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. 15, 2008
Filed:
Mar. 04, 2003
Nobuyuki Saito, Sapporo, JP;
Shinsuke Kubota, Sapporo, JP;
Hironobu Kazama, Sapporo, JP;
Seiko Epson Corporation, Tokyo, JP;
Abstract
Pipe regions PIPEto PIPEe (or endpoint regions) are allocated in a packet buffer, registers in which are set page sizes MPSto MPe (maximum packet size) and numbers of pages BPto BPe for the pipe regions are provided, and data is transferred between pipe regions and endpoints, region sizes RSto RSe of the pipe regions being set by the page sizes and numbers of pages. The page sizes and numbers of pages are set in registers that are used in common during both host operation and peripheral operation in accordance with the USB on-the-go standard. Transfer condition information such as transfer types TTto TTe is set in the registers, transactions with respect to the endpoints are automatically issued, and data is automatically transferred. Pipe regions are allocated in the packet buffer during host operation whereas endpoint regions are allocated during peripheral operation.