Universal serial bus interface system and method

• US 6,249,825 B1
• Filed: 01/04/2000
• Issued: 06/19/2001
• Est. Priority Date: 07/02/1997
• Status: Expired due to Term

• Current Assignee: Monterey Research, LLC (Vector Capital Corporation)
• Original Assignee: Cypress Semiconductor Corporation (Infineon Technologies AG)
• Inventors: Sartore, Ronald H., Larky, Steven P.
• Primary Examiner(s): Lee, Thomas
• Assistant Examiner(s): DU, THUAN N
• Application Number:
  US09/476,923
• Time in Patent Office: 532 Days
• Field of Search: 713/1, 713/100, 710/8, 710/7, 710/9, 710/10, 320/21, 709/220, 709/221, 709/250, 711/103-105
• US Class Current: 710/8
• CPC Class Codes: G06F 13/10 Program control for peripheral devices G06F13/14 - G06F13/42 take precedence

Abstract

A system for reconfiguring a peripheral device having a first configuration connected by a computer bus and a port to a host computer. The system comprises a first circuit and a second circuit. The first circuit may be configured to download information for a second configuration from the host computer into the peripheral device over the computer bus. The second circuit may be configured to electronically simulate, over the computer bus, a physical disconnection and reconnection of the peripheral device to reconfigure the peripheral device to the second configuration.

Claims

1. A system for reconfiguring a peripheral device having a first configuration connected by a computer bus and a port to a host computer, the system comprising:

a first circuit configured to download information for a second configuration from the host computer into the peripheral device over the computer bus; and

a second circuit configured to electronically simulate a physical disconnection and reconnection of the peripheral device over said computer bus to reconfigure the peripheral device to said second configuration.

2. The system of claim 1, wherein said first configuration is a generic configuration assigned to the peripheral device and said second configuration comprises a unique manufacturer configuration.

3. The system of claim 2, wherein said first circuit is configured to (i) read an identification code from the peripheral device and (ii) select said second configuration based on said identification code.

4. The system of claim 3 further comprising a third circuit configured to select a device driver based on said information for said second configuration.

5. The system of claim 1, wherein said computer bus and port comprise a Universal Serial Bus and port.

6. The system of claim 5, wherein said first circuit further comprises a communication circuit configured to communicate said information for said second configuration to the peripheral device using the Universal Serial Bus and port.

7. The system of claim 5, wherein said information for said second configuration comprises (i) configuration data and (ii) an executable code.

8. The system of claim 7, wherein said information for said second configuration further comprises logic configuration information.

9. The system of claim 1, wherein said second circuit comprises a solid state switch.

10. The system of claim 1, wherein said second circuit comprises a reset circuit configured to reset the first or second configuration of the peripheral device.

11. A method for reconfiguring a peripheral device having a first configuration connected by a computer bus and port to a host computer, the method comprising the steps of:

(A) downloading information for a second configuration from the host computer into the peripheral device over the computer bus; and

(B) electronically simulating a physical disconnection and reconnection of the peripheral device over said computer bus to reconfigure the peripheral device to said second configuration.

12. The method of claim 11, wherein said first configuration comprises a generic configuration assigned to the peripheral device and said second configuration comprises an unique manufacturer configuration.

13. The method of claim 12, wherein step (A) comprises:

reading an identification code from the peripheral device, and

selecting said second configuration based on said identification code.

14. The method of claim 13 further comprising selecting a device driver based on said information for the second configuration.

15. The method of claim 11, wherein step (A) comprises communicating said information for the second configuration to the peripheral device using a Universal Serial Bus.

16. The method of claim 15, wherein said information for the second configuration comprises (i) configuration data and (ii) an executable code.

17. The method of claim 11, wherein step (B) comprises electronically resetting the configuration of the peripheral device, controllable by the peripheral device.

18. A system for simulating a disconnection and reconnection of a peripheral device connected by a computer bus and a port to a host computer, the system comprising:

a first circuit configured to detect the peripheral device connected to the port; and

a second circuit configured to electronically simulate a physical disconnection and reconnection of the peripheral device over said computer bus.

19. The system of claim 18, wherein said computer bus and port comprise a Universal Serial Bus and port.

20. The system of claim 18, wherein said second circuit comprises a solid state switch.