Satellite signal reception device, timekeeping device, and satellite signal reception method
AssigneeSeiko Epson Corporation
InventorTeruhiko Fujisawa
Life of this patent
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Abstract
A satellite signal reception device according to an aspect of the invention comprises a reception operation unit that executes a reception operation process to receive a satellite signal transmitted from a positioning information satellite and generates positioning information from the satellite signal. The satellite signal has precise and coarse information orbit periods containing precise and coarse orbit information respectively for the positioning information satellite. The reception operation unit executes the reception operation process in the precise orbit information period, uses the coarse orbit information period as a suspended reception period, and pauses at least a part of the reception operation process in the suspended reception period.
Claims9
A satellite signal reception device, comprising:
- a reception operation unit that executes a reception process to receive a satellite signal transmitted from a positioning information satellite;
- the satellite signal having a repeating information period including a first sub-period containing satellite correction information, a second sub-period containing precise orbit information, and a third sub-period containing coarse orbit information,
- wherein the reception operation unit executes the reception process in the second sub-period, suspends at least part of the reception process in the third sub-period, executes the reception process in a first occurrence of the first sub-period, and suspends at least part of the reception process in subsequent first sub-periods.
A satellite signal reception method that receives a satellite signal transmitted from a positioning information satellite, the satellite signal having a repeating information period including a first sub-period containing satellite correction information, a second sub-period containing precise orbit information, and a third sub-period containing coarse orbit information, the satellite signal reception method comprising:
- executing a reception process in a first occurrence of the first sub-period and in the second sub-period;
- and
- suspending at least part of the reception process in the third sub-period and suspending at least part of the reception process in the subsequent first sub-periods.
Dependencies are inferred from the claim text.