CN110858052A - Projector brightness adjusting system and brightness adjusting method - Google Patents
Projector brightness adjusting system and brightness adjusting method Download PDFInfo
- Publication number
- CN110858052A CN110858052A CN201810966404.4A CN201810966404A CN110858052A CN 110858052 A CN110858052 A CN 110858052A CN 201810966404 A CN201810966404 A CN 201810966404A CN 110858052 A CN110858052 A CN 110858052A
- Authority
- CN
- China
- Prior art keywords
- brightness
- main control
- module
- control module
- value
- 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.)
- Granted
Links
Images
Classifications
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B21/00—Projectors or projection-type viewers; Accessories therefor
- G03B21/14—Details
- G03B21/20—Lamp housings
- G03B21/2053—Intensity control of illuminating light
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B21/00—Projectors or projection-type viewers; Accessories therefor
- G03B21/14—Details
- G03B21/20—Lamp housings
Abstract
The projector brightness adjusting system comprises a light sensing module, a main control module and a brightness output module, wherein the light sensing module is used for sensing the brightness of ambient light, the main control module records the proportional relation between the acquisition value of the light sensing module and the brightness output module, and the main control module calculates the output value of the brightness output module when the optimal visual effect is achieved according to the proportional relation and controls the output value of the brightness output module to change the brightness of a projector. The invention can realize automatic adjustment of the brightness of the projector, so that the product is more automatic and intelligent, and has good user experience.
Description
Technical Field
The invention belongs to the technical field of optical equipment, and particularly relates to a projector brightness adjusting system and a projector brightness adjusting method.
Background
Most projector brightness adjusting system products on the market at present lack the function of brightness automatic adjustment, and when the illumination intensity of the external environment changes, the brightness of the projector needs to be adjusted manually by pressing a remote controller or pressing a key so as to achieve the best projection effect. Such an operation tends to be troublesome and it may be difficult to resolve a projected picture to find each item under a menu when it is placed in an environment where the intensity of external light is strong, possibly because the brightness of the projection by the machine itself is low. Or because the brightness of the projection of the machine is high, when the machine is placed in an environment with weak external illumination intensity, the projected picture is very dazzling, and the human eyes can be damaged.
Therefore, it is necessary to provide a system and a method for adjusting the brightness of a projector to solve the above problems.
Disclosure of Invention
The invention mainly solves the technical problem of providing a projector brightness adjusting system and a projector brightness adjusting method to solve the problems that the image brightness cannot be automatically adjusted and cannot adapt to environmental changes in the prior art.
In order to solve the technical problems, the invention adopts a technical scheme that: the projector brightness adjusting system comprises a light sensing module, a main control module and a brightness output module, wherein the light sensing module is used for sensing the brightness of ambient light, the main control module records the proportional relation between the acquisition value of the light sensing module and the brightness output module, and the main control module calculates the output value of the brightness output module when the best visual effect is achieved according to the proportional relation and controls the output value of the brightness output module to change the brightness of a projector.
Preferably, the light sensing module comprises a plurality of light sensors, and the collection value of the light sensing module is a collection average value of the plurality of light sensors.
Preferably, the brightness output module is a power supply constant current board, and the main control module controls the power supply constant current board to output current to the light source so as to change the brightness of the projector.
Preferably, the projector includes a projection lens, a camera is disposed on the projection lens, the projector brightness adjustment system further includes an image acquisition processing module connected to the camera, the image acquisition processing module records and processes the picture taken by the camera, and inputs the processing result into the main control module, and a pre-stored picture model and a proportional relationship between the picture model and the output value of the power supply constant current board are stored in the main control module.
Preferably, the main control module compares the picture shot by the camera with a picture model prestored in the main control module to obtain an actual current value, the output value of the brightness output module calculated according to the proportional relation recorded by the main control module is a theoretical current value, and the main control module compares the theoretical current value with the actual current value and correspondingly controls and adjusts the output current value of the brightness output module.
Preferably, the main control module records a proportional relation between the collection average value of the plurality of light sensors and the voltage value on the electro-optic crystal when the optimal visual effect is achieved.
