Full digital conditioned receiving method for video broadcost in cable TV network

Application Number: 00124981
Application Date: 2000.09.29
Publication Number: 1284818
Publication Date: 2001.02.21
Priority Information:
International: H04N7/167
Applicant(s) Name: Qinghua Univ.
Address:
Inventor(s) Name: Dai Qionghai;Xu Wenli;Chen Feng
Patent Agency Code: 11201
Patent Agent: luo wenqun
Abstract In the present invention program source is first converted via A/D conversion into moving image code stream, which is scrambled by the control word the control system produces, and the control word is enciphered with enciphered algorithm. The scrambled transmitted stream is then descrambled by the control word, decompressed and decoded to restore digital video and audio signals before final D/A conversion. The present invention has fully digitized processing and transmission process and complete image descrambling without damage and is easy to be accepted by user.