KR0138296B1 - Compact disc karaoke reproducing apparatus with cd-rom driver - Google Patents

Abstract

The present invention provides a CD playback means; A command input unit; A display unit; A CD-ROM decoder which generates CD-ROM data by inputting digital data output to the CD reproducing unit; A CD-oQ playback unit for receiving the CD-ROM data from the CD-ROM decoder and generating a background signal comprising a plurality of still images suitable for an atmosphere of the song lyrics of the selected music; A CD-ROM interface for connecting a CD-ROM decoder and a personal computer; An audio selector for selecting an audio signal of a CD reproducing unit or an accompaniment signal of the CD reproducing unit and outputting the audio signal to an audio output terminal; A video selector for selectively outputting a background signal of the CD playback unit to a video output terminal; And display the operation state on the display unit and control the CD playback unit to read the selected data from the disc according to the command of the command input unit and the address information from the CD playback unit. And controlling means for controlling signal selection of the selector, and selectively controlling the CD-ROM data input enable state of the CD-ROM playback unit and the CD-ROM interface unit.

Therefore, the present invention can play back both a CD and a CD-ROM.

Description

CD-ROM driver compact disc video song accompaniment player

1 is a diagram showing a data structure of a Q subcode channel of a compact disc.

2 is a diagram showing an example of a content table of a Q subcode channel according to the present invention.

3 is a diagram for explaining the format of a program area of a video disc accompaniment compact disc according to the present invention;

4 is a diagram showing an example of a disc description format recorded in the disc description area of FIG.

FIG. 5 is a diagram showing an example of a background image index table recorded in the first table area of FIG.

FIG. 6 is a diagram for explaining a method of compressing background information recorded in the first data area of FIG. 3; FIG.

FIG. 7 is a diagram showing an example of a CD format of background information recorded in the first data area of FIG.

FIG. 8 shows an example of a music index table recorded in the second table area of FIG.

9 is a view for explaining a preferred embodiment of the feature information of the music information index table of FIG.

FIG. 10 is a diagram showing an example of a CD format of music information recorded in the second data area of FIG.

FIG. 11 is a diagram for explaining a method of reproducing background information of a CD player according to the present invention; FIG.

12 is a view showing the front portion of the set of cds according to the present invention.

13 is a view showing a key arrangement of the remote control device of the CD set according to the present invention.

FIG. 14 is a circuit block diagram of a CD-ROM driver combined CD according to the present invention. FIG.

The present invention relates to a compact disc image song accompaniment playback device for a CD-ROM driver. The present invention relates to a song accompaniment device that reads songs from a song accompaniment compact disc in which thousands of music lyrics and accompaniment data and thousands of background data are recorded. The present invention relates to a compact disc video song accompaniment player that can play a song accompaniment with a superimposed background and can also drive a cdrom disc.

Conventional song accompaniment apparatus, also known as karaoke apparatus, uses magnetic tape, video disk, so-called laser disk or semiconductor memory as recording medium.

Karaoke devices using magnetic tapes are difficult to search at high speeds because they cannot be randomly searched due to the characteristics of magnetic tapes. Karaoke devices that use video discs can be searched at high speed, but the lyrics are superimposed on the background of the fairy tale and the song accompaniment is played back. Limited to overtures. Therefore, 50 discs must be prepared for accompaniment of 1000 songs, so it is burdensome to purchase a large number of discs to enjoy various songs, and it is inconvenient to use because of the hassle of frequently changing discs even if a large number of discs are provided. . Therefore, the karaoke shop had to prepare tens or tens of video disc players and had at least one disc changer at that time, so there was an economic burden to replace the discs or to have an expensive automatic disc changer. Karaokes that use semiconductor memory can record hundreds of songs, but up until now, it has been economically expensive to use a large amount of memory to express image data suitable for songs.

On the other hand, a karaoke device that uses a compact disc as a recording medium has also been introduced. Since the CDG karaoke device writes graphic data as a subcode, the amount of information that can be recorded is limited. Since it is difficult and can not record more than 99 songs because the table of contents format of the CD is used, there is a problem that a large amount of discs must be purchased in order to enjoy a lot of songs like a video disc.

