Communications: electrical – Land vehicle alarms or indicators – Internal alarm or indicator responsive to a condition of the...
Patent
1986-05-02
1990-05-29
Groody, James J.
Communications: electrical
Land vehicle alarms or indicators
Internal alarm or indicator responsive to a condition of the...
178 18, 340706, G09G 302
Patent
active
049299352
ABSTRACT:
Apparatus for aligning a raster scanned display uses a microprocessor to control timing for horizontal and vertical synchronizing signals. An additional delay device may be provided to improve alignment resolution. When the aligning apparatus is used with a touch panel, an alignment screen is displayed, including aligning touchkeys. By depressing the touch panel at the displayed touchkeys, a user provides image position information to the microprocessor. The microprocessor corrects image alignment to the touch panel by varying timing interval counts stored in registers of a video controller for front and back porch intervals of horizontal and vertical signals. Where resolution is to be improved, delay parameter settings are provided to the additional delay device. Alternatively, the counts in the registers may be fixed and alignment may be controlled completely by the delay.
REFERENCES:
patent: 4035841 (1977-07-01), Micek
patent: 4523188 (1911-06-01), Huber
patent: 4710758 (1987-12-01), Mussler et al.
Wolverton, Van, "Running MS DOS", 2nd Edition Microsoft Press, 1985, pp. 250-251.
Kane, Gerry, "CRT Controller Handbook", Osborne/McGraw-Hill, 1980, pp. 4-1 to 4-41.
"MC6845 CRTC", data sheet by Motorola, pp. 4-457 to 4-479.
Fuller Maurice J.
Rysavy Peter B.
Becker Stephen A.
Gopstein Israel
Groody James J.
Harvey David E.
Ishimaru Mikio
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