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:
Nov. 23, 2004
Filed:
Mar. 21, 2002
Applicant:
Inventor:
Tsuneo Koike, Tokyo, JP;
Assignee:
NEC Electronics Corporation, Kanagawa, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G06F 1/300 ; G06F 1/200 ;
U.S. Cl.
CPC ...
G06F 1/300 ; G06F 1/200 ;
Abstract
To advance a read response in a split transaction bus system. An access time prediction circuit measures an elapsed time from a time when a read command is issued, and outputs a parking indication PI to a slave device to be read during the last clock cycle before a predicted access time Tac elapses. When receiving the parking indication PI, an arbiter parks the slave device to be read by transmitting a bus grant thereto under the control of a parking control unit unless a bus is being used, and places the parked slave device to be read at the highest priority.