More specifically, the CD is a recording medium capable of storing optically modulated digital data signals on a disc having a diameter of 12 cm in a large capacity (up to 600 M bytes). An audio CD-DA containing digital audio data, digital audio data, and a character are included. There are CD-G and CD-EG, which contain not only audio but also lyrics and graphic backgrounds by recording data and graphic data, and CDV, which includes digital audio and video data. In addition, there are CD-ROMs for recording computer data and using them in databases, electronic publishing, and the like, and CD-Is for recording audio, video, text, and computer data for multimedia and the like.

The physical recording format of such CDs is based on the recording format of CD-DA. The data recording area of the CD is largely divided into a lead-in area LIA, a program area PMA, and a lead-out area LOA. The CD-DA records the digital audio data in the PMA and the time contents of the program, that is, the table of contents information, in the LIA. Therefore, the CD player reads the table of contents recorded in the LIA prior to the playback, seeks the selected program, and plays the program. The LIA has eight subcode channels called P, Q, R, S, T, U, V, and W. The table of contents information uses the Q channel and displays the song number and index of up to 99 programs from 1 to 99. CD-G adds a graphic function that displays karaoke lyrics and song images using R-W subcode channels not used in CD-DA.

Since such CD-DA or CD-G searches PMA programs by referring to the contents of the LIA, the number of programs that can be stored in the PMA is limited.

For example, since the maximum capacity of CD 1 is 800M bytes, 8,000 still images of 100K bytes can be recorded. Therefore, 8,000 catalog information cannot be included in the LIA. CD-ROM and CD-I reconstruct and record or process an audio data block consisting of 98 frames, which is a data processing unit of CD-DA, in sector units. The CD-ROM driver is connected to the host computer (personal computer) and performs playback operation dependently by the CD-ROM operating program mounted on the hard disk or floppy disk of the host computer. Therefore, since a CD-ROM requires the use of a specific host computer, compatibility between systems is inevitably required, and thus it is limited to spread in each home. In order to make up for the shortcomings of the CD-ROM, the CD-I has a computer, a character playback circuit, an image playback circuit, an audio playback circuit and a computer data playback circuit. It is solved. In other words, the CD-I system is a reproduction-only computer in which the hard disk or floppy disk of the computer is replaced with the CD-I disk. Such a CD-I system is almost identical to the computer operating system. Because only the application programs on disk can access the actual data, the specific OS and application programs are inevitably required, which leads to a cost increase due to specific software development. In addition, it is inconvenient that a computer cannot directly access a data location stored on a disk, but must be accessed through an OS or an application program. U.S. Patent 5,243,582 discloses a reproducing apparatus for a karaoke compact disc. In the above patent, by recording a file TOC in a data area of a compact disc and addressing the data area with reference to the file TOC, the capacity of the TOC can be expanded to 99 or more, so that an arbitrary position of a song can be selected and a specific song can be selected. Disclosed is a technique capable of repeatedly playing back a section of.

An object of the present invention is a compact CD-ROM driver compact that can play thousands of song accompaniment with a high-quality background to match the music atmosphere in a single compact disc to solve the problems of the prior art as described above Disc video song accompaniment to provide a new device.

The video song accompaniment reproducing apparatus of the present invention for achieving the above object comprises a CD reproducing means for reading data from a compact disc to output audio signals and digital data, a command input portion for inputting a command signal, and an operation state of the system. A digital audio decoder for generating an accompaniment signal of the selected music and a background signal composed of a plurality of still images corresponding to the mood of the song lyrics of the music by inputting a display unit and digital data output to the CD playback unit; An audio selector that selects and outputs the accompaniment signal of the CD-OQ decoder to the audio output terminal, a video selector for selectively outputting the background signal of the CD-OQ decoder to the video output terminal, an instruction from the command input unit and an address from the CD-OQ decoder According to the information, the operation status is displayed on the display and The control portion controls so that the reproduction data is read from the selected disk, and to determine the type of the disc is characterized in that a control means for controlling the selection of the audio signal selector and a video selector.

