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:
Mar. 20, 2018
Filed:
Mar. 31, 2017
Lyra Semiconductor Incorporated, Hsinchu County, TW;
Hung-Chang Tsao, Hsinchu County, TW;
Chia-Te Hsu, Hsinchu County, TW;
LYRA SEMICONDUCTOR INCORPORATED, Hsinchu County, TW;
Abstract
A signal processing system and a method thereof are disclosed, using a differential amplifier to extract the sensed signals associated with the headphones wear status generated by the diaphragm of the headphone and push back to the sense ADC for digitization. Because the differential amplifier is non-ideal, certain residual music signal will exist. To exclude residual music signal for subsequent processing, a temporary memory is provided to match and synchronize the original playback signal retainment and the round-trip delay of external signal. The round-trip delay is computed to adjust the depth and clock speed of the buffer/FIFO of the temporary memory to, after synchronized with the total external propagation delay, eliminate residual music signal in a function block in order to separate the sense signal of the headphone driver unit diaphragm displacement and use the extracted sense signal for subsequent analysis and auto-control and/or signal compensation reference source.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile