CN102254517A - Display device capable of preventing resonance interference and operation method thereof - Google Patents
Display device capable of preventing resonance interference and operation method thereof Download PDFInfo
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- CN102254517A CN102254517A CN2010101793229A CN201010179322A CN102254517A CN 102254517 A CN102254517 A CN 102254517A CN 2010101793229 A CN2010101793229 A CN 2010101793229A CN 201010179322 A CN201010179322 A CN 201010179322A CN 102254517 A CN102254517 A CN 102254517A
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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
- Y02B20/00—Energy efficient lighting technologies, e.g. halogen lamps or gas discharge lamps
- Y02B20/40—Control techniques providing energy savings, e.g. smart controller or presence detection
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Abstract
The invention relates to a display device capable of preventing resonance interference. The display device is used for displaying an image, and comprises an internal light source, a light source regulation and control module and a system module, wherein the system module responds to a vertical synchronous signal with a first frequency to output an interrupting pluse with a second frequency, and comprises a processor which operates the first frequency to generate the second frequency which is not integral times the value of the first frequency. The light source regulation and control module responds to the interrupting pluse to output a drive pluse with the second frequency, the internal light source receives the drive pluse with the second frequency, and the display device utilizes the interrupting pluse to prevent the drive pluse from interfering in the image. The invention also provides an operation method of the display device capable of preventing resonance interference.
Description
Technical field
The invention relates to display device and method of operating thereof, particularly a kind of display device and method of operating thereof that prevents that image is disturbed.
Background technology
In recent years because compact, the low power consumption of flat-panel screens, low radiation, therefore replace traditional cathode-ray tube (CRT) (Cathode Ray Tube gradually, CRT) display, especially at membrane transistor LCD Technology (Thin Film Transistor Liquid Crystal Display, TFT-LCD) the quickest in the development, it is applied in undersized mobile phone widely to large-sized LCD TV.
The primary structure of flat-panel screens is divided into panel and backlight module (Back Lighting SourceModule), this panel comprises electro-conductive glass, liquid crystal, alignment film, colored filter, polaroid, reach elements such as driving governor, and this backlight module is in order to illuminate the image of this panel, this backlight module comprises cold cathode luminous source (Cold Cathode Fluorescent Lamps, CCFL), light emitting diode (Light EmittingDiode, LED), light guide plate, light source regulation and control module (Inverter), elements such as optical thin film miscellaneous, this light source regulation and control module then is the power supply of supply backlight module, drives this cold cathode luminous source (CCFL) with this light source regulation and control pulse that module was produced.This light source regulation and control module transfers electric current to interchange from direct current, and promotes the voltage of this pulse, to drive this cold cathode luminous source.
The mode of this this cold cathode luminous source of light source regulation and control module drive has two kinds traditionally, and is a kind of for continuation drives ignition mode (Continue Mode), and another kind is the intermittent ignition mode (Burst Mode) that drives.This continuity drives ignition mode and drives this cold cathode luminous source for this light source regulation and control module with a continuous impulse, should intermittence driving ignition mode then drive this cold cathode luminous source for this light source regulation and control module with an interrupting pulse.See also Fig. 1 (a), it is the oscillogram of this continuous impulse.The shortcoming that this continuation drives ignition mode is, when the amplitude A pt of this continuous impulse 101 is too low, this cold cathode luminous source can can't be driven, to such an extent as to the minimum briliancy of this panel is subjected to the restriction of the amplitude of this pulse, should intermittence driving ignition mode then there be this shortcoming.
See also Fig. 1 (b), it is the oscillogram of this interrupting pulse.See also Fig. 1 (c), it is the circuit diagram of light source regulation and control module in the prior art.This light source regulation and control module 3 comprises: multiple light courcess 34, a power circuit 30, a control module 31, a voltage transformation unit 32 and a feedback unit 33.In this example, multiple light courcess 34 is represented with two tubes.When this intermittence drove ignition mode, the wide length d of the ripple of control signal 201 was the luminous period of fluorescent tube under minimum brightness, and after interruption period D deducts luminous period d, was and ends the luminous period.So regulation and control lamp luminescence period d and the length ratio of ending the luminous period just are enough to reduce observer's naked eyes and assert the darkest degree of LCD, enlarge the brightest and the light and shade ratio gap of dark situation.When actual measurement, this brightness value is at 250cd/m
2To 50cd/m
2Between, and when this continuation drove ignition mode, this brightness value was then at 250cd/m
2To 180cd/m
2Between, the light and shade contrast of this picture obviously is preferable when this intermittence drives ignition mode.
Yet should intermittence driving ignition mode be not without at least one drawback, when the frequency of this interrupting pulse was the integral multiple of vertical synchronization sweep frequency, this interrupting pulse can disturb the image of this panel, made this image produce the ripples line.In view of this, a kind of device and method of operating thereof of adjusting the frequency of this interrupting pulse is suggested, to overcome the defective of prior art.
Summary of the invention
The object of the present invention is to provide a kind of device and its method of operating of frequency of adjustment one interrupting pulse, make it not be the integral multiple of vertical synchronization sweep frequency, disturbed in order to prevent image.
According to above-mentioned purpose of the present invention, a kind of display device with anti-resonance interference is suggested, and it is in order to show an image, and this display device with anti-resonance interference comprises an internal light source, a system module, light source regulation and control module.This internal light source is backlight as the display device that should prevent the resonance interference, to show this image.This system module response one has the vertical synchronizing signal of a first frequency and exports an interrupting pulse with a second frequency.This system module comprises a reading scan frequency circuit for detecting, a processor.This reading scan frequency circuit for detecting is in order to detect this first frequency of this vertical synchronizing signal.This processor comprises a storage element, a performance element.This first frequency of this this vertical synchronizing signal of storage unit stores.This performance element comprises an ALU, and this performance element utilizes this this first frequency of ALU computing to produce this second frequency, and wherein this second frequency is not the integral multiple of this first frequency.This this interrupting pulse of light source regulation and control module responds, give this internal light source and export a driving pulse, in order to control the keying of this internal light source, the frequency of this driving pulse equals this second frequency, and wherein this display device utilizes this interrupting pulse to prevent that this driving pulse from disturbing this image.
According to above-mentioned purpose of the present invention, a kind of method of operating with display device of anti-resonance interference is suggested, and this display device comprises an internal light source, and this method comprises the following step: (a) detecting one first frequency.(b) response one has the vertical synchronizing signal of this first frequency and exports an interrupting pulse with a second frequency, and wherein this second frequency is not the integral multiple of this first frequency.(c) respond this interrupting pulse, give this internal light source and export a driving pulse, in order to control the keying of this internal light source.
Display device and its method of operating by above anti-resonance interference, can reach and prevent that the vertical synchronization sweep frequency is disturbed and avoid image to produce the effect of ripples line, other feature and effect just can further be understood behind the embodiment of literary composition after can consulting.
Description of drawings
Fig. 1 (a) is the oscillogram that continuation drives the continuous impulse of ignition mode in the prior art;
Fig. 1 (b) is the oscillogram of the interrupting pulse of prior art discontinuous driving ignition mode;
Fig. 1 (c) is the circuit diagram of the light source regulation and control module of prior art in the prior art;
Fig. 2 is the synoptic diagram that has the display device of anti-resonance interference among the present invention;
Fig. 3 (a) is the oscillogram of vertical synchronizing signal among the present invention;
Fig. 3 (b) is the synoptic diagram of the frequency spectrum of vertical synchronizing signal among the present invention and interrupting pulse;
Fig. 3 (c) changes into the synoptic diagram of driving pulse for interrupting pulse among the present invention;
Fig. 4 is the operational flowchart that has the display device of anti-resonance interference among the present invention.
Embodiment
See also Fig. 2, it is the synoptic diagram with display device of anti-resonance interference.This display device 4 with anti-resonance interference is in order to show an image 4200.This display device 4 with anti-resonance interference comprises a system module 40, light source regulation and control module 41, a flat-panel screens 42.This flat-panel screens 42 comprises a liquid crystal panel 420 and an internal light source 421, and this image 4200 is shown in this liquid crystal panel 420.This system module 40 comprises a reading scan frequency circuit for detecting 401 and a processor 402.This processor 402 comprises a storage element 4020 and a performance element 4021.This performance element 4021 comprises an arithmetic logical unit 40210.
See also Fig. 3 (a), it is the oscillogram of vertical synchronizing signal.Please contrast Fig. 2 simultaneously, this system module 40 receives a signal of video signal 43, the kind of this signal of video signal is high-definition multimedia interface (High-Definition Multimedia Interface, HDMI) signal, digital television (DigitalTelevision, DTV) signal, TV (Television, TV) signal, Video Graphics Array (VideoGraphics Array, VGA), composite video (AV), aberration video (YPbPr) and European Wireless electricity and TV signal (SCART) one of them.This signal of video signal 43 comprises a vertical synchronizing signal 430, this reading scan frequency circuit for detecting 401 these vertical synchronizing signals 430 of detecting and produce the numerical value of this first frequency f1, detected back one processor 402 and received this first frequency f1, produced a second frequency f2 to calculate this first frequency f1.This has 40 responses of this system module the vertical synchronizing signal 430 of a first frequency f1 and exports an interrupting pulse 44 with this second frequency f2.This system module 40 exports this vertical synchronizing signal 430 to this liquid crystal panel 420 simultaneously, in order to show this image 4200.This storage element 4020 stores this first frequency f1, and this performance element 4021 utilizes this this first frequency of ALU 40210 computings f1 to produce this second frequency f2, and wherein this second frequency f2 is not the integral multiple of this first frequency f1.
See also Fig. 3 (b), it is the synoptic diagram of the frequency spectrum of vertical synchronizing signal and this interrupting pulse.Transverse axis is represented frequency, and the longitudinal axis is represented amplitude.This vertical synchronizing signal 430 can obtain a frequency multiplication frequency band 431 of this vertical synchronizing signal, two frequency multiplication frequency bands 432 of this vertical synchronizing signal, a frequency multiplication frequency band 440 of this interrupting pulse, two frequency multiplication frequency bands 441 of this interrupting pulse after changing through the Fu Li leaf with this interrupting pulse 44.Because this second frequency f2 is not the integral multiple of this first frequency f1, so a frequency multiplication frequency band 440 of this interrupting pulse 44 can not drop within the frequency multiplication frequency band 431 of this vertical synchronizing signal 430, two frequency multiplication frequency bands 441 of this interrupting pulse 44 can not drop within the two frequency multiplication frequency bands 432 of this vertical synchronizing signal 430, in like manner, the above frequency band of two frequencys multiplication of this interrupting pulse 44 also can not drop within the above frequency band of two frequencys multiplication of this vertical synchronizing signal 430, and on behalf of this interrupting pulse 43 with this second frequency f2, this can not interfere with the vertical synchronizing signal 44 that this has this first frequency f1.
See also Fig. 3 (c), it changes into the synoptic diagram of driving pulse for interrupting pulse.Please contrast Fig. 2 simultaneously, this light source regulation and control module 41 drives with intermittence lights mode operating, these light source regulation and control module 41 these interrupting pulses 44 of response, give this internal light source 421 and export a driving pulse 45, in order to control the keying of this internal light source 421, the frequency of this driving pulse 45 equals this second frequency f2, and wherein this display device 4 with anti-resonance interference utilizes this interrupting pulse 44 to prevent that this driving pulse 45 from disturbing these images 4200.When driving this internal light source 421, the size of the rms voltage of this driving pulse 45 is by the size decision of this liquid crystal face version 420, one embodiment is 15 cun a panel, then this rms voltage is 400V, big more then this rms voltage of size is big more, and this light source regulation and control module 41 is the module of a booster tension, and this booster tension module is used for producing this driving pulse 45 with this rms voltage.
This signal of video signal 43 outputs to this liquid crystal panel 420 via the processing of this system module 40 signal packet contains horizontal synchronizing signal (not shown), control signal (not shown), pixel information signal (not shown), this vertical synchronizing signal 430, wherein this vertical synchronizing signal 430 is relevant to this image and shows that a picture (AFrame) is the most important, therefore prevent that this vertical synchronizing signal 430 is interfered, just can prevent effectively that this image from producing the ripples line because of interference.This liquid crystal panel 420 of this flat-panel screens 42 receives this vertical synchronizing signal 430, shows this image 4200 to drive this panel 420.This internal light source 421 of this flat-panel screens 42 receives this driving pulse 45, to illuminate this liquid crystal panel 420, glow frequency when this internal light source 421 is lighted equals this second frequency f2 of this driving pulse 45, and this driving pulse 45 can not interfere with this image 4200.
