Power controlling system
AssigneeLG Electronics Inc.
InventorYeo Sung Yun
Life of this patent
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Abstract
The present invention relates to a power controlling system for a display. When Display Power Management signals, i.e., DPMF/DPMS signals, output from Micom, the controller, are all “Low” and “Low”, a main power switch is turned off. Therefore, power is not supplied to a secondary side of a main transformer and only the Micom is provided with power. As a result, the display enters to a power off mode, wherein power consumption is less than 1 Watt.
Claims49
A power controlling system, comprising:
- a power supply means for rectifying and/or compensating an input power;
- a plurality of transformers for receiving power from the power supply means and for outputting a voltage therefrom;
- a controller for controlling a power circuit and for outputting a plurality of DPM control signals according to DPM mode;
- a power control means connected to the transformers and the controller, for controlling power to other elements except the controller according to the DPM mode;
- and
- a transformer controller for outputting power to control the transformers under the control of the power control means.
A power controlling system having a main transformer and a sub transformer, which, in response to a first and second DPM signals output from a display controller, induces from a AC voltage being input from outside at least one voltage for use in a display from secondary sides of the main transformer and the sub transformer and outputs the induced voltages, the system comprising:
- a first power-saving part connected to an arbitrary point of a secondary side of the main transformer, for outputting a predetermined voltage in response to the first DPM signal output from the controller;
- a second power-saving part connected to an arbitrary point of a secondary side of the main transformer, for outputting a predetermined voltage in response to the second DPM signal output from the controller;
- a main power switch connected to one end of a primary side of the main transformer, for controlling an operation of the main transformer;
- and
- a transformer controller for controlling an operation of the main power switch according to an operation of the second power-saving part.
A power controlling method, comprising:
- determining an input DPM mode to a power-saving part used as a power control means;
- when input DPM signals are all low level signals, controlling an output of the power-saving part according to the input signals;
- under an operation of the power-saving part or an output thereof, controlling at least one of the power-saving part, another power-saving part, and a transformer controller used as a main power controller;
- and
- after controlling the main power controller, operating a sub power to supply power only to the controller.
A power controlling method, comprising:
- inputting at least one low-level DPM signal to a power-saving part;
- controlling the power-saving part, another power-saving part, or a light-transmitting part/a light-receiving part of a main power controller, under an operation of the power-saving part or an output thereof;
- controlling a main transformer, in a main power switch, by using the controlled output;
- and
- operating a sub transformer to apply a voltage only to Micom used as a controller.
Dependencies are inferred from the claim text.