CN2585520Y

CN2585520Y - Digital video recorder

Info

Publication number: CN2585520Y
Application number: CN 02288374
Authority: CN
Inventors: 张健; 陈银龙; 唐慧明; 游�燕
Original assignee: NANWANG IMAGE INFORMATION INDUSTRY Co Ltd ZHEJIANG
Current assignee: NANWANG IMAGE INFORMATION INDUSTRY Co Ltd ZHEJIANG
Priority date: 2002-12-10
Filing date: 2002-12-10
Publication date: 2003-11-05
Anticipated expiration: 2012-12-10

Abstract

The utility model discloses a digital VTR, which can be used for real-time shooting and recording audio and video signals which can be stored, and at the same time, a moving object can be detected. The digital VTR comprises a signal collecting system, a circuit system and display output equipment, wherein, the circuit system comprises an analogue-to-digital conversion circuit, a dynamic image coding circuit, a central processing circuit, a demoding circuit, a digital-to-analogue conversion circuit and a hard disk storage circuit, a video detection circuit, a static image coding circuit and a shooting control circuit. One end of the video detection circuit is connected with the analogue-to-digital conversion circuit, and the other end is connected with the central processing circuit. The shooting control circuit is respectively connected with the analogue-to-digital conversion circuit, the static image coding circuit and the central processing circuit, and the static image coding circuit is connected with the central processing circuit.

Description

Digital VTR

Technical field

The utility model relates to a kind of video tape recorder, and particularly a kind of recording audio-video signal in real time also stores, and can detect the digital VTR of moving object simultaneously.

Background technology

Digital VTR is a kind of new product of video tape recorder field appearance in recent years, generally can be divided into two kinds of combined and stand-alone types, combined video tape recorder mainly is made up of image compression card and PC, less stable, and must with the PC logotype, use is restricted, and the stand-alone type video tape recorder is mainly by analog/digital converter, coding circuit, central processing circuit, the hard disk storage circuit, decoding circuit, D/A conversion circuit is formed, though this kind digital VTR is simple in structure, use wide, but all only rest on the dynamic continuously recording, no matter whether need, as long as start, it is continuously recording always just, can not realize the function of carrying out the real-time grasp shoot of still image and storage and automatic video recording or stopping recording according to the abnormal conditions of target so not only causing waste, also make the monitor staff be difficult to control or operation in monitoring or during playback, also being difficult to concentrates on crucial points examines and analyzes and leaked important information easily.

The utility model content

The utility model improves on the basis of existing digital VTR at the problem of above existence, and providing a kind of can carry out the real-time grasp shoot of still image and the digital VTR of storage according to the abnormal conditions of target, can carry out the detection of moving object simultaneously.

In order to realize above purpose, the utility model is achieved through the following technical solutions: a kind of digital VTR is provided, comprise signal acquiring system, Circuits System and demonstration output equipment, wherein Circuits System comprises A/D conversion circuit, the moving picture encoding circuit, central processing circuit, decoding circuit, D/A conversion circuit and hard disk storage circuit, A/D conversion circuit one end links to each other with signal acquiring system, the other end links to each other with the moving picture encoding circuit, the moving picture encoding circuit links to each other with central processing circuit, the hard disk storage circuit links to each other with central processing circuit, central processing circuit is sent the digital coding compressed signal that receives into the storage of hard disk storage circuit or needed digital coding compressed signal is taken out from memory circuit, decoding circuit one end links to each other with central processing circuit, the other end links to each other with D/A conversion circuit, show that output equipment links to each other with D/A conversion circuit, the analog signal that receives is shown, be provided with the Video Detection circuit in the Circuits System, still image coding circuit and film making control circuit, Video Detection circuit one end links to each other with A/D conversion circuit, the other end links to each other with central processing circuit, the film making control circuit respectively with A/D conversion circuit, the still image coding circuit, central processing circuit links to each other, and the still image coding circuit links to each other with central processing circuit.

Adopt the digital VTR of above structure, can open automatically and carry out safety monitoring, also monitoring period can be set flexibly voluntarily, under the situation to no worker monitor, the abnormal conditions that target occurs are carried out the real-time shooting of digital picture automatically, and digital image information is sent in the storage control section.Can also whether report to the police according to detecting the decision of digital picture storage control section simultaneously.Also be provided with multiple output interface further check collect image information, to guarantee carrying out smoothly of safety guard work.

Further specify embodiment of the present utility model below in conjunction with accompanying drawing.

