Image display apparatus and method for controlling same
First Claim
1. An image display apparatus receiving an input signal for selecting a channel from an external input device, the apparatus comprising:
- a tuner capable of selecting a broadcast signal corresponding to a specific channel based on the input signal, and switching the selected broadcast signal into an image signal;
a display capable of outputting an image associated with the specific channel using the switched image signal;
a power supply provided with a battery and capable of charging the battery while electric energy is received from an exterior and supplying power to the display using the externally-received electric energy;
a power failure sensor capable of detecting a power failure during which the externally-received electric energy is cut off; and
a controller capable of supplying power to the display using the battery when power failure is detected by the power failure sensor and adjusting brightness of at least one area of the display based on a residual capacity of the battery,wherein the controller is further capable of;
controlling the power failure sensor to detect the power failure while the display is off, andcontrolling the display to turn on and present an image having a prescribed color when the power failure is sensed while the display is off,wherein the power failure sensor detects that the power failure has occurred when an inverter signal and a reference clock signal (Gclk) generated in the power supply are simultaneously switched to low levels, andwherein the power failure sensor determines that the power failure has not occurred when the inverter signal is switched to the low level before the reference clock signal.
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Accused Products
Abstract
The present disclosure relates to an image display apparatus including a battery and a method for controlling the same, and the image display apparatus, which receives an input signal for channel selection from an external input device, comprising: an antenna; a tuner for selecting a broadcast signal corresponding to a specific channel, among signals received through the antenna, on the basis of the input signal and converting the selected broadcast signal into an image signal; a display unit for outputting an image associated with the specific channel by using the converted image signal; a power supply unit which includes a battery, charges the battery while electric energy from the outside is received and supplies power to the display unit using the electric energy received from the outside; a power failure detection unit for detecting whether power failure corresponding to a cut off of the electric energy supplied from the outside occurs; and a control unit for supplying power to the display unit using the battery when the power failure detection unit detects power failure and controlling brightness of at least one area of the display unit on the basis of residual capacity of the battery.
55 Citations
19 Claims
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1. An image display apparatus receiving an input signal for selecting a channel from an external input device, the apparatus comprising:
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a tuner capable of selecting a broadcast signal corresponding to a specific channel based on the input signal, and switching the selected broadcast signal into an image signal; a display capable of outputting an image associated with the specific channel using the switched image signal; a power supply provided with a battery and capable of charging the battery while electric energy is received from an exterior and supplying power to the display using the externally-received electric energy; a power failure sensor capable of detecting a power failure during which the externally-received electric energy is cut off; and a controller capable of supplying power to the display using the battery when power failure is detected by the power failure sensor and adjusting brightness of at least one area of the display based on a residual capacity of the battery, wherein the controller is further capable of; controlling the power failure sensor to detect the power failure while the display is off, and controlling the display to turn on and present an image having a prescribed color when the power failure is sensed while the display is off, wherein the power failure sensor detects that the power failure has occurred when an inverter signal and a reference clock signal (Gclk) generated in the power supply are simultaneously switched to low levels, and wherein the power failure sensor determines that the power failure has not occurred when the inverter signal is switched to the low level before the reference clock signal. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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16. A method for controlling an image display apparatus receiving an input signal for selecting a channel from an external input device, the method comprising:
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selecting a broadcast signal corresponding to a specific channel on the basis of the input signal, and outputting an image associated with the specific channel on a display using the selected broadcast signal; charging, by a power supply, a battery while externally-supplied electric energy is received, and supplying by the power supply, power to the display using the externally-supplied electric energy; sensing a power failure, wherein sensing the power failure includes; determining that the power failure has occurred when an inverter signal and a reference clock signal (Gclk) generated in the power supply are simultaneously switched to low levels, and determining that the power failure has not occurred when the inverter signal is switched to the low level while the reference clock signal remains at a high level; supplying power to the display using the battery when the power failure occurs; and adjusting a brightness of at least one area of the display based on a residual capacity of the battery, wherein the method further comprises; sensing whether the power failure occurs while the display is off; and turning the display on and presenting an image having a prescribed color when the power failure is sensed while the display is off. - View Dependent Claims (17, 18, 19)
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Specification