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Screen Flicker: What is it and how to disable display flickering on Huawei EMUI software system

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Aside from the entry-level phones, most of the smartphone company uses OLED panels to provide a high and more durable viewing experience that worth their money. However, even a high-priced, OLED screen-equipped phone could bring you headaches or eye strain.

How?

There could be a number of reasons for these head and eye-related issues found in a smartphone’s display including high brightness, blue light, and incorrect colors. There’s one more thing you need to about the display issue called Screen Flickering.

What is Screen Flickering:

It’s a bit of a technical description, so bear with me here.

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Flicker is a quick oscillation of light output between on and off; it is measured in hertz (Hz) to quantify the frequency at which the oscillation occurs. While we may not be consciously aware of the flicker phenomenon, it’s important to understand that our eyes still physically respond to it — that is, our irises expand and contract in response to these changes in brightness.

This involuntary physiological response can certainly explain why we may have a headache and particularly why our eyes can feel tired after looking at a display for an extended period of time — they have been working hard! (This is especially true when looking at a display in dark ambient conditions, such as reading in bed with the lights turned off, for reasons we’ll check on this more below.)

What Cause Flicker:

It is unfortunate that flicker on their displays (especially OLED displays) is still an issue for many people. That’s not the issue, but why do they flicker?

Let’s take a dig at Flicker:

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Smartphones either come with LCD (liquid crystal display) or OLED (organic light-emitting diode) technology. LCDs don’t emit their own light, rather, they are back-illuminated by a strip of LEDs whose light intensity is quite powerful so as to compensate for the brightness drop due to the low transmission rate of the LCD panel (caused mainly by the RGB color filter). By contrast, in an OLED display, every pixel is itself an OLED that produces its own light.

Both LCDs and OLED displays are composed of light-emitting diodes, therefore, a diode’s intrinsic physical properties, cannot be dimmed by changing the intensity of the current (mA) without changing the color of the light.

How manufacturers dim Displays?

According to DXOMARK, Using a technique called pulse-width modulation (PWM), which is responsible for turning the diodes off and on at varying rates. Because, we normally should not be able to see this switching between off and on (in other words, flickering!), it’s a trick for our brains that precise that the screen as simply dimmer overalls (a phenomenon is known as the “brain averaging effect”).

The dimming depends on how long the diodes are off versus how long they are on, the longer they’re off, the dimmer the screen will appear.

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So both LCDs and OLED displays power their light sources differently, but both technologies are subject to flicker effect; however, it is usually more noticeable on OLED displays than on LCDs.

For one thing, OLED displays and LCDs show PWM at different frequency ranges — the PWM of OLED displays range from 50 to 500 Hz, whereas the PWM of LCDs starts at around 1000 Hz or higher. Second, as the human eye may experience flicker sensitivity up to about 250 Hz (at least for most people), it should come as no surprise that OLED displays are more likely to cause eyestrain than LCDs.

Huawei EMUI 11:

These same issues are also presented in high-end Huawei devices and with recent versions of EMUI, Huawei has sent a new feature called flicker reduction to reduce the screen flickering.

This feature will reduce the number of your screen flickers and may also affect its color and brightness but one thing know that it also consumes power.

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  1. Open Settings
  2. Display & brightness
  3. Eye comfort, then enable or disable Flicker reduction

Yash is a graduate of computer science and followed his way into journalism, he is interested in various subjects related to technologies and politics. Yash likes to listen classical songs and has a huge library of classical mixes.

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Huawei launched complete smart gas station solutions

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Huawei gas station solutions

Huawei has released its new smart solutions for the gas station that are very convenient for the users and can save time. These Huawei gas station solutions can be helpful in refueling, making payment easier, large screen display, and more.

With the help of this, the smartphone will display the owner’s detail including the fuel dispenser, and the gasoline model. Once the refining is done, the owners don’t need to get out of the car of payment.

Just select the payment method from the list that includes cash, fuel card, bank card, WeChat, Alipay, and other methods by tapping on the smartphone screen. Also, the system will automatically pay according to the amount of refueling, and the owner can issue an electronic invoice in the App or Mini Program (for registered users).

In addition to this, it automatically applies the latest discounts available on some non-fuel products, as well as the customized one-person-a-car precision push customized for each owner, which will also appear here.

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Huawei gas stations solution

Huawei Atlas 500 Smart Station and SDC software-defined camera edge bring smart brains to gas stations and play the role of “smart sentry”. It can accurately collect and identify all the specific information of inbound vehicles, including license plate, vehicle logo, model, color, and more.

It can perform intelligent analysis, accurate “vehicle-lane-fuel gun” to realize automation correlates closely regarding refueling and payment.

In the smart gas station built by Huawei, if the car owner is a registered member vehicle then the smart big screen will display the member’s basic information and fueling habits, including fuel product, amount, etc., and automatically allocate available fuel guns. If the fueler is busy, the car owner can also pick up the gun and refuel without waiting. The Huawei gas station solution surely makes refueling with easily for consumers.

(Source: ithome)

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Huawei gets approval for two communication technologies for vehicles

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Huawei Arc Fox Smart Car

On November 3, Huawei has received approval for the two-communication technologies and both of these can be used in the fields of Internet of Vehicles, autonomous driving, and more. These patents were published in China.

The Huawei patent was published with announcement number CN113746606A the first patent that provides a vehicles communication method and device for V2X, intelligent networked vehicles, intelligent driving, assisted driving, and other fields. It can solve the current technical problem of the lack of SL TCI logo indication.

While the patent with CN113747577A provides a communication method and device that can be applied to D2D or Internet of Vehicles, such as V2X, LTE-V, and more. Additionally, it can be used in fields such as smart driving and smart connected vehicles.  This patent facilitates device equipment to exclude resources that have been reserved by other device equipment as much as possible to reduce transmission interference.

Huawei vehicles communication

Huawei patent for detecting automatic driving system:

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On the same day – November 3, Huawei also published a patent in the field of automobile technology entitled with detecting automatic driving systems with announcement number CN113741374.

The patent technology can also detect the failure reason of the automatic driving system, and use the detected automatic driving system to control the driving of the vehicle. The technical solution proposed in this application helps to improve the overall safety of the vehicle.

(Via)

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Huawei patents two way charging technology for electric vehicles

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Huawei electric vehicles charging

In April 2020, Huawei filed a patent for charging and discharging switching device, method, as well as a two-way charging system for electric vehicles. Now, as per the China Intellectual Property database, this patent was approved on November 30, 2021.

However, the Huawei two-way charging system patent for electric vehicles was published with announcement number CN112638700B in China. At present, two-way charging technology has been more and more widely used in the field of new electric vehicles.

Huawei electric vehicle charging

The electric vehicles launching with the support of two-way charging can bring many conveniences to users. In the new upcoming electric vehicles, the power tools and provide users with home appliances, power supplies, etc.

Accoriding to the patent summary, the patent mainly relates to a charging and discharging switching device, a method, and a two-way charging system. The charging and discharging switching device mainly includes:

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  • A first switch, a second switch, a switching power supply, and a control unit.
  • The two ends of the first switch are used to connect the power supply device, the load device.
  • The first end of the second switch and the switching power supply, and the second end of the second switch is used to connect the new energy vehicle.

Huawei electric vehicle charging

(Via – ithome)

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