Invention Grant
- Patent Title: Fractional time delay structures in digitally oversampled microphone systems, circuits, and methods
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Application No.: US16171266Application Date: 2018-10-25
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Publication No.: US11646725B2Publication Date: 2023-05-09
- Inventor: Dashen Fan , Joseph Yong Kwon
- Applicant: KOPIN CORPORATION
- Applicant Address: US MA Westborough
- Assignee: SOLOS TECHNOLOGY LIMITED
- Current Assignee: SOLOS TECHNOLOGY LIMITED
- Current Assignee Address: HK Hong Kong
- Agency: PELOQUIN, PLLC
- Agent Mark S. Peloquin, Esq.
- Main IPC: H03K5/135
- IPC: H03K5/135 ; H03K5/133 ; H04R19/04 ; H03K5/00 ; H04R3/00 ; H04R1/00

Abstract:
An apparatus to time delay a digital, signal output from an oversampled sensor includes a first time delay element and a second time delay element. The first time delay element has a first input and a first output. The first time delay element is configured to output a time delayed signal that is time delayed by an integer number of sampling clock cycles. An output of the oversampled sensor is connected to the first input of the first time delay element. The second time delay element has a second input and a second output and is configured to output a time delayed signal that is time delayed by an integer number of sampling clock cycles. The first output of the first time delay element is connected to the second input of the second time delay element. A multiplexer has a control input and a multiplexer output. The first output of the first time delay element is connected to a first multiplexer input. The second output of the second time delay element is connected to a second multiplexer input. In operation, time delay information is used to provide a signal to the control input to select a particular multiplexer input for output on the multiplexer output. The output of the oversampled sensor is time delayed by an amount provided by the particular multiplexer input.
Public/Granted literature
- US20190131961A1 FRACTIONAL TIME DELAY STRUCTURES IN DIGITALLY OVERSAMPLED MICROPHONE SYSTEMS, CIRCUITS, AND METHODS Public/Granted day:2019-05-02
Information query
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