KR930012197B1 - Compact disk and index displayer of compact disk in audio/video system - Google Patents

Abstract

This disk displays a index function (song no, title, words) of compact disk on a monitor by characters. It comprises a sink bit, data bits and a parity bit for recording and playbacking several songs by the digital method. One song is divided by resp. bars. A content of the each bar is coded and recorded in least significant bit of the data bits, thus the system playback is the content by the character signals.

Description

Compact disc with compact disc index display and character information display in composite audio / video systems

1 is a perspective view of a composite audio / video system having a device for displaying the index function of a compact disc in accordance with the present invention.

2 is a block diagram of an apparatus for displaying on a monitor the index function of a compact disc according to the present invention.

Fig. 3 is a diagram showing the digital data format of a compact disc having a character information display function.

4 is a recording example of a compact disc having a character information display function.

5 is a control flowchart for displaying the index function of a compact disc as a character on a monitor.

* Explanation of symbols for main parts of the drawings

1: video tape recorder 2: neck portion

3: color television 4: compact disc player

13: monitor 20: main computer

30: Compact disc player control microcomputer 60: least significant bit extractor

61: least significant bit storage 62: display control unit

63: decoder 64: character signal generator

65: Song name, lyrics switch

The present invention provides an audio / video system in which a television, a video tape recorder, and a compact disc player are integrally formed, comprising: a compact disc index display device for displaying the index function (song number, song name, lyrics) of a compact disc on a monitor; A compact disc having a character information display function.

At present, the applicant is developing a complex audio / video system in which a color television, a video tape recorder and a compact disc player are integrally formed. Such a system has a neck portion in the video tape recorder 1 as shown in FIG. (2) is provided, and a television 3 is mounted on the neck portion 2, and a compact disk mounting portion 4A into which the compact disk player 4 can be inserted is provided on the upper end of the television 3.

This composite audio / video system main power source is supplied by a main power switch 5 installed in the video tape recorder 1, which is designed to be operated mainly by the remote controller 6.

On the front of the video tape recorder 1, an input key portion 7 for performing various functions as in a normal video tape recorder is set, and a light receiving portion 8 for receiving an infrared beam from the remote controller 6 is also provided. do. In addition, a door 9 and a liquid crystal display 10 for inserting a video tape are provided. The television 3 is provided with a television power switch 11 and a large sole 12 capable of controlling volume, color, etc., and the monitor 13 and the left and right speakers 14, 15 are provided. It is installed. Here, the television 3 tilts in the up and down direction (arrow-A direction) by operating the remote controller 6 of the user, or the swivel (in the left-right direction (picture-B direction)). Swivel) movement so that the user can watch the television (3) in the desired direction, the up, down, left and right movement of the TV monitor is not shown tilt motor, swivel motor installed in the neck (2) By means of other accessories and various control circuits.

By the way, such a composite audio / video system has a combination of a video tape recorder 1, a color television 3, and a compact disc player 4, which are separately produced and marketed. The compact disc player 4 is provided with a small liquid crystal display device 4B. However, when the compact disc player 4 is inserted into the compact disc player mounting portion 4A, the user can change the display state of the liquid crystal display device 4B. You will never know.

In other words, since the compact disc player 4 is mounted on the television monitor 3, the user cannot know at all whether the compact disc (not shown) is mounted inside the compact disc player 4, and also the compact You cannot check this even if you press various function keys on the disc player. In addition, the current compact disc player displays only the song number on the liquid crystal display device 4B, and the name and lyrics of the song are not displayed on the liquid crystal display device.

Therefore, in view of the above circumstances, the present nickname is an audio / video system in which a compact disc player, a video tape recorder, and a color TV are constructed in combination with each other. It is an object of the present invention to provide a compact disc index display device of a composite audio / video system for convenience of use.

It is also an object of the present invention to provide a compact disc having a character information display function in which the contents of a song name and lyrics are recorded in a digital manner so that they can be displayed on a monitor when necessary.

