Receiving system for use in near field communication and mode detection method therefore
First Claim
1. A method of detecting a communication mode, comprising:
- receiving a communication frame pattern of data transmitted from a near field communication (NFC) initiator in accordance with a predetermined sampling clock;
detecting a communication mode indicating which one of a predetermined plurality of NFC protocols includes the communication frame pattern by analyzing a start pattern out of the communication frame pattern;
wherein the start pattern includes an S pattern corresponding to a TYPEA 106 protocol, and when the start pattern is analyzed, 1 bit of data behind the S pattern is further analyzed to detect the communication mode.
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Abstract
A method of detecting a communication mode is provided to rapidly detect which one of near field communication (NFC) protocols includes a communication frame pattern of data provided to a receiving device. The method includes receiving a communication frame pattern of data transmitted from an NFC initiator after synchronizing the communication frame pattern with a predetermined sampling clock. The detection of the communication mode may be done by analyzing a start pattern out of the communication frame pattern. Since a communication mode is rapidly detected and data is automatically received without performing an additional operation to set the communication mode, operation performance of a receiving device is improved.
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Citations
25 Claims
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1. A method of detecting a communication mode, comprising:
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receiving a communication frame pattern of data transmitted from a near field communication (NFC) initiator in accordance with a predetermined sampling clock; detecting a communication mode indicating which one of a predetermined plurality of NFC protocols includes the communication frame pattern by analyzing a start pattern out of the communication frame pattern; wherein the start pattern includes an S pattern corresponding to a TYPEA 106 protocol, and when the start pattern is analyzed, 1 bit of data behind the S pattern is further analyzed to detect the communication mode. - View Dependent Claims (2, 3)
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4. A receiving device for near field communication (NFC), comprising:
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a detecting and receiving unit to receive a signal through an antenna, and configured to detect a communication mode indicating which one of a predetermined plurality of NFC protocols includes a communication frame pattern by analyzing a start pattern out of the communication frame pattern of provided data using a predetermined sampling clock, and to receive the data; and a decoding and memory unit configured to decode the received data according to the detected communication mode and degrade the decoded received data according to a degrading information of the detected communication mode, and store the degraded data in a memory. - View Dependent Claims (5, 6, 7, 8, 9, 10, 11, 12)
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13. A near field communication (NFC) system comprising:
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an NFC initiator configured to transmit data; and an NFC target including a detecting and receiving unit configured to detect a communication mode indicating one of a predetermined plurality of NFC protocols by analyzing a start pattern of a communication frame pattern and to provide data to a decoding and memory unit using a predetermined sampling clock, the decoding and memory unit configured to decode the received data according to the detected communication mode, degrade the decoded received data according to a degrading information of the detected communication mode, and store the degraded data in a memory. - View Dependent Claims (14, 15)
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16. A method of detecting a communication protocol in a near field communication (NFC) receiver, the method comprising:
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receiving a near field communication including data; and determining a protocol of the near field communication by analyzing a start pattern of a communication frame pattern of the data, wherein determining the protocol includes detecting whether the start pattern includes a 1-bit 9A5965A6 hex, and setting a communication mode to correspond to a FELICIA 424 protocol when the start pattern includes the 1-bit 9A5965A6 hex. - View Dependent Claims (17, 18, 19, 20)
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21. A near field communication (NFC) receiver, comprising:
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a detection circuit to receive a near field communication signal including data, and to detect a protocol of the received data from among a predetermined plurality of protocols by analyzing a start pattern of a communication frame pattern of the data; and a decoding and memory unit configured to decode the received data according to the detected protocol and degrade the decoded received data according to a degrading information of the detected protocol and store the degraded data in a memory. - View Dependent Claims (22, 23, 24)
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25. A near field communication (NFC) system, comprising:
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an NFC transmitter to transmit an NFC signal including data; and an NFC receiver to receive the NFC signal and to detect a protocol of the received data from among a predetermined plurality of protocols by analyzing a start pattern of a communication frame pattern of the data and decode the received data according to the detected protocol and degrade the decoded received data according to a degrading information of the detected protocol and store the degraded data in a memory.
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Specification