Amplitude-shift-keying (ASK) radio-frequency (RF) signal...

Pulse or digital communications – Receivers – Amplitude modulation

Reexamination Certificate

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Reexamination Certificate

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08045648

ABSTRACT:
An amplitude-shift-keying radio-frequency (ASK RF) signal decoding method includes separating a low frequency and a high frequency from an ASK RF signal, which includes a pause section and a non-pause section, generating a divided signal by dividing the high frequency signal, counting the divided signal for the non-pause section of the low frequency signal, and decoding the ASK RF signal based on a result of the counting.

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patent: 2000-307465 (2000-11-01), None
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Stephane Meillere et al.: “13.56 MHz CMOS transceiver for RFID applications”, Analog Integrated Circuits and Signal Processing, Kluwer Academic Publishers, BO, deel 49, nr.3, Sep. 25, 2006, Bladzijden 249-256, XP019432892, ISSN: 1573-1979.
Atmel Corporation: “Requirements of ISO/IEC 14443 Type B Proximity Contactless Identification Cards”, Application Note Atmel, nr. Rev. 2056B-RFID-11/05, Jan. 1, 2005, bladzijden 1-28, XP007915808.

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