CN104284115A - Quick starting method for liquid crystal television - Google Patents
Quick starting method for liquid crystal television Download PDFInfo
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- CN104284115A CN104284115A CN201310271311.7A CN201310271311A CN104284115A CN 104284115 A CN104284115 A CN 104284115A CN 201310271311 A CN201310271311 A CN 201310271311A CN 104284115 A CN104284115 A CN 104284115A
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Abstract
A quick starting method for a liquid crystal television comprises the steps of: in a standby mode, outputting a standby power by a power supply to an optical sensor; when the optical sensor detects a fact that a brightness change speed of ambient light exceeds a preset value, entering a pre-starting mode, outputting a first main power by the power supply to an image processor, and outputting a second main power as an input power of a backlight driving circuit, but the image processor does not output a signal and duty ratio of the backlight driving circuit is zero; and when an outer starting command input is detected in the pre-starting mode, entering a normal operation mode. According to the quick starting method for the liquid crystal television, the liquid crystal television can quickly enter the normal operation mode for displaying a picture when the outer starting command which is input by the user is received, so that the user feels ultrashort starting time and an excellent using sense can be generated.
Description
Technical field
The invention relates to a kind of fast starting method, and relate to the fast starting method of a kind of LCD TV (liquid-crystal display television, LCD TV) especially.
Background technology
Fig. 1 and Fig. 2 is respectively a kind of system architecture diagram and starting-up method flow chart thereof of existing LCD TV.Please first see Fig. 1, existing LCD TV comprises power panel 1, mainboard 2 and display floater 3.Power panel 1 is provided with a power supply unit, this power supply unit comprises Electromagnetic interference filter 11, bridge rectifier 12, merit because of corrector 13, main power source transducer 14, standby power transducer 15 and power switch 16.Mainboard 2 is provided with microcontroller (microcontroller unit, MCU) 21, remote control circuit 22, image interface circuit 23, image processor 24 and optical sensor 25.Display floater 3 is provided with time schedule controller 31, liquid crystal display screen 32, backlight drive circuit 33 and backlight module 34.Electric property coupling relation between each assembly, to indicate supply coupling relation and power supply direction of transfer thereof with the solid line of arrow, and signal or data couple relation and signal thereof or data transmission direction to be with the dotted line of arrow to indicate.
Please simultaneously see Fig. 1 and Fig. 2, in step S11, after AC power input, AC power suppresses conducting noise through Electromagnetic interference filter 11, again after bridge rectifier 12 rectification, directly through merit because corrector 13 is input to standby power transducer 15, standby power Vsb and internal electric source Vcc is converted to by standby power transducer 15, now internal electric source Vcc cannot send out to power to merit because of the controller in corrector 13 and main power source transducer 14 through power switch 16, therefore main power source transducer 14 can not export main power source Vm1 and Vm2, LCD TV is in standby mode and shows without picture.When LCD TV is in standby mode, in step S12, power supply unit only exports standby power Vsb and powers to MCU 21 and remote control circuit 22, remote control circuit 22 presses external command that the button on remote controller sends for receiving user and this external command is sent to MCU 21, in step S13, judge by MCU 21 external command whether this external command starts shooting.Be not the external command of start if judge, then MCU 21 is considered as invalid external command, and LCD TV keeps standby mode.
It is the external command of start if judge, then control LCD TV is entered normal mode of operation by MCU 21, now in step S14, the first out-put supply enabling signal PS_ON of MCU 21, to control power switch 16, internal electric source Vcc is sent out to power to merit because of the controller in corrector 13 and main power source transducer 14, therefore in step S15, main power source transducer 14 starts to export main power source Vm1 and Vm2 and powers to other all component.Main power source Vm1 is used for power supply to image interface circuit 23, image processor 24, optical sensor 25, time schedule controller 31 and liquid crystal display screen 32, so that image interface circuit 23 starts to receive the inputs such as the video provided as wireless or cable television program or video player, in step S16, image processor 24 outputs to time schedule controller 31 after starting to carry out the process such as demodulation, decoding or convergent-divergent to the input video that image interface circuit 23 receives, then controls liquid crystal display screen 32 by time schedule controller 31 and show corresponding picture.Main power source Vm2 is used for providing backlight drive circuit 33 input power, and in step S17, this input power is converted to high voltage source and provides backlight to drive backlight module 34 by backlight drive circuit 33, makes user be seen the picture that liquid crystal display screen 32 shows.