Description of drawings

Fig. 1 is a kind of embodiment circuit structure block diagram of the digital VTR that proposes of the utility model;

Fig. 2 is a kind of embodiment circuit theory schematic diagram of the digital VTR that proposes of the utility model;

Embodiment

Fig. 1 provides is a kind of embodiment circuit structure block diagram of the digital VTR that proposes of the utility model, signal acquiring system is a camera, show that output equipment 7 is a monitor, Circuits System comprises A/D conversion circuit 1, moving picture encoding circuit 2, still image coding circuit 10, central processing circuit 3, decoding circuit 5, D/A conversion circuit 6, hard disk storage circuit 4, Video Detection circuit 8 and film making control circuit 9.The data output end of A/D conversion circuit 1 links to each other with the data input pin of moving picture encoding circuit 2, received analog signal conversion is become digital signal and sends into moving picture encoding circuit 2, the data output end of moving picture encoding circuit 2 links to each other with the data/address bus of central processing circuit 3, to send into central processing circuit 3 after the received digital signal encoding compression processing, the data wire of hard disk storage circuit 4 links to each other with the data/address bus of central processing circuit 3, central processing circuit 3 is sent the digital signal that receives into 4 storages of hard disk storage circuit or needed digital signal is taken out from hard-disc storage circuit 4, the data input pin of decoding circuit 5 links to each other with the data/address bus of central processing circuit 3, its data output end links to each other with the data input pin of D/A conversion circuit 6, to reduce and send into D/A conversion circuit 6 from the compression digital signal of central processing circuit 3 inputs, D/A conversion circuit 6 converts the digital signal that receives to analog signal and output, the data input pin of display device 7 links to each other with the data output end of D/A conversion circuit 6, and the analog signal that receives is shown.The data input pin of Video Detection circuit 8 links to each other with the data output end of A/D conversion circuit 1, receive the digital signal that A/D conversion circuit 1 sends, the output of Video Detection circuit 8 links to each other with the data/address bus of central processing circuit 3, send Video Detection circuit 8 detected motor messages to central processing circuit 3 by this holding wire, simultaneously by central processing circuit 3 controls, one tunnel signal from analog/digital conversion circuit 1 output of motion will be detected, and send into the film making control circuit 9, simultaneously, control film making control circuit 9 by central processing circuit 3, above-mentioned motor message is captured.The output of film making control circuit 9 links to each other with the input of still image coding circuit 10, with the signal captured after the encoding compression of still image coding circuit 10, flow to central processing circuit 3, by the display device demonstration or by the hard-disc storage circuitry stores.

Fig. 2 provides is a kind of embodiment circuit theory schematic diagram of the digital VTR that proposes of the utility model, A/D conversion circuit 1 is made up of video simulation/digitlization chip U1 (model is SAA7113) and peripheral circuit, camera collection to analog video signal enter A/D conversion circuit 1 by the VIDEO_IN interface, analog signal conversion is become digital signal, export 8 bit digital vision signal VPO0 ~ 7.The holding wire of 8 bit digital vision signal VPO0 ~ 7 of vision signal conversion chip U1 (model is SAA7113) links to each other with the holding wire of CAM_VDIN0 ~ 7 of the main control chip U81 (model is AQ309M) of VID0 ~ holding wire of the holding wire of VID0 ~ 7 of the main control chip U21 (model is SZ1510) of moving picture encoding circuit, film making control chip U91 (model is 4051), Video Detection circuit respectively, with 8 bit digital vision signals flow to moving picture encoding circuit 2 respectively, make film control circuit 9 and Video Detection circuit 8.

Moving picture encoding circuit 2 is made up of master control coding chip U21 (model is SZ1510) and memory U22 (model is SDRAM).BD0 ~ 15 data/address buss on the main control chip U31 (model is PowerPC860T) of HAD0 ~ 15 holding wires on the master control coding chip U21 (model is SZ1510) and central processing circuit 3 link to each other.Moving picture encoding circuit 2 is by the holding wire of VID0 ~ 7, and the digital signal that reception A/D conversion circuit 1 transmits is also carried out encoding compression, and the digital signal after the output encoder compression is simultaneously given central processing circuit 3.

Central processing circuit 3 comprises main control chip U31 (model is PowerPC860T), first memory U32 (model is FLASH) and second memory U33 (model is SDRAM).BD0 ~ 7 data/address buss of main control chip U31 (model is 860T) are connected with MDATA0 ~ 7 holding wires of the main control chip U81 (model is AQ309M) of Video Detection circuit 8, as Video Detection chip U81 (model is AQ309M) when detecting motor message, with this signal by the main control chip U31 (model be PowerPC860T) of above-mentioned signal wire transmits to central processing circuit 3, judge and the main control chip U91 (model is 4051) of control film making control circuit 9 by PowerPC860T, allow it to current detection to road motor message capture.BD0 ~ 7 data/address buss of main control chip U31 (model is PowerPC860T) link to each other with the holding wire of VID0 ~ 7 of the main control chip U91 (model is 4051) of film making control circuit 9.

Still image coding circuit 10 is made up of master control coding chip U101 (model is SZ1510) and memory U102 (model is SDRAM).The holding wire of VID0 ~ 7 of master control coding chip U101 (model is SZ1510) is connected with BD0 ~ 15 data/address buss of central processing circuit 3, and the image after by this holding wire candid photograph being encoded is delivered to the main control chip U31 (model is PowerPC860T) of central processing circuit 3.Master control coding chip U101 links to each other with memory U102 by holding wire, and signal data can also can read signal data from storage U102 from be stored in memory U102.

