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:
Aug. 30, 1994
Filed:
Oct. 21, 1992
Guoliang Shu, Tokyo, JP;
Weikang Yang, Tokyo, JP;
Wiwat Wongwarawipat, Tokyo, JP;
Sunao Takatori, Tokyo, JP;
Makoto Yamamoto, Tokyo, JP;
Yozan, Inc., Tokyo, JP;
Abstract
An analog calculation circuit has a circuit input for receiving a first input voltage, a circuit output, a first timer, and a second timer. The first timer has a first capacitive coupler, a first RC circuit, and a first threshold circuit for outputting a first timer output voltage. The first threshold circuit has a first threshold input terminal. The first capacitive coupler has a first capacitive coupler input connected to the circuit input, a second capacitive coupler input, and a first capacitive coupler output connected to the first threshold input terminal. The first RC circuit has a first resistance, a first capacitance, a first RC input for receiving a second input voltage, and a first RC output connected to the second capacitive coupler input. The second timer has a second RC circuit, a second threshold circuit for outputting a second timer output voltage to the second RC circuit, and for receiving the first timer output voltage. The second RC circuit has a second resistance, a second capacitance, a second RC input for receiving a third input voltage, and a second RC output connected to the circuit output. A third timer, similar in design to the first timer may also be used in the calculation circuit.