CN102499624B - Human eye flicker perception testing device and modulation signal processing method thereof - Google Patents
Human eye flicker perception testing device and modulation signal processing method thereof Download PDFInfo
- Publication number
- CN102499624B CN102499624B CN201110338575.0A CN201110338575A CN102499624B CN 102499624 B CN102499624 B CN 102499624B CN 201110338575 A CN201110338575 A CN 201110338575A CN 102499624 B CN102499624 B CN 102499624B
- Authority
- CN
- China
- Prior art keywords
- intervalometer
- human eye
- depositor
- numerical value
- human
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 230000008447 perception Effects 0.000 title claims abstract description 32
- 238000012360 testing method Methods 0.000 title claims abstract description 31
- 238000003672 processing method Methods 0.000 title claims abstract description 6
- 230000003993 interaction Effects 0.000 claims description 24
- 238000005096 rolling process Methods 0.000 claims description 10
- 238000000034 method Methods 0.000 claims description 9
- 239000000463 material Substances 0.000 claims description 5
- 239000003086 colorant Substances 0.000 abstract description 2
- 238000011160 research Methods 0.000 abstract description 2
- 230000010485 coping Effects 0.000 abstract 1
- 238000005259 measurement Methods 0.000 abstract 1
- 239000011521 glass Substances 0.000 description 4
- 230000008859 change Effects 0.000 description 3
- 230000006870 function Effects 0.000 description 3
- 230000004927 fusion Effects 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 230000023077 detection of light stimulus Effects 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 210000003298 dental enamel Anatomy 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 230000007935 neutral effect Effects 0.000 description 1
- 239000011022 opal Substances 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 238000005498 polishing Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000002310 reflectometry Methods 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 230000036962 time dependent Effects 0.000 description 1
Images
Abstract
The invention relates to a human eye flicker perception testing device and a modulation signal processing method thereof, which aim to overcome shortcomings that an existing human eye flicker perception testing device cannot perfectly used for coping with influencing factors, unscientific in measurement results, narrow in application range and the like. The human eye flicker perception testing device consists of a support, a base, a controller, full-color light emitting diodes and a constant-current driver. The controller is based on a microprocessor. The human eye flicker perception testing device can adjust main influence factors of human eye flicker perception, such as flicker frequency of a light source, brightness, colors, flicker modulation depth and target sizes, and accordingly human eye flicker perception test and research can be realized comprehensively and scientifically.
Description
Technical field
The invention belongs to the application of electronic technology field, what be specifically related to is a kind of human eye flicker perception test set.
Background technology
At present, the apparatus structure that is used for human eye flicker perception test both at home and abroad is simple, function singleness, and the stroboscope that most employing can only be regulated flicker frequency is used to measure the flicker fusion frequency threshold value of human eye as gauge.This class flicker perception tester has only been considered the influence of frequency for human eye flicker perception, and ignored the influence of brightness power to the flicker perception, ignored the difference of human eye to the sensitivity of different color light source, ignored of the influence of flicker modulation depth, ignored of the influence of object observing size the flicker perception to the flicker perception.This causes the test result of human eye flicker fusion frequency threshold value to be confined to can not represent the truth under the actual environment under particular environment and the situation.
Because the function singleness of existing human eye flicker perception tester, its application also has very big limitation.The three-dimensional stereo display technique growth momentum is swift and violent at present, the market prospect optimism, there is the puzzlement of flicker in the fast gate-type 3D Display Technique of a kind of active of glasses synchro switch, the 3D glasses glimmer with 60 hertz fixed frequency, human eye all may cause flickering by the displaying contents and the surround lighting of the display that glasses are seen, for the testing research of the flickering of this fixed frequency, existing test instrunment is just at one's wit's end.A kind of requirement comprises the novel human eye flickering of the major influence factors of human eye flicker perception such as adjustable flicker frequency, light-source brightness, color, flicker modulation depth, target sizes and know that test set arises at the historic moment in the contact call in epoch.
Summary of the invention
Technical problem:The invention provides a kind of by the human-computer interaction interface input control signal, can regulate the major influence factors of human eyes such as flicker frequency, brightness, color, flicker modulation depth and the light source target sizes flicker perception of light source, thus more comprehensive human eye flicker perception test set that scientifically carries out human eye flicker perception test.
