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2. 发明专利

JPH03227190A CATV SYSTEM 失效
公开(公告)号：JPH03227190A
公开(公告)日：1991-10-08
申请号：JP2149690
申请日：1990-01-31
申请人： FUJITSU LTD
发明人： TANAKA AKIHITO , KAMIYA JUNICHIRO
IPC分类号： H04N17/00 , H04N7/16 , H04N7/173
摘要： PURPOSE:To enhance the transmission quality of incoming information from a subscriber and to send outgoing information accurately and easily by providing a head end and a data receiver to a center and receiving an incoming signal from a subscriber terminal equipment via a telephone network with excellent transmission quality. CONSTITUTION:A head 2 and a data receiver 3 are provided in a system center 1 and an incoming signal from a home terminal HT0 of a terminal equipment provided to a subscriber 4 is received by the data receiver 3 via a telephone network 5. Then each channel picture signal from the center 1 is made equal in its output level by the head end 2 similarly to that of a conventional system and the signal is fed to each subscriber via coaxial transmission amplifiers 10, 11...19. Moreover, an incoming signal from the home terminal HT0 is sent to the telephone network 5 via a telephone protector P1 and sent and decoded by the data receiver 3 of the center 1.

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