JP2770428B2 - Traffic signal controller monitoring and control device - Google Patents
Traffic signal controller monitoring and control deviceInfo
- Publication number
- JP2770428B2 JP2770428B2 JP1151488A JP15148889A JP2770428B2 JP 2770428 B2 JP2770428 B2 JP 2770428B2 JP 1151488 A JP1151488 A JP 1151488A JP 15148889 A JP15148889 A JP 15148889A JP 2770428 B2 JP2770428 B2 JP 2770428B2
- Authority
- JP
- Japan
- Prior art keywords
- line
- unit
- traffic signal
- tdm
- tdm type
- 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.)
- Expired - Fee Related
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- Traffic Control Systems (AREA)
- Selective Calling Equipment (AREA)
Description
【発明の詳細な説明】 産業上の利用分野 本発明は、複数のDC−TDM形交通信号制御機及びFS−T
DM形交通信号制御機を回線により接続し、その監視制御
を行う交通信号制御機監視制御装置に関する。The present invention relates to a plurality of DC-TDM traffic signal controllers and an FS-T.
The present invention relates to a traffic signal controller monitoring and control device that connects a DM type traffic signal controller by a line and performs monitoring and control thereof.
従来の技術 現在、交通信号制御機には警察庁が制定、発行する警
交仕規によりその基本仕様（通信方式、データフォーマ
ットを含む）が定められた幾つかの機種がある。交通信
号制御機監視制御装置に回線接続される交通信号制御機
の通信方式としては、多くの場合DC−TDM方式かFS−TDM
方式かを、両方式の特徴及び、長短を比較検討し、何れ
かの方式を採用している。両方式を混在制御できる交通
信号制御機監視制御装置において、DC−TDM形交通信号
制御機用回線数とFS−TDM形交通信号制御機用回線数と
の割合は、その交通信号制御機監視制御装置が設置され
る場所（多くの場合、県警察本部交通管制センター）
や、それぞれの交通信号制御機の設置場所等で、あらゆ
る場合がある。2. Description of the Related Art At present, there are several types of traffic signal controllers whose basic specifications (including a communication system and a data format) are determined by a police code established and issued by the National Police Agency. In most cases, the communication system of the traffic signal controller connected to the traffic signal controller monitoring and control device is DC-TDM or FS-TDM.
As for the method, the characteristics of both methods and the length and length are compared and examined, and either method is adopted. In a traffic signal controller monitoring and control device that can control both types of traffic signals, the ratio between the number of DC-TDM type traffic signal controller lines and the number of FS-TDM type traffic signal controller lines is determined by the traffic signal controller monitoring control. The place where the device is installed (in most cases, the traffic control center at the prefectural police headquarters)
In addition, there are all cases depending on the installation location of each traffic signal controller.
以下、従来の交通信号制御機監視制御装置について図
面を用いて説明する。第５図は従来の交通信号制御機監
視制御装置の概略ブロック図、第６図は外観構成図であ
る。第５図において11は中央処理部、12は記憶部、13は
DC−TDM形回線処理部、14はFS−TDM形回線処理部、15は
DC−TDM形回線対応ユニット、16はFS−TDM形回線対応ユ
ニットである。第６図において21は中央処理部、22は記
憶部、23はDC−TDM形回線処理部、24はFS−TDM形回線処
理部、25はDC−TDM形回線対応ユニット、26はFS−TDM形
回線対応ユニット、27はDC−TDM形回線処理部が制御す
る回線対応ユニット収容棚、28はFS−TDM形回線処理部
が制御する回線対応ユニット収容棚である。Hereinafter, a conventional traffic signal controller monitoring and control device will be described with reference to the drawings. FIG. 5 is a schematic block diagram of a conventional traffic signal controller monitoring and control device, and FIG. 6 is an external configuration diagram. In FIG. 5, 11 is a central processing unit, 12 is a storage unit, and 13 is
DC-TDM type line processing unit, 14 is FS-TDM type line processing unit, 15 is
A unit corresponding to the DC-TDM type line, 16 is a unit corresponding to the FS-TDM type line. In FIG. 6, 21 is a central processing unit, 22 is a storage unit, 23 is a DC-TDM type line processing unit, 24 is an FS-TDM type line processing unit, 25 is a DC-TDM type line compatible unit, and 26 is FS-TDM type line unit. A line-compatible unit, 27 is a line-compatible unit housing shelf controlled by the DC-TDM type line processing unit, and 28 is a line-compatible unit housing shelf controlled by the FS-TDM type line processing unit.
