Invention Grant
US08824961B2 Method and apparatus for reducing NFC multi-protocol polling duration and power consumption
有权
用于减少NFC多协议轮询持续时间和功耗的方法和装置
- Patent Title: Method and apparatus for reducing NFC multi-protocol polling duration and power consumption
- Patent Title (中): 用于减少NFC多协议轮询持续时间和功耗的方法和装置
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Application No.: US13170999Application Date: 2011-06-28
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Publication No.: US08824961B2Publication Date: 2014-09-02
- Inventor: Philip Stewart Royston
- Applicant: Philip Stewart Royston
- Applicant Address: US CA Irvine
- Assignee: Broadcom Corporation
- Current Assignee: Broadcom Corporation
- Current Assignee Address: US CA Irvine
- Agency: Sterne, Kessler, Goldstein & Fox P.L.L.C.
- Main IPC: H04B7/00
- IPC: H04B7/00
Abstract:
A method and apparatus are disclosed for polling for near field communications (NFC) devices by checking for multiple protocols. A NFC device polls for devices by first maintaining an unmodulated carrier field active for a specific period of time. The NFC device then polls using a first modulation and waits for a response. If there is no response, and without again maintaining another unmodulated carrier field for a specific period of time, the NFC device polls using a second modulation that is greater than the first modulation and waits again for a response.
Public/Granted literature
- US20130005242A1 METHOD AND APPARATUS FOR REDUCING NFC MULTI-PROTOCOL POLLING DURATION AND POWER CONSUMPTION Public/Granted day:2013-01-03
Information query
