Computer graphics processing and selective visual display system – Display peripheral interface input device
Reexamination Certificate
2006-05-02
2006-05-02
Lao, Lun-Yi (Department: 2677)
Computer graphics processing and selective visual display system
Display peripheral interface input device
C341S021000, C341S032000
Reexamination Certificate
active
07038658
ABSTRACT:
An input device includes a magnet to be worn by a user on one fingertip of either a right hand or a left hand, a first magnetic sensor to be worn by the user on a wrist of either the right hand or the left hand to detect a magnetic field generated by the magnet at a corresponding position, a second magnetic sensor to be worn by the user on the same wrist on which the first magnetic sensor is worn and at a position that is farther from the magnet than the first magnetic sensor and eliminates effects of geomagnetism, and an output unit to output a difference between an output signal from the first magnetic sensor and an output signal from the second magnetic sensor.
REFERENCES:
patent: 5481265 (1996-01-01), Russell
patent: 5489922 (1996-02-01), Zloof
patent: 5670987 (1997-09-01), Doi et al.
patent: 6380923 (2002-04-01), Fukumoto et al.
patent: 60-082987 (1985-05-01), None
patent: 06-028096 (1994-02-01), None
Shigeru Sawada et al., “Development Of Hand-Written Text Input Sensor Using Magnets For A Visually-Handicapped Person”, Mar. 28, 2002, pp. 1-4.
Kakutani Hiroshi
Kanno Sukeyasu
Maekawa Mitsuyoshi
Seki Hiroaki
Ishikawa Prefecture
Kanazawa University
Lao Lun-Yi
PFU Limited
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