Preferably, the brightness output module is an optical modulator disposed in the projection lens, a photoelectric crystal is disposed in the optical modulator, and the main control module adjusts the brightness of the projector by controlling a voltage applied to the photoelectric crystal.
In order to solve the technical problem, the invention adopts another technical scheme that: a brightness adjusting method is provided, which comprises the following steps:
and calculating an output value corresponding to the brightness output module when the optimal visual effect is to be achieved, and adjusting the output value of the brightness output module so as to change the brightness of the projector.
Preferably, the brightness output module is a power supply constant current board, and the main control module calculates a current value when the optimal visual effect is achieved and controls the current value output by the power supply constant current board.
Preferably, the method comprises the following steps:
obtaining a picture shot by a camera at the current moment and calculating the actual current size ix according to an image model stored in a main control module;
acquiring an average acquisition value of a plurality of light sensors at the current moment, and calculating a theoretical current value iy when the optimal visual effect is to be achieved according to a proportional relation stored in the main control module;
and the main control module adjusts the actual current ix to reach a theoretical current value iy.
Preferably, the method comprises the following steps:
calculating the proportional relation between the collection average values of the plurality of light sensors and the voltage values on the photoelectric transistors and recording the proportional relation in the main control module;
the main control module changes the refractive index of the electro-optical crystal by adjusting the voltage applied to the electro-optical crystal so as to enable the projection picture to achieve the best visual effect.
The invention has the beneficial effects that: different from the situation of the prior art, the projector brightness adjusting system comprises a light sensing module, a main control module and a brightness output module, wherein the light sensing module is used for sensing the brightness of ambient light, the main control module records the proportional relation between the acquisition value of the light sensing module and the brightness output module, and the main control module calculates the output value of the brightness output module when the optimal visual effect is achieved according to the proportional relation and controls the output value of the brightness output module to change the brightness of the projector. The invention can realize automatic adjustment of the brightness of the projector, so that the product is more automatic and intelligent, and has good user experience.
Drawings
FIG. 1 is a schematic diagram of a first embodiment of a brightness adjustment system for a projector according to the present invention;
FIG. 2 is a circuit diagram of a control system for a first embodiment of a brightness adjustment system for a projector according to the present invention;
FIG. 3 is a schematic diagram of a second embodiment of a brightness adjustment system for a projector according to the present invention;
FIG. 4 is a circuit diagram of a control system for a second embodiment of a brightness adjustment system for a projector according to the present invention;
FIG. 5 is a schematic diagram of a third embodiment of a brightness adjustment system for a projector according to the present invention;
fig. 6 is a circuit diagram of a control system of a third embodiment of the brightness adjustment system of the projector according to the present invention.
Detailed Description
It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
The invention provides a projector brightness adjusting system and a projector brightness adjusting method, which aim to solve the problems that in the prior art, the image brightness cannot be automatically adjusted and cannot adapt to environmental changes. The following description will be given with reference to specific embodiments.
Example one
As shown in fig. 1 and 2, the brightness adjusting system of the projector according to the present invention is applied to a projector, and performs brightness detection and adjustment in cooperation with a projection lens, an external projection interface, and ambient light of the projector during the brightness adjustment process.
The projector brightness adjusting system comprises a light sensing module, a main control module and a brightness output module. The main control module is arranged on a main board of the projector, and the main control module is a single-chip microcomputer MUC (micro control unit) which changes the brightness of the projector by controlling and changing the output value of the brightness output module. The brightness output module is a power supply constant current board which can output a constant current power supply to supply a light source under the control of the main control module, thereby realizing the control of brightness. The light source may be a laser light source, an LED light source, a UV light source, or the like.
The present embodiment is described by taking an example of performing a test in a single closed room, but this is merely one test environment for convenience of description, and may be used in other environments during actual use. For the convenience of detection, the ambient light is used as an external detection light source, and in the embodiment, the external detection light source is a power-adjustable electric lamp and is the only light source except for the projector in the closed room. The projection interface of the present embodiment is a wall surface, and may be a projection screen or the like in alternative embodiments.
