Video display adjustment and on-screen menu system

Details Video display adjustment and on-screen menu system Video display adjustment and on-screen menu system

1991-11-22

1993-12-14

Kostak, Victor R.

Facsimile and static presentation processing

Facsimile

Specific signal processing circuitry

358903, 4552001, 4551981, 4552331, 345156, 34082576, H04N 544

Patent

active

052708217

ABSTRACT:
An EEPROM stores multiple sets of video display parameters for a multi-frequency video display. A microcontroller receives input from a user, changes the stored display parameters and outputs changes in the parameters to the video display. The microcontroller also controls video display apparatus that displays on-screen menus and value indicator graphs for facilitating user input. The video display apparatus incorporates a video clock synchronized to the horizontal synchronization signal of the multi-frequency display, to keep the displayed menus synchronized regardless of the current frequency. In addition, the video display apparatus elongates displayed characters at higher frequencies to control the absolute size of displayed characters across frequencies. The present invention provides for changes to video display parameters, and for resetting the display parameters to factory standards, without manipulating electromechanical devices such as potentiometers.

REFERENCES:
patent: 4024531 (1977-05-01), Ashby
patent: 4405836 (1983-09-01), Meyerhoff
patent: 4495652 (1985-01-01), Leslie
patent: 4710800 (1987-12-01), Fearing et al.
patent: 4755955 (1988-07-01), Kimura et al.
patent: 4837627 (1989-06-01), Mengel
patent: 5005084 (1991-04-01), Skinner
patent: 5051827 (1991-09-01), Fairhurst

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