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. 21, 2011
Filed:
Oct. 30, 2009
Jy-der David Tai, Sanchong, TW;
Jy-Der David Tai, Sanchong, TW;
Tai-1 Microelectronics Corp., Taipei County, TW;
Abstract
A gain control circuit and its gain control method, said gain control method comprising the following steps: firstly, outputting continuously a counter value; next, generating a ramp wave signal based on said counter value, and at a voltage where a control voltage signal intersects said ramp wave signal, obtaining an initial counter value based on said ramp wave signal, thus determining an initial voltage gain of an amplifier circuit; then, when a high or low voltage of an output signal of said amplifier circuit is greater or less than a predetermined detection voltage upper or lower limit, adjusting a DC voltage level of said ramp wave signal with a detection signal; and finally, obtaining at said voltage a counter value less than said initial counter value based on said ramp wave signal, hereby reducing said initial voltage gain based on said counter value.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile