US 12,584,786 B2Granted

Detecting vibration of a cable of an information handling system

AssigneeDell Products L.P.

InventorsBhyrav M. Mutnury, Sandor Tibor Farkas

Life of this patent

Estimating the term…

Loading patent…

Abstract

Detecting vibration of a cable including providing a clock signal along a cable, the clock signal is modulated along the cable by a vibration frequency to generate a modulated signal along the cable that includes upper and lower sideband frequencies with respect a frequency of the clock signal; providing the modulated signal to a multiplexer, a positive polarity signal of the modulated signal is provided to a first input line of the multiplexer and a negative polarity signal of the modulated signal is provided to a second input line of the multiplexer; selecting one of the positive polarity signal and the negative polarity signal based on a state of a reference signal; demodulating, based on the selecting, the modulated signal to generate a demodulated signal, including generating the vibration frequency at a baseband of the demodulated signal; filtering the demodulated signal to obtain filtered signal including only the vibration frequency.

Claims18

Dependent claims

A method of detecting vibration of a cable of an information handling system, the method including:

providing a clock signal along a cable, wherein the clock signal is modulated along the cable by a vibration frequency to generate a modulated signal along the cable that includes upper and lower sideband frequencies with respect a frequency of the clock signal;
providing the modulated signal to a multiplexer, wherein a positive polarity signal of the modulated signal is provided to a first input line of the multiplexer and a negative polarity signal of the modulated signal is provided to a second input line of the multiplexer;
selecting one of the positive polarity signal and the negative polarity signal based on a state of a reference signal, including:
when it is determined that the state of the reference signal is high, selecting only the negative polarity signal;
when it is determined that the state of the reference signal is low, selecting only the positive polarity signal, wherein the low reference signal is less than the high reference signal;
demodulating, based on the selecting, the modulated signal to generate a demodulated signal, including generating the vibration frequency at a baseband of the demodulated signal;
and
filtering the demodulated signal to obtain a filtered signal including only the vibration frequency.

5 more elements

An information handling system, including:

a cable;
a clock driver configured to provide a clock signal along the cable, wherein the clock signal is modulated along the cable by a vibration frequency to generate a modulated signal along the cable that includes upper and lower sideband frequencies with respect a frequency of the clock signal;
a multiplexer configured to:
receive the modulated signal, including receiving a positive polarity signal of the modulated signal at a first input line of the multiplexer and a negative polarity signal of the modulated signal at a second input line of the multiplexer,
select one of the positive polarity signal and the negative polarity signal based on a state of a reference signal, including:
when it is determined that the state of the reference signal is high, selecting only the negative polarity signal;
when it is determined that the state of the reference signal is low, selecting only the positive polarity signal, wherein the low reference signal is less than the high reference signal;
demodulate, based in the selecting, the modulated signal to generate a demodulated signal, including generating the vibration frequency at a baseband of the demodulated signal;
a low pass filter configured to filter the demodulated signal to obtain a filtered signal including only the vibration frequency.

6 more elements

Dependencies are inferred from the claim text.