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技术文摘：IPTV尚未大热，编解码供给商看重视频监控应用

In and other places of Hangzhou, Qingdao, Fosan pilot IPTV is counted after year, net of telegraphic, Beijing connected Shanghai to roll out this business formally also in not long ago eventually, and country of preexistence of rate of Henan net general rule opened IPTV. This appears adumbrative move is heated up to fry this old science and technology to be about to begin to be in the China with boundless latent capacity to pull open market all-pervading by industry big screen. Very apparent, to organizing decoder supplier for, this not less than is a heart-stirring good news. However, the circumstance looks so hopeful without the surface it seems that. IPTV had be notted heat up greatly, make up decipher supplier to value video monitoring to apply Chinese market to still be in those who await AVS of native land standard to start, we had not seen the market produces the change of materiality. " shadow valuable electron (Shanghai) Li Ying of manager of limited company project expresses, "What accordingly we basically value is monitoring market. This market has the dimensions of billions of one year. " shadow valuable electron (Vweb) is the company of a semiconductor that established in San Jose 1998 by Dr. Sho Long Chen that comes from Taiwan area, dedicated at becoming MPEG the compression of video and undertake to its through the network Gao Hua pledges efficient respect of transmission science and technology is gotten army enterprise. According to saying, this company rolled out what the whole world has Full-D1 resolution the first times (interlaced scanning) MPEG-1, 2, 4 and coder of H.263 sound video (Encoder)VW2005 symphonious video makes up decoder (Codec)VW2010. Return research and development at the same time the VW2000 of MPEG-2 video coder with the smallest whole world. "Will realize video program to transmit through the network compare fire it seems that, but did not have an amount truly. " Li Ying says, "At present our major servicing still comes from market of video supervisory equipment. " she emphasizes, product line monitoring wants than civil monitoring to the requirement of Codec many tall, and on the product line that waits for a company in Intel, IBM, GE, used use an image the video supervisory equipment that valuable electron writes decoder. This alluded actual strength of this company's rich science and technology. Global Codec market is in end was mixed 2002 begin to start at the beginning of 2003. Basically have DSP and ASIC at present two kinds of plan. Heart state apparatus (TI) is former delegate firm. Because pass software to come true, DSP program is accordingly more flexible. But Li Ying points out, for opposite ASIC, this kind of plan is not extraordinary stability however. "For example to imprinting bank note factory for such enterprise, the picture pledges flabby equipment is to cannot be competent product line monitoring works. Competition ability is done not have in the circumstance DSP plan of these high demands. " valuable electron provides the picture ASIC chip. "The advantage of ASIC is systematic science and technology member can use it very quickly to make plan come. " Li Ying continues say, "It offers all sorts of API port, need to call only can. But DSP at least needs to cost the time of double to have thorough knowledge to its. " in addition she still expresses, DSP plan is behaved below case of small yard rate passable, to domestic entertainment, the function still is shown a bit insufficient. TI company is at the beginning of this year the decoder TVP5154 that rolled out resolution of 4 passageways CIF. Nevertheless, former price is relatively a few higher, and it is cheap that the can realize 4 CIF to output likewise VW3010 of valuable electron wants the picture a lot of. Additional, li Ying still discloses, this company is studying the chip of a coder that delivers 4 D1 resolution. "Video monitoring is becoming taller and taller to the requirement of coder. " Li Ying says, "Japan has kept D1 level of its video monitoring, china also is in now him formulate national level. Additional, to D1 resolution, no matter be memory capacity or bandwidth,not be a problem any more to Chinese user, accordingly, we think D1 also is written very likely into GB. " nevertheless, also trade public figure points out, the requirement of science and technology of IPTV and video monitoring is different. Former face terminal user, basically use at video decipher. Because business uses a lot of operation to add the means of machine freely to develop an user, this makes the main weapon that cost advantage makes contention client. Compare with photograph of domestic decoder manufacturer, shadow valuable electron watchs market performance even in the advantage of this respect. And video monitoring circumstance basically uses coder, want to the requirement of ability of science and technology many tall. How commensurate manufacturer competes, also be the challenge that its face.

