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:
Feb. 21, 2012
Filed:
Apr. 27, 2010
Ryuji Kojima, Yokohama, JP;
Tadahito Miura, Yokohama, JP;
Yoshikazu Tsuzuki, Yokohama, JP;
Shinichirou Nakajima, Yokohama, JP;
Daishi Kawabata, Yokohama, JP;
Hiroki Abukawa, Yokohama, JP;
Ryuji Kojima, Yokohama, JP;
Tadahito Miura, Yokohama, JP;
Yoshikazu Tsuzuki, Yokohama, JP;
Shinichirou Nakajima, Yokohama, JP;
Daishi Kawabata, Yokohama, JP;
Hiroki Abukawa, Yokohama, JP;
Fujitsu Semiconductor Limited, Yokohama, JP;
Abstract
A data buffer device includes: a tag value generation circuit that generates a tag value; a first buffer that stores first priority data; a second buffer that stores second priority data; and a data output circuit that outputs the first priority data or the second priority data, wherein the tag value generation circuit sets a tag value for the following second input data to a second tag value which differs from a first tag value for second preceding input data, and sets a tag value of the following first input data to a fourth tag value that is the same as a third tag value for the first preceding input data, and wherein the data output circuit outputs the first priority data or the second priority data in a first mode based on the tag values and outputs the first priority data earlier in a second mode.