JPS6481086A - Non-contact type magnetic coupling transmitting and receiving system - Google Patents

Non-contact type magnetic coupling transmitting and receiving system

Info

Publication number
JPS6481086A
JPS6481086A JP62238212A JP23821287A JPS6481086A JP S6481086 A JPS6481086 A JP S6481086A JP 62238212 A JP62238212 A JP 62238212A JP 23821287 A JP23821287 A JP 23821287A JP S6481086 A JPS6481086 A JP S6481086A
Authority
JP
Japan
Prior art keywords
data
transmitting
card
circuit
receiving coil
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
Application number
JP62238212A
Other languages
Japanese (ja)
Other versions
JP2631664B2 (en
Inventor
Yosuke Katayama
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Maxell Holdings Ltd
Original Assignee
Hitachi Maxell Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Hitachi Maxell Ltd filed Critical Hitachi Maxell Ltd
Priority to JP62238212A priority Critical patent/JP2631664B2/en
Priority to EP88308709A priority patent/EP0309201B1/en
Publication of JPS6481086A publication Critical patent/JPS6481086A/en
Priority to US07/704,841 priority patent/US5113184A/en
Application granted granted Critical
Publication of JP2631664B2 publication Critical patent/JP2631664B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Abstract

PURPOSE:To simplify a data transmitting circuit of an IC card by transmitting and receiving a data by a variation of a resonance frequency. CONSTITUTION:An IC card 2 receives power which becomes its power source, through a transmitting coil 12 from an oscillating circuit 4 of a reader/writer 1 by a receiving coil 13 which is coupled magnetically to said coil in a non- contact state. This power which is received by the receiving coil 13 is converted to power of a DC voltage by a rectifying circuit 8, and supplied to each circuit of the IC card 2. On the other hand, a data which is sent out to the IC card 2 from the reader/writer 1 is sent out in a form of a tone burst through an oscillating circuit 5 and a transmitting/receiving coil 14 by a data processor 6. This data is received by a transmitting/receiving coil 15 of the IC card 2, demodulated to a digital signal by a detecting and rectifying circuit 9, and sent to a data processing circuit 11. The data information to the reader/writer 1 from the IC card 2 is executed by operating a switching circuit 10 to match a transmitting data.
JP62238212A 1987-09-22 1987-09-22 Non-contact magnetic coupling transmission / reception method Expired - Fee Related JP2631664B2 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
JP62238212A JP2631664B2 (en) 1987-09-22 1987-09-22 Non-contact magnetic coupling transmission / reception method
EP88308709A EP0309201B1 (en) 1987-09-22 1988-09-20 Method and system of communication for a non-contact ic card
US07/704,841 US5113184A (en) 1987-09-22 1991-05-20 Method and system of communication for a non-contact ic card

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP62238212A JP2631664B2 (en) 1987-09-22 1987-09-22 Non-contact magnetic coupling transmission / reception method

Publications (2)

Publication Number Publication Date
JPS6481086A true JPS6481086A (en) 1989-03-27
JP2631664B2 JP2631664B2 (en) 1997-07-16

Family

ID=17026813

Family Applications (1)

Application Number Title Priority Date Filing Date
JP62238212A Expired - Fee Related JP2631664B2 (en) 1987-09-22 1987-09-22 Non-contact magnetic coupling transmission / reception method

Country Status (1)

Country Link
JP (1) JP2631664B2 (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH10145987A (en) * 1996-09-13 1998-05-29 Hitachi Ltd Power transmission system, ic card and information communicating system using ic card
JP2003088561A (en) * 2001-09-20 2003-03-25 Aiphone Co Ltd Information display board for hospital
JP2003536302A (en) * 2000-06-06 2003-12-02 バッテル メモリアル インスティテュート Telecommunications systems and methods
JP2006031512A (en) * 2004-07-20 2006-02-02 Sony Corp Memory card, communication control method for memory card, electronic equipment, and radio communication system

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH10145987A (en) * 1996-09-13 1998-05-29 Hitachi Ltd Power transmission system, ic card and information communicating system using ic card
JP2003536302A (en) * 2000-06-06 2003-12-02 バッテル メモリアル インスティテュート Telecommunications systems and methods
JP2003088561A (en) * 2001-09-20 2003-03-25 Aiphone Co Ltd Information display board for hospital
JP2006031512A (en) * 2004-07-20 2006-02-02 Sony Corp Memory card, communication control method for memory card, electronic equipment, and radio communication system

Also Published As

Publication number Publication date
JP2631664B2 (en) 1997-07-16

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Legal Events

Date Code Title Description
LAPS Cancellation because of no payment of annual fees