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:
Aug. 22, 2000
Filed:
May. 29, 1997
Salah U Din, Dakota Dunes, SD (US);
Gateway 2000, Inc., North Sioux City, SD (US);
Abstract
A data transfer system that relieves the central processing unit of a personal computer of the burden of controlling data transfers between mass storage devices coupled to a single device controller without utilizing main memory and which also increases the speed of such transfers. The data transfer system works with a computer having a DMA chip by causing the data to be stored in a transfer buffer instead of main memory when the device controller transfers data between the mass storage devices. The data transfer system also enables a data mirroring system for a personal computer by writing the data to the transfer buffer and also to a third mass storage device acting as a backup device. Another aspect of the data transfer system operates in computers having a local bus that couples peripherals to a central processing unit/main memory subsystem through a system controller. Data transfer logic executes in the system controller to decouple the central processing unit/main memory subsystem from the local bus while the data is transferred between the first and second mass storage devices under the control of the device controller.