The light sensing module includes a plurality of light-sensors (light-sensors) for respectively sensing the brightness emitted by the external light source, i.e. the electric lamp. The light sensors respectively detect the brightness values in the room and input the results into the main control module. The projector brightness adjusting system detects the proportional relation between the collection average value of a plurality of light sensors and the output value of the brightness output module when the brightness output module achieves the best visual effect in a laboratory in advance and records the proportional relation in the main control module through a chip.
The calculation procedure for the proportional relationship in the laboratory is: the number of the light sensors is set as n,
assuming that when the power of the electric lamp is W1, the collected luminances of the n light sensors are L1, L2 and L3 … Ln, respectively, the average value of the collected luminances is (L1+ L2+ L3)/n, and is set as L1v, at this time, the projection brightness of the projector is manually adjusted to just achieve the best visual effect, and the current value output by the power supply constant current board is tested to be i1 by using an oscilloscope. The projection brightness can be adjusted by a key or by a remote control mode.
When the power of the electric lamp is W2, the average value of the brightness collected by the n light sensors is L2v, the projection brightness of the projector is adjusted manually to just achieve the best visual effect, and the current value output by the power supply constant current board at the moment is tested to be i 2.
……
Similarly, when the power of the electric lamp is Wm, the average value of the brightness collected by the n light sensors is LmAnd v, manually adjusting the projection brightness of the projector to enable the projector to just achieve the best visual effect, and testing that the current value output by the power supply constant current board is im at the moment.
The data are recorded, and the power W of the electric lamp and the average brightness value Lv collected by the n light sensors are calculated to have a direct relation, namely Lv is K1W, and K1 is a proportionality constant. Meanwhile, the relation between Lv and the current value i is in a direct proportion, namely, Lv is K2 i, and K2 is a proportionality constant, and the relation is burnt to the MCU on the mainboard. When the light source is a laser light source, the current value i is the current value of the laser light source.
As shown in fig. 2, in the actual use process, when the average brightness value Lv collected by the light sensor on the light sensing module is obtained, the average brightness value Lv is transmitted to the main control module through an I2C protocol, and then the main control module calculates a current value I if the optimal visual effect is to be achieved according to a relation formula Lv-K2I, so as to further control the digital control potentiometer DCP on the power supply constant current board through LD-CS, LD-SCK, LD-MOSI, and LD-MISO signals, and control the LED constant current drive controller LM342X to output a constant current voltage with a current value I to the laser, thereby achieving the purpose of automatically adjusting the brightness.
Example two
Referring to fig. 3 to 4, a second embodiment of the present invention is substantially the same as the first embodiment in principle, except that in this embodiment, a camera is further disposed on the projection lens, the control system further includes an image acquisition and processing module connected to the camera, the image acquisition and processing module records and processes the picture taken by the camera, and inputs the processing result into the main control module, and the main control module stores therein a picture model and a proportional relationship between the picture model and an output value of the power supply constant current board. Specifically, in this embodiment, the image capture processing module is an image capture processing chip.
The calculation procedure for the proportional relationship in the laboratory is: the number of the light sensors is set as n,
when the power of the electric lamp is W1, the projection brightness of the projector is manually adjusted to achieve the best visual effect, an oscilloscope is used for testing that the current value output by the power supply constant current board is i1, and the average brightness collected by the n light sensors is L1And v, simultaneously taking a picture of the projection picture by the camera on the lens of the projector, wherein the model of the picture taken by the camera at the moment is X1.
When the power of the electric lamp is W2, the projection brightness of the projector is manually adjusted to achieve the best visual effect, an oscilloscope is used for testing that the current value output by the power supply constant current board is i2, and the average brightness collected by the n light sensors is L2v, simultaneously taking a picture of the projection picture by the camera on the lens of the projector, and setting the picture model taken by the camera at the moment as X2.
……
Similarly, when the power of the electric lamp is Wm, the projection brightness of the projector is manually adjusted to just achieve the best visual effect, and the current value output by the power supply constant current board is im when the oscilloscope tests that the current value is imThe average brightness collected by the n light sensors is LmAnd v, simultaneously shooting the projection picture by the camera on the lens of the projector, and setting the picture model shot by the camera at the moment as Xm.
