constantly received during a song performance, the total amount of data is necessary and sufficient, and since editing is performed using editing information, data efficiency is good, and the amount of instantaneous data transmission can be small.

[0031] In the case where the block is composed of only reference characters as shown in FIG. 3, the reference character block is arranged following the first control block. The control block in the case of Fig. 3 is as follows: TBN=0100 (consisting of 4 blocks per line) CC=
00 0000 (consisting of reference blocks only) BTCN
= 10 0000 (32 characters constitute the standard character line) OTCN = 0 0000 (no optional characters). Note that if one line is set to 15 blocks (maximum TBN value is 1111), if it is composed of only standard characters, 8 characters (number of characters in 1 block) x 15 blocks = 12
It becomes 0 characters.

When the optional characters shown in FIG. 4 are recorded, standard character blocks and optional character blocks are alternately arranged following the first control block. The control block in the case of Fig. 4 is TBN
=0110 (1 line consists of 6 blocks) CC=00
0001 (recorded with optional characters) BTCN=01
1000 (24 characters make up the standard character line) OTCN=0 1100 (12 characters make up the optional character line) (Note that TBN in the control block counts the number of standard character blocks and the number of optional character blocks separately. In some cases, it is more convenient.) As shown in Figure 4, when recording optional characters, by always recording standard characters as well, even low-cost machines with displays that cannot display kanji can at least display alphanumeric characters. . Furthermore, even if kanji can be displayed, it would be convenient if the user could switch between displaying either one or both on the playback device.

[0033] If one line is set to 15 blocks (the maximum value of TBN is 1111), in the case of optional characters such as kanji that are composed of 16 bits, 4 characters x 1
Up to 5 blocks = 60 can be recorded.

For example, the amount of character codes recorded per time in the cases of FIGS. 3 and 4 is as follows. Recording amount of subcode blocks: 75 blocks/sec Appearance rate of Q subcodes in mode 5: 5/100 Number of character codes: (Kanji) 4 characters/block (English characters, kana) 8 characters/
Number of characters that can be recorded in blocks: (Kanji) 75 x 5/100 x 4 =
15 characters/second (English characters, kana) 75 x 5/100 x 8 = 30 characters/second Character recording amount per time: (Kanji) 15/2 = 7.5 characters/second (in case of double writing) ( (English characters, kana) 30/2 = 15 characters/sec At this display speed, it takes time to complete the playback of one line of data, so it takes time from the time the song starts until the content is displayed. There is a risk. This problem can be solved by increasing the data transmission rate, but this would require a huge amount of transmission capacity and cause loss, making it impractical. Therefore, before the next song starts (before the previous song ends), the next song's character code information and song number data (TNO) are recorded in the Q subcode of mode 5, and the next song starts. The character code information of the song has already been played and stored, and the stored data is displayed when the TNO of mode 1 matches the TNO of mode 5. However, it can be displayed at apparently high speed.

[0035] Furthermore, error checking during playback is performed using CRC.
In addition to using a check code (Figure 2(c)), it also detects whether the same data is obtained twice.
Only correct data can be used and displayed. Such double checking can prevent abnormal displays from occurring.

The Q subcode data of mode 5 can be recorded not only in the song but also in the lead-in section. In this way, all song contents can be displayed immediately after the disc is loaded. If the lead-in area is narrow, it is possible to record the minimum amount of data such as the disc title and the song title of each song number.

Next, an embodiment of the CD reproducing apparatus of the present invention will be described. FIG. 5 shows the overall configuration of a CD playback device to which the present invention is applied. In FIG. 5, the optical pickup 10 directs the laser beam to the compact disc 1.
2 and receives the reflected light. The light reception signal is input to a focus error detection circuit 16 via a preamplifier 14, and a focus error is detected. The focus error signal is supplied to a focus actuator in the optical pickup 10 via a phase correction circuit 18 and a drive amplifier 20, and focus control is performed by a focus servo.

