Satellite signal reception device, timekeeping device, and satellite signal reception method for a satellite signal reception device

A satellite signal reception device, comprising:

• a reception unit that captures a positioning information satellite and receives a satellite signal transmitted from the captured positioning information satellite;
• a data acquisition unit that can acquire at least time information based on the satellite signal received by the reception unit;
• and
• a reception mode control unit that controls the reception mode of the reception unit;
• wherein the reception unit includes a correlation unit that determines a correlation between a code used for capturing the satellite signal and the received satellite signal;
• the data acquisition unit includes an operating unit that decodes the received data;
• the reception mode control unit includes a clock control unit that is configured to
• separately control an operating clock of the correlation unit and a process clock of the operating unit,
• select a manual time information reception mode that receives time information based on a manual operation, or an automatic time information reception mode that receives time information automatically;
• switch the process clock of the operating unit between at least a first process clock and a second process clock that is faster than the first process clock,
• switch the operating clock of the correlation unit between at least a first operating clock and a second operating clock that is faster than the first operating clock,
• set the operating clock of the correlation unit to the first operating clock and sets the process clock of the operating unit to the first process clock when the manual time information reception mode is selected as the reception mode, and
• set the operating clock of the correlation unit to the second operating clock and sets the process clock of the operating unit to the first process clock when the automatic time information reception mode is selected as the reception mode.

A satellite signal reception device, comprising:

• a reception unit that captures a positioning information satellite and receives a satellite signal transmitted from the captured positioning information satellite;
• a data acquisition unit that can acquire at least time information based on the satellite signal received by the reception unit;
• and
• a reception mode control unit that controls the reception mode of the reception unit;
• wherein the reception unit includes a correlation unit that determines a correlation between a code used for capturing the satellite signal and the received satellite signal;
• the data acquisition unit includes an operating unit that decodes the received data;
• the reception mode control unit includes a clock control unit that is configured to
• separately control an operating clock of the correlation unit and a process clock of the operating unit,
• select an indoor time information reception mode for acquiring time information when indoors, a mobile time information reception mode for acquiring time information when outdoors and moving, and an outdoor stationary time information reception mode for acquiring time information when outdoors and not moving, as the time information reception mode
• switch the process clock of the operating unit between at least a first process clock and a second process clock that is faster than the first process clock,
• switch the operating clock of the correlation unit between at least a first operating clock and a second operating clock that is faster than the first operating clock,
• set the operating clock of the correlation unit to the second operating clock and sets the process clock of the operating unit to the first process clock when the indoor time information reception mode or the mobile time information reception mode is selected as the reception mode, and
• sets the operating clock of the correlation unit to the first operating clock and sets the process clock of the operating unit to the first process clock when the outdoor stationary time information reception mode is selected as the reception mode.

A satellite signal reception method for a satellite signal reception device that includes a reception unit that captures a positioning information satellite and receives a satellite signal transmitted from the captured positioning information satellite, and includes a correlation unit that determines a correlation between a code used for capturing the satellite signal and the received satellite signal, a data acquisition unit that can acquire time information and positioning information based on the satellite signal received by the reception unit, and includes an operating unit that decodes the received data, and a reception mode control unit that controls the reception mode of the reception unit to at least one of a time information reception mode and positioning information reception mode, the satellite signal reception method comprising:

• setting the reception mode;
• separately controlling an operating clock of the correlation unit and a process clock of the operating unit based on the set reception mode;
• and
• operating the correlation unit and operating unit using the controlled clock signals to receive a satellite signal.