KR200268775Y1 - campact disk player - Google Patents

Abstract

The present invention relates to a video processing apparatus, which reads a data source from a compact disc, which is compressed / stored by MPEG4 or Diviccdec, extracts the data source into digital video and audio data from a decompressor, and then outputs the video deck. By modulating and outputting the analog data from the audio deck, the general user can watch the full screen of the television, regardless of the size of the data source, through an analog television that is widely used in general homes.

Description

Video Processing Unit {campact disk player}

The present invention relates to a video processing device, and more specifically, to modulate the digital video and audio data stored in digital compression method such as MPEG4, DIV, etc. into analog video and audio data so that it can be viewed on an analog television. The present invention relates to a moving picture processing apparatus.

Recently, thanks to the remarkable development of digital audio technology, MPEG-2 (MPEG2) and MPEG4 (MPEG4), which are digital video compression technologies, have been applied to various electronic communication fields such as video conferencing, digital broadcasting codec, and video telephony. It is used a lot.

MPEG 2 compresses the video and audio information input at a certain size according to the specified data throughput, and transmits the generated bit stream.The receiving end decompresses it and outputs it to a screen or a speaker for viewing. It is widely used in fields requiring high image quality and sound quality.

MPEG4 can be composed of a set of objects of a specific part in which audio and visual data exist on the screen, and can be composed of various visual objects such as people, cars, trees, sky, birds, and clouds on one screen. You can save videos with higher compression efficiency under similar quality conditions.

In particular, DIVX CODEC, which is distributed freely among netizens, is in the spotlight, and this Diviccotech is a modified version of MP4 and uses the MP3 (MP3) format to minimize the soundtrack.

Therefore, netizens and general users compress their favorite movies, entertainment, etc. in a high-compression, high resolution MPEG4 and MPEG4 variant, and register them on a network or store them on a compact disc.

However, movies, entertainment, etc., which are compressed / stored in the MPEG4 and DICCODEC methods, are digital video and audio data.

The present invention has been made in view of the above-described problems, and its purpose is to analogize digital video and audio data compressed with MPEG4, Diccodec, etc. into analog video and audio data, and are widely used in general homes. This is to make it possible to watch through television.

1 is a block diagram illustrating a video reproducing apparatus of the present invention.

2 is a detailed block diagram illustrating a video reproducing apparatus of the present invention.

* Description of the symbols for the main parts of the drawings *

10: CD-ROM drive 20: Selection control unit

21: LCD 23: keypad

25: remote control signal detection unit 30: central control unit

31: Audio / Video Process 33: Local Bus Control Unit

40: interface unit 41: input control unit

43: memory buffer 50: decompression unit

51: SDRAM control unit 52: SDRAM

53: Audio / Video Input Port 54: Video Decode Engine

55: voice decode engine 60: output unit

61: Video Deck 63: Audio Deck

Configuration of the present invention for achieving the above object is made as follows.

In a video playback device for modulating digital data into an analog signal to watch a video on an analog television,

A CD-ROM driver that provides basic data sources by reading digital video and audio data compressed / stored in a compact disc;

A selection control unit for outputting an electrical signal corresponding to a user selecting / adjusting an operation required to watch a video;

Decompresses the data source stored in the compact disc according to the electrical signal applied from the selection controller, and modulates the decompressed digital data into analog data to control the overall operation for watching a video on an analog TV. Central control unit,

An interface for interconnecting the CD-ROM drive with a central controller and inputting / outputting a data source read from the CD-ROM drive;

A decompression unit which reads and decompresses digital data input through the interface according to a control signal applied from the central control unit, and extracts digital image data and digital audio data from the decompressed data source;

And an output unit for modulating the digital video and audio data released by the decompression unit into analog video and audio data and outputting an analog signal corresponding thereto.

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

The moving picture processing apparatus of the present invention includes a CD-ROM drive (10), a selection controller (20), a central controller (30), an interface (40, INTERFACE), a decompression unit (50), It consists of an output unit 60.

