WO2004001716A1 - ディスプレイ装置および節電制御装置 - Google Patents
ディスプレイ装置および節電制御装置 Download PDFInfo
- Publication number
- WO2004001716A1 WO2004001716A1 PCT/JP2002/006360 JP0206360W WO2004001716A1 WO 2004001716 A1 WO2004001716 A1 WO 2004001716A1 JP 0206360 W JP0206360 W JP 0206360W WO 2004001716 A1 WO2004001716 A1 WO 2004001716A1
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- WIPO (PCT)
- Prior art keywords
- power
- mode
- power saving
- control unit
- saving control
- Prior art date
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Classifications
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F1/00—Details not covered by groups G06F3/00 - G06F13/00 and G06F21/00
- G06F1/26—Power supply means, e.g. regulation thereof
- G06F1/32—Means for saving power
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F1/00—Details not covered by groups G06F3/00 - G06F13/00 and G06F21/00
- G06F1/26—Power supply means, e.g. regulation thereof
- G06F1/32—Means for saving power
- G06F1/3203—Power management, i.e. event-based initiation of a power-saving mode
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F1/00—Details not covered by groups G06F3/00 - G06F13/00 and G06F21/00
- G06F1/26—Power supply means, e.g. regulation thereof
- G06F1/32—Means for saving power
- G06F1/3203—Power management, i.e. event-based initiation of a power-saving mode
- G06F1/3206—Monitoring of events, devices or parameters that trigger a change in power modality
- G06F1/3215—Monitoring of peripheral devices
- G06F1/3218—Monitoring of peripheral devices of display devices
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F1/00—Details not covered by groups G06F3/00 - G06F13/00 and G06F21/00
- G06F1/26—Power supply means, e.g. regulation thereof
- G06F1/32—Means for saving power
- G06F1/3203—Power management, i.e. event-based initiation of a power-saving mode
- G06F1/3234—Power saving characterised by the action undertaken
- G06F1/325—Power saving in peripheral device
- G06F1/3265—Power saving in display device
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F1/00—Details not covered by groups G06F3/00 - G06F13/00 and G06F21/00
- G06F1/26—Power supply means, e.g. regulation thereof
- G06F1/32—Means for saving power
- G06F1/3203—Power management, i.e. event-based initiation of a power-saving mode
- G06F1/3234—Power saving characterised by the action undertaken
- G06F1/3287—Power saving characterised by the action undertaken by switching off individual functional units in the computer system
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G5/00—Control arrangements or circuits for visual indicators common to cathode-ray tube indicators and other visual indicators
- G09G5/003—Details of a display terminal, the details relating to the control arrangement of the display terminal and to the interfaces thereto
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G5/00—Control arrangements or circuits for visual indicators common to cathode-ray tube indicators and other visual indicators
- G09G5/003—Details of a display terminal, the details relating to the control arrangement of the display terminal and to the interfaces thereto
- G09G5/006—Details of the interface to the display terminal
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J9/00—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting
- H02J9/005—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting using a power saving mode
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G2320/00—Control of display operating conditions
- G09G2320/08—Arrangements within a display terminal for setting, manually or automatically, display parameters of the display terminal
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G2330/00—Aspects of power supply; Aspects of display protection and defect management
- G09G2330/02—Details of power systems and of start or stop of display operation
- G09G2330/021—Power management, e.g. power saving
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G2330/00—Aspects of power supply; Aspects of display protection and defect management
- G09G2330/02—Details of power systems and of start or stop of display operation
- G09G2330/021—Power management, e.g. power saving
- G09G2330/022—Power management, e.g. power saving in absence of operation, e.g. no data being entered during a predetermined time
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B70/00—Technologies for an efficient end-user side electric power management and consumption
- Y02B70/30—Systems integrating technologies related to power network operation and communication or information technologies for improving the carbon footprint of the management of residential or tertiary loads, i.e. smart grids as climate change mitigation technology in the buildings sector, including also the last stages of power distribution and the control, monitoring or operating management systems at local level
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D10/00—Energy efficient computing, e.g. low power processors, power management or thermal management
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D30/00—Reducing energy consumption in communication networks
- Y02D30/50—Reducing energy consumption in communication networks in wire-line communication networks, e.g. low power modes or reduced link rate
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
- Y04S20/00—Management or operation of end-user stationary applications or the last stages of power distribution; Controlling, monitoring or operating thereof
- Y04S20/20—End-user application control systems
Definitions
- the present invention relates to a display device connected to a computer main body for displaying an image and a power saving control device used for the display device.
