Title:
RECEPTION METHOD, RECEPTION DEVICE, NONCONTACT IC CARD, AND READER/WRITER
Document Type and Number:
Japanese Patent JP2011103610
Kind Code:
A
Abstract:
To properly receive a Manchester encoded radio signal while adaptively equalizing turbulence of reception waveform caused by an increase in communication rate.
When half-sampling a Manchester encoded signal, the shortest wavelength and the longest wavelength correspond to one pulse portion and a DC component, respectively, and thereby a bandwidth is 1/2 of a Manchester code, and is distributed around 0 MHz. Even when the number of taps of an FIR filter is the same, density of frequency positions controllable in the vicinity of the central distribution of a spectrum increases, an inverse characteristic of a frequency characteristic can be further faithfully expressed, and excellent adaptive equalization can be performed.
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Inventors:
MURAMATSU HIROTAKA
INO HIROYUKI
INO HIROYUKI
Application Number:
JP2009258422A
Publication Date:
May 26, 2011
Filing Date:
November 11, 2009
Export Citation:
Assignee:
SONY CORP
International Classes:
H04B7/005; G06K17/00; G06K19/07; H04B5/02
Attorney, Agent or Firm:
Masaaki Miyata
Eiji Yamada
Eiji Sasaki
Toshio Sawada
Daido Patent Office
Eiji Yamada
Eiji Sasaki
Toshio Sawada
Daido Patent Office
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