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公司简介

GAO Research Inc.位于加拿大第一大城市多伦多市。公司成立于1992年,是具有世界领先水平的、研制和开发嵌入式通讯软件的高科技有限公司。它为世界各地的网络、通讯、电子和半导体公司提供优质的嵌入式通讯软件。GAO可为用户提供最优化的、易使用的DSP算法、软件模块和软件包。这些软件及算法可在定点和浮点数字信号处理器(DSP)和微处理器上运行。OEM厂家在获得了GAO的授权或者成为GAO的合作伙伴后,可使用GAO的软件去设计满足用户要求的产品。

解决方案及产品

近年来,随着微电子技术和数字信号处理技术的发展,软件模块在性能价格上的优势使得对由软件实现通讯功能的产品的需求越来越高。相比于只有固定功能的芯片组,使用软件实现通讯功能具有极大的灵活性,软件的升级也十分方便。GAO为用户提供全套的可在各类数字信号处理器和微处理器上运行的软件,包括调制解调器、传真、电话、语音等。在此基础上,GAO最近还研制开发了Fax Relay, VoIP以及最新的通过电话线高速上网的ADSL等解决方案。GAO的产品曾被30多家具有国际影响的业界刊物报导过。GAO的产品可以以模块或软件包的形式购买。一个模块实现的是一种特定的标准功能,如V.92,G.723.1等等。一个软件包则包括一组模块,其中每个模块执行一种功能,各个模块组合起来去完成所要求的任务。GAO对用户的软件授权可以是一个模块、一个GAO现有的软件包或由用户指定的特定软件包。GAO一直致力于提高其运行程序的性能,以满足用户对MIPS/MHz和内存的使用要求。

应用实例

GAO的软件产品可应用于许多领域,主要包括网络电话、modem pool、MP3播放机、无线通讯设备、PC机用modem、机顶盒、PDA、各种刷卡终端、多功能电话机等等。

通讯软件的领先者

GAO技术力量雄厚,软件产品支持多种平台和语言。科学严谨的管理、先进的测试设备和优质的技术服务,使GAO拥有了众多世界级的用户,GAO已成为嵌入式通讯软件市场的领导者。

多领域的专家

GAO精通于复杂的通讯软件并致力于不同技术的开发,如调制解调器、传真、电话和语音软件。GAO开发的定点和浮点两大类通讯软件支持目前已商品化的数字信号处理器和微处理器。

严格准确的测试

GAO装备了最新技术发展水平的测试仪器,包括TAS系统、Consultronics系统、Rochelle系统和Telegra系统。所有的modem和传真软件均通过了ITU标准的严格测试,所有的语音软件都通过了ITU规定的测试向量。

世界级的用户

GAO的用户来自世界各地,其中许多是处于世界领先水平的电子、通讯和半导体公司。这些公司在获得了GAO的授权许可下,将GAO的软件集成到各自公司的电子产品中,以实现通讯功能。GAO的软件产品适用于许多地区,包括北美、澳洲、欧洲和亚洲。

软件产品

1) 信息工程部
Modem: ADSL, G.Lite, V.92,V.90, V.34, V.32bis/V.32, V.22bis/V.22, V.23, V.21, Bell 212A, Bell 103
Modem Protocols: V.42, V.42bis, V.44, V.8, V.8bis, AT Commands
Fax, Fax Relay: V.34, V.17, V.29, V.27ter, V.21 Channel 2, T.4, T.30, T.38
Telephony: LEC, AEC, AGC, CP, CID Type I & II, DTMF, VAD, CNG
Speech: G.729A, G.729B, G.729, G.726, G.723.1, G.722, G.711

网络基础部

住宅/SOHO网关: ADSL, G.lite, Voice over DSL, Fax over DSL, fallback to V.92
VoIP: LEC, VAD, CNG, Tone, 语音侦测及产生,声音编解码器,信息包的重组、丢失侦测、抖动缓冲器 和时序。
RAS: 多通道V.92, Voice over IP, and Fax over IPv

支持的DSP和Microprocessor

  • Texas Instruments Inc. xDAIS compliant and available for TMS320C5000 & TMS320C6000 families of DSP.
  • Analog Devices ADSP-BF53x(Blackfin), ADSP-21xx, SHARC
  • CEVA DSP Cores, Motorola 56800/E, Infineon's Carmel.
  • ST20/ST40 Core, Intel XScale based processor, StrongARM, SuperH, Trimedia, Power PC, ARC, Tricore, Mitsubishi, ARM, SPARC, MIPS.
  • Pentium, fixed point & floating point C
  • 可与MP3, JPEG, MPEG, TCP/IP,大多数RTOS和网页浏览器集成















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