The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Oct. 18, 2022
Filed:
Jun. 30, 2020
Applicant:
Lenovo Enterprise Solutions (Singapore) Pte. Ltd., Singapore, SG;
Inventors:
Keith M. Campbell, Cary, NC (US);
Christopher L. Wood, Chapel Hill, NC (US);
Connor B. Reed, Durham, NC (US);
Clifton E. Kerr, Morrisville, NC (US);
Assignee:
LENOVO ENTERPRISE SOLUTIONS (SINGAPORE) PTE. LTD., Singapore, SG;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G06F 1/20 (2006.01); H05K 7/20 (2006.01); H02P 27/04 (2016.01); H02P 27/08 (2006.01); H02P 29/024 (2016.01); H02P 29/028 (2016.01);
U.S. Cl.
CPC ...
G06F 1/206 (2013.01); H02P 27/04 (2013.01); H02P 27/08 (2013.01); H02P 29/024 (2013.01); H02P 29/028 (2013.01); H05K 7/20136 (2013.01); H05K 7/20209 (2013.01);
Abstract
Data exchange using fan unit signal lines is disclosed, including receiving a pulse width modulated (PWM) signal on a PWM signal line of a fan unit; detecting that a frequency of the PWM signal is outside a frequency range used to control a fan speed of a fan in the fan unit; selecting a data output based on the frequency of the PWM signal; and sending the data output on a tachometric signal line of the fan unit.