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:
Mar. 12, 2013
Filed:
Jul. 02, 2012
Takao Nakagawa, Tokyo, JP;
Takashi Tachikawa, Tokyo, JP;
Naoyuki Nakamura, Tokyo, JP;
Tadashi Tsukamoto, Tokyo, JP;
Toshikatsu Hosoi, Tokyo, JP;
Hiroshi Kurakane, Tokyo, JP;
Takao Nakagawa, Tokyo, JP;
Takashi Tachikawa, Tokyo, JP;
Naoyuki Nakamura, Tokyo, JP;
Tadashi Tsukamoto, Tokyo, JP;
Toshikatsu Hosoi, Tokyo, JP;
Hiroshi Kurakane, Tokyo, JP;
NEC Corporation, Tokyo, JP;
Abstract
There are provided a CPU connection circuit and a method by two CPUs by alternately conducting a changeover between two buffers disposed there between to prevent an event that data processing cannot be fully executed by the CPU on the receiving side. There is included a memory controller which monitors whether or not an amount of data stored by a CCPUin either one of buffersandreaches a predetermined threshold value; when the amount of data stored by the CCPUin the bufferreaches the threshold value, the memory controller requests an ACPUto acquire the data stored in the buffer and changes the storage destination of data from the CCPU to the other one of the buffers; the threshold value is a value more than a unit quantity of data which the CCPUsends to the buffer