Projection equipment and a method of driving a light source...

Details Projection equipment and a method of driving a light source... Projection equipment and a method of driving a light source...

2005-07-07

2008-11-11

Koval, Melissa Jan (Department: 2862)

Optics: image projectors

Lamp control

C353S030000, C353S052000, C353S121000, C348S748000

Reexamination Certificate

active

07448759

ABSTRACT:
A projection equipment is provided with a projection system, a memory unit for storing discrimination information which is used to judge whether or not a cooling operation of a light source lamp of the projection system has been finished in a normal manner at the time of a previous power-off operation, a key input unit for giving an instruction to execute a power-on operation, and a control unit adapted to use a timer unit for delaying a turn-on operation of the light source lamp by a predetermined time depending on the discrimination information stored in the memory unit at the time when the instruction to execute the power-on operation is given.

REFERENCES:
patent: RE36060 (1999-01-01), Miyashita
patent: 7108375 (2006-09-01), Eguchi
patent: 56-097999 (1981-08-01), None
patent: 9-069394 (1997-03-01), None
patent: 10-312888 (1998-11-01), None
patent: 2003-005287 (2003-01-01), None
Japanese Office Action dated Jun. 3, 2008 and English translation thereof issued in counterpart Japanese Appln. No. 2004-208959.

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