The CD-OQ decoder includes a CD-ROM decoder which inputs digital data from the CD-playback unit to output CD-ROM data, an interface unit for interfacing with the CD-ROM decoder, and a CD-ROM data supplied from the CD-ROM decoder through the interface unit, in a CD-ROM format. A MIDI data transmission unit for transmitting MIDI data of the system memory unit, a sound source processing unit for generating accompaniment sound data according to the MIDI data, a converter for converting the generated accompaniment sound data into an accompaniment signal and supplying it to an audio selector; A microphone sound detection unit for detecting a microphone sound, a video memory unit for storing background data superimposed with lyrics data of a system memory unit, an encoder for encoding a background image signal read out from the video memory unit into a television signal, TV signal and outside rain Superimposing means for superimposing false signals and supplying a background signal to the video selector, a synchronous separator for separating the external synchronization signal from the external video signal, and dividing a clock signal to generate an internal synchronization signal and generating an external synchronization signal. A synchronization signal generator for generating an internal synchronization signal synchronized with an external synchronization signal and generating a screen refresh address signal of a video memory unit, and a control signal generator for generating control signals and timing signals of each unit; And inputting CD-ROM data through an interface means, forming the input CD-ROM data into a CD format, and storing the CD-ROM data in the system memory unit and the video memory unit, and responding to the selected song number and the given command signal. And a control unit for providing the address information to the control means via the CD-ROM decoder. The clock generator of the control signal generator includes a horizontal synchronous separator for detecting an external horizontal synchronous signal from an external composite synchronous signal, a phase difference detector for detecting a phase difference between the internal horizontal synchronous signal and an external horizontal synchronous signal, and the presence or absence of an external composite synchronous signal. A synchronous detector for detecting and generating a synchronous detection signal, a first oscillator for generating a first oscillation signal having a first frequency, a second oscillator for generating a second oscillation signal having a second frequency, and a synchronous detection signal In response, the signal selector selects and outputs the first oscillation signal when the external synchronization is input, and selects and outputs the second oscillation signal when there is no external synchronization, and the gate controlling whether the phase difference detection signal passes in response to the synchronous detection signal. Means for inputting and dividing the oscillation signal selected by the signal selector, and externally synchronizing in response to the phase difference detection signal passing through the gate means. It is provided with an internal synchronizing signal generator for generating an internal synchronization signal and the control signal and for generating a minute, and a frequency divider frequency divider signal by delaying by a phase difference to the clock signal period, by frequency division by N binary input a clock signal. The synchronous signal generator includes a front end detector for detecting a front end of an external composite synchronous signal, an external synchronous input detector for outputting an external synchronous input detection signal for determining whether an external synchronous signal is input in response to an output signal of the front end detector, In response to the output signal of the detector, the pulse width of the external sync pulses is counted as a clock signal, and the external vertical synchronous front end detector detects the front end of the external vertical synchronous signal by the count value, and the front end detection signal and internal reference of the external vertical synchronous signal A field discrimination unit for generating a field discrimination signal for discriminating even / odd fields by comparing the signals, a horizontal synchronizing generator for counting clock signals and decoding count values to generate a horizontal synchronizing signal and a horizontal blanking signal, and a horizontal synchronizing unit Responding to the field discrimination signal by counting the leading signal of the horizontal synchronization signal of the generator and decoding the count value A vertical synchronizing unit for generating a direct synchronizing signal and a vertical blanking signal, a signal synthesizer for synthesizing the horizontal and vertical synchronizing signals to generate an internal composite synchronizing signal, and synthesizing the horizontal and vertical blanking signals to generate a blanking signal; And a sync selector for selectively outputting an external composite sync signal and an internal composite sync signal in response to an output signal of the input detector. The field discrimination unit discriminates the odd / excellent field based on the front end detection signal of the external vertical synchronization signal and the internal reference signal, and selects the output signal of the discrimination means in external synchronization in response to the external synchronization input detection signal. And selecting means for selecting the vertical blanking signal and pulse forming means for outputting the output signal of the selecting means as a field discrimination signal (E / ODD) in synchronization with a clock signal. The video memory unit includes a first selector for alternately multiplexing the first selection signal and a second selection signal in response to the first clock signal, and a second for multiplexing the read address signal and the write address signal alternately in response to the first clock signal. A selector, a pair of first and second image memories that write or read data in response to a write control signal, an output signal of the first selector, and an output signal of the second selector, and a first clock signal First and second data transfer gates for transmitting data of the first data bus to the second and third data buses, and data of the second and third data buses in response to the first clock signal. First and second bidirectional transfer gates which transfer data to the second image memory or data read from the first and second image memories to the second and third data buses, and the second in response to the second clock signal. Data on the data bus Latching and latching the latched data to the fourth data bus by a half clock delay; and latching the data of the third data bus in response to the second clock signal and the third clock signal, and simultaneously latching the data of the third data bus to the fourth data bus. And second output means for outputting, and an output transmission gate for transmitting data of the fourth data bus. The encoder and the super-imposing means separate the RGB data of the remaining N-1 bits except for the most significant bit of the transmission gate into RGB to generate an R signal, a G signal, and a B signal, and an R signal, a G signal, and a B signal. An RGB matrix for inputting a signal to generate a luminance signal, a first color difference signal and a second color difference signal, a luminance signal amplifier for amplifying the luminance signal, and a pair of modulators for modulating the first color difference signal and the second color difference signal, respectively And a first mixer for synthesizing a modulated color signal to generate a carrier color signal, a second mixer for synthesizing a carrier color signal, an amplified luminance signal and a composite synchronization signal to generate a composite video signal, and an attenuator for attenuating an external video signal. And a video signal selector for selectively outputting the attenuated external video signal and the composite video signal according to the most significant bit value, and an output amplifier for amplifying the selected video signal. The MIDI data transmission unit transmits a predetermined clock by counting a system clock signal according to first input latch means for latching .N-bit parallel time data in response to a first input enable signal, and time data latched to the first input latch means. A transmission clock generating means for generating a clock signal, second input latch means for latching N-bit parallel transmission data in response to a second input enable signal, and counting the transmission clock signal in response to a second input enable signal; An output selection signal generating means for generating a counting value as an output selection signal, and an N-bit parallel transmission data signal latched by the second input latching means to convert to an N + 2-bit serial data signal in response to the output selection signal for output. Parallel conversion means is provided. The MIDI data transmitter further includes transmission end signal generating means for generating a transmission end signal FLG in response to the output selection signal. The transmission clock generating means counts the system clock signal by setting the latched value to the first input latch means as an initial value, and when the carry signal is generated, a programmable counter and a carry signal of the counter to load the latched value back to the initial value. And a flip-flop generated as a transmission clock signal in synchronization with the system clock signal. The microphone sound detector includes: input detection means for generating a high frequency oscillation signal as a detection signal when the level of the microphone input signal is near a predetermined threshold; And a transmission gate for transmitting the square wave signal in response to a control signal, and the control unit sets the coloring time of each character of each song lyrics in response to the time of the beat, and controls the transmission gate for the coloring time of each character set. The input level of the square wave signal input by controlling the signal is sampled a predetermined number of times, and it is checked whether there is at least one low level sampling during the coloring of one character, and when the song accompaniment is completed, the low level sampling for the total number of characters is performed. On-screen signal is output as a result of scoring the ratio of the number of characters present The.