- the display device In a display device connected to a computer and displaying images, if the computer is not used for a predetermined time after the display device is turned on, the display device is set to a power saving mode with low power consumption. Display devices have been put into practical use that have achieved power savings by shifting. However, conventional display devices usually consume about 5 W to 3 W of power even in the power saving mode.
- the current display device uses a microphone computer that has important functions for displaying the optimal display screen, such as control of display parameters and detection of a button input signal with a screen adjustment function.
- the power saving control circuit mainly controls the power saving mode.
- an object of the present invention is to provide a display device which consumes less power in a power saving mode and a power saving control device used for the display device. Disclosure of the invention
- a display device connected to the computer main body for displaying an image, a power supply unit for supplying power to the display device,
- a display unit for displaying an image based on an image signal supplied from the computer main body
- a power saving control unit that controls switching between an energizing mode in which the power supply unit is on and a power saving mode in which the power supply unit is off based on a synchronization signal included in the image signal;
- a power-saving end determining circuit that at least returns the power-saving control unit to the ON state when it is determined to return to the mode, and that consumes less power than the power-saving control unit.
- the power saving end determination circuit detects an instruction to return to the energized mode instead of the power saving control unit, the power saving control unit that has conventionally consumed power even in the power saving mode is In the power saving mode, no power supply is required, so that the power consumption of the display device in the power saving mode can be significantly reduced as compared with the conventional method.
- the power saving control unit when the power saving end determination circuit determines to return to the energizing mode, the power saving control unit returns the power saving unit to the on state by the auxiliary power while maintaining the power supply unit in the off state.
- the power-saving control unit determines whether to return from the power-saving mode to the power-on mode based on the synchronization signal when the power-on mode is restored by the auxiliary power supply, and returns to the power-on mode. When it is determined to return, it is preferable that the power supply unit is returned to the on state, and when it is determined to continue the power saving mode, the return to the on state by the auxiliary power supply is canceled.
- a power saving control device that controls switching to a power saving mode in which a supply unit is in an off state
- a power saving control unit that controls switching between the energization mode and the power saving mode based on the synchronization signal
- a power-saving end determining circuit that at least returns the power-saving control unit to the ON state when it is determined to return to the mode, and that consumes less power than the power-saving control unit.
- the power saving end determination circuit detects an instruction to return to the power saving mode instead of the power saving control unit.
- the power saving mode power supply is not required, so that the power consumption of the display device using the power saving control device of the present invention in the power saving mode can be significantly reduced as compared with the conventional method.
- FIG. 1 is a schematic diagram of a computer system to which a display device according to an embodiment of the present invention is connected.
- FIG. 2 is a schematic configuration diagram showing one embodiment of the display device of the present invention.
- FIG. 3 is a circuit diagram of the display device of the present embodiment.
- FIG. 4 is a schematic configuration diagram illustrating an embodiment of the power saving control device of the present invention. BEST MODE FOR CARRYING OUT THE INVENTION
- FIG. 1 is a schematic diagram of a computer system to which a display device according to an embodiment of the present invention is connected.
- the display device 100 is connected to a computer main body 200 by a display signal cable 101 to perform image display, and is connected to an AC power supply cable 102 via an AC power supply cable 102. Power is supplied.
- a keyboard 201 and a mouse 202 for transmitting instructions from the operator to the computer main body 200 are connected to the computer main body 200.
- AC power is supplied to the computer main body 200 via an AC power cable 203.
- FIG. 2 is a schematic configuration diagram showing one embodiment of the display device of the present invention.
- the display device 100 is a display device connected to the computer main body 200 for displaying images, and includes a power supply unit 110, a display unit 120, and a power saving unit.
- the power supply unit 110 includes a control unit 130 and a power saving end determination circuit 140.
- the power supply unit 110 supplies power to the display device 100.
- the display unit 120 includes a computer main body.
- the power saving control unit 130 includes an energization mode in which the power supply unit 110 is in an on state, The power supply unit 110 controls the switching to the power saving mode in the off state.
- the power saving end determination circuit 140 is driven by the auxiliary power for peripheral devices supplied from the computer main unit 200. From the power saving mode based on the above synchronization signal. It determines whether to return back to electrostatic mode in place of the power-saving control unit 1 3 0.
- the power saving control unit keeps the power supply unit 110 in the off state.
