Title: Second difference function generator

Abstract: High accuracy function calculating apparatus using a minimum of components and storage locations. Second difference values of the function to be generated are stored in a read-only memory which is addressed by an incrementable and reversible address counter. A first accumulator circuit connected to the output of the read-only memory calculates the first difference values of the function. A second accumulator coupled to the output of the first accumulator calculates the values of the desired function. The apparatus is used to advantage in radar azimuth converter applications as well as in general purpose function calculating applications.

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Inventors: Richards, Gerald P. (Framingham, MA, US)

Application Number: 551575
Filing Date: 1975-02-20
Publication_date: 1976-08-17
Assignee: Raytheon Company (Lexington, MA)
Primary Class(es): 342/158 342/195, 708/276
Other Classes:
US Patent Ref:

3500402	Mar, 1970	Huele et al.	343/16.
3683380	Aug, 1972	Cantwel, Jr. et al.	343/16.

Other Refs:
Primary Examiner: Hubler, Malcolm F.
Assistant Examiner:
Attorney: Inge; John R., Pannone; Joseph D., Bartlett; Milton D.