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:
Feb. 26, 1991
Filed:
Oct. 12, 1988
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 Machines Corporation, King of Prussia, PA (US);
Abstract
In a digital wireless subscriber telephone unit for wireless connection with a base station which includes a modem processor whose signal is converted to an analog signal which is then upconverted and filtered to form an IF signal, a deglitching circuit for removing glitch spikes occurring during the transition periods from digital signals to analog signals comprising a timing system, a detector for detecting the transistion periods in order to control the timing system, and a mixer coupled to the output of a D/A converter to mix a blanking signal from the timing system with the analog signal received from the D/A converter during the transistion periods, whereby the output of the mixer is returned to an intermediate reference level.