CN106686360A - LED light source control method and system for DLP projector - Google Patents
LED light source control method and system for DLP projector Download PDFInfo
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- CN106686360A CN106686360A CN201611161483.9A CN201611161483A CN106686360A CN 106686360 A CN106686360 A CN 106686360A CN 201611161483 A CN201611161483 A CN 201611161483A CN 106686360 A CN106686360 A CN 106686360A
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- 238000007689 inspection Methods 0.000 claims description 18
- 238000001514 detection method Methods 0.000 claims description 11
- 239000000284 extract Substances 0.000 claims description 5
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N9/00—Details of colour television systems
- H04N9/12—Picture reproducers
- H04N9/31—Projection devices for colour picture display, e.g. using electronic spatial light modulators [ESLM]
- H04N9/3141—Constructional details thereof
- H04N9/315—Modulator illumination systems
- H04N9/3155—Modulator illumination systems for controlling the light source
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- Signal Processing (AREA)
- Projection Apparatus (AREA)
- Video Image Reproduction Devices For Color Tv Systems (AREA)
Abstract
The invention relates to an LED light source control method and system for a DLP projector. The method comprises the following steps: obtaining an input signal of the DLP projector, and extracting projection display image data from the input signal; detecting the real-time color parameters of pixels in the image data, and judging whether the real-time color parameters reach preset color parameter threshold values or not; outputting a first control instruction to a DMD chip if the real-time color parameters reach preset color parameter threshold values, and adjusting the DMD chip to an off state; and outputting a second control instruction to turn off the LED light source of the DLP projector. When the DMD chip is enabled to be in the off state and the DMD chip does not need a corresponding LED light source, the LED light source of the DLP projector stops working, thereby achieving a purpose of saving energy. Moreover, after the LED light source of the DLP projector is turned off, the above LED light source does not dissipate heat, and the continuous increasing of the internal temperature of the DLP projector can be alleviated, thereby facilitating the prolonging of the service life of the DLP projector.
Description
Technical field
The present invention relates to video signal treatment technique field, the LED/light source controlling party of more particularly to a kind of DLP projector
Method and system.
Background technology
DLP projector (digital light processing projector) is with digital micro-mirror device DMD (digital micromirror
Device, digital micromirror array) used as image device, one kind that projects images are realized by adjusting reflected light projects skill to chip
Art, its imaging is realized by thousands of small lens reflecting light.It is small that dmd chip surface has been covered with volume
Rotatable micro mirror by rotating come reflection light, the DLP controllers in DLP projector are rotated by control dmd chip and make phase
The light answered reflexes to the target locations such as projector lens, to realize the Projection Display of the view data acquired in DLP controllers,
During its view data is realized in the control dmd chip rotation of DLP controllers, LED (light emitting diode) light of DLP projector
Source keeps often bright state, and loss is larger, easily affects corresponding projector's service life.
The content of the invention
Based on this, it is necessary to the LED/light source of DLP projector is lost for traditional scheme larger, easily affects corresponding
The technical problem of projector's service life, there is provided a kind of LED light operated control method of DLP projector and system.
A kind of LED light operated control method of DLP projector, comprises the steps：
The input signal of DLP projector is obtained, the view data of Projection Display is extracted from input signal；
The real-time color parameter of pixel in inspection image data, using real-time described in default color parameter threshold decision
Color parameter；
When real-time color parameter reaches the color parameter threshold value, the first control instruction of output, will be described to dmd chip
Dmd chip is adjusted to off states；And export the second control instruction close DLP projector LED/light source.
A kind of LED light source control system of DLP projector, including：
Acquisition module, for obtaining the input signal of DLP projector, extracts the picture number of Projection Display from input signal
According to；
Detection module, for the real-time color parameter of pixel in inspection image data, using default color parameter threshold
Value judges the real-time color parameter；
First output module, for when real-time color parameter reaches the color parameter threshold value, the control of output first to refer to
Make to dmd chip, the dmd chip is adjusted to off states；And export the second control instruction close DLP projector LED light
Source.
