Method and apparatus for area dependent dynamic blue de-focusing

Details Method and apparatus for area dependent dynamic blue de-focusing Method and apparatus for area dependent dynamic blue de-focusing

1995-12-05

1998-01-27

Peng, John K.

Television

Video display

Projection device

346778, 346779, 346764, 315369, H04N 564, H04N 931, H04N 574

Patent

active

057126917

ABSTRACT:
A method and projection television system for projecting images having a plurality of color components, includes a device for filtering a first color component signal from a composite signal to provide a filtered first color component signal. A defocusing mechanism defocuses the first color component signal based on the filtered first color component signal. A gain adjustment device adjusts a gain of at least one other of a plurality of color component signals of the composite signal. An amount of defocusing performed by the defocusing mechanism and a gain adjustment by the gain adjustment device are dependent on a content of the composite signal. In another aspect of the invention, a spot wobble scheme may be employed alone in a static defocussing system, without dependence upon the video signal content.

REFERENCES:
patent: 3647945 (1972-03-01), Hannan
patent: 4369396 (1983-01-01), Judd
patent: 4668977 (1987-05-01), Ohno et al.
patent: 4733299 (1988-03-01), Glenn
patent: 4922330 (1990-05-01), Saito et al.
patent: 5153713 (1992-10-01), Kyuma et al.
patent: 5175615 (1992-12-01), Ohara
patent: 5223769 (1993-06-01), Priere et al.
patent: 5260797 (1993-11-01), Muraji et al.
patent: 5262848 (1993-11-01), Kim
patent: 5298985 (1994-03-01), Tsujihara et al.
patent: 5337092 (1994-08-01), Minoura
patent: 5434595 (1995-07-01), Macaulay

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