The CD-ROM driver 10 is a basic device for providing a data source, and reads digital video and audio data compressed / stored in a compact disc in a manner such as MPEG4 or Diviccotech.

Of course, the CD-ROM driver 10 has high compatibility for reading digital video and audio data such as general music CDs, MP3s, and video CDs.

When the user selects / adjusts an operation required for watching a video, the selection controller 20 outputs an electrical signal corresponding thereto.

The selection control unit 20 has an LCD 21 for displaying basic information such as a file name and size stored in the CD-ROM, and basic operations necessary for viewing, that is, fast-forwarding, stopping, starting, rewinding, stopping power, and volume. Key pad 23 for operating a back and the like, and a remote control signal detection unit 25 for detecting a remote signal for remote control in a short distance that can not reach by hand.

The central control unit 30 decompresses the data source stored in the compact disc according to the electrical signal applied from the selection control unit 20, modulates the decompressed digital data into analog data, and then converts the decompressed digital data into an analog television. Controls the overall operation for watching a video.

The central controller 30 controls the operation of the CD-ROM drive 10 by analyzing / determining an electrical signal input from the selection controller 20, and controls a data source read from the CD-ROM drive 10 through a bus. An audio / video processor 31 for outputting a control signal for input / output, and a bit and speed of a bus, which is a movement path of data, are operated at a clock speed and a bit width of the audio / video processor 31. It consists of a local bus control unit 33 (LOCAL BUS CONTROLLER).

The interface 40 interconnects the CD-ROM drive 10 and the central controller 30 to input and output data sources read from the CD-ROM drive 10.

The interface 40 independently outputs a control signal for inputting and outputting a data source read by the CD-ROM driver 10 without passing through the central controller 30, and outputs a voice / video processor of the central controller 30. 31, an input control unit 41 (INPUT CONTROL) synchronized with the clock of 31), and a memory buffer 43 (MEMORY BUFFER) for temporarily storing data sources of the compact disc inputted by the control signal outputted to the input control unit 41. It consists of.

The decompression unit 50 reads and decompresses digital data temporarily stored in the memory buffer 43 of the interface 40 according to a control signal applied from the central control unit 30, and decompresses the decompressed data source. Extract digital video data and digital audio data from.

For example, the decompression unit 50 not only decompresses digital data such as MPEG4 and DivX, which are high compression and high definition compression methods, but also digital data stored in video CDs and music CDs which are widely used. It has extensive compatibility to decompress it.

The decompressor 50 controls an SDRAM controller to control input / output of data sources stored in the memory buffer 43 of the interface 40 in synchronization with a clock of the central controller 30. (51), the SDRAM 52 for temporarily storing data according to the control signal of the SDRAM controller 51, and the data source temporarily stored in the memory buffer 43 of the interface 40 is read out. Is an audio / video input port 53 and an audio / video input port 53, which extracts digital image data by decompressing a data source such as MPEG4 or DivIC Codec inputted through the audio / video input port 53. VIDEO DECODE ENGINE, and AUDIO DECODE ENGINE 55 which extracts digital voice data by decompressing a data source input through the audio / video input port 53. .

The output unit 60 modulates the digital video and audio data released by the decompression unit 50 into analog video and audio data and outputs an analog signal corresponding thereto.

The output unit 60 modulates the digital image data decompressed by the image decode engine 54 into analog image data, and adjusts and outputs the modulated analog image data according to the size of the output screen. VIDEO DACs, and audio decks 63 (AUDIO DACs) for modulating and outputting digital audio data decompressed by the audio decoding engine 55 into analog audio data.

Referring to the operation of the video reconstruction device of the present invention made as described above are as follows.

First, a user inserts a compact disc, which is compressed / stored as MP3, MPEG4, DivIC Codec, Video CD, etc., into the CD-ROM drive 10, and then operates the compact 23 by operating the keypad 23 of the selection control unit 20. When the disc is played back, the audio / video processor 31 of the central controller 30 outputs a playback signal to the CD-ROM drive 10 through the interface 40, and the CD-ROM drive 10 reads data from the compact disc. For example, the corresponding data source is output to the interface 40.

