JPS57112143A - System for transmission and reception of electric signal - Google Patents

System for transmission and reception of electric signal

Info

Publication number
JPS57112143A
JPS57112143A JP55187880A JP18788080A JPS57112143A JP S57112143 A JPS57112143 A JP S57112143A JP 55187880 A JP55187880 A JP 55187880A JP 18788080 A JP18788080 A JP 18788080A JP S57112143 A JPS57112143 A JP S57112143A
Authority
JP
Japan
Prior art keywords
coils
form section
fixed
magnetic
substances
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.)
Pending
Application number
JP55187880A
Other languages
Japanese (ja)
Inventor
Kenji Kawabe
Hirohide Miwa
Osamu Hayashi
Nobushi Iwashita
Atsuo Iida
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.)
Fujitsu Ltd
Original Assignee
Fujitsu 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 Fujitsu Ltd filed Critical Fujitsu Ltd
Priority to JP55187880A priority Critical patent/JPS57112143A/en
Publication of JPS57112143A publication Critical patent/JPS57112143A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B5/00—Near-field transmission systems, e.g. inductive or capacitive transmission systems

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Near-Field Transmission Systems (AREA)

Abstract

PURPOSE:To propagate an electric signal and power without contact, by providing coils in respective materials moving relatively and by coupling coils as a transformer in the time when respective materials face to each other. CONSTITUTION:A disc-shaped magnetic substance 6b having an L-form section and a magnetic substance 6c having a T-form section are fixed to a cylindrical nonmagnetic substance 6a, and coils 8 and 9 are wound around magnetic substances 6b and 6c to constitute a moving material. Meanwhile, a magnetic substance 7a having a recess-form section and magnetic substances 7d and 7e having an L-form section are fixed to plates 7b and 7c of nonmagnetic substances, and coils 10-13 are arranged on magnetic substances 7a, 7d, and 7e to constitute a fixed material. The moving material moves along the fixed material while rotating in the direction of an arrow III to propagate signals and power by coupling of coils. This device is applied for an ultrasonic beam scanner.
JP55187880A 1980-12-29 1980-12-29 System for transmission and reception of electric signal Pending JPS57112143A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP55187880A JPS57112143A (en) 1980-12-29 1980-12-29 System for transmission and reception of electric signal

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP55187880A JPS57112143A (en) 1980-12-29 1980-12-29 System for transmission and reception of electric signal

Publications (1)

Publication Number Publication Date
JPS57112143A true JPS57112143A (en) 1982-07-13

Family

ID=16213811

Family Applications (1)

Application Number Title Priority Date Filing Date
JP55187880A Pending JPS57112143A (en) 1980-12-29 1980-12-29 System for transmission and reception of electric signal

Country Status (1)

Country Link
JP (1) JPS57112143A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4985922A (en) * 1988-07-27 1991-01-15 Grumman Aerospace Corporation Signal and power transmission through a wall
JPWO2007043626A1 (en) * 2005-10-14 2009-04-16 インターナショナル・ビジネス・マシーンズ・コーポレーションＩｎｔｅｒｎａｔｉｏｎａｌ Ｂｕｓｉｎｅｓｓ Ｍａｓｃｈｉｎｅｓ Ｃｏｒｐｏｒａｔｉｏｎ Electromagnetic induction type RFID tag and access device

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS52135113A (en) * 1976-05-08 1977-11-11 Japanese National Railways<Jnr> Thyrister linear motor control induction radio line

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS52135113A (en) * 1976-05-08 1977-11-11 Japanese National Railways<Jnr> Thyrister linear motor control induction radio line

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4985922A (en) * 1988-07-27 1991-01-15 Grumman Aerospace Corporation Signal and power transmission through a wall
JPWO2007043626A1 (en) * 2005-10-14 2009-04-16 インターナショナル・ビジネス・マシーンズ・コーポレーションＩｎｔｅｒｎａｔｉｏｎａｌ Ｂｕｓｉｎｅｓｓ Ｍａｓｃｈｉｎｅｓ Ｃｏｒｐｏｒａｔｉｏｎ Electromagnetic induction type RFID tag and access device
JP4639234B2 (en) * 2005-10-14 2011-02-23 インターナショナル・ビジネス・マシーンズ・コーポレーション Access device, RFID system, and article management method

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