US Patent No: 5,737,706
Number of patents in Portfolio can not be more than 2000
Power system supporting CDPD operation
Stats
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Apr 7, 1998
Issued date -
Aug 3, 1995
filing date -
08/510,732
serial no -
In Force
status
Importance
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Abstract
A portable radio telephone handset includes the capability of operating as a data transfer terminal as well as an analog cellular telephone subscriber station. Two modes of operation are available in the handset, and a analog cellular communication mode and a Cellular Digital Packet Data (CDPD) mode. A controlled processor in the handset is used to program the power supply to follow a prioritized, high efficiency operating cycle, preferably tracking CDPD active/sleep mode duty cycle. The power supply has the capability of providing 120 volts AC output for other communication systems. The availability of 120 volts output is programmed to track the functions of the CDPD operation and Advanced Mobile Phone Service (AMPS) operation.
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First Claim
Related Publications
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International Classification(s)
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Cited Art
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