According to a first embodiment of the present invention for achieving the above object, there is provided a compact disc for audio having sync bits, data bits and parity bits in order to digitally record and reproduce data for a plurality of pieces of music. F. In the lowest bit of the data bits on which music is recorded, one piece of music is divided into a plurality of measures, and the lyrics contents corresponding to each measure are coded and recorded before the above measures so that the contents of the lyrics are reproduced as a character signal during playback. It is.

In the compact disc according to the present invention, it is preferable that a data signal for the name of a song is recorded in the prelude part indicating the beginning of the song among the least significant bits.

According to a second embodiment of the present invention, there is provided a video tape recorder capable of reproducing a signal recorded on a video tape, a color television having a television broadcast or a monitor capable of displaying the video tape signal, and a plurality of pieces of music. A compact disc that can play an audio compact disc with a character information display function by dividing a piece of music into a plurality of measures in the lowest bit of the data bits and encoding the lyrics and song names corresponding to each measure before the measure. A compact disc index display of a composite audio / video system is provided, which is composed of a player and a neck portion installed between a video tape recorder and a color television to move the color television in left, right, up and down directions. Displays the song name and lyrics contents from the recorded audio signals. Extraction means for extracting only the significant bits and the least significant bit; Least significant bit storing means for sequentially storing the extracted bit signals in serial form; Display latch control means for receiving a signal provided from the least significant bit extracting means and generating a display control signal; Decoding means for decoding a signal output from said least significant bit storage means by a control signal; Text signal generating means for inputting the decoded signal to generate a song name and lyrics content text signal; Control means for generating a switching signal for selectively displaying the name of the song read and the lyrics of the lyrics read on the compact disc on a monitor, and for generating a signal for controlling the compact disc player; It is composed of a switch which operates by a switching signal generated by this control means and transmits the song number, song name and lyrics of the compact disc to the monitor during search mode or playback of the compact disc.

Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

FIG. 2 is a schematic block diagram of a composite audio / video system having an index function of a compact disc, i.e., a song number, song name, lyrics, etc., according to the present invention, the remote controller 6 shown in FIG. There are a number of function keys for performing the functions of the video cassette recorder 1, for example Vol. ▲: Vol. ▼: CH ▲: CH ▼: PWR: PLAY: REC: FF: REW: SEARCH: PGM: ENTER In addition, a key (eg, PWR: CONTRAST: SHARPNESS: BRIGHT: TONE: COLOR) for operating the color television 3; Keys for operating the compact disc player 4 are provided with various function keys such as, for example, OPEN / CLOSED: SEARCH: REPEAT: PAUSE: SKIP: MEMORY: PLAY, TRACK INDEX.

If a key for operating the video tape recorder 1 is input from the remote controller 6, the microcomputer 20 detects a signal of the key matrix input unit 21. If the main power key (this is only a video tape recorder), Power) is applied to the microcomputer 20, and at this time, all the circuit parts except the compact disc part of the circuit shown in FIG. 2 are enabled. If the channel selection key is pressed from the key matrix input unit 21, the microcomputer 20 controls the phase lock loop 22 to generate a tuning voltage to the tuner 23 so that the broadcast input through the antenna 24 is performed. The channel signal is tuned by the tuner 23 and input to the microcomputer 20.

Then, the microcomputer 20 controls the digitron 10 to thereby display the currently performing function as a character. In addition, the microcomputer 20 controls the on-screen display IC 25 to generate corresponding characters when reserving a program, performing a function of a video tape recorder or television, or performing a function of a compact disc player. Among the signals read from the video tape, the horizontal and vertical synchronizing signals are separated by the synchronizing signal separating unit 26 and used to generate a character signal applied to the on-screen display IC 25.

The radio frequency modulator 27 modulates the video signal to be displayed on the television monitor 13, and the deck 28 and the servo device 29 operate the video cassette recorder under the control of the microcomputer 20. FIG.

