Photography – Eye tracking
Patent
1994-05-31
1997-01-28
Metjahic, Safet
Photography
Eye tracking
396373, G03B 1302
Patent
active
055982433
ABSTRACT:
In a camera having a viewfinder that is detachable from the camera body, and a visual line detection device, calibration data specific for different photographers is stored in a memory located in the detachable viewfinder. This eliminates the need to re-input the calibration data every time the viewfinder is changed. Additionally, when a classification code is stored in a memory in each camera body, the classification code being specific for each camera body, the calibration data is stored in correspondence with the classification codes in the viewfinder memory. Then, the appropriate calibration data is accessed by reading the classification code from the camera body memory then the viewfinder is attached to a camera body, and then accessing the calibration data that is stored in correspondence with that read classification code in the viewfinder memory.
REFERENCES:
patent: 4574314 (1986-03-01), Weinblatt
patent: 4836670 (1989-06-01), Hutchinson
patent: 4950069 (1990-08-01), Hutchinson
patent: 5036347 (1991-07-01), Tsunekawa et al.
patent: 5225862 (1993-07-01), Nagano et al.
patent: 5333029 (1994-07-01), Uchiyama et al.
Metjahic Safet
Nikon Corporation
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