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. 31, 1982
Filed:
Sep. 12, 1980
Sony Corporation, Tokyo, JP;
Abstract
A signal converting circuit, which has particular application as a pedestal clamp circuit for a video signal, includes a differential amplifier having a pair of transistors which produce first and second differential currents at the respective collectors thereof; a first circuit supplied with the first differential current and including a diode and a first resistor having a first resistance value connected in series between the collector of one of the transistors of the differential amplifier and a reference potential; a second circuit supplied with the second differential current and including a second resistor having a second resistance value and a transistor having its collector emitter path connected in series with the second resistor between the collector of the other transistor of the differential amplifier and the reference potential; and an output circuit for producing an output current in response to the second differential current and including a current mirror transistor having its base-collector path connected in parallel with the collector-emitter path of the transistor of the second circuit, wherein the current gain of the signal converting circuit is controlled by the resistance values of the first and second resistors.