JPS58200644A - Optical bus system - Google Patents
Optical bus systemInfo
- Publication number
- JPS58200644A JPS58200644A JP57083825A JP8382582A JPS58200644A JP S58200644 A JPS58200644 A JP S58200644A JP 57083825 A JP57083825 A JP 57083825A JP 8382582 A JP8382582 A JP 8382582A JP S58200644 A JPS58200644 A JP S58200644A
- Authority
- JP
- Japan
- Prior art keywords
- duct
- light
- devices
- electric terminals
- optical bus
- 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
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
- H04B10/80—Optical aspects relating to the use of optical transmission for specific applications, not provided for in groups H04B10/03 - H04B10/70, e.g. optical power feeding or optical transmission through water
- H04B10/801—Optical aspects relating to the use of optical transmission for specific applications, not provided for in groups H04B10/03 - H04B10/70, e.g. optical power feeding or optical transmission through water using optical interconnects, e.g. light coupled isolators, circuit board interconnections
- H04B10/803—Free space interconnects, e.g. between circuit boards or chips
-
- 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
- G02B6/26—Optical coupling means
- G02B6/28—Optical coupling means having data bus means, i.e. plural waveguides interconnected and providing an inherently bidirectional system by mixing and splitting signals
- G02B6/2804—Optical coupling means having data bus means, i.e. plural waveguides interconnected and providing an inherently bidirectional system by mixing and splitting signals forming multipart couplers without wavelength selective elements, e.g. "T" couplers, star couplers
- G02B6/2808—Optical coupling means having data bus means, i.e. plural waveguides interconnected and providing an inherently bidirectional system by mixing and splitting signals forming multipart couplers without wavelength selective elements, e.g. "T" couplers, star couplers using a mixing element which evenly distributes an input signal over a number of outputs
-
- 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
- G02B6/26—Optical coupling means
- G02B6/28—Optical coupling means having data bus means, i.e. plural waveguides interconnected and providing an inherently bidirectional system by mixing and splitting signals
- G02B6/2804—Optical coupling means having data bus means, i.e. plural waveguides interconnected and providing an inherently bidirectional system by mixing and splitting signals forming multipart couplers without wavelength selective elements, e.g. "T" couplers, star couplers
- G02B6/2817—Optical coupling means having data bus means, i.e. plural waveguides interconnected and providing an inherently bidirectional system by mixing and splitting signals forming multipart couplers without wavelength selective elements, e.g. "T" couplers, star couplers using reflective elements to split or combine optical signals
-
- 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
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Electromagnetism (AREA)
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Light Guides In General And Applications Therefor (AREA)
- Small-Scale Networks (AREA)
- Optical Communication System (AREA)
Abstract
Description
【発明の詳細な説明】
発明の技術分野
本発明は、閉塞空間（ダクト）内の光散乱を利用する光
バス方式に関し、光通信に必要な発光および受光素子を
ダクト内蔵型としたものである。[Detailed Description of the Invention] Technical Field of the Invention The present invention relates to an optical bus system that utilizes light scattering within a closed space (duct), and includes a light emitting and light receiving element necessary for optical communication built into the duct. .
技術の背景
１つの情報処理装置では、該装置を構成する複数の回路
ブロック（プリント基板、パネル等で区分される）相互
間で種々の信号伝送を行なう必要があり、また必要に応
じて他装置との間で信号授受を行なうこともある。この
ような場合に必要な伝送路の数は一般に多大なものとな
り、この傾向はＬＳＩの進歩に伴ない１つの装置で扱い
得るデータ量が増加するにつれ顕著となる。Background of the Technology In an information processing device, it is necessary to perform various signal transmissions between multiple circuit blocks (divided by printed circuit boards, panels, etc.) that make up the device, and also to transmit signals to other devices as necessary. Signals may also be exchanged between the two. In such a case, the number of transmission paths required is generally large, and this tendency becomes more noticeable as the amount of data that can be handled by one device increases as LSI advances.
従来技術と問題点
従来は上述した伝送路を同軸ケーブルやベア線で構成す
るのが一般的であるが、これでは多数の伝送路を構成す
るのに多くのケーブル類を布設する必要があり、その投
置スペース、工事、拡張性等に難がある。またデータの
高速化に伴ないケーブル間の干渉やアース電位差の相違
なども無視できなくなる。Conventional technology and problems Conventionally, the above-mentioned transmission lines have generally been constructed using coaxial cables or bare wires, but this requires the installation of many cables to construct a large number of transmission lines. There are problems with the installation space, construction work, expandability, etc. Furthermore, as data speeds increase, interference between cables and differences in ground potential cannot be ignored.
発明の目的
本発明は、閉塞空間内の光散乱を利用することにより、
複数の装置相互間で簡易に且つ汎用性に富んだ信号伝送
を可能とするものである。なおここで装置とは独立のケ
ースを有する通常の意味での装置の他に、共通ケース内
に収められた各パネルなどの回路ブロックも含むものと
する。Purpose of the Invention The present invention utilizes light scattering within a closed space to
This enables simple and versatile signal transmission between a plurality of devices. Note that in addition to a device in the usual sense having a case independent of the device, the term also includes circuit blocks such as panels housed in a common case.
