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:
Nov. 17, 2020
Filed:
Sep. 26, 2019
Denso Corporation, Kariya, JP;
Takamoto Watanabe, Kariya, JP;
DENSO CORPORATION, Kariya, JP;
Abstract
An A/D conversion circuit converts an analog signal into numerical data. The A/D conversion circuit includes: a pulse delay circuit that includes an odd number of delay units connected in series, and inverting and delaying a pulse signal, and that changes the numeral number of the delay units which the pulse signal passes through in accordance with a value of the analog signal; latch circuits that synchronize the pulse signal with sampling clocks, and latch the pulse signal; encoders that set a position of the pulse signal to the numerical data by circulating encode values periodically set in order from an initial value to a final value to synchronously sample the encode values; subtractors that calculate each of differences between a previous value and a current value; and an adder that adds subtraction results. The encode values are set to be shifted between at least two encoders.