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

The compact disc for accommodating a video song of the present invention (hereinafter referred to as a CD-OK disc) has a lead-in area LIA, a program area PMA, and a lead-out area LOA as in the case of a conventional CD-DA disc. 1 shows the data structure of a Q channel in LIA. The 98-bit Q-channel data structure consisting of the second channel bits of the nine channels of P, Q, R, S, T, U, V, and W of 98 frames consists of 96 bits except the first 2 bits of sync bit (12). do. There are four bits of control bits 14 and four bits of address bits 16 followed by 72 bits of data bits. The data bits include an 8-bit track number code 18, an 8-bit pointer 20, a 24-bit address (minutes, seconds, and frames) 22, an 8-bit interval bit (24), and 24 bits. Is composed of pointer addresses (PMIN, PSEC, PFRAME) 26. Next to the data bit is a 16-bit CRC code 28. In LIA, the track number code (TNO) of the Q channel is 0 decimal. In the LIA, the contents of the contents recorded on the disk, that is, the contents table (TOC) are recorded. The TOC is composed of a pointer 20 and a pointer address 26 of the Q channel. The pointer address 26 represents the minute, second, and frame value of the start point of each track of the PMA having a specific track number.

2 shows an example of a TOC according to the present invention. When the pointer value is 01h, the minute, second, and frame data indicate the start address of the first track of the program area. When the pointer value is A0h, PMIN indicates the first track number in the program area. When the pointer value is A1h, PMIN indicates the last track number in the program area. When pointer value A2h, minute, second and frame data indicate starting address of LOA. Therefore, as described above, the TOC configuration of the present invention has one track number and the values of the pointers A0h and A1h are the same. On CD-ROM disks, all A0h minute and second frame values are zero. You can read this value to determine whether it is a CD or CD-ROM.

