Invention Grant
- Patent Title: Low-noise driver and low-noise receiver for self-mix module
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Application No.: US15511642Application Date: 2016-07-25
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Publication No.: US10334359B2Publication Date: 2019-06-25
- Inventor: Tal Fishman , Alexander Blumkin , Guy Ofek , Eytan Keydar , Tal Bakish
- Applicant: VocalZoom Systems Ltd.
- Applicant Address: IL Yokneam Illit
- Assignee: VOCALZOOM SYSTEMS LTD.
- Current Assignee: VOCALZOOM SYSTEMS LTD.
- Current Assignee Address: IL Yokneam Illit
- Agency: Eitan Mehulal Sadot
- International Application: PCT/IB2016/054416 WO 20160725
- International Announcement: WO2017/017592 WO 20170202
- Main IPC: H04R3/00
- IPC: H04R3/00 ; H04R17/02 ; H04R19/04 ; H04R23/00 ; H04R23/02 ; G10L21/0216

Abstract:
Optical microphone, laser-based microphone, and laser microphone having reduced-noise components of low-noise components. A laser microphone comprises a laser-diode associated with a low-noise laser driver TX; and a photo-diode associated with a low-noise photo-diode receiver RX. The low-noise laser driver TX supplies a drive current which is a combination of a Direct Current component having a first bandwidth, and an attenuated version of an Alternating Current component having a second, different, bandwidth. Additionally or alternatively, the low-noise photo-diode receiver RX utilizes hardware-based demodulation of the analog signal, and operates to remove a Direct Current component of its output signal prior to digitization.
Public/Granted literature
- US20180234761A1 LOW-NOISE DRIVER AND LOW-NOISE RECEIVER FOR SELF-MIX MODULE Public/Granted day:2018-08-16
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