KR20000001194A - Optical disk replaying system - Google Patents

Abstract

PURPOSE: An optical disk replaying system is provided to easily develop even if a Moving Picture Experts Group(MPEG) data treating technique is inferior. CONSTITUTION: An optical disk replaying system comprises: an optical disk loading board(130) containing an optical pick-up unit(110), a Radio Frequency(RF) amplifying unit(112), a data treating unit(116), a servomechanism(114), a first microprocessor(118), a key inputting unit(112), a displaying unit(120), a data interface(140), and an order interface(142); and an MPEG board(150) containing an MPEG decoder(152), a video encoder(154), a second microprocessor(156), and an audio Digital to Analog Converter(DAC)(158).

Description

Optical disc playback system

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an optical disc playback system such as a compact disc player (CDP) / digital versatile disc (DVD) player. In particular, it is easy to develop an optical disc playback system even if the technical skills are insufficient. The present invention relates to an optical disc reproducing system.

In general, an optical disc reproducing system for reproducing data recorded on an optical disc largely includes an optical disc loading unit, a moving picture expert group (MPEG) data processing unit, and a key input unit. Here, the optical disk loading unit digitally processes an RF (Radio Frequency) signal obtained by irradiating light from the light source to the optical disk and picking up the reflected light under the control of the system controller. Restores the data recorded in the The MPEG data processing unit decodes the data restored by the optical disc loading unit under the control of the system controller, encodes the video signal, outputs the video signal to the video output terminal, and converts the audio signal to digital to analog conversion (DAC). To the audio output terminal. The key input unit allows the user to input a key from the outside to control the system according to the user's convenience.

As described above, in order for a company to develop an optical disc reproducing system, technology for reproducing recorded data, MPEG data processing technology for MPEG data processing, and key control technology are basically required. In other words, companies developing optical disc reproducing systems can only develop their own technology if they have the technology for all of them.

Here, the technology for the key input unit is not a very difficult field, but requires a very specialized technology to implement the optical disk loading unit or MPEC data processing unit. Therefore, in the case of a company that lacks the technical expertise of either the optical disc loading unit or the MPEC data processing unit, it is difficult to develop such an optical disc reproducing system and also requires a long technical development time, which makes the system development difficult. Will occur.

An object of the present invention is to provide an optical disc reproducing system that can easily develop an optical disc reproducing system even if there is a lack of an optical disc loading technique for reproducing data recorded on an optical disc or an MPEG data processing technique for processing MPEG data. There is.

Another technical problem to be achieved by the present invention is to provide another optical disk reproducing system that is easy to develop.

1 is a schematic block diagram of an embodiment for explaining an optical disc reproducing system according to the present invention.

Figure 2 is a block diagram of one schematic embodiment for explaining another optical disc reproducing system according to the present invention.

In order to achieve the above object, an optical disc reproducing system according to the present invention for reproducing data recorded on an optical disc includes a first control unit, and recorded on the optical disc in accordance with the control of the first control unit and a command input from the outside. Restoring data and performing error correction, displaying an operating state of the current system to the outside, an optical disc loading including a command interface connected to the first control unit to input / output a command and a data interface to output error corrected data And a second control unit connected to the board and the command interface, input necessary data from the data interface corresponding to a command input / output from / to the second control unit, and process the input data as MPEG data, respectively. It is preferable to include the MPEG board to output.

In order to achieve the above another object, an optical disc reproducing system according to the present invention for reproducing data recorded on an optical disc includes a first control unit, and restores and errors data recorded on the optical disc under the control of the first control unit. An optical disc loading board including a data interface for correcting and outputting error-corrected data, a command interface and a key interface connected to the first control unit to input / output a command, and a second control unit connected to the command interface; A third board connected to an MPEG board and a key interface that input necessary data from a data interface corresponding to a command input / output from / to a second control unit, process the input data into MPEG data, and output the video data as audio and video data, respectively; And a controller, and controls the current operation state according to the control of the third controller. Display portion, and it is preferable that through a third control command to be input from an external input including a key board, delivered to the first controller.

Hereinafter, an optical disc reproducing system according to the present invention will be described with reference to the accompanying drawings.

