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:
Nov. 19, 1991
Filed:
Oct. 10, 1989
David N Critchlow, San Diego, CA (US);
Graham M Avis, San Diego, CA (US);
Sandra J Earlam, San Diego, CA (US);
Karle J Johnson, Carlsbad, CA (US);
Bruce A Smetana, Escondido, CA (US);
Gregory L Westling, Poway, CA (US);
Eric Paneth, Givataiim, IL;
Moshe Yehushua, San Diego, CA (US);
International Mobile Machine Corporation, King of Prussia, PA (US);
Abstract
An interpolator varies the sampling rate of a signal. The signal may comprise pairs of in-phase and quadrature components at a first rate which are serially input through a pair of memories connected in series. The serially connected memories operate at a second higher rate which is a multiple of the first rate. An output taps the signals being circulated by the serially connected memories which results in the output of a signal having the in-phase and quadrature components at the higher second rate.