Patent Number: 7,822,952

Title: Context switching device

Abstract: Provided is a context switching device capable of reducing conflicts among accesses due to retrieving and saving of contexts by plural processors. The context switching device has: a transfer unit which transfers context data, according to one of (i) the first transfer mode in which the context data is transferred continuously through cycles by a processor, and (ii) the second transfer mode in which plural pieces of the context data are transferred alternately per cycle by switching respective processors of the context data; and a control unit which (i) decides the processor to be used in the first transfer mode and the processors to be used in the second transfer mode, when there is a conflict in requests of the processors for switching context data, the number of processors being more than M, and (ii) controls the transfer unit based on the decision.

Inventors: Hemmi; Masanori (Kyoto, JP)

Assignee: Panasonic Corporation

International Classification: G06F 7/38 (20060101); G06F 9/00 (20060101); G06F 9/44 (20060101)

Expiration Date: 2018-10-26 0:00:00