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WO1999012065A1 - Appareil electrique - Google Patents

Appareil electrique Download PDF

Info

Publication number
WO1999012065A1
WO1999012065A1 PCT/DE1998/001118 DE9801118W WO9912065A1 WO 1999012065 A1 WO1999012065 A1 WO 1999012065A1 DE 9801118 W DE9801118 W DE 9801118W WO 9912065 A1 WO9912065 A1 WO 9912065A1
Authority
WO
WIPO (PCT)
Prior art keywords
components
light signals
electrical device
light
transmitting
Prior art date
Application number
PCT/DE1998/001118
Other languages
German (de)
English (en)
Inventor
Stefan Rychlak
Original Assignee
Robert Bosch Gmbh
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 Robert Bosch Gmbh filed Critical Robert Bosch Gmbh
Publication of WO1999012065A1 publication Critical patent/WO1999012065A1/fr

Links

Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/24—Coupling light guides
    • G02B6/42—Coupling light guides with opto-electronic elements
    • G02B6/43—Arrangements comprising a plurality of opto-electronic elements and associated optical interconnections
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K1/00—Printed circuits
    • H05K1/02—Details
    • H05K1/0274—Optical details, e.g. printed circuits comprising integral optical means

Definitions

  • the invention is based on an electrical device, in particular a car radio, in which several components communicating with one another are arranged, according to the preamble of the main claim.
  • multilayer printed circuit boards are increasingly being used, in which a plurality of interconnect levels which are insulated from one another are stacked one above the other.
  • the manufacture of such multilayer printed circuit boards is relatively complex and accordingly expensive.
  • a connection of the components communicating via light signals by means of light guides enables simple targeted addressing of a addressed component, since, due to the lack of scattered light, further components not connected to the light guide do not record a signal.
  • the light guides can advantageously already during the manufacture of the actual circuit board, i.e. be applied to the circuit board in the form of light-conducting material before they are fitted with components.
  • FIG. 1 shows the printed circuit board of an electrical device with components arranged thereon that communicate with one another via light signals, the data being transmitted here in the form of light-directional radio,
  • FIG. 2 shows the same printed circuit board in a side view and FIG. 3 shows the printed circuit board of an electrical device, on which, in turn, assemblies communicating with one another via light signals are arranged, in which case the data transmission between the individual components takes place via light guides.
  • FIG. 1 shows an example of the top view of a printed circuit board 10 of a car radio, on which several components 12 to 20 communicating with one another are arranged.
  • the components shown here are, for example, a device processor 12, an operating unit 14, a receiving part 16, hereinafter also referred to as an HF part, a display unit 18 and a decoder 20 for using the radio data system (RDS ) of information received via a received radio broadcast frequency.
  • RDS radio data system
  • a visual connection is established via a deflecting mirror 25.
  • This deflecting mirror 25 can be, for example, one with a reflecting surface, act, for example, a mirror film, provided, which is already placed at this point further electronic component.
  • the various components 14 to 20 of the device according to the invention communicate with one another via the central device processor 12 by means of directional radio, that is to say by means of light signals emitted specifically from a transmitting to a receiving unit.
  • the transmitting and receiving units 13 to 21 comprise transmission means, for example in the form of laser diodes, which emit strongly bundled light to the addressed transmitting and receiving unit.
  • the transmitting and receiving units also contain receiving means, e.g. Photo transistors, which have only a very limited viewing angle, so that any incident stray light, e.g. is reflected by a housing wall of the device, has no influence on the data transmission.
  • Such directional radio transmission requires an exact alignment of the transmitting and receiving units 13 to 21, which is achieved, for example, by dowel pins molded onto the housing of the transmitting and receiving units, which engage in fitting holes in the printed circuit board when the transmitting and receiving units are placed on the printed circuit board can be.
  • a special addressing method for specifically addressing a component is not necessary.
  • the light signals are not emitted in a directed manner, but are radiated diffusely. This means that all components involved in light signal transmission access the same transmission channel.
  • the addressing of a certain component can take place in that the sending component light signals with such a wave radiates length that is permanently assigned to the addressed component.
  • a wavelength-specific evaluation of received light signals can be ensured in that the receiving means of the transmitting and receiving units 13 to 21 are preceded by color filters which completely or at least largely absorb such light that lies outside the wavelength range intended for them.
  • a third embodiment of the invention provides that in turn all components of the device involved in the light signal transmission access a common transmission channel.
  • addressing and access methods which are well known from communications technology can also be used. For example, addressing certain components by means of digital data words is possible, with, for example, each data frame to be transmitted being preceded by the address of the component (s) to be addressed in the form of a digital data word.
  • FIG. 3 the components communicating with one another via light signals or the transmitter and receiver units assigned to them are connected to one another via optical waveguides 26.
  • the optical fibers 26 mentioned can each communicate with the components that communicate with one another. connect others directly, or, as shown in FIG. 3, represent a common transmission channel for all components participating in the light signal transmission.
  • One possibility is represented by pulse-modulated signals, with a pulse code assigned to this addressing a special component, e.g. is preceded by a message.
  • connection box 30 is additionally arranged on the circuit board according to FIG have been converted, from which amplified audio signals transmitted within the device in the form of electrical signals 27, for example output from the output stage of the car radio, can be tapped, and which finally comprises a connection socket 32 via which a device which transmits or receives light signals directly to the fiber optic bus 26 of the car radio can be connected.
  • an optical fiber 26 is used to connect the components (12, 14, 16, 18, 20) participating in the communication by means of light signals, this can either be laid with conventional optical fiber materials in the form of flying wiring between the individual components, or how in the present case, are already applied to the printed circuit board by means of a printing process during the production thereof.
  • the light guides 26 can be guided over copper conductor tracks without problems, since crosstalk between the signals transmitted via the copper conductor tracks and the light signals is practically excluded.
  • the light guide tracks are made sufficiently strong, via elements already arranged on the circuit board, such as e.g. integrated circuits. These are then cast in through the conductor material.

