Robert B Lester

US Patent:

20120017214, Jan 19, 2012

Filed:

Jul 16, 2010

Appl. No.:

12/837572

Inventors:

Stephen R. Shannon - San Diego CA, US
Suresh K. Venkumahanti - San Diego CA, US
Robert A. Lester - San Diego CA, US

Assignee:

QUALCOMM Incorporated - San Diego CA

International Classification:

G06F 9/46

US Classification:

718100

Abstract:

A system and method of managing a stack shared by multiple threads of a processor includes allocating a first portion of a shared stack to a first thread and allocating a second portion of the shared stack to a second thread.

US Patent:

20160239060, Aug 18, 2016

Filed:

Feb 13, 2015

Appl. No.:

14/622467

Inventors:

- San Diego CA, US
Xufeng Chen - San Diego CA, US
Robert Allan Lester - Round Rock TX, US
Manojkumar Pyla - San Diego CA, US
Peixin Zhong - San Diego CA, US

International Classification:

G06F 1/26

Abstract:

The feature size of semiconductor devices continues to decrease in each new generation. Smaller channel lengths lead to increased leakage currents. To reduce leakage current, some power domains within a device may be powered off (e.g., power collapsed) during periods of inactivity. However, when power is returned to the collapsed domains, circuitry in other power domains may experience significant processing overhead associated with reconfiguring communication channels to the newly powered domains. Provided in the present disclosure are exemplary techniques for isolating power domains to promote flexible power collapse while better managing the processing overhead associated with reestablishing data connections.