JP2008519347A - 離調可能な無線周波数タグ - Google Patents
離調可能な無線周波数タグ Download PDFInfo
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- JP2008519347A JP2008519347A JP2007539635A JP2007539635A JP2008519347A JP 2008519347 A JP2008519347 A JP 2008519347A JP 2007539635 A JP2007539635 A JP 2007539635A JP 2007539635 A JP2007539635 A JP 2007539635A JP 2008519347 A JP2008519347 A JP 2008519347A
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- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B13/00—Burglar, theft or intruder alarms
- G08B13/22—Electrical actuation
- G08B13/24—Electrical actuation by interference with electromagnetic field distribution
- G08B13/2402—Electronic Article Surveillance [EAS], i.e. systems using tags for detecting removal of a tagged item from a secure area, e.g. tags for detecting shoplifting
- G08B13/2405—Electronic Article Surveillance [EAS], i.e. systems using tags for detecting removal of a tagged item from a secure area, e.g. tags for detecting shoplifting characterised by the tag technology used
- G08B13/2414—Electronic Article Surveillance [EAS], i.e. systems using tags for detecting removal of a tagged item from a secure area, e.g. tags for detecting shoplifting characterised by the tag technology used using inductive tags
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- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B13/00—Burglar, theft or intruder alarms
- G08B13/22—Electrical actuation
- G08B13/24—Electrical actuation by interference with electromagnetic field distribution
- G08B13/2402—Electronic Article Surveillance [EAS], i.e. systems using tags for detecting removal of a tagged item from a secure area, e.g. tags for detecting shoplifting
- G08B13/2405—Electronic Article Surveillance [EAS], i.e. systems using tags for detecting removal of a tagged item from a secure area, e.g. tags for detecting shoplifting characterised by the tag technology used
- G08B13/2414—Electronic Article Surveillance [EAS], i.e. systems using tags for detecting removal of a tagged item from a secure area, e.g. tags for detecting shoplifting characterised by the tag technology used using inductive tags
- G08B13/242—Tag deactivation
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- Automation & Control Theory (AREA)
- Computer Security & Cryptography (AREA)
- Electromagnetism (AREA)
- General Physics & Mathematics (AREA)
- Burglar Alarm Systems (AREA)
- Variable-Direction Aerials And Aerial Arrays (AREA)
- Details Of Aerials (AREA)
- Near-Field Transmission Systems (AREA)
Abstract
Description
Claims (39)
- 基板の第1の面上で誘導コイルとして同じ面上にある第1のコンデンサプレートに電気的に接続された誘導コイルを備える同調回路を備えるRFタグであって、前記誘導コイルが、第1のコンデンサプレートと実質的に整合されているが誘電体層によって第1のコンデンサプレートから分離される第2のコンデンサプレートに電気的に接続され、同調回路は、同調回路の共振周波数またはその前後の周波数の強電界にさらされたとき導電特性が絶縁状態から導通状態へと変化できるスイッチ構成物が与えられている絶縁間隙も含むことを特徴とする、RFタグ。
- 誘電体層が基板であり、第2のコンデンサプレートが基板の第2の面上に配置される、請求項1に記載のRFタグ。
- スイッチ構成物の導電率の変化が同調回路の共振周波数の変化をもたらす、請求項1に記載のRFタグ。
- 絶縁間隙が、第1および第2のコンデンサプレートにそれぞれ接続された導電性トラックの間にある、請求項1から3のいずれか一項に記載のRFタグ。
- 絶縁間隙が、第1および第2のコンデンサプレートのいずれかと、少なくとも1つのさらなるコンデンサプレートの間にある、請求項1から3のいずれか一項に記載のRFタグ。
- 各々にスイッチ構成物が与えられている相次ぐ絶縁間隙によって分離された複数のコンデンサプレートを有する、請求項5に記載のRFタグ。
- 絶縁間隙が、誘導コイルの巻きの間にある、請求項1から3のいずれか一項に記載のRFタグ。
- 絶縁間隙が、誘導コイルとさらなる誘導コイルの間にある、請求項1から3のいずれか一項に記載のRFタグ。
- 元の誘導コイルの内部または外部にさらに巻きを備える複数のさらなる誘導コイルを有する、請求項8に記載のRFタグ。
- 導電率の変化が、少なくとも1つのさらなる電気部品を回路内に導入する、請求項1に記載のRFタグ。