次に上記従来例の動作について説明する。 Next, the operation of the above conventional example will be described.
交通信号制御機に接続される回線は１回線について１
個の回線対応ユニット15,16,25,26に取り込まれる。回
線対応ユニット15,16,25,26は多くの場合、変復調回
路，直並列変換回路，アドレス制御回路等で構成され
る。従来の交通信号制御機監視制御装置では、この回線
対応ユニット15,16,25,26をある単位数（8,16,32等）分
制御する回線処理部13,14,23,24を有する。多くの場
合、回線対応ユニットはこの単位数でまとめられ、１つ
の棚27,28に収容される。回線処理部13,14,23,24は多く
の場合、マイコンを搭載し、それぞれの通信方式にあわ
せてデータの送受信やデータフォーマットの作成等を行
う。そして装置としてこの回線処理部13,14,23,24を複
数持ち、それを中央処理部11,21が制御することによ
り、１装置で多数の交通信号制御機に対する通信制御を
可能にしている。但し、前述したように回線処理部13,1
4,23,24はある単位数（8,16,32等）の回線対応ユニット
15,16,25,26についてその制御を行っており、回線対応
ユニット15,16,25,26の装置内における実装位置は、そ
のタイプにより制約され、任意の位置には実装できな
い。The number of lines connected to the traffic signal controller is 1 per line
It is taken into the line corresponding units 15, 16, 25, 26. In many cases, the line corresponding units 15, 16, 25, 26 are composed of a modulation / demodulation circuit, a serial / parallel conversion circuit, an address control circuit, and the like. The conventional traffic signal controller monitoring and control device has line processing units 13, 14, 23, and 24 for controlling the line corresponding units 15, 16, 25, 26 by a certain number (8, 16, 32, etc.). In many cases, the line corresponding units are put together in this number of units and stored in one shelf 27,28. In many cases, the line processing units 13, 14, 23, and 24 are equipped with a microcomputer, and perform transmission and reception of data, creation of a data format, and the like in accordance with each communication method. The apparatus has a plurality of line processing units 13, 14, 23, 24, which are controlled by the central processing units 11, 21, so that one apparatus can control communication with a large number of traffic signal controllers. However, as described above, the line processing units 13, 1
4,23,24 are line-compatible units of a certain number of units (8,16,32, etc.)
The control is performed for 15, 16, 25, and 26, and the mounting position of the line corresponding units 15, 16, 25, and 26 in the device is restricted by the type, and cannot be mounted at an arbitrary position.
従来の交通信号制御機監視制御装置でDC−TDM形交通
信号制御機とFS−TDM形交通信号制御機とを混在して制
御する場合、回線処理部13,14,23,24としてDC−TDM形回
線対応ユニット用13,23とFS−TDM形回線対応ユニット用
14,24との２タイプを持ち、それを使い分けることによ
り行っている。When the conventional traffic signal controller monitoring and control device controls the DC-TDM traffic signal controller and the FS-TDM traffic signal controller in a mixed manner, the DC-TDM is used as the line processing units 13, 14, 23, and 24. 13 and 23 for type line compatible units and for FS-TDM type line compatible unit
There are two types, 14,24, which are used by properly using them.