1 is a schematic block diagram of an embodiment for explaining an optical disc reproducing system according to the present invention. An optical disc reproducing system according to an embodiment of the present invention includes an optical pickup unit 110, an RF amplifier 112, a data processor 116, a servo 114, a first microprocessor 118, and a key input unit 112. , The optical disc loading board 130 including the display unit 120, the data interface 140, and the command interface 142, the MPEG decoder 152, the video encoder 154, the second microprocessor 156, and the audio. An MPEG board 150 including a digital to analog convertter (DAC) 158 is included.

Referring to FIG. 1, the optical disc loading board 130 restores data recorded on the optical disc 100. In view of its operation, first, the optical pickup unit 110 irradiates light to the optical disc 100 using a photodiode (not shown) and a photodiode (not shown), and then receives the returned light to photoelectrically convert it. The photoelectrically converted signal is output to the RF amplifier 112. The RF amplifier 112 amplifies and equalizes the analog RF signal output from the optical pickup 110. The data processor 116 inputs an analog signal output from the RF amplifier 112 and converts the analog signal into a digital signal through an internal slicer (not shown), corrects and corrects an error, and stores the analog signal in a memory (not shown). When the MPEG board 150 requests, the data stored in the memory (not shown) is output to the MPEG board 150 through the data interface 140.

The servo 114 detects, amplifies, and corrects error signals such as tracking, focusing, sledding, and spindle detected by the optical pickup unit 110, and outputs them to the optical pickup unit 110 to stabilize the system. To make it work. The first microprocessor 118 controls the overall operation of the optical disc loading board 130, in particular through communication with the optical pickup 110, the servo 114, the data processor 116, and the like. In addition, if the MPEG board 150 requires data stored in a memory (not shown) of the data processing unit 116 through communication with the MPEG board 150 through the command interface 142, the required data is quickly and accurately. The data processor 116 is controlled to be output to 150.

Meanwhile, the first microprocessor 118 controls the data processor 116 when the second microprocessor 156 requests the data processor 116 to output the stored data through the data interface. That is, when the MPEG decoder 152 gives the second microprocessor 156 that the data of the data processor 116 needs the data, the second microprocessor 156 receives the first microprocessor ( 118) and a command to request data. The first microprocessor 118 controls the data processing unit 116 in response to a data request command generated from the second microprocessor 156, and transmits data required by the MPEG decoder 152 through the data interface 140. The MPEG decoder 152 may transmit the result. In addition, the first microprocessor 118 controls the data processor 116 to directly access the data processor 116 and obtain necessary data even without a request from the second microprocessor 156.

The display unit 120 displays the operation state of the optical disc reproducing system to the outside under the control of the first microprocessor 118. The key input unit 122 transmits any command from the outside to the first microprocessor 118 so that the system operates as required by the user.

Next, the MPEG board 150 inputs the data restored from the optical disk loading board 130 to separate and output the video signal and the audio signal through MPEG data processing. Referring to the operation of the MPEG board 150, the second microprocessor 156 communicates with the MPEG board 150 through the command interface 142 and transmits data required by the MPEG decoder 152 to the data processor 116. Get it from That is, under the control of the second microprocessor 156, the MPEG decoder 152 inputs and decodes necessary data from the data processor 130 and outputs the necessary data to the video encoder 154 and the audio DAC 158, respectively. . The video encoder 154 encodes a video signal and outputs it to the video output terminal Vout, and the audio DAC 158 converts the digital audio signal into an analog signal and outputs it to the audio output terminal Aout.

That is, conventionally, by controlling the overall operation of the optical disc reproducing system through a single microprocessor, in order to implement the optical disc reproducing system, both the technique of data reproduction of the optical disc and the technique of MPEG data processing are required. However, in the present invention, the optical disk loading board for reproducing the data recorded on the optical disc and the MPEG board for MPEG data processing are designed according to the function of performing the optical disc reproducing system through each microprocessor. It can be operated.

