Coloring device with rotary filter and detection sensor mounted

Details Coloring device with rotary filter and detection sensor mounted Coloring device with rotary filter and detection sensor mounted

1997-01-15

1999-05-18

Brier, Jeffery

Computer graphics processing and selective visual display system

Data responsive crt display control

Color display

348196, 348270, 348271, 348743, G09G1/28

Patent

active

059054794

ABSTRACT:
A coloring device for use, for example, in a color image display device, includes a rotary filter rotated by a motor and includes color filter sections of the three colors which pass over the screen of a monochromatic display device in a predetermined sequence as the rotary filter rotates. The coloring device may include two or more sets of color filter sections to enable reduction of the speed of rotation. For size reduction, a member to be detected, used for detection of the rotation of the rotary filter, may be provided on the rotor of the drive motor, or the filter assembly having the rotary filter may be directly mounted to the rotor of the motor. The rotary filter may be in the form of a disk or a cone. In the latter case, it is advantageous that the color filter sections are formed of a transparent base provided with filter sheets attached thereto or coatings having a transparency only to light of the respective color.

REFERENCES:
patent: 2769027 (1956-01-01), Adams
patent: 3821793 (1974-06-01), Carson
patent: 4197559 (1980-04-01), Gramling
patent: 4429263 (1984-01-01), Muller
patent: 4547714 (1985-10-01), Muller
patent: 4685000 (1987-08-01), Barrett
patent: 4831437 (1989-05-01), Nishioka et al.
patent: 5010415 (1991-04-01), Suzaki
patent: 5034642 (1991-07-01), Hoemann et al.
patent: 5046162 (1991-09-01), Ishikawa et al.
patent: 5371543 (1994-12-01), Anderson

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