KR200172298Y1 - Cd player with multi cd-roms being able to interface computer - Google Patents

Abstract

The present invention is a computer that enables the player to perform the functions of a CD-ROM drive, a computer peripheral device, through an interface between a multi-type CD player and a computer that can perform functions of various commercially available CD products on one set. The present invention relates to a multi-CD player with built-in CD-ROM interface. The present invention has an effect that a CD-ROM is embedded in a multi-type CD player, and a computer can control the MPEG decoder embedded in a multi-type CD player with a CD-ROM, thereby decoding CD-ROM data without a separate MPEG board. In addition, there is an advantage that it is easy to exchange data between the computer and the multi-type CD player.

Description

Multi-type CD player with built-in CD-ROM which can interface with computer

1 is a block diagram showing a conventional CD-ROM built-in video CD player.

2 is a block diagram showing a multi-CD player with a built-in CD-ROM capable of interfacing with a computer according to a preferred embodiment of the present invention.

3 is an external view of the multi-type CD player of FIG.

4 is a diagram showing a connection relationship between the multi-type CD player of FIG. 2 and an external device;

* Explanation of symbols for main parts of the drawings

31: disc 32: pickup

33: servo unit 34: microprocessor

35 operation part / display part 36 amplification part

37: CDP decoder 38: CD-ROM decoder

39: MPEG Decoder 40: Photo CD Decoder

41: CDG decoder 42: video control unit

43: ADPCM decoder 44, 45: D / A converter

46: CD-ROM interface unit 47: function interface unit

48: CD-ROM interface control unit 49: function interface control unit

50: overlay control unit

The present invention relates to a multi-type CD player that plays a combination of a video CD, photo CD, CDG, audio CD, etc. More specifically, the CD-ROM is built into the multi-type CD player, the desired function by the interface with a computer The present invention relates to a multi-type CD player with a built-in CD-ROM capable of interfacing with a computer that can operate as a device.

Nowadays, multimedia devices capable of performing a combination of functions of multiple products on one set have been proposed. In other words, CD-related products (for example, CDG player, CD player, ...) mechanisms, such as optical system, servo system, etc. are similar to each other, so that they can be integrated and performed on one set. For example, FIG. 1 shows a CD-ROM built-in video CD player.

FIG. 1 is a block diagram showing a conventional CD-ROM built-in video CD player, which is interconnected via an interface cable to perform an interface between the computer 1 and the CD-ROM drive 23 built in the video CD player 2. have. Here, the CD-ROM built-in video CD player 2 performs a corresponding function when the user selects the video CD player through the operation unit 21. Then, the situation being performed is displayed on the display unit 21. On the other hand, when the user selects the CD-ROM through the CD-ROM interface card 11 of the computer 1, the data is read from the CD-ROM drive 23 and transferred to the computer 1. In the former case, the data is read out through the CD-ROM drive 23 under the control of the microcontroller 22. The read data is decoded by the MPEG decoder 25 according to the MPEG standard, and the video data of the decoded data is signal-processed by the video controller 24. The video controller 24 processes the video data to be displayed on the TV receiver, and the first D / A converter 26 digitally converts the processed video data to the TV side. The audio data of the decoded data is digital-analog-converted by the 2D / A converter 27 and then amplified to a certain size and transmitted through a speaker, and the sound card of the computer 1 connected through an audio cable ( 12) Here, overall control of the CD-ROM drive 23 is performed by the computer 1 through the CD-ROM interface card 11 of the computer 1.

However, in the case where the computer 1 uses CD-ROM data decoded in the video CD player, a separate MPEG board must be attached to the computer 1. That is, in windows, commands such as "play, stop, pause, seek, ..." are defined as MCI called MCI MPEG. In order to implement these commands, the MPEG decoder needs to be directly controlled. However, in the case of the conventional CD-ROM embedded video CD player, the computer cannot directly control the MPEG decoder. Thus, to support MCI, an MPEG board that can be directly controlled must be provided.

In addition, OM-1 (Open MPEG), the MPEG MCI command of the window has a problem that does not consider the overlay at all, because the processing and overlay of MPEG should be controlled as one device.

