broadcasting service
3.JIM LEHRER (Public Broadcasting Service news anchor): Good evening from the Clark Athletic Center at the University of Massachusetts in Boston.
4.The improved 802.11 MAC protocol of subject to CATV network is used for small area wireless coverage, it is extremely valuable and economical that the operators provide Internet access, TV broadcasting service, data exchange service, video on demand (VOD) service and other normal telecommunication traffic by WLAN as supplying for HFC networks simultaneously.
5.Chapter 4 and chapter 5 are implementation of courseware DRM. In chapter 4, the author gives the implementation of courseware DRM in live broadcasting, which includes the DRM service at the GenBox server part, the authorization service and the GenBox client response.
6.The list includes the telephone and computer systems, electronic mail, word processing, desktop publishing，database management system，two-way cable TV， office-to-office satellite broadcasting，on-line database service，and voice recognition and synthesis. Each of these components is intended to automate a task or function that is presently performed manually. Experts agree that the goal can be accomplished when the computer，communication, and office equipment are networked and an office work can easily access the entire system through a personal computer sitting on his or her desk. Then it will be possible to change substantially the way people work in an office.
8.This text analyses the principle of digital television broadcasting and the composition structure of service information. The text describes the working course of the electronic program guide which is structured by service information and the implementation method of the front of EPG system, details dynamic feedback of EPG, explains the EPG system of realization way and its own advantages and disadvantages on the terminal device of digital TV, introduces the imagination of structuring distributed real-time dynamic EPG database network.
10.Then,the paper explains the use of hybrid fiber-coax for CATV network,and the installation of cable modem,so that CATV can serve dual purposes:TV broadcasting as well as bi-dirctional telephone and data communication,including Internet service in downstream direction,with maximum data rate 10~30Mb/s.