That is, for example, if a company rich in technology for restoring data recorded on an optical disk provides an optical disk loading board for restoring data recorded on the optical disk and provides a protocol for interfacing with the MPEG board, Although it is difficult to develop an optical disc reproducing system due to the lack of data recovery technology, a company can easily develop an optical disc reproducing system using an optical disc loading board and a protocol. In addition, companies that have abundant technology for restoring data recorded on optical discs but lack MPEG data processing technology can easily develop optical disc playback systems using MPEG boards and protocols provided by companies rich in MPEG data processing technology. .

As a result, the optical disc reproducing system can be more easily developed by separating the optical disc reproducing system into an optical disc loading board for reproducing data recorded on the optical disc and an MPEG board for processing MPEG data.

Meanwhile, the optical disk loading board 130 provides power applied to the MPEG board 150 in the system shown in FIG. 1 to prevent power consumption when the MPEG board 150 is not enabled.

2 is a schematic block diagram of another embodiment for explaining an optical disc reproducing system according to the present invention. Another embodiment of the optical disc reproducing system according to the present invention includes an optical pickup unit 212, an RF amplifier 214, a data processor 218, a servo 216, a first microprocessor 220, and a data interface 222. And an optical disc loading board 210 including a command interface 224 and a key interface 226 and a key input board 240 including a key input unit 240, a display unit 242, and a second microprocessor 244. And an MPEG board 230 including an MPEG decoder 232, a video encoder 232, a third microprocessor 234, and an audio DAC 236.

The optical disc reproducing system shown in FIG. 2 is configured to separate a display unit and a key input unit from the optical disc loading board of the optical disc reproducing system shown in FIG. The optical disk loading board 210 and the key input board 240 communicate with each other via the key interface 226. Here, the description of the optical disc loading board 210 and the MPEG board 230 is the same as the description shown in FIG.

Referring to the operation of the key input board 240, the command input from the outside through the key input unit 246 is transmitted to the second microprocessor 244 and the optical disk loading board 210 through the key interface 226. Is transferred to the first microprocessor 220. The first microprocessor 220 controls the optical disk loading board 210 in response to a command transmitted from the key interface 226, and transmits data required by the key input board 240 through the key interface 226. Transfer to second microprocessor 244. The second microprocessor 226 receives data necessary for display from the key interface 226 to control the display unit 242 to display an operation state of the current optical disc reproducing system.

Meanwhile, as described in the description of the device illustrated in FIG. 1, the first microprocessor 220 may access the data processor 218 to request data that is needed even if no request from the third microprocessor 234 is required. The data processor 116 is controlled to obtain the data directly from the processor 218. Also, if there is data that the second microprocessor 244 needs from the data processor 218, the first microprocessor 220 controls the data processor (218). 218 is directly accessed and passed to the second microprocessor 244 via the key interface 226.

As described above, by controlling the key input board 240 using a separate microprocessor, it is possible to provide an optical disc reproducing system that satisfies various needs of consumers.

As described above, in the present invention, the optical disc reproducing system performs optical disc loading board, key input board and MPEG data processing for reproducing data recorded on the optical disc through each microprocessor according to the function to perform. It is possible to design and operate by ternary MPEG board, and it is easy to design by providing protocol for interface between adjacent boards.

That is, for example, if a company rich in technology for restoring data recorded on an optical disk provides an optical disk loading board for restoring data recorded on the optical disk and provides a protocol for interfacing with the MPEG board, Although it is difficult to develop an optical disc reproducing system due to the lack of data recovery technology, a company can easily develop an optical disc reproducing system using an optical disc loading board and a protocol. In addition, companies that have abundant technology for restoring data recorded on optical discs but lack MPEG data processing technology can easily develop optical disc playback systems using MPEG boards and protocols provided by companies rich in MPEG data processing technology. .

As a result, the optical disc reproducing system can be more easily developed by separating the optical disc reproducing system into an optical disc loading board for reproducing data recorded on the optical disc and an MPEG board for processing MPEG data.

On the other hand, by providing the power supplied to the MPEG board 230 and the key input board 240 from the optical disk loading board 210, when the MPEG board 230 or the loading board 210 is not enabled, power consumption Do not do it.