Video Detection circuit 8 is by a main control chip U81 (model is AQ309M) and static memory U82 (model is SDRAM).Signal to mould/numberization carries out motion detection, and will have the signal of motion to pass to BD0 ~ 15 data/address buss of central processing circuit 3 from MDATA0 ~ 7 holding wires.Video Detection circuit 8 can be provided with the picture segmentation circuit, vision signal is cut apart according to picture, so that observe.

After the main control chip U91 (model is 4051) of film making control circuit 9 obtains motion video from the holding wire of VPO0 ~ 7 of the main control chip U1 (model is SAA7113) of A/D conversion circuit 1, it is captured, link to each other by the holding wire of HAD0 ~ 15 holding wires then with master control coding chip U101 (model is SZ1510) VID0 ~ 7 of still image coding circuit 10, the vision signal of capturing is passed to the master control coding chip U101 (model is SZ1510) of still image coding circuit 10, and encode by U101.

Hard-disc storage circuit 4 is made up of hard drive circuit U 4 (model is 16245) and hard disk.By BD0 ~ 15 data/address buss hard drive chip and central processing unit are coupled together.Can store from all signals of central processing circuit to hard disk by this holding wire, also can be from hard disk read data information.Hard disk and hard drive circuit can be arranged apart, also can be combined in one.

The input of decoding circuit 5 links to each other with the data/address bus of central processing circuit 3, its output links to each other with the input of D/A conversion circuit 6, to reduce and send into D/A conversion circuit 6 from the compression digital signal of central processing circuit 3 inputs, D/A conversion circuit 6 converts the digital signal that receives to analog signal and output, the input that shows output equipment 7 links to each other with the output of D/A conversion circuit 6, and the analog signal that receives is shown.

Can be provided with switch in the Circuits System, switch is an automatic or manual.Simultaneously also can be provided with warning circuit and remote alarm interface, set according to the abnormal conditions of target and whether report to the police.

It more than is specific embodiment of the utility model; the utility model is not limited to above embodiment, many distortion can also be arranged, those of ordinary skill in the art; can all should think protection range of the present utility model from all distortion that the disclosed content of the utility model directly derives or association obtains.

Claims

1, a kind of digital VTR, comprise signal acquiring system, Circuits System and demonstration output equipment (7), wherein Circuits System comprises A/D conversion circuit (1), moving picture encoding circuit (2), central processing circuit (3), decoding circuit (5), D/A conversion circuit (6) and hard disk storage circuit (4), A/D conversion circuit (1) one end links to each other with signal acquiring system, the other end links to each other with moving picture encoding circuit (2), moving picture encoding circuit (2) links to each other with central processing circuit (3), hard disk storage circuit (4) links to each other with central processing circuit (3), central processing circuit (3) is sent the digital coding compressed signal that receives into hard disk storage circuit (4) storage or needed digital coding compressed signal is taken out from memory circuit (4), decoding circuit (5) one ends link to each other with central processing circuit (3), the other end links to each other with D/A conversion circuit (6), show that output equipment (7) links to each other with D/A conversion circuit (6), the analog signal that receives is shown

It is characterized in that being provided with in the Circuits System Video Detection circuit (8), still image coding circuit (10) and film making control circuit (9), described Video Detection circuit (8) one ends link to each other with described A/D conversion circuit (1), the other end links to each other with central processing circuit (3), film making control circuit (9) links to each other with A/D conversion circuit (1), still image coding circuit (10), central processing circuit (3) respectively, and still image coding circuit (10) links to each other with central processing circuit (3).

2, digital VTR according to claim 1 is characterized in that described Video Detection circuit (8) is made up of main control chip U81 and static store U82.

3, digital VTR according to claim 2, the main control chip U81 that it is characterized in that described composition Video Detection circuit (8) is AQ309M, static store U82 is SDRAM.

4,, it is characterized in that described Video Detection circuit (8) also comprises the picture segmentation circuit according to claim 1 or 2 or 3 described digital VTRs.

5, digital VTR according to claim 1 is characterized in that described film making control circuit (9) is included in a main control chip U91.

6, digital VTR according to claim 5 is characterized in that the main control chip U91 of described composition film making control circuit (9) is 4051 chips.

7, digital VTR according to claim 1 is characterized in that described central processing circuit (3) is made up of main control chip U31, first memory U32 and second memory U33, and main control chip U31 links to each other with above-mentioned two memories (U32, U33) respectively.

8, digital VTR according to claim 7, the main control chip U31 that it is characterized in that forming central processing circuit (3) is the PowerPC860T chip, and first memory U32 is the FLASH memory, and second memory U33 is the SDRAM memory.

9, digital VTR according to claim 1 is characterized in that described hard-disc storage circuit (4) is made up of hard drive circuit U 4 and hard disk, and hard disk separates with hard drive circuit U 4 or is combined in one.

10, according to claim 1 or 2 or 3 or 5 or 7 or 9 described digital VTRs, it is characterized in that Circuits System is provided with switch or warning circuit and remote alarm interface, switch is an automatic or manual.