Facsimile and static presentation processing – Facsimile – Specific signal processing circuitry
Patent
1985-02-08
1987-06-02
Britton, Howard W.
Facsimile and static presentation processing
Facsimile
Specific signal processing circuitry
328187, 328188, 358150, 358151, H04N 506
Patent
active
046707824
ABSTRACT:
A television video pattern generator system comprises a keyboard for entering pulse width and timing parameters for a video scanning rate. The individual incremental pulse width and timing parameters for the horizontal and vertical synchronizing waveforms are entered into a keyboard. A pattern selector selects a particular pattern which the operator wants to display on the video screen. The entered values are stored in a memory and a central processing unit processes the entered parameters and causes horizontal and vertical generators to generate the horizontal and vertical scan signals. A sync generator receives inputs from the horizontal and vertical generators and generates the scan rate. A pattern generator receives inputs from the sync generator and a pattern selector and generates a video display pattern in accordance with the selected pattern parameters and the selected scan rate parameters. If it is desired to compute a scan rate rather than to build a custom scan rate the central processing unit will automatically calculate a scan rate based upon enter parameters so that the individual pulse width of the scan rate pulses are expressed as a percentage of total horizontal line time.
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"Vii Raster Master Keyboard Entry Programmable Sync Generator", Visual Information Institute, Xenia, Ohio, copyright 1984.
Wells-Gardner Electronics Corporation Brochure, "Series 80 Signal Generator".
Quantum Data, Inc., "Quantum Data Model 801 Programmable Character Generator Owner's Manual".
Visual Information Institute, Inc., "High-Technology Television" (1982).
Harshbarger John H.
Shores William M.
Britton Howard W.
Visual Information Institute, Inc.
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