CN110910855A - Automobile data recorder display screen brightness control method and device - Google Patents
Automobile data recorder display screen brightness control method and device Download PDFInfo
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- CN110910855A CN110910855A CN201911273334.5A CN201911273334A CN110910855A CN 110910855 A CN110910855 A CN 110910855A CN 201911273334 A CN201911273334 A CN 201911273334A CN 110910855 A CN110910855 A CN 110910855A
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- 238000000034 method Methods 0.000 title claims abstract description 32
- 238000012545 processing Methods 0.000 claims description 6
- 239000003990 capacitor Substances 0.000 claims description 5
- 230000000694 effects Effects 0.000 abstract description 9
- 238000010586 diagram Methods 0.000 description 4
- 206010039203 Road traffic accident Diseases 0.000 description 3
- 230000006870 function Effects 0.000 description 3
- 206010070834 Sensitisation Diseases 0.000 description 2
- 238000001914 filtration Methods 0.000 description 2
- 230000008313 sensitization Effects 0.000 description 2
- 238000004458 analytical method Methods 0.000 description 1
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G5/00—Control arrangements or circuits for visual indicators common to cathode-ray tube indicators and other visual indicators
- G09G5/10—Intensity circuits
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G2320/00—Control of display operating conditions
- G09G2320/06—Adjustment of display parameters
- G09G2320/0626—Adjustment of display parameters for control of overall brightness
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Abstract
The invention discloses a method and a device for controlling the brightness of a display screen of a vehicle event data recorder, wherein the method comprises the following steps: obtaining the brightness of the external environment; and adjusting the brightness of a display screen of the automobile data recorder according to the brightness of the environment light. According to the brightness control method for the display screen of the automobile data recorder, the brightness of the display screen of the automobile data recorder in an automobile is controlled to be correspondingly adjusted according to the brightness of the external environment through automatically detecting the brightness of the external environment, the problems that the normal driving of a driver is affected due to manual adjustment when the brightness of the display screen of the automobile data recorder is not suitable for the driver in different time periods or different external brightness are solved, and the situation that the eyes of the driver are damaged or the brightness is too low to be normally checked when the brightness of the display screen of the automobile data recorder is not suitable is solved, so that the display screen is automatically adjusted to be suitable, and the effect of safe driving of the driver is ensured.
Description
Technical Field
The embodiment of the invention relates to the technology of automobile data recorders, in particular to a method and a device for controlling the brightness of a display screen of an automobile data recorder.
Background
With the development of socio-economy, modern vehicles play more and more important roles, but the increasing number of traffic accidents also bring casualties and property loss which are difficult to count to people. In order to accurately restore the true phase of an accident, a vehicle event data recorder is born. The automobile data recorder can not only suppress traffic violation and restrict bad driving habits of drivers, but also effectively prevent road traffic accidents, provide scientific and faithful original video data for analysis and processing of the accidents by law enforcement personnel, and play an important role in traffic transportation management. The existing automobile data recorder is on the rise, the market demand is expanded, under the background of teaching efficiency and pursuing law, the dispute of the traffic accident is also assisted by an electronic product, a lot of evidences are shown, and the responsibility is clear. Most of the existing products have strong functions of high pixel, seamless circular video recording, collision instant recording locking function, ultra-wide-angle lens, parking monitoring and the like, and the practicability is very strong.
Due to the large characteristic of the display screen of the automobile data recorder, images in the area behind the automobile need to be displayed on the display screen in real time to replace a traditional physical reflector to see the view behind the automobile, so that the display screen needs to be always bright when the automobile is driven, and very high brightness is needed in the daytime to ensure the viewing effect of the rear images.
Disclosure of Invention
The invention provides a method and a device for controlling the brightness of a display screen of a driving recorder, which are used for automatically adjusting the display screen to the proper brightness and ensuring the effect of safe driving of a driver.
In a first aspect, an embodiment of the present invention provides a method for controlling brightness of a display screen of a vehicle event data recorder, including:
obtaining the brightness of the external environment;
and adjusting the brightness of a display screen of the automobile data recorder according to the brightness of the environment light.