The tracking error signal is sent to the preamplifier 2.
2. The signal is supplied to the tracking actuator in the optical pickup 10 via the phase correction circuit 24 and the drive amplifier 26, and tracking control is performed by a tracking servo.

Further, the tracking error signal is supplied to the feed motor 32 via the phase correction circuit 28 and the drive amplifier 30, and feed control is performed by a feed servo.

The recording signal (HF signal) of the disc 12 detected by the optical pickup 10 is input to the digital IC 36 via the HF amplifier 34. Digital IC3
6 is a clock regeneration circuit 40 after waveform shaping the HF signal in a digitization circuit 38 for digital processing.
The frequency is compared with the reference frequency from the VCO 42. The comparison output is the CLV servo circuit 44 and the drive amplifier 46.
The disc motor 48 is controlled via the disc motor 48 to control the disc 12 at a constant linear velocity. The servo sequence controller 50 performs sequence control on focus servo, tracking servo, feed servo, and disk rotation servo.

[0041] The disc playback signal is sent to the EFM demodulation circuit 52.
After being EFM demodulated in
The AM control timing control circuit 58 sequentially reads out the data at an accurate cycle. The read data is subjected to data interpolation and data muting as necessary by a data interpolation and muting circuit 60, and then output. After being converted into an analog signal by a D/A converter 64, a sample/hold circuit 66,
At 68, the signals are divided into left and right channel signals, and outputted to output terminals 78, 80 via low-pass filters 70, 72 and amplifiers 74, 76. Synchronous separation circuit 82
separates the synchronization signal from the disc playback signal, and the subcode demodulation circuit 84 demodulates the subcode from the disc playback signal.

The control circuit 86 controls the operation keys 8 by the user.
8 or a remote controller 96, and displays information based on the demodulated subcode on the display 90. It also drives a loading motor 94 via a drive amplifier 92 to control loading of the disc tray.

The remote control 96 constitutes a two-way remote control with the main body of the playback device. The remote control 96 is equipped with an operation key 98, and a command signal based on the operation is outputted from the remote control transmitting/receiving section 100 and transmitted from the infrared projecting section 102. The main body of the playback device is equipped with an infrared receiver 104 that receives an infrared signal emitted from the remote controller 96 and sends the received signal to the control circuit 8 via the remote controller transmitter/receiver 106.
6 and execute the commanded function.

Furthermore, the display information reproduced by the main body of the reproduction apparatus is outputted from the remote control transmitting/receiving section 106 and transmitted from the infrared 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 RAM 93 (memory means) is mainly a RAM for storing character information, and stores character code information based on the Q channel subcode of mode 1 and mode 5 reproduced from the compact disc 12. Consists of attached RAM. When connecting to a personal computer, it can also be stored on a magnetic disk, IC card, etc. This memory content is stored in the operation keys 88 on the main body of the playback device or the operation keys 9 on the remote control 96 as the song number instruction operation means.
8 or a personal computer or the like to specify the track number, and is used for searching and displaying the playback position on the disc.

FIG. 6 shows an embodiment of a control configuration for reading, storing and displaying reproduction auxiliary information from a CD in the CD reproduction apparatus of FIG. This control configuration is realized by the digital IC 36, control circuit 86, etc. in FIG. The digital audio data reproduced from the CD is demodulated into an audio signal by the reproduction output means 120 (corresponding to the portion after the EFM demodulation circuit 52 in FIG. 5). Furthermore, subcodes of the digital audio data are detected by a subcode channel identifying means 122 (corresponding to the subcode demodulation circuit 84 in FIG. 5, etc.), and are identified as P channel subcodes, Q channel subcodes, etc.

The Q channel data processing circuit 124 demodulates the Q channel subcodes of modes 1 to 3 to obtain track number information TNO and time information TIME, and displays this on a display (display 90 or separately). (Indicators provided)
be displayed at a predetermined position. The specific information identifying means 126 converts the mode 5 Q channel subcode into identification information (ADR=
0101 (see FIG. 2(c)) and output.

