United States Patent  [ii] Patent Number: 5,680,553
Sharma et aL  Date of Patent: Oct. 21,1997
 HIGH-SPEED TRANSFER OF DATA BETWEEN A PC COMPATD3LE MICROCOMPUTER AND A BUS DEVICE
 Inventors: Raghu Sharma, North Oaks; Steven A.
Tuckner. Lake Elmo, both of Minn.
 Assignee: Multi-Tech Systems, Inc., Mounds
 AppL No.: 774y469
 Filed: Oct 10,1991
 Int CL6 G06F 3/00
 U.S. CI 395/250
 Field of Search 395/650, 575,
 References Cited
U.S. PATENT DOCUMENTS
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4,663,777 5/1987 Szeto 379/88
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Copy of an abstract of JP 2025157, published Jan. 26,1990, searched from World Patents Index.
Copy of an abstract of AU 8313583, published Oct 27, 1983, searched from British Library through Patent Express.
Multi-Tech Systems, Inc., "The New Intelligent Serial Interface", Jan., 1991, product brochure.
Comdex, Fall 1990, Las Vegas, NV, Nov. 12-16, trade show.
Comdex, Spring 1991, Atlanta, GA, May 20-23, trade show.
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Primary Examiner—Parshotam S. Lall
Attorney, Agent, or Firm—Schwegman, Lundberg,
Woessner & Kluth, P.A.
A method for the high-speed transfer of data between an IBM compatible personal computer (PC) and a bus device. A DMA controller is placed on the bus device to by-pass the PC's DMA controller. High-level terminate and stay resident software on the PC uses a combination of the DMA controller on the bus device and low level DMA controller routines to transfer the data between the PC and the bus device.
2 Claims, 5 Drawing Sheets