Optionally, adjusting the brightness of the display screen of the automobile data recorder according to the brightness of the environment light includes:
adjusting the input voltage according to the ambient light brightness;
and adjusting the brightness of the display screen of the automobile data recorder according to the input voltage.
Optionally, the adjusting the brightness of the display screen of the automobile data recorder according to the input voltage includes:
generating a brightness adjusting signal according to the input voltage;
and adjusting the brightness of the display screen of the automobile data recorder according to the brightness adjusting signal.
Optionally, before adjusting the brightness of the display screen of the automobile data recorder according to the brightness of the environment light, the method includes:
setting a plurality of time periods and preset brightness corresponding to the time periods;
acquiring the current time of the system;
and determining the time period of the current time of the system and the preset brightness corresponding to the time period.
Optionally, adjusting the brightness of the display screen of the automobile data recorder according to the brightness of the environment light includes:
and adjusting the brightness of the display screen of the automobile data recorder according to the external environment light brightness and the preset brightness corresponding to the time period.
In a second aspect, an embodiment of the present invention further provides a device for controlling brightness of a display screen of a driving recorder, including:
the photosensitive module is used for identifying the brightness of external environment light and adjusting the resistance value of the photosensitive module according to the brightness of the external environment light;
the control module is connected with the photosensitive module and used for sending out an adjusting signal according to the resistance value of the photosensitive module;
and the driving module is connected with the control module and used for controlling the brightness of the display screen of the automobile data recorder according to the adjusting signal.
Optionally, the device further includes a power input VCC, connected to the light sensing module, for providing an output voltage.
Optionally, the photosensitive module includes resistance R1, resistance R2, light sensor RT1 and electric capacity C1, resistance R1's first end is connected to power input VCC, resistance R1's second end is connected to light sensor RT 1's first end, light sensor RT 1's second end is connected to the control module, resistance R2's first end is connected to light sensor RT 1's second end, resistance R2's second end ground connection, electric capacity C1's first end is connected to light sensor RT 1's second end, electric capacity C1's second end is connected to electric capacity R2's second end.
Optionally, the control module includes a central processing unit.
Optionally, the driving module comprises a driving module of a display screen of the automobile data recorder.
The invention discloses a method and a device for controlling the brightness of a display screen of a vehicle event data recorder, wherein the method comprises the following steps: obtaining the brightness of the external environment; and adjusting the brightness of a display screen of the automobile data recorder according to the brightness of the environment light. According to the brightness control method for the display screen of the automobile data recorder, the brightness of the display screen of the automobile data recorder in an automobile is controlled to be correspondingly adjusted according to the brightness of the external environment through automatically detecting the brightness of the external environment, the problems that the normal driving of a driver is affected due to manual adjustment when the brightness of the display screen of the automobile data recorder is not suitable for the driver in different time periods or different external brightness are solved, and the situation that the eyes of the driver are damaged or the brightness is too low to be normally checked when the brightness of the display screen of the automobile data recorder is not suitable is solved, so that the display screen is automatically adjusted to be suitable, and the effect of safe driving of the driver is ensured.
Drawings
Fig. 1 is a flowchart of a method for controlling brightness of a display screen of an automobile data recorder according to an embodiment of the present invention;
fig. 2 is a flowchart of a brightness control method for a display screen of an automobile data recorder according to a second embodiment of the present invention;
fig. 3 is a relationship diagram of a module of a luminance control device of a display screen of a vehicle event data recorder according to a third embodiment of the present invention;
fig. 4 is a circuit diagram of a luminance control device of a display screen of a car recorder according to a third embodiment of the present invention.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention. It should be further noted that, for the convenience of description, only some of the structures related to the present invention are shown in the drawings, not all of the structures.
Before discussing exemplary embodiments in more detail, it should be noted that some exemplary embodiments are described as processes or methods depicted as flowcharts. Although a flowchart may describe the steps as a sequential process, many of the steps can be performed in parallel, concurrently or simultaneously. In addition, the order of the steps may be rearranged. A process may be terminated when its operations are completed, but may have additional steps not included in the figure. A process may correspond to a method, a function, a procedure, a subroutine, a subprogram, etc.
