Telecommunications – Interference signal transmission
Patent
1996-06-12
1999-12-28
Kostak, Victor R.
Telecommunications
Interference signal transmission
348 12, 348212, H04N 718, H04H 100
Patent
active
060093056
ABSTRACT:
In each of two video appliances mutually connected by means of a transmission line, video, voice and other signals are converted to digital signals, subjected to time-division multiplexing and time-base compressing operations to generate a transmission signal having a repetition of signal presence and absence periods, and then the transmission signal is transmitted to the transmission line. While the transmission signal of the signal absence period is transmitted from one of the video appliances to the transmission line, the transmission signal of the signal presence period is transmitted from the other video appliance to the transmission line; whereas, while the transmission signal of the signal presence period is transmitted from one video appliance to the transmission line, the transmission signal of the signal absence period is transmitted from the other video appliance to the transmission line. In each of the video appliances, there is stopped at least one of the operation of a reception circuit of the video appliance during transmission of the transmission signal of the signal presence period from a transmission circuit to the transmission line and the operation of the transmission circuit of the video appliance during reception of the transmission signal of the signal presence period transmitted from the reception circuit through the transmission line.
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Hitachi Denshi Kabushiki Kaisha
Kostak Victor R.
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