Power-saving circuit and method for a digital video display device

A power-saving circuit for a digital video display device, comprising:

• a transmission minimized differential signaling driving unit for converting a transmission minimized differential signaling data signal input together with a transmission minimized differential signaling clock signal to the transmission minimized differential signaling driving unit into horizontal and vertical synchronous signals and a digital video signal based on a transmission minimized differential signaling signal conversion mode, for stopping a driving of an operation for signal converting when a first level of a power-down signal is input to the transmission minimized differential signaling driving unit, and for starting the driving of the operation for signal converting when a second level of the power-down signal is input to the transmission minimized differential signaling driving unit;
• a display driving unit for driving a display unit based on the horizontal and vertical synchronous signals and the digital video signal input to the display driving unit from the transmission minimized differential signaling driving unit;
• a clock signal detecting unit for outputting a first level of a clock detecting signal when the transmission minimized differential signaling clock signal is not input to the transmission minimized differential signaling driving unit and for outputting a second level of the clock detecting signal when the transmission minimized differential signaling clock signal is input to the transmission minimized differential signaling driving unit;
• a controller for outputting the first level of the power-down signal to the transmission minimized differential signaling driving unit and for outputting a first level of a power-saving signal when the first level of clock detecting signal is input to the controller from the clock signal detecting unit, and for outputting the second level of the power-down signal to the transmission minimized differential signaling driving unit and for outputting a second level of the power-saving signal when the second level of the clock detecting signal is input to the controller from the clock signal detecting unit;
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• a power supply unit for supplying a voltage to the transmission minimized differential signaling driving unit, the display driving unit, the clock signal detecting unit and the controller, for cutting off the supply of the voltage except to the controller, the transmission minimized differential signaling driving unit and the clock signal detecting unit when the first level of the power-saving signal is input to the power supply unit from the controller, and for providing the supply of the voltage to the transmission minimized differential signaling driving unit, the display driving unit, the clock signal detecting unit and the controller when the second level of power-saving signal is input to the power supply unit from the controller.

A power-saving circuit for a digital video display device, comprising:

• a transmission minimized differential signaling driving unit for converting a transmission minimized differential signaling data signal input together with a transmission minimized differential signaling clock signal to the transmission minimized differential signaling driving unit into horizontal and vertical synchronous signals and a digital video signal based on a transmission minimized differential signaling signal conversion mode;
• a display driving unit for driving a display unit based on the horizontal and vertical synchronous signals and the digital video signal input to the display driving unit from the transmission minimized differential signaling driving unit;
• a clock signal detecting unit for outputting a first level of a clock detecting signal when the transmission minimized differential signaling clock signal is not input to the transmission minimized differential signaling driving unit, and for outputting a second level of the clock detecting signal when the transmission minimized differential signaling clock signal is input to the transmission minimized differential signaling driving unit;
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• a power supply unit for supplying a voltage to the transmission minimized differential signaling driving unit, the display driving unit and the clock signal detecting unit, for cutting off the supply of the voltage except to the clock signal detecting unit when the first level of the clock detecting signal is input to the power supply unit from the clock signal detecting unit, and for providing the supply of the voltage to the transmission minimized differential signaling driving unit, the display driving unit and the clock signal detecting unit when the second level of the clock detecting signal is input to the power supply unit from the clock signal detecting unit.

A power-saving circuit for a digital video display device, comprising:

• a transmission minimized differential signaling driving unit for converting a transmission minimized differential signaling data signal input together with a transmission minimized differential signaling clock signal to the transmission minimized differential signaling driving unit into horizontal and vertical synchronous signals and a digital video signal based on a transmission minimized differential signaling signal conversion mode, for stopping a driving of an operation for signal converting when a first level of a clock detecting signal is input to the transmission minimized differential signaling driving unit, and for starting the driving of the operation for signal converting when a second level of the clock detecting signal is input to the transmission minimized differential signaling driving unit;
• a display driving unit for driving a display unit based on the horizontal and vertical synchronous signals and the digital video signal input to the display driving unit from the transmission minimized differential signaling driving unit;
• a clock signal detecting unit for outputting the first level of the clock detecting signal to the transmission minimized differential signaling driving unit when the transmission minimized differential signaling clock signal is not input to the transmission minimized differential signaling driving unit, and for outputting the second level of the clock detecting signal to the transmission minimized differential signaling driving unit when the transmission minimized differential signaling clock signal is input to the transmission minimized differential signaling driving unit;
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• a power supply unit for supplying a voltage to the transmission minimized differential signaling driving unit, the display driving unit, and the clock signal detecting unit, for cutting off the supply of the voltage except to the transmission minimized differential signaling driving unit and the clock signal detecting unit when the first level of the clock detecting signal is input to the power supply unit from the clock signal detecting unit, and for providing the supply of the voltage to the transmission minimized differential signaling driving unit, the display driving unit, and the clock signal detecting unit when the second level of the clock detecting signal is input to the power supply unit from the clock signal detecting unit.

