The company is mainly engaged in scientific research , development , manufacture , operation and international trade of cable tv broadband cisn product , network software , network system engineering , series product of digital tv front end , digital satellite receiver , digital cable tv set - top box , optical transmission equipment , digital tuner , optical electronic devices , etc 公司主要从事有线电视宽带综合信息网络产品、网络软件、网络系统工程、数字电视前端系列产品、数字卫星接收机、数字有线电视机顶盒、光传输设备、数字调谐器、光传输器件的科研开发、生产制造、经营销售和国际贸易业务
Motorola has three divisions : the mobile - devices operation that produces cellphones ; the enterprise - and - government division that makes public - safety radios and hand - held devices for workers on the road ; and the home - and - networks division that makes cable - television set - top boxes and telecommunications - network gear 摩托罗拉包括三个业务部门:生产手机的移动装置运营部门,为公路作业人员提供公共安全无线电设备和手持装置的企业政府部门,以及制造有线电视机顶盒和电信网络装置的家庭网络部门
A nationwide survey report conducted by the academy of broadcasting science , sarft of china in 2002 ranked dvn s branded set top boxes the highest in adoption rate amongst tv operators in the country . in 2004 , dvn was named " the best set top box " by the first " digital tv public polls " , and awarded " top quality brand " in digital tv market by the " china survey on customer satisfaction " 根据中国广播科学研究院二零零二年的有线数字电视机顶盒技术经济分析研究报告，天地数码的柏视通机顶盒为各地运营商选用率最高的终端产品品牌产品于二零零四年在首届数字电视公众评选中荣获最佳机项盒，并于首届中国市场产品质量满意度调查中荣获机项盒市场的品质信誉第一品牌。
The task is based on st ’ s sdtv channel decoder solution with a highly integrated single - chip fully digital qam demodulation stv0297 . chapter 1 introduced the interrelated background of this item ; chapter 2 introduced the coding and decoding theory about channel ; chapter 3 described the hardware structure , the function , the realizing principle and the method of the pcb design ; the scheme and flow chart of software design are also described in detail in chapter 4 ; chapter 5 described the testing and analyzed the result ; at last , chapter 6 presented the summing - up of this dissertation 第一章介绍了本项目的相关背景知识;第二章简单描述了信道编解码原理;第三章系统地介绍了标准清晰度数字电视机顶盒信道解码器的硬件构成、功能和实现原理,并介绍了电路板的设计方法;第四章对信道解码的软件设计方案和实现流程也做了比较详细的阐述;第五章给出了测试结果并对其进行了分析;第六章对本论文进行了总结。
Dvn s stb is well recognized in china for its quality and extensive usage . a nationwide survey report conducted by the academy of broadcasting science , sarft of china in 2002 ranked it the most widely adopted stb by tv operators in the country . in 2004 , dvn received the " best set top box " award in the first digital tv public survey , as well as a " top quality brand " honour in the stb category in the first china consumer products quality survey 根据中国广播科学研究院二零零二年的有线数字电视机顶盒技术经济分析研究报告，天地数码的柏视通机顶盒为各地运营商选用率最高的终端产品品牌产品于二零零四年在首届数字电视公众评选中荣获最佳机项盒，并于首届中国市场产品质量满意度调查中荣获机项盒市场的品质信誉第一品牌。
