Invention Grant
US09071926B2 Device detection using load modulation in near-field communications
有权
在近场通信中使用负载调制的设备检测
- Patent Title: Device detection using load modulation in near-field communications
- Patent Title (中): 在近场通信中使用负载调制的设备检测
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Application No.: US13657751Application Date: 2012-10-22
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Publication No.: US09071926B2Publication Date: 2015-06-30
- Inventor: Koushik Krishnan , Rainer Gaethke
- Applicant: Qualcomm Incorporated
- Applicant Address: US CA San Diego
- Assignee: QUALCOMM Incorporated
- Current Assignee: QUALCOMM Incorporated
- Current Assignee Address: US CA San Diego
- Agency: Mahamedi Paradice LLP
- Main IPC: H04W4/00
- IPC: H04W4/00 ; G06K7/10 ; H04B5/00 ; H04B5/02 ; H04M1/725
Abstract:
First and second NFC devices both seek to determine whether the other device is present and available for communication across an NFC channel. The first NFC device modulates a load in its transceiver. The second NFC device transmits a waveform. If the first NFC device detects the waveform while modulating its load, and if the second NFC device detects the load modulation while transmitting the waveform, then the two NFC devices initiate communication in accordance with a communication protocol.
Public/Granted literature
- US20140113551A1 DEVICE DETECTION USING LOAD MODULATION IN NEAR-FIELD COMMUNICATIONS Public/Granted day:2014-04-24
Information query
