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:
Sep. 15, 2009
Filed:
Jan. 25, 2006
Kenyou Nagao, Sapporo, JP;
Shun Oshita, Sapporo, JP;
Shuichi Yanagihara, Sapporo, JP;
Yuji Mikami, Sapporo, JP;
Kenyou Nagao, Sapporo, JP;
Shun Oshita, Sapporo, JP;
Shuichi Yanagihara, Sapporo, JP;
Yuji Mikami, Sapporo, JP;
Seiko Epson Corporation, Tokyo, JP;
Abstract
A data transfer control device for transferring data via a bus includes a buffer controller for controlling access to a data buffer in which a command block area, a data area and status block area are prepared, and a transfer controller for controlling data transfer. The transfer controller executes, a transaction of bulk OUT transfer in a command transport to automatically send a packet including command block data written in the command block area in response to an instruction to execute automatic bulk transfer, a transaction of one of bulk OUT transfer and bulk IN transfer in a data transport to automatically execute one of sending a packet including sending data written in the data area and receiving a packet including receiving data to be written in the data area, and a transaction of bulk IN transfer in a status transport to automatically receive a packet including status block data to be written in the status block area.