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:
Dec. 29, 2015
Filed:
Mar. 15, 2010
Yuji Hara, Machida, JP;
Hisashi Ishikawa, Urayasu, JP;
Akinobu Mori, Kawasaki, JP;
Takeo Kimura, Yokohama, JP;
Hirowo Inoue, Kawasaki, JP;
Yuji Hara, Machida, JP;
Hisashi Ishikawa, Urayasu, JP;
Akinobu Mori, Kawasaki, JP;
Takeo Kimura, Yokohama, JP;
Hirowo Inoue, Kawasaki, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
A data processing apparatus can reduce an occupancy rate of a ring bus by suppressing occurrence of a stall packet, and can change a processing sequence. In the data processing apparatus, a buffer is provided in each communication unit connecting the ring bus and the associated processing unit. Transfer of data from the communication unit to the processing unit is controlled by an enable signal. Consequently, occurrence of a stall packet is suppressed. Accordingly, frequency of occurrence of a deadlock state is reduced by decreasing the occupancy rate of the ring bus.