The data are recorded, the fact that the brightness average value Lv and the current value i which are collected by the light sensor have a proportional relation can be easily deduced, namely, Lv is equal to K12 i, and K12 is a proportional constant, and the relational expression is burnt to the single-chip microcomputer MCU on the mainboard.
And integrating the image models from X1 to XM into a graphic library, loading the graphic library into an image acquisition processing chip, and burning the relational expression into the image acquisition processing chip, wherein the image models have a direct-proportion relation between X and a current value i, namely X is K3 i and K3 is a proportionality constant.
The brightness adjusting method of the present embodiment includes the steps of:
when the image projected by the projector is taken by the camera of the image acquisition processing module as X, the value is transmitted to the image acquisition processing chip through an I2C protocol, the image acquisition processing chip calculates the value of the actual current I (set as ix) according to the relation X (K3) I and transmits the value to the single-chip microcomputer MCU, meanwhile, the single-chip microcomputer MCU calculates the value of the theoretical current I (set as iy) according to the relation Lv (K2) I, and the single-chip microcomputer compares ix with iy.
If ix is smaller than iy, then it will control the digital control potentiometer DCP on the power supply constant current board through LD-CS, LD-SCK, LD-MOSI, LD-MISO signals, and finally increase the output current value of the LED control constant current drive controller LM342X by iy-ix.
If ix is larger than iy, then it will control the digital control potentiometer DCP on the power supply constant current board through LD-CS, LD-SCK, LD-MOSI, LD-MISO signals, and finally make the output current value of the LED constant current driving controller LM342X reduced by iy-ix. Finally, the projector projects the best visual effect.
EXAMPLE III
Referring to fig. 5 to 6, a third embodiment of the present invention is substantially the same as the first two embodiments, except that in this embodiment, the brightness output module is an optical modulator disposed in the projection lens, a photo-crystal is disposed in the optical modulator, and the main control module adjusts the brightness of the projector by controlling the voltage applied to the photo-crystal.
According to the principle of the electro-optical modulator, when the voltage applied to the electro-optical crystal is adjusted, the refractive index N of the electro-optical crystal in the electro-optical modulator is changed, the characteristics of light waves passing through the crystal are changed, and the adjustment of the light intensity is realized. When in laboratory test, the proportional relation between the collection average value of a plurality of light sensors and the voltage value on the photoelectric crystal is calculated in advance and recorded in the master control module;
the calculation of the proportional relation between the collection average value of the light sensor and the voltage value on the photoelectric crystal is specifically as follows: the number of the light sensors is set as n,
assuming that when the power of the electric lamp is W1, the collected luminances of the n light sensors are L1, L2 and L3 … Ln, respectively, the average value of the collected luminances is (L1+ L2+ L3)/n, and is set as L1V, adjusting the refractive index of the electro-optic crystal of the electro-optic modulator in the lens to be N1, and enabling the electro-optic crystal to just achieve the best visual effect when the voltage on the corresponding crystal is V1.
Let the average brightness value collected by the n light sensors be L when the power of the electric lamp is W22V, adjusting the refractive index of the electro-optic crystal of the electro-optic modulator in the lens to be N2, and enabling the electro-optic crystal to just achieve the best visual effect when the voltage on the corresponding crystal is V2.
……
Similarly, when the power of the electric lamp is Wm, the average value of the brightness collected by the n light sensors is Lmv, adjusting the refractive index of the electro-optical crystal of the electro-optical modulator in the lens to Nm, and enabling the electro-optical crystal to just achieve the best visual effect when the voltage on the corresponding electro-optical crystal is Vm.
The data are recorded, and it is easy to deduce that the voltage Vp on the electro-optical crystal is in a direct proportion relation with the average brightness Lv collected by the light sensor, i.e. Vp K4 Lv, K4 is a proportionality constant.
