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:
Jun. 27, 2006
Filed:
Jul. 24, 2003
Shinichiro Fujita, Kitakyushu, JP;
Hiroyuki Kanai, Shiojiri, JP;
Akemi Ito, Hata-machi, JP;
Seiko Epson Corporation, Tokyo, JP;
Abstract
A data transfer control system receives a command packet ORB (SBP-2) transferred through a bus BUS(IEEE1394), and issues a command included in the ORB to a device connected with a bus BUS(ATA (IDE)/ATAPI). The data transfer control system sets a sufficiently large fixed DMA data length irrespective of the type of the issued command, and instructs start of DMA transfer to or from the device connected with the bus BUS. The data transfer control system aborts the DMA transfer when a device connected with BUSinforms of completion of command processing. As the fixed DMA data length, a value greater than a storage capacity of a storage or a value greater than a data length which can be designated by a command is employed. The data transfer control system issues a command included in the ORB to a device connected with the bus BUSwithout decoding the command.