Referring to FIG. 3, the program area PMA of an embodiment according to the present invention is largely divided into a disc label area 30, a disc description area 32, a first table area 34 and a second table of a CD-ROM. The region 36 includes a first data region 38 and a second data region 40. At least one CD-DA track may be included between the second data area 40 and the LOA. In this case, a pointer and an address of this track are additionally set in the TOC. Here, the disc label area 10 adopts the ISO 9660 format that defines the well-known CD-ROM format.

Referring to FIG. 4, the disc description area 32 has a predetermined time interval, that is, an absolute address, as a start address A from a start frame of 00 minutes 00 seconds, which is a start address of the program area PMA. VERSION XX 'Disc identification and version number are recorded in ASCii code. The disc description area 32 is composed of two sectors in mode 1 of the CD-ROM format.

Referring to FIG. 5, the first table area 34 includes index numbers, start addresses, and feature information (group start and continuous information) of each background information of the first data area 38 in which thousands of background information are recorded. A background image index table composed of the < RTI ID = 0.0 > 1 < / RTI > background index table has a starting address B of FIG. It consists of a start address 44 of each background screen information consisting of, and feature information 46 of 1 byte. The one-byte feature information 46 includes background information such as mountain, sea, forest, person 1, person 2, building, harbor, ship, car, train flower, bird, animal, sky, night view, foreground,. For example, 00h indicates the start of an image group and 01h indicates an image group sequence. Therefore, for example, if the required number of sectors in the background address table for indexing 4000 still images is calculated,

(6 bytes * 4,000 wallpaper information) / 2048 = 11.78 sectors

Therefore, 12 sectors are required for the mode 1 sector.

The first data area 38 has a start address D and is a region in which a plurality of background screen information is sequentially recorded in the index number order. As shown in Fig. 6, each background information is composed of two bytes of pixel information 48 having a start bit of 15 bits and a RGB555 code of 15 bits, a continuous bit of 15 bits, and a run length code of 15 bits. It is still dot information of 360 dots * 240 lines compressed with the run length information 50 of 2 bytes. Therefore, the background information takes (360 * 240 * 2) /2048=84.37 sectors when coding with RGB555, but when runlength coding, it is compressed to about 40 sectors in case of naturalization, and greatly compressed for graphic screens. It is compressed to about 5 sectors. Therefore, 400 megabytes is required for recording 4000 naturalized images. Referring to FIG. 7, each background screen information includes a header 52, a body 54 composed of compressed background data, and a taylor 56 indicating the end of each background screen information. The header 52 includes a 'CD-OK' indication, a pointer XX indicating the start position of the body 54 and a pointer YY indicating the start position of the taylor 56.

Referring to FIG. 8, the second table area 36 includes a music index table including an index number 58, start addresses 60, and feature information 62 of respective music information of the second data area 40. In this configuration, the music address has a start address C, a start address 60 of music information composed of a 2-byte index number 58, a 1-byte minute, a 1-second second, and a 1-byte frame. It consists of feature information 62 of each music information. The feature information 62 is identification information according to the type of music information. For example, as shown in FIG. 9, the feature information 62 displays the upper 4 bits of the 1 byte as the BCD code, indicating that 0 is not flexible, and 1 to 7 (column direction) are the rhythm of the flexible. Indicates the type. The lower 4 bits are indicated by the BCD code. If the upper digit is 0, 2 to 8 (low direction) indicate the genre type, and if the value is not 0, it indicates the age of the song. The second table area 36 is a mode 1 sector similar to the first table area 34 and has a size of 12 sectors.

Referring to FIG. 10, the second data area 40 has a start address E and thousands of pieces of music information are recorded in index number order. For each piece of music information, each start address is assigned to the second table area 36. ) Is largely comprised of a header 64, a body 66 and a taylor 68. The body 66 includes accompaniment data 70 having a MIDI format, lyrics data 72 and a background screen order table 74. In the header 64, a pointer WW indicating CDOK 'identification information and the start of the body 66, a pointer XX indicating the start of the character data 72, and a pointer YY indicating the start of the background screen order table 74 are shown. And a pointer ZZ that designates the beginning of the taylor 68. The background screen order table is composed of group information of the background screens according to a preset display order of the background screens of the music when the accompaniment data is output. Here, the group information of the background screens according to the preset display order is prepared to be edited into screens that match the image or mood of the music.

A method of reproducing a disc recording medium having such a signal format will be described below with reference to FIG.

