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:
Jul. 15, 1997
Filed:
May. 21, 1993
Applicant:
Inventor:
Paul A Gresham, Arnprior, CA;
Assignee:
Mitel Corporation, Kanata, CA;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G06F / ; H04Q / ;
U.S. Cl.
CPC ...
395427 ; 364D / ; 364D / ; 364238 ; 36518902 ; 395494 ; 395405 ; 370378 ;
Abstract
A digital signal processor (DSP) interface comprised of a memory containing a pair of memory banks, apparatus for storing an input signal in a first one of the memory banks, apparatus for storing a signal from the DSP in a second one of the memory banks, apparatus for switching the content of the two memory banks, apparatus for reading either or both of the two memory banks to a first and a second memory output respectively, whereby the input signal modified or replaced by the signal from the DSP is output from the memory.