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. 28, 2000
Filed:
Sep. 29, 1998
Satoru Ito, Aichi, JP;
Kabushiki Kaisha Toyoda Jidoshokki Seisakusho, Kariya, JP;
Abstract
A sensor drive unit drives a sensor with an electric current. A differential current generation unit outputs a current which changes with a temperature. A compensation current output unit includes a plurality of current generation circuits. Each current generation circuit generates a current proportional to a current output from the differential current generation unit. Each current generation circuit has a transistor switch. Each transistor switch is controlled for its ON/OFF state according to input from terminals Ts0, Ts1, . . . The information input to the terminals Ts0, Ts1, . . . is stored in the memory. The compensation current output unit adds the output from the current generation circuits corresponding to the transistor switches in the ON state, and outputs the result as a sensitivity compensation current Its. The sensitivity compensation current Its is applied to the sensor.