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. 20, 2022
Filed:
Apr. 10, 2020
Crestron Electronics Inc., Rockleigh, NJ (US);
Philip L. Kirkpatrick, Ridgewood, NJ (US);
Crestron Electronics Inc., Rockleigh, NJ (US);
Abstract
An innovative system for transmitting encrypted 1-bit audio over an Ethernet network comprises using an omni-directional micro-electrical-mechanical system acoustic sensor element () to provide an analog input signal () to a sigma-delta modulator () which then creates a pulse density modulated 1-bit data stream (), at an audio oversampling rate, to a first input of a first exclusive-or (XOR) logic gate (). The second input of the XOR logic gate is simultaneously presented with a first pseudo-random 1-bit data stream (), at the same audio oversampling rate, thereby resulting in an encrypted pulse density modulated (PDM) 1-bit data stream () at the output of the XOR logic gate. The encrypted PDM 1-bit data stream is clocked into a first-in first-out (FIFO) memory at the audio oversampling rate and is clocked out of the first FIFO memory as Ethernet PDM frame data packages () at a predetermined Ethernet PHY transfer rate.