随着技术的发展、政策与用户需求的推动,电信、终端厂家及互联网视频服务商纷纷抢占电视大屏终端市场,对广电传统视频业务造成了强烈冲击。在此背景下,广电运营商应以互联网思维为工具,关注用户需求。本文以质量功能展开(QFD,Quality Fu...随着技术的发展、政策与用户需求的推动,电信、终端厂家及互联网视频服务商纷纷抢占电视大屏终端市场,对广电传统视频业务造成了强烈冲击。在此背景下,广电运营商应以互联网思维为工具,关注用户需求。本文以质量功能展开(QFD,Quality Function Deployment)法为理论指导,从终端产品(遥控器)切入,对用户进行了需求获取、识别与分析的研究,从而提出了遥控器功能优化的几点建议,希望为公司进一步完善产品服务、优化用户体验提供借鉴。展开更多
Driven by the rapid development of agricultural science and technology, many techniques have been developed rapidly, especially the development of broadcasting technology which earth-shaking changes have taken place. ...Driven by the rapid development of agricultural science and technology, many techniques have been developed rapidly, especially the development of broadcasting technology which earth-shaking changes have taken place. The advent of digital broadcasting technology makes the broadcast technology enter a new stage. With its low energy consumption and large coverage area, digital broadcasting technology was widely welcomed by the broadcast television industry. This paper analyzes digital audio broadcasting, multimedia digital broadcasting and digital AM broadcasting, and further concretely elaborates the application prospects of digital broadcasting technology.展开更多
In Bangladesh, more than a dozen of private TV channels are operating and about 10 new channels are waiting with green signal for transmission. Bangladesh Television （BTV）, the only government owned and administered...In Bangladesh, more than a dozen of private TV channels are operating and about 10 new channels are waiting with green signal for transmission. Bangladesh Television （BTV）, the only government owned and administered, and known as structurally a biased institution serves the audience the public service information most. At the same time it serves purposes of incumbent government. Public information （PI） broadcast means broadcasting towards public welfare which may bring about change in the betterment of life and work of people. Its main focus would be on information, education, and motivation values rather than entertainment. In case of information, dissemination, and documentation, all private TV channels in Bangladesh serve more entertainment and less public service information, whereas, BTV＇s focus is evident on more PI. The owners and operators of private channels think first of their business profit as well as pressure from government and political parties. During formulating planning and strategies or building program content, they become cautious as they fear that the government become angry and shut down the channel.展开更多
Transmitter identification(TxID) technique is used to diagnose the operation status of radio transmitters in DTV distributed transmission network.A new TxID method for digital video broadcasting-handheld (DVB-H) syste...Transmitter identification(TxID) technique is used to diagnose the operation status of radio transmitters in DTV distributed transmission network.A new TxID method for digital video broadcasting-handheld (DVB-H) system is proposed.Watermark is embedded in the DVB-H signal to form the composite signal.According to watermarking theory we demonstrate the required signal level for watermarking signal to achieve given bit error probability under different circumstance.By selecting the reference pattern to generate watermarking signal,peak-to-average power ratio(PAPR) of the transmitted signal can be improved.Simulation results show that even in wireless situation the receiver can distinguish the watermarking signal with low embedding strength, and distortion to the host signal can also be ignored.展开更多
文摘随着技术的发展、政策与用户需求的推动,电信、终端厂家及互联网视频服务商纷纷抢占电视大屏终端市场,对广电传统视频业务造成了强烈冲击。在此背景下,广电运营商应以互联网思维为工具,关注用户需求。本文以质量功能展开(QFD,Quality Function Deployment)法为理论指导,从终端产品(遥控器)切入,对用户进行了需求获取、识别与分析的研究,从而提出了遥控器功能优化的几点建议,希望为公司进一步完善产品服务、优化用户体验提供借鉴。
文摘Driven by the rapid development of agricultural science and technology, many techniques have been developed rapidly, especially the development of broadcasting technology which earth-shaking changes have taken place. The advent of digital broadcasting technology makes the broadcast technology enter a new stage. With its low energy consumption and large coverage area, digital broadcasting technology was widely welcomed by the broadcast television industry. This paper analyzes digital audio broadcasting, multimedia digital broadcasting and digital AM broadcasting, and further concretely elaborates the application prospects of digital broadcasting technology.
文摘In Bangladesh, more than a dozen of private TV channels are operating and about 10 new channels are waiting with green signal for transmission. Bangladesh Television （BTV）, the only government owned and administered, and known as structurally a biased institution serves the audience the public service information most. At the same time it serves purposes of incumbent government. Public information （PI） broadcast means broadcasting towards public welfare which may bring about change in the betterment of life and work of people. Its main focus would be on information, education, and motivation values rather than entertainment. In case of information, dissemination, and documentation, all private TV channels in Bangladesh serve more entertainment and less public service information, whereas, BTV＇s focus is evident on more PI. The owners and operators of private channels think first of their business profit as well as pressure from government and political parties. During formulating planning and strategies or building program content, they become cautious as they fear that the government become angry and shut down the channel.
文摘Transmitter identification(TxID) technique is used to diagnose the operation status of radio transmitters in DTV distributed transmission network.A new TxID method for digital video broadcasting-handheld (DVB-H) system is proposed.Watermark is embedded in the DVB-H signal to form the composite signal.According to watermarking theory we demonstrate the required signal level for watermarking signal to achieve given bit error probability under different circumstance.By selecting the reference pattern to generate watermarking signal,peak-to-average power ratio(PAPR) of the transmitted signal can be improved.Simulation results show that even in wireless situation the receiver can distinguish the watermarking signal with low embedding strength, and distortion to the host signal can also be ignored.
