JP5184278B2 - 波形生成回路およびタグ通信装置 - Google Patents
波形生成回路およびタグ通信装置 Download PDFInfo
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- JP5184278B2 JP5184278B2 JP2008243254A JP2008243254A JP5184278B2 JP 5184278 B2 JP5184278 B2 JP 5184278B2 JP 2008243254 A JP2008243254 A JP 2008243254A JP 2008243254 A JP2008243254 A JP 2008243254A JP 5184278 B2 JP5184278 B2 JP 5184278B2
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- 238000004891 communication Methods 0.000 title claims description 115
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Claims (3)
- 所定の周波数成分のみを含んだ基本波形に関する情報を複数種類記憶する基本波形記憶回路と、
前記基本波形記憶回路が記憶する前記基本波形に関する情報を複数種類読み出す読み出し回路と、
前記読み出し回路が読み出した前記基本波形に関する情報を複数種類組み合わせ、送信データを変調した波形と同一の波形を生成する波形生成回路と、
を備えたことを特徴とする波形生成回路。 - 通信規格と、データと、当該通信規格で定められた方式で当該データを変調した波形の一部と同一の波形となる前記基本波形に関する情報の組み合わせとを関連づけて組み合わせテーブルとして記憶する組み合わせ記憶回路と、
複数の前記通信規格から一の通信規格を選択する通信規格選択回路と、
前記データの入力を受け付ける入力回路と、
を備え、
前記読み出し回路は、前記通信規格選択回路が選択した前記通信規格と、前記入力回路が受け付けた前記データとの組み合わせに対応する、当該通信規格で定められた方式で当該データを変調した波形と同一の波形となる前記基本波形に関する情報の組み合わせを前記組み合わせ記憶回路が記憶する前記組み合わせテーブルに基づいて決定し、決定した前記基本波形に関する情報の組み合わせで指定された前記基本波形に関する情報を前記基本波形記憶回路から読み出す
ことを特徴とする請求項1に記載の波形生成回路。 - 請求項1または請求項2のいずれか1項に記載の波形生成回路と、
前記波形生成回路が生成した波形をRFIDタグに送信する送信部と、
を備えたことを特徴とするタグ通信装置。
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JP2008243254A JP5184278B2 (ja) | 2008-09-22 | 2008-09-22 | 波形生成回路およびタグ通信装置 |
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JP2008243254A JP5184278B2 (ja) | 2008-09-22 | 2008-09-22 | 波形生成回路およびタグ通信装置 |
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JP2010074785A JP2010074785A (ja) | 2010-04-02 |
JP5184278B2 true JP5184278B2 (ja) | 2013-04-17 |
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Publication number | Priority date | Publication date | Assignee | Title |
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JP3531477B2 (ja) * | 1998-06-05 | 2004-05-31 | 株式会社日立製作所 | 非接触カードの通信方法及び該通信に用いる集積回路 |
EP1585280B1 (en) * | 2003-01-15 | 2013-03-13 | Nippon Telegraph And Telephone Corporation | Non-contact RF ID system communication method, non-contact RF ID system, transmitter, and receiver |
JP4624239B2 (ja) * | 2005-11-10 | 2011-02-02 | 株式会社横須賀テレコムリサーチパーク | Rfid通信装置 |
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