Harness, Dickey & Pierce, P.L.C.
Oscillation circuit, oscillator, communication device, and method of controlling oscillation circuit
An oscillation circuit includes a first oscillation circuit configured to oscillate a resonator to generate a first oscillation signal, a second oscillation circuit configured to generate a second oscillation signal, a frequency measurement circuit configured to measure a frequency of the second oscillation signal based on the first oscillation signal in a first period in which the first oscillation circuit is in operation, a holding circuit configured to hold a measurement result by the frequency measurement circuit in a second period in which the first oscillation circuit is not in operation, and an oscillation signal generation circuit configured to generate a third oscillation signal based on the second oscillation signal and the measurement result held in the holding circuit in a third period in which the first oscillation circuit starts up, wherein the third oscillation signal is supplied to the first oscillation circuit in the third period.
Seiko Epson Corporation
H H H H H H H H H H H H
H03B H03B H03B H03L H03L H03L H03B H03L H03L H03B H03B H03L
inventional inventional inventional inventional inventional inventional additional inventional inventional inventional inventional inventional
Akio Hideo Hisahiro
Tsutsumi Haneda Ito