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:
Jan. 17, 1995
Filed:
Sep. 16, 1993
Hisashi Tokizaki, Ora, JP;
Sanyo Electric Co., Ltd., Moriguchi, JP;
Abstract
A temperature control apparatus and method which utilizes a characteristic of a temperature detection device which detects temperature over a wide range of changing temperature and makes it possible to control a unit by detecting a wide range of changing temperature of the unit using the single temperature detection device. A temperature detection circuit outputs a voltage corresponding to the resistance value of the temperature detection device, whose resistance value varies with changes in temperature, which voltage is A/D (analog-to-digital) converted into a digital step value. This digital step value is converted to a temperature value using a predetermined mathematical relationship. The temperature control is executed using the converted temperature value and a desired temperature value in the same data form as the converted temperature value.