Timing signal output device, and electronic apparatus
AssigneeSeiko Epson Corporation
InventorsJun Shiina, Yoshiyuki Maki
Life of this patent
Estimating the term…
Abstract
A timing signal output device includes a receiver configured to output a reference signal on the basis of satellite signals received from a plurality of positioning satellites, an oscillator configured to output a clock signal, and a processor configured to switch, on the basis of statistical value information concerning a statistical value obtained by performing statistical processing of elevation angles of the plurality of positioning satellites, a first mode for generating a timing signal based on the reference signal and a second mode for generating a timing signal based on the clock signal.
Claims8
A timing signal output device comprising:
- a receiver configured to output a reference signal on the basis of satellite signals received from a plurality of positioning satellites;
- an oscillator configured to output a clock signal;
- and
- a processor configured to switch, on the basis of statistical value information concerning a statistical value obtained by performing statistical processing of elevation angles of the plurality of positioning satellites, between a first mode for generating a timing signal based on the reference signal and a second mode for generating a timing signal based on the clock signal,
- wherein the statistical value is any one of an average of the elevation angles of the plurality of positioning satellites, a median of the elevation angles of the plurality of positioning satellites, and a mode of the elevation angles of the plurality of positioning satellites, and wherein the elevation angles are previously calculated and stored using at least one of (i) ephemeris data for the plurality of positioning satellites and (ii) known positions of the positioning satellites.
An electronic apparatus comprising a timing signal output device, the timing signal output device comprising:
- a receiver configured to output a reference signal on the basis of satellite signals received from a plurality of positioning satellites;
- an oscillator configured to output a clock signal;
- and
- a processor configured to switch, on the basis of statistical value information concerning a statistical value obtained by performing statistical processing of elevation angels of the plurality of positioning satellites, between a first mode for generating a timing signal based on the reference signal and a second mode for generating a timing signal based on the clock signal,
- wherein the statistical value is any one of an average of the elevation angels of the plurality of positioning satellites, a median of the elevation angels of the plurality of positioning satellites, and a mode of elevation angels of the plurality of positioning satellites, and wherein the elevation angles are previously calculated and stored using at least one of (i) ephemeris data for the plurality of positioning satellites and (ii) known positions of the positioning satellites.
Dependencies are inferred from the claim text.