- さらなる電気部品が、集積回路またはメモリチップである、請求項10に記載のRFタグ。
- 基板が誘電材料である、請求項1から11のいずれか一項に記載のRFタグ。
- 誘電材料が、紙、重合体、高分子複合材料、セラミックまたは硬化されたスイッチ構成物から選択される、請求項12に記載のRFタグ。
- 誘電材料がスイッチ構成物である、請求項13に記載のRFタグ。
- ある電位にさらされたとき導電特性が絶縁状態から導通状態へと変化できるRFタグに適するスイッチ構成物であって、結合剤および絶縁表面層を有する複数の導電微粒子を含み、実質的に全ての前記微粒子が隣接した微粒子に接触していて、その結果、絶縁表面層が電気的な電位で破壊されたとき導電経路を生成する、スイッチ構成物。
- 絶縁表面層の厚さが1ミクロン未満である、請求項15に記載の構成物。
- 絶縁層の厚さが100nm未満である、請求項16に記載の構成物。
- 絶縁層の厚さが50nm未満である、請求項17に記載の構成物。
- 導電微粒子が、金属、合金およびメタロイド微粒子から選択される、請求項15から18のいずれか一項に記載の構成物。
- 金属が、アルミニウム、銅、チタンおよびニッケルから選択される、請求項19に記載の構成物。
- 絶縁表面層が、有機高分子、ディウェッティング剤または金属酸化物である、請求項15から20のいずれか一項に記載の構成物。
- 絶縁表面層がステアリン酸またはオレイン酸である、請求項21に記載の構成物。
- 導電微粒子が、w/wでスイッチ構成物の5%から75%の範囲にある、請求項15から22のいずれか一項に記載の構成物。
- 導電微粒子が、高抵抗の導電経路を形成し、w/wでスイッチ構成物の5%から25%の範囲にある、請求項23に記載の構成物。
- 導電微粒子が、低抵抗の導電経路を形成し、w/wでスイッチ構成物の25%から75%の範囲にある、請求項23に記載の構成物。
- 導電微粒子の直径が、0.1μmから1000μmの範囲にある、請求項15から25のいずれか一項に記載の構成物。
- 導電微粒子の直径が、1μmから100μmの範囲にある、請求項26に記載の構成物。
- 非導電結合剤が有機高分子である、請求項15から27のいずれか一項に記載の構成物。
- 非導電結合剤が、ポリビニルアルコール、ポリ酢酸ビニル、ポリアミド、ポリエーテル、ポリウレタン、UV硬化可能な単量体または低重合体、あるいはホットメルト接着剤である、請求項28に記載の構成物。
- スイッチ構成物をプリントするのに適したインク配合物であって、プリント可能なインク、請求項15から29のいずれか一項に記載のスイッチ構成物および任意選択で溶剤を含む、インク配合物。
- 揮発性溶剤を含む、請求項30に記載のインク配合物。
- 揮発性溶剤が、水、アルコール、ケトンまたはエーテルである、請求項31に記載のインク配合物。
- 熱放射によって硬化可能な、請求項30から32のいずれか一項に記載のインク配合物。
- 紫外線放射によって硬化可能な、請求項30から32のいずれか一項に記載のインク配合物。
- インクが、顔料または他の分光的に活性の物質をさらに含む、請求項30から34のいずれか一項に記載のインク配合物。
- 複数の同調回路を備えるRFタグであって、前記タグを第1の共振周波数に相当するRF周波数にさらすことにより、1つまたは複数の回路が、第1の共振周波数から第2の共振周波数へと、または非共振状態へと変化させられる、RFタグ。
- 請求項37で定義されたRFタグを活性化する方法であって、i)1つまたは複数の回路の共振周波数を選択するステップと、ii)前記回路を、第1の周波数での共振から、第2の周波数での共振へと変化させるかまたは非共振状態へと変化させるステップと、iii)ステップi)とステップii)を繰り返して、前記活性化タグに共振周波数の一意の組合せをもたらすステップと、iv)前記RFタグ内の複数の同調回路に共振を起こさせることができる複数の低消費電力RF信号を伝送するステップと、v)前記複数の共振周波数の存在を検知するステップとを含む、方法。
- 請求項37による共振周波数の一意の組合せを生成するための方法を使用する、請求項1から14または請求項36のいずれか一項に記載の複数のRFタグを備えるデータ記憶手段。
- 実質的に本明細書に記載されたかまたは図示された製品、構成物またはプロセス。
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB0424499A GB0424499D0 (en) | 2004-11-05 | 2004-11-05 | Deactivatable RF tags |
GB0501241A GB0501241D0 (en) | 2005-01-21 | 2005-01-21 | Detunable RF tags |
PCT/GB2005/004264 WO2006048663A1 (en) | 2004-11-05 | 2005-11-03 | Detunable rf tags |
Publications (2)
Publication Number | Publication Date |
---|---|
JP2008519347A true JP2008519347A (ja) | 2008-06-05 |
JP2008519347A5 JP2008519347A5 (ja) | 2008-12-11 |
Family
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Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2007539635A Pending JP2008519347A (ja) | 2004-11-05 | 2005-11-03 | 離調可能な無線周波数タグ |
Country Status (4)
Country | Link |
---|---|
US (1) | US20070268113A1 (ja) |
EP (1) | EP1807814A1 (ja) |
JP (1) | JP2008519347A (ja) |
WO (1) | WO2006048663A1 (ja) |
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2005
- 2005-11-03 US US11/666,739 patent/US20070268113A1/en not_active Abandoned
- 2005-11-03 JP JP2007539635A patent/JP2008519347A/ja active Pending
- 2005-11-03 EP EP05808012A patent/EP1807814A1/en not_active Withdrawn
- 2005-11-03 WO PCT/GB2005/004264 patent/WO2006048663A1/en active Application Filing
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Also Published As
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WO2006048663A1 (en) | 2006-05-11 |
EP1807814A1 (en) | 2007-07-18 |
US20070268113A1 (en) | 2007-11-22 |
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