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. 08, 1980
Filed:
Jul. 18, 1978
Kazuhide Aoki, Kawasaki, JP;
Yasuo Nakada, Yokohama, JP;
Tokyo Shibaura Denki Kabushiki Kaisha, Kawasaki, JP;
Abstract
A voltage comparator suitable for use in an analog-to-digital converter such as a successive-approximation converter which is comprised of a plurality of capacitively cascade-connected inverters to generate an output signal of a logic level 1 or 0 according to the relationship between the magnitudes of two analog input voltage signals to be compared. A bias circuit for impressing a bias voltage on the inputs of the inverters comprises first and second MOS transistor resistor elements connected in series across a power source and a third MOS transistor which is connected in parallel to the second MOS transistor, and whose gate is supplied with a control voltage so that the inverters are respectively biased to the optimum operation point for comparison through adjustment of the control voltage. With another embodiment of this invention, the respective inverters are automatically biased to the optimum operation point for comparison by detection of the bias voltage of inverters.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile