Patent · US Expired

Television signal transmission system utilizing TDMA technique

US5027207A · kind A · utility

2Cited by
6References
11Claims
0Family size

Assignees

Inventors

Key dates

Filing dateSep 21, 1989
Grant dateJun 25, 1991
Priority date
Expiry dateSep 21, 2009

Classification

  • Technology area (CPC H)Electricity
  • CPC primaryH04N7/087
  • WIPO fieldAudio-visual technology
  • WIPO sectorElectrical engineering

Abstract

A televison signal transmission system comprising transmitting stations and receiving stations. Each transmitting station has a signal-transmitting circuit and a signal-superposing circuit. The signal-superposing circuit superposes a discriminant signal on a television signal during a vertical-blanking interval of the television signal. The discriminant signal is required for selecting the television signal. The signal-transmitting circuit inserts the television signals, containing the discriminant signal, into the communication channel assigned to the transmitting station, and then transmits the television signal to the receiving stations. Each receiving station has a signal-receiving circuit, a signal-detecting circuit, and a signal-selecting circuit. The signal-receiving circuit receives the television signals transmitted from the transmitting stations. The signal-detecting circuit detects the discriminant signals from television signal in each communication channel received by said signal-receiving circuit. The signal-selecting circuit selects the television signal inserted in the desired communication channel from among the television signals received by the signal-receiving c…

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.