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:
Jun. 22, 2004
Filed:
Dec. 20, 1999
Martin J. Williams, San Diego, CA (US);
James J. Willkie, Poway, CA (US);
Mazen Chmaytelli, San Diego, CA (US);
Bilhan Kirbas, La Jolla, CA (US);
Samir K. Khazaka, San Diego, CA (US);
QUALCOMM Incorporated, San Diego, CA (US);
Abstract
A wireless communication device ( ) includes a display ( ) having a backlight ( ). A backlight controller ( ) selectively enables the backlight ( ) to minimize power consumption and conserve energy in a battery ( ). In one embodiment, a receiver ( ) receives a time-of-day message from a remote location to set a timer ( ) with the current time-of-day. The current time-of-day is compared with a predetermined time-of-day and the backlight controller ( ) enables and disables the backlight ( ) at predetermined times-of-day. The wireless communication device ( ) may also include a GPS receiver ( ), to determine the location of the device. The backlight controller ( ) can determine the sunrise or sunset times for the specific location. The GPS data may be used in combination with the time-of-day message. A photosensor ( ) can detect ambient light levels and generate an electrical signal corresponding thereto. The backlight controller ( ) may use the photosensor ( ) to determine ambient light levels and to enable or disable the backlight ( ) based only on ambient light levels. The photosensor signal can be used in combination with the time-of-day message and/or the location data from the GPS receiver ( ) to control the backlight ( ).