Invention Grant
US09591148B2 Detecting proximity of devices based on transmission of inaudible sound signatures in the speech band
有权
基于语音频段中听不到声音签名的传输来检测设备的接近度
- Patent Title: Detecting proximity of devices based on transmission of inaudible sound signatures in the speech band
- Patent Title (中): 基于语音频段中听不到声音签名的传输来检测设备的接近度
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Application No.: US14680354Application Date: 2015-04-07
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Publication No.: US09591148B2Publication Date: 2017-03-07
- Inventor: Michael P. Dimitroff , Michael A. Ramalho
- Applicant: Cisco Technology, Inc.
- Applicant Address: US CA San Jose
- Assignee: Cisco Technology, Inc.
- Current Assignee: Cisco Technology, Inc.
- Current Assignee Address: US CA San Jose
- Agency: Edell, Shapiro & Finnan, LLC
- Main IPC: H04M19/04
- IPC: H04M19/04 ; G01S3/80
Abstract:
A communication device detects sound with a microphone to produce a sound signal representative of the sound and searches the sound signal for unique inaudible sound signatures associated with a group identifier. Each sound signature identifies a respective communication device. Each sound signature is in an audible frequency band but masked to be imperceptible. If any of the sound signatures are determined to be present in the sound signal, the communication device selects one based on predetermined criteria associated with the group identifier.
Public/Granted literature
- US20160301810A1 Detecting Proximity of Devices Based on Transmission of Inaudible Sound Signatures in the Speech Band Public/Granted day:2016-10-13
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