On the other hand, if the user wants to operate the compact disc player 4 shown in FIG. 1 by operating the remote controller 6, the microcomputer 20 receives the key signal to control the micro disc 30 for the compact disc player. At this time, the microcomputer 30 generates a signal for the motor driver 31 to drive the turntable driving motor 32. Then, as the motor 32 is rotated, the turntable 33 is rotated, and the compact disc 34 installed on the turntable 33 is rotated. When the compact disc 34 rotates, the pickup 35 reads the digital signal recorded on the compact disc 34 and applies it to the amplifier 36.

The signal thus read is applied to a focus and tracking controller 37, which controls the actuator 38 to control the focusing and tracking of the pickup 35.

The digital compact disc signal input from the focus and tracking controller 37 is provided to the digital signal processor 39, processed, converted into an analog signal by the digital / analog converter 40, and then via the output amplifier 41. It can be output to the outside through the speakers (14, 15), the functions of the video tape recorder and compact disc player described so far is common in the conventional video tape recorder and compact disc player.

Therefore, an essential matter in the present invention is an apparatus for displaying the index function of the compact disc player as a character on the monitor 13 during operation of the compact disc player, and a compact disc therefor, which will be described in detail.

First, when the main power is applied to the video tape recorder 1 shown in FIG. 1 by operating the remote controller 6, the main microcomputer 20 recognizes this and enables all the circuits shown in FIG. .

Here, the main microcomputer 20 performs a corresponding function when the function selection switch (not shown) from the key matrix input unit 21 or the remote controller 6 is pressed. If the function selection switch for operating the compact disc player 4 is pressed, the main microcomputer 20 controls the on-screen display IC 25 and simultaneously operates the monitor 13.

In addition, the microcomputer 20 provides the strobe signal STB to the microcomputer 30 for controlling the compact disc player, and enables the microcomputer 20 to supply the clock signal CLK and the strobe signal STB to the on-screen display IC 25. Control and supply power to the monitor (13).

By the way, when the compact disc player 4 shown in FIG. 1 is inserted into the mounting portion 4A, and a compact disc (not shown) is inserted into the compact disc player 4, the compact disc detector 50 does this. The main microcomputer 20 recognizes and provides a detection signal to the main computer 20. The main microcomputer 20 first provides a clock signal and a data signal to the on-screen display IC 25 so that the compact disc is mounted in the compact disc player 4. A character indicating "CD IN" is displayed on the monitor 13.

Then, when the user presses a function key (for example, PLAY: PAUSE; STOP; REPEAT: VOL ▼: VOL ▲, MEMORY, etc.) that can control the compact disc player in the remote controller 6, the main microcomputer 20 is compact. By controlling the disc player control microcomputer 30 to reproduce the disc signal recorded on the compact disc and providing the clock signal CLK, the strobe signal STB, and the data DATA to the on-screen display IC 25. The state of the compact disc player is displayed on the monitor 13. For example, when the compact disc is playing, the monitor 13 displays the characters `` CD PLAY NO.1 '' or displays various functions, i.e., when the user operates the remote controller 6, the corresponding character (song name is displayed). Characters) can be displayed.

On the other hand, in Fig. 2, the least significant bit extractor 60 extracts only the least significant bit from the digital data reproduced on the compact disc and provides it to the least significant bit storage 61 and the display control unit 62 for character display. In this case, the decoder 63 decodes the character information inputted from the storage unit 61 and the display control unit 62 to provide the monitor 13 through the character signal generator 64 and the switch 65. This will be described in detail.