The method for reproducing a disc recording medium of the present invention reads the disc content table TOC from the lead-in area LIA of the CD-OK disc at the beginning of reproduction, obtains the start address 0 of the program area PMA, and starts the start. Starting addresses C and D of the first and second table areas 34 and 36 are found from the address 0, and the background index table 35 and the music index table 37 are read from the disc. For example, when the user selects No. 1, the address M1 of the music index 0001 corresponding to No. 1 is read from the music index table 37 to start the address M1 from the second data area 40 of the disc. The music information 63 having the address is read. The display order (G3-G1-G2-G3-G2-G1) of the background screen is referred to from the background screen order table 74 by the pointer value YY from the header 64 of the music information 63 that is read. The starting address of the wallpaper indexes (0010-0001-0005-0011-0006-0002) corresponding to this order is referred to the wallpaper index table 35, and the referenced addresses V10-V1-V5-V11-V6-V2 are referred to. Background image information having a start address) is sequentially read from the first data area 38 of the disc. Lyric data (W1-W2-W3… WN) corresponding to background information (P1-P2-P3-P4-P5-P6) corresponding to accompaniment data (U1-U2-U3… UN) of music information 63 ) Will be nested and printed.

The configuration of a preferred embodiment of the CD-OK reproducing apparatus for reproducing the CD-OK disc and the CD-ROM disc of the present invention as described above is as follows.

FIG. 12 shows the set front face of the CD-OK reproducing apparatus, and FIG. 13 shows the key arrangement of the CD-OK dedicated remote control apparatus. The apparatus of FIG. 12 employs a five CD changer method. 76 is the power switch, 78 is the disc tray, 80 is the disc select switch, 82 is the tray open / close switch, 84 is the pitch step display, 86 is the pitch up / down switch, 88 is the tempo step display, 90 is the tempo up / down Switch, 92 is the microphone input terminal, 94 is the microphone volume control knob, 96 is the digital echo control knob, 98 is the disc changer selection position display, 100 is the reserved music display, 102 is the selection song number display, and 104 is the function display lamp. These are audio CD display lamps, CD-OK display lamps, melody display lamps, and reservation continuous display lamps. 106 is a remote control receiving window, 108 is ten keys, and 110 is function keys. Function keys include reservation key, confirmation key, cancel key, menu key, melody key, continuous key, play key, stop key, and selection up / down keys. The remote control apparatus of FIG. 13 has an upper remote control transmission window 112 and is indicated by the same reference numeral because it has keys corresponding to switches and keys provided in the front part of the above-described set. On the back of the set, not shown, a video input terminal, a video output terminal, an audio output terminal, and a connector for connecting a personal computer are installed.

14 shows a block diagram of the internal circuit diagram of the set. The structure of the playback apparatus of the present invention is largely divided into a CD playback section, a CD-OK playback section, and a CD-ROM interface section. The CD playback unit includes a spindle motor 116 for rotating the disk 114, an optical pickup 118, an RF amplifier 120, a servo controller 121, a digital signal processor 122, a main controller 124, and a sub controller. 126, disc deck drive unit 128, display unit 130, command input unit 132, digital analog converter 134, audio signal selector 136, audio output amplifier 138, audio output terminal 140 It includes.

The CD-OK playback unit includes a second buffer 144, a controller 146, a system memory unit 148, a control signal generator 149, a media data transmitter 150, a sound source processor 152, an audio converter ( 154, digital echo processing unit 155, audio input amplifier 156, microphone sound input terminal 158, microphone sound detection unit 160, video memory unit 162, image conversion unit 164, superimposing means 166, synchronous signal generator 168, synchronous detector 170, video input amplifier 172, video selector 174, video output amplifier 176, video input terminal 178, video output terminal 180 ).

The CD-ROM interface unit includes a CD-ROM decoder 142, a first buffer 112, and a personal computer adapter 110.

Main controller 124 controls the switching of audio selector 136 and video selector 174. In addition, the main controller 124 generates a selection control signal BC of the first buffer 144 of the CD-ROM interface unit and the second buffer 144 of the CD-ROM reproducing unit in response to the disc discrimination result. The VS signal is a switching control signal of the video selector. 182 is a compact disc graphics decoder.