Specifically, in this embodiment, the brightness adjustment method includes:
the main control module changes the refractive index of the electro-optical crystal by adjusting the voltage applied to the electro-optical crystal so as to enable the projection picture to achieve the best visual effect, and the method comprises the following steps:
when light irradiates on a photodiode PD in the brightness sensor, the photodiode PD generates a reverse photocurrent I, the current signal is changed into a voltage signal after passing through an operational amplifier AMP, the voltage signal is changed into a digital signal after passing through an analog-to-digital converter ADC, the digital signal passes through an I2C interface, the digital signal is transmitted to a single chip microcomputer MCU through an I2C protocol, and the MCU reads the digital signal, so that the brightness value measured by the brightness sensor is obtained.
A voltage conversion chip (DC to DC) is connected behind the operational amplifier AMP of the light sensor, and the voltage value is changed after the light sensor AMP is converted from the photodiode PD to the operational amplifier AMP, so that the voltage value of the electro-optical crystal of the electro-optical modulator in the adjusting lens is obtained, the refractive index of the electro-optical crystal is changed by the voltage value, and the intensity of emergent light is changed.
For the selection of the voltage conversion chip (DC to DC), when the brightness value collected by the photodiode PD is Lv, the voltage value generated at the point a behind the operational amplifier AMP is Vk, and if Vk is to be converted into Vp, the voltage conversion chip with the amplification scale factor of K4 can be selected, and the voltage at this time just satisfies that the refractive index of the electro-optical crystal in the electro-optical modulator is N, and the finally projected picture just achieves the best visual effect.
The invention has the beneficial effects that: different from the situation of the prior art, the projector brightness adjusting system comprises a light sensing module, a main control module and a brightness output module, wherein the light sensing module is used for sensing the brightness of ambient light, the main control module records the proportional relation between the acquisition value of the light sensing module and the brightness output module, and the main control module calculates the output value of the brightness output module when the optimal visual effect is achieved according to the proportional relation and controls the output value of the brightness output module to change the brightness of the projector. The invention can realize automatic adjustment of the brightness of the projector, so that the product is more automatic and intelligent, and has good user experience.
The above description is only an embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes performed by the present specification and drawings, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.
Claims (11)
1. The projector brightness adjusting system is characterized by comprising a light sensing module, a main control module and a brightness output module, wherein the light sensing module is used for sensing the brightness of ambient light, the main control module records the proportional relation between the acquisition value of the light sensing module and the brightness output module, and the main control module calculates the output value of the brightness output module when the optimal visual effect is achieved according to the proportional relation and controls the output value of the brightness output module to change the brightness of a projector.
2. The system of claim 1, wherein the light sensor module comprises a plurality of light sensors, and the collection value of the light sensor module is a collection average value of the plurality of light sensors.
3. The system of claim 1, wherein the brightness output module is a power constant current board, and the main control module controls the power constant current board to output current to the light source so as to change the brightness of the projector.
4. The system of claim 3, wherein the projector comprises a projection lens, a camera is disposed on the projection lens, the system further comprises an image acquisition and processing module connected to the camera, the image acquisition and processing module records and processes the image captured by the camera and inputs the processing result to the main control module, and the main control module stores a pre-stored image model and a proportional relationship between the image model and the output value of the power constant current board.
5. The system of claim 4, wherein the main control module compares the image captured by the camera with a pre-stored image model in the main control module to obtain an actual current value, the output value of the luminance output module calculated according to the proportional relationship recorded by the main control module is a theoretical current value, and the main control module compares the theoretical current value with the actual current value and controls and adjusts the output current value of the luminance output module accordingly.
6. The system of claim 2, wherein the master control module records a ratio of the average collection value of the plurality of light sensors to the voltage across the electro-optic crystal for achieving the best visual effect.
7. The system of claim 6, wherein the projector comprises a projection lens, the brightness output module is a light modulator disposed in the projection lens, a photoelectric crystal is disposed in the light modulator, and the main control module controls the voltage applied to the photoelectric crystal to adjust the brightness of the projector.
