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:
Aug. 08, 1978
Filed:
Feb. 02, 1976
John N Pierce, Lexington, MA (US);
Steen A Parl, Cambridge, MA (US);
Signatron, Inc., Lexington, MA (US);
Abstract
An apparatus for simulating the characteristics of a signal channel which uses two or more cascaded delay lines each of which in one embodiment has a single input and a plurality of tapped outputs. The tapped output signals from each delay line are each multiplied by randomly characterized signals and the multiplied signals are combined to supply an input signal to the next succeeding delay line. The input signal to the first of the cascaded delay lines is the channel input signal and the output of the last of the cascaded delay lines is the simulated channel output signal. The randomly characterized signals associated with all but one of the delay lines may be signals having random polarities or having random phases while the randomly characterized signals associated with the remaining one of the delay lines has Gaussian characteristics. Appropriate control of the amplitude of the Gaussian characterized signals permits an approximation to be made of the energy distribution of the signal channel which is being simulated.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile