CN104681007B - A kind of method of work of the multistage brightness stability system of real-time - Google Patents
A kind of method of work of the multistage brightness stability system of real-time Download PDFInfo
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- CN104681007B CN104681007B CN201510115494.2A CN201510115494A CN104681007B CN 104681007 B CN104681007 B CN 104681007B CN 201510115494 A CN201510115494 A CN 201510115494A CN 104681007 B CN104681007 B CN 104681007B
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- 238000000034 method Methods 0.000 title claims abstract description 9
- 230000033228 biological regulation Effects 0.000 claims description 3
- 230000003287 optical effect Effects 0.000 claims description 3
- 238000003745 diagnosis Methods 0.000 abstract description 4
- 230000006641 stabilisation Effects 0.000 abstract description 2
- 230000007246 mechanism Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000032683 aging Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
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- 239000003381 stabilizer Substances 0.000 description 1
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Abstract
The invention discloses a kind of method of work of the multistage brightness stability system of real-time, the step of the step of it includes brightness stability, brightness is calibrated stepwise.The present invention calibrates medical display per single order brightness, with reference to LCD backlight systems stabilisation, ensure that the uniformity and stability of display brightness, improves accuracy and the efficiency of diagnosis.
Description
Technical field
The present invention relates to a kind of method of work of the multistage brightness stability system of real-time.
Background technology
Brightness constancy is the important indicator for evaluating medical display image displaying quality, and display backlight lantern festival is with making
And aging elongated with the time, in turn results in the decay of image display brightness, display can be effectively ensured by establishing brightness stability mechanism
The stability of device brightness.Only highest gear brightness is corrected in traditional brightness stabiliser, other grades of brightness pass through meter
Obtain, this scheme is difficult to ensure that each grade of brightness meets setting value, and more displays can not be realized in same brightness gear
The uniformity of lower display brightness.And when carrying out contrast diagnosis using more displays, brightness uniformity is prerequisite.
The content of the invention
The object of the present invention is to provide a kind of method of work of the multistage brightness stability system of real-time.
To achieve the object of the present invention, the present invention uses technical solution：A kind of multistage brightness stability system of real-time, is realized
The uniformity and stability of medical display image display brightness, it is characterised in that every single order brightness to setting is calibrated,
Ensure that different displays its display brightness by calibration under same brightness gear is consistent.
Brightness regulation exponent number is set as N, i-th (i=1,2 ... N) corresponding target brightness value of rank of setting is Li；
Establish brightness stability system：Backlight sensor is installed in the display, which obtains display backlight in real time
Return value, there are correspondence, each actual displayed brightness to correspond to one for the return value and the brightness of display actual displayed
Backlight sensor target return value.For certain luminance, compare the real-time return value of backlight sensor and the brightness for target
Return value, if return value is more than target return value in real time, reduces the PWM value of backlight, if return value is returned more than target in real time
Value, then increase the PWM value of backlight, if return value is equal to target return value in real time, terminates PWM and adjusts, PWM value is stored in and is deposited
Device.
It will be set as F per the corresponding backlight sensor initial target return value of single order brightnessi；
Display brightness is calibrated stepwise：For the i-th rank, display is allowed to show white field picture, by adjusting backlight
PWM value display brightness is adjusted to Li, obtain the real-time return value T of the display brightness lower back optical sensori, by FiReplace with
Ti；
The present invention has the advantages that：The present invention is each to display on the premise of brightness stability mechanism is established
Shelves brightness is corrected, and is ensured to ensure that the uniformity of brightness while display brightness is stablized, is improved the accurate of diagnosis
Degree and efficiency.
Brief description of the drawings
Fig. 1 is brightness stability mechanism flow diagram in the present invention.
Fig. 2 is brightness correcting process schematic diagram stepwise in the present invention.
Embodiment
The invention will be further described with reference to the accompanying drawings and embodiments：
The present invention provides a kind of method of work specific embodiment of the multistage brightness stability system of real-time, the present embodiment will
Brightness regulation is divided into 5 gears, and per gear, setting brightness value is respectively a, b, c, d, e.Its step is as follows：
Step 1：Refering to what is shown in Fig. 1, establish brightness stability system：Backlight sensor is installed in the display, which passes
Sensor obtains the return value of display backlight in real time, and the return value and the brightness of display actual displayed are there are correspondence, each
Actual displayed brightness corresponds to a backlight sensor target return value.For certain luminance, compare backlight sensor and return in real time
Return value and the brightness for target return value, if return value is more than target return value in real time, the PWM value of reduction backlight, if
Real-time return value is more than target return value, then increases the PWM value of backlight, if return value is equal to target return value in real time, terminates
PWM is adjusted, and PWM value is stored in register；
Step 2：It will be set as F per the corresponding backlight sensor initial target return value of single order brightness1,F2, F3, F4, F5；
Step 3：Refering to what is shown in Fig. 2, display brightness is calibrated stepwise：By taking the 1st grade of brightness as an example, display is allowed
Show white field picture, display brightness is adjusted to by a by the PWM value for adjusting backlight, obtain the display brightness lower back optical sensor
Real-time return value T1, by F1Replace with T1；
The present invention calibrates medical display per single order brightness, with reference to LCD backlight systems stabilisation, ensures
The uniformity and stability of display brightness, improves accuracy and the efficiency of diagnosis.