The LED light operated control method of above-mentioned DLP projector and system, can obtain the input signal of DLP projector, and from
The middle view data for extracting Projection Display, with the real-time color parameter of pixel in inspection image data, recycles default face
Color parameter threshold judges the real-time color parameter, when real-time color parameter reaches the color parameter threshold value, output first
Control instruction is adjusted the dmd chip to off states to dmd chip；And export the second control instruction close DLP projector
LED/light source；Above-mentioned dmd chip is made in off states, dmd chip without the need for corresponding LED/light source irradiation when, DLP projector
LED/light source quits work, it is possible to achieve energy-conservation purpose, and after the LED/light source for closing DLP projector, above-mentioned LED/light source is no longer
Heat is distributed, the lasting rising of temperature in DLP projector can be alleviated, be conducive to improving the service life of corresponding DLP projector.
Description of the drawings
Fig. 1 is the LED/light source control method flow chart of the DLP projector of one embodiment；
Fig. 2 is the internal control block diagram of the DLP projector of one embodiment；
Fig. 3 is the LED light source control system structural representation of the DLP projector of one embodiment.
Specific embodiment
Below in conjunction with the accompanying drawings to the LED light operated control method and the specific embodiment of system of DLP projector of the invention
It is described in detail.
With reference to Fig. 1, Fig. 1 show the LED/light source control method flow chart of the DLP projector of one embodiment, including such as
Lower step：
S10, obtains the input signal of DLP projector, and the view data of Projection Display is extracted from input signal；
The internal control block diagram of DLP projector may be referred to shown in Fig. 2, including DLP controllers 51, dmd chip 52, LED
The dark piece 54 of light source 53, extinction and projection lens 55；Above-mentioned DLP controllers 51 connect respectively dmd chip 52 and LED/light source 53, DMD
Chip 52 is also connected with LED/light source 53.In DLP projector, DLP controllers 51 can read the input signal of outside, control above-mentioned
Input signal carries out corresponding Projection Display.
Above-mentioned input signal can include that outer transfer device or outer transfer device network transmission, to DLP projector, need above-mentioned
DLP projector carries out the signal of Projection Display, can include that the movable storage device for accessing DLP projector is uploaded to the DLP and throws
The corresponding data of shadow machine.Under normal circumstances, input signal includes view data, and the DLP controllers of DLP projector can be from defeated
Enter and extract in signal view data therein, controlling dmd chip carries out the Projection Display of above-mentioned view data.
S20, the real-time color parameter of pixel in inspection image data, using described in default color parameter threshold decision
Real-time color parameter；
Above-mentioned real-time color parameter can be included in the image data pixel point for will carry out in DLP controllers Projection Display
The parameter such as gray value, rgb value.Above-mentioned steps can respectively detect the real-time color ginseng of each pixel in respective image data
Number；Judge whether each real-time color parameter reaches the color parameter threshold value respectively using default color parameter threshold value,
Such as, above-mentioned real-time color parameter is gray value, and color parameter threshold value is gray value threshold value, then can detect respective image data
In each pixel gray value, judge whether each real-time color parameter is equal to above-mentioned gray value threshold value respectively.
S30, when real-time color parameter reaches the color parameter threshold value, the first control instruction of output to dmd chip will
The dmd chip is adjusted to off states；And export the second control instruction close DLP projector LED/light source.
In above-mentioned steps, when real-time color parameter reaches the color parameter threshold value, show now from input signal
View data of the view data for black is extracted, the dmd chip can be adjusted to off states, dmd chip is without the need for projection
Camera lens is projected accordingly, does not now need the irradiation of corresponding LED/light source, closes the LED/light source of DLP projector, is not affected
The Projection Display effect of DLP projector.
The LED light operated control method of the DLP projector that the present invention is provided, can obtain the input signal of DLP projector, and
The view data of Projection Display is therefrom extracted, with the real-time color parameter of pixel in inspection image data, is recycled default
Real-time color parameter described in color parameter threshold decision, when real-time color parameter reaches the color parameter threshold value, output the
One control instruction is adjusted the dmd chip to off states to dmd chip；And export the second control instruction close DLP projection
The LED/light source of machine；Above-mentioned dmd chip is made in off states, dmd chip without the need for corresponding LED/light source irradiation when, DLP projector
LED/light source quit work, it is possible to achieve energy-conservation purpose, and close DLP projector LED/light source after, above-mentioned LED/light source is not
Heat is distributed again, can alleviate the lasting rising of temperature in DLP projector, be conducive to improving the use longevity of corresponding DLP projector
Life.
