Coordinated position control system, coordinate position control method, and computer-readable storage medium containing a computer program for coordinate position controlling recorded thereon
US6411278B1 · kind B1 · utility
20Cited by
11References
8Claims
0Family size
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Key dates
| Filing date | Jul 2, 1999 |
| Grant date | Jun 25, 2002 |
| Priority date | — |
| Expiry date | Jul 2, 2019 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F3/0304
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
When an operator operates a pointing device, a direction computing section computes a movement vector from an image photographed by an image sensor, and when the movement vector is larger than a threshold, a direction correcting section determines the movement vector as invalid based on the recognition that the movement vector was caused by an abrupt change in the illumination or other conditions, and outputs only movement vectors that are smaller than the threshold to a coordinate position updating section.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.