CN201541299U

CN201541299U - high-definition network camera

Info

Publication number: CN201541299U
Application number: CN 200920131956
Authority: CN
Inventors: 康远
Original assignee: SSJET TECHNOLOGY Co Ltd
Current assignee: SSJET TECHNOLOGY Co Ltd
Priority date: 2009-05-22
Filing date: 2009-05-22
Publication date: 2010-08-04
Anticipated expiration: 2019-05-22

Abstract

The utility model relates to a network camera, in particular to a network camera which can realize high definition. The network camera comprises a lens, a crate, an integrated circuit board and an external power supply, wherein the integrated circuit board is provided with an H.264 HD coding and decoding chip, a DDR memory electrically connected with the H.264 HD coding and decoding chip, an NAND FLASH memory, a high-definition inductor, a video-audio A/D conversion interface chip, an RS 232 serial port interface chip and an RS 485 serial port interface chip, wherein the H.264 HD coding and decoding chip is an MG 3500 coding and decoding system single chip. Through supplementation of modules including the high-definition inductor, the lens and a video-audio transmission and storage module and the like, the network camera can really realize high-definition camera shooting and transmission and can realize the effect of greatly saving the bandwidth through the MG 3500.

Description

The high definition web camera

Technical field:

The utility model relates to a kind of web camera, particularly a kind of web camera of realizing high definition.

Background technology:

Along with the extensive use of digital video monitoring product, people are more and more higher to the definition and the resolution requirement of product, wish that simultaneously taking of the network bandwidth is more and more lower.At present digital video monitoring equipment such as schemes such as DVS, DVR and IPCAM mainly contain solution based on ASIC, based on three kinds of the solutions of general dsp and dedicated multimedia DSP.And the solution of ASIC single-chip includes a CPU and a hardware compression module because of it, greatly reduces the cost of development difficulty and monitoring with respect to other two kinds of schemes.But how really to realize high definition shooting and make that the network bandwidth takies lower, be that problem to be solved is arranged always.And this practical high definition can still obtain the higher high-definition image of image quality just by adopting the H.264 compression algorithm of highest level High profile under than the situation of low code stream.

Summary of the invention:

A kind of network video server that the utility model is invented in order to solve above-mentioned existing issue just.

The utility model is realized by following technological means:

A kind of high definition web camera, include camera lens, cabinet, surface-mounted integrated circuit and external power supply, described surface-mounted integrated circuit is provided with H.264HD codec chip, also is provided with the DDR memory, NAND FLASH memory, the high definition inductor that are electrically connected with codec chip H.264HD, looks audio A/D translation interface chip, RS232 serial interface chip and RS485 serial interface chip.Described H.264HD codec chip is a MG3500 coding/decoding system single-chip.

Described NOR FLASH memory is a program storage, and size is 16MB.

Described camera lens links to each other with the high definition inductor, after light signal imports the high definition inductor into by camera lens, converts digital signal to by the high definition inductor again and imports MG3500 coding/decoding system single-chip into.

Described looking also is connected with 1 intercommunication input signal binding post and 1 intercommunication output signal binding post on audio A/D translation interface chip.

Described network interface chip is the RJ-45 interface type.

Described serial interface chip is the DIO interface type.

Described MG3500 coding/decoding system single-chip also is connected with 1 tunnel warning input and 1 tunnel warning output.

Described MG3500 coding/decoding system single-chip also is connected with a real-time clock module.

Described MG3500 coding/decoding system single-chip also is connected with an Ethernet interface.

The utility model also is achieved through the following technical solutions:

1) adopts highly integrated coding/decoding system single-chip, as MG3500, its dominant frequency can reach 240MHz, and chip internal is an integrated 240MHz ARM9, ITU-R.BT 1120 input interfaces, ITU-R.BT 1120 output interfaces, HD be H.264 decoder, HD MPEG2/JPEG codec, Static Memroy interface, DDR sdram interface, USB interface, SDIO interface, 10M/100M ethernet interface, I2S interface, general purpose I/O interface of encoder, HD H.264.The operating system that ARM9 adopts is arm-linux, the operation of its control whole M G3500 chip and application software.

2) light signal that adopts the high definition inductor that camera lens is brought converts to and gives H.264HD after the digital signal that codec chip compresses processing.

3) audio A/D translation interface chip is looked in employing, and this chip is supported the output of 1 road CVBS analog video signal.

4) adopt and to look audio A/D translation interface chip and be used for speech talkback.

5) adopt high speed DDR SDRAM memory chip, improve program operation speed.

6) adopt NAND FLASH to come saved system program and system configuration information, good stability.

7) a vision signal output wiring terminal (BNC) with look audio A/D translation interface chip and directly link to each other.

8) a speech talkback lead-in clamp (AUDIO JACK) with look audio A/D translation interface chip and directly link to each other.

9) a speech talkback output wiring terminal (AUDIO JACK) with look audio A/D translation interface chip and directly link to each other.

A just ASIC single-chip MG3500 that adopts in the utility model, H.264 its support, the hardware compression of MPEG2 and JPEG, the core cpu frequency can reach 240MHz, this provides power for the various audio compression encoding and decoding of execution, picture AAC,, G.711, G.722, G.726 wait, equally also can be applicable to video analysis, object detecting, target application locking, network streaming media and network monitoring etc., its high coding efficiency can reach 1080p30, provides the foundation for realizing the high definition shooting.By high definition inductor, camera lens and look audio transmission and module such as storage complements each other, then can really realize high definition shooting and transmission again.And, can realize the effect of conserve bandwidth greatly by MG3500.