Below be embodiments of the invention.Please contrast Fig. 2 simultaneously, in one first embodiment, 40 responses one of this system module have the vertical synchronizing signal 43 of frequency 60Hz and export this interrupting pulse 44 with frequency 270Hz.In one second embodiment, 40 responses one of this system module have the vertical synchronizing signal 43 of frequency 70Hz and export this interrupting pulse 44 with frequency 245Hz.In one the 3rd embodiment, 40 responses one of this system module have the vertical synchronizing signal 43 of frequency 75Hz and export this interrupting pulse 44 with frequency 262Hz.Among the above embodiment, this internal light source 421 is at least one fluorescent tube, and this display device 4 with anti-resonance interference can be a LCD or a rear projection display apparatus or a projection arrangement.
See also Fig. 4, it has the operational flowchart of the display device of anti-resonance interference for this.In step 501, this reading scan frequency circuit for detecting 401 detects this first frequency f1 of this vertical synchronizing signal 430, the output of bypass simultaneously (bypass) this signal of video signal 43.In step 502, this liquid crystal panel 420 receives this and has the vertical synchronizing signal 430 of this first frequency f1, driving this liquid crystal panel 420, yet will show that this image 4200 also needs this internal light source 421 to illuminate this liquid crystal panel 420.On the other hand, when this reading scan frequency circuit for detecting 401 detected this first frequency f1 of this vertical synchronizing signal 430, this processor 402 produced a plurality of integers, for example two adjacent positive integers.In step 503, this has the vertical synchronizing signal 430 of this first frequency f1 these processor 402 responses.In step 504, this arithmetic logical unit 40210 is according to algorithm computing this a first frequency f1 and an a plurality of integer, and these a plurality of integers are preferably two adjacent integers, for example 2 and 3 two integers.This processor 402 produces two different frequencies and does computing from this first frequency f1, and obtains not being this second frequency f2 of this first frequency f1 integral multiple.For example: this processor 402 multiply by 2 and produce a frequency f 11 with this first frequency f1, simultaneously this first frequency f1 be multiply by 3 and produce a frequency f 12, again with after frequency f 11 and frequency f 12 additions divided by 2, can obtain this second frequency f2, and this second frequency is not the integral multiple of this first frequency f1, then this system module 40 adjust these interrupting pulses frequency from this first frequency f1 to this second frequency f2.Suppose that this first frequency f1 is 60Hz, frequency f 11=60*2=120Hz then, frequency f 12=60*3=180Hz, (f11+f12)/and 2=150Hz=f2, this second frequency f2=150Hz is not the integral multiple of this first frequency f1=60Hz.In step 505, this has this interrupting pulse 44 of this second frequency f2 these system module 40 outputs.In step 506, this light source regulation and control module 41 responds these interrupting pulses 44 and exports this driving pulse 45 and give this internal light source 421, this moment, the frequency of this driving pulse 45 was to decide with this interrupting pulse 44, and this driving pulse 45 can be regarded this interrupting pulse 44 that is raised voltage as, the frequency that is to say this driving pulse 45 is this second frequency f2, when therefore this driving pulse 45 is lighted this internal light source 421, can not interfere with this image, particularly receive these signal of video signal 43 formed these images 4200 by liquid crystal panel 420.
By embodiments of the present invention as can be known the present invention can do instant automatic correction with the change of this first frequency f1 by this second frequency f2, do not need to change or adjust the element of hardware circuit or the numerical value of this hardware element.
Explanation of the present invention and embodiment are exposed in, and so it non-ly is used for limiting the present invention, all known this skill persons, and under spirit that does not break away from this present invention and scope, when doing various changes and modification, it must belong within the covering scope of patent of the present invention.
Claims (11)
1. one kind has the display device that anti-resonance disturbs, and it is in order to show an image, and this display device with anti-resonance interference comprises:
One system module responds a first frequency and exports a second frequency, and wherein this second frequency is not the integral multiple of this first frequency.
