Methods and apparatus for improving remote nfc device detection using an oscillator circuit
AssigneeQUALCOMM Incorporated
InventorsRoger Brockenbrough, Sang-Min Lee, Angelica Wong
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Abstract
A method, an apparatus, and a computer program product for wireless and/or inductive communications are provided in connection with improving remote NFC device detection through use of an oscillator circuit connected to an NFC antenna and matching network. In one example, a communications device is equipped to monitor frequency oscillations generated by an oscillator circuit associated with a transmitter path of a NFC antenna and matching network, determine that a number of occurrences of the frequency oscillations from a reference frequency is greater than a frequency deviation threshold, and perform a NFC polling procedure in response to the determination.
Claims40
A method of inductive communications, comprising:
- monitoring frequency oscillations generated by an oscillator circuit associated with a transmitter path of a near field communication (NFC) antenna and matching network;
- determining that a number of occurrences of the frequency oscillations from a reference frequency is greater than a frequency deviation threshold;
- and
- performing a NFC polling procedure in response to the determination.
An apparatus for inductive communications, comprising:
- means for monitoring frequency oscillations generated by an oscillator circuit associated with a transmitter path of a near field communication (NFC) antenna and matching network;
- means for determining that a number of occurrences of the frequency oscillations from a reference frequency is greater than a frequency deviation threshold;
- and
- means for performing a NFC polling procedure in response to the determination.
A computer program product, comprising:
- a computer-readable medium comprising code for:
- monitoring frequency oscillations generated by an oscillator circuit associated with a transmitter path of a near field communication (NFC) antenna and matching network;
- determining that a number of occurrences of the frequency oscillations from a reference frequency is greater than a frequency deviation threshold;
- and
- performing a NFC polling procedure in response to the determination.
An apparatus for inductive communications, comprising:
- a near field communication (NFC) antenna and matching network;
- a oscillator circuit coupled to a transmitter path of the NFC antenna and matching network and configured to monitor frequency oscillations;
- and
- a processing system coupled to at least one or the oscillator circuit or the NFC antenna and matching network and configured to:
- determine that a number of occurrences of the frequency oscillations from a reference frequency is greater than a frequency deviation threshold;
- and
- perform a NFC polling procedure in response to the determination.
Dependencies are inferred from the claim text.