Production summarizes: 　　Style: Goldvision's third generation series video/audio compression capture card. 　　Criterion of video compression: H. 264/MPEG-4, the ratio of compression is very high, the quality of the picture have advanced greatly compared with the second-generation production. 　　Video compression chip: DSP processor 　　Video decode chip: TW2835 　　Supporting system: PAL, NTSC

Production style: JW8004HC (4 channels all real-time audio and video in-phase compression card) JW8008HC (8 all real-time channels audio and video in-phase compression card)

Production performance: JW8004HC compression card is the first using of Techwell2835 Co. Newest forward ending video& audio controller to research and develop successfully in the field, having more advantages compared with the second-generation series –JW6000. 1. The precision of video ADC is 10 bits, the quality of the picture is in focus and bright. 2. The high quality of 4H pectination filter, the sawtooth filter in reverse and the dropper of confusion, which reduced the video codes in wide breadth. 3. The lower power consume, the production is more stability. 4. The upgrading of performance is getting along with the higher cost performance.

The ratio of compression is high; the quality of picture is good The preview of picture is hang together and fluency Accomplished 4/8 channels video compression picture in real-time. Accomplished 4/8 channels voice compression in real-time. Accomplished the compound of video codes and voice codes Picture and the voice is always in –phase. Accomplished the compression and compound of video single and voice single on the card independent on the card. (PAL mode: IF 25f/s, NTSC mode: IF 30f/s), one PC can support 32 channels. Supporting moving sense, time generator, WATERMARK Setting the ratio of frame and the quality of picture dynamic , Do not need to start and stop coding. Setting the brightness, contrast and the chroma of the video single. Supporting several control mode of codes(CBR, VBR, Hybrid), customize the quality rate and the restriction of the most code ratio. Support PROFILE setup mode.

Production technical parameter:

1) Conforms to the PCI 2. 1 standards

2) The criterion of video compression: H. 264 (MPEG-4/part10)

3) Video input: the complex of 1/24 channels video single

4) Supporting system: PAL, NTSC

5) Resolution : PAL： 176*144(QCIF), 352*288(CIF), 704*288（2CIF, HD card）, 704*576（D1, HD card） NTSC：176*120(QCIF), 352*240(CIF), 704*240(2CIF, HD card), 704*480（D1, HD card）

6) The ratio of frame: 25F/S, 30F/S

7) Output code rate: 40kbps-2000kbps

8) The criterion of voice compression: G. 723/G. 726/G. 729 9) Input voice: the input of 1/24 channels voice circuitries

10) The sampling rate: 8/16 KHz

11) Output code rate: 16/32Kbps

12) Audio: single voice channel

13) The input impedance of video: 600Ω

14) The input scope of audio: Vp-p=2. 0V，the range of volume control 80db

15) Video input interface: BNC connector jack

16) The input impedance of audio: 75Ω

17) Video input scope: Vp-p=1. 0V

18) Power consume: about 1W per channel

Product application and development: 　　Application : digital video/ audio monitoring, video& audio capture and compress 　

Development:

1) Offering the completely SDK exploiture packages, DEMO software it source programme

2) Offering the completely internet SDK, the delay time is less than 1 second. The client can open more than 16 channels.

3) Supporting Windows NT/2000/XP/2003 Server, LINUX

4) Using with JW6000D4 decodes, picture and voice can export to monitor and TV, supply the complete solve project to network digital monitor. 　　

Post-sale and technical support

1) Apply with 24 hours technical supporting(telephone, mail, Q/MSN is always on line. )

2) All products 3 months exchange guaranteed, a year maintenance, thelifelong is responsible to service.