| Hebei Radio and Television Network Group Limited was formerly Qinhuangdao Bohai Online Information Network Co., Ltd., established in 1993, so far has been 20 years of history, from the common antenna, cable television, has been developed to digital television, HDTV, and two-way broadband business. In 2007 the city built a successful digital TV front-end and the beginning of September the same year as a whole pan of digital television. With the steady advance of digital television, we are trying to explore the two-way interactive services represented a new profit model, therefore, interactive digital television system will be created.First, the combined company’s actual business processes interactive television system uses a pump and external video memory combined with the way the program is stored. By background management system, video servers, IP-QAM, media asset management systems and application servers, billing systems and other interactive services together constitute the digital TV interactive services platform. ISA-based software system architecture, secure, reliable, and compatibility.Secondly, based on the company’s basic business conduct in-depth research on video coding, graphics geometry transport stream, the stream starts, inverse telecine, and put forward the specifications and requirements. In order to ensure the largest possible compatible decoder and other stream processors, the interlaced original transport stream encoder includes a macroblock for motion field prediction and the frame image based on, in order to optimize the coding efficiency.Finally, according to the company’s data security requirements designed redundancy and backup systems. ROSEHA through third-party software as hot standby system, dual automatic error detection system server switching between each other. To ensure detection of the correctness of the detection time, detection time interval, number of times of detection gradually adjusted to ensure its safety factor automatic switching. |
PDF Full Text Request