8. A brightness adjustment method characterized by employing the projector brightness adjustment system according to any one of claims 1 to 7, comprising the steps of:
and calculating the output value of the corresponding brightness output module when the optimal visual effect is to be achieved, and adjusting the output value of the brightness output module so as to change the brightness of the projector.
9. The luminance adjustment method according to claim 8,
the brightness output module is a power supply constant current board, and the main control module calculates a current value when the optimal visual effect is achieved and controls the current value output by the power supply constant current board.
10. The luminance adjustment method according to claim 8, characterized by comprising the steps of:
obtaining a picture shot by a camera at the current moment and calculating the actual current size ix according to an image model stored in a main control module;
acquiring an average acquisition value of a plurality of light sensors at the current moment, and calculating a theoretical current value iy when the optimal visual effect is to be achieved according to a proportional relation stored in the main control module;
and the main control module adjusts the actual current ix to reach a theoretical current value iy.
11. The luminance adjustment method according to claim 8, characterized by comprising the steps of:
calculating the proportional relation between the collection average values of the plurality of light sensors and the voltage values on the photoelectric transistors and recording the proportional relation in the main control module;
the main control module changes the refractive index of the electro-optical crystal by adjusting the voltage applied to the electro-optical crystal so as to enable the projection picture to achieve the best visual effect.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810966404.4A CN110858052B (en) | 2018-08-23 | 2018-08-23 | Projector brightness adjusting system and brightness adjusting method |
| PCT/CN2019/076646 WO2020037972A1 (en) | 2018-08-23 | 2019-03-01 | Projector brightness adjustment system and brightness adjustment method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810966404.4A CN110858052B (en) | 2018-08-23 | 2018-08-23 | Projector brightness adjusting system and brightness adjusting method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110858052A true CN110858052A (en) | 2020-03-03 |
| CN110858052B CN110858052B (en) | 2022-08-09 |
Family
ID=69592403
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810966404.4A Active CN110858052B (en) | 2018-08-23 | 2018-08-23 | Projector brightness adjusting system and brightness adjusting method |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN110858052B (en) |
| WO (1) | WO2020037972A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112053648A (en) * | 2020-07-30 | 2020-12-08 | 青岛九石智能科技股份有限公司 | Method and device for controlling storage cabinet and storage cabinet |
Citations (21)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005106951A (en) * | 2003-09-29 | 2005-04-21 | Seiko Epson Corp | Driving control of projector and light source lamp for projector |
| US20050110958A1 (en) * | 2003-11-21 | 2005-05-26 | Howell Schwartz | System and method for managing projector bulb life |
| WO2006001470A1 (en) * | 2004-06-24 | 2006-01-05 | Seiko Epson Corporation | Light source driving method and projector |
| CN101006489A (en) * | 2004-05-10 | 2007-07-25 | 富可视公司 | Projection apparatus comprising a led control system with feedback, and driving method therefor |
| CN101976012A (en) * | 2010-09-16 | 2011-02-16 | 青岛海信电器股份有限公司 | Method and device for regulating brightness of light source as well as laser projection equipment |
| CN102183869A (en) * | 2011-03-22 | 2011-09-14 | 中国科学院半导体研究所 | Laser projection display system based on full-semiconductor laser |
| CN102203669A (en) * | 2008-10-31 | 2011-09-28 | Nec显示器解决方案株式会社 | Projector, and method and program for adjusting luminance of projection image |