When LCD TV is in normal mode of operation, power supply unit still can export standby power Vsb and power to MCU 21 and remote control circuit 22, remote control circuit 22 continues to receive user and presses external command that the button on remote controller sends and this external command is sent to MCU 21, in step S18, judge by MCU 21 external command whether this external command shuts down.Be not the external command of shutdown if judge, then MCU 21 carries out corresponding control action according to this external command, and LCD TV keeps normal mode of operation and has picture to show.Be the external command of shutdown if judge, then control LCD TV is got back to the standby mode of step S12 by MCU 21.In addition, when LCD TV is in normal mode of operation, optical sensor 25 can be detected surround lighting and detecting result is sent to MCU 21, MCU 21 judges it is at dim environment or brighter environment according to detecting result, if at dim environment, controlling back light drive circuit 33 adjusts backlight module 34 and provides and may produce dazzling sense of discomfort compared with the backlight of low-light level to reduce when user watches, if at brighter environment, controlling back light drive circuit 33 adjusts backlight module 34 provides the backlight of higher brightness to show with the detail content of improving picture.
But, available liquid crystal TV received after user's power knob pressed on remote controller sends the external command of start in stand-by mode to the available machine time demonstrated needed for picture, namely the time needed for S14 to the S17 of step shown in Fig. 2, usually need cost by more than more than 10 seconds, easily allow user leave bad use sensation.
Summary of the invention
Object of the present invention is proposing a kind of fast starting method of LCD TV, and user can be allowed to feel, and the available machine time is quite short.
For achieving the above object, the present invention proposes a kind of fast starting method of LCD TV, and wherein, LCD TV comprises power supply unit, MCU, optical sensor, image processor and display floater.The fast starting method of LCD TV comprises: when LCD TV is in standby mode, and power supply unit exports standby power and powers to MCU and optical sensor.When the brightness pace of change that optical sensor detects surround lighting exceedes default value, MCU controls LCD TV and enters pre-power on mode.When LCD TV is in pre-power on mode, MCU control power supply unit exports the first main power source and powers to image processor, and export the second main power source as the input power of the backlight drive circuit of display floater, and MCU controls image processor does not output signal and the duty ratio controlling backlight drive circuit is zero.When LCD TV is in pre-power on mode and MCU detects the external command input of start, MCU controls LCD TV and enters normal mode of operation.
In an embodiment of the present invention, the fast starting method of LCD TV also can comprise: when LCD TV is in standby mode, the standby power that power supply unit exports also is powered to the remote control circuit of LCD TV or key circuit, wherein, MCU detects the input of the external command of start by remote control circuit or key circuit.
In an embodiment of the present invention, the fast starting method of LCD TV also can comprise: when LCD TV is in pre-power on mode, MCU control power supply unit export the first main power source also power to the time schedule controller of display floater, and MCU also Control timing sequence controller do not output signal.
In an embodiment of the present invention, the fast starting method of LCD TV also can comprise: when LCD TV is in pre-power on mode, when MCU starts timing and do not detect the external command input of start in the given time, MCU controls LCD TV and gets back to standby mode.
In an embodiment of the present invention, the fast starting method of LCD TV also can comprise: when LCD TV is in normal mode of operation, and MCU controls backlight drive circuit again duty ratio after controlling image processor output signal is non-vanishing to make backlight module provide backlight.
LCD TV of the present invention utilizes the detecting result of optical sensor to surround lighting to judge in stand-by mode, and whether the brightness pace of change of surround lighting has exceedes default value, if have, represent that LCD TV has by the sign used, therefore LCD TV enters pre-power on mode look-ahead power supply unit and exports first and second main power source, make image interface circuit and image processor start to receive input video to go forward side by side row relax but do not output signal, and backlight drive circuit starts to receive input power but does not change output, therefore do not have too many power consumption, but can entering normal mode of operation demonstrates picture at once when receiving the external command of start of user's input, user can be allowed to feel, and the available machine time is quite short and leave fabulous use sensation.
In order to allow, the present invention is above-mentioned can be become apparent with other objects, features and advantages, preferred embodiment cited below particularly, and coordinates institute's accompanying drawings, is described in detail below.
Accompanying drawing explanation
Fig. 1 and Fig. 2 is respectively a kind of system architecture diagram and starting-up method flow chart thereof of existing LCD TV.
Fig. 3 and Fig. 4 is respectively system architecture diagram and the fast starting method flow chart thereof of LCD TV according to an embodiment of the invention.