In one embodiment, when real-time color parameter is not up to the color parameter threshold value, the control of output first refers to
Make to DMD, the dmd chip is adjusted to working condition；And export the second control instruction open DLP projector LED/light source.
In the present embodiment, real-time color parameter is not up to the color parameter threshold value, and now dmd chip is needed to projection lens
Head is projected accordingly, and dmd chip needs the irradiation of LED/light source, just can guarantee that the quality of Projection Display, now can export
First control instruction is adjusted the dmd chip to working condition to DMD, and exports the second control instruction unlatching DLP projector
LED/light source, to ensure display quality when DLP projector carries out Projection Display.
As one embodiment, when DLP projector carries out projection work, a picture can be input into DLP, if above-mentioned
Picture is black, and DLP controllers can obtain being input into detection of the picture for black by the real-time color parameter in detection picture
As a result, the first control instruction can be now exported to dmd chip, the front of the dmd chip is rotated to the extinction shown in Fig. 2
The direction that dark piece is located, is operated the state 2 that DMD is turned to shown in Fig. 2；Now, the LED/light source of DLP projector is got to
Light above dmd chip is reflected to the side of ray machine, is absorbed, and now light is not reflected to camera lens, so relative users
Outside it is seen that a black picture.In traditional scheme, now LED/light source is still in illuminating state, and does not play a role,
Contrary its light is all reflected to projector the inside, causes the rising of projector's internal temperature；If the LED provided using the present invention
Light source control method, then can be when it be the testing result of black to detect input picture, and control dmd chip is operated in state 2
(front of off states, such as dmd chip rotates the direction being located to the dark piece of extinction), now, all of micro mirror on dmd chip
State 2 is in, and DLP controllers issue the instruction of a closing LED/light source simultaneously, make LED/light source be in OFF state.
(front of normal operating conditions, such as dmd chip is rotated to projection lens in state 1 to need all or part of DMD micro mirrors
The direction at place), then can open LED/light source.The effect for exporting correct pixel so can be both reached, energy can have been saved again,
The heat inside projector is reduced, the service life of LED/light source is lifted.
In one embodiment, in above-mentioned inspection image data pixel real-time color parameter, using default color
Parameter threshold judges that the process of the real-time color parameter can include：
The gray value of each pixel in difference inspection image data；
Judge whether each gray value is equal to default gray value threshold value, if so, then judge that real-time color parameter reaches
The color parameter threshold value.
Used as one embodiment, the span of above-mentioned gray value threshold value can be 0.
In the present embodiment, if all gray values for detecting are 0, show the picture number that corresponding view data is black
According to.The judgement of real-time color parameter in view data is carried out using gray value, deterministic process can be simplified, improve corresponding judgement
Efficiency.
In one embodiment, in above-mentioned inspection image data pixel real-time color parameter, using default color
Parameter threshold judges that the process of the real-time color parameter includes：
The rgb value of each pixel in difference inspection image data；
Judge whether each rgb value is equal to default RGB threshold values, if so, then judge that real-time color parameter reaches described
Color parameter threshold value.
As one embodiment, above-mentioned RGB threshold values for (0,0,0).
If any one rgb value is equal to default RGB threshold values, show the view data that corresponding view data is black.
The present embodiment carries out the judgement of real-time color parameter in view data using RGB, it is ensured that what is detected is real-time
Color parameter it is comprehensive, so as to improve the accuracy of corresponding deterministic process.
With reference to Fig. 3, Fig. 3 show the LED light source control system structural representation of the DLP projector of one embodiment, bag
Include following steps：
Acquisition module 10, for obtaining the input signal of DLP projector, extracts the image of Projection Display from input signal
Data；
The internal control block diagram of DLP projector may be referred to shown in Fig. 2, including DLP controllers 51, dmd chip 52, LED
The dark piece 54 of light source 53, extinction and projection lens 55；Above-mentioned DLP controllers 51 connect respectively dmd chip 52 and LED/light source 53, DMD
Chip 52 is also connected with LED/light source 53.In DLP projector, DLP controllers 51 can read the input signal of outside, control above-mentioned
Input signal carries out corresponding Projection Display.
