US 12,457,714 B2
Fan speed control for high tonality avoidance
Gregory Allen Nielsen, Kirkland, WA (US); Benjamin Francis Walker, Vancouver (CA); Jani Samuli Kuivalainen, Duvall, WA (US); Sneha Rajeev Sondur, Seattle, WA (US); and Ergo Esken, Miiduranna (EE)
Assigned to MICROSOFT TECHNOLOGY LICENSING, LLC, Redmond, WA (US)
Filed by Microsoft Technology Licensing, LLC, Redmond, WA (US)
Filed on Dec. 5, 2022, as Appl. No. 18/061,704.
Prior Publication US 2024/0188257 A1, Jun. 6, 2024
Int. Cl. H05K 7/20 (2006.01); G06F 1/20 (2006.01)
CPC H05K 7/20836 (2013.01) [G06F 1/206 (2013.01); H05K 7/20209 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A method for controlling a speed of a fan, the method comprising:
defining a first range of fan speeds associated with high tonality based on a first fan speed boundary value and a second fan speed boundary value;
defining a second range of fan speeds based on a third fan speed boundary value and a fourth fan speed boundary value, the third and fourth fan speed boundary values within the first range;
determining a first target fan speed;
determining that the first target fan speed is inside the first range;
transmitting a first fan speed control signal to the fan to maintain the speed of the fan at the first fan speed boundary value;
determining a second target fan speed;
determining that the second target fan speed is between the second fan speed boundary value and a fan speed value in the second range; and
transmitting a second fan speed control signal to the fan to transition the speed of the fan from the first fan speed boundary value to the second fan speed boundary value.