US 12,314,488 B2
System and method for a quiet mouse scroll wheel with magnetic haptic encoder
Peng Lip Goh, Singapore (SG); and Deeder M. Aurongzeb, Austin, TX (US)
Assigned to DELL PRODUCTS LP, Round Rock, TX (US)
Filed by Dell Products, LP, Round Rock, TX (US)
Filed on Oct. 31, 2023, as Appl. No. 18/385,825.
Prior Publication US 2025/0138651 A1, May 1, 2025
Int. Cl. G06F 3/0354 (2013.01); G06F 3/01 (2006.01); G06F 3/0362 (2013.01)
CPC G06F 3/03543 (2013.01) [G06F 3/016 (2013.01); G06F 3/0362 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A mouse operatively couplable to an information handling system comprising:
a mouse microcontroller;
a mouse power management unit (PMU) to power the mouse microcontroller;
a scroll wheel to receive rotational input from a user;
a magnetic haptic encoder operatively coupled to the scroll wheel to detect an angular rotation of the scroll wheel via an angular motion encoding sensor to convert changes in the angular position of the scroll wheel due to rotation into a scrolling input signal to the mouse microcontroller;
the magnetic haptic encoder comprising:
a grooved ferromagnetic wheel having alternating wheel raised portions and wheel grooved portions operatively coupled to the scroll wheel;
an angular motion encoding sensor in a housing of the magnetic haptic encoder to encode rotation of a scroll wheel shaft; and
a magnet operatively coupled to the housing of the magnetic haptic encoder adjacent to a face of the grooved ferromagnetic wheel such that the face of the grooved ferromagnetic wheel rotates adjacent to the magnet in the housing along an outer edge of the grooved ferromagnetic wheel, wherein magnetic coupling of the magnet with the alternating wheel raised portions and wheel grooved portions of the grooved ferromagnetic wheel generates haptic feedback to the user when the user rotates the scroll wheel.