According to a list recently published by the United States Trademark and Patent Office (USPTO), Apple has obtained a patent for the Apple Pencil, which not only allows it to support the iPhone, but also does not require charging.
This new patent is titled “Photo-Sensing Enabled Display For Stylus Detection” and indicates that the future Apple Pencil will not require charging or consume power, and users can still write and draw on the screen. , mainly relying on the screen to achieve the corresponding effect.
The patent application relates to an “optical stylus system” that primarily utilizes a screen to determine one or more of target or touch location, center point, hover distance, tilt angle, azimuth angle, and in some cases a stylus direction and rotation.
Apple specifically describes the stylus as passive, meaning it’s basically a stylus that requires no power. Instead, it reflects light back to the iPad or the device it’s used on, and the iPad does all the sensing optically.
Relevant screenshots attached as follows:
