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:
May. 12, 1992
Filed:
Oct. 22, 1990
Young W Song, Seoul, KR;
Goldstar Electron Co., Ltd., Chungcheongbuk, KR;
Abstract
A feed-back type emphasis circuit is disclosed which comprises an input amplifier, a low pass filter, an output amplifier and a feed-back amplifier. The input amplifier receives an input through its positive terminal, and the low pass filter receives the output of the input amplifier, and supplies its output to both the output amplifier and the feed-back amplifier. The output amplifier receives the output of the low pass filter and the input from the outside, while the feed-back amplifier receives both the output of the low pass filter and the input from the outside, with the polarities of its input terminals being shiftable correspondingly with the system specification of the set. The feedback amplifier includes a differential amplifier with adjustable gain and balance for two inputs, whereby the amount of emphasis can be adjusted and the circuit of the present invention can satisfy any specification, thus no new circuit is required when the specification is changed.