Line of sight detection device and an apparatus having a line of sight detection device
US5926655A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jul 21, 1997 |
| Grant date | Jul 20, 1999 |
| Priority date | — |
| Expiry date | Jul 21, 2017 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03B2213/025
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A line of sight detection device detects a user's line of sight by illuminating an eyeball of a user, receiving light from the eyeball of the user, detecting a wink of the user, detecting a line of sight of the user based on a light receiving state of a light receiving means, changing at least one of an illuminating condition of an illuminating means and a light receiving condition of the light receiving means, and repeating a line of sight detecting operation based on the light receiving state of the light receiving means during the line of sight detecting operation, the line of sight detecting operation being repeated without changing the illuminating condition of the illuminating means and the light receiving condition of the light receiving means when a wink detection means detects a wink of the user during the line of sight detecting operation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.