The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 07, 1994
Filed:
May. 26, 1992
Lyle A Reibling, Grand Rapids, MI (US);
Michael D Olinger, Kentwood, MI (US);
Smiths Industries Aerospace & Defense Systems, Inc., Grand Rapids, MI (US);
Abstract
A network structure for path generation includes an operational amplifier circuit (200) implementation. The circuit (200) implements a finite difference approximation template for computing the weighted sum of its four 'neighbors.' The circuit implementation (200) includes a series of five output operational amplifiers (202, 204, 206, 208 and 210). Each of the output amplifiers includes a feedback path (212) having a feedback resistance, and is connected to the output terminal of its respective operational amplifier and to the negative input terminal (214) of the corresponding amplifier. The positive input terminal (216) of each of the output operational amplifiers is connected to a ground (218). The circuit implementation (200) further includes a series of input operational amplifiers (220, 222, 224, 226 and 228). The output terminals (230) of each of the input operational amplifiers are connected to respective ones of the input terminals (214) of the output operational amplifiers through input impedances. The input amplifiers include conductive feedback paths (232) having feedback resistances and connected to negative input terminals (234) of each of the input operational amplifiers. A positive input terminal (236) of each of the operational amplifiers is connected to a ground (238). Each of the negative input terminals (234) of each of the input operational amplifiers is connected to a series of four input impedances. Each of the input amplifiers includes reference voltage inputs.