Power saving device
AssigneeNEC Corporation
InventorKazuhiro Kurihara
Life of this patent
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Abstract
A power saving device of the present invention includes a first demodulation circuit for selectively demodulating modulated signals derived from at least two different systems. A second demodulation circuit demodulates only one of the modulated signals. A detection circuit detects a control signal out of any one of the modulated signals. A controller selects, based on the control signal detected by the detection circuit, either one of the first and second demodulation circuits while deactivating the other demodulation circuit. The device is capable of saving power during receipt of an FM (Frequency Modulation) modulated signal and preventing communication quality from being lowered when signal strength is low.
Claims8
A power saving device comprising:
- first demodulating means for selectively demodulating modulated signals derived from at least two different systems;
- second demodulating means for demodulating only one of the modulated signals;
- detecting means for detecting a control signal out of any one of the modulated signals;
- and
- control means for selecting, based on the control signal detected by said detecting means, either one of said first demodulating means and said second demodulating means while deactivating the other demodulating means.
Dependencies are inferred from the claim text.