Radio Signal Receiver, Electronic Device, and Radio Signal Receiving Method
AssigneeSeiko Epson Corporation
InventorKatsuyuki Honda
Life of this patent
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Abstract
A radio signal receiver includes a GPS receiver circuit, an environment detection circuit (charging state detection circuit and voltage detection circuit) that detects is in an environment suited to the radio signal receiver receiving satellite signals, and a control circuit. The control circuit has a first reception control unit that operates the GPS receiver circuit when the radio signal receiver is determined to be in an environment suited to receiving satellite signals based on the result output by the environment detection circuit, a second reception control unit that operates the GPS receiver circuit at a scheduled reception time, and a switching unit that switches operation between the first reception control unit and second reception control unit.
Claims20
A radio signal receiver that receives radio signals, comprising:
- a reception circuit that receives the signals;
- an environment detection circuit that detects whether or not the radio signal receiver is in an environment suited to signal reception;
- and
- a control circuit that controls the reception circuit and the environment detection circuit, and includes
- a first reception control unit that operates the reception circuit when the radio signal receiver is determined to be in an environment suited to signal reception based on the detection result from the environment detection circuit,
- a second reception control unit that operates the reception circuit at a preset scheduled reception time, and
- a switching unit that switches operation between the first reception control unit and second reception control unit.
A radio signal receiving method of a radio signal receiver that receives signals, comprising:
- a first reception control step of receiving the signal when the radio signal receiver is determined to be in an environment suited to signal reception;
- a second reception control step of receiving the signal at a previously set scheduled reception time;
- and
- a switching step of switching between the first reception control step and the second reception control step.
Dependencies are inferred from the claim text.