- the power-saving control unit 130 returns the synchronous signal to the ON state.
- whether or not to return from the power saving mode to the energizing mode is determined again. If it is determined to return to the power saving mode, the power supply unit 110 is returned to the ON state, and the power saving mode is set. If it is determined to continue, the return to the ON state by the auxiliary power supply is canceled.
- FIG. 3 is a circuit diagram of the display device of the present embodiment.
- the display device 100 has an AC input terminal 1 for inputting AC power, a power switch 2 for turning on and off the AC power, a rectifier 6 for rectifying AC power, and a A power supply creation unit that creates various control power supplies used in each unit.7.A VGA (Video Graphics Interface) connector 9 and VGA connector 9 that receive auxiliary power for image signals and peripheral devices supplied from the computer.
- Image display based on the video signals supplied from the computer via R (red), G (green), B (blue), HS (horizontal synchronization signal), and VS (vertical synchronization signal)
- Display control unit 8 Display mode for setting and controlling the display mode and parameters of image displayParameter setting control unit 24, Power supply unit 110 based on synchronization signal (see Fig. 2)
- the power supply unit 1 1 0 power saving control unit 2 1 that controls the switching of the power saving mode in the off state
- power saving end decision circuit 1 4 0 is provided.
- a power supply having a +5 V power supply terminal from the VGA connector 9 is used as a power supply for the peripheral device.
- the AC input terminal 1, the power switch 2, the rectifier 6, and the power generation unit 7 in the display device 100 correspond to an example of a power supply unit according to the present invention.
- the display unit at 0, the display control unit 8, and the display mode parameter setting control unit 24 correspond to an example of the display unit according to the present invention.
- the power saving end determination circuit 140 includes a coil 3 of the first relay mg1, a 13 contact 4 of the second relay m2, an a contact 5 of the first relay mg1, a first flip-flop 1 0, 2nd relay mg 2 coil 1 1st, 1st transistor 1 2nd, 1st AND gate —Gate 13, ⁇ R gate 14, second flip-flop 15, second AND gate 16, third flip-flop 17, second transistor 18, third relay mg3 coil 19, third
- the relay 3 is composed of an a contact 20 of the mg 3, a backflow prevention diode 22, and a b contact 23 of the third relay mg 3.
- the power saving end determination circuit 140 is configured to operate with less power consumption than the power consumption of the power saving control unit 130.
- a mechanical relay having a coil and a contact is used as the first relay mgl, the second relay mg2, and the third relay mg3.
- the “initial operation” means that the display device 100 is connected to the computer via the VGA connector 9, the power switch 2 of the display device 100 is turned off, and the power of the computer is turned on. Refers to the operation of the display device 100 in the case where it is performed.
- This display device 100 has R (red), G (green), B (blue) video signals, HS (horizontal sync signal), and VS (vertical sync signal) via the VGA connector 9 from the computer body. And a +5 V auxiliary power supply for peripheral devices.
- the power saving end determination circuit 140 is supplied via the VGA connector 9 even when the power supply unit 110 is off. Operated by auxiliary power supply.
- the * PSCL signal is a signal that the power saving control unit 21 instructs the first flip-flop 10 of the power saving end determination circuit 140 to start switching to the power saving mode.
- the output Q of the first flip-flop 10 and VG The VS (vertical synchronization signal) from the A connector 9 is input to the first AND gate 13, but since the output Q of the first flip-flop 10 is at the 0 level, the first AND gate 13 Becomes 0 level, and this output is input to the clock terminal CL of the second flip-flop 15. Therefore, the output Q of the second flip-flop 15 becomes 0 level, and this output Q and the HS (horizontal synchronization signal) from the VGA connector 9 are input to the second AND gate 16, and as a result, A 0-level output is input to the 17-flip-flop 3 clock pin CL.
- the output Q of the third flip-flop 17 becomes 0 level, so that the second transistor 18 and the coil 19 of the third relay 3 mg 3 do not operate.
- the a contact 20 of the third relay mg 3 is disconnected, and the b contact 23 of the third relay mg 3 is connected, so that the power saving control unit 21 outputs the third relay mg 3 Power is supplied from the power generator 7 through the b contact 23 of 3.
- the 0-level power saving return signal 25 output from the third flip-flop 17 is input to the power saving controller 21.
- the power-saving switch 21 when the power-saving switch 21 is turned on while the power-saving controller 21 receives power from the power generator 7 through the third contact 23 of the third relay 3 mg 3, as described above. Since the b contact 4 of the relay 2 of mg 2 is closed, the coil 3 of the first relay mg 1 is operated by the AC power supplied from the AC input terminal 1, whereby the first relay mg 1 The a contact 5 is closed, and the AC power from the AC input terminal 1 is supplied to the power generation unit 7 through the rectifier 6, and the power generation unit 7 generates various control powers.
- the control power generated by the power generation unit 7 is supplied to the display unit, display control unit 8, display mode, parameter setting control unit 24, and the third relay 1 mg 3 b contact 23 and backflow prevention.
- the power is supplied to the power saving control unit 21 through the diode 22 and the display operation by the display device is enabled.
- a power-on reset signal is transmitted from the power saving control unit 21 to set, reset, and set initial values of various registers.
- the power saving control unit 21 Based on the horizontal synchronizing signal HS and the vertical synchronizing signal VS, it is determined whether to shift to the power saving mode or to continue the energizing mode, and the level of the power saving reset signal 25 returns from the power saving mode to the energizing mode. It is determined whether or not is instructed. In this case, since the power saving return signal 25 is at the 0 level as described above, the power saving control unit 21 determines that it is not the return from the power saving mode to the energizing mode, determines the display mode, and determines the display mode and the parameter. The optimum display parameters are sent to the display unit and the display control unit 8 via the setting control unit 24.
- the video signal and the synchronization signal are supplied from the VGA connector 9 to the display unit and display control unit 8.
- the display unit and display are based on the optimal display parameters sent from the display mode and parameter setting control unit 24.
- the control unit 8 performs image display.
- the computer 200 stops sending both horizontal and vertical synchronization signals from the computer 200 when the computer has not been used for a preset time. This instructs the display device 100 (see FIG. 2) to switch from the power-on mode to the power-saving mode.
- the instruction to switch to the power saving mode from the computer main body 200 is made by stopping the transmission of both the horizontal synchronization signal and the vertical synchronization signal.
- the present invention is not limited to this example, and the switching to the power saving mode may be instructed by stopping the transmission of either the horizontal synchronization signal or the vertical synchronization signal.
- the power supply from the power supply unit to the display unit / display control unit is stopped on the display device side, but the power supply unit is While in the ON state, continue to supply power to the display mode, parameter setting control unit and power saving control unit through the rectifier and power generation unit. In this state, it starts detecting the horizontal synchronization signal and vertical synchronization signal, and waits for an instruction to return to the power-on mode from the computer.
- the power saving control unit 21 when the power saving control unit 21 detects that the supply of the horizontal synchronizing signal and the vertical synchronizing signal from the combination main unit 100 is stopped, the power saving control unit 21 transmits the power saving signal from the computer main unit. It is determined that the instruction to switch to the mode has been received, and the * PSCL signal is input to the set terminal S of the first flip-flop 10 of the power saving end determination circuit 140. As a result, the output Q of the first flip-flop 10 changes to one level, as a result, the first transistor 12 is turned on, and the coil 11 of the second relay mg 2 is turned on. As a result, the b-contact 4 of the second relay mg 2 is opened.
- the coil 3 of the first relay mg 1 is deactivated, the a-contact 5 of the first relay mg 1 is opened, the power supply to the circuit after the rectifier 6 is cut off, and the mode shifts to the power saving mode. . In this state, the power supplied from the power supply unit 110 becomes zero.
- the first AND gate 13 outputs a signal when the vertical synchronization signal VS is sent from the computer via the VGA connector 9. Then, the signal passes through the vertical synchronization signal VS and is input to the clock terminal CL of the second flip-flop 15.
- the display device 100 maintains the above-mentioned state unless an instruction to return from the power saving mode to the power-on mode is received from the computer main body.
- the computer main body 200 detects some event, for example, an input operation using a keypad or a pointing operation using a mouse
- the horizontal synchronizing signal and the vertical synchronizing signal are output from the computer main body 200.
- the display device 100 is instructed to return from the power saving mode to the power-on mode.
- the power saving control unit when the power saving control unit detects an instruction to return to the power-on mode from the computer body, it determines that the computer is returning from the power-saving mode to the power-on mode, and starts the return operation to the power-on mode. It is configured.
