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. 02, 2020
Filed:
Oct. 26, 2017
Renesas Electronics Corporation, Tokyo, JP;
RENESAS ELECTRONICS CORPORATION, Tokyo, JP;
Abstract
It is possible to detect a failure in a temperature sensor while preventing enlarging of a circuit scale. A temperature measurement circuitincludes temperature sensorsand, and a comparator. The temperature sensorincludes a temperature detection unitincluding a resistive element, a resistance value of which varies in accordance with temperature changes, and an AD converter which converts a voltage of the temperature detection unitinto a temperature digital value D. The temperature sensorincludes a ring oscillatorwhich oscillates at a cycle that is temperature dependent, and generates a digital value Dbased on an oscillating signal output by the ring oscillator. The comparatorcompares the temperature digital values Dand D, and outputs a signal indicating whether the temperature sensoris normal or not based on a comparison result.