Furthermore, the terms "first," "second," and the like may be used herein to describe various orientations, actions, steps, elements, or the like, but the orientations, actions, steps, or elements are not limited by these terms. These terms are only used to distinguish one direction, action, step or element from another direction, action, step or element. For example, a first module may be termed a second module, and, similarly, a second module may be termed a first module, without departing from the scope of the present application. The first module and the second module are both modules, but they are not the same module. The terms "first", "second", etc. are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.
Example one
Fig. 1 is a flowchart of a method for controlling brightness of a display screen of an automobile data recorder according to an embodiment of the present invention, where the embodiment is applicable to a situation where brightness of a display screen of an automobile data recorder is automatically adjusted in different environments, and specifically includes the following steps:
and step 100, obtaining the brightness of the external environment.
In this embodiment, a light sensor is disposed on a vehicle traveling data recorder of an automobile, the light sensor is composed of two components, i.e., a light projector and a light receiver, the light projector focuses light from a lens, and transmits the light to the lens of the light receiver and then to a receiving sensor, and the receiving sensor converts received light signals into electrical signals, which can further perform various switching and control actions. This light sensor is connected to vehicle event data recorder internal control circuit, through the external environment luminance of real-time detection, informs vehicle event data recorder internal control circuit to carry out vehicle event data recorder display screen brightness control, and the control display screen reaches suitable luminance.
And step 110, adjusting the brightness of a display screen of the automobile data recorder according to the brightness of the environment light.
In this embodiment, vehicle event data recorder internal control circuit receives the signal of telecommunication that light sensor sent and adjusts vehicle event data recorder display screen luminance according to the signal of telecommunication. Illustratively, when the vehicle is driven in the evening or at night, the light sensor detects that the brightness of the external environment is low, namely, a control signal is sent out to properly reduce the brightness of the display screen of the automobile data recorder through the internal control circuit of the automobile data recorder, so that the driver is ensured not to stab eyes due to overhigh brightness when watching the display screen of the automobile data recorder. When driving the vehicle daytime, light sensor detects outside environment luminance higher this moment, sends control signal promptly and suitably increases driving record appearance display screen luminance through driving record appearance internal control circuit, guarantees that the driver can normally watch the driving record appearance display screen, can not cause inadequately because of display screen luminance and watch the difficulty. In this embodiment, the degree of brightness adjustment according to the external ambient light brightness can be numerically controlled according to the driver's own condition, for example, some drivers prefer to keep high brightness all the time when watching the display screen.
In this embodiment, step 110 may further include step 111 and step 112, specifically:
and step 111, adjusting the input voltage according to the ambient light brightness.
In this embodiment, after light sensor detected the ambient light brightness, changed the signal of telecommunication voltage size of input through adjusting self resistance value, vehicle event data recorder's control circuit is through detecting the signal of telecommunication size of input, judges to need to increase display screen luminance or turn down display screen luminance this moment.
And 112, adjusting the brightness of the display screen of the automobile data recorder according to the input voltage. The adjusting the brightness of the display screen of the automobile data recorder according to the input voltage comprises the following steps: generating a brightness adjusting signal according to the input voltage; and adjusting the brightness of the display screen of the automobile data recorder according to the brightness adjusting signal.
In this embodiment, a control circuit of the automobile data recorder generates a brightness adjustment signal according to the magnitude of the voltage of the input electric signal, and adjusts the brightness of a display screen of the automobile data recorder according to the brightness adjustment signal. Illustratively, the higher the ambient light brightness detected by the light sensor is, the smaller the self resistance value is, the greater the voltage of the input electric signal is, and the control circuit detects the greater the voltage of the electric signal to generate a brightness adjusting signal to control the brightness of the display screen to be increased; the lower the ambient light brightness that light sensor detected, self resistance value is bigger, and the signal voltage of telecommunication of input can diminish, thereby control circuit produces the luminance control signal control through detecting signal voltage of telecommunication and transfers down display screen luminance.