[0048] The information dividing means 128
Channel subcodes are converted to DC codes (Fig. 2(d) to (f)
), the character code information (standard character block data, optional character block data) and editing information (
control block data). This information is stored in RAM93. Further, it is outputted so that it can be displayed on an external device (TV monitor, etc.).

Of the character code information, the optional character information is composed of JIS Kanji codes, and the standard character information is composed of ASCII codes, which are each decoded by the character code decoder 130 into display data of character patterns corresponding to the codes. . Then, the character code string output means 132 edits the decoded display data as a character code string that can be displayed externally using the editing information and outputs the edited data. This character code string data is displayed by the display drive means 13.
4 to a display 90 to display information regarding the content of the song. The display device 90 is composed of a line display using dot display such as an LCD or an LED, and is basically capable of displaying one line. CD
Depending on the grade of the playback device, it is also possible to display multiple lines. Furthermore, it is also possible to display a TV screen using a small liquid crystal or the like in the main body of the playback device.

The circuit shown in FIG. 6 can be adapted by basically using the conventional system as is, except for the JIS Kanji decoder, and adding software for mode 5 Q subcode processing.

An example of character display operation during normal playback using the control configuration shown in FIG. 6 will be described. Under normal playback conditions,
The data reproduced from the CD is reproduced as an audio signal by the reproduction output means 120. In parallel with this, the subcode channel identifying means 122 identifies the P channel subcode and the Q channel subcode. The Q channel subcode of mode 1 is the Q channel data processing circuit 12.
In step 4, the song number and time information are demodulated and displayed on the display 90 or a separate display.

The Q channel subcode of mode 5 is identified by the specific information identification means 126, and the information classification means 128
The information is divided into character code information and editing information and stored in the RAM 93. The character code information read out from the RAM 93 by the song selection operation described later is sent to the character code decoder 130.
The character code string output means 132 arranges and outputs a character code string according to the editing information.

As mentioned above, the same character code is repeatedly recorded in the Q subcode of mode 5 throughout one song, but the first one obtained is stored in the RAM 93, and from then on as long as the song continues. Necessary character codes can be read out from this RAM 93 and displayed. Alternatively, for the second data, only the important data, such as the title of the song obtained at the beginning, may be read and displayed again, and then this title may continue to be displayed. This is because it can be troublesome to display the same content over and over again with changes. Then, when the music changes and the content of the character code changes, this new character code is stored in the RAM 93 and displayed. The character code of the previous song is also left in the RAM 93 and is used for subsequent display, song searches, etc.

[0054] The display contents based on the character code information include various types specified by the SC code as described above, but they may be displayed in the same order as they are reproduced, or may be displayed in sequential order (if the display 90 is small). ) operation keys 88, 9
The display contents can be specified and displayed by specifying the SC code or display contents by 8. Furthermore, unless otherwise specified, the disc title and song title (or only the song title) can be automatically displayed. Furthermore, if optional characters are recorded, it would be convenient if one or both of the standard characters and optional characters could be displayed by the user's key operations.

[0055] When the playback of one CD is finished, that CD
All character code information for is stored in the RAM 93. Alternatively, if the character code information (at least the song title, disc title, etc.) is recorded in the lead-in section, these character code information can be stored in the RAM 93 when the CD is first set. Then C
Even if the CD is removed from the playback device, its memory remains and is used to select songs the next time the CD is played. In the next reproduction, since the character code information has already been stored in the RAM 93, no new storage will be performed. In order to prevent overflow of the RAM 93, it is convenient to be able to erase data on the disk that is no longer needed by the user's key operation. Before erasing your computer's magnetic card or IC card,
If you transfer it to a card, etc., you can use it again.

