VIDEO DISPLAY

• Main Authors: GOSPEL THOMAS EDWARD, JOHNSON GENE HARLOW, MEARS MARK GILMORE, DUGGAN SCOTT JOSEPH
• Format: Patent
• Language: English
• Published: 11.09.2008
• Subjects: ACCESSORIES THEREFOR; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USINGWAVES OTHER THAN OPTICAL WAVES; APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FORPROJECTING OR VIEWING THEM; CINEMATOGRAPHY; DEVICES OR ARRANGEMENTS, THE OPTICAL OPERATION OF WHICH ISMODIFIED BY CHANGING THE OPTICAL PROPERTIES OF THE MEDIUM OF THEDEVICES OR ARRANGEMENTS FOR THE CONTROL OF THE INTENSITY,COLOUR, PHASE, POLARISATION OR DIRECTION OF LIGHT, e.g.SWITCHING, GATING, MODULATING OR DEMODULATING; ELECTRIC COMMUNICATION TECHNIQUE; ELECTRICITY; ELECTROGRAPHY; FREQUENCY-CHANGING; HOLOGRAPHY; NON-LINEAR OPTICS; OPTICAL ANALOGUE/DIGITAL CONVERTERS; OPTICAL LOGIC ELEMENTS; OPTICS; PHOTOGRAPHY; PHYSICS; PICTORIAL COMMUNICATION, e.g. TELEVISION; TECHNIQUES OR PROCEDURES FOR THE OPERATION THEREOF

PROBLEM TO BE SOLVED: To prevent restart-up delay when a user tries to turn on a receiver immediately after the user turns it off. SOLUTION: A liquid crystal display television receiver projection system uses a high-intensity discharge lamp as a back lighting source. The discharge lamp is of the type that should not be re-started or turned on immediately after being turned off. In response to a user power off command instantly, a display screen (screen) immediately gives a false appearance of being turned off, during a first interval (for example, 30 seconds) that immediately follows the power off command. Despite the appearance of being turned off, the discharge lamp is maintained powered on, during the first interval. If the user issues a power on command, before the first interval has elapsed, the user does not experience any start-up delay. If the user does not issue the power on command, during the first interval, the discharge lamp is de-energized. COPYRIGHT: (C)2008,JPO&INPIT