SATELLITE RADIO SIGNAL RECEIVER, ELECTRONIC TIMEPIECE, DATE AND TIME ACQUIRING METHOD AND RECORDING MEDIUM
First Claim
1. A satellite radio signal receiver, comprising:
- a receiving section which receives radio signals from a plurality of satellites and demodulates the signals to identify bits of the demodulated signals as received bits; and
a processor,wherein the processor compares each received bit of the plurality of satellites with estimated bits which are estimated to be received within a possible deviation range from a current date and time acquired as a reception timing of the received bit, so as to obtain comparison result information between the received bits and the estimated bits in relation to deviations within the possible deviation range with respect to each of the plurality of satellites,wherein the processor integrates the comparison result information on the received bits of the plurality of satellites,wherein the processor specifies a deviation that satisfies a predetermined match condition of the received bits and the estimated bits based on the integrated comparison result information, andwherein the processor acquires date and time information based on the deviation that satisfies the predetermined match condition.
1 Assignment
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Accused Products
Abstract
A satellite radio signal receiver includes a receiving section which receives radio signals from satellites and demodulates the signals to identify bits of the demodulated signals as received bits; and a processor. The processor compares each received bit of the satellites with estimated bits which are estimated to be received within a possible deviation range from a current date and time acquired as a reception timing of the received bit to obtain comparison result information between the received bits and the estimated bits in relation to deviations within the possible deviation range with respect to each of the satellites, integrates the comparison result information on the received bits of the satellites, specifies a deviation that satisfies a match condition of the received bits and the estimated bits based on the integrated comparison result information, and acquires date and time information based on the deviation that satisfies the match condition.
2 Citations
20 Claims
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1. A satellite radio signal receiver, comprising:
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a receiving section which receives radio signals from a plurality of satellites and demodulates the signals to identify bits of the demodulated signals as received bits; and a processor, wherein the processor compares each received bit of the plurality of satellites with estimated bits which are estimated to be received within a possible deviation range from a current date and time acquired as a reception timing of the received bit, so as to obtain comparison result information between the received bits and the estimated bits in relation to deviations within the possible deviation range with respect to each of the plurality of satellites, wherein the processor integrates the comparison result information on the received bits of the plurality of satellites, wherein the processor specifies a deviation that satisfies a predetermined match condition of the received bits and the estimated bits based on the integrated comparison result information, and wherein the processor acquires date and time information based on the deviation that satisfies the predetermined match condition. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18)
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19. A date and time acquiring method, comprising:
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a receiving step of receiving radio signals from a plurality of satellites and demodulating the signals to identify received bits of the demodulated signals as received bits; a comparing step of comparing each received bit of the plurality of satellites with estimated bits which are estimated to be received within a possible deviation range from a current date and time acquired as a reception timing of the received bit, so as to obtain comparison result information between the received bits and the estimated bits in relation to deviations within the possible deviation range with respect to each of the plurality of satellites; a comparison result integrating step of integrating the comparison result information on the received bits of the plurality of satellites; a deviation specifying step of specifying a deviation that satisfies a predetermined match condition of the received bits and the estimated bits based on the comparison result information; and a date and time acquiring step of acquiring date and time information based on the deviation that satisfies the predetermined match condition.
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20. A non-transitory recording medium storing a program that is readable by a computer including a receiving section for receiving radio signals from a plurality of satellites and demodulating the signals, the program making the computer function as:
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an identifying section which identifies bits of the demodulated signals as received bits; a comparing section which compares each received bit of the plurality of satellites with estimated bits which are estimated to be received within a possible deviation range from a current date and time acquired as a reception timing of the received bit, so as to obtain comparison result information between the received bits and the estimated bits in relation to deviations within the possible deviation range with respect to each of the plurality of satellites; a comparison result integrating section which integrates the comparison result information on the received bits of the plurality of satellites; a deviation specifying section which specifies a deviation which satisfies a predetermined match condition of the received bits and the estimated bits based on the integrated comparison result information; and a date and time acquiring section which acquires date and time information based on the deviation that satisfies the predetermined match condition.
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Specification