在杭州、青岛、佛山等地试点IPTV数年之后，上海电信、北京网通终于在不久前也正式推出了这项营业，而河南网公例率先在农村开明了IPTV。这似乎预示着被业界热炒多年的此项科技即将起头在潜力有限的中国拉开市场遍及的大幕。很显然，对于编解码器供给商来说，这不啻为一个振奋人心的好动静。然而，情况似乎没有概况看起来那么乐观。

IPTV尚未大热，编解码供给商看重视频监控应用

中国市场仍旧在期待外乡尺度AVS的启动，咱们还没有看到市场发生本色性的转变。”影玮电子(上海)有限公司项目司理李颖暗示，“是以咱们首要垂青的是监控市场。该市场一年稀有十亿的规模。”

影玮电子(Vweb)是由来自台湾地域的Sho Long Chen博士于1998年在San Jose建立的一家半导体公司，专注于成为MPEG视频的压缩以及经由过程收集对其进行高画质高效率传输科技方面领军企业。据称，该公司推出了寰球第一款领有Full-D1分辨率的(隔行扫描)MPEG-1,2,4以及H.263音视频编码器(Encoder)VW2005和音视频编解码器(Codec)VW2010。同时还研发了寰球最小的MPEG-2视频编码器VW2000。

“经由过程收集来实现视频节目传输看起来比较火，可是并没有真正起量。”李颖说，“今朝咱们的首要营业仍是来自视频监控行动措施市场。”她强调，出产线监控对Codec的要求比民用监控要高的多，而在Intel、IBM、GE等公司的出产线上，都采用了操纵影玮电子编解码器的视频监控行动措施。这暗示了该公司雄厚的科技实力。

寰球Codec市场在2002年末和2003年头起头起步。今朝首要有DSP和ASIC两种方案。德州仪器(TI)是前者的代表厂商。因为经由过程软件来实现，是以DSP方案比较灵敏。可是李颖指出，相对ASIC来说，这种方案却不长短常不乱。“例如对于印钞厂如许的企业来说，画质不稳的行动措施是无法胜任出产线监控工作的。在这些高要求的场所DSP方案没有竞争力。”

影玮电子供给ASIC芯片。“ASIC的好处是系统科技员能够很快操纵它做出方案来。”李颖继续说道，“它供给各类API接口，仅需挪用即可。可是DSP起码需要破费两倍的时候对其进行深切理解。”此外她还暗示，DSP方案在低码率情况下表示尚可，对于家庭娱乐来说，性能还稍显不够。

TI公司在本年头推出了4通道CIF分辨率的解码器TVP5154。不外，前者价钱相对低廉了一些，而影玮电子的同样能够实现四路CIF输出的VW3010则要重价良多。此外，李颖还透露，该公司正在研发四路D1分辨率的一款编码器芯片。“视频监控对编码器的要求正在变得越来越高。”李颖说，“日本已经将D1写入其视频监控尺度，此刻中国也在制订本身的国家尺度。此外，对于D1分辨率来说，无论是存储器容量仍是带宽对中国用户都已经不是问题，是以，咱们认为D1很有可能也被写入中国国家尺度。”

不外，也有行业人士指出，IPTV和视频监控的科技要求是分歧的。前者面向终端用户，首要用于视频解码。因为良多运营商采用免费增机的体例来成长用户，这使得本钱劣势成为争夺客户的首要刀兵。与国内解码器厂商比拟，影玮电子在这方面的劣势还要看市场表示。而视频监控场所首要用到编码器，对科手艺力的要求要高的多。若何同大厂商竞争，也是其面临的挑战。

发布日期：2009-8-4　【返回】