発明の構成
本発明は、内面が光を反射させる中空状のダクトを複数
の装置に共通に設け、また該装置からの電気信号を光に
変換して該ダクト内に散乱させる発光素子と該ダクト内
の光を電気信号に変換して該装置へ伝達する受光素子と
を複数個予め該ダクト内に配設し、さらに各発光素子お
よび受光素子からは該ダクト外に電気端子を引き出して
おき、前記装置を任意の該電気端子に接続することによ
り装置相互間で光散乱による信号伝送を可能とすること
を特徴とするものである。Structure of the Invention The present invention provides a hollow duct whose inner surface reflects light, which is commonly provided in a plurality of devices, and a light emitting element which converts an electrical signal from the device into light and scatters it within the duct, and the duct. A plurality of light-receiving elements for converting the light inside into electrical signals and transmitting them to the device are arranged in advance in the duct, and furthermore, electrical terminals are drawn out from each light-emitting element and the light-receiving element to the outside of the duct, By connecting the device to any of the electrical terminals, it is possible to transmit signals between the devices by light scattering.
発明の実施例
以下、図示の実施例を参照しながらこれを詳細に説明す
る。図においてｌは装置特にそのケース、２はダクト、
４は発光素子、５は受光素子、６は素子４，５をダクト
２内・で支持し且つそれらの電気、、１１イ１□、１゜
や％ｔ！−ｒ ｍオヨえ、２．７゜７′は複数のパネル
、８は制御回路、９は発光素子４の駆動回路、ｌＯは受
光素子５からの電気信号を増幅する回路、１３．１４は
電気端子１１゜１２と駆動回路９、増幅回路１０を接続
するリード線である。ダクト２は両端閉鎖の中空状の筒
体で、内部に光反射性の閉塞空間を形成する。そして、
発光素子４からの光はダクト２の内面で繰り返し反射し
て一様に拡散し、減衰消滅する。従って受光素子５はど
の位置の発光素子からの光でも受光できる。ダクト２は
完全に閉塞されているので外光が入る恐れはなく、Ｓ／
Ｎの良好な交信を行なえる−。ダクトは剛体、柔軟体い
ずれでもよく、軟性の場合ダクト２は湾曲できこれでも
光伝送に問題はない、なおダクト２については本出願人
が同時に出願した明細書に詳述されている。DESCRIPTION OF THE PREFERRED EMBODIMENTS The invention will now be described in detail with reference to illustrated embodiments. In the figure, l is the device, especially its case, 2 is the duct,
4 is a light-emitting element, 5 is a light-receiving element, 6 supports the elements 4 and 5 in the duct 2 and their electricity, 11i1□, 1° and %t! -r m Oyo, 2.7°7' is a plurality of panels, 8 is a control circuit, 9 is a drive circuit for the light emitting element 4, lO is a circuit for amplifying the electrical signal from the light receiving element 5, 13.14 is an electrical These are lead wires that connect the terminals 11 and 12 to the drive circuit 9 and the amplifier circuit 10. The duct 2 is a hollow cylinder with both ends closed, and forms a light-reflective closed space inside. and,
The light from the light emitting element 4 is repeatedly reflected on the inner surface of the duct 2, uniformly diffused, and attenuated and extinguished. Therefore, the light receiving element 5 can receive light from the light emitting element at any position. Since duct 2 is completely closed, there is no risk of outside light entering the S/
N can perform good communication. The duct may be either rigid or flexible; if it is flexible, the duct 2 can be curved and there is no problem with light transmission; the duct 2 is detailed in the specification filed simultaneously by the applicant.
本発明ではダクト２内に予め複数の発光素子４と受光素
子５が配設してあり、パネル７または７は任意の位置の
コネクタ６に結合するだけで該ダクト内の光バスを使用
できる。従って、パネル１１１
を増設する場合にも何ら伝送路布設等の工事は必要とな
らない。図面ではパネル７から７゛の信号を伝送してい
る様子を示しているが、同時に逆方向の信号伝送も可能
である。このためには種々の多重化方式を採用する。例
えば使用する光の波長を異ならせる波長多重、或いは興
なるキャリアを電気信号で予変調してから光に変換する
周波数多重等である。また、発光素子４からの光は指向
性を持たないほどよいので、更に拡散性を向上するため
には図面で１素子と示しである部分を複数の素子で構成
してもよい。また受光素子も複数とし各々に異なる特性
の光学フィルタを配設して、各装置が送出する異なる波
長の光をそれぞれの受光素子が受信するようにしてもよ
い。In the present invention, a plurality of light emitting elements 4 and light receiving elements 5 are arranged in advance in the duct 2, and the optical bus in the duct can be used by simply connecting the panel 7 or 7 to the connector 6 at an arbitrary position. Therefore, even when adding more panels 111, no construction work such as laying a transmission line is required. Although the drawing shows a state in which a 7' signal is transmitted from the panel 7, it is also possible to transmit signals in the opposite direction at the same time. Various multiplexing schemes are employed for this purpose. Examples include wavelength multiplexing, which uses different wavelengths of light, or frequency multiplexing, which premodulates the desired carrier with an electrical signal and then converts it into light. Further, since it is better that the light from the light emitting element 4 has no directivity, in order to further improve the diffusivity, the portion shown as one element in the drawings may be composed of a plurality of elements. Further, there may be a plurality of light receiving elements, each of which is provided with an optical filter having a different characteristic, so that each light receiving element receives light of a different wavelength transmitted from each device.
