Data recovery method and apparatus for radio frequency identification
AssigneeSamsung Electronics Co., Ltd.
InventorsJi-hun Koo, Woo-shik Kang, Kyung-ho Park
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Abstract
Provided are an RFID reader and a data recovery method which selectively selects only an integrity-checked phase signal, when receiving a backscattered signal of an RFID tag through an I signal path or a Q signal path, and may reduce a shadow area of a read range. The RFID reader includes a signal receiver which receives a plurality of phase signals; a symbol detector which recovers data with respect to each of the received phase signals; and a signal selector which selects a signal that satisfies a predetermined standard, from the data-recovered phase signals.
Claims13
A radio frequency identification (RFID) reader comprising:
- a signal receiver of the RFID reader, which receives a plurality of phase signals;
- a symbol detector which recovers data with respect to each of the received phase signals;
- and
- a signal selector which selects a signal that satisfies a predetermined standard, from the data-recovered phase signals,
- wherein the predetermined standard is satisfied by the signal selector selecting a phase signal which comprises an integrity-checked preamble signal of each of an I signal path and a Q signal path.
A data recovery method comprising:
- receiving, at a radio frequency identification (RFID) reader, a plurality of phase signals;
- recovering data with respect to each of the received phase signals;
- and
- selecting a signal, which satisfies a predetermined standard, from the data-recovered phase signals,
- wherein the predetermined standard is satisfied by selecting a phase signal which comprises an integrity-checked preamble signal of each of an I signal path and a Q signal path.
A non-transitory computer-readable recording medium storing a program for implementing a method comprising:
- receiving, at a radio frequency identification (RFID) reader a plurality of phase signals;
- recovering data with respect to each of the received phase signals;
- and
- selecting a signal which satisfies a predetermined standard, from the data-recovered phase signals,
- wherein the predetermined standard is satisfied by selecting a phase signal which comprises an integrity-checked preamble signal of each of an I signal path and a Q signal path.
Dependencies are inferred from the claim text.