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:
Dec. 28, 2010
Filed:
Dec. 08, 2006
Ying-cheng Lee, Taipei, TW;
Jeff Lin, Taipei, TW;
Ying-Cheng Lee, Taipei, TW;
Jeff Lin, Taipei, TW;
Via Technologies, Inc., Hsin-Tien, Taipei, TW;
Abstract
An add-compare-select (ACS) unit generates first path metrics having a first bit-pair and a most significant bit-pair (MSB) each including a high bit and a low bit. A first ACS circuit produces the first bit-pair and a first carry. A limiting circuit generates the MSB based on the first carry, and limits the MSB to a first predetermined value. A MSB maximum select (MS) unit receives an MSB of second path metrics from another ACS unit, and compares the MSBs of the first and the second path metrics to determine MSB decision signals based on maximum likelihood selection. A MSB storage unit stores the MSB of the first path metrics. A reset unit resets the high bit of the MSB of the first path metrics to a second predetermined value when the high bits of the MSBs of the first and the second path metrics reach the first predetermined value.