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. 17, 2002
Filed:
Nov. 22, 1999
John Eric Kleider, Scottsdale, AZ (US);
Jeffery Scott Chuprun, Scottsdale, AZ (US);
Richard James Pattison, Fountain Hills, AZ (US);
Chad Bergstrom, Chandler, AZ (US);
Byron Tarver, Chandler, AZ (US);
Motorola, Inc., Schaumburg, IL (US);
Abstract
A communications system ( ) includes a multi-rate source coder (MRSC) ( ), a variable size/rate buffer (VSRB) ( ), a speech buffer ( ), and a buffer control block ( ). The variable size/rate buffer ( ) includes a source coder bit buffer (SCBB) ( ) and an adaptive transmit frame buffer ( ). The source coder bit buffer ( ) receives speech frames coded at different rates from the multi-rate source coder ( ), and deposits an integer or non-integer number of frames in the adaptive transmit frame buffer (ATFB) ( ). A receiver includes a seamless rate transition module (SRTM) ( ) and an variable buffer ( ). The seamless rate transition module ( ) correlates speech data previously coded at different rates, and it then truncates or alternatively appends, concatenates, and warps the speech data to remove any annoying artifacts at the rate change boundary.