- the power saving control unit 21 2 1 since power is not supplied to the power saving control unit 21, even if the horizontal synchronizing signal HS and the vertical synchronizing signal VS arrive at the VGA connector 9, the power saving control unit 21 2 1 can not work. Therefore, in the display device 100 of the present embodiment, the power-saving end determining circuit 140 replaces the power-saving mode with the power-saving mode based on the synchronization signal instead of the power-saving mode.
- the power saving control unit 21 is returned to the ON state when it is determined to return to the energization mode.
- the output Q of the first flip-flop 10 at this time is kept at 1 level, so that the power saving ends.
- the first AND gate 13 of the decision circuit 140 passes the vertical synchronizing signal VS and outputs it to the clock terminal CL of the second flip-flop 15.
- the output Q of the second flip-flop 15 changes to 1 level and is input to the second AND gate 16. Since the horizontal synchronization signal HS is also input to the second AND gate 16, the output of the second AND gate 16 is input to the clock terminal CL of the third flip-flop 17, and Change the output Q of step 17 to 1 level.
- the output Q of the third flip-flop 17 turns on the second transistor 18, activates the coil 19 of the third relay mg 3, and opens the b contact 23 of the third relay mg 3. He closes the a contact 20 of the third relay mg 3.
- the output Q of the third flip-flop 17 is also input to the power saving control unit 21 as a power saving return signal 25, and is used as a determination signal when returning from the power saving mode to the power saving mode described later. .
- the power saving control unit 21 is supplied with +5 V auxiliary power from the computer via the VGA connector 9, The power saving control unit 21 returns to the ON state. Further, due to the opening of the b-contact 23 of the third relay mg 3 and the presence of the backflow prevention diode 22, the +5 V auxiliary power is supplied only to the power saving control unit 21.
- the power saving unit 110 when the power saving end determination circuit 140 determines to return to the energized mode, the power saving unit 110 maintains the power supply unit 110 in the off state and uses the auxiliary power supply. Configuration to return power saving control unit 21 to ON state Have been. Further, in the display device 100 of the present embodiment, when the power saving control unit 21 is returned to the on state by the auxiliary power supply, the power saving control unit 21 determines whether to return from the power saving mode to the energizing mode based on the synchronization signal. The power supply unit 110 is returned to the on state if it is determined that the power supply unit 110 will return to the power-on mode.If it is determined that the power saving mode will be continued, the power supply unit 110 It is configured to undo the return.
- the power saving control unit 21 determines whether or not the power saving end determination circuit 140 composed of the second flip-flop 15 and the third flip-flop 17 is correct.
- a * REPS (reset power save) signal is output to reset the circuit 140 and cancel the return of the power saving controller 21 to the on state.
- the power saving control unit 21 detects the horizontal synchronization signal and the vertical synchronization signal, a predetermined level of the horizontal synchronization signal and the vertical synchronization signal are output for a predetermined period. If the power is not supplied stably, the power saving controller 21 sends a * REPS signal. * In the power saving end determination circuit 140 that has received the REPS signal, the second flip-flop 15 and the third flip-flop 17 are reset by the output of the OR gate 14, and the second transistor 18 is reset.
- the power saving control unit 21 determines that a complete return from the power saving mode to the energized mode should be performed. * Send the PSE ND signal to the power saving end determination circuit 140.
- the PSEND signal is also input to the reset terminal R of the third flip-flop 17 through the OR gate 14, and the output Q of the third flip-flop 17 is at the 0 level.
- the second transistor 18 is turned off, the coil 19 of the third relay mg 3 is deactivated, the b contact 23 of the third relay mg 3 is closed, and the third relay mg 3 The a contact 20 of is opened.
- the supply of +5 V auxiliary power from the computer body to the power saving control unit 21 via the VGA connector 9 is cut off.
- the power saving end determination circuit 140 detects an instruction to return to the energized mode instead of the power saving control unit 21. Therefore, in the power saving mode, No power supply is required to the power supply of the display device, and thus the power consumption of the display device in the power saving mode is significantly reduced as compared with the conventional method.
- FIG. 4 is a schematic configuration diagram illustrating an embodiment of the power saving control device of the present invention.
- the power-saving control device 330 supplies a display section 320 for displaying an image based on an image signal supplied from the computer main body 200, and supplies power to the display section 320.
- the power saving control unit 340 controls switching between a power-on mode in which the power supply unit 310 is on and a power saving mode in which the power supply unit 310 is off based on the synchronization signal.
- the power-saving end determination circuit 350 is driven by an auxiliary power supply for peripheral devices supplied from the computer main body 200, and based on a synchronization signal, a power-saving mode.