発明が解決しようとする課題 しかしながら、上記従来の交通信号制御機監視制御装
置では、DC−TDM形交通信号制御機とFS−TDM形交通信号
制御機との混在制御を行うとき、回線処理部の制御する
回線数単位でのみ混在が可能であり、その装置が制御可
能な最大回線数に対して、DC−TDM形交通信号制御機用
回線数とFS−TDM形交通信号制御機用回線数との割合が
回線処理部の制御する回線数単位毎に限定され、任意の
組み合わせの混在制御ができず、装置の制御できる最大
回線数が回線対応ユニットのタイプによって制約を受け
るという問題があった。また、回線対応ユニットの装置
内における実装位置を任意に決める事ができず、多くの
交通信号制御機すなわち多くの回線対応ユニットを制御
する交通信号制御機監視制御装置の運用，管理，保守上
で支障が生じる事があるという問題があった。However, in the conventional traffic signal controller monitoring and control device, when performing the mixed control of the DC-TDM type traffic signal controller and the FS-TDM type traffic signal controller, the line processing unit Mixing is possible only in units of the number of lines to be controlled, and the number of lines for DC-TDM traffic signal controllers and the number of lines for FS-TDM traffic signal controllers are Is limited for each unit of the number of lines controlled by the line processing unit, and it is not possible to perform mixed control of arbitrary combinations, and there is a problem that the maximum number of lines that can be controlled by the apparatus is restricted by the type of the line corresponding unit. In addition, it is not possible to arbitrarily determine the mounting position of the line corresponding unit in the device, and the operation, management, and maintenance of many traffic signal controllers, that is, the traffic signal controller monitoring and controlling devices that control many line corresponding units, are not possible. There was a problem that trouble might occur.
本発明は、このような従来の問題を解決するものであ
り、回線処理部が回線対応ユニットに設けられた回線識
別回路からの情報により、その回線対応ユニットがDC−
TDM形かFS−TDM形かを判断し、その結果に応じて各タイ
プ用の制御を行うことを可能とし、それによって、制御
可能な最大回線数に対して、DC−TDM形交通信号制御機
用回線数とFS−TDM形交通信号制御機用回線数との割合
を任意に決めることができる優れた交通信号制御機監視
制御装置を提供することを目的とするものである。The present invention is to solve such a conventional problem, and a line processing unit uses a line identification circuit provided by a line identification unit to determine whether the line associated unit is DC-based.
It is possible to judge whether it is TDM type or FS-TDM type, and to perform control for each type in accordance with the result, whereby the DC-TDM type traffic signal controller can be controlled for the maximum number of controllable lines. It is an object of the present invention to provide an excellent traffic signal controller monitoring and control device capable of arbitrarily determining the ratio between the number of service lines and the number of FS-TDM type traffic signal controller lines.
課題を解決するための手段 本発明は上記目的を達成するために、回線対応ユニッ
トに回線識別回路を設け、回線処理部のマイコンがこの
回線識別回路からの情報により、その回線対応ユニット
がDC−TDM形かFS−TDM形かを判断し、その結果に応じて
各タイプ用の制御を行う機能を設け、回線処理部がDC−
TDM形回線対応ユニットとFS−TDM形回線対応ユニットを
混在制御でき、すなわち装置として制御可能な最大回線
数に対して、DC−TDM形交通通信号制御機用回線数とFS
−TDM形交通信号制御機用回線数との割合を任意に決め
ることができるように構成したものである。Means for Solving the Problems According to the present invention, in order to achieve the above object, a line identification circuit is provided in a line corresponding unit, and a microcomputer of a line processing unit uses the information from the line identification circuit to determine whether the line corresponding unit is a DC-DC converter. A function to judge whether it is TDM type or FS-TDM type, and to control each type according to the result is provided.
The TDM line compatible unit and the FS-TDM type compatible unit can be mixedly controlled.In other words, the number of DC-TDM type traffic signal controller
-It is configured so that the ratio to the number of TDM traffic signal controller lines can be arbitrarily determined.
作 用 従って、本発明によれば、制御可能な最大回線数に対
して、DC−TDM形交通信号制御機用回線数とFS−TDM形交
通信号制御機用回線数との割合を任意に決めることがで
き、装置の制御できる最大回線数が回線対応ユニットの
タイプによって制約を受けないことと、回線対応ユニッ
トの装置内における実装位置を任意に決めることができ
るという作用を有する。Operation Therefore, according to the present invention, the ratio between the number of DC-TDM type traffic signal controller lines and the number of FS-TDM type traffic signal controller lines is arbitrarily determined with respect to the maximum number of controllable lines. The maximum number of lines that can be controlled by the device is not restricted by the type of the line corresponding unit, and the mounting position of the line corresponding unit in the device can be arbitrarily determined.
