Projection type image display device

Details Projection type image display device Projection type image display device

2006-04-28

2011-10-25

Awad, Amr (Department: 2629)

Computer graphics processing and selective visual display system

Plural physical display element control system

C713S182000, C353S069000, C710S200000

Reexamination Certificate

active

08044880

ABSTRACT:
A theft preventing system easy to operate and capable of implementing countermeasures to theft of a projection type image display device is provided. The projection type image display device is equipped with a unit for detecting a used condition of the device and a unit for registering a used condition of the device. By further equipping the device with a unit for inhibiting normal operations of the device in its used condition other than the registered condition, a simple and easy-to-operate unauthorized use preventing system can be realized and thus protection of the device against theft can be attained.

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patent: 2005-301177 (2005-10-01), None
JP-09-284691 Machine Translation to English.

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