- the power saving control unit 340 determines whether or not to return from the power supply mode to the power supply mode, instead of the power saving control unit 340. If it is determined to return to the power supply mode, at least the power saving control unit 340 is returned to the on state.
- the power saving end determination circuit 350 is configured to operate with less power consumption than the power saving control unit 340.
- the power saving control unit 340 and the power saving end determination circuit 350 have the same configuration as the power saving control unit 130 and the power saving end determination circuit 140 in the display device 100 described with reference to FIGS. Since the operation is performed, a detailed description is omitted.
- the example of the auxiliary power supplied from the VGA connector is described as the auxiliary power for the peripheral device from the computer that drives the power saving end determination circuit, but the present invention is not limited to this example.
- the auxiliary power may be supplied from an interface such as a USB connector or a digital visual interface (DVI) connector.
- a mechanical relay having a coil and a contact was used as the first relay mgl, the second relay mg2, and the third relay mg3.
- a semiconductor switch such as a thyristor or a photocoupler may be used. This is because the output Q of the first flip-flop 10 and the third flip-flop 17 is a TTL logic output, and the control terminal of the semiconductor switch can be controlled directly or by level conversion. Further, the rectifier 6 may be directly turned on / off using the TTL logic output from the first flip-flop 10 and the third flip-flop 17.
- the power saving end determination circuit is configured to return only the power saving control unit to the ON state when returning from the power saving mode to the energizing mode. For example, the entire device is returned to the ON state. You may be comprised so that it may be performed.
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- Engineering & Computer Science (AREA)
- Theoretical Computer Science (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- General Engineering & Computer Science (AREA)
- Computer Hardware Design (AREA)
- Emergency Management (AREA)
- Power Engineering (AREA)
- Business, Economics & Management (AREA)
- Computing Systems (AREA)
- Power Sources (AREA)
- Controls And Circuits For Display Device (AREA)
- Control Of Indicators Other Than Cathode Ray Tubes (AREA)
Abstract
Description
Claims
Priority Applications (6)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CNB028291158A CN100367344C (zh) | 2002-06-25 | 2002-06-25 | 显示单元和省电控制器 |
EP02738801A EP1517294A4 (en) | 2002-06-25 | 2002-06-25 | DISPLAY AND ENERGY SAVING |
JP2004515465A JP3983763B2 (ja) | 2002-06-25 | 2002-06-25 | ディスプレイ装置および節電制御装置 |
PCT/JP2002/006360 WO2004001716A1 (ja) | 2002-06-25 | 2002-06-25 | ディスプレイ装置および節電制御装置 |
KR1020047017761A KR100561158B1 (ko) | 2002-06-25 | 2002-06-25 | 디스플레이장치 및 절전 제어장치 |
US10/972,379 US7222250B2 (en) | 2002-06-25 | 2004-10-26 | Display unit and power save controller |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PCT/JP2002/006360 WO2004001716A1 (ja) | 2002-06-25 | 2002-06-25 | ディスプレイ装置および節電制御装置 |
Related Child Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US10/972,379 Continuation US7222250B2 (en) | 2002-06-25 | 2004-10-26 | Display unit and power save controller |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2004001716A1 true WO2004001716A1 (ja) | 2003-12-31 |
Family
ID=29808146
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2002/006360 WO2004001716A1 (ja) | 2002-06-25 | 2002-06-25 | ディスプレイ装置および節電制御装置 |
Country Status (6)
Country | Link |
---|---|
US (1) | US7222250B2 (ja) |