Technical scheme:Human eye of the present invention flicker perception test set, comprise base, controller, be arranged at the base top light source, be arranged on the support on the base; Described susceptor surface is laid with not reflectorized material, and the base center is provided with the diffuse-reflectance disk, and light source is positioned at directly over the center of diffuse-reflectance disk and is fixedly installed on support one end; Described light source comprises full-color light-emitting diode and constant-flow driver, and the current input terminal of described full-color light-emitting diode is connected with the current output terminal of constant-flow driver; Described controller comprises microprocessor, human-computer interaction interface interface, drives signal output part, the signal input part of described microprocessor is connected with the driving signal output part with the human-computer interaction interface interface respectively with signal output part, and described driving signal output part is connected with the driving signal input of constant-flow driver by holding wire.
The present invention is input to microprocessor by the human-computer interaction interface interface of the control signal process controller of human-computer interaction interface input, the feedback information that produces behind microprocessor each channel modulation signal processing to full-color light-emitting diode is transferred to human-computer interaction interface by the human-computer interaction interface interface and shows, simultaneously treated each channel modulation signal that obtains is sent to constant-flow driver, three kinds of colors of red, green, blue luminous of control full-color light-emitting diode, light-illuminating is to the diffuse-reflectance disk, and human eye is observed disk by specific range and angle and come the perception flicker.
The modulation signal processing method that is applied to human eye flicker perception test set of the present invention is, each passage for full-color light-emitting diode, the control signal that comprises frequency, brightness, modulation depth information that microprocessor is imported human-computer interaction interface converts the assignment numerical value to the depositor of the depositor sum counter of intervalometer to, in the mode of period treatment modulation signal is handled continuously then, described period treatment may further comprise the steps:
1) original state of definition pulse width modulating signal;
2) whether the microprocessor judges intervalometer produces interruption, if having then enter step 3), if not intervalometer continue to judge whether to produce and interrupt;
3) interrupt type of judgement intervalometer, if the relatively interruption that the timing numerical value of intervalometer produces when equaling the depositor fiducial value of intervalometer, then the pulse width modulating signal state changes, and returns step 2 after finishing); If the timing numerical value of intervalometer when equaling the timing maximum, produce overflow interruption, then intervalometer timing numerical value zero clearing, rolling counters forward numerical value adds 1, the pulse width modulating signal state changes, and enters step 4) after finishing;
4) judge whether enumerator produces interruption, if having then enter step 5), if not would return step 2);
5) interrupt type of judgement enumerator is if the relatively interruption that the count value of enumerator produces when equaling the depositor fiducial value of enumerator then enters step 6); If the count value of enumerator when equaling maximum count value, produce overflow interruption, then rolling counters forward numerical value zero clearing enters step 6) then;
6) the depositor fiducial value of intervalometer assignment again, this cycle finishes, and enters following one-period.
Beneficial effect:The present invention is by the human-computer interaction interface input control signal, can regulate the major influence factors of human eyes such as flicker frequency, brightness, color, flicker modulation depth and the light source target sizes flicker perception of light source, thereby scientifically carry out human eye flicker perception test more comprehensively.The present invention conceives careful, design ingeniously, contained the principal element that influences human eye flicker perception, for the human eye flicker perception test of science more comprehensively provides condition, can be used for measuring the human eye flicker fusion frequency threshold value and the human eye testing fatigue that more meet under the truth, be widely used.Perplex for the flicker that initiatively fast gate-type 3D Display Technique exists, the present invention can be used to study under the characteristic frequency (60 hertz), factors such as light-source brightness reduce or eliminate the flicker puzzlement of initiatively fast gate-type 3D to the influence of human eye flicker perception by the method for suitably regulating display device and environmental light brightness according to test result.
Description of drawings
Fig. 1 is the structure principle chart of test set of the present invention;
Fig. 2 is a signal connection layout of the present invention;
Fig. 3 is control method overall structure figure of the present invention;
Fig. 4 is a modulation signal period treatment flow chart of the present invention;
Fig. 5 is a signal timing diagram.
