Patent ID: 7180417
Filing Date: 2007-02-20
Classification: G08B,Y10T

Abstract:
1. A display device comprising: an image display section for presenting a display based on an image signal; a first power supply section for supplying power to said image display section; an anti-theft section for preventing said display device from theft; and a second power supply section provided independently of said first power supply section for supplying power to said anti-theft section, said anti-theft section including a vibration sensor for sensing a shake of said display device, a vibration detection section for making a comparison between an output level from said vibration sensor and a previously determined reference level to detect the presence or absence of a vibration, a state retention section for selectively retaining a cautionary state in which caution is taken against theft of said display device and an alarming state indicating that said display device is being stolen, said state retention section making a transition from said cautionary state to said alarming state when said vibration detection section detects a vibration, an alarm section for issuing an alarm when said state retention section is in said alarming state, and an operation control section for forcedly controlling the transition of said state retention section, based on an operation by an operator.