Altera Corporation

Cirrus Logic Inc.

Pts Corporation

Navin Jaffer

Matthew Plonski

Ali Soheil Sadri

Anissim A Silivra

Bin Huang

Wesley Hamilton Smith

Shahin Hedayat

Sanjay Gupta

Karl Thomas Leinfelder

Babu Mandava

Techniques for implementing vocoders in parallel digital signal processors are described. A preferred approach is implemented in conjunction with the BOPS&#xae; Manifold Array (ManArray&#x2122;) processing architecture so that in an array of N parallel processing elements, N channels of voice communication are processed in parallel. Techniques for forcing vocoder processing of one data-frame to take the same number of cycles are described. Improved throughput and lower clock rates can be achieved.

Methods and apparatus for efficient vocoder implementations

A software patch method and apparatus using a content addressable memory (CAM) to produce a code change enable signal when a program memory address matches a patch memory address, to cause program execution of modem operation to be diverted to the patch code when an address comparison hit is achieved. The patching apparatus includes a program memory for applying program instructions onto a data bus for execution, unless an address comparison of a program address and a patch address causes application of a substitute address onto the data bus.

Patching apparatus and method for upgrading modem software code

Growing community of inventors

Chapel Hill, NC, United States of America

Navin Jaffer