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:
Jan. 13, 1981
Filed:
Feb. 07, 1962
Robert J Grady, Garden Grove, CA (US);
Harry G Posthumus, Los Angeles, CA (US);
Magnavox Government and Industrial Electronics Co., Fort Wayne, IN (US);
Abstract
1. In combination: a signal source for producing a signal having characteristic variations representative of intelligence, a first code source for producing a first code signal having apparently random characteristic variations but actually having characteristic variations conforming to a first particular code sequence which repeats after a relatively short time interval, a second code source for producing a second code signal likewise having apparently random characteristic variations but actually having characteristic variations conforming to a second particular code sequence which may repeat after a relatively long time interval, modifying circuit means responsive to the intelligence signal from the signal source and to a coded signal for modifying the characteristics of the coded signal in accordance with the characteristics of the intelligence signal, and means responsive to the signals from the first code source and to the signals from the second code source for initially introducing the first code signal to the modifying means for modification of such signal in accordance with the characteristics of the intelligence signal and of the first code signal and for subsequently introducing the second code signal to the modifying means for modification of the second code signal in accordance with the characteristics of the intelligence signal.