The embodiment provides a method for controlling the brightness of a display screen of a vehicle event data recorder, which comprises the following steps: obtaining the brightness of the external environment; and adjusting the brightness of a display screen of the automobile data recorder according to the brightness of the environment light. According to the brightness control method for the display screen of the automobile data recorder, the brightness of the display screen of the automobile data recorder in an automobile is controlled to be correspondingly adjusted according to the brightness of the external environment through automatically detecting the brightness of the external environment, the problems that the normal driving of a driver is affected due to manual adjustment when the brightness of the display screen of the automobile data recorder is not suitable for the driver in different time periods or different external brightness are solved, and the situation that the eyes of the driver are damaged or the brightness is too low to be normally checked when the brightness of the display screen of the automobile data recorder is not suitable is solved, so that the display screen is automatically adjusted to be suitable, and the effect of safe driving of the driver is ensured.
Example two
Fig. 2 is a flowchart of a method for controlling brightness of a display screen of an automobile data recorder according to a second embodiment of the present invention, where this embodiment is described in more detail on the basis of the second embodiment, and this embodiment is applicable to a case where brightness of a display screen of an automobile data recorder is automatically adjusted in different environments, and specifically includes the following steps:
and 200, obtaining the brightness of the external environment.
In this embodiment, preset brightness corresponding to a plurality of time periods is preset, and the brightness of the display screen of the automobile data recorder is controlled according to the preset brightness. Illustratively, 24 hours a day is split into 2 time periods, a first time period from 6 am to 6 pm and a second time period from 6 pm to the next day and 6 am. The automobile data recorder display screen brightness corresponding to the first time period is higher, and the automobile data recorder display screen brightness corresponding to the second time period is lower. In this embodiment, the number of the time periods can be adjusted by a user according to actual conditions, and the more the time periods are divided, the more the brightness of the display screen of the automobile data recorder is adjusted, which is not limited in this embodiment.
And step 220, acquiring the current time of the system.
And step 230, determining the time period of the current time of the system and the preset brightness corresponding to the time period.
In this embodiment, the brightness of the display screen of the current automobile data recorder is determined according to the current time of the system and the time period to which the current time belongs. The system automatically detects the time change, and if the corresponding time period is changed, the automobile data recorder control circuit controls the brightness of the display screen to be adjusted to the preset brightness corresponding to the current time period. The effect of automatically adjusting the brightness of the display screen of the automobile data recorder at different time periods can be achieved by setting the preset brightness.
And 240, adjusting the brightness of the display screen of the automobile data recorder according to the brightness of the external environment and the preset brightness corresponding to the time period.
In this embodiment, the brightness of the display screen of the automobile data recorder is adjusted through the current ambient light brightness and the preset brightness corresponding to the corresponding time period, so that the adjustment times can be saved, and the brightness of the current display screen can be adjusted in time under some emergency conditions (such as when an automobile passes through a tunnel, etc.) to ensure that a driver can watch the automobile normally.
The embodiment provides a method for controlling the brightness of a display screen of a vehicle event data recorder, which comprises the following steps: obtaining the brightness of the external environment; setting a plurality of time periods and preset brightness corresponding to the time periods; acquiring the current time of the system; determining the time period of the current time of the system and the preset brightness corresponding to the time period; and adjusting the brightness of the display screen of the automobile data recorder according to the ambient light brightness and the preset brightness corresponding to the time period. According to the brightness control method for the display screen of the automobile data recorder, the brightness of the display screen of the automobile data recorder in an automobile is controlled to be correspondingly adjusted according to the brightness of the external environment through automatically detecting the brightness of the external environment, the problems that the normal driving of a driver is affected due to manual adjustment when the brightness of the display screen of the automobile data recorder is not suitable for the driver in different time periods or different external brightness are solved, and the situation that the eyes of the driver are damaged or the brightness is too low to be normally checked when the brightness of the display screen of the automobile data recorder is not suitable is solved, so that the display screen is automatically adjusted to be suitable, and the effect of safe driving of the driver is ensured.