A power-saving method for a digital video display device, comprising the steps of:

• converting by a transmission minimized differential signaling driving unit a transmission minimized differential signaling data signal input together with a transmission minimized differential signaling clock signal to the transmission minimized differential signaling driving unit into horizontal and vertical synchronous signals and a digital video signal based on a transmission minimized differential signaling signal conversion mode;
• driving by a display driving unit a display unit based on the horizontal and vertical synchronous signals and the digital video signal input from the transmission minimized differential signaling driving unit;
• outputting by a clock signal detecting unit a first level of a clock detecting signal when the transmission minimized differential signaling clock signal is not input to the transmission minimized differential signaling driving unit and outputting by the clock signal detecting unit a second level of the clock detecting signal when the transmission minimized differential signaling clock signal is input to the transmission minimized differential signaling driving unit;
• outputting by a controller a first level of a power-saving signal when the first level of the clock detecting signal is input to the controller from the clock signal detecting unit, and outputting by the controller a second level of the power-saving signal when the second level of the clock detecting signal is input to the controller from the clock signal detecting unit;
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• supplying by a power supply unit a voltage to the transmission minimized differential signaling driving unit, the controller, the clock signal detecting unit and the display driving unit, cutting off by the power supply unit the supply of the voltage except to the controller and the clock signal detecting unit when the first level of the power-saving signal is input to the power supply unit from the controller, and providing by the power supply unit the supply of the voltage to the transmission minimized differential signaling driving unit, the controller, the clock signal detecting unit and the display driving unit when the second level of the power-saving signal is input to the power supply unit from the controller.

A power-saving method for a digital video display device, comprising the steps of:

• converting by a transmission minimized differential signaling driving unit a transmission minimized differential signaling data signal input together with a transmission minimized differential signaling clock signal to the transmission minimized differential signaling driving unit into horizontal and vertical synchronous signals and a digital video signal based on a transmission minimized differential signaling signal conversion mode, stopping by the transmission minimized differential signaling driving unit a driving of an operation for signal converting when a first level of a power-down signal is input to the transmission minimized differential signaling driving unit, and starting by the transmission minimized differential signaling driving unit the driving of the operation for signal converting when a second level of the power-down signal is input to the transmission minimized differential signaling driving unit;
• driving by a display driving unit a display unit based on the horizontal and vertical synchronous signals and the digital video signal input to the display driving unit from the transmission minimized differential signaling driving unit;
• outputting by a clock signal detecting unit a first level of a clock detecting signal when the transmission minimized differential signaling clock signal is not input to the transmission minimized differential signaling driving unit and outputting by the clock signal detecting unit a second level of the clock detecting signal when the transmission minimized differential signaling clock signal is input to the transmission minimized differential signaling driving unit;
• outputting by a controller the first level of the power-down signal to the transmission minimized differential signaling driving unit and outputting by the controller a first level of a power-saving signal when the first level of clock detecting signal is input to the controller from the clock signal detecting unit, and outputting by the controller the second level of the power-down signal to the transmission minimized differential signaling driving unit and outputting by the controller a second level of the power-saving signal when the second level of the clock detecting signal is input to the controller from the clock signal detecting unit;
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• supplying by a power supply unit a voltage to the transmission minimized differential signaling driving unit, the display driving unit, the clock signal detecting unit and the controller, cutting off by the power supply unit the supply of the voltage except to the controller, the transmission minimized differential signaling driving unit and the clock signal detecting unit when the first level of the power-saving signal is input to the power supply unit from the controller, and providing by the power supply unit the supply of the voltage to the transmission minimized differential signaling driving unit, the display driving unit, the clock signal detecting unit and the controller when the second level of power-saving signal is input to the power supply unit from the controller.

