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A MOS cursive-character generator

Cheng, Edmund K. and Mead, Carver A. (1978) A MOS cursive-character generator. IEEE Journal of Solid-State Circuits, 13 (6). pp. 832-837. ISSN 0018-9200. doi:10.1109/JSSC.1978.1052057.

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Cursive characters can be made to be more readable, more attractive, and better suited to the operation of graphic CRT terminals than the usual dot-matrix type; a system using cursive-type characters achieves much higher writing rate while requiring much less bandwidth than that using dot-matrix-type characters. This paper presents an economical method of generating the x, y, and z analog signals for forming cursive characters with the deflection system of a CRT. A circuit design embodying a complete 48-stroke character generator on a single MOS integrated circuit is described. The IC accepts 7-bit ASCII code and outputs x, y, and z analog signals to generate any one of 32 standard ASCII characters in 5 μs. Additional groups of 32 characters can be added by merely paralleling additional chips. The entire 32 character digital and analog function has been implemented on a single self-contained 16-pin silicon-gate MOS chip 125 X 165 mil in size. Character encoding on the chip is accomplished in one mask at the diffusion step, and a straightforward mask-generation procedure has been developed.

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Alternate Title:A MOS cursive-character generator [for deflection system of CRT graphic display]
Additional Information:© 1978 IEEE. Manuscript received July 2, 1978. The authors wish to thank Intel Corporation for fabricating the prototype devices.
Issue or Number:6
Record Number:CaltechAUTHORS:20150114-104430588
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Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:53701
Deposited On:14 Jan 2015 20:42
Last Modified:10 Nov 2021 20:05

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