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:
Jun. 11, 2002
Filed:
Dec. 30, 1999
Hoang Minh Pinai, San Jose, CA (US);
Engineering Consortium, Inc., Santa Clara, CA (US);
Abstract
An audio compressor utilizes a switched charging state rectifier which produces an output proportional to the magnitude of an input signal but with controlled attack/release times. The rectified voltage is input to a logical selector, which provides logical control signals which are a function of the rectified voltage. In a preferred embodiment, the control signals of the logical selector are used to select the switch positions of a switched resistor ladder. The switched resistor ladder is used to provide a resistance path in an op-amp feedback amplifier, thereby enabling the gain of the op-amp amplifier to be adjusted in steps by the selector as the rectified signal level varies.