Telecommunications – Carrier wave repeater or relay system – Portable or mobile repeater
Patent
1997-12-23
2000-08-29
Tsang, Fan
Telecommunications
Carrier wave repeater or relay system
Portable or mobile repeater
455 131, 455 132, 455427, 455456, 455428, 455 18, 34235701, 34235706, 34235709, 342352, 701226, H04Q 720, H04Q 732
Patent
active
061120545
ABSTRACT:
A satellite position/arrival-time calculating section calculates the arrival date and time at which a communication satellite is to arrive in a communicable area where the communication satellite can communicate with a satellite communication terminal apparatus, and creates communicable date and time information. A timer controls a power supply control circuit in accordance with the arrival date and time information created by the satellite position/arrival-time calculating section. The timer automatically controls the power supply control circuit so as to supply communication power to a satellite communication circuit section while the communication satellite is in the communicable area and so as to stop the supply of the communication power at the time when the communication satellite leaves the communicable area.
REFERENCES:
patent: 3349398 (1967-10-01), Werth
patent: 5446465 (1995-08-01), Diefes et al.
patent: 5574660 (1996-11-01), Diekelman
patent: 5749044 (1998-05-01), Natarajan et al.
Casio Computer Co. Ltd.
Ferguson Keith
Tsang Fan
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