[0056] As for the storage format of the character code information in the RAM 93, for example, character code information of various contents for each song is stored together with a classification code (SC) assigned to each piece (that is, stored collectively for each song). ) can be done. Furthermore, as another form, the various character code information of each song can be stored separately for each classification code (SC) (that is, stored collectively for each classification code). Track number information (TNO) and classification code (SC) can be expressed by a storage address.

[0057] When reproducing a CD in which character code information is already stored in the RAM 93, a personal computer's magnetic disk, or an IC card, this stored information can be effectively used. For example, when you insert a disc, the disc title (SC=0000)
) to detect if the same disc title is already stored. If it has already been stored, the corresponding song title will be displayed in response to the subsequent key operation to specify the song number (TNO) (i.e., the beginning of the song).
Read from AM93 and display. When the character code information is played back and displayed by actually searching the position on the disc in response to key operations, the transmission rate is slow, so it takes time for the song title to be displayed. R
If the information is displayed based on the information stored in the AM93, the corresponding song title can be displayed immediately after the key designation operation. In this way, once the title of the installed disc is first identified, the rest can be done by specifying the track number or classification code by key operation (or by specifying the special key operation that corresponds to the displayed content). can be displayed instantly.

[0058] In order to read the character code information from the RAM 93, for example, if various pieces of information are stored together for each song, the corresponding song number is selected by specifying the song number, and the character code information included in this song number is selected. The information to which the specified classification code is assigned is read out of the character code information that is provided. Alternatively, if they are stored together for each classification code, the character code information of the designated classification code is selected, and the information corresponding to the designated song number TNO is read out from among them.

Next, FIG. 1 shows an embodiment of the music selection device of the present invention using reproduction auxiliary information stored in the RAM 93. Here, when a song number is specified, the corresponding song title is read out from the RAM 93 and displayed as reproduction auxiliary information.

In the music selection device 140 shown in FIG. 1, the operation keys 88 on the front panel are provided with music selection keys such as a numeric keypad. When you press the song selection key corresponding to the song number of the song you want to listen to, a song number instruction signal that instructs the song number is output, and the control circuit 86 (
It is input to the control circuit 86) in FIG. Based on this song number instruction signal, the reproduction auxiliary information readout control means 144 in the control circuit 86 RAs information on the song title corresponding to this song number.
Read from M93. This read control is performed by RAM93
If it stores various playback auxiliary information for each song, it selects the playback auxiliary information for the corresponding song number by specifying the song number TNO, and selects it from the character code information included in this playback auxiliary information. Read out the information to which the classification code of the song title is attached. In addition, if the RAM 93 stores playback auxiliary information for each classification code, the character code information to which the classification code of the song title is attached is selected, and information corresponding to the specified song number TNO is selected. Read out.

The character code information of the song title of the designated song number read out from the RAM 93 is sent to the display interface 146 (corresponding to the character code decoder 130, character code string output means 132, display drive means 134, etc. in FIG. 6). It is displayed on the display 90 via the screen.

[0062] The listener looks at this display and, if it is the song he or she wants to listen to, presses the operation key 8 on the front panel.
8, perform the operation to instruct playback. As a result, a reproduction command signal is output from the operation key 88 and input to the control circuit 86 via the panel interface 142. The reproduction control means 148 in the control circuit 86 thereby controls the optical pickup 10, the disk motor 48 (FIG. 5), etc. to reproduce the designated track number.

[0063] Furthermore, if the displayed song title is different from the song you want to listen to, you can specify a different song number and the corresponding song titles will be displayed one after another, making it easy to find the song you want to listen to. can. Therefore, even if you do not know the song number of the song you want to listen to in advance, you no longer have to play the beginning of the song one by one to find it, and you can select and play the desired song in a short time. be able to.

[0064] As for the operation contents for issuing the reproduction command signal, the following various types can be considered, for example. (a) Press the key that specified the song number again. (b) Press the play key. (c) Press the play command key specially provided for music selection operation.

