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:
Jul. 11, 2006
Filed:
Mar. 06, 2003
Nobuyuki Saito, Sapporo, JP;
Yoshimi Oka, Kitahiroshima, JP;
Nobuyuki Saito, Sapporo, JP;
Yoshimi Oka, Kitahiroshima, JP;
Seiko Epson Corporation, Tokyo, JP;
Abstract
A data transfer control device includes a DMACthat writes a packet transferred from a BUS(IEEE 1394 or USB), to a SRAM, a DMACthat reads the written isochronous data from the SRAM and writes it to a SDRAM, and a DMACthat reads the written isochronous data and transfers it to a BUSside. During transmission, isochronous data is read from the SDRAM and written to SRAM, and an isochronous packet including the written isochronous data is transferred to the BUSside. The SRAM includes an isochronous data area and an asynchronous data area. The SRAM is provided insides the data transfer control device and the SDRAM is provided on outside the data transfer control device.