Inclination angle detection device and inclination angle...

Details Inclination angle detection device and inclination angle... Inclination angle detection device and inclination angle...

2007-04-24

2007-04-24

Lauchman, Layla G. (Department: 2877)

Optics: measuring and testing

Angle measuring or angular axial alignment

C353S040000, C353S041000, C353S069000, C073S001750

Reexamination Certificate

active

10912843

ABSTRACT:
Each of a horizontal chart generating unit and a vertical chart generating unit generate eight charts #0to #7, the bright/dark sections being placed sequentially in equal distances. Each pattern of each charts #0to #7, is shifted little by little. Each chart #0to #7is sequentially projected on a screen, and each of the sensor controllers obtains an average phase difference, by obtaining the sensor data obtained by the result of measuring, from the distance-measuring sensors, and obtains the angle between an ideal screen that is vertical to a center line of distance-measuring sensors and the screen, by obtaining the distance to the two distance-measuring points on the screen, based on the obtained average phase difference. A projector control unit replaces the angles that each of the sensor controllers obtains, to inclination angles θH and θV of the screen, and supplies the angles to a trapezoidal correction unit.

REFERENCES:
patent: 4529964 (1985-07-01), Minami et al.
patent: 4704020 (1987-11-01), Murakami et al.
patent: 5760896 (1998-06-01), Suzuki
patent: 6520647 (2003-02-01), Raskar
patent: 6677565 (2004-01-01), Wahl et al.
patent: 6862086 (2005-03-01), Kanemitsu
patent: 2003/0030757 (2003-02-01), Shim
patent: 2000-241874 (2000-09-01), None
patent: 2003-57531 (2003-02-01), None
patent: 2003-204495 (2003-07-01), None

Affiliated with

Also associated with

Rating

Inclination angle detection device and inclination angle... does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Inclination angle detection device and inclination angle..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Inclination angle detection device and inclination angle... will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3747597