Boots – shoes – and leggings
Patent
1982-03-05
1984-11-06
Smith, Jerry
Boots, shoes, and leggings
340739, 340732, 364521, G06F 3153
Patent
active
044816057
ABSTRACT:
The vector generator comprises X and Y digital-to-analog converters providing X and Y deflection voltages to a cathode ray tube display. X and Y digital accumulators provide respective inputs to the X and Y digital-to-analog converters. The word lengths of the accumulators are wider than those of the digital-to-analog converters and the digital-to-analog converters derive their inputs from the most significant digits of the accumulators. X rate and Y rate signals proportional to the sine and cosine of the vector angle are applied as inputs to the respective accumulators which accumulate the rate signals with the present contents of the accumulators so as to generate linearly changing X and Y deflection signals. The vector angle is adjusted by changing the ratio of the sine to cosine inputs to the accumulators and the vector speed is controlled by increasing and decreasing the sine and cosine signals but maintaining the ratio therebetween the same. Preferably, the accumulator is implemented by an adder and latch combination providing the least significant portion of the accumulator with an up/down counter providing the most significant portion thereof.
REFERENCES:
patent: 3638214 (1972-01-01), Scott
patent: 3674999 (1972-07-01), Kelling
patent: 3691551 (1972-09-01), Kashio
patent: 3938130 (1976-02-01), Burnham
patent: 4023027 (1977-05-01), Strathman et al.
patent: 4027148 (1977-05-01), Rosenthal
patent: 4115863 (1978-09-01), Brown
patent: 4311997 (1982-01-01), Madni
patent: 4314351 (1982-02-01), Postel
Cooper Albert B.
Fleming Michael R.
Smith Jerry
Sperry Corporation
Terry Howard P.
LandOfFree
Display vector generator utilizing sine/cosine accumulation does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Display vector generator utilizing sine/cosine accumulation, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Display vector generator utilizing sine/cosine accumulation will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1045658