2. the display device with anti-resonance interference module according to claim 1, wherein:
This first frequency is the frequency that a vertical synchronizing signal has, and this second frequency is the frequency that an interrupting pulse has;
This system module comprises:
One reading scan frequency circuit for detecting, it is in order to detect this first frequency of this vertical synchronizing signal; And
One processor comprises:
One storage element stores this first frequency of this vertical synchronizing signal; And
One performance element comprises an ALU, and this performance element utilizes this this first frequency of ALU computing to produce this second frequency, and wherein this display device utilizes this interrupting pulse to prevent that this driving pulse from disturbing this image; And
This display device also comprises:
One internal light source, the display device of disturbing as this anti-resonance backlight is to show this image;
One light source regulation and control module responds this interrupting pulse, gives this internal light source and export a driving pulse, and in order to control the keying of this internal light source, wherein the frequency of this driving pulse equals this second frequency,
This light source regulation and control module drives with intermittence lights mode operating.
3. the display device with anti-resonance interference according to claim 2, wherein this display device is a liquid crystal indicator, a rear projection display apparatus or a projection arrangement, and this internal light source is a fluorescent tube.
4. system module that anti-resonance disturbs, in order to show an image, this system module responds a first frequency and exports a second frequency, and wherein this second frequency is not the integral multiple of this first frequency.
5. the system module that anti-resonance according to claim 4 disturbs, wherein:
This first frequency is the frequency that a vertical synchronizing signal has, and this second frequency is the frequency that an interrupting pulse has; And
This system module comprises:
One reading scan frequency circuit for detecting, it is in order to detect this first frequency of this vertical synchronizing signal; And
One processor comprises:
One storage element stores this first frequency of this vertical synchronizing signal; And
One performance element comprises an ALU, and this performance element utilizes this this first frequency of ALU computing to produce this second frequency, and wherein this system module utilizes this interrupting pulse with this second frequency to prevent that this image is disturbed.
6. the system module that anti-resonance according to claim 5 disturbs, wherein:
When this first frequency was 60 hertz, this system module responded this vertical synchronizing signal, and output to have this second frequency be this interrupting pulse of 270 hertz;
When this first frequency was 70 hertz, this system module responded this vertical synchronizing signal, and output to have this second frequency be this interrupting pulse of 245 hertz; And
When this first frequency was 75 hertz, this system module responded this vertical synchronizing signal, and output to have this second frequency be this interrupting pulse of 262 hertz.
7. method of operating with display device that anti-resonance disturbs, this has display device that anti-resonance disturbs and comprises:
One internal light source, the display device of disturbing as this anti-resonance backlight is to show this image;
One system module, response one has the vertical synchronizing signal of a first frequency and exports an interrupting pulse with a second frequency, and this system module comprises:
One reading scan frequency circuit for detecting, it is in order to detect this first frequency of this vertical synchronizing signal; And
One processor comprises:
One storage element stores this first frequency of this vertical synchronizing signal; And
One performance element comprises an arithmetic logical unit; And
One light source regulation and control module, respond this interrupting pulse, give this internal light source and export a driving pulse, in order to control the keying of this internal light source, the frequency of this driving pulse equals this second frequency, and this method of operating with display device of anti-resonance interference comprises the following step:
This reading scan frequency circuit for detecting is detected this first frequency;
One liquid crystal panel receives this vertical synchronizing signal with this first frequency;
This system module responds this to have the vertical synchronizing signal of this first frequency and exports the interrupting pulse that this has this second frequency, and wherein this second frequency is not the integral multiple of this first frequency; And
This this interrupting pulse of light source regulation and control module responds is given this internal light source and export this driving pulse, to control the keying of this internal light source.
8. method according to claim 7, wherein:
When this first frequency was 60 hertz, this system module responded this vertical synchronizing signal, was this interrupting pulse of 270 hertz and export this second frequency;
When this first frequency was 70 hertz, this system module responded this vertical synchronizing signal, and output to have this second frequency be this interrupting pulse of 245 hertz; And
When this first frequency was 75 hertz, this system module responded this vertical synchronizing signal, and output to have this second frequency be this interrupting pulse of 262 hertz.
9. method according to claim 7 more comprises the following step:
This system module is controlled the opening and closing time of this interrupting pulse, to adjust the brightness of this internal light source.
10. method of operating with display device that anti-resonance disturbs, this display device comprises an internal light source, and this method comprises the following step:
Detect a first frequency;
Receive one and have the vertical synchronizing signal of this first frequency;
Response one has the vertical synchronizing signal of this first frequency, this first frequency of computing and export an interrupting pulse with a second frequency, and wherein this second frequency is not the integral multiple of this first frequency;
Respond this interrupting pulse, give this internal light source and export a driving pulse, to control the keying of this internal light source.
