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:
Jul. 03, 2012
Filed:
Dec. 07, 2007
Jonathan Kron, Beechhurst, NY (US);
Bruce Roberts, Mentor on the Lake, OH (US);
Laszlo S. Ilyes, Richmond Heights, OH (US);
Jonathan Kron, Beechhurst, NY (US);
Bruce Roberts, Mentor on the Lake, OH (US);
Laszlo S. Ilyes, Richmond Heights, OH (US);
General Electric Company, Schenectady, NY (US);
Abstract
In a scanning backlight for an LCD display, several backlights () provide a precisely positioned dimming pulse corresponding to a transition point of the LCD screen. The dimming pulse must be variable with video synchronization frequency and dimming duty cycle, which is a performance intensive calculation. One microcontroller performing this operation is limited in scope. By using several ballast controllers (), the solution is scalable, in that it is flexible if the number of backlights () changes. Additionally, by using several controllers (), added functions can be performed by the ballast controllers ().