Have among the figure: base 1, diffuse-reflectance disk 11, support 2, light source 3, full-color light-emitting diode 31, constant-flow driver 32, controller 4, microprocessor 41, human-computer interaction interface interface 42, drive signal output part 43, high-frequency carrier signal 6, low-frequency modulation signal 7, pulse width modulating signal 8.
The specific embodiment
A kind of human eye flicker perception test set of the present invention, comprise base 1, controller 4, be arranged at base 1 top light source 3, be arranged on the support 2 on the base 1; Described base 1 surface is laid with not reflectorized material, and base 1 center is provided with diffuse-reflectance disk 11, and light source 3 is positioned at directly over the center of diffuse-reflectance disk 11 and is fixedly installed on support 2 one ends; Described light source 3 comprises full-color light-emitting diode 31 and constant-flow driver 32, and the current input terminal of described full-color light-emitting diode 31 is connected with the current output terminal of constant-flow driver 32; Described controller 4 comprises microprocessor 41, human-computer interaction interface interface 42, drives signal output part 43, the signal input part of described microprocessor 41 is connected with driving signal output part 43 with human-computer interaction interface interface 42 respectively with signal output part, and described driving signal output part 43 is connected by the driving signal input of holding wire with constant-flow driver 32.
Below in conjunction with accompanying drawing, the present invention will be further described:
Apparatus of the present invention are by controller 4, light source 3 based on microprocessor 41, and support 2, base 1 are formed.Described microprocessor 41 need be selected the microprocessor that is provided with the intervalometer that possesses pulse width modulation function and three above autonomous channels are arranged for use.Described full-color light-emitting diode 31 adopts large-power light-emitting diodes, and power is more than or equal to 3 watts.Constant-flow driver 32 needs to select to satisfy the model that the control of triple channel independence pulse width modulating signal required and can provide full-color light-emitting diode 31 required constant currents.Fig. 1 is the structure principle chart of test set of the present invention, base 1 side is fixed with support 2, be used for light source 3 be fixed on base 1 directly over, be big or small selectable diffuse-reflectance disk under the full-color light-emitting diode of light source 3 (RGB-LED) 31, the center of circle of disk and full-color light-emitting diode 31 vertical over against.Not reflectorized material is laid on base 1 surface, as the black velvet.The diffuse-reflectance disk is for possessing the reflectivity height, and is neutral good, distance light not, and surfacing is even, the work blank of characteristics such as diffusive is good, it is good to satisfy optical stability simultaneously, wear-resisting, anti-exhibition, the requirement of being convenient to clean, common used material has glazed ceramic blank, polishing opal glass and iron-based enamel blank.The diffuse-reflectance disk is the object observing of human eye, is furnished with the different a plurality of diffuse-reflectance disks of size specification in the device, selects different big or small disks promptly to change the size of object observing.
Input signals such as the flicker frequency of full-color light-emitting diode among the present invention (RGB-LED), brightness, color, flicker modulation depth are input to controller based on microprocessor by human-computer interaction interface, the input signal via controller is handled the back and is produced the trichromatic variation of red, green, blue that triple channel pulse width modulation (PWM) control signal is independently controlled full-color light-emitting diode (RGB-LED), produces the test light that needs.Fig. 2 is the signal connection layout, control signal is input to microprocessor 41 by the human-computer interaction interface interface 42 of controller 4, the feedback information that 41 pairs of control signals of microprocessor are handled the back generation shows by 42 outputs of human-computer interaction interface interface, the simultaneously treated control signal that obtains through full-color light-emitting diode drive signal output part 43 minutes independently triple channel be sent to constant-flow driver 32 in the full-color light-emitting diode luminescent system 3 respectively, control the red of full-color light-emitting diode 31, green, blue three-color luminous, light-illuminating is to the diffuse-reflectance disk, and human eye is observed disk by specific range and angle and come the perception flicker.
