04026555 is referenced by 285 patents and cites 9 patents.

Keyboard-controlled apparatus for producing video signals for standard television receivers includes a random access memory having a multiplicity of storage positions each of which corresponds to a preselected discrete portion of the TV raster. Data stored in the random access memory is sequentially read from memory in synchronism with the scanning of the television receiver so that a desired video signal is generated at each discrete position of the cathode ray beam. Data is read into the random access memory at preselected storage positions depending upon a particular image to be displayed. The data writing process is under the control of a micro-processor which is programmed to cause the stored image data to be varied in accordance with the condition of the user-controlled keyboard.

Title
Television display control apparatus
Application Number
5/557484
Publication Number
4026555
Application Date
March 12, 1975
Publication Date
May 31, 1977
Inventor
Lawrence Martin Haskel
Danbury
CT, US
Wallace Kirschner
Trumbull
CT, US
Agent
Darby & Darby
Assignee
Alpex Computer Corporation
CT, US
IPC
G06K 15/20
G06F 3/14
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