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:
Sep. 26, 2017
Filed:
Nov. 25, 2014
Dialog Semiconductor Inc., Campbell, CA (US);
John William Kesterson, Seaside, CA (US);
Yong Li, San Jose, CA (US);
Fuqiang Shi, Los Gatos, CA (US);
Dialog Semiconductor Inc., Campbell, CA (US);
Abstract
An apparatus comprises an output port to be connected to a load; a first input port to receive a first input signal; and a second input port coupled between the first input port and the output port, to receive a second input signal. The apparatus further comprises a coupling circuit to couple the second input signal to the output port and a frequency isolation circuit that has a frequency response to propagate the first input signal to the output port but prevent the second input signal from propagating to the first input port. The apparatus also comprises a detection circuit to determine a voltage of an output signal at the output port, the output signal having a first amplitude range with a load absent at the output port and having a second amplitude range lower than the first amplitude range with the load present at the output port.