Projection apparatus and method for activating a projection...

Details Projection apparatus and method for activating a projection... Projection apparatus and method for activating a projection...

2008-04-18

2010-12-14

Le, Que T (Department: 2878)

Radiant energy

Photocells; circuits and apparatus

Photocell controlled circuit

C250S205000

Reexamination Certificate

active

07851739

ABSTRACT:
A projection apparatus includes an illuminating unit, an imaging unit, a lens unit, and a control unit. The illuminating unit includes a light source, and a light source driving module operable to drive the light source to provide an illumination beam. The imaging unit is operable so as to modulate the illumination beam into an image beam. The lens unit is disposed on an optical path of the image beam for projecting the image beam. The control unit is coupled electrically to the illuminating unit and the imaging unit. The control unit is configured to execute an activating thread for initializing the imaging unit after controlling initial driving of the light source by the light source driving module, and a monitoring thread for monitoring the light source driving module for a success signal that indicates successful provision of the illumination beam by the light source.

REFERENCES:
patent: 7046143 (2006-05-01), Al-Khateeb

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