Here, the MCI (Media Control Interface) is a standard control interface for a multimedia device or a file. The use of MCI enables a multimedia application program to control various types of multimedia devices and files.

Accordingly, an object of the present invention is to solve the above-mentioned problems and to play a CD-ROM drive, which is a computer peripheral, in a multi-type CD player that can play various optical discs such as video CD, CDG, audio CD, photo CD, etc. It provides a multi-CD player with built-in CD-ROM that can interface with a computer so that all playback can be controlled through a computer so that a separate MPEG board is not required.

In order to achieve the above object, a multi-type CD player with a built-in CD-ROM capable of interfacing with a computer of the present invention is a multi-type CD player capable of performing functions of a plurality of CD-type products, for selecting a product to be used. A player capable of performing a function of the operation unit and the product selected by the operation unit, embedding the CD-ROM, and outputting the CD-ROM data and data applied from the computer to the computer via MPEG interface; And a computer connected to the player to control the player.

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

2 is a block diagram showing a multi-CD player with a built-in CD-ROM capable of interfacing with a computer according to the present invention. As shown, Fig. 2 (a) is a CD-ROM embedded multi-type CD player of the present invention, and Fig. 2 (b) is an interface portion on a computer for interfacing with a CD-ROM embedded multi-type CD player. First, the multi-type CD player with a built-in CD-ROM shown in FIG. 2 (a) is designed to amplify the disc 31, the pickup unit 32 for reading data from the disc 31, and the read data to a predetermined size. An amplifying unit 36 and a servo unit 33 are provided. The amplifier 36 is connected to a CDP decoder 37 for error correction and decoding at a CDP level, and a CD-ROM decoder 38 for error correction and decoding at a CD-ROM level. . The CD-ROM decoder 38 includes an MPEG decoder 39 for decoding the decoded data according to the MPEG standard, a photo CD decoder 40 for decoding according to the Photo CD standard, and a CDG for decoding according to the CDG standard. Decoder 41 is connected. The MPEG decoder 39, the Photo CD decoder 40, and the CDG decoder 41 are connected to a video controller 42 for controlling signal processing for video data among decoded data, respectively. The CDP decoder 37 and the CD-ROM decoder 38 also receive audio data of the data decoded by the CDP decoder 37 and output them as they are, and in the form of an ADPCM form of the data decoded by the CD-ROM decoder 38. An ADPCM decoder 43 for decoding and outputting audio data into PCM type audio data is connected. In the MPEG decoder 39, the photo CD decoder 40, and the CDG decoder 41, digital analog conversion of the video data decoded according to the MPEG standard and the video data decoded according to the port CD standard and the video data decoded according to the CDG standard are performed. And a first D / A converter 44 for outputting a composite disc signal that can be displayed on a TV receiver and a super video signal having excellent image quality. A second D / A converter 45 for digitally analog converting audio data is connected between the ADPCM decoder 43 and the MPEG decoder 39. On the other hand, operation buttons such as selection of playable CDs and operation buttons for displaying the selected product, or a control unit / display unit 35 with a remote control unit, and a microprocessor 34 for controlling the overall operation of each component by interconnecting with each component. And a CD-ROM interface 46 and a function interface 47 for interfacing with a computer. In this case, for the interface, a standard interface (Small Computer System Interface) is used. In addition, there are an Industry Standard Architecture (ISA) bus and an IDE.

On the other hand, the interface portion of the computer shown in FIG. 2 (b) is included in a specific connector, and the CD-ROM interface 46 for interfacing between the computer and the CD-ROM drive embedded in the multi-type CD player. The connected CD-ROM interface control unit 48, the function interface control unit 49 connected to the function interface unit 47 for controlling the MPEG decoder 39 included in the multi-type CD player, and the VGA from the computer's VGA card. It is configured to include an overlay control unit 50 for receiving the signal and the video signal of the multi-type CD player to overlay and display on the monitor. Here, the CD-ROM interface may be any existing interface such as SCSI, but must be designed to match between a computer and a CD-ROM built-in multi-type CD player.

