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:
Apr. 16, 1991
Filed:
Apr. 27, 1989
Applicant:
Inventor:
James L Adcock, Seattle, WA (US);
Assignee:
Hewlett-Packard Company, Palo Alto, CA (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G01V / ;
U.S. Cl.
CPC ...
364576 ; 367 74 ;
Abstract
A chirp signal is provided that is characterized by a flat response in the frequency domain. To achieve this response, the signal is made non-flat in the time domain. That is, its amplitude is varied as its frequency is swept. The particular perturbations introduced into the chirp's waveform are typically selected to minimize the waveform's crest factor.