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:
Mar. 10, 2009
Filed:
Jan. 19, 2001
Lenny Lipton, Greenbrae, CA (US);
Jeffrey J. Halnon, Richmond, CA (US);
Jeff Wuopio, Petaluma, CA (US);
Bruce Dorworth, Vacaville, CA (US);
Lenny Lipton, Greenbrae, CA (US);
Jeffrey J. Halnon, Richmond, CA (US);
Jeff Wuopio, Petaluma, CA (US);
Bruce Dorworth, Vacaville, CA (US);
REAL D, Beverly Hills, CA (US);
Abstract
An alternating unipolar carrier waveform is used to drive a pi-cell modulator. The pi-cell is driven by the carrier, but the carrier never changes polarity within the time period that the cell is energized. However, each time the cell is energized, i.e., once per field, the polarity alternates. Further, a burst of pulses each separated by a short rest period is used on initial application of power to more quickly drive the pi-cell to its activated state.