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. 24, 2005
Filed:
Aug. 17, 2001
Applicant:
James Joseph Anthony Mccormack, Eindhoven, NL;
Inventor:
James Joseph Anthony McCormack, Eindhoven, NL;
Assignee:
Koninklijke Philips Electronics N.V., Eindhoven, NL;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G09G003/20 ; G09G003/28 ;
U.S. Cl.
CPC ...
Abstract
In the matrix display drive circuit with an energy recovery inductor (L), a switch circuit (S, D, S, d) is connected in parallel with the inductor (L) to keep the inductor current (TL) in a loop which is as small as possible, and to keep the voltage (VL) across the inductor (L) as low as possible. Consequently, the energy stored in the inductor is lower, and the EMcaused by the parasitic resonance of the inductor (L) with parasitic capacitances Cj will be significantly lower.