The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 11, 2024
Filed:
Dec. 22, 2022
Seiko Epson Corporation, Tokyo, JP;
Kohei Beppu, Saitama, JP;
Takehiro Yamamoto, Matsumoto, JP;
SEIKO EPSON CORPORATION, , JP;
Abstract
A circuit device includes a waveform-shaping circuit that waveform-shapes an oscillation signal and provides an output clock signal based on a clock signal. A bias voltage output circuit of the circuit device provides a bias voltage of the oscillation signal that is input to the waveform-shaping circuit. A comparator of the circuit device compares a DC voltage obtained by smoothing the clock signal with a reference voltage. A logic circuit of the circuit device sets an adjustment value of the bias voltage. In a test mode of the logic circuit, the logic circuit changes the adjustment value to determine a set value of the adjustment value based on output of the comparator when the adjustment value is changed and stores the determined set value in a storage circuit.