Description of drawings:

Fig. 1 is that circuit connects block diagram in the utility model surface-mounted integrated circuit;

Fig. 2 is a fundamental diagram of the present utility model;

Fig. 3 separate unit application scenarios of the present utility model schematic diagram;

Fig. 4 many application scenarios schematic diagrames of the present utility model.

Specific embodiment:

In conjunction with Fig. 1 and shown in Figure 2, a kind of high definition web camera includes camera lens, cabinet, surface-mounted integrated circuit and external power supply, and wherein surface-mounted integrated circuit is installed in the cabinet, the power supply A/D adapter 11 of the external 12V of cabinet.As shown in Figure 1, surface-mounted integrated circuit comprises: highly integrated MG3500 coding/decoding system single-chip 1, a high definition inductor 2, look audio A/D translation interface chip 3, DDR memory 4, NOR FLASH memory 5,1 tunnel report to the police input/1 tunnel report to the police output 6, real-time clock 7, RS485 serial interface chip 8, RS232 serial interface chip 9,10M/100M Ethernet interface 10, power supply 11.Wherein DDR memory 4 is system memory, NAND FLASH memory 5 is used for the saved system program, 1 tunnel warning input/1 tunnel warning output 6 provides the interface of warning device, real-time clock 7 provides system's required time, and RS485 serial interface chip 8 and RS232 serial interface chip 9 are used for the PTZ cradle head control.

Wherein MG3500 is a highly integrated coding/decoding system single-chip, and its function is to compress processing to looking audio frequency, and peripheral various interface is supported.DDR memory 4 is system storages, is used for MG3500 coding/decoding system single-chip 1 working procedure and handles video/audio signal, and its storage speed can reach 166MHz.High-definition camera 2 is used for the light signal that camera lens is brought converted to be given MG3500 coding/decoding system single-chip 1 behind the digital signal ITU-R.BT 1120 and compresses processing.Look audio A/D translation interface chip 3 and be used for ITU-R BT 656 signals with MG3500 coding/decoding system single-chip 1 output and change into behind the analog video signal, be convenient to the site operation commissioning device by the output of BNC binding post.Looking audio A/D translation interface chip 3 is used for that 1 road simulated audio signal is converted into digital signal and gives MG3500 coding/decoding system single-chip 1 and handle the back and give the far-end calling party by network, the 1 way word audio signal that the remote subscriber of simultaneously MG3500 coding/decoding system single-chip 1 being received by network transmits is converted into analog signal and outputs on the audio amplifier, thereby realizes intercommunication.

The operation principle of network digital video server described in the utility model is as follows: the light signal of camera lens being brought by high definition inductor 2 converts to be given MG3500 coding/decoding system single-chip 1 behind the digital video signal ITU-R.BT 1120 and compresses processing, and the vision signal after the compression is sent to far-end for user's real time monitoring and preserve by network.

In order to make the purpose of this utility model, technical scheme and advantage clearer, embodiments more of the present utility model are described in detail below in conjunction with drawings and Examples.

Fig. 3 has provided separate unit application scenarios of the present utility model, and the far-end client can pass through network displaying live view high definition web camera.Can be by this high definition web camera of network settings; Can be by the rotation of network control The Cloud Terrace; 1 the tunnel reports to the police input also can equipment taking alarm and catch alarm signal, capture alarm signal after, the high definition web camera can be by warning output channel startup alarm lamp, the image that also can capture is at that time issued the far-end client by the form of network or mail.

Fig. 4 has provided many application scenarioss of the present utility model, and this is an actual monitored field application scenarios with the most use.Hundreds and thousands of high definition web cameras link together by the form of network, manage by back-stage management server, such as acting server, forwarding server, central controller.This application scenarios is more suitable in the large-scale monitoring project of " safe city " this class, management by turnkey console software, can accomplish multistage (province,, city) management, Permission Levels at different levels can be accomplished difference, and the intellectual analysis function that the high definition web camera provides lowers the labor management cost to greatest extent.

Be described in detail although it is pointed out that right the utility model here, with regard to this area staff, the similar modification of the class Sihe of making on this basis all should belong to the utility model protection range.

Claims

1. high definition web camera, include camera lens, cabinet, surface-mounted integrated circuit and external power supply, it is characterized in that: described surface-mounted integrated circuit is provided with H.264HD codec chip, also is provided with the DDR memory, NAND FLASH memory, the high definition inductor that are electrically connected with codec chip H.264HD, looks audio A/D translation interface chip, RS232 serial interface chip and RS485 serial interface chip; Described H.264HD codec chip is a MG3500 coding/decoding system single-chip.

2. high definition web camera according to claim 1 is characterized in that: described NAND FLASH memory is a program storage, and size is 16MB.

3. high definition web camera according to claim 1, it is characterized in that: described camera lens links to each other with the high definition inductor, after light signal imports the high definition inductor into by camera lens, convert digital signal to by the high definition inductor again and import MG3500 coding/decoding system single-chip into.

4. high definition web camera according to claim 1 is characterized in that: described looking also is connected with 1 intercommunication input signal binding post and 1 intercommunication output signal binding post on audio A/D translation interface chip.

5. high definition web camera according to claim 1 is characterized in that: described looking on audio A/D translation interface chip also is connected with 1 video output signals binding post.

6. high definition web camera according to claim 1 is characterized in that: described serial interface chip is the DIO interface type.

7. high definition web camera according to claim 1 is characterized in that: described MG3500 coding/decoding system single-chip also is connected with 1 tunnel warning input and 1 tunnel warning output.

8. high definition web camera according to claim 1 is characterized in that: described MG3500 coding/decoding system single-chip also is connected with a real-time clock module.

9. high definition web camera according to claim 1 is characterized in that: described MG3500 coding/decoding system single-chip also is connected with an Ethernet interface.