The modulation signal that is applied to human eye flicker perception test set of the present invention is handled processing method and is, each passage for full-color light-emitting diode 31, microprocessor 41 is with the frequency that comprises of human-computer interaction interface input, brightness, the control signal of modulation depth information converts the assignment numerical value to the depositor of the depositor sum counter of intervalometer to, in the mode of period treatment each channel modulation signal of full-color light-emitting diode in the human eye flicker perception test set is handled continuously then, the constant-flow driver of the pulse width modulating signal control light source of output, and then it is luminous to drive full-color light-emitting diode.Described period treatment may further comprise the steps:
1) original state of definition pulse width modulating signal;
2) whether the microprocessor judges intervalometer produces interruption, if having then enter step 3), if not intervalometer continue to judge whether to produce and interrupt;
3) interrupt type of judgement intervalometer, if the relatively interruption that the timing numerical value of intervalometer produces when equaling the depositor fiducial value of intervalometer, then the pulse width modulating signal state changes, and returns step 2 after finishing); If the timing numerical value of intervalometer when equaling the timing maximum, produce overflow interruption, then intervalometer timing numerical value zero clearing, rolling counters forward numerical value adds 1, the pulse width modulating signal state changes, and enters step 4) after finishing;
4) judge whether enumerator produces interruption, if having then enter step 5), if not would return step 2);
5) interrupt type of judgement enumerator is if the relatively interruption that the count value of enumerator produces when equaling the depositor fiducial value of enumerator then enters step 6); If the count value of enumerator when equaling maximum count value, produce overflow interruption, then rolling counters forward numerical value zero clearing enters step 6) then;
6) the depositor fiducial value of intervalometer assignment again, this cycle finishes, and enters following one-period.
Control method of the present invention is shown in the control method overall structure figure of Fig. 3.Among the present invention, the depositor fiducial value of intervalometer is imported by human-computer interaction interface, between 0 and intervalometer timing numerical value maximum between, be used to be defined in the time scale of pulse width modulating signal two states in the intervalometer timing cycle.For the modulation depth of light source is set, the assignment numerical value of the depositor fiducial value of intervalometer has two selections.The depositor fiducial value of enumerator is imported by human-computer interaction interface, between 0 and the rolling counters forward maximum between, be used to define the time scale of using two assignment numerical value of depositor fiducial value of intervalometer in the rolling counters forward cycle.The described assignment again of step 6) is meant the depositor fiducial value assignment that selection another numerical value except that the assignment numerical value of the depositor fiducial value of the intervalometer that is using is given intervalometer.The maximum regularly numerical value of the depositor of intervalometer is intrasystem fixed value, does not need to import by human-computer interaction interface.The depositor maximum count numerical value of enumerator is imported by human-computer interaction interface, defines a count cycle, and the frequency of low-frequency modulation signal 7 is set.Since the depositor fiducial value of intervalometer between 0 and intervalometer timing numerical value maximum between, and intervalometer is according to the timing of positive number timing mode, so in an intervalometer timing cycle, microprocessor will experience at first that step 3) is described relatively interrupts, and then experiences that step 3) is described overflows interruption.Same because the depositor fiducial value of enumerator between 0 and the rolling counters forward maximum between, and enumerator is counted according to the positive number counting mode, so a rolling counters forward in the cycle, microprocessor will experience at first that step 5) is described relatively interrupts, and then experiences that step 5) is described overflows interruption.Pulse width modulating signal is a digital signal, be divided into high level 1 and low level 0 two states, described pulse width modulating signal is exported after intervalometer is started working and by step 1) original state is set, through step 2)-6) finish the change of state in the complete cycle, finally obtain time dependent pulse width modulating signal 8.
Two assignment numerical value that the depositor fiducial value of each passage intervalometer of red, green, blue are set by human-computer interaction interface interface input can be provided with the brightness and the modulation depth of each passage.Counter register fiducial value and peaked brightness and the frequency that to select each passage that be provided with of counting.Can change the color of light source to the difference setting of each passage brightness.
By signal processing shown in Figure 5, low-frequency modulation signal 7 can be loaded on the high-frequency carrier signal 6, and the final independent pulse width modulating signal 8 that produces full-color light-emitting diode (RGB-LED) red, green, blue obtains the test light that needs.Wherein the frequency of low-frequency modulation signal 7 can from below 1 hertz to hundreds of hertz, the frequency of high-frequency carrier signal 6 is more than several KHz.
