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:
Apr. 11, 2006
Filed:
Mar. 04, 2003
Nobuyuki Saito, Sapporo, JP;
Shinsuke Kubota, Sapporo, JP;
Hiroaki Shimono, Sapporo, JP;
Kuniaki Matsuda, Sapporo, JP;
Nobuyuki Saito, Sapporo, JP;
Shinsuke Kubota, Sapporo, JP;
Hiroaki Shimono, Sapporo, JP;
Kuniaki Matsuda, Sapporo, JP;
Seiko Epson Corporation, Tokyo, JP;
Abstract
A plurality of pipe regions PIPEto PIPEe in which data transferred to and from endpoints is stored are allocated in a packet buffer (FIFO). Transfer condition information on data transfer between the pipe regions and the endpoints is set in transfer condition registers TREGto TREGe in a register section. A host (transfer) controller automatically generates a transaction for each of the endpoints based on the transfer condition information (total size, maximum packet size, transfer direction, number of continuous execution times, token issue interval, and the like) set in the transfer condition registers, and automatically transfers data between each pipe region and the endpoint. An OTG (state) controller which controls a state of USB On-The-Go is provided. The pipe regions are allocated in the packet buffer during a host operation.