Fig. 5 is the fast starting method flow chart of LCD TV according to another embodiment of the present invention.
Label declaration
1: power panel
11: Electromagnetic interference filter
12: bridge rectifier
13: merit is because of corrector
14: main power source transducer
15: standby power transducer
16: power switch
2,2 ': mainboard
21：MCU
22: remote control circuit
23: image interface circuit
24: image processor
25: optical sensor
3: display floater
31: time schedule controller
32: liquid crystal display screen
33: backlight drive circuit
34: backlight module
Vcc: internal electric source
Vm1, Vm2: main power source
Vsb: standby power
PS_ON: power supply starting signal.
Embodiment
In the following description, for presenting the consistency illustrated the present invention, therefore in various embodiments, if there is the same or analogous assembly of function and structure can by identical element numbers and title.Another is know to present feature of the present invention, eliminates the electric property coupling relation between part known assemblies and assembly in institute's accompanying drawings.
Fig. 3 and Fig. 4 is respectively system architecture diagram and the fast starting method flow chart thereof of LCD TV according to an embodiment of the invention.Please first see Fig. 3, LCD TV of the present invention comprises power panel 1, mainboard 2 ' and display floater 3.Power panel 1 is provided with a power supply unit, this power supply unit comprises Electromagnetic interference filter 11, bridge rectifier 12, merit because of corrector 13, main power source transducer 14, standby power transducer 15 and power switch 16.Mainboard 2 ' is provided with MCU 21, remote control circuit 22, image interface circuit 23, image processor 24 and optical sensor 25, and compared with the mainboard 2 shown in Fig. 1, the optical sensor 25 of mainboard 2 ' of the present invention changes is powered by standby power Vsb.Display floater 3 is provided with time schedule controller 31, liquid crystal display screen 32, backlight drive circuit 33 and backlight module 34.Electric property coupling relation between each assembly indicates supply coupling relation and power supply direction of transfer thereof to be with the solid line of arrow, and signal or data couple relation and signal thereof or data transmission direction to be with the dotted line of arrow to indicate.
Please simultaneously see Fig. 3 and Fig. 4, in step S21, after AC power input, AC power suppresses conducting noise through Electromagnetic interference filter 11, again after bridge rectifier 12 rectification, directly through merit because corrector 13 is input to standby power transducer 15, standby power Vsb and internal electric source Vcc is converted to by standby power transducer 15, now internal electric source Vcc cannot send out to power to merit because of the controller in corrector 13 and main power source transducer 14 through power switch 16, therefore main power source transducer 14 can not export first and second main power source Vm1 and Vm2, LCD TV is in standby mode and shows without picture.When LCD TV is in standby mode, in step S22, power supply unit only exports standby power Vsb and powers to MCU 21, remote control circuit 22 and optical sensor 25, optical sensor 25 can be detected surround lighting and detecting result is sent to MCU 21, judge whether the brightness pace of change of surround lighting has more than a default value in step S23, MCU 21 according to detecting result.If judging to have exceedes this default value, the light that the user that then to express possibility covers part optical sensor 25 near LCD TV can receive originally or have user to open or the fluorescent lamp that closes in room, LCD TV place or have user that the fluorescent lamp in room is lightened or dimmed, and these to be users have very large chance namely will use the sign of LCD TV, therefore MCU 21 controls LCD TV and enters pre-power on mode.Otherwise do not exceed this default value if judge, then represent current LCD TV completely not by the sign used, therefore LCD TV keeps standby mode.
When LCD TV is in pre-power on mode, in step S24, MCU 21 out-put supply enabling signal PS_ON, also export control signal for controlling image processor 24 and do not output signal and the duty ratio controlling backlight drive circuit 33 being zero simultaneously, wherein, internal electric source Vcc sends out to power to merit because of the controller in corrector 13 and main power source transducer 14 by power supply starting signal PS_ON by control power switch 16, therefore in step S25, main power source transducer 14 starts to export first and second main power source Vm1 and Vm2 and powers to other all component.It should be noted that, although the first main power source Vm1 that power supply unit exports powers to image interface circuit 23, image processor 24, time schedule controller 31 and liquid crystal display screen 32, image interface circuit 23 is made to start to receive the inputs such as the video provided as wireless or cable television program or video player, the input video that image processor 24 starts image interface circuit 23 receives carries out demodulation, still but be subject to the control of MCU 21 and do not output signal after the process such as decoding or convergent-divergent, therefore time schedule controller 31 and liquid crystal display screen 32 do not start deal with data and display frame, therefore do not have too many power consumption.In addition, although the second main power source Vm2 that power supply unit exports provides the input power as backlight drive circuit 33, but be but subject to the control of MCU 21 and duty ratio is zero, therefore backlight drive circuit 33 does not start to carry out conversion and powers to backlight module 34 to export high voltage source, therefore does not have too many power consumption.So LCD TV is in pre-power on mode can't increase too many power consumption.