Certainly the above embodiments merely illustrate the technical concept and features of the present invention, and its object is to allow be familiar with technique
People can understand present disclosure and implement according to this, it is not intended to limit the scope of the present invention.It is all according to this hair
The equivalent transformation or modification that the Spirit Essence of bright main technical schemes is done, should be covered by the protection scope of the present invention.
Claims (1)
- A kind of 1. method of work of the multistage brightness stability system of real-time, it is characterised in that：Include the following stepsStep 1：Establish the multistage brightness stability system of real-time；Backlight sensor, the backlight sensor are installed in the display The return value of display backlight is obtained in real time, and there are correspondence, each reality with the brightness of display actual displayed for the return value Display brightness corresponds to a backlight sensor target return value, for certain luminance, compares the real-time return value of backlight sensor Target return value corresponding with the brightness, if return value is more than target return value in real time, reduces the PWM value of backlight, if in real time Return value is more than target return value, if the real-time return value of the PWM value for then increasing backlight is equal to target return value, terminates PWM tune Section, register is stored in by PWM value；Step 2：The corresponding target return value of every single order brightness is initialized；Step 3：Display brightness is calibrated stepwise：Brightness regulation exponent number is set as N, the corresponding target of the i-th rank of setting is bright Angle value is Li, for the i-th rank, allows display to show white field picture, is adjusted to display brightness by the PWM value for adjusting backlight Li, obtains the real-time return value Ti of the display brightness lower back optical sensor, and backlight sensor target return value is arranged to Ti.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510115494.2A CN104681007B (en) | 2015-03-16 | 2015-03-16 | A kind of method of work of the multistage brightness stability system of real-time |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510115494.2A CN104681007B (en) | 2015-03-16 | 2015-03-16 | A kind of method of work of the multistage brightness stability system of real-time |
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| CN104681007A CN104681007A (en) | 2015-06-03 |
| CN104681007B true CN104681007B (en) | 2018-05-01 |
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Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105096843A (en) * | 2015-08-19 | 2015-11-25 | 京东方科技集团股份有限公司 | Backlight source, adjustment method and adjustment device thereof and display device |
| CN106448569A (en) * | 2016-08-31 | 2017-02-22 | 德为显示科技股份有限公司 | Control apparatus of liquid crystal display |
| CN106793337B (en) * | 2017-01-23 | 2019-08-06 | 深圳创维－Rgb电子有限公司 | A circuit, method, device and controller for improving brightness of LED backlight |
| CN106940993B (en) | 2017-05-23 | 2019-02-05 | 京东方科技集团股份有限公司 | A kind of display bearing calibration and system |
| CN110890069B (en) * | 2018-09-07 | 2021-04-20 | 深圳市巨烽显示科技有限公司 | Display brightness adjusting method and device and display |
| CN110136656A (en) * | 2019-04-24 | 2019-08-16 | 昆山龙腾光电有限公司 | Backlight module and liquid crystal display device |
| CN111210763B (en) * | 2020-01-21 | 2020-12-29 | 卡莱特（深圳）云科技有限公司 | Gamma calibration method and device |
| CN113314081A (en) * | 2021-06-01 | 2021-08-27 | 南京德康光电科技有限公司 | Display device and method for gradual calibration and rapid and stable backlight brightness |
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| CN104200782A (en) * | 2014-09-10 | 2014-12-10 | 中航华东光电有限公司 | Method for stabilizing high backlight brightness of liquid crystal display |
| CN204204383U (en) * | 2014-11-30 | 2015-03-11 | 南京巨鲨显示科技有限公司 | There is the medical display of brightness and curve auto-calibration function |
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| US8588485B2 (en) * | 2008-11-25 | 2013-11-19 | Carestream Health, Inc. | Rendering for improved diagnostic image consistency |
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| CN104681007A (en) | 2015-06-03 |
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Effective date of registration: 20180308 Address after: 210036, block eight, building 01, 301 Hanzhoung Avenue, Gulou District, Jiangsu, Nanjing, Applicant after: Nanjing Jusha Display Technology Co., Ltd. Applicant after: NANJING JUSHA MEDICAL SCIENCE & TECHNOLOGY CO., LTD. Address before: 210029 Gulou District, Nanjing, Hanzhoung No. 301 Main Street, building eight, block A, 01, Applicant before: Nanjing Jusha Display Technology Co., Ltd. |
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