The recording format of the compact disc used in the present invention is composed of sync bits, data bits, parity bits, and the like. In order to display the song name and lyrics on the monitor 13 when the compact disc is reproduced, the data bit (16) of the compact disc is used. The song name and lyrics should be recorded digitally. Therefore, as shown in FIG. 3A, among the 16-bit audio data output from the digital signal processor 39, the least significant bit LSB needs to be configured to be used as display data rather than audio data. Therefore, the least significant bit extractor 60 extracts only the least significant bit from each of 16-bit digital data output from the digital signal processor 39. The least significant bit extractor 60 continuously extracts the least significant bit to store the storage means ( 61) as shown in FIG. 3b. Therefore, the least significant bit storage section 61 for character display stores consecutive data. The continuous data is data representing character information, that is, song name and lyrics information.

The present invention will be described with reference to FIG. 4 to further understand the present invention.

For example, when a piece of music is divided into measures of AB, C, ... Z in Fig. 4, data indicating the name of the song is recorded at the beginning of the prelude among the least significant beats (LSB), and actually corresponds to the measure of 'A'. Record the lyrics (a) at the position of the bar ahead of them, and record the lyrics of the part 'B' in the part indicated by 'b'.

순차적 a, b, c, ... z ＂are recorded sequentially, and the beginning of each part is inserted with the beginning of the measure (hatched in Figure 4) indicating the time of each measure.

When the compact disk thus recorded is reproduced by the apparatus of FIG. 2, the data of " a " is stored in the bit storage section 61 as serial data as shown in FIG. At this time, the signal inputted to the display latch control unit 62 among the data extracted by the least significant bit extractor 60 provides the decoder 63 with the data (measure start code) of the hatched portion of FIG. 4 as a display control signal. In this case, the decoder 63 decodes the data stored in the storage unit 61 and displays it on the monitor 13 through the character signal generator 64 and the switch 65.

As described above, when the measure "A" is reproduced, the content of "a" is displayed on the monitor 13 as a text signal, and when the "B" measure is reproduced, the content of "b" is displayed on the monitor 14 as character information. .

5 is a control flow chart for displaying the song number, song name, lyrics, etc. of the compact disc according to the present invention on the monitor 13. First, the user operates the remote controller 6 to supply the main power source to the main microcomputer 20. FIG. If provided, the main microcomputer 20 recognizes this and operates the on-screen display IC 25 and the monitor 13, but steps 101 and 102 are displayed on the front of the video tape recorder 1 when the main power is not applied. Only the digitron 10 is activated (step 103).

When the user presses a function key of the compact disc player in the remote controller 6 while the main power is applied, the program proceeds from step 102 to step 104, and the main micom 20 controls the micro disc 30 for controlling the compact disc player. ) So that it is ready to operate the compact disc. If it is not a compact disc player function key, the program proceeds from step 104 to step 105 so that the microcomputer 20 sets the device of FIG. 1 as a video tape recorder mode or color television mode, not as a compact disc player mode. It works.

By the way, in a state in which a signal from the remote controller 6 for operating the compact disc player is input, the compact disc installed in the remote controller 6 when the user wants to know the song name or lyrics contents according to the song number recorded on the compact disc. When the search key is pressed, the main microcomputer 20 controls the microcomputer 30 for controlling the compact disc player to read a song name or lyrics recorded on the compact disc. In this case, the compact disc player microcomputer 30 applies a signal to the focus and tracking controller 37, which operates the actuator 38 to move the pickup 35 from the inner circumference to the outer circumference of the compact disc. Search for song titles or lyrics.

In more detail, the compact disc player micom 30 recognizes a signal that the current mode is the search mode from the main micom 20 to allow the pickup 35 to perform a quick search function of the compact disc ( Steps 106 and 107, wherein the pickup 35 is moved from the inner circumference to the outer circumference, and the song name and measure data (a, b, c, ----- z) recorded in the least significant bit (LSB) as shown in FIG. Is read and provided to the digital signal processor 39.

Then, these data extracted from the least significant bit extractor 60 are temporarily stored in the storage unit 61 and then decoded by the decoder 63 to be provided to the character signal generator 64, which is then transmitted to the character signal generator 64. The switch 65 is provided.