When LCD TV is in pre-power on mode, power supply unit still can export standby power Vsb and power to MCU 21, remote control circuit 22 and optical sensor 25, wherein, remote control circuit 22 can receive user at any time and presses external command that the button on remote controller sends and this external command is sent to MCU 21, in step S26, judge by MCU 21 external command whether this external command starts shooting.Be not the external command of start if judge, then MCU 21 is considered as invalid external command, and LCD TV keeps pre-power on mode.Be the external command of start if judge, then control LCD TV is entered normal mode of operation by MCU 21.
When LCD TV is in normal mode of operation, in step S27, MCU 21 controls image processor 24 and starts output signal, makes time schedule controller 31 start the data after receiving image processor 24 process and goes forward side by side row relax to control the picture that liquid crystal display screen 32 shows correspondence.Then, in step S28, the duty ratio that MCU 21 controls backlight drive circuit 33 is again non-vanishing, backlight drive circuit 33 is made to start the second main power source Vm2 to be converted to high voltage source with power supply to backlight module 34, backlight module 34 starts to provide backlight, makes user be seen the picture that liquid crystal display screen 32 shows.
When LCD TV is in normal mode of operation, power supply unit still can export standby power Vsb and power to MCU 21, remote control circuit 22 and optical sensor 25, remote control circuit 22 continues to receive user and presses external command that the button on remote controller sends and this external command is sent to MCU 21, in step S29, judge by MCU 21 external command whether this external command shuts down.Be not the external command of shutdown if judge, then MCU 21 carries out corresponding control action according to this external command, and LCD TV keeps normal mode of operation and has picture to show.Be the external command of shutdown if judge, then control LCD TV is got back to step S22 and is entered standby mode by MCU 21.In addition, when LCD TV is in normal mode of operation, optical sensor 25 can be detected surround lighting and detecting result is sent to MCU 21, MCU 21 environmentally luminous intensity judgement is at dim environment or brighter environment, if at dim environment, controlling back light drive circuit 33 adjusts backlight module 34 and provides and may produce dazzling sense of discomfort compared with the backlight of low-light level to reduce when user watches, if at brighter environment, controlling back light drive circuit 33 adjusts backlight module 34 provides the backlight of higher brightness to show with the detail content of improving picture.
As shown in Figure 4, LCD TV of the present invention utilizes the detecting result of optical sensor 25 pairs of surround lightings to judge in stand-by mode, and whether the brightness pace of change of surround lighting has exceedes default value, if have, represent that LCD TV has by the sign used, therefore LCD TV enters pre-power on mode look-ahead power supply unit and exports first and second main power source Vm1 and Vm2, make image interface circuit 23 and image processor 24 start to receive input video to go forward side by side row relax but do not output signal, and backlight drive circuit 33 starts to receive input power but does not change output, therefore do not have too many power consumption, but can entering normal mode of operation demonstrates picture at once when receiving the external command of start of user's input.So, LCD TV of the present invention after receiving user's power knob pressed on remote controller and sending the external command of start to the available machine time demonstrated needed for picture, namely the time needed for S27 to the S28 of step shown in Fig. 4, only need cost less than time of 1 second, user can be allowed to feel, and the available machine time is quite short and leave fabulous use sensation.
Fig. 5 is the fast starting method flow chart of LCD TV according to another embodiment of the present invention.Refer to Fig. 5, compared with the fast starting method shown in Fig. 4, fast starting method shown in Fig. 5 is also included in LCD TV when being in pre-power on mode, MCU 21 starts timing, and in step S31, judge whether remote control circuit 22 in the given time has to receive user and press the external command that the button on remote controller sends, namely whether timing exceedes the scheduled time does not all receive external command.If timing exceedes the scheduled time and all do not receive external command, then MCU 21 controls LCD TV and gets back to step S22 and enter standby mode with energy saving.If timing also in the given time, then MCU 21 continues to judge whether remote control circuit 22 receives external command, and in step S26, judges its external command of whether starting shooting when remote control circuit 22 receives external command.Be not the external command of start if judge, then MCU 21 is considered as invalid external command, and LCD TV keeps pre-power on mode.Be the external command of start if judge, then control LCD TV is entered normal mode of operation by MCU 21.
