Method for break reminder and display device using the same

• US 7,741,957 B2
• Filed: 06/20/2007
• Issued: 06/22/2010
• Est. Priority Date: 06/23/2006
• Status: Active Grant

• Current Assignee: Hong Fu Jin Precision Industry (Shenzhen) Co., Ltd. (Hon Hai Precision Industry Co., Ltd.), Hon Hai Precision Industry Co., Ltd.
• Original Assignee: Hong Fu Jin Precision Industry (Shenzhen) Co., Ltd. (Hon Hai Precision Industry Co., Ltd.), Hon Hai Precision Industry Co., Ltd.
• Inventors: Wang, Wen-Wu, Wong, Shih-Fang
• Primary Examiner(s): Wu, Daniel
• Assistant Examiner(s): GIRMA, FEKADESELASS
• Application Number:
  US11/765,455
• Publication Number:
  US 20070296556A1
• Time in Patent Office: 1,098 Days
• Field of Search: None
• US Class Current: 340/309.7
• CPC Class Codes: G08B 21/18 Status alarms G08B21/02 takes precedence
• CPC Class Codes: G08B 21/24 Reminder alarms, e.g. anti-loss alarms
• CPC Class Codes: G09G 2354/00 Aspects of interface with display user
• CPC Class Codes: G09G 5/00 Control arrangements or circuits for visual indicators common to cathode-ray tube indicators and other visual indicators image data processing or generation, in general G06T

Abstract

The present invention provides method for break reminder and a display device. The display device includes a display unit; a clock counter; a distance estimator configured for detecting if the display device being used by a user, calculating distance between the user and a front of the display device, and generating a tracking signal if the distance is less than a predetermined distance; and a central processing unit configured for waiting for the tracking signal, resetting a worked time and a rested time when the tracking signal is received, signaling the clock counter to track the worked time, detecting if the worked time is less than a first predetermined time, and signaling the display unit to output the message prompt when the worked time is equal to or greater than the first predetermined time, thereby the present invention can prevent the user of the display device from fatigue.

Claims

1. 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.

2. The display device according to claim 1, wherein the central processing unit further comprises an interval detection module for signaling the clock counter to track the rested time after the work detection module signals the display unit to output the message prompt, detecting if the rested time is equal to or greater than a second predetermined time, and signaling the display unit to terminate the message prompt if the rested time is equal to or greater than the second predetermined time.

3. The display device according to claim 1, wherein if the worked time is less than the first predetermined time and the initialization module receives the tracking signal, the clock counter tracks the worked time.

4. The apparatus according to claim 1, wherein when the rested time is less than the second predetermined time and the initialization module has not received the tracking signal, the clock counter track the rested time.

5. The apparatus according to claim 1, wherein if the rested time is less than the second predetermined time and the initialization module receives the tracking signal, the interval detection module waits for the tracking signal.

6. A method for break reminder, the method comprising the steps of:

detecting if the display device is being used by the user in real-time;

calculating a distance between the user and a front of the display device after the user is detected;

comparing the distance with a predetermined distance;

determining if the distance is equal to or less than the predetermined distance;

generating a tracking signal if the distance is equal to or less than the predetermined distance;

waiting for the tracking signal;

resetting a worked time and a rested time if the tracking signal is received;

tracking the worked time;

detecting if the worked time is equal to or greater than a first predetermined time; and

outputting the message prompt when the worked time is equal to or greater than the first predetermined time;

terminating tracking the worked time if the worked time is less than the first predetermined time and the tracking signal has not been received;

tracking the rested time

detecting if the rested time is equal to or greater than a second predetermined time;

resetting the worked time and the rested time if the rested time is equal to or greater than the second predetermined time; and

waiting for the tracking signal.

7. The method according to claim 6, further comprising the steps of:

waiting for the rested time after outputting the message prompt;

detecting if the rested time is equal to or greater than a second predetermined time; and

terminating the message prompt if the rested time is equal to or greater than the second predetermined time.

8. The method according to claim 6, further comprising the step of:

if the worked time is less than the first predetermined time and the tracking signal is received, continue tracking the worked time.

9. The method according to claim 7, further comprising the step of:

if the rested time is less than the second predetermined time and the tracking signal has not been received, continuing tracking the rested time.

10. The method according to claim 7, further comprising the steps of:

if the rested time is less than the second predetermined time and the tracking signal is received, resetting the rested time and waiting for the tracking signal.