At the same time, the main microcomputer 20 applies a high state signal to the switch 65 to turn on the switch 65. When the switch 65 is turned on, the title and lyrics of the first song generated by the character signal generator 64 are displayed on the monitor 13. (Step 108).

When the search for the first song is completed, the program proceeds from step 109 to step 110, and the counter is incremented by one to search for the second song. When the search mode is continued, the program proceeds to step 111. In step 107 is returned to repeat the above-described process.

On the other hand, if the search mode is not performed as a result of the determination in step 106, the program proceeds to step 112. When the user presses the play key on the remote controller 6, the microcomputer 30 for the compact disc player is pressed. The program proceeds to step 113 to play the compact disc, and when a function key other than the play key is pressed, the corresponding function is performed. (Step 114) When such a play function is performed, the main microcomputer 20 is executed. ) Supplies the clock signal CLK, strobe STB and data signal DATA to the on-screen display IC 25 to monitor the character " CD PLAY " (Step 115). The main microcomputer 20 then controls the on-screen display IC 25 to display the playback time of the compact disc and the current song number on the monitor 13. (Steps 116, 117).

When such a song number is displayed, when the user presses a song name key on the remote controller 6 when the disc is played, the main microcomputer 20 controls the microcomputer 30 for the compact disc player so that data related to the song name can be stored as described above. (Steps 118 and 119) In addition, when the user presses the lyrics key of the remote controller 6 (step 120), the lyrics of the corresponding song are displayed on the monitor 13 and the speakers 14 and 15 are connected to the compact disc. The audio signal is output to the outside through the speakers 14 and 15 (step 121).

When playback of one song is completed, the program proceeds from step 122 to step 123 to play the next song. If the stop key of the compact disc player is not pressed, the program proceeds to step (124). When the stop key is pressed, the microcomputer 20 turns off the compact disc player control microcomputer 30 and deletes all characters related to the compact disc displayed on the monitor 13 (step 125). )

The present invention operating as described above can provide convenience in use by displaying the song number, song name, lyrics, etc. of the compact disc on a monitor in a composite audio / video system in which a compact disc player, a color television, and a video tape recorder are integrally formed. It is characteristic.

Claims (3)

An audio compact disc having sync bits, data bits, and parity bits for digitally recording and reproducing data for a plurality of pieces of music; The least significant bit among the data bits in which the music is recorded is divided into a plurality of measures so that the lyrics contents corresponding to each measure are coded and recorded before the above measures so that the lyrics contents are reproduced as character signals during playback. Compact disk having a character information display function characterized in that. The compact disc having a character information display function according to claim 1, wherein a data signal for a song name is recorded in the prelude part indicating the beginning of the song among the least significant bits. A color tape having a video tape recorder capable of reproducing a signal recorded on a video tape, a television broadcast or a monitor capable of displaying the video signal, and the least significant bit of data bits for a plurality of pieces of music contain one piece of music. A compact disc player capable of reproducing an audio compact disc having a character information display function in which the lyrics and song names corresponding to each measure are coded and recorded before the above measures, and between the video tape recorder and the color television. A compact disc index display device of a composite audio / video system having a neck portion installed in a neck and moving the color television in left, right, up, and down directions, the song title and lyrics being displayed among audio signals recorded on the compact disc. Extract only the least significant bits Least significant bit extraction means and; Least significant bit storage means for sequentially storing the extracted bit signals in serial form; Display latch control means for receiving a signal provided from the least significant bit extracting means and generating a display control signal; Decoding means for decoding a signal output from said least significant bit storage means by said control signal; Text signal generating means for inputting the decoded signal to generate a song name and lyrics content text signal; Control means for generating a switching signal for selectively displaying character information, such as music name and lyrics, read on said compact disc, on said monitor, and for generating a signal for controlling said compact disc player; The compact disc of the composite audio / video system, which is operated by a switching signal generated by the control means and configured to switch the song number, song name, and lyrics of the compact disc to the monitor during the search mode or playback of the compact disc. Index display.