EP (1) | EP1517294A4 (ja) |
JP (1) | JP3983763B2 (ja) |
KR (1) | KR100561158B1 (ja) |
CN (1) | CN100367344C (ja) |
WO (1) | WO2004001716A1 (ja) |
Cited By (3)
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JP2005049651A (ja) * | 2003-07-29 | 2005-02-24 | Iiyama Corp | 表示装置 |
CN100410672C (zh) * | 2004-06-16 | 2008-08-13 | 瑞昱半导体股份有限公司 | 信号输出装置及其操作方法 |
JP2011504257A (ja) * | 2007-11-02 | 2011-02-03 | フジツウ シーメンス コンピューターズ ゲーエムベーハー | 電子装置、コンピュータ、アレンジメント、及び電子装置を制御する方法 |
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TWI249350B (en) * | 2004-12-30 | 2006-02-11 | Tatung Co Ltd | Control circuit and method thereof for reducing power consumption of a display device |
US7633560B1 (en) * | 2005-08-30 | 2009-12-15 | American Megatrends, Inc. | System and apparatus for selectively terminating a video signal based on the presence or absence of a terminating device |
CN101310323A (zh) * | 2005-10-14 | 2008-11-19 | 松下电器产业株式会社 | 显示器控制装置 |
KR101416250B1 (ko) * | 2007-10-09 | 2014-07-07 | 삼성전자 주식회사 | 영상처리장치 및 그 제어방법 |
CN101436040B (zh) * | 2007-11-14 | 2011-09-14 | 中强光电股份有限公司 | 具有省电功能的投影设备及其控制电路与方法 |
CN101551988B (zh) * | 2008-03-31 | 2011-09-21 | 神基科技股份有限公司 | 一种显示器在dpms模式运作的方法 |
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KR20100035428A (ko) * | 2008-09-26 | 2010-04-05 | 삼성전자주식회사 | 디스플레이 장치 및 방법 |
JP2010194811A (ja) * | 2009-02-24 | 2010-09-09 | Seiko Epson Corp | 印刷装置用コントローラーおよび印刷装置 |
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CN102054462B (zh) * | 2009-11-05 | 2013-08-14 | 晨星软件研发(深圳)有限公司 | 低耗电显示控制方法与相关显示控制器 |
KR101175674B1 (ko) * | 2010-01-12 | 2012-08-22 | 김창호 | 컴퓨터 주변기기의 대기전력 차단 장치 |
KR20120015890A (ko) * | 2010-08-13 | 2012-02-22 | 삼성전자주식회사 | 플렉서블 디스플레이장치 및 그 제어방법 |
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JP6110122B2 (ja) * | 2012-12-07 | 2017-04-05 | シナプティクス・ジャパン合同会社 | 集積回路装置、パネル表示装置及び表示パネルドライバ |
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CN106569572B (zh) * | 2015-10-09 | 2019-11-22 | 鸿富锦精密电子(天津)有限公司 | 主板及具有该主板的电脑控制系统 |
KR102152254B1 (ko) * | 2018-07-05 | 2020-09-04 | 지인철 | 디스플레이기의 절전 제어장치 및 그 방법 |
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2002
- 2002-06-25 EP EP02738801A patent/EP1517294A4/en not_active Withdrawn
- 2002-06-25 WO PCT/JP2002/006360 patent/WO2004001716A1/ja active IP Right Grant
- 2002-06-25 CN CNB028291158A patent/CN100367344C/zh not_active Expired - Fee Related
- 2002-06-25 KR KR1020047017761A patent/KR100561158B1/ko not_active IP Right Cessation
- 2002-06-25 JP JP2004515465A patent/JP3983763B2/ja not_active Expired - Lifetime
-
2004
- 2004-10-26 US US10/972,379 patent/US7222250B2/en not_active Expired - Fee Related
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US5483464A (en) * | 1993-03-31 | 1996-01-09 | Samsung Electronics Co., Ltd. | Power saving apparatus for use in peripheral equipment of a computer |
US5736873A (en) * | 1994-05-19 | 1998-04-07 | Samsung Electronics Co., Ltd. | Power saving control circuit for a display apparatus |
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Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2005049651A (ja) * | 2003-07-29 | 2005-02-24 | Iiyama Corp | 表示装置 |
CN100410672C (zh) * | 2004-06-16 | 2008-08-13 | 瑞昱半导体股份有限公司 | 信号输出装置及其操作方法 |
JP2011504257A (ja) * | 2007-11-02 | 2011-02-03 | フジツウ シーメンス コンピューターズ ゲーエムベーハー | 電子装置、コンピュータ、アレンジメント、及び電子装置を制御する方法 |
Also Published As
Publication number | Publication date |
---|---|
KR20050007386A (ko) | 2005-01-17 |
US7222250B2 (en) | 2007-05-22 |
JP3983763B2 (ja) | 2007-09-26 |
KR100561158B1 (ko) | 2006-03-15 |
EP1517294A1 (en) | 2005-03-23 |
JPWO2004001716A1 (ja) | 2005-10-27 |
CN1628336A (zh) | 2005-06-15 |
US20050086552A1 (en) | 2005-04-21 |
EP1517294A4 (en) | 2007-06-27 |
CN100367344C (zh) | 2008-02-06 |
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