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Method and apparatus for improving identification of multiple nfc-a devices

A device and a single technology, applied in the direction of instruments, induction record carriers, electromagnetic radiation induction, etc., can solve the problem that the polling device cannot determine the content, etc.

Inactive Publication Date: 2018-01-09
QUALCOMM INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In such an aspect, if there is a conflict in certain bytes of SENS_RES, the polling device may not be able to determine what has been sensed

Method used

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  • Method and apparatus for improving identification of multiple nfc-a devices
  • Method and apparatus for improving identification of multiple nfc-a devices
  • Method and apparatus for improving identification of multiple nfc-a devices

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Embodiment Construction

[0022] Various aspects are now described with reference to the figures. In the following description, for purposes of explanation, numerous specific details are set forth in order to provide a thorough understanding of one or more aspects. However, it is understood that these aspects may be practiced without these specific details.

[0023]Typically, during the technology detection process, the polling device may receive device sense responses from multiple remote NFC devices within conflicting operating spaces. A conflict resolution loop may be used to attempt to identify each remote NFC device that provided a device sense response. The conflict resolution process may continue until each remote NFC device of the plurality of remote NFC devices has been individually identified. In each iteration of the conflict resolution loop, each resolved NFC device can be put into sleep mode, the polling device can send a new device sensing request, and a new device sensing request can b...

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Abstract

Aspects disclosed herein relate to improving technology detection and collision resolution between multiple NFC devices using NFC Type A RF technology. In one example, the communications device is configured to: determine that a first device sensing response message includes one or more conflicts; identify one of the plurality of remote NFC devices by performing conflict resolution on the first device sensing response message. the first remote NFC device; send to the first remote NFC device a sleep request message and a first device sensing request message that prohibit the first remote NFC device from responding to the first device sensing request message; receive the first device sensing request message including the a conflicting second device sensing response message between the plurality of remote NFC devices; and identifying a second remote NFC device of the plurality of remote NFC devices by performing conflict resolution on the second device sensing response message .

Description

[0001] Claiming Priority Based on 35 U.S.C. §119 [0002] This patent application claims priority to Provisional Application No. 61 / 594,270, filed February 2, 2012, entitled "METHODS AND APPARATUSFOR IMPROVING THE IDENTIFICATION OF MULTIPLE NFC-A DEVICES," which is assigned to the present assignee of the application, which is hereby expressly incorporated by reference. Background technique [0003] The disclosed aspects generally relate to communication between and / or within devices, and in particular, the disclosed aspects relate to methods for improving communication between a plurality of near field communication (NFC) devices using NFC Type A radio frequency (RF) technology. Methods and systems for technology detection and conflict resolution (resolution). [0004] Technological advances have resulted in smaller and more powerful personal computing devices. For example, there currently exist a variety of portable personal computing devices, including wireless computing d...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06K7/10
CPCH04B5/00G06K7/10029
Inventor J·伊利安D·金加兰德J·R·奥多诺霍
Owner QUALCOMM INC
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