Use of optical sensor in motion picture film projector...

Optics: motion pictures – Plural

Reexamination Certificate

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Details

C352S040000, C352S092000, C353S122000

Reexamination Certificate

active

11014799

ABSTRACT:
A system that determines a projector's true state in an automatic projection sequence. The system includes a projector in a primary display system, having a lamp for displaying visual information; and a sensor to determine the state of the lamp in the primary display system. Additionally, an interface to a secondary display system is included for sending an operational signal to the secondary display system, wherein the secondary display system operates subject to a predetermined state of the primary display system as determined by the state of the lamp in the primary display system.

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patent: 2808955 (2002-11-01), None
patent: 2001-075177 (2001-03-01), None

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