発明の効果
以上述べたように本発明によれば、所定数の発光および
受光素子を内蔵し外部へ電気端子を取出したダクトを共
通に設は各装置は該電気端子へ結線するだけで複数の装
置（またはパネル）間で信号伝送が可能となる。このダ
クトは伝送路と共に交換機の如き機能を有するので、多
装置間交信に必要な組合せ（多装置から任意の２装置を
取出す組合せ）的な多数の配線は不要となる。またダク
ト内は光通信であるがダクトへの入出力は電気式である
から装置（パネル）の設置場所を予め決める必要がない
、アースを分離できる等の利点がある。Effects of the Invention As described above, according to the present invention, a duct containing a predetermined number of light-emitting and light-receiving elements and leading to an external electrical terminal is installed in common, and each device can be connected to a plurality of devices simply by connecting to the electrical terminal. Enables signal transmission between devices (or panels). Since this duct has a function similar to a switching equipment together with a transmission path, a large number of wires required for communication between multiple devices (combinations for connecting arbitrary two devices from multiple devices) are not required. In addition, although the inside of the duct is optical communication, the input and output to the duct is electrical, so there are advantages such as there is no need to decide in advance the installation location of the device (panel), and the ground can be separated.
こうして簡易で汎用性に富みしかも安定性に優れた安価
な光バスを構成できる利点がある。In this way, there is an advantage that a simple, versatile, and inexpensive optical bus with excellent stability can be constructed.
図面は本発明の一実施例を示す構成図である。
図中、ｌは装置、２はダクト、４は発光素子、５は受光
素子、６はコネクタ、７，７′はパネル（狭義の装置）
である。
出願人 富士通株式会社
代理人弁理士 青 柳 稔The drawing is a configuration diagram showing an embodiment of the present invention. In the figure, l is the device, 2 is the duct, 4 is the light emitting element, 5 is the light receiving element, 6 is the connector, 7 and 7' are the panels (devices in a narrow sense)
It is. Applicant Fujitsu Limited Representative Patent Attorney Minoru Aoyagi
Claims (1)
通に投け、また該装置からの電気信号を光に変換して該
ダクト内に散乱させる発光素子と該ダクト内の光を電気
信号に変換して該装置へ伝達する受光素子とを複数個予
め該ダクト内に配設し、さらに各発光素子および受光素
子からは該ダクト外に電気端子を引き出しておき、前記
装置を任意の該電気端子に接続することにより装置相互
間で光散乱による信号伝送を可能とすることを特、
徹とする光バス方式。A hollow duct whose inner surface reflects light is shared by multiple devices, and a light emitting element converts the electrical signal from the device into light and scatters it inside the duct, and the light inside the duct is converted into an electrical signal. A plurality of light-receiving elements are arranged in advance in the duct, and electric terminals are drawn out from each light-emitting element and light-receiving element to the outside of the duct. In particular, it enables signal transmission by light scattering between devices by connecting to electrical terminals.
Thorough optical bus method.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP57083825A JPS58200644A (en) | 1982-05-18 | 1982-05-18 | Optical bus system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP57083825A JPS58200644A (en) | 1982-05-18 | 1982-05-18 | Optical bus system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS58200644A true JPS58200644A (en) | 1983-11-22 |
Family
ID=13813460
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP57083825A Pending JPS58200644A (en) | 1982-05-18 | 1982-05-18 | Optical bus system |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS58200644A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0484912A2 (en) * | 1990-11-06 | 1992-05-13 | Sony Corporation | Portable electronic apparatus |
| WO1993012585A1 (en) * | 1991-12-11 | 1993-06-24 | Motorola, Inc. | Integrated circuit module with devices interconnected by electromagnetic waves |
| JP2011135520A (en) * | 2009-12-25 | 2011-07-07 | Autonetworks Technologies Ltd | Optical communication device, communication harness, and communication system |
-
1982
- 1982-05-18 JP JP57083825A patent/JPS58200644A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0484912A2 (en) * | 1990-11-06 | 1992-05-13 | Sony Corporation | Portable electronic apparatus |
| WO1993012585A1 (en) * | 1991-12-11 | 1993-06-24 | Motorola, Inc. | Integrated circuit module with devices interconnected by electromagnetic waves |
| US5335361A (en) * | 1991-12-11 | 1994-08-02 | Motorola, Inc. | Integrated circuit module with devices interconnected by electromagnetic waves |
| JP2011135520A (en) * | 2009-12-25 | 2011-07-07 | Autonetworks Technologies Ltd | Optical communication device, communication harness, and communication system |
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