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US 5,473,319 AGranted
Paging receiver
AssigneeNEC Corporation
InventorTakayuki Asai
Life of this patent
Estimating the term…
Abstract
The rise-up time of an intermediate frequency signal generated in a radio receiving unit is detected at each time in intermittent receiving operation. The radio receiving unit is turned on for a period including the rise-up time and a time of the intermittent receiving operation. Consequently, the electric power consumption of a battery for a power supply of the radio receiving unit is decreased.
Claims4
A paging receiver, comprising:
- means for receiving a radio frequency signal to generate a demodulation signal thereof;
- means for processing said demodulation signal to externally represent information included in said radio frequency signal;
- and
- means for controlling the operation of said receiving means to be intermittently turned on, said receiving means being turned on for a period including a rise-up time and a receiving time, said rise-up time being detected by said controlling means, and said receiving time being successively subsequent to said rise-up time.
1 more element
A paging receiver, comprising:
- a radio receiving unit for generating a demodulated signal by demodulating an intermediate frequency signal obtained by mixing a local oscillation signal generated in a local oscillator and a transmitted radio signal;
- a decoder for decoding said demodulated signal to generate a decoded signal, said decoded signal including a synchronization code and an ID code;
- means for representing information in accordance with said ID code in said decoded signal;
- means for detecting a rise-up time of said local oscillator;
- and
- means for controlling the operation of said radio receiver unit to be intermittently turned on such that said radio receiving unit is turned on for a period including said rise-up time and a prescribed selective receiving time.
3 more elements
Dependencies are inferred from the claim text.