CN2606507Y

CN2606507Y - Digital hard disc video corder

Info

Publication number: CN2606507Y
Application number: CN 02209171
Authority: CN
Inventors: 李洪广; 温金桃
Original assignee: Beijing Haier IC Design Co Ltd
Current assignee: Beijing Haier IC Design Co Ltd
Priority date: 2002-04-02
Filing date: 2002-04-02
Publication date: 2004-03-10
Anticipated expiration: 2012-04-02

Abstract

Before a digital TV signal (TS stream) is decoded by a receiver or after the TS stream is decoded by a system only a TS package of a packetized identifier (PID) is received. The digital TV signal is memorized to a hard disk via the interface of the hard disk according to the stated memory mode. The digital TV signal can be operated according to the stated file format, such as searching, listing, renaming, adding, deleting and so on. The digital TV signal can also be read from the hard disk and be sent to the receiver to be decoded and played according to requirements.

Description

Digital hard disc video recorder

Affiliated technical field

The utility model is a kind of DVR, and relating to the hard disk is medium, can will defer to the digital television program of mpeg standard store hard disk into, and can from hard disk, export the device that the program stored is play to player.It mainly is used in fields such as Digital Television, digital satellite receiver.

Background technology

Common TV user usually wishes highlight in the TV or valuable performance recording are got off, and is provided with the back and plays.For example, the people by the then educational programs of TV is learnt by oneself when the time of then educational programs conflicted with the operating time, will miss some courses; There are some to wish that some programs will be such as the return of Hong kong, China's entry into the WTO the time remain, and review after being provided with.Yet, undesirable in the simulated television epoch with program recording picture quality, and the search program is slow.Because the digitlization of TV programme, the mode of video tape is stored and is play program and can't satisfy the demands.

Summary of the invention

Technical problem to be solved by this invention is that digitized TV programme is passed through hard-disk interface, directly stores on the hard disk, sets then and plays or by USB interface data are sent on the other-end.Thereby realize digital television program is stored, play, picture quality is good, capacity is big, it is erasable to repeat and search speed is fast.Owing to the high power capacity and the high bandwidth of present hard disk, can satisfy the storage and the broadcast request of Digital Television.

The utility model is that the technical scheme that this function of realization is taked is: during video recording, under the control of recording playback control logic, digital TV transmission stream (transpot stream) from channel decoding chip, pass through the data buffer zone, mode with DMA (directly hard-disc storage) stores data into hard disk in the mode of stipulating; During video reproduction, under the control of recording playback control logic, in the mode of DMA (directly hard-disc storage), with the code stream of program, deliver to the data buffer zone from hard disk, again with the data in the data buffer zone, to satisfy the code check that playing programs requires, deliver to the Digital Television source decoder.

The beneficial effects of the utility model are: as long as increase hard-disk interface, define or choose certain file system, follow certain working specification.When accepting program, can determine to store the specific program of special time into hard disk; And at the fixed time scheduled program is decoded and ripple put.Can satisfy common TV user, for various application needs, with digitized TV programme, the demand of storing and playing.

Description of drawings

Below in conjunction with accompanying drawing and example the utility model is further specified.

Fig. 1 is the DVR hardware configuration

Fig. 2 is the DVR functional definition

Fig. 3 is the annexation of channel decoder and source decoder in the Digital Television

Fig. 4 is the annexation of DVR and channel decoder, DVR and source decoder

Among Fig. 1, the part that is in the background frame is a DVR hardware.The outer part of background frame is the basic decoder module of ordinary numbers TV.Fig. 3, Fig. 4 are the supplementary notes to Fig. 1 annexation.Fig. 3 annexation between channel decoder and the source decoder that remarks additionally.The remark additionally annexation of DVR and channel decoder, DVR and source decoder of Fig. 4.

Embodiment

According to Fig. 4, DVR is connected with channel decoder, source decoder.

The DVR internal structure as shown in Figure 1, video recording data buffer zone, video reproduction data buffer zone are realized by SRAM.The video recording data buffer zone is made up of two pieces.The video reproduction data buffer zone is made up of two pieces.● the video recording course of work (1) host receives user's order (2) host file system initialization (3) DVR hardware initialization (4) recording playback control logic of recording a video from user interface and makes useful code stream from channel decoder, two pieces that write the data input buffer district of circulation.Write when full when a piece, propose interrupt requests,, and start dma controller, the data of this buffer stopper are deposited in the assigned position of hard disk by the host response to host.(5) host reception user stops video recording order (6) Host and suspends the recording playback control logic, host handles file system (7) Host and stops the recording playback control logic, hardware state returns (3) (8) overflow status ● the video reproduction course of work (1) host receives user's video reproduction order (2) host file system initialization (3) DVR hardware initialization (4) host and starts the recording playback control logic, (5) recording playback control logic as required, to host the DAM interrupt requests is proposed, respond by host, and the startup dma controller, predetermined data is write corresponding video reproduction data buffering piece.The recording playback control logic to satisfy the code check of this program requirement, is given channel decoder with code stream with the data in the video reproduction data buffering piece.(6) host reception user stops video reproduction order (7) Host and suspends the recording playback control logic, and host handles file system (8) Host and stops the recording playback control logic, and hardware state returns (3)

Claims

1. digital television signal (TS stream) is through before the receiver decoding, or through system decodes, receives only the TS bag of scheduled program number (PID).Storage mode according to the rules by hard-disk interface, deposits it in hard disk.We can file format according to the rules operate it, as retrieval, catalogue, rename, add, deletion etc.And as required, it can be read from hard disk, send into receiver and decode, play.

2. according to products such as VCD, the DVD of the described composition of claim 1, digital satellite receiver, Digital Television, possesses following feature: on hard disk, store digital television signal (TS stream) or certain PID number TS stream wherein; Can flow back to deliver in the decoder and play being stored in TS on the hard disk.