EXAMPLE III
Fig. 3 is a relationship diagram of a module of a brightness control device for a display screen of an automobile data recorder provided in a third embodiment of the present invention, and fig. 4 is a circuit diagram of a brightness control device for a display screen of an automobile data recorder provided in a third embodiment of the present invention, where this embodiment is applicable to a situation where the brightness of a display screen of an automobile data recorder is automatically adjusted in different environments, and includes: sensitization module 1, control module 2, drive module 3 and power input VCC.
Referring to fig. 3 and 4, in particular:
the photosensitive module 1 is used for identifying the brightness of external environment light and adjusting the resistance value of the photosensitive module according to the brightness of the external environment light. Photosensitive module 1 includes resistance R1, resistance R2, light sensor RT1 and electric capacity C1, resistance R1's first end is connected to power input VCC, resistance R1's second end is connected to light sensor RT 1's first end, light sensor RT 1's second end is connected to control module 2, resistance R2's first end is connected to light sensor RT 1's second end, resistance R2's second end ground connection, electric capacity C1's first end is connected to light sensor RT 1's second end, electric capacity C1's second end is connected to electric capacity R2's second end.
In this embodiment, the resistor R1 is used for current limiting, the power input VCC provides voltage to the light sensor RT1 after passing through the resistor R1, and is connected to the control module 2 after passing through the light sensor RT 1. The light sensor RT1 and the resistor R2 form a voltage division circuit, the capacitor C2 plays a role in filtering, voltage is divided by the light sensor RT1 and the resistor R2, noise filtering is carried out on the voltage through the capacitor C2, and then the voltage is transmitted to the control module 2. When the brightness of the external environment is bright, the resistance of the light sensor RT1 is reduced, the current flowing through the light sensor RT1 is increased, the resistance of the voltage divider resistor R2 is unchanged, the voltage detected by the control module 2 is increased, and the driving module 3 is notified to automatically increase the brightness of the display screen. When the external environment light brightness is darker, the resistance value of the light sensor RT1 becomes larger, the current flowing through the light sensor RT1 becomes smaller, the resistance value of the voltage dividing resistor R2 does not change, the voltage detected by the control module 2 is reduced, and the driving module 3 is notified to automatically reduce the brightness of the display screen.
And the control module 2 is connected with the photosensitive module 1 and used for sending out an adjusting signal according to the resistance value of the photosensitive module 1. The control module 2 comprises a central processing unit.
In this embodiment, the control module 2 includes a central processing unit, the central processing unit includes a control chip and a control circuit thereof, and the specific model of the control chip is selected according to an actual situation, which is not limited in this embodiment. The ADC interface of the control chip is connected to the second end of the light sensor RT1 in the photosensitive module 1, and is used for detecting voltage change caused by resistance change of the light sensor RT1 and generating an adjusting signal according to the voltage change.
And the driving module 3 is connected with the control module 2 and used for controlling the brightness of the display screen of the automobile data recorder according to the adjusting signal. And the driving module 3 comprises a driving module of a display screen of the automobile data recorder.
In this embodiment, drive module 3 includes vehicle event data recorder display screen drive module, and general vehicle event data recorder display screen drive module sets up among the vehicle event data recorder, in this embodiment, has increased 1 control scheme of extra sensitization module and has been connected to vehicle event data recorder display screen drive module. Automobile data recorder display screen drive module can adjust automobile data recorder display screen luminance according to the regulation signal immediately after receiving drive module 3's regulation signal, has the effect of promptness.
And the power input end VCC is connected with the photosensitive module 1 and is used for providing output voltage.
In this embodiment, the power input terminal VCC is connected to an external voltage input for providing a normal operating voltage for the display screen brightness control device of the automobile data recorder.
