Title:
無線通信システムおよび方法、無線通信装置および方法、並びに、プログラム
Document Type and Number:
Japanese Patent JP3972304
Kind Code:
B2
Abstract:
A memory control unit reads pieces of bit data to be checked by a check pulse to be received next by an antenna, the pieces of bit data being stored in a memory and forming unique data. The memory control unit operates a switch based on the content of the pieces of bit data. A reflection electrode reflects a surface acoustic wave excited by an interdigital electrode when both terminals of the reflection electrode are opened by the switch. The reflection electrode passes the surface acoustic wave when both terminals of the reflection electrode are short-circuited by the switch. The present invention is applicable to RFID systems using SAW.
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Inventors:
Kunio Fukuda
Application Number:
JP2003110235A
Publication Date:
September 05, 2007
Filing Date:
April 15, 2003
Export Citation:
Assignee:
ソニー株式会社
International Classes:
G06K17/00; G06K7/00; H04B1/59; G06K19/067; G06K19/07; H03H9/42; H04B5/02; H04Q5/22
Domestic Patent References:
| JP3075195A | ||||
| JP3181235A | ||||
| JP10049643A | ||||
| JP9330383A | ||||
| JP2000056810A | ||||
| JP5034449A | ||||
| JP2003263612A |
Attorney, Agent or Firm:
Yoshio Inamoto