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:
Sep. 20, 2005
Filed:
Dec. 21, 2000
Mark Francis Rumreich, Indianapolis, IN (US);
Ronald Thomas Keen, Indianapolis, IN (US);
Mark Francis Rumreich, Indianapolis, IN (US);
Ronald Thomas Keen, Indianapolis, IN (US);
Thomson Licensing, Boulogne-Billancourt, FR;
Abstract
An ACC system includes a controllable amplifier having an input coupled to receive a chroma input signal and an output for providing an chroma output signal of controllable amplitude. A first feedback path, including a cascade connection of means for providing a signal representative of a measured burst amplitude, means for providing an error signal representative of the difference between a desired burst amplitude and the measured burst amplitude, and an integrator, is coupled between the output of the controllable amplifier and a gain control input of the controllable amplifier. A second feedback path, coupled from an output of the integrator to an input thereof, reduces the gain of the amplifier means in a controlled manner for values of a burst component of the chroma input signal below a predetermined threshold value provided by a control signal source, the reduction being at a predetermined rate controlled by a scaling signal device, thereby providing an output system response characteristic having a precisely controllable knee and slope below a predetermined amplitude of a burst component of the chroma input signal.