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:
Sep. 01, 1981
Filed:
Dec. 22, 1978
Gerald P Richards, Framingham, MA (US);
Raytheon Company, Lexington, MA (US);
Abstract
A system for the generation of a set of voltages, such as the X and Y coordinate voltages of a display or automated milling machine, includes a character generator and a character positioning circuit which, in turn, are responsive to digital control signals as are produced by a computer. A detector compares detection signals to reference signals at successive instants during the use of the system. The computer utilizes a learning routine in conjunction with voltage generation circuitry to develop the reference signals. The computer is programmed to provide specific values of the digital control signals at the times of the comparisons by the detector to detect any deviation of the magnitudes of the voltages of the deflection circuitry from the magnitudes attained during an initial alignment of the system.