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:
Jan. 02, 2007
Filed:
Mar. 13, 2006
Howell Schwartz, Austin, TX (US);
Samuel Nicklaus D'alessio, Round Rock, TX (US);
Subramanian Jayaram, Austin, TX (US);
Harold Guy Melton, Round Rock, TX (US);
Stanley Osgood, Georgetown, TX (US);
Howell Schwartz, Austin, TX (US);
Samuel Nicklaus D'Alessio, Round Rock, TX (US);
Subramanian Jayaram, Austin, TX (US);
Harold Guy Melton, Round Rock, TX (US);
Stanley Osgood, Georgetown, TX (US);
Dell Products L.P., Round Rock, TX (US);
Abstract
Projector bulb life is managed to achieve desired performance parameters, such as a maximum life mode or maximum brightness mode, by sensing bulb luminance and applied the sensed luminance with a luminance feedback controller to drive the bulb to achieve the desired performance parameter. For instance, in maximum life mode the luminance feedback controller reduces power applied to the bulb to restrict bulb luminance to a maximum luminance setpoint when greater luminance is available with a newer bulb. In maximum brightness mode, the luminance feedback controller increases power applied to the bulb to increase bulb luminance if the sensor senses luminance below a threshold due bulb wear. Bulb life management improves project image illumination to display information in a variety of projector types, including digital mirror devices and liquid crystal displays.