WO1994011977A1 - Coupleur de signal a bague collectrice sans contact - Google Patents

Coupleur de signal a bague collectrice sans contact Download PDF

Info

Publication number
WO1994011977A1
WO1994011977A1 PCT/US1993/010570 US9310570W WO9411977A1 WO 1994011977 A1 WO1994011977 A1 WO 1994011977A1 US 9310570 W US9310570 W US 9310570W WO 9411977 A1 WO9411977 A1 WO 9411977A1
Authority
WO
WIPO (PCT)
Prior art keywords
signal
output
transmitter
recited
input
Prior art date
Application number
PCT/US1993/010570
Other languages
English (en)
Inventor
Arthur Kenneth Collins
Fred Kleytman
Original Assignee
General Electric Company
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 General Electric Company filed Critical General Electric Company
Priority to JP6512185A priority Critical patent/JPH07503353A/ja
Publication of WO1994011977A1 publication Critical patent/WO1994011977A1/fr

Links

Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B6/00—Apparatus or devices for radiation diagnosis; Apparatus or devices for radiation diagnosis combined with radiation therapy equipment
    • A61B6/02—Arrangements for diagnosis sequentially in different planes; Stereoscopic radiation diagnosis
    • A61B6/03—Computed tomography [CT]
    • A61B6/032—Transmission computed tomography [CT]
    • A61B6/035—Mechanical aspects of CT
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B6/00—Apparatus or devices for radiation diagnosis; Apparatus or devices for radiation diagnosis combined with radiation therapy equipment
    • A61B6/56—Details of data transmission or power supply, e.g. use of slip rings
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L25/00—Baseband systems
    • H04L25/02—Details ; arrangements for supplying electrical power along data transmission lines
    • H04L25/0264—Arrangements for coupling to transmission lines
    • H04L25/0266—Arrangements for providing Galvanic isolation, e.g. by means of magnetic or capacitive coupling

Definitions

  • an X-ray source projects a fan-shaped beam which is collimated to lie within an X-Y plane of a Cartesian coordinate system, termed the "imaging plane".
  • the X-ray beam passes through the object being imaged, such as a medical patient, and impinges upon an array of radiation detectors.
  • the intensity of the transmitted radiation is dependent upon the attenuation of the X-ray beam by the object and each detector produces a separate electrical signal that is a measurement of the beam attenuation.
  • the attenuation measurements from all the detectors are acquired separately to produce the transmission profile.
  • a computed tomography (CT) imaging system 10 includes a gantry 12 representative of a "third generation" C scanner.
  • the gantry 12 includes an X-ray source 13 oriented to project a fan bea of X-rays 14 through imaged object 15 to detector array 16.
  • the detector array 16 is formed by a number of detector elements 18 which together detect a projected image resulting from the transmission of X-rays through the imaged object 15, such as a medical patient.
  • the gantry 12 includes a stationary frame 12a within which a movable frame 12b and components mounted thereon revolve about a center of rotation 19 located within the object 15.

Landscapes

  • Engineering & Computer Science (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Medical Informatics (AREA)
  • Radiology & Medical Imaging (AREA)
  • Molecular Biology (AREA)
  • Biophysics (AREA)
  • High Energy & Nuclear Physics (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
  • Optics & Photonics (AREA)
  • Pathology (AREA)
  • Veterinary Medicine (AREA)
  • Biomedical Technology (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Physics & Mathematics (AREA)
  • Surgery (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Pulmonology (AREA)
  • Power Engineering (AREA)
  • Theoretical Computer Science (AREA)
  • Signal Processing (AREA)
  • Apparatus For Radiation Diagnosis (AREA)

Abstract

Appareil permettant d'envoyer des données numériques entre des premier (12b) et deuxième (12a) constituants qui tournent l'un par rapport à l'autre autour d'un axe (19). Un émetteur (40) monté sur le premier constituant (12b) produit un signal de sortie qui présente une impulsion à chaque fois que les données numériques forment une ligne (51) de transmission d'état qui est attachée au premier constituant (12b) et s'étend autour de l'axe (19). Une ligne (57) de transmission de réception est fixée sur l'autre constituant (12a) et se courbe autour de l'axe (19) adjacent à l'élément (51) de transmission. Un circuit (60) produit une transition d'état dans un signal de sortie numérique à chaque fois qu'un signal électrique provenant de la ligne (57) de transmission de réception dépasse un niveau de référence.
PCT/US1993/010570 1992-11-18 1993-11-03 Coupleur de signal a bague collectrice sans contact WO1994011977A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP6512185A JPH07503353A (ja) 1992-11-18 1993-11-03 無接触スリップリング信号結合器