A personal computer is connected to the connector of the set, a speaker is connected to the audio output terminal 140, a television receiver or a monitor is connected to the video output terminal 180, and the power control key of the sub-control unit 126 is in a standby state. (76) It is checked whether there is an input, and if there is an input of the power key 76, the main power is supplied to the circuit portion under the control of the main controller 124. Subsequently, when the system initialization command of the main control unit 124 is transmitted to the control unit 146, the control unit 146 protrudes the initial screen information from the system memory unit 146 to display the initial display screen. On the other hand, the main control unit 124 controls the disc deck unit 128 through the sub-control unit 126 to check the presence or absence of the disc in the disk tray of the five CD changer method, and if there is no disc, the music number display unit 102 ) To disc. When the user presses the close / open switch 82, the sub-control unit 126 displays open through the music number display unit 102 and opens the tray 78. On the other hand, the open command is transmitted to the control unit 146 through the main control unit 124, the control unit 146 performs an on-screen display that the door is opened on the initial screen. When the user puts the disc on the tray and pushes the tray or presses the close / open switch 82, the sub-control unit 126 closes the tray 78 through the disc deck 128 and gives the number of the disc position. It is displayed on the position display part 98. The main controller 124 reads the content table from the lead-in area of the disc through the optical pickup 118 and determines the type of the disc. If the disc is an audio disc or a graphic disc, the CD display lamp of the disc display lamp 104 is turned on and the total number of songs is displayed on the song number display section 102. The main controller 124 switches the audio and video selectors 136 and 166 to the CD mode, and the controller 146 displays a blue screen instead of the initial screen. When the user presses the music selection up / down key or the playback key, the selected music number and the disk rotation state are displayed on the music number display unit 102 and a playback operation is performed to output a playback audio signal.

If the disc is a CD, the audio data is reproduced as an audio signal through the converter 134 and applied to the speaker connected to the audio output terminal 140 through the audio selector 136 and reproduced through the digital signal processor 122. The graphic data of the code is output as a video signal through the CD decoder 182, which is applied to a monitor or television receiver connected to the video output terminal 180 through the video selector 174 to be displayed.

When the user presses the disk select switch 80 to use the CD, the initial screen displays the on-screen text that the disk is being replaced. If the replaced disk is a CD disc, the CD indicator lamp 104 is turned on and the reserved music number display unit 100 and the song number display unit 102 are displayed as 0 and 0. As shown in FIG. Then, in the main control unit 124, the switching position of the audio selector 136 and the video selector 166 is switched to the CD position (shown in FIG. 14) and generates a selection control signal BS when the CD is a CD. The second buffer 144 is controlled to be enabled and the first buffer 142 is controlled to be disabled. Then, the control unit 146 transmits the start address information of the first and second table areas programmed in the system to the main control unit 124, and the main control unit 124 transmits the background image index table from the disk according to the address information. The information and the music index table information are read and the read table information is transmitted to the controller 146 through the CD-ROM decoder 142. The control unit 146 stores the transmitted table information in the system memory unit 148 in a CD format and displays a CD selection screen.

The operation of the CD playback apparatus is as follows.

When the music is selected, the music number display unit 102 displays the music number and the display of 0000 on the screen is displayed as 0001, and the white display is converted into red. If there is no playback key input within the specified time, the display returns to 0000 display state. If there is a play key input within the specified time, the song number is displayed as 0000, the song number is displayed as 0001 at the center of the screen, and the song starts playing.

When the music selection number is transmitted to the control unit 146, the control unit 146 reads the start address information of the song with reference to the music index table, and transmits this information to the main control unit 124. The music information is read from the corresponding address in the data area. The read music information is transmitted to the controller 146 via the CD-ROM decoder 142 as CD-ROM data, and the controller 146 stores the music information in the system memory unit 148 in the CD format of FIG. Then, the start address information of the first background screen is transmitted to the main control unit 124 with reference to the stored wallpaper information table of the music information, and the main control unit 124 reads the background information corresponding to the first data area in the CD-ROM. When transmitted to the controller 146 through the decoder 142, the controller 146 performs run length decoding on the transmitted background information and stores the decoded background data in the video memory unit 162. By this operation, the video memory unit 162 is stored. When two pieces of background information are stored in the video memory unit 162 by this operation, the controller 146 controls the on-screen display of the song title, writer, composer, and singer from the lyrics data among the music information stored in the system memory unit 148. The data is read and superimposed on the first background image to be reproduced and output as a video signal through the NTST encoder 164 and the superimposing means 166, and the video signal is connected to the video output terminal 180 through the video selector 174. It is displayed on a television receiver or a monitor. The controller 146 reads the MIDI data from the music information of the system memory unit 148 and transmits the MIDI data to the sound source processing unit 152 through the MIDI data transmission unit 150. The sound source processor 152 reproduces the sound according to the transmitted video data and supplies the sound to the speaker connected to the audio output terminal 140 through the audio selector 136. Therefore, the electric pole is laid out by this operation, and the title, song, composition, and song are displayed on the first background screen, and one or two preset pole screens are displayed one after another in synchronization with the previous pole. The lyrics and song start countdown indicators appear. If it counts down to 3-2-1-0 and goes to zero, the lyrics start coloring and the first half begins. At the end of the first half of the week, three or four screens are displayed. When the second half of the race proceeds and ends, the race screen is displayed in synchronization with the race. When the finish is completed, the score screen is displayed.