A power-saving method for a digital video display device, comprising the steps of:

• converting by a transmission minimized differential signaling driving unit a transmission minimized differential signaling data signal input together with a transmission minimized differential signaling clock signal to the transmission minimized differential signaling driving unit into horizontal and vertical synchronous signals and a digital video signal based on a transmission minimized differential signaling signal conversion mode;
• driving by a display driving unit a display unit based on the horizontal and vertical synchronous signals and the digital video signal input to the display driving unit from the transmission minimized differential signaling driving unit;
• outputting by a clock signal detecting unit a first level of a clock detecting signal when the transmission minimized differential signaling clock signal is not input to the transmission minimized differential signaling driving unit, and outputting by the clock signal detecting unit a second level of the clock detecting signal when the transmission minimized differential signaling clock signal is input to the transmission minimized differential signaling driving unit;
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• supplying by a power supply unit a voltage to the transmission minimized differential signaling driving unit, the display driving unit and the clock signal detecting unit, cutting off by the power supply unit the supply of the voltage except to the clock signal detecting unit when the first level of the clock detecting signal is input to the power supply unit from the clock signal detecting unit, and providing by the power supply unit the supply of the voltage to the transmission minimized differential signaling driving unit, the display driving unit and the clock signal detecting unit when the second level of the clock detecting signal is input to the power supply unit from the clock signal detecting unit.

A power-saving method for a digital video display device, comprising the steps of:

• converting by a transmission minimized differential signaling driving unit a transmission minimized differential signaling data signal input together with a transmission minimized differential signaling clock signal to the transmission minimized differential signaling driving unit into horizontal and vertical synchronous signals and a digital video signal based on a transmission minimized differential signaling signal conversion mode, stopping by the transmission minimized differential signaling driving unit a driving of an operation for signal converting when a first level of a clock detecting signal is input to the transmission minimized differential signaling driving unit, and starting by the transmission minimized differential signaling driving unit the driving of the operation for signal converting when a second level of the clock detecting signal is input to the transmission minimized differential signaling driving unit;
• driving by a display driving unit a display unit based on the horizontal and vertical synchronous signals and the digital video signal input to the display driving unit from the transmission minimized differential signaling driving unit;
• outputting by a clock signal detecting unit the first level of the clock detecting signal to the transmission minimized differential signaling driving unit when the transmission minimized differential signaling clock signal is not input to the transmission minimized differential signaling driving unit, and outputting by the clock signal detecting unit the second level of the clock detecting signal to the transmission minimized differential signaling driving unit when the transmission minimized differential signaling clock signal is input to the transmission minimized differential signaling driving unit;
• and
• supplying by a power supply unit a voltage to the transmission minimized differential signaling driving unit, the display driving unit, and the clock signal detecting unit, cutting off by the power supply unit the supply of the voltage except to the transmission minimized differential signaling driving unit and the clock signal detecting unit when the first level of the clock detecting signal is input to the power supply unit from the clock signal detecting unit, and providing by the power supply unit the supply of the voltage to the transmission minimized differential signaling driving unit, the display driving unit, and the clock signal detecting unit when the second level of the clock detecting signal is input to the power supply unit from the clock signal detecting unit.

A power-saving circuit for a digital video display device having a transmission minimized differential signaling driving unit having a signal conversion mode for converting a transmission minimized differential signaling data signal and a transmission minimized differential signaling clock signal input to the transmission minimized differential signaling driving unit into horizontal and vertical synchronous signals and a digital video signal, a display driving unit for driving a display unit based on the horizontal and vertical synchronous signals and the digital video signal input from the transmission minimized differential signaling driving unit and a power supply unit for supplying a voltage to the transmission minimized differential signaling driving unit and the display driving unit, said power-saving circuit comprising:

• a clock signal detecting unit outputting a first level of a clock detecting signal when the transmission minimized differential signaling clock signal is not input to the transmission minimized differential signaling driving unit and outputting a second level of the clock detecting signal when the transmission minimized differential signaling clock signal is input to the transmission minimized differential signaling driving unit;
• said power supply unit cutting off the supply of the voltage to at least one of the transmission minimized differential signaling driving unit and the display driving unit when the clock signal detecting unit outputs the first level of the clock detecting signal, and providing the supply of the voltage to the transmission minimized differential signaling driving unit and the display driving unit when the clock signal detecting unit outputs the second level of the clock detecting signal.