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:
Aug. 07, 2012
Filed:
May. 19, 2010
Hiroshige Abe, Tokyo, JP;
Isamu Mochizuki, Tokyo, JP;
Mika Mizutani, Tokyo, JP;
Renesas Electronics Corporation, Kawasaki-shi, JP;
Abstract
The present invention is directed to lessen burden at the time of solving a conflict of overlapping processes in processes for a plurality of interruption factors. On completion of data transfer to an external memory, a data transfer completion interruption of high priority is generated. In the case where data transfer of predetermined number of packets is not completed in reception interruption, a timer interruption of low priority is generated. Before processing data in an external memory responding to the interruption, the number of transfer packets is obtained from a counter. After restart of reception, the counter stores the number of transfer restart packets. After obtaining the number of transfer packets from a counter responding to the occurrence of the timer interruption, a data transfer completion interruption is generated. According to the obtained number of transfer packets, execution of either a process responding to occurrence of the timer interruption or a process responding to occurrence of the data transfer completion interruption is omitted.