| KR20120029246A (en) * | 2010-09-16 | 2012-03-26 | 용인송담대학 산학협력단 | Apparatus and method of controlling brightness of lamp in a projector automatically |
| WO2012063430A1 (en) * | 2010-11-08 | 2012-05-18 | 船井電機株式会社 | Image display device |
| CN103176339A (en) * | 2012-08-23 | 2013-06-26 | 深圳市金立通信设备有限公司 | System and method for automatically adjusting projection brightness |
| US20140192331A1 (en) * | 2013-01-04 | 2014-07-10 | Seiko Epson Corporation | Projector and method for controlling the same |
| CN104111579A (en) * | 2014-07-04 | 2014-10-22 | 深圳雅图数字视频技术有限公司 | Method for adjusting contrast of projector in real time and projector |
| CN204302648U (en) * | 2014-12-01 | 2015-04-29 | 苏州芯创智汇电子科技有限公司 | One carries out projector brightness and color automatic regulating system by camera |
| CN104635408A (en) * | 2015-03-11 | 2015-05-20 | 青岛海信信芯科技有限公司 | Projection device, projection system and method for regulating projection brightness of projection system |
| CN106597788A (en) * | 2016-12-15 | 2017-04-26 | 广东威创视讯科技股份有限公司 | Color channel adjustment, light source brightness adjustment, splicing wall brightness method and system |
| CN106918981A (en) * | 2017-04-25 | 2017-07-04 | 苏州佳世达光电有限公司 | Dynamic brightness method of adjustment and projector |
| CN206442567U (en) * | 2016-11-17 | 2017-08-25 | 深圳市光峰光电技术有限公司 | A kind of light-source brightness control system, light-source system and projector equipment |
| CN107219716A (en) * | 2017-07-20 | 2017-09-29 | 安庆状元郎电子科技有限公司 | A kind of projecting apparatus for being applied to automatic regulating lightness in multi-media classroom |
| CN107290916A (en) * | 2016-04-01 | 2017-10-24 | 英济股份有限公司 | Laser light adjusting system |
| CN107305312A (en) * | 2016-04-18 | 2017-10-31 | 扬明光学股份有限公司 | Projection brightness and the automatic adjustment system and method for contrast |
| JP2018013656A (en) * | 2016-07-22 | 2018-01-25 | キヤノン株式会社 | Projection type display device |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100489651C (en) * | 2005-12-29 | 2009-05-20 | 联想(北京)有限公司 | Luminance self-adjusting projector and method thereof |
| CN101350933B (en) * | 2008-09-02 | 2011-09-14 | 广东威创视讯科技股份有限公司 | Method for regulating lighteness of filmed display screen based on image inductor |
| CN106094405B (en) * | 2016-06-03 | 2017-11-21 | 海信集团有限公司 | Projected picture correcting method, device and projector |
-
2018
- 2018-08-23 CN CN201810966404.4A patent/CN110858052B/en active Active
-
2019
- 2019-03-01 WO PCT/CN2019/076646 patent/WO2020037972A1/en active Application Filing
Patent Citations (21)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005106951A (en) * | 2003-09-29 | 2005-04-21 | Seiko Epson Corp | Driving control of projector and light source lamp for projector |
| US20050110958A1 (en) * | 2003-11-21 | 2005-05-26 | Howell Schwartz | System and method for managing projector bulb life |
| CN101006489A (en) * | 2004-05-10 | 2007-07-25 | 富可视公司 | Projection apparatus comprising a led control system with feedback, and driving method therefor |
| WO2006001470A1 (en) * | 2004-06-24 | 2006-01-05 | Seiko Epson Corporation | Light source driving method and projector |
| CN102203669A (en) * | 2008-10-31 | 2011-09-28 | Nec显示器解决方案株式会社 | Projector, and method and program for adjusting luminance of projection image |
| CN101976012A (en) * | 2010-09-16 | 2011-02-16 | 青岛海信电器股份有限公司 | Method and device for regulating brightness of light source as well as laser projection equipment |
| KR20120029246A (en) * | 2010-09-16 | 2012-03-26 | 용인송담대학 산학협력단 | Apparatus and method of controlling brightness of lamp in a projector automatically |
| WO2012063430A1 (en) * | 2010-11-08 | 2012-05-18 | 船井電機株式会社 | Image display device |
| CN102183869A (en) * | 2011-03-22 | 2011-09-14 | 中国科学院半导体研究所 | Laser projection display system based on full-semiconductor laser |
| CN103176339A (en) * | 2012-08-23 | 2013-06-26 | 深圳市金立通信设备有限公司 | System and method for automatically adjusting projection brightness |
| US20140192331A1 (en) * | 2013-01-04 | 2014-07-10 | Seiko Epson Corporation | Projector and method for controlling the same |
| CN104111579A (en) * | 2014-07-04 | 2014-10-22 | 深圳雅图数字视频技术有限公司 | Method for adjusting contrast of projector in real time and projector |