At this time, the data source does not go through the central controller 30 according to a control signal of the input controller 41 of the interface 40 synchronized with the clock speed of the audio / video process 31 of the central controller 30. It is temporarily stored in the memory buffer 43 of the interface 40.

Thereafter, the local bus control unit 33 of the central control unit 30 stores the data source in which the audio / video input port 53 of the decompression unit 50 is temporarily stored in the memory buffer 43 of the interface unit 40. The bus, which is a movement path of data, can be operated at the clock speed and the bit width of the audio / video process 31 of the central controller 30 so that the data can be read.

At this time, the audio / video input porter 53 of the decompression unit 50 reads the data source stored in the memory buffer 43 of the interface unit 40 according to the control signal of the local bus controller 33. The data source read above is decompressed by the video decoding engine 54 of the decompression unit 50 and the audio decoding engine 55 to extract digital video information and audio information, and to extract the digital data. The video information and the audio information are stored in the SDRAM 52 by the control signal of the SDRAM controller 51.

Thereafter, the image deck 61 of the output unit 60 reads the digital image information stored in the SDRAM 52, modulates the image into analog image information, and then adjusts the image screen to fit the size of the entire screen of the analog television. Adjust the size and output to the video terminal, the audio deck 63 reads the digital audio information stored in the SDRAM 52, modulates the analog audio information and outputs it to the audio terminal of the television.

As described above, the present invention reads data sources from compact discs, which are compressed / stored as well as general music CDs and video CDs, as well as MPEG4 and Diccodec, and decompresses the data sources into digital images and By extracting the audio data and modulating the analog data from the video deck and the audio deck of the output unit, it can be viewed by the general user through an analog-type television that is widely used in general homes.

In addition, since the size of the video screen is adjusted according to the size of the output screen by the video deck, the general user can watch the full screen of the TV, even if the data source stored in the compact disc is stored in any size.

Claims (4)

In a video playback device for modulating digital data into an analog signal to watch a video on an analog television, A CD-ROM driver that provides basic data sources by reading digital video and audio data compressed / stored in a compact disc; A selection control unit for outputting an electrical signal corresponding to a user selecting / adjusting an operation required to watch a video; Decompresses the data source stored in the compact disc according to the electrical signal applied from the selection controller, and modulates the decompressed digital data into analog data to control the overall operation for watching a video on an analog TV. Central control unit, An interface for interconnecting the CD-ROM drive with a central controller and inputting / outputting a data source read from the CD-ROM drive; A decompression unit which reads and decompresses digital data input through the interface according to a control signal applied from the central control unit, and extracts digital image data and digital audio data from the decompressed data source; And an output unit for modulating the digital video and audio data released by the decompression unit into analog video and audio data and outputting an analog signal corresponding thereto. According to claim 1, wherein the interface is synchronized with the clock of the central control unit by an input control unit for outputting a control signal for inputting and outputting a data source independently read by the CD-ROM driver and a control signal output from the input control unit; A video player comprising a memory buffer for temporarily storing the data source of the input compact disk. The SDRAM control unit of claim 1, wherein the decompression unit is configured to control input / output of data sources stored in a memory buffer of the interface in synchronization with a clock of the central controller, and to store data according to a control signal of the SDRAM controller. It is possible to decompress the digital video data by decompressing the data source input through the SDRAM for temporarily storing the data source, the data source temporarily stored in the memory buffer of the interface, and the audio / video input port. Video decoding apparatus including a video decoding engine for extracting, and a voice decode engine for extracting digital audio data by decompressing the data source input through the audio / video input port The image of claim 1, wherein the output unit modulates the digital image data decompressed by the image decoding engine into analog image data, and adjusts and outputs the modulated analog image data according to the size of the output screen. And a deck, and a voice deck for modulating and outputting the digital voice data decompressed by the voice decoding engine into analog voice data.