Image projection system and a method of controlling a projected pointer
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United States of America Patent
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Mar 24, 2015
Grant Date -
Oct 9, 2014
app pub date -
Apr 23, 2014
filing date -
Apr 7, 1995
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
An image projection system whereby a position of a pointer on a projected image can be easily controlled from a location separated from the main control means. The system comprises a projector, a computer for controlling the projector to display a pointer on a projected image in accordance with an operational signal from a terminal, and a remote controller for the projector. The remote controller comprises a pointing device and a transmitter for transmitting an operation signal as an infrared ray operational signal. The projector comprises a receiver which is an infrared (IR) optical receiver having directivity, and receives the infrared ray operational signal.
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