[0065] Instead of issuing a reproduction command signal by operating the listener, as shown by the dotted line in Fig. 1, no operation is performed for a certain period of time (for example, 2 or 3 seconds) after the track number is specified. It is also possible to configure the timer 150 to detect that there is no playback and automatically issue a playback command signal.

[0066] The song number designation operation is not limited to using the numeric keypad; it is also possible to designate the song number by the number of times the + key, - key, etc. are pressed or the length of time the key is pressed.

[0067] Music selection operations and playback command operations can be performed not only by the operation keys 88 on the front panel but also by the operation keys 98 (FIG. 5) on the remote control 98. In this case, the song title is also displayed on the display 112 of the remote control 96.

The music selection control by the music selection device shown in FIG. 1 will be explained with reference to the flowchart shown in FIG. The song title is RAM9
3 (S1), and when the song number is specified using the operation key 88 (or 98) (S2), the corresponding song title is read out from the RAM 93 and displayed on the display 90 (or 112). (S3). When a reproduction command is given in this state (S4), a search is made for the starting position of the song (S5), and when the search is completed (S6), reproduction is started (S7).

[0069] Furthermore, if the song title displayed after specifying the song number is different from the song you want to listen to, another song title will be displayed by specifying a different song number (S8). . Then, by repeating this operation, the user finds the song he or she wants to listen to, and when the song is found, a playback command is given (S4) to play the song.

Note that in the control shown in FIG. 7, even if a song number is specified, the search operation is not performed until playback is commanded. By stopping the optical pickup (or keeping it in a pause state), playback can be started immediately when a playback command is given.

(Example 2) In the above Example 1, a single C
Although the case has been described in which music selection is performed with a CD installed, the present invention can also be applied to a CD playback device with an autochanger function that plays back a plurality of CDs installed. In this case, by using the disc title in the reproduction auxiliary information, the disc can be easily searched. In other words, when using a conventional autochanger with a large number of discs installed, it is impossible to remember which song is in which track number on which disc, and it is difficult to listen to it. It takes a lot of effort to select the song you want. The song number recorded in the Q channel subcode of mode 1 does not itself indicate the content of the song, so it is difficult to select songs when there are many discs, and this has hindered the spread of autochangers. There is.

Therefore, by using the character code information of the disc title and the song title stored in the RAM 93 of FIG. 5, it is possible to immediately search for the desired song even in the autochanger. Moreover, if this is applied to an auto-changer type car CD, it is very convenient because even if the changer is installed in the trunk, desired songs can be selected from inside the room. This specific method will be explained.

[0073] For all the discs loaded in the autochanger, the disc title played from the lead-in section etc. at the first playback is correlated with the data of the location (disc number) where each disc is set, and the R
Store in AM93 (other character code information is also stored). Further, image information is also stored with disc identification information added thereto. After that, when the disk is removed and the disk storage location becomes empty, this is detected and a flag indicating that there is no disk is attached to the memory address corresponding to the disk pick-up. When a new disc is inserted into this location, the data on the disc is read, the disc is identified by the disc title, and the presence or absence of disc information matching this information is searched. If there is a match, that data is used as the data on the disk at the corresponding position.

Disc search control using the disc title stored in the RAM 93 will be explained with reference to the flowchart of FIG. With the disc title and song title stored in the RAM 93 (S11), press the operation key 8.
8 (or 98) to specify the disc number (S
12) The disc title of the disc in the corresponding storage position is read from the RAM 93 and displayed on the display 90 (or 112) (S13). When a disc loading command is given in this state (S14), the CD in the corresponding storage position is loaded in the direction of the playback position (
S15), when the loading is completed (S16), the process moves to step S2 of FIG. 7, and the aforementioned song selection operation is executed.

[0075] If you specify a disc number and the displayed disc title is different from the CD you want to listen to, you can specify a different disc number (S
17), another disc title will be displayed. and,
By repeating this operation, once the desired CD is found and retrieved, the process similarly proceeds to step S2 in FIG.

