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:
Apr. 21, 1992
Filed:
Jan. 30, 1990
Masayuki Aoki, Ichinomiya, JP;
Kabushiki Kaisha Toshiba, Kanagawa, JP;
Abstract
A microcomputer-based control device for microwave ovens includes a timer defining an operation period of a magnetron and incorporated in the microcomputer, an encoder generating electrical pulses, the number of which is in accordance with an amount of angular displacement of an operation knob, the encoder being independent of the microcomputer, first and second semiconductor switches for starting an operation of the magnetron in response to either any one or a plurality of a pulse train generated by the encoder, the semiconductor switches being incorporated in the microcomputer, and a counter for setting, at the timer, a cooking period in accordance with the numer of pulses of the pulse train generated by the encoder.