11. method according to claim 10, wherein:
When this first frequency is 60 hertz, respond this vertical synchronizing signal, be this interrupting pulse of 270 hertz and export this second frequency;
When this first frequency is 70 hertz, respond this vertical synchronizing signal, and output to have this second frequency be this interrupting pulse of 245 hertz; And
When this first frequency is 75 hertz, respond this vertical synchronizing signal, and output to have this second frequency be this interrupting pulse of 262 hertz.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010101793229A CN102254517A (en) | 2010-05-19 | 2010-05-19 | Display device capable of preventing resonance interference and operation method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010101793229A CN102254517A (en) | 2010-05-19 | 2010-05-19 | Display device capable of preventing resonance interference and operation method thereof |
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| CN102254517A true CN102254517A (en) | 2011-11-23 |
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| CN2010101793229A Pending CN102254517A (en) | 2010-05-19 | 2010-05-19 | Display device capable of preventing resonance interference and operation method thereof |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103218969A (en) * | 2013-03-12 | 2013-07-24 | 惠州雷曼光电科技有限公司 | Image displaying method, driving device and displaying system |
| CN110556079A (en) * | 2018-06-01 | 2019-12-10 | 宏碁股份有限公司 | Optical wireless communication system |
| CN112562597A (en) * | 2019-09-26 | 2021-03-26 | 瑞昱半导体股份有限公司 | Display control device and method with dynamic backlight adjustment mechanism |
| CN112599104A (en) * | 2019-10-01 | 2021-04-02 | 夏普株式会社 | Display control device, display device, recording medium, and control method |
| CN114485733A (en) * | 2022-04-19 | 2022-05-13 | 宜科(天津)电子有限公司 | Anti-interference method, equipment and medium for photoelectric sensor |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TW200630921A (en) * | 2005-02-24 | 2006-09-01 | Amtran Technology Co Ltd | Television and back lighting source module capable of preventing harmonic interference |
| TW200643872A (en) * | 2005-12-22 | 2006-12-16 | Au Optronics Corp | Method for reducing noise and liquid crystal display system and circuit thereof |
| CN101166386A (en) * | 2006-10-19 | 2008-04-23 | 索尼株式会社 | Light source device, light source driving device, light emission amount control device and liquid crystal display |
-
2010
- 2010-05-19 CN CN2010101793229A patent/CN102254517A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TW200630921A (en) * | 2005-02-24 | 2006-09-01 | Amtran Technology Co Ltd | Television and back lighting source module capable of preventing harmonic interference |
| TW200643872A (en) * | 2005-12-22 | 2006-12-16 | Au Optronics Corp | Method for reducing noise and liquid crystal display system and circuit thereof |
| CN101166386A (en) * | 2006-10-19 | 2008-04-23 | 索尼株式会社 | Light source device, light source driving device, light emission amount control device and liquid crystal display |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103218969A (en) * | 2013-03-12 | 2013-07-24 | 惠州雷曼光电科技有限公司 | Image displaying method, driving device and displaying system |
| CN110556079A (en) * | 2018-06-01 | 2019-12-10 | 宏碁股份有限公司 | Optical wireless communication system |
| CN110556079B (en) * | 2018-06-01 | 2021-06-22 | 宏碁股份有限公司 | Optical wireless communication system |
| CN112562597A (en) * | 2019-09-26 | 2021-03-26 | 瑞昱半导体股份有限公司 | Display control device and method with dynamic backlight adjustment mechanism |
| CN112562597B (en) * | 2019-09-26 | 2022-03-11 | 瑞昱半导体股份有限公司 | Display control device and method with dynamic backlight adjustment mechanism |
| CN112599104A (en) * | 2019-10-01 | 2021-04-02 | 夏普株式会社 | Display control device, display device, recording medium, and control method |
| CN114485733A (en) * | 2022-04-19 | 2022-05-13 | 宜科(天津)电子有限公司 | Anti-interference method, equipment and medium for photoelectric sensor |
| CN114485733B (en) * | 2022-04-19 | 2022-06-21 | 宜科(天津)电子有限公司 | Anti-interference method, equipment and medium for photoelectric sensor |
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Application publication date: 20111123 |