If the selected disk is a CD-ROM disk, the main control unit 124 generates a selection control signal BS to enable the first buffer 112 and disable the second buffer 144 so that the CD-ROM decoder 142 may use the adapter ( Data transmission and reception is performed with the personal computer connected to the connector 11 of 110. Then, the CD-ROM display lamp of the display section 104 lights up, and the music selection number display section 102 displays ROM.

As described above, in the CDoq device which is a video song accompaniment device of the present invention, not only can a video song accompaniment be used but also can be used as a CD-ROM driver, so that a CD-ROM disc can be played and user's convenience can be achieved.

In addition, various types of CDs can be reproduced by combining audio CDs and graphic CDs.

Claims (3)

CD playback means for reading data from the compact disc and outputting audio signals and digital data; A command input unit for inputting a command signal; A display unit for displaying an operating state of the system; A CD-ROM decoder for generating CD-ROM data by inputting digital data outputted to the CD reproducing unit; A CD-oI playback unit for receiving the CD-ROM data from the CD-ROM decoder to generate an accompaniment signal of selected music and a background image signal composed of a plurality of still images suitable for the song lyrics of the music; A CD-ROM interface unit for connecting the CD-ROM decoder to a personal computer; An audio selector for selecting an audio signal of the cd reproducer or an accompaniment signal of the cd reproducer and outputting the audio signal to an audio output terminal; A video selector for selectively outputting a background screen signal of the CD playback unit to a video output terminal; And According to the command of the command input unit and the address information from the CD playback unit, an operation state is displayed on the display unit, the CD playback unit is controlled to control the data selected from the disc to be read, and the type of the disc is determined to determine the audio. And controlling means for controlling the signal selection of the selector and the video selector, and selectively controlling the CDROM data input enable state of the CD playback unit and the CD ROM interface unit. Device. The method of claim 1, The CD decoder may include: a second buffer configured to interface with the CD ROM decoder in response to the control of the control unit; A system memory unit configured to store CD-ROM data supplied from the CD-ROM decoder through the second buffer in a CD-Oike format; A MIDI data transmitter for transmitting the MIDI data of the system memory unit; A sound source processor for generating accompaniment sound data according to the MIDI data; A converter for converting the generated accompaniment data into an accompaniment signal and supplying the accompaniment signal; A microphone sound detector for detecting a microphone sound; A video memory unit for storing background image data in which lyrics data of the system memory unit is superimposed; An encoder for encoding the background signal read out from the video memory unit into a television signal; Superimposing means for superimposing the television signal and the external video signal of the encoder and supplying a background screen signal to the video selector; A sync separator for separating an external sync signal from an external video signal; A synchronization signal generator for generating an internal synchronization signal by dividing a clock signal, generating an internal synchronization signal synchronized with an external synchronization signal, and generating a screen refresh address signal of the video memory unit when the external synchronization signal is input; A control signal generator for generating the control signal and the timing signal of each unit; And The CD-ROM data is input through the interface means, and the input CD-ROM data is formed into a CD-O-K format, stored in the system memory unit and the video memory unit, and the address information and the background of the music information selected in response to the selected song number and the given command signal. And a CD-ROM driver combined compact disc video song accompaniment apparatus comprising: a control unit for providing address information of a screen to the control unit through a CD-ROM decoder. The method of claim 1, The CD-ROM interface unit may include: a first buffer configured to interface with a CD-ROM decoder in response to the control of the control unit; A connector to which a personal computer is connected; And an adapter for interfacing between the connector and the first buffer to transmit a signal between the personal computer and the playback device.