| 摘要 |
FIELD: communications. ^ SUBSTANCE: video-phone communication is based on cable television networks. At client side attachment and transmitting camera are mounted. In cable networks commutation blocks are positioned - automatic phone stations, provided with input devices. Clients are distributed among client networks, in which all clients are connected to same two-wire line. Each client has transmission frequencies and receipt frequencies for television signals assigned. ^ EFFECT: higher efficiency. ^ 3 dwg |
