Method and apparatus for sharing peripheral devices over a network

• US 6,473,783 B2
• Filed: 11/13/2001
• Issued: 10/29/2002
• Est. Priority Date: 01/12/1998
• Status: Expired due to Term

• Current Assignee: RPX Corporation
• Original Assignee: Adaptec Incorporated (Steel Partners Holdings LP)
• Inventors: McMahon, Maureen, Goshey, Michael
• Primary Examiner(s): Maung, Zarni
• Assistant Examiner(s): Barot, Bharat
• Application Number:
  US09/993,447
• Publication Number:
  US 20020059372A1
• Time in Patent Office: 350 Days
• Field of Search: 709/200-203, 709/208, 709/212-213, 709/217-220, 709/321-322, 709/326-327
• US Class Current: 709/203
• CPC Class Codes: G06F 21/82 Protecting input, output or interconnection devices
• CPC Class Codes: G06F 3/1222 Increasing security of the print job
• CPC Class Codes: G06F 3/1239 Restricting the usage of resources, e.g. usage or user levels, credit limit, consumables, special fonts
• CPC Class Codes: G06F 3/1288 in client-server-printer device configuration
• CPC Class Codes: G06F 9/468 Specific access rights for resources, e.g. using capability register
• CPC Class Codes: H04L 67/12 specially adapted for proprietary or special-purpose networking environments, e.g. medical networks, sensor networks, networks in vehicles or remote metering networks
• CPC Class Codes: H04L 67/59 Providing operational support to end devices by off-loading in the network or by emulation, e.g. when they are unavailable
• CPC Class Codes: H04L 69/329 in the application layer [OSI layer 7]
• CPC Class Codes: Y10S 707/99938 Concurrency, e.g. lock management in shared database
• CPC Class Codes: Y10S 707/99939 Privileged access

Abstract

Disclosed is a system for transparently sharing peripheral devices over a network. The system includes a first computer having at least one peripheral device, and a second computer that is networked to the first computer. The second computer is configured to send a request to use the at least one peripheral device over the network, and the request is processed to determine whether the second computer has sharing privileges to use the at least one peripheral device. Furthermore, the first computer is configured to grant access to the request of the second computer if the second computer has the sharing privileges that enable access to the at least one peripheral device. In this embodiment, the first computer acts as a Server that can share its peripheral devices, and the second computer acts as a Client that access the Server'"'"'s peripheral devices.

Claims

1. An apparatus for sharing peripheral devices over a network, comprising:

a network of computers connected to the network;

a first computer connected to the network of computers, the first computer having a SCSI peripheral device connected thereto and having a first driver;

a second computer having a second driver, the second computer being connected to the network, the second computer being configured to communicate a SCSI command to use the SCSI peripheral device connected to the network of computers, the SCSI command being transmitted using a network protocol over the network between the second computer and the first computer to enable functional access of the SCSI peripheral device by the second computer as if the SCSI peripheral device were locally connected to the first computer.

2. An apparatus for sharing peripheral devices over a network as recited in claim 1, wherein each of the first driver and the second driver provide client/server functionality to enable sharing of the SCSI peripheral device.

3. An apparatus for sharing peripheral devices over a network as recited in claim 2, wherein the first driver and the second driver implement a send ASPI 32 command.

4. An apparatus for sharing peripheral devices over a network as recited in claim 2, wherein the first driver and the second driver implement a get ASPI 32 support info function to fund local host adapters in which a WNASPI32.DLL engine is executed, the local host adapters being connected to each of the first computer and the second computer.

5. An apparatus for sharing peripheral devices over a network as recited in claim 1, wherein the network protocol executed by each of the first computer and the second computer implements one of an IPX network protocol, a NetBEUI network protocol, a TCP/IP network protocol, and a Named Pipes network protocol.

6. An apparatus for sharing peripheral devices over a network, comprising:

a network of computers;

a first computer connected to the network of computers, the first computer having a SCSI peripheral device connected thereto;

a second computer connected to the network of computers, the second computer being configured to communicate a SCSI command to use the SCSI peripheral device connected to the network of computers, the SCSI command being transmitted over the network of computers between the second computer and the first computer to enable functional access of the SCSI peripheral device by the second computer as if the SCSI peripheral device were connected to the first computer.

7. An apparatus for sharing peripheral devices over a network as recited in claim 6, wherein the network of computers communicate using one of IPX, NetBEUI, TCP/IP, and Named Pipes network protocols.

8. An apparatus for sharing peripheral devices over a network as recited in claim 7, wherein one of the network protocols handles the transmission of the SCSI command.

9. An apparatus for sharing peripheral devices over a network as recited in claim 7, further comprising:

a first driver being run on the first computer;

a second driver being run on the second computer, the first driver being configured to enable communication of the SCSI command over the network of computers.

10. An apparatus for sharing peripheral devices over a network as recited in claim 9, wherein each of the first driver and the second driver provide client/server functionality to enable sharing of the SCSI peripheral device.

11. An apparatus for sharing peripheral devices over a network as recited in claim 9, wherein the first driver and the second driver implement a send ASPI 32 command.

12. An apparatus for sharing peripheral devices over a network as recited in claim 9, wherein the first driver and the second driver implement a get ASPI 32 support info function to fund local host adapters in which a WNASPI32.DLL engine is executed.