Position pointing device, program, and pointed position detecting method
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United States of America Patent
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Jan 13, 2004
Grant Date -
Oct 24, 2002
app pub date -
Nov 2, 2001
filing date -
Feb 16, 2000
priority date (Note) -
Expired
status (Latency Note)
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Abstract
An objective is to provide a position pointing device, a program and a method for detecting the position pointing device which relates to a device pointing a position on a display screen and which can discriminate a scan mode of a display device and obtain information of pointed position by performing a processing corresponding to the discriminated scan mode. A photosensor (18) provided in the position pointing device detects a scanning beam from a display device (140) and generates a light detection signal. A scan mode discriminating section (30) judges that a scan mode in the display device is not a standard scan mode type, but a multi-density scan type if a frequency component of the light detection signal includes a frequency component of a horizontal synchronous signal in a multi-density scan type display device.
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