Claims (2)
1. a human eye flicker perception test set is characterized in that this test set comprises base (1), controller (4), is arranged at the light source (3) of base (1) top, is arranged on the support (2) on the base (1);
Described base (1) surface is laid with not reflectorized material, and base (1) center is provided with diffuse-reflectance disk (11), and light source (3) is positioned at directly over the center of diffuse-reflectance disk (11) and is fixedly installed on support (2) one ends;
Described light source (3) comprises full-color light-emitting diode (31) and constant-flow driver (32), and the current input terminal of described full-color light-emitting diode (31) is connected with the current output terminal of constant-flow driver (32);
Described controller (4) comprises microprocessor (41), human-computer interaction interface interface (42), drives signal output part (43), the signal input part of described microprocessor (41) is connected with driving signal output part (43) with human-computer interaction interface interface (42) respectively with signal output part, and described driving signal output part (43) is connected by the driving signal input of holding wire with constant-flow driver (32).
2. modulation signal processing method that is applied to the described human eye of claim 1 flicker perception test set, it is characterized in that, in this method, each passage for full-color light-emitting diode (31), the control signal that comprises frequency, brightness, modulation depth information that microprocessor (41) is imported human-computer interaction interface converts the assignment numerical value to the depositor of the depositor sum counter of intervalometer to, in the mode of period treatment modulation signal is handled continuously then, described period treatment may further comprise the steps:
1) original state of definition pulse width modulating signal;
2) whether the microprocessor judges intervalometer produces interruption, if having then enter step 3), if not intervalometer continue to judge whether to produce and interrupt;
3) interrupt type of judgement intervalometer, if the relatively interruption that the timing numerical value of intervalometer produces when equaling the depositor fiducial value of intervalometer, then the pulse width modulating signal state changes, and returns step 2 after finishing); If the timing numerical value of intervalometer when equaling the timing maximum, produce overflow interruption, then intervalometer timing numerical value zero clearing, rolling counters forward numerical value adds 1, the pulse width modulating signal state changes, and enters step 4) after finishing;
4) judge whether enumerator produces interruption, if having then enter step 5), if not would return step 2);
5) interrupt type of judgement enumerator is if the relatively interruption that the count value of enumerator produces when equaling the depositor fiducial value of enumerator then enters step 6); If the count value of enumerator when equaling maximum count value, produce overflow interruption, then rolling counters forward numerical value zero clearing enters step 6) then;
6) the depositor fiducial value of intervalometer assignment again, this cycle finishes, and enters following one-period.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110338575.0A CN102499624B (en) | 2011-11-01 | 2011-11-01 | Human eye flicker perception testing device and modulation signal processing method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110338575.0A CN102499624B (en) | 2011-11-01 | 2011-11-01 | Human eye flicker perception testing device and modulation signal processing method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102499624A CN102499624A (en) | 2012-06-20 |
| CN102499624B true CN102499624B (en) | 2013-07-31 |
Family
ID=46211805
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110338575.0A Expired - Fee Related CN102499624B (en) | 2011-11-01 | 2011-11-01 | Human eye flicker perception testing device and modulation signal processing method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102499624B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103259668B (en) * | 2013-04-02 | 2016-07-06 | 中兴通讯股份有限公司 | Realize method and network chip that rolling counters forward controls |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009050399A (en) * | 2007-08-24 | 2009-03-12 | New Industry Research Organization | System and method for measuring spectral luminous efficiency |
| RU2350257C1 (en) * | 2007-09-21 | 2009-03-27 | Государственное образовательное учреждение высшего профессионального образования Марийский государственный технический университет | Method of determination of sight resolving power on frequency of light flickers |
| CN201412814Y (en) * | 2009-05-12 | 2010-02-24 | 雄鸡企业有限公司 | Wireless remote control light-emitting brick structure |
| CN101739976A (en) * | 2008-11-21 | 2010-06-16 | 比亚迪股份有限公司 | Flicker debugging device and method of liquid crystal display (LCD) |