3 is a diagram showing the appearance of the multi-type CD player of FIG. 3 (a) is a front view of the set, and a display unit for displaying a selected product function through a remote controller or an operation button so that a user can know, and one of a plurality of product functions such as CD, CD-ROM, photo CD, CDG, etc. is selected. An operation button portion, a remote control signal receiver, and a door for inserting a CD are located. 3 (b) is a rear view of the set, a CD-ROM interface connector for interfacing with a CD-ROM drive (Stand Alone type) and a computer, and a functional connector connected with a specific connector of the computer to control the MPEG decoder section. The video jacks for connecting to the super video line terminal on the TV side, and the video and audio L and R jacks for connecting to the video and audio line terminals on the TV side are located.

4 is a diagram illustrating a connection relationship between the multi-type CD player of FIG. 2 and an external device. In the multi-type CD player of the present invention, an audio and video cable is connected to a TV, and an audio cable is connected to a computer sound card, and an interface card, a video interface, and a CD-ROM are connected to a computer. The interface cable is connected. The computer's interface card is also connected to the VGA card through a specific connector, which displays the video signal on the monitor.

The operation of the CD-ROM built-in multi-type CD player capable of interfacing with the computer of the present invention configured as described above will be described in more detail.

First, in the multi-type CD player with built-in CD-ROM shown in FIG. 2 (a), when the user selects one of a plurality of product functions through the operation unit 35 which is a remote control or an operation button attached to the device, this key input is performed. Recognizing the microprocessor 34 controls the operations of each component to perform the selected product function. Of course, commands corresponding to key input of the operation unit 35 may be recognized by the microprocessor 34 through an interface with a computer. The microprocessor 34 also displays the selected product on the display unit 35 so that the user can recognize it. If a user wants to play a CD (video, CD, CDG, photo CD, audio CD…) to watch a desired video or listen to audio, the pickup unit 32 operates to rotate the disk 31 at a predetermined speed. The laser beam is emitted to the corresponding area to convert the returned beam into an electrical signal and output a high frequency signal RF. In addition, the servo unit 33 that controls the servo operation of the pickup unit 32 performs the servo under the control of the microprocessor 34. The amplifier 36 amplifies the high frequency signal RF to a predetermined size and inputs it to the CDP decoder 37. The CDP decoder 37 detects an error in the input signal, corrects the error, decodes it, and outputs it. If the inserted and reproduced disc is an audio CD, the audio data decoded by the CDP decoder 37 is decoded by the ADPCM decoder 43 and then digitally converted by the 2D / A converter 45 and transmitted to the speaker. . On the other hand, when the disc to be played is a CD-ROM, the data decoded by the CDP decoder 37 is input to the CD-ROM decoder 38. The CD-ROM decoder 38 performs error correction on the data decoded by the CDP decoder 37 and then decodes and outputs the data.

The data decoded by the CD-ROM decoder 38 is output to a computer through the CD-ROM interface unit 46. In the case where the input CD is a video CD, the MPEG decoder 39 decodes the data decoded by the CD-ROM decoder 38 in accordance with the MPEG standard and then converts it into an analog signal by the first D / A converter 44. The MPEG decoder 39 also receives data in the form of a file that requires MPEG processing through a function interface unit 47 connected to a computer, and decodes it in accordance with MPEG standards. At this time, the microprocessor 34 receives the necessary commands through the function interface unit 47, and controls accordingly for each component. The first D / A converter 44 outputs video data of MPEG decoded data as a composite video signal and a super video signal. The 2D / A converter 45 performs digital analog conversion on the audio data of the MPEG decoded data and outputs it. When the selected device is a photo CD, the photo CD decoder 40 restores the video data decoded by the CD-ROM decoder 38 to the image data by the photo CD video format, and then the first D / A converter 44. Convert to analog signal at. When the disc to be reproduced is a CDG, the CDG decoder 41 receives a sub-code from the CDP decoder 37 to reproduce the CDG, and then converts the CDG into an analog signal by the first D / A converter 44. The first D / A converter 44 outputs through an external TV side terminal or a video terminal connected to a computer.

