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:
Feb. 20, 1996
Filed:
Jan. 26, 1994
Shinobu Shioda, Yokohama, JP;
Masayuki Sahoda, Kawasaki, JP;
Kabushiki Kaisha Toshiba, , JP;
Abstract
A signal processing circuit includes two analog signal processors, an operational amplifier, a rectifier, and a reference potential generator. Each analog signal processor has four input terminals and two output terminals, and is designed to operate such that the first and second output terminals are set at the same potential and that a current difference between the first and second output terminals is proportional to a product of a potential difference between the first and second input terminal and a potential difference between the third and fourth input terminal. The first, second, third and fourth input terminals of the first analog signal processor are connected to receive an input signal, a first reference potential, a second reference potential, and a third reference potential, respectively. The output terminals of the first analog signal processor are connected to the negative and positive input terminals of the operational amplifier, respectively. The first, second, third and fourth input terminals of the second analog signal processor are connected to receive an output signal of the operational amplifier circuit, a fourth reference potential, the second reference potential, and a difference between the second reference potential and an output potential of a rectifier circuit, respectively. The output terminals of the second analog signal processor are connected to the negative and positive input terminals of the operational amplifier.