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Engineering & Computer Science (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Optical Communication System (AREA)

Abstract

L'invention concerne un appareil électrique, notamment un autoradio, dans lequel sont disposés plusieurs composants (12, 14, 16, 18, 20) communiquant les uns avec les autres, au moins deux de ces composants communiquant entre eux par l'intermédiaire de signaux lumineux. La transmission des signaux lumineux peut s'effectuer, pour l'adressage de composants spécifiques, en faisceau, c'est-à-dire par l'intermédiaire de la lumière diffusée par rayonnement en faisceau ou bien par l'intermédiaire de fibres optiques (26), ou bien, pour l'accès à tous les composants, sur un canal de transmission commun par multiplexage par répartition en longueur d'onde ou encore un autre procédé d'adressage et d'accès connu dans la technique des communications.
PCT/DE1998/001118 1997-09-03 1998-04-22 Appareil electrique WO1999012065A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE1997138416 DE19738416A1 (de) 1997-09-03 1997-09-03 Elektrisches Gerät
DE19738416.1 1997-09-03

Publications (1)

Publication Number Publication Date
WO1999012065A1 true WO1999012065A1 (fr) 1999-03-11

Family

ID=7841019

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/DE1998/001118 WO1999012065A1 (fr) 1997-09-03 1998-04-22 Appareil electrique

Country Status (2)

Country Link
DE (1) DE19738416A1 (fr)
WO (1) WO1999012065A1 (fr)

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58200642A (ja) * 1982-05-18 1983-11-22 Fujitsu Ltd 波長分割多重型光バス方式
DE3908786A1 (de) * 1989-03-17 1989-08-03 Cordell Steve Verfahren zur informationsuebertragung zwischen platinen einer elektronischen schaltung
WO1992015906A1 (fr) * 1991-02-27 1992-09-17 The University Of North Carolina At Charlotte Appareil et procede pour interconnexions optiques programmables
WO1993005590A1 (fr) * 1991-09-06 1993-03-18 Framatome Dispositif de transmission d'informations par voie optique entre differents circuits electroniques
EP0537046A2 (fr) * 1991-10-08 1993-04-14 Thomson-Csf Ensemble d'interconnexion optique pour cartes électroniques
DE4434727C1 (de) * 1994-09-28 1996-02-01 Siemens Ag Träger für einschiebbare elektrische Baugruppen

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58200642A (ja) * 1982-05-18 1983-11-22 Fujitsu Ltd 波長分割多重型光バス方式
DE3908786A1 (de) * 1989-03-17 1989-08-03 Cordell Steve Verfahren zur informationsuebertragung zwischen platinen einer elektronischen schaltung
WO1992015906A1 (fr) * 1991-02-27 1992-09-17 The University Of North Carolina At Charlotte Appareil et procede pour interconnexions optiques programmables
WO1993005590A1 (fr) * 1991-09-06 1993-03-18 Framatome Dispositif de transmission d'informations par voie optique entre differents circuits electroniques
EP0537046A2 (fr) * 1991-10-08 1993-04-14 Thomson-Csf Ensemble d'interconnexion optique pour cartes électroniques
DE4434727C1 (de) * 1994-09-28 1996-02-01 Siemens Ag Träger für einschiebbare elektrische Baugruppen

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 008, no. 044 (E - 229) 25 February 1984 (1984-02-25) *

Also Published As

Publication number Publication date
DE19738416A1 (de) 1999-03-04

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