CN201199721Y

CN201199721Y - Apparatus for recording sound and image

Info

Publication number: CN201199721Y
Application number: CNU2008200444869U
Authority: CN
Inventors: 候太炎; 李传翘
Original assignee: HUIZHOU DESAY INDUSTRY DEVELOPMENT Co Ltd
Current assignee: HUIZHOU DESAY INDUSTRY DEVELOPMENT Co Ltd
Priority date: 2008-02-28
Filing date: 2008-02-28
Publication date: 2009-02-25
Anticipated expiration: 2018-02-28

Abstract

The utility model relates to a digital type recording device for recording audio frequency and images, which belongs to the technical field of the video recorder. The audio and video recording device comprises a central processor, an input processor, an output processor and a memorizer, wherein, a signal received by the input processor is processed by the central processor and stored by the memorizer, the stored signal is output to the output processor by the central processor, and a key unit, a display unit and a general data interface which are used for interface treatment are also connected on the central processor. The digital audio and video recording device provided by the application can fully replace the function of the traditional analog video recorder, not only can record and store the simulated programs, but also can receive and store the digital television programs transmitted by the digital television system, adopt different digital compression methods according to different requirements to program quality and periodically record the programs as required and rapidly search the recorded programs.

Description

A kind of sound shadow record device

Technical field

The utility model relates to the video tape recorder technical field, be specifically related to a kind of can the imprinting audio frequency, the digital record device of image.

Background technology

At present, a lot of TV user are owing to working, go out or other reasons and can not see own loved TV programme, as every athletic competition, TV special, TV play etc.For this part user, they urgently wish can to watch again when free the program of oneself hobby.Simultaneously, certain customers wish can watch repeatedly at any time, appreciate some programs.Especially 2008 Olympic Games will be held in China, and more when the time comes user may not miss oneself and like competition broadcast because watch on time.

Although the analog CD writer that getting up early occurs can recording TV program and is connected broadcast again with television set, magnetic tape type CD writer memory space is little, also is not easy to be connected with other video playback medium, and the convenience of use is also had a greatly reduced quality.

The utility model content

Technical problem to be solved in the utility model provides can record sound shadow digital signal program, have universal data interface, memory capacity is big and the sound shadow record device of wide application.

For the technical scheme that solves the problems of the technologies described above realization of the present utility model is

A kind of sound shadow record device comprises central processing unit, input processor, output processor and memory, the signal that input processor receives is through the central processing unit processing and by memory stores, storage signal outputs to output processor through central processing unit, also is connected with the push-button unit, display unit and the universal data interface that are used for interface processing on the described central processing unit.

Central processing unit in the such scheme is the MTK8015 processor based on the MTK platform development.The I/O processor of handling vision signal is a WM8775 type processor, and audio signal adopts WM8766 type audio process.For the ease of being connected, also be provided with the Universal USB data-interface on the central processing unit of this sound shadow Writing device with corresponding video player.

The utility model has following remarkable result compared to existing technology:

The digital sound shadow record device that the application provided, can full substitution for the function of traditional analog video tape recorder, both can record, store analog program, can also receive the digital television program that the storage digital television system transmits, can be according to the different mining that program quality is required with different digital compression modes, timed recording program and apace institute's recorded program being searched for as required.

The sound shadow record device that the application provided is widely used, and can also be used in the civilian monitoring project to store the image that each camera transmits as the center surveillance equipment and encode, and pass the signal to far-end control centre as required; Also can be used for the broadcast level television headend uses.In addition, this digital sound shadow record device can be used as the program making instrument of VCD, DVD, and the imprinting interface equipment can be made VCD, DVD CD-ROM Title respectively on the digital VTR band.

Description of drawings

Fig. 1 is a schematic block circuit diagram of the present utility model;

Embodiment

Referring to accompanying drawing 1, a kind of sound shadow record device comprises central processing unit, I/O processor, memory, push-button unit, display unit and universal data interface.Input processor receives the signal of audio frequency, video and handles through central processing unit and stored by memory DDR, and storage signal process central processing unit outputs to audio frequency, video output processor is finished data readback.

The AV signal I/O processor that is used for processing audio and vision signal in the present embodiment adopts audio frequency WM8766 and video WM8775 respectively, central processing unit is based on the MTK8105 of MTK platform development, the inner master control chip of MTK8105 adopts embedded x86 CPU, can support a large amount of peripheral modules such as polytype external memory interface and USB controller, EPROM, clock generator, power supervisor, interrupt control unit.CPU carries out the data transmission by other chip of interface and system in the central processing unit, sends order.

The logical WM8775 of the analog video signal of input, the video/audio signal of simulation is decoded into the video data stream of ITU-656 form, after encoding through the MTK8105 chip, can change this video/audio data flow the data flow of MPEG-2 form, the data flow of this form is input in the hard disk stores, just finished the memory function of digital sound shadow record device.After mpeg data stream behind the coding of hard-disc storage was decoded through MTK8105, the video data of output ITU-656 form flow to video WM8775, output CVBS signal and S-Video signal after changing.By its video output terminal the TV signal of being recorded is connected on the television set, has just finished playing function.If carry out above two processes simultaneously, recorded broadcast function when just having finished DVR.

The processing procedure and the video processing procedure of audio signal are similar: the audio signal of input is encoded into mpeg format through MTK8105 again through the audio signal that audio process WM8766 converts numeral to.The audio signal of mpeg format converts analogue audio frequency output to through audio process WM8766.

The video/audio data are handled in central processing unit MTK1085, data can be delivered in the hard disk by its CPU to store.Peripheral interface by CPU provides can be connected with plurality of devices, the programme information that the user can obtain to store in the hard disk by external interfaces such as USB interface, serial line interfaces.The user can also be connected with video camera by external interface, and the video camera recorded program just stores by this device like this, also can play by device.

The utility model can recording TV program and other vision signal and the equipment that can reset.Be provided with by the user and begin to record zero-time and to record duration.The time period automatically recording video program using that video tape recorder can be provided with the user, and it is kept on built-in memory device or the memories such as external equipment such as USB flash disk, portable hard drive.The user can replay recorded program at any time, and is convenient and practical.

Claims

1. sound shadow record device, it is characterized in that: comprise central processing unit, input processor, output processor and memory, the signal that input processor receives is through the central processing unit processing and by memory stores, storage signal outputs to output processor through central processing unit, also is connected with the push-button unit, display unit and the universal data interface that are used for interface processing on the described central processing unit.

2. sound shadow record device according to claim 1 is characterized in that: described central processing unit is the MTK8015 processor based on the MTK platform development.

3. sound shadow record device according to claim 2, it is characterized in that: described input processor and the output processor employing WM8775 type processor that is used to handle vision signal, the input processor and the output processor that are used for audio signal adopt WM8766 type audio process.

4. sound shadow record device according to claim 3 is characterized in that: the included display screen of described display unit is LCD, and described universal data interface is a USB interface.