Although the present invention discloses as above with preferred embodiment; so itself and be not used to limit the present invention, anyly have the knack of this those skilled in the art, without departing from the spirit and scope of the present invention; when doing a little change and retouching, therefore protection scope of the present invention is when being as the criterion depending on those as defined in claim.
Claims (5)
1. a fast starting method for LCD TV, this LCD TV comprises a power supply unit, a microcontroller, an optical sensor, an image processor and a display floater, and the fast starting method of this LCD TV comprises:
When this LCD TV is in a standby mode, this power supply unit exports a standby power and powers to this microcontroller and this optical sensor;
When the brightness pace of change that this optical sensor detects a surround lighting is more than a default value, this LCD TV of this microprocessor controls enters a pre-power on mode;
When this LCD TV is in this pre-power on mode, this power supply unit of this microprocessor controls exports one first main power source and powers to this image processor, and export one second main power source as the input power of a backlight drive circuit of this display floater, and this image processor of this microprocessor controls does not output signal and the duty ratio controlling this backlight drive circuit is zero; And
When this LCD TV is in this pre-power on mode and this microcontroller detects the external command input of a start, this LCD TV of this microprocessor controls enters a normal mode of operation.
2. the fast starting method of LCD TV as claimed in claim 1, the fast starting method of wherein said LCD TV also comprises: when this LCD TV is in this standby mode, this standby power that this power supply unit exports also is powered to a remote control circuit of this LCD TV or key circuit, and the input of the external command of this start detected by this microcontroller by this remote control circuit or key circuit.
3. the fast starting method of LCD TV as claimed in claim 1, the fast starting method of wherein said LCD TV also comprises: when this LCD TV is in this pre-power on mode, this first main power source that this power supply unit of this microprocessor controls exports also is powered to the time schedule controller of this display floater, and this microcontroller also controls this time schedule controller does not output signal.
4. the fast starting method of LCD TV as claimed in claim 1, the fast starting method of wherein said LCD TV also comprises: when this LCD TV is in this pre-power on mode, when this microcontroller started timing and do not detect the external command input of this start within a scheduled time, this LCD TV of this microprocessor controls gets back to this standby mode.
5. the fast starting method of LCD TV as claimed in claim 1, the fast starting method of wherein said LCD TV also comprises: when this LCD TV is in this normal mode of operation, and this duty ratio controlling this backlight drive circuit after this image processor of this microprocessor controls output signal is again non-vanishing to make this backlight module provide backlight.
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| CN201310271311.7A CN104284115A (en) | 2013-07-01 | 2013-07-01 | Quick starting method for liquid crystal television |
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| CN201310271311.7A CN104284115A (en) | 2013-07-01 | 2013-07-01 | Quick starting method for liquid crystal television |
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Cited By (6)
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| CN106998501A (en) * | 2017-03-14 | 2017-08-01 | 深圳Tcl数字技术有限公司 | TV set control method and device |
| CN108196887A (en) * | 2017-12-27 | 2018-06-22 | 深圳Tcl新技术有限公司 | Fast starting method, device and computer readable storage medium |
| CN108495175A (en) * | 2018-03-12 | 2018-09-04 | 青岛海信电器股份有限公司 | A kind of method and apparatus for controlling communication message when smart television interconnection external equipment |
| CN108737869A (en) * | 2018-05-08 | 2018-11-02 | 康佳集团股份有限公司 | Smart television starting processing method based on human body sensing and intelligent television system |
| CN109377952A (en) * | 2018-11-12 | 2019-02-22 | 惠科股份有限公司 | A kind of driving method of display device, display device and display |
| CN111158449A (en) * | 2019-12-26 | 2020-05-15 | Oppo广东移动通信有限公司 | Terminal device, control system and control method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109377952A (en) * | 2018-11-12 | 2019-02-22 | 惠科股份有限公司 | A kind of driving method of display device, display device and display |
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| CN111158449A (en) * | 2019-12-26 | 2020-05-15 | Oppo广东移动通信有限公司 | Terminal device, control system and control method thereof |
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Application publication date: 20150114 |