Remote computer security system for computers, printers and multifunction devices

• US 5,959,530 A
• Filed: 07/29/1998
• Issued: 09/28/1999
• Est. Priority Date: 07/29/1998
• Status: Expired due to Term

• Current Assignee: Xerox Corporation (Xerox Holdings Corp.)
• Original Assignee: Xerox Corporation (Xerox Holdings Corp.)
• Inventors: Smith, Craig A., Lupien, Gordon F. Jr.
• Primary Examiner(s): MULLEN, THOMAS J
• Application Number:
  US09/124,371
• Time in Patent Office: 426 Days
• Field of Search: 340/568.1, 340/571, 340/505, 340/825.54, 340/686.6, 340/573.4, 340/825.31, 340/825.32, 340/825.34, 235/382, 235/382.5, 399/80, 399/79, 399/81, 341/176
• US Class Current: 340/568.1
• CPC Class Codes: G05B 2219/37175 Normal encoder, disk for pulses, incremental
• CPC Class Codes: G05B 2219/41123 Correction inertia of servo
• CPC Class Codes: G05B 2219/42074 Position feedback and speed feedback, speed measured with tacho
• CPC Class Codes: G06F 21/43 wireless channels
• CPC Class Codes: G06F 21/88 Detecting or preventing theft or loss
• CPC Class Codes: G08B 13/1472 with force or weight detection

Abstract

A method of preventing theft or unauthorized use of a computer including a radio frequency identification (RFID) tag allowing use of the machine only within range of the tag and when the tag is recognized. Moving or accessing the computer without the tag in range activates a security system. The computer provides a continuous authorization signal and monitors for a received signal indication of a valid response from the RFID tag. Access is denied unless a valid response is received to the authorization signal. Upon receipt of a valid response, the computer is enabled, in particular enabled to create images on paper, on screens, or to be stored in memory.

Claims

1. In an image processing apparatus for producing images on a medium, a method of preventing unauthorized use of the apparatus comprising the steps of:

providing a continuous authorization signal from the image processing apparatus, the authorization signal being a periodic timed signal,

monitoring a receiver within the image processing apparatus for a received signal indication of a valid response to the authorization signal,

denying access to the image processing apparatus with lack of sensing a received signal indication of a valid response to the authorization signal, and

providing access to the image processing apparatus and enabling the apparatus to create images upon sensing a received signal indication of a valid response to the authorization signal.

2. The method of claim 1 wherein the step of providing access to the image processing apparatus and enabling the apparatus to create images includes the step of providing access to a service technician.

3. The method of claim 1 wherein the step of providing access to the image processing apparatus and enabling the apparatus to create images includes the step of enabling the creation of images on paper and images on a display screen.

4. The method of claim 1 wherein the step of denying access to the image processing apparatus with lack of sensing a received signal indication of a valid response to the authorization signal includes the step of turning the apparatus off.

5. The method of claim 1 wherein the step of denying access to the image processing apparatus with lack of sensing a received signal indication of a valid response to the authorization signal includes the step of providing an alarm signal.

6. The method of claim 1 wherein the step of denying access to the image processing apparatus with lack of sensing a received signal indication of a valid response to the authorization signal includes the step of initiating a power saver mode.

7. The method of claim 1 wherein the step of providing a continuous authorization signal from the image processing apparatus includes the step of providing a continuous signal in response to an event.

8. The method of claim 7 wherein the event is the physical motion of the apparatus.

9. In an image processing apparatus for producing images on a medium, a method of preventing unauthorized use of the apparatus comprising the steps of:

providing a radio frequency authorization signal from the image processing apparatus, the authorization signal including a continuous signal in response to an event,

monitoring a receiver within the image processing apparatus for a received signal indication of a valid response to the authorization signal, and

providing an alarm signal in the absence of sensing a received signal indication of a valid response to the authorization signal.

10. The method of claim 9 wherein the step of providing a radio frequency authorization signal from the image processing apparatus includes the step of providing a periodic timed signal.

11. The method of claim 9 wherein the event is the physical motion of the apparatus.