DISPLAY DEVICE WITH ANTI-CRIME SECURITY FUNCTION

• US 20090109015A1
• Filed: 07/15/2008
• Published: 04/30/2009
• Est. Priority Date: 10/31/2007
• Status: Active Grant

• Current Assignee: Fujitsu Limited
• Original Assignee: Fujitsu Limited
• Inventors: Ueno, Keizou
• Granted Patent: US 8,149,101 B2
• Time in Patent Office: Days
• US Class Current: 340/500
• CPC Class Codes: G06F 21/316 by observing the pattern of computer usage, e.g. typical user behaviour
• CPC Class Codes: G06F 21/74 operating in dual or compartmented mode, i.e. at least one secure mode
• CPC Class Codes: G06F 21/83 input devices, e.g. keyboards, mice or controllers thereof
• CPC Class Codes: G06F 2221/2105 Dual mode as a secondary aspect
• CPC Class Codes: G08B 13/19 using infrared-radiation detection systems G08B13/194 takes precedence
• CPC Class Codes: G08B 13/19697 Arrangements wherein non-video detectors generate an alarm themselves
• CPC Class Codes: G08B 15/001 Concealed systems, e.g. disguised alarm systems to make covert systems
• CPC Class Codes: G08B 25/001 Alarm cancelling procedures or alarm forwarding decisions, e.g. based on absence of alarm confirmation

Abstract

A control unit of a display device controls the display device in a normal mode of operation to operate in a normal state. The control unit controls the display device to enter into an anti-crime security mode of operation, when a state representing that the external information processing device may not be currently used is determined. The control unit cancels the anti-crime security mode of operation, when the information indicative of an authorized user for confirmation has been entered through the operation buttons by a user in the anti-crime security mode of operation. The control unit controls the display device to operate in an alarm mode of operation, when information indicative of the authorized user for confirmation has not been entered by a user in the anti-crime security mode of operation. The control unit performs an alarm operation in the alarm mode of operation.

Claims

1. A display device comprising:

a display unit which displays images represented by displaying video signals received from an external information processing device, a detector which detects an ambient environment condition, a memory which stores information indicative of an authorized user, operation buttons, and a control unit, wherein

said control unit controls said display device in a normal mode of operation to operate in a normal state according to an information signal from the external information processing device,

said control unit controls said display device to enter into an anti-crime security mode of operation, when a state representing that the external information processing device may not be currently used is determined,

said control unit cancels the anti-crime security mode of operation, when it is determined that information indicative of the authorized user for confirmation has been entered through the operation buttons by a user in the anti-crime security mode of operation,

said control unit controls said display device to operate in an alarm mode of operation, when information indicative of the authorized user for confirmation has not been entered by a user in the anti-crime security mode of operation, and

said control unit performs an alarm operation in the alarm mode of operation.

2. The display device according to claim 1, wherein said detector is a human sensor, and

said control unit controls said display device to enter into the anti-crime security mode of operation, when it is determined that absence of a human has been detected by said human sensor.

3. The display device according to claim 1, wherein said detector is a brightness sensor, and

said control unit controls said display device to enter into the anti-crime security mode of operation, when it is determined that ambient brightness detected by the brightness sensor is lower than a threshold.

4. The display device according to claim 1, wherein said control unit controls said display device to enter into the anti-crime security mode of operation, when it is determined that no video signal has been received from the external information processing device.

5. The display device according to claim 1, wherein said control unit raises a detection sensitivity of the detector as a human sensor in the anti-crime security mode of operation.

6. The display device according to claim 1, wherein said control unit produces a visual or audio alarm on said display unit in the alarm mode of operation.

7. The display device according to claim 1, wherein said control unit cancels the alarm mode of operation, when the information indicative of an authorized user has been entered through the operation buttons by a user in the alarm mode of operation.

8. The display device according to claim 2, wherein said control unit cancels the alarm mode of operation, when the information indicative of an authorized user has been entered through the operation buttons by a user in the alarm mode of operation.

9. The display device according to claim 3, wherein said control unit cancels the alarm mode of operation, when the information indicative of an authorized user has been entered through the operation buttons by a user in the alarm mode of operation.

10. The display device according to claim 1, wherein the external information processing device is a main body of a personal computer.

11. A display device comprising:

a display unit which displays images represented by displaying video signals received from an external information processing device, a detector which detects an ambient environment condition, a memory which stores information indicative of an authorized user, operation buttons, and a control unit, wherein

said control unit controls said display device in a normal mode of operation to operate in a normal state according to an information signal from the external information processing device,

said control unit controls said display device to enter into an anti-crime security mode of operation, when a state representing that the external information processing device may not be currently used is detected by the detector,

said control unit cancels the anti-crime security mode of operation, when it receives information indicative of the authorized user from the external information processing device in the anti-crime security mode of operation,

said control unit controls said display device to enter into an alarm mode of operation, when it does not receive information indicative of the authorized user from the external information processing device in the anti-crime security mode of operation, and

said control unit performs an alarm operation in the alarm mode of operation.

12. The display device according to claim 11, wherein said detector is a human sensor, and

said control unit controls said display device to enter into the anti-crime security mode of operation, when it is determined that absence of a human has been detected by said human sensor.

13. The display device according to claim 11, wherein said detector is a brightness sensor, and

said control unit controls said display device to enter into the anti-crime security mode of operation, when it is determined that ambient brightness detected by the brightness sensor is lower than a threshold.

14. The display device according to claim 11, wherein said control unit controls said display device to enter into the anti-crime security mode of operation, when it is determined that no video signal has been received from the external information processing device.

15. The display device according to claim 11, wherein said control unit raises a detection sensitivity of the detector as a human sensor in the anti-crime security mode of operation.

16. The display device according to claim 11, wherein said control unit produces a visual or audio alarm on said display unit in the alarm mode of operation.

17. The display device according to claim 11, wherein said control unit cancels the alarm mode of operation, when it receives the information indicative of an authorized user from the external information processing device in the alarm mode of operation.

18. The display device according to claim 12, wherein said control unit cancels the alarm mode of operation, when it receives the information indicative of an authorized user from the external information processing device in the alarm mode of operation.

19. The display device according to claim 13, wherein said control unit cancels the alarm mode of operation, when it receives the information indicative of an authorized user from the external information processing device in the alarm mode of operation.

20. The display device according to claim 11, wherein the external information processing device is a main body of a personal computer.