The composite video signal and the super video signal played by the multi-CD player with built-in CD-ROM are output to the TV connected to the video jacks (Video Composite and Video Super) shown in FIG. It is displayed on the receiver. In addition, an audio signal Audio is also output to the TV side connected to the audio L and R jacks shown in FIG. 3 (b) and transmitted through the TV speaker. Meanwhile, the audio signal may be output to the sound card of the computer through an audio cable connected to the computer. Of course, the video signal (Video) is also output to the overlay controller 50 through the video terminal (Video In) shown in FIG. 2 (b), and is overlaid with the VGA signal output from the VGA card and displayed on the computer monitor. .

As described above, the present invention relates to a multi-type CD player with a built-in CD-ROM capable of interfacing with a computer. The products of CD-like products such as video CD, audio CD, CDG, and photo CD are commercially available on one set. Built-in multi-player CD player with built-in CD-ROM drive, which is a computer peripheral device, can control MPEG without installing a separate MPEG board in the computer through the interface with the computer. It has the effect of easily sending and receiving data.

Claims (6)

In the multi-type CD player that can perform the functions of a number of CD products, An operation unit for selecting a product to be used; A player which performs a function of the product selected by the operation unit, embeds a CD-ROM, and outputs the CD-ROM data and data applied from the computer to the computer by MPEG processing through an interface with the computer; And A multi-type CD player with a built-in CD-ROM capable of interfacing with a computer including a computer connected to the player and controlling the player. The multi-type CD player with a built-in CD-ROM according to claim 1, wherein the operation unit selects a product function through an operation button provided on the player or a remote controller or the computer. The CD-ROM embedded multi-type CD player as claimed in claim 1, wherein the operation unit further comprises a display unit for displaying a selected function so that a user can know. 4. The apparatus of claim 2 or 3, wherein the player further comprises: a microprocessor for controlling the operation of each component such that a selected function is performed through the operation unit; disk; A pickup unit for reading data from the disc; An amplifier for amplifying the data read through the pickup unit to a predetermined size; A servo unit for controlling the servo operation of the pickup unit; A CDP decoder which detects an error of data amplified to a predetermined size in the amplifier, corrects the error, decodes the output, and outputs the result; A CD-ROM decoder for error correction, decoding and outputting the data decoded by the CDP decoder when the disc is a CD-ROM; An MPEG decoder which decodes the data decoded by the CD-ROM decoder and the data supplied from the computer in accordance with MPEG standards when the disc is a video CD; A photo CD decoder which decodes video data among data decoded by the CD-ROM decoder according to a specific video format of the photo CD, and performs necessary signal processing; A CDG decoder for reproducing the CDG through a subcode applied from the CDP decoder when the disc is a CDG; A video controller configured to control video signal processing of the MPEG decoder, the photo CD decoder, and the CDG decoder; An ADPCM decoder for decoding and outputting audio data decoded by the CDP decoder and audio data decoded by the CD-ROM decoder from ADPCM type to PCM type; The MPEG decoder; A first D / A converter for digitally converting the video data decoded by the photo CD decoder and the CDG decoder and outputting the composite video signal and the super video signal; A second D / A converter for digitally analog converting and outputting audio data decoded by the MPEG decoder and the ADPCM decoder; A function interface unit for receiving MPEG processing data and corresponding instructions from the computer and supplying the data to the MPEG decoder and the microprocessor; And A multi-type CD player with a built-in CD-ROM capable of interfacing with a computer, comprising a CD-ROM interface for interfacing with the computer for performing a function of a CD-ROM product. The apparatus of claim 4, wherein the computer comprises: a sound card for receiving and processing an audio signal supplied from the player; VGA card: and CD-ROM interface control unit for interface with the CD-ROM interface unit, a function interface control unit for the interface with the function interface unit, an overlay for receiving the video signal and the VGA signal of the VGA card and overlay and output to the monitor A multi-type CD player with a built-in CD-ROM capable of interfacing with a computer, characterized by comprising an interface card of a specific connector having a control unit. 6. The multi-type CD player with built-in CD-ROM according to claim 5, wherein the interface card uses a SCSI standard interface.