[0076] The following various types of operations can be considered for issuing a disk loading command. (a) Press the key that specified the disc number again. (b) Press the disk loading key specially provided for disk selection. (c) Instead of issuing a reproduction command signal by operating the listener, a timer detects that no operation is performed for a certain period of time (for example, 2 or 3 seconds) after the disc number is instructed; Automatically issues a disk loading command.

[0077]

[Modification example] In the embodiment described above, the reproduction auxiliary information is composed of character code information, but it can also be composed of graphic information. (Patent application No. 2-4062 filed by the present applicant as one in which graphic information is included in reproduction auxiliary information)
There are those described in the No. 37 specification and drawings. ).

Furthermore, in the above embodiment, the case where the reproduction auxiliary information was recorded as the Q subcode information of mode 5 was explained, but it is also possible to record it in the Q subcode other than mode 5. It can also be recorded in

Furthermore, in the above embodiment, the song title is displayed by specifying the song number, but it is also possible to select the display content by the listener's operation (specifying the classification code SC). If you want to select songs by yourself, you can also display the names of the performers.

Furthermore, in the above embodiment, the playback auxiliary information recorded on the CD is read and stored in the memory means, but for CDs on which playback auxiliary information is not recorded, the user can input the disc title using the keyboard of a personal computer or the like. The disc title or song title can be entered and stored in the memory means, or the disc title or song title can be printed as a barcode on a CD jacket or the like, and the user can read it with a barcode reader and store it in the memory means. You can also do that. Further, the present invention can be applied to various CD playback devices based on CDV and other CD standards.

[0081]

As explained above, according to the present invention, when a song number is specified, the song title, for example, is read out from the memory means and displayed on the display means as playback auxiliary information for the corresponding song, and the song If it is a song that you want to listen to, the song is played by giving a playback command from the playback command means, and if it is a song that you do not want to listen to, you can display it by sequentially instructing another song number. Since the listener can find the song they want to listen to by looking at the display on the device, they can select the song they want to listen to without having to play the beginning of each song one by one, even if they do not know the song number in advance. You can select the songs you want to listen to in a short time.

[Brief explanation of drawings]

FIG. 1 is a block diagram showing an embodiment of a music selection device of the present invention.

FIG. 2 is a diagram showing an example of a data format for recording reproduction auxiliary information using a mode 5 Q channel subcode.

FIG. 3 is a diagram showing an example of data for one line (in the case of only reference characters) in the data format of FIG. 2;

4 is a diagram showing an example of one line of data in the data format of FIG. 2 (in the case of only optional characters); FIG.

FIG. 5 is a block diagram showing an example of the overall configuration of a CD playback device to which the present invention is applied.

6 is a block diagram showing an example of a control configuration for reading, storing, or displaying reproduction auxiliary information from a CD in the CD reproduction apparatus of FIG. 5; FIG.

FIG. 7 is a flowchart showing music selection control by the music selection device of FIG. 1;

FIG. 8 is a flowchart for controlling disc selection using playback auxiliary information in an autochanger type CD.

[Explanation of symbols]

12 CD 88, 98 Operation keys (track number instruction operation means, reproduction command means) 90, 112 Display (display means) 93 RAM (memory means) 140 Reproduction auxiliary information reading control means 148 Reproduction control means

Claims (1)

[Claims] [Claim 1] A memory means for storing and holding playback auxiliary information for each song recorded on a CD, a song number instruction operation means for instructing the song number, and based on the instruction operation by the song number instruction operation means, reproduction auxiliary information readout control means for reading reproduction auxiliary information of a corresponding song from the memory means; display means for displaying the reproduction auxiliary information read from the memory means; a reproduction command means for instructing the reproduction of the song of the number; and a reproduction control means for searching the starting position of the corresponding song on the CD based on the reproduction command of the reproduction instruction means and playing the song. A music selection device for a CD playback device.