A television (TV) control system for viewing limitation and screen brightness control of a smart TV, the TV control system comprising:
- a TV control device configured to generate a viewing distance detection value and an illumination level detection value, input a setting value transmitted from a smartphone, and transmit a human body distance detection value, the illumination level detection value, the setting value, and a control signal to a smart TV;
- the smart TV configured to receive the viewing distance detection value, the illumination level detection value, and the setting value which are transmitted from the TV control device, perform screen blocking and screen brightness adjustment, and change a distance and time setting value in response to the control signal;
- a smartphone configured to generate and transmit a control signal for changing distance information and a control signal for changing time setting to the TV control device;
- and
- a router connected to the smartphone and the TV control device through a communication network and configured to relay the setting value and the control signal transmitted from the smartphone to the TV control device,
- wherein the TV control device includes:
- a universal serial bus (USB) port connected to the smart TV and configured to transmit and receive the viewing distance detection value, the illumination level detection value, and the control signal to and from the smart TV;
- a human body detection sensor configured to emit infrared (IR) light to a subject, receive the IR light reflected from the subject, generate the viewing distance detection value according to a distance from the subject, and transmit the viewing distance detection value to a controller;
- an illumination level sensor configured to measure an intensity of ambient light, generate the illumination level detection value, and transmit the illumination level detection value to the controller;
- a built-in microphone configured to collect a surrounding audio signal and transmit the surrounding audio signal to the controller;
- a built-in speaker configured to output a warning audio signal;
- a built-in camera configured to capture a surrounding video and transmit the captured surrounding video to the controller;
- an IR signal output part configured to output an IR signal for controlling the smart TV;
- a controller configured to transmit the viewing distance detection value, the illumination level detection value, and the control signal transmitted from the smartphone to the smart TV;
- and
- a wireless communication part configured to communicate with an external router in a wireless manner,
- an application configured to perform viewing distance limitation, screen brightness control, and changing of the distance and time setting values is installed in the smart TV,
- the TV control device transmits the illumination level detection value detected by the illumination level sensor and the viewing distance detection value detected by the human body detection sensor to the smart TV through the USB port, and the application installed in the smart TV controls or blocks an illumination level of a video signal being displayed according to the illumination level detection value and the viewing distance detection value which are transmitted from the controller,
- the TV control device transmits the viewing distance detection value generated from the human body detection sensor to the smartphone through the wireless communication part and the router, and when it is determined that the viewing distance detection value is within a predetermined distance, the smartphone generates a control signal for blocking the video signal and transmits the control signal to the TV control device, and
- in response to the control signal for blocking the video signal transmitted from the smartphone, the TV control device generates a signal for blocking a video output of the smart TV.