New Apple proposals may see the still active faces of Apple modify their images to avoid old-fashioned screen burns.
Apple is about as far away as possible from devices like the Macintosh SE / 2 and Macintosh IIfx of the last century, but it looks like it could be prone to a problem that plagues these and all computers with CRT screens. Apple wants to ensure that an image that stays on the screen for a long time does not damage the screen and seems to stay there forever.
“Electronic Devices With Display Burn-in Mitigation”, US Patent Application No. 20200218204, details the steps Apple has designed to avoid the problem. It is likely that at least some of them are already present in the Apple Series 5, if not earlier models, but this is the first time that solutions are presented.
“Running-in can occur when a static image is displayed on a screen for an extended period,” says the application. “It can cause uneven wear on the screen pixels. If you are not careful, the burn effects can lead to the creation of unwanted ghost images on a screen.”
In theory, this could affect iPhones or iPads that display the same application icons in the same place. However, these devices go to sleep when not in use and Apple is now able to display at least some items all the time, which greatly increases the risk of burns.
“A face image on the screen may contain face elements such as face hands, face clues, and complications,” says the app. “To reduce the risk of burns to the facial elements, the control circuits of the electronic device may impose burning constraints on the attributes of the facial elements, such as peak luminance constraints, dwell time constraints, color constraints. , constraints on the shape of each element, and constraints on the style of the elements. ”
“These constraints can help avoid situations in which static elements such as face cues create more break-in than dynamic elements such as face hands,” he continues.
The whole app is about how Apple can electronically alleviate the problem by balancing what it calls “dwell time”, the time a user actually spends looking at a screen and reducing the intensity of this display.
“[ face hands] are in motion and therefore do not linger for extended periods of time on a given pixel or set of pixels compared to more persistent facial features such as clues [and complications]”explains the application.” To reduce the risk of burns … control circuits can be configured to dynamically adjust locations … during operation. ”
Apple’s proposal is therefore to ask Apple to adjust the screen position of the key elements. It may be so subtle that it is not immediately obvious, but Apple plans “repeated interior and exterior radial movements” to “eliminate pixel wear”.
Detail of the patent application. hands are not a burn problem, but anything else could be
“If desired, the overall illustration of the face that is displayed on the screen (for example, hands, index fingers and / or other elements of the face) can be scaled,” continues the application. “For example, an illustration that is still active can be adjusted to 95% of its nominal size (100%) to help reduce the effects of afterglow.”
Unfortunately, nowhere in the patent application does he suggest giving us After Dark style screen savers for our Apple es.