Above-mentioned input signal can include that outer transfer device or outer transfer device network transmission, to DLP projector, need above-mentioned
DLP projector carries out the signal of Projection Display, can include that the movable storage device for accessing DLP projector is uploaded to the DLP and throws
The corresponding data of shadow machine.Under normal circumstances, input signal includes view data, and the DLP controllers of DLP projector can be from defeated
Enter and extract in signal view data therein, controlling dmd chip carries out the Projection Display of above-mentioned view data.
Detection module 20, for the real-time color parameter of pixel in inspection image data, using default color parameter
Real-time color parameter described in threshold decision；
Above-mentioned real-time color parameter can be included in the image data pixel point for will carry out in DLP controllers Projection Display
The parameter such as gray value, rgb value.Above-mentioned steps can respectively detect the real-time color ginseng of each pixel in respective image data
Number；Judge whether each real-time color parameter reaches the color parameter threshold value respectively using default color parameter threshold value,
Such as, above-mentioned real-time color parameter is gray value, and color parameter threshold value is gray value threshold value, then can detect respective image data
In each pixel gray value, judge whether each real-time color parameter is equal to above-mentioned gray value threshold value respectively.
First output module 30, for when real-time color parameter reaches the color parameter threshold value, output first to be controlled
Instruct to dmd chip, the dmd chip is adjusted to off states；And export the second control instruction close DLP projector LED
Light source.
When real-time color parameter reaches the color parameter threshold value, show now to extract view data from input signal
For the view data of black, the dmd chip can be adjusted to off states, dmd chip to projection lens without the need for carrying out accordingly
Projection, now do not need the irradiation of corresponding LED/light source, close the LED/light source of DLP projector, do not affect the throwing of DLP projector
Shadow display effect.
In one embodiment, the LED light source control system of above-mentioned DLP projector, also includes：
Second output module, for when real-time color parameter is not up to the color parameter threshold value, output first to be controlled
Instruct to DMD, the dmd chip is adjusted to working condition；And export the second control instruction open DLP projector LED light
Source.
In the present embodiment, real-time color parameter is not up to the color parameter threshold value, shows that now dmd chip is needed to throwing
Shadow camera lens is projected accordingly, and now DMD is in normal operating conditions, needs the irradiation of LED/light source, just can guarantee that projection is aobvious
The quality shown, can now export the first control instruction to DMD, and the dmd chip is adjusted to working condition, and export second
Control instruction opens the LED/light source of DLP projector, to ensure display quality when DLP projector carries out Projection Display.
In one embodiment, above-mentioned detection module is further used for：
The gray value of each pixel in difference inspection image data；
Judge whether each gray value is equal to default gray value threshold value, if so, then judge that real-time color parameter reaches
The color parameter threshold value.
In one embodiment, above-mentioned detection module is further used for：
The rgb value of each pixel in difference inspection image data；
Judge whether each rgb value is equal to default RGB threshold values, if so, then judge that real-time color parameter reaches described
Color parameter threshold value.
The LED light of the DLP projector that the LED light source control system of the DLP projector that the present invention is provided is provided with the present invention
Operated control method correspond, the DLP projector LED light operated control method embodiment illustrate technical characteristic and its
Beneficial effect suitable for the embodiment of the LED light source control system of DLP projector, hereby give notice that.
Each technical characteristic of embodiment described above can be combined arbitrarily, to make description succinct, not to above-mentioned reality
Apply all possible combination of each technical characteristic in example to be all described, as long as however, the combination of these technical characteristics is not deposited
In contradiction, the scope of this specification record is all considered to be.
Embodiment described above only expresses the several embodiments of the present invention, and its description is more concrete and detailed, but and
Can not therefore be construed as limiting the scope of the patent.It should be pointed out that for one of ordinary skill in the art comes
Say, without departing from the inventive concept of the premise, some deformations and improvement can also be made, these belong to the protection of the present invention
Scope.Therefore, the protection domain of patent of the present invention should be defined by claims.
Claims (10)
1. the LED light operated control method of a kind of DLP projector, it is characterised in that comprise the steps：
The input signal of DLP projector is obtained, the view data of Projection Display is extracted from input signal；
The real-time color parameter of pixel in inspection image data, using real-time color described in default color parameter threshold decision
Parameter；
When real-time color parameter reaches the color parameter threshold value, the first control instruction is exported to dmd chip, by the DMD
Chip is adjusted to off states；And export the second control instruction close DLP projector LED/light source.