As described above, the optical disc reproducing system according to the present invention uses a protocol provided to interface with adjacent boards and controllable boards separately separated according to functions such as an optical disc loading board, an MPEG board, and a key input board. In addition, there is an effect that it is possible to easily develop an optical disc reproducing system even if the technique for restoring data recorded on the optical disc or the lack of MPEG data processing techniques.

Claims (9)

An optical disc reproducing system for reproducing data recorded on an optical disc, And a first control unit, restoring and error-correcting data recorded on the optical disc in response to a command input through control of the first control unit and an external key input, and displaying an operation state of the system to the outside. An optical disk loading board connected to the first control unit, the optical disc loading board including a command interface for inputting / outputting commands and a data interface for outputting error-corrected data; And And a second control unit connected to the command interface, wherein the second control unit exchanges command data with the first control unit, inputs data required from the optical disc loading board through the data interface, and transmits the data interface. An MPEG board for MPEG decoding the data inputted from the device and outputting the MPEG decoding data as video and audio data, respectively; And the optical disc loading board and the MPEG board are dually designed and operated by using the first control unit and the second control unit. The optical disc loading board of claim 4, wherein An optical pickup for receiving photoelectrically converted light after irradiating light from the light source to the optical disk under the control of the first control unit, and converting the photoelectrically converted signal as an analog high frequency signal; A high frequency amplifier for amplifying and shaping the analog high frequency signal; Input the signal output from the high-frequency amplifier, convert the analog signal into a digital signal through slicing to correct the error and store the error-corrected data, in response to the control of the first controller at the request of the second controller Data processing means for outputting the stored error corrected data to the MPEG board through the data interface; A servo for controlling the system to operate stably by detecting, amplifying and correcting errors such as tracking, focusing, sledding, and spindle from the high frequency amplifier, and outputting the amplified and corrected signals to the optical pickup unit; Display means for displaying a current operation state to the outside under the control of the first controller; And And key input means for transferring a command input from an outside of the system to the first control unit. The optical control apparatus as claimed in claim 2, wherein the first control unit of the optical disc loading board controls to directly obtain information required by the first control unit from the data processing unit without a request of the second control unit. Disc playback system. The optical disc reproducing system according to claim 1, wherein power applied to the MPEG board is supplied from the optical disc loading board. An optical disc reproducing system for reproducing data recorded on an optical disc, A data interface including a first control unit, restoring and error correcting data recorded on the optical disc under control of the first control unit, and outputting error corrected data; An optical disk loading board including a command interface for inputting / outputting and a key interface; And a second control unit connected to the command interface, input necessary data from the data interface corresponding to a command input / output from / to the second control unit, and MPEG-decode the input data to process video and audio data. Each of the MPEG boards as output; And And a third controller connected to the key interface, and displays a current operation state to the outside under the control of the third controller, and transmits a command input from the outside to the first controller through the third controller. And a key input board to And the optical disc loading board, the MPEG board, and the key input board are designed and operated by using each of the first control unit, the second control unit, and the third control unit. 6. The optical disc loading board of claim 5, wherein An optical pickup unit which receives light returned from the light source after the irradiation from the light source to the optical disk under the control of the first control unit, performs photoelectric conversion on the light, and outputs the photoelectrically converted signal as an analog high frequency signal; A high frequency amplifier for amplifying and shaping the analog high frequency signal; Input the signal output from the high-frequency amplifier, convert the analog signal into a digital signal through slicing to correct the error and store the error-corrected data, in response to the control of the first controller at the request of the second controller Data processing means for outputting the stored error corrected data to the MPEG board through the data interface; And And servo which controls the system to operate stably by detecting, amplifying and correcting errors such as tracking, focusing, sledding, and spindle from the high frequency amplifier and outputting the amplified and corrected signals to the optical pickup unit. The apparatus of claim 6, wherein the first controller is configured to provide information required by the first controller and the third controller without the request of the second controller of the MPEG board. And control to obtain directly from the processing means. The method of claim 5, wherein the key input board A display unit configured to externally display a current operation state according to the control of the third controller; And And a key input unit for transferring a command input from the outside of the system to the third control unit. The optical disc reproducing system according to claim 5, wherein power applied to the MPEG board and the key input board is supplied from the optical disc loading board.