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:
Jul. 16, 2019
Filed:
Mar. 31, 2016
Applicant:
Qualcomm Incorporated, San Diego, CA (US);
Inventors:
Shoichiro Sengoku, San Diego, CA (US);
Richard Dominic Wietfeldt, San Diego, CA (US);
George Alan Wiley, San Diego, CA (US);
Assignee:
QUALCOMM Incorporated, San Diego, CA (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G06F 13/364 (2006.01); G06F 13/42 (2006.01); G06F 13/26 (2006.01); G06F 13/24 (2006.01); G06F 13/36 (2006.01); G06F 13/362 (2006.01); G06F 11/30 (2006.01);
U.S. Cl.
CPC ...
G06F 13/364 (2013.01); G06F 11/3027 (2013.01); G06F 13/24 (2013.01); G06F 13/26 (2013.01); G06F 13/36 (2013.01); G06F 13/362 (2013.01); G06F 13/426 (2013.01); G06F 13/4256 (2013.01); G06F 2213/3602 (2013.01);
Abstract
To accommodate multiple masters over bus architectures supporting a single master device, a mechanism is provided for an inactive master device to assert an in-band IRQ. A current master then polls the other inactive master devices over a shared data bus to ascertain which inactive master device is asserting the IRQ. Upon identifying the asserting inactive master device, the current master device grants control of the data bus to the new master device, thereby making the inactive master the new active master device.