| CN204302648U (en) * | 2014-12-01 | 2015-04-29 | 苏州芯创智汇电子科技有限公司 | One carries out projector brightness and color automatic regulating system by camera |
| CN104635408A (en) * | 2015-03-11 | 2015-05-20 | 青岛海信信芯科技有限公司 | Projection device, projection system and method for regulating projection brightness of projection system |
| CN107290916A (en) * | 2016-04-01 | 2017-10-24 | 英济股份有限公司 | Laser light adjusting system |
| CN107305312A (en) * | 2016-04-18 | 2017-10-31 | 扬明光学股份有限公司 | Projection brightness and the automatic adjustment system and method for contrast |
| JP2018013656A (en) * | 2016-07-22 | 2018-01-25 | キヤノン株式会社 | Projection type display device |
| CN206442567U (en) * | 2016-11-17 | 2017-08-25 | 深圳市光峰光电技术有限公司 | A kind of light-source brightness control system, light-source system and projector equipment |
| CN106597788A (en) * | 2016-12-15 | 2017-04-26 | 广东威创视讯科技股份有限公司 | Color channel adjustment, light source brightness adjustment, splicing wall brightness method and system |
| CN106918981A (en) * | 2017-04-25 | 2017-07-04 | 苏州佳世达光电有限公司 | Dynamic brightness method of adjustment and projector |
| CN107219716A (en) * | 2017-07-20 | 2017-09-29 | 安庆状元郎电子科技有限公司 | A kind of projecting apparatus for being applied to automatic regulating lightness in multi-media classroom |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112053648A (en) * | 2020-07-30 | 2020-12-08 | 青岛九石智能科技股份有限公司 | Method and device for controlling storage cabinet and storage cabinet |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2020037972A1 (en) | 2020-02-27 |
| CN110858052B (en) | 2022-08-09 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104111579B (en) | Regulate in real time method and the projector of contrast ratio of projector | |
| US8860819B2 (en) | Automated lighting system characterization device and system | |
| CN110346120B (en) | System and method for testing strong light resolution and dynamic range of automatic gate control image intensifier | |
| CN102128679B (en) | Light sensing circuit and method thereof | |
| CN101295084B (en) | Back light source brightness automatic regulating system and method | |
| CN102012614A (en) | Projection device with function of automatically adjusting projection brightness and method | |
| MXPA02007367A (en) | Method and apparatus for controlling common mode electrode voltage in lcos/lcd. | |
| CN106405382A (en) | Performance test system for low-illumination CMOS chip | |
| CN202082821U (en) | Dimmer for automobile headlamp | |
| CN110858052B (en) | Projector brightness adjusting system and brightness adjusting method | |
| CN105592278B (en) | Electronic device and projected picture method of adjustment | |
| CN106094198A (en) | A kind of intelligence color selector optical system self-adapting correction method and device | |
| CN208656905U (en) | A kind of light compensating lamp control equipment | |
| CN107990980A (en) | A kind of projector brightness on-line detecting system | |
| CN208459716U (en) | A kind of liquid crystal display detection device | |
| CN207622867U (en) | A kind of projector brightness on-line detecting system | |
| CN104019962B (en) | Detection method and device for service life of projector | |
| CN101976015A (en) | Projection device and method capable of automatically adjusting projection brightness | |
| CN102073203A (en) | Projection device and method capable of automatically adjusting projection brightness | |
| CN209913938U (en) | Camera detection locking system based on optical imaging | |
| CN109031926B (en) | Imaging delay time measuring device and method of camera device | |
| JP2015201282A (en) | Solid-state imaging apparatus capable of illuminance detection, camera employing the same, lighting equipment and display device | |
| CN101604508A (en) | The method of a kind of televisor and adjustment backlight thereof | |
| CN204180143U (en) | A kind of automatic visual checkout facility of mobile terminal | |
| CN207897093U (en) | CCD/CMOS parameter detecting systems |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |