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. 19, 2005
Filed:
Sep. 10, 2001
Applicants:
Zaheer Ahmed, Islamabad, PK;
Shoab A. Khan, Rawalpindi, PK;
Inventors:
Zaheer Ahmed, Islamabad, PK;
Shoab A. Khan, Rawalpindi, PK;
Assignee:
Quartics, Inc., Irvine, CA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G06F015/167 ;
U.S. Cl.
CPC ...
Abstract
The invention is related to methods and apparatus that decode convolutionally encoded data, including trellis-coded modulation (TCM) systems. One embodiment of the invention shares a memory device with a main processor, such as a microprocessor or a DSP, and advantageously relieves the main processor of the relatively time-consuming task of decoding the convolutionally encoded data. This frees up the main processor to execute other tasks. One embodiment of the invention includes a micro-coded state machine that can be programmed to control the decoding of the convolutional codes.