2. the LED light operated control method of DLP projector according to claim 1, it is characterised in that when real-time color parameter
Not up to the color parameter threshold value when, output the first control instruction to DMD, the dmd chip is adjusted to working condition；And
Export the LED/light source that the second control instruction opens DLP projector.
3. the LED light operated control method of DLP projector according to claim 1, it is characterised in that the detection image number
According to the real-time color parameter of middle pixel, using the process bag of real-time color parameter described in default color parameter threshold decision
Include：
The gray value of each pixel in difference inspection image data；
Judge whether each gray value is equal to default gray value threshold value, if so, then judge that real-time color parameter reaches described
Color parameter threshold value.
4. the LED light operated control method of DLP projector according to claim 3, it is characterised in that the gray value threshold value
For 0.
5. the LED light operated control method of DLP projector according to claim 1, it is characterised in that the detection image number
According to the real-time color parameter of middle pixel, using the process bag of real-time color parameter described in default color parameter threshold decision
Include：
The rgb value of each pixel in difference inspection image data；
Judge whether each rgb value is equal to default RGB threshold values, if so, then judge that real-time color parameter reaches the color
Parameter threshold.
6. the LED light operated control method of DLP projector according to claim 5, it is characterised in that the RGB threshold values are
(0,0,0).
7. a kind of LED light source control system of DLP projector, it is characterised in that include：
Acquisition module, for obtaining the input signal of DLP projector, extracts the view data of Projection Display from input signal；
Detection module, for the real-time color parameter of pixel in inspection image data, is sentenced using default color parameter threshold value
The disconnected real-time color parameter；
First output module, for when real-time color parameter reaches the color parameter threshold value, the first control instruction of output to be extremely
Dmd chip, the dmd chip is adjusted to off states；And export the second control instruction close DLP projector LED/light source.
8. the LED light source control system of DLP projector according to claim 7, it is characterised in that also include：
Second output module, for when real-time color parameter is not up to the color parameter threshold value, exporting the first control instruction
To DMD, the dmd chip is adjusted to working condition；And export the second control instruction open DLP projector LED/light source.
9. the LED light source control system of DLP projector according to claim 7, it is characterised in that the detection module enters
One step is used for：
The gray value of each pixel in difference inspection image data；
Judge whether each gray value is equal to default gray value threshold value, if so, then judge that real-time color parameter reaches described
Color parameter threshold value.
10. the LED light source control system of DLP projector according to claim 7, it is characterised in that the detection module
It is further used for：
The rgb value of each pixel in difference inspection image data；
Judge whether each rgb value is equal to default RGB threshold values, if so, then judge that real-time color parameter reaches the color
Parameter threshold.
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| CN201611161483.9A CN106686360B (en) | 2016-12-15 | 2016-12-15 | The LED light operated control method and system of DLP projector |
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| CN201611161483.9A CN106686360B (en) | 2016-12-15 | 2016-12-15 | The LED light operated control method and system of DLP projector |
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| CN109062283A (en) * | 2018-07-20 | 2018-12-21 | 中国电影器材有限责任公司 | A kind of temperature monitoring method and device of dmd chip |
| CN110082990A (en) * | 2019-04-26 | 2019-08-02 | 江苏明德之星激光显示科技有限公司 | A kind of laser projecting lamp |
| CN111341230A (en) * | 2018-12-19 | 2020-06-26 | 青岛海信激光显示股份有限公司 | Projection display device and control method thereof |
| CN111830772A (en) * | 2019-04-18 | 2020-10-27 | 青岛海信激光显示股份有限公司 | Laser projection device and control method thereof |
| CN113053273A (en) * | 2020-12-15 | 2021-06-29 | 四川长虹电器股份有限公司 | Method for judging and controlling lighting of DLP micro-throw product optical machine through IIC communication |
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| CN113053273A (en) * | 2020-12-15 | 2021-06-29 | 四川长虹电器股份有限公司 | Method for judging and controlling lighting of DLP micro-throw product optical machine through IIC communication |
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|---|---|
| CN106686360B (en) | 2019-10-11 |
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