This embodiment provides a vehicle event data recorder display screen brightness control device, and the device includes: the photosensitive module is used for identifying the brightness of external environment light and adjusting the resistance value of the photosensitive module according to the brightness of the external environment light; the control module is connected with the photosensitive module and used for sending out an adjusting signal according to the resistance value of the photosensitive module; and the driving module is connected with the control module and used for controlling the brightness of the display screen of the automobile data recorder according to the adjusting signal. According to the brightness control device for the display screen of the automobile data recorder, the brightness of the display screen of the automobile data recorder in an automobile is controlled to be correspondingly adjusted according to the brightness of the external environment through automatically detecting the brightness of the external environment, the problems that the normal driving of a driver is affected due to manual adjustment when the brightness of the display screen of the automobile data recorder is not suitable for the driver in different time periods or different external brightness are solved, the situation that the eyes of the driver are damaged or the brightness is too low to be normally checked when the brightness of the display screen of the automobile data recorder is not suitable is solved, the display screen is automatically adjusted to be suitable, and the effect of safe driving of the driver is ensured.
Claims (10)
1. A method for controlling the brightness of a display screen of a vehicle event data recorder is characterized by comprising the following steps:
obtaining the brightness of the external environment;
and adjusting the brightness of a display screen of the automobile data recorder according to the brightness of the environment light.
2. The method for controlling the brightness of the display screen of the automobile data recorder according to claim 1, wherein the adjusting the brightness of the display screen of the automobile data recorder according to the brightness of the environment light comprises:
adjusting the input voltage according to the ambient light brightness;
and adjusting the brightness of the display screen of the automobile data recorder according to the input voltage.
3. The method for controlling the brightness of the display screen of the automobile data recorder according to claim 2, wherein the adjusting the brightness of the display screen of the automobile data recorder according to the input voltage comprises:
generating a brightness adjusting signal according to the input voltage;
and adjusting the brightness of the display screen of the automobile data recorder according to the brightness adjusting signal.
4. The method for controlling the brightness of the display screen of the automobile data recorder according to claim 1, wherein the adjusting the brightness of the display screen of the automobile data recorder according to the brightness of the environment comprises:
setting a plurality of time periods and preset brightness corresponding to the time periods;
acquiring the current time of the system;
and determining the time period of the current time of the system and the preset brightness corresponding to the time period.
5. The method for controlling the brightness of the display screen of the automobile data recorder according to claim 4, wherein the adjusting the brightness of the display screen of the automobile data recorder according to the brightness of the external environment light comprises:
and adjusting the brightness of the display screen of the automobile data recorder according to the ambient light brightness and the preset brightness corresponding to the time period.
6. The utility model provides a vehicle event data recorder display screen brightness control device which characterized in that includes:
the photosensitive module is used for identifying the brightness of external environment light and adjusting the resistance value of the photosensitive module according to the brightness of the external environment light;
the control module is connected with the photosensitive module and used for sending out an adjusting signal according to the resistance value of the photosensitive module;
and the driving module is connected with the control module and used for controlling the brightness of the display screen of the automobile data recorder according to the adjusting signal.
7. The device for controlling the brightness of the display screen of the automobile data recorder as claimed in claim 6, further comprising a power input terminal VCC connected to the light sensing module for providing an output voltage.
8. The device as claimed in claim 7, wherein the light sensing module comprises a resistor R1, a resistor R2, a light sensor RT1 and a capacitor C1, a first end of the resistor R1 is connected to the power input VCC, a second end of the resistor R1 is connected to a first end of the light sensor RT1, a second end of the light sensor RT1 is connected to the control module, a first end of the resistor R2 is connected to a second end of the light sensor RT1, a second end of the resistor R2 is grounded, a first end of the capacitor C1 is connected to the second end of the light sensor RT1, and a second end of the capacitor C1 is connected to the second end of the resistor R2.
9. The device for controlling the brightness of the display screen of the automobile data recorder as claimed in claim 6, wherein the control module comprises a central processing unit.
10. The device for controlling the brightness of the display screen of the automobile data recorder of claim 6, wherein the driving module comprises a driving module of the display screen of the automobile data recorder.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201911273334.5A CN110910855A (en) | 2019-12-12 | 2019-12-12 | Automobile data recorder display screen brightness control method and device |
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| CN201911273334.5A CN110910855A (en) | 2019-12-12 | 2019-12-12 | Automobile data recorder display screen brightness control method and device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112161242A (en) * | 2020-10-26 | 2021-01-01 | 青岛欧升灯具有限公司 | Solar LED lamp device capable of identifying light change and displaying brightness |
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