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US97793992A 1992-11-18 1992-11-18
US07/977,939 1992-11-18

Publications (1)

Publication Number Publication Date
WO1994011977A1 true WO1994011977A1 (fr) 1994-05-26

Family

ID=25525667

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US1993/010570 WO1994011977A1 (fr) 1992-11-18 1993-11-03 Coupleur de signal a bague collectrice sans contact

Country Status (2)

Country Link
JP (1) JPH07503353A (fr)
WO (1) WO1994011977A1 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1999044683A1 (fr) * 1998-03-06 1999-09-10 Intermedics Inc. Dispositif medical implantable ayant une fonction de transmission de donnees a champ electrique variable
WO2002028039A1 (fr) * 2000-09-29 2002-04-04 Siemens Aktiengesellschaft Procede pour transmettre un flux de donnees binaire haute frequence sur une voie de communication a isolation galvanique
US6853685B1 (en) 1998-07-17 2005-02-08 Stephan Konrad Circuit arrangement for the electrically isolated transfer of digital signals
NL1027798C2 (nl) * 2003-12-17 2006-07-25 Ge Med Sys Global Tech Co Llc Systeem en werkwijze voor gegevensslipringverbinding.

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6292919B1 (en) * 1998-08-25 2001-09-18 General Electric Company Methods and apparatus for exchanging data in an imaging system

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4450572A (en) * 1982-05-07 1984-05-22 Digital Equipment Corporation Interface for serial data communications link
US4847702A (en) * 1986-06-12 1989-07-11 Willi Studer Ag Method and apparatus for converting a binary signal
US4876615A (en) * 1986-10-31 1989-10-24 Nakamichi Corporation Data decoding system
US5010254A (en) * 1989-04-05 1991-04-23 Kabushiki Kaisha Toshiba System for communicating energy between relatively moving devices
US5157393A (en) * 1989-02-28 1992-10-20 Kabushiki Kaisha Toshiba Communication system for transmitting data between a transmitting antenna utilizing leaky coaxial cable and a receive antenna in relative movement to one another
US5192923A (en) * 1990-06-13 1993-03-09 Sony Corporation Rotary coupler

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4450572A (en) * 1982-05-07 1984-05-22 Digital Equipment Corporation Interface for serial data communications link
US4450572B1 (fr) * 1982-05-07 1994-01-25 Digital Equipment Corporation
US4847702A (en) * 1986-06-12 1989-07-11 Willi Studer Ag Method and apparatus for converting a binary signal
US4876615A (en) * 1986-10-31 1989-10-24 Nakamichi Corporation Data decoding system
US5157393A (en) * 1989-02-28 1992-10-20 Kabushiki Kaisha Toshiba Communication system for transmitting data between a transmitting antenna utilizing leaky coaxial cable and a receive antenna in relative movement to one another
US5010254A (en) * 1989-04-05 1991-04-23 Kabushiki Kaisha Toshiba System for communicating energy between relatively moving devices
US5192923A (en) * 1990-06-13 1993-03-09 Sony Corporation Rotary coupler

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1999044683A1 (fr) * 1998-03-06 1999-09-10 Intermedics Inc. Dispositif medical implantable ayant une fonction de transmission de donnees a champ electrique variable
US6141592A (en) * 1998-03-06 2000-10-31 Intermedics Inc. Data transmission using a varying electric field
US6853685B1 (en) 1998-07-17 2005-02-08 Stephan Konrad Circuit arrangement for the electrically isolated transfer of digital signals
WO2002028039A1 (fr) * 2000-09-29 2002-04-04 Siemens Aktiengesellschaft Procede pour transmettre un flux de donnees binaire haute frequence sur une voie de communication a isolation galvanique
NL1027798C2 (nl) * 2003-12-17 2006-07-25 Ge Med Sys Global Tech Co Llc Systeem en werkwijze voor gegevensslipringverbinding.

Also Published As

Publication number Publication date
JPH07503353A (ja) 1995-04-06

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