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. 15, 1986
Filed:
Oct. 18, 1984
Applicant:
Inventor:
Ian A Vance, Newport, GB;
Assignee:
STC plc, London, GB;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H03D / ; H03D / ; H03D / ; H04B / ;
U.S. Cl.
CPC ...
375 94 ; 329107 ; 375 39 ; 375 77 ; 375 80 ; 455324 ;
Abstract
A direct conversion receiver in which the quadrature I and Q signals are converted into pulse density modulated digital data streams by delta-sigma modulators 14, 15. The resultant digital data streams are then processed in a logic block 18 according to predetermined logic truth tables. The digital output of the processor 18 is then converted back to an analogue signal.