Patent ID: 7741957

Claim:
A display device for break reminder, the display device comprising: a display unit being configured for outputting data comprising a message prompt; a clock counter being configured for tracking a worked time and a rested time; a distance estimator being configured for detecting if the display device is being used by a user, calculating a distance between the user and a front of the display device, comparing the distance with a predetermined distance, and generating a tracking signal if the distance is equal to or less than the predetermined distance; and a central processing unit comprising: an initialization module for waiting for the tracking signal, resetting the worked time and the rested time if the tracking signal is received; and a work detection module for signaling the clock counter to track the worked time, comparing the worked time with a first predetermined time, and signaling the display unit to display the message prompt if the worked time is equal to or greater than the first predetermined time; wherein if the worked time is less than the first predetermined time and the initialization module has not received the tracking signal, the interval detection module signals the clock counter to terminate tracking the worked time and track the rested time, detects if the rested time is equal to or greater than the second predetermined time; if the rested time is equal to or greater than the second predetermined time, the interval detection module waits for the tracking signal.