Digital stroke generator

Details Digital stroke generator Digital stroke generator

1985-12-10

1988-05-03

Caldwell, Sr., John W.

Communications: electrical

Land vehicle alarms or indicators

Internal alarm or indicator responsive to a condition of the...

340728, 340740, 340741, 340750, G09G 100

Patent

active

047423439

ABSTRACT:
A digital stroke generator reads and writes discrete stroke segments in a display memory. The generator comprises principally a line address register, a column address register, a command addresser, a counter and it may also include a data register. The command addresser which commands the incrementation and decrementation of the address registers comprises an octant register, a direction register in which the vector direction is memorized according to the ROTHMAN code and a transcoding matrix. The counter counts down the image points making up the vector to be drawn and blocks the processor when the count down is finished.

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patent: 3938130 (1976-02-01), Burnham et al.
patent: 4338673 (1982-07-01), Brown
patent: 4384286 (1983-05-01), DiToro
patent: 4507656 (1986-03-01), Morey et al.
patent: 4529978 (1985-07-01), Rupp
patent: 4633243 (1986-12-01), Bresenham et al.
J. Simmons, "Dynamic Vector Scaling Routine for Graphics Display", IBM Technical Disclosure Bulletin, 1978, vol. 21, No. 5, pp. 2050-2051.

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