Multi-mode video standard selection circuit and selection method

Details Multi-mode video standard selection circuit and selection method Multi-mode video standard selection circuit and selection method

1991-12-20

1992-10-20

Britton, Howard W.

Facsimile and static presentation processing

Facsimile

Specific signal processing circuitry

358140, H04N 546

Patent

active

051574950

ABSTRACT:
A first embodiment of the present invention provides logic to select between one of three or more user entered video standards and one or more selectable default video standards. The logic overrides the default standard with the user selected standard. A second embodiment includes a state machine that sets a mode output to a default standard from among two or more standards specified at the factory using jumper pins. The state machine can step through the two or more available standard modes, thereby changing the picture displayed to the user and, as desired, allowing the user to indicate what standard should be used.

REFERENCES:
patent: 4860098 (1989-08-01), Murphy
patent: 4962427 (1990-10-01), Lunn
patent: 4962428 (1990-10-01), Tong
patent: 4994912 (1991-02-01), Lumelsky
patent: 5095363 (1992-03-01), Zuffada

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