| WO2011030622A1 (en) * | 2009-09-10 | 2011-03-17 | 独立行政法人産業技術総合研究所 | Measurement device and measurement method for flickering perception threshold |
| CN201968899U (en) * | 2010-12-31 | 2011-09-14 | 西安华亚电子有限责任公司 | Flashing vision enhancement instrument |
| CN202313269U (en) * | 2011-11-01 | 2012-07-11 | 东南大学 | Device for sensing and testing human eye blinking |
-
2011
- 2011-11-01 CN CN201110338575.0A patent/CN102499624B/en not_active Expired - Fee Related
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009050399A (en) * | 2007-08-24 | 2009-03-12 | New Industry Research Organization | System and method for measuring spectral luminous efficiency |
| RU2350257C1 (en) * | 2007-09-21 | 2009-03-27 | Государственное образовательное учреждение высшего профессионального образования Марийский государственный технический университет | Method of determination of sight resolving power on frequency of light flickers |
| CN101739976A (en) * | 2008-11-21 | 2010-06-16 | 比亚迪股份有限公司 | Flicker debugging device and method of liquid crystal display (LCD) |
| CN201412814Y (en) * | 2009-05-12 | 2010-02-24 | 雄鸡企业有限公司 | Wireless remote control light-emitting brick structure |
| WO2011030622A1 (en) * | 2009-09-10 | 2011-03-17 | 独立行政法人産業技術総合研究所 | Measurement device and measurement method for flickering perception threshold |
| CN201968899U (en) * | 2010-12-31 | 2011-09-14 | 西安华亚电子有限责任公司 | Flashing vision enhancement instrument |
| CN202313269U (en) * | 2011-11-01 | 2012-07-11 | 东南大学 | Device for sensing and testing human eye blinking |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102499624A (en) | 2012-06-20 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN100456354C (en) | Light source device, light source system and method of improvement light source uniform luminescence | |
| CN109587870A (en) | Single-point controls lamp string circuit and its method | |
| CN103945604A (en) | Light adjusting method, light adjusting device, adjustable light source and display equipment | |
| CN105404165B (en) | A kind of control panel and control method | |
| CN101996585A (en) | RGB three primary colours LED backlight based automatic white balance adjustment system and method thereof | |
| WO2002090909A3 (en) | System for measuring chromaticity coordinates | |
| CN101755483A (en) | Light emitting unit arrangement and control system and method thereof | |
| CN101996587A (en) | Color LED backlight frequency-control dimming circuit and method | |
| CN105636304A (en) | Method, device and system for adjusting vehicle backlight brightness | |
| CN101184355B (en) | Method for synthesizing white light using three primary colors LED light source | |
| CN202313269U (en) | Device for sensing and testing human eye blinking | |
| CN100501953C (en) | Luminous diode color matching method | |
| US20090174331A1 (en) | Backlight device | |
| CN102499624B (en) | Human eye flicker perception testing device and modulation signal processing method thereof | |
| CN105929366A (en) | Plane position sensing method in indoor environment | |
| CN105430840A (en) | LED lighting controller based on gesture and automatic control and control method | |
| CN105101536A (en) | Intelligent lighting system and control method thereof | |
| CN105072735A (en) | Drive circuit for raising LED visual lighting effect | |
| CN106793262B (en) | The control method and LED information display system of discrete type PWM, multichannel PWM | |
| CN106594660A (en) | Sunlight-simulating illuminating system | |
| US20230052511A1 (en) | Control of dynamic brightness of light-emitting diode array | |
| CN104359866B (en) | A kind of retro-reflection measurement apparatus | |
| CN204155591U (en) | LED display Automatic white balance brightness regulating structure | |
| CN206422943U (en) | A kind of LED control devices | |
| CN109712561A (en) | A kind of LED screen display brightness adjustment device and its control method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: JIANGSU SOUTHEAST UNIVERSITY ASSETS MANAGEMENT CO. Free format text: FORMER OWNER: SOWTHEAST UNIV. Effective date: 20150325 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20150325 Address after: 210096 Jiangsu city Nanjing Province four pailou No. 2 Patentee after: Jiangsu Southeast University Asset Management Co.,Ltd. Address before: 210096 Jiangsu city Nanjing Province four pailou No. 2 Patentee before: Southeast University |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20160401 Address after: 210000, S205, building A5, special community of Zijin (Shimonoseki) technology venture, No. 199, East Road, Gulou East, Gulou District, Jiangsu, Nanjing Patentee after: NANJING DONGHUI PHOTOELECTRIC CO.,LTD. Address before: 210096 Jiangsu city Nanjing Province four pailou No. 2 Patentee before: Jiangsu Southeast University Asset Management Co.,Ltd. |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130731 Termination date: 20211101 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |