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:
Mar. 16, 2004
Filed:
Oct. 24, 2002
Chien-Hsin Lin, Cupertino, CA (US);
Mushtaq Sarwar, Santa Clara, CA (US);
Mike Lai, Fremont, CA (US);
Alexei Ouzilevaski, Cupertino, CA (US);
Apple Computer, Inc., Cupertino, CA (US);
Abstract
Methods and apparatuses for concatenating codewords of variable lengths using a vector processing unit. In one aspect of the invention, a method for execution by a microprocessor to pack bit streams of variable lengths including: receiving a first bit segment from a first vector register; receiving a second bit segment from a second vector register; determining whether or not the sum of the bit length of the first bit segment and the bit length of the second bit segment is larger than a required length; generating a third bit segment from the first and second bit segments; and outputting the third bit segment in a third vector register; where the above operations are performed in response to the microprocessor receiving a first single instruction. The third bit segment is generated from concatenating the first bit segment and a beginning portion of the second bit segment such that the bit length of the third bit segment is equal to the required length when the sum is larger than the required length; and the third bit segment is generated from concatenating the first and second bit segments when the sum is not larger than the required length.