JP2005536965A - 非接触トランスポンダの入力信号を調整する方法 - Google Patents
非接触トランスポンダの入力信号を調整する方法 Download PDFInfo
- Publication number
- JP2005536965A JP2005536965A JP2004569701A JP2004569701A JP2005536965A JP 2005536965 A JP2005536965 A JP 2005536965A JP 2004569701 A JP2004569701 A JP 2004569701A JP 2004569701 A JP2004569701 A JP 2004569701A JP 2005536965 A JP2005536965 A JP 2005536965A
- Authority
- JP
- Japan
- Prior art keywords
- signal
- adjustment
- amplitude
- modulation
- input signal
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
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Classifications
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
- G06K19/00—Record carriers for use with machines and with at least a part designed to carry digital markings
- G06K19/06—Record carriers for use with machines and with at least a part designed to carry digital markings characterised by the kind of the digital marking, e.g. shape, nature, code
- G06K19/067—Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards also with resonating or responding marks without active components
- G06K19/07—Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards also with resonating or responding marks without active components with integrated circuit chips
- G06K19/0723—Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards also with resonating or responding marks without active components with integrated circuit chips the record carrier comprising an arrangement for non-contact communication, e.g. wireless communication circuits on transponder cards, non-contact smart cards or RFIDs
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03D—DEMODULATION OR TRANSFERENCE OF MODULATION FROM ONE CARRIER TO ANOTHER
- H03D1/00—Demodulation of amplitude-modulated oscillations
- H03D1/08—Demodulation of amplitude-modulated oscillations by means of non-linear two-pole elements
- H03D1/10—Demodulation of amplitude-modulated oscillations by means of non-linear two-pole elements of diodes
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L27/00—Modulated-carrier systems
- H04L27/02—Amplitude-modulated carrier systems, e.g. using on-off keying; Single sideband or vestigial sideband modulation
- H04L27/06—Demodulator circuits; Receiver circuits
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L27/00—Modulated-carrier systems
- H04L27/02—Amplitude-modulated carrier systems, e.g. using on-off keying; Single sideband or vestigial sideband modulation
- H04L27/08—Amplitude regulation arrangements
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Physics & Mathematics (AREA)
- Power Engineering (AREA)
- Computer Hardware Design (AREA)
- Microelectronics & Electronic Packaging (AREA)
- General Physics & Mathematics (AREA)
- Theoretical Computer Science (AREA)
- Nonlinear Science (AREA)
- Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
- Circuits Of Receivers In General (AREA)
- Manipulation Of Pulses (AREA)
- Near-Field Transmission Systems (AREA)
Abstract
Description
2 復調器
3 調整制御器
4 フィールド調整器
UHF 入力信号
Vsighigh high識別信号
Vsiglow low識別信号
Vref 基準値
I 入力信号
I´ 出力値
Claims (3)
- 非接触トランスポンダの入力信号を調整する方法であって、
振幅変調された入力信号の信号強度が目標値に調整され、復調器によって変調ギャップが認識される際に、調整増幅の調整が該変調ギャップの前の時点に確定され、変調ギャップの終了が確認される際に、所定の間隔の後に該調整が解除される、方法。 - 前記所定の間隔は、前記信号の振幅が前記変調ギャップの前の前記値に上昇するまで継続する、請求項1に記載の方法。
- 前記所定の間隔は、2つの前記変調ギャップ間の最小間隔より小さい、請求項2に記載の方法。
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10238592 | 2002-08-22 | ||
DE10251459A DE10251459B4 (de) | 2002-08-22 | 2002-11-05 | Verfahren zum Regeln des Eingangssignals eines Kontaktlos-Transponders |
PCT/DE2003/002599 WO2004021270A1 (de) | 2002-08-22 | 2003-08-01 | Verfahren zum regeln des eingangssignals eines kontaktlos-transponders |
Publications (3)
Publication Number | Publication Date |
---|---|
JP2005536965A true JP2005536965A (ja) | 2005-12-02 |
JP2005536965A5 JP2005536965A5 (ja) | 2006-04-13 |
JP4122337B2 JP4122337B2 (ja) | 2008-07-23 |
Family
ID=31979453
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2004569701A Expired - Fee Related JP4122337B2 (ja) | 2002-08-22 | 2003-08-01 | 非接触トランスポンダの入力信号を調整する方法 |
Country Status (5)
Country | Link |
---|---|
EP (1) | EP1530778B1 (ja) |
JP (1) | JP4122337B2 (ja) |
DE (1) | DE50306681D1 (ja) |
TW (1) | TWI259652B (ja) |
WO (1) | WO2004021270A1 (ja) |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2768880B1 (fr) * | 1997-09-23 | 2000-05-05 | Sgs Thomson Microelectronics | Demodulateur pour carte a puce sans contact |
FR2806855B1 (fr) * | 2000-03-21 | 2002-06-21 | St Microelectronics Sa | Demodulateur d'un signal alternatif module en amplitude |
CN1232085C (zh) * | 2001-04-04 | 2005-12-14 | 因芬尼昂技术股份公司 | 解调变由低和高电平间振幅更替所ask调制的电压的装置 |
-
2003
- 2003-08-01 WO PCT/DE2003/002599 patent/WO2004021270A1/de active IP Right Grant
- 2003-08-01 EP EP03790669A patent/EP1530778B1/de not_active Expired - Fee Related
- 2003-08-01 JP JP2004569701A patent/JP4122337B2/ja not_active Expired - Fee Related
- 2003-08-01 DE DE50306681T patent/DE50306681D1/de not_active Expired - Lifetime
- 2003-08-01 TW TW92121240A patent/TWI259652B/zh not_active IP Right Cessation
Also Published As
Publication number | Publication date |
---|---|
DE50306681D1 (de) | 2007-04-12 |
EP1530778A1 (de) | 2005-05-18 |
WO2004021270A1 (de) | 2004-03-11 |
EP1530778B1 (de) | 2007-02-28 |
TW200406090A (en) | 2004-04-16 |
TWI259652B (en) | 2006-08-01 |
JP4122337B2 (ja) | 2008-07-23 |
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