実施例 第１図，第２図は本発明の一実施例を示す概略ブロッ
ク図である。第１図において31は中央処理部、32は記憶
部、33は回線処理部、34はDC−TDM形回線対応ユニッ
ト、35はFS−TDM形回線対応ユニットである。第２図に
おいて、41は回線処理部、42は回線対応ユニット、43は
処理部、44は記憶部、45は入出力部（１）、46は入出力
部（２）、47は回線識別信号、48は回線識別回路、49は
入出力部、4Aはアドレス制御部、4Bは直並列変換部、4C
は変復調部である。Embodiment FIG. 1 and FIG. 2 are schematic block diagrams showing an embodiment of the present invention. In FIG. 1, 31 is a central processing unit, 32 is a storage unit, 33 is a line processing unit, 34 is a DC-TDM type line compatible unit, and 35 is an FS-TDM type line compatible unit. In FIG. 2, 41 is a line processing unit, 42 is a line corresponding unit, 43 is a processing unit, 44 is a storage unit, 45 is an input / output unit (1), 46 is an input / output unit (2), and 47 is a line identification signal. , 48 is a line identification circuit, 49 is an input / output unit, 4A is an address control unit, 4B is a serial-parallel conversion unit, 4C
Is a modulation / demodulation unit.
第３図は本発明の一実施例の外観構成図である。第３
図において51は中央処理部、52は記憶部、53は回線処理
部、54はDC−TDM形回線対応ユニット、55はFS−TDM形回
線対応ユニットである。FIG. 3 is an external structural view of one embodiment of the present invention. Third
In the figure, 51 is a central processing unit, 52 is a storage unit, 53 is a line processing unit, 54 is a DC-TDM type line compatible unit, and 55 is an FS-TDM type line compatible unit.
第４図は本発明の一実施例の回線処理部における制御
流れ図である。FIG. 4 is a control flow chart in the line processing section of one embodiment of the present invention.
次に、上記実施例の動作について説明する。本装置は
第１図に示すように１つの回線処理部33が、DC−TDM形
回線対応ユニット34とFS−TDM形回線対応ユニット35と
を制御する。この混在制御を行うには、第２図の回線処
理部41において、その処理部43が制御しようとする回線
がDC−TDM形か、FS−TDM形かを識別出来なければならな
い。処理部43はまず回線対応ユニット42の回線識別回路
48からの識別信号47を読みだす。その識別信号にはあら
かじめDC−TDM形及びFS−TDM形に対応する値を割り当て
ておき、それぞれの回線対応ユニットからその割り当て
られた信号が送出される。これにより、処理部43は、そ
の回線がDC−TDM形か、FS−TDM形かを識別する。そし
て、処理部43は次にその回線がDC−TDM形ならばDC−TDM
形用の制御処理を、FS−TDM形ならばFS−TDM形用の制御
処理を行う（第４図）。この様にすべての回線につい
て、まず回線識別を行ってから、それぞれの制御処理を
行う様にする。Next, the operation of the above embodiment will be described. In this apparatus, as shown in FIG. 1, one line processor 33 controls a DC-TDM type line compatible unit 34 and an FS-TDM type line compatible unit 35. In order to perform this mixed control, the line processing unit 41 in FIG. 2 must be able to identify whether the line to be controlled by the processing unit 43 is a DC-TDM type or an FS-TDM type. The processing unit 43 is a line identification circuit of the line corresponding unit 42 first.
The identification signal 47 from 48 is read out. A value corresponding to the DC-TDM type and the FS-TDM type is assigned to the identification signal in advance, and the assigned signal is transmitted from each line corresponding unit. Thereby, the processing unit 43 identifies whether the line is the DC-TDM type or the FS-TDM type. Then, the processing unit 43 next executes DC-TDM if the line is of DC-TDM type.
For FS-TDM type control processing, control processing for FS-TDM type is performed (FIG. 4). As described above, for all the lines, the lines are first identified, and then the respective control processes are performed.
この様に上記実施例によれば１つの回線処理部がDC−
TDM形回線対応ユニットとFS−TDM形回線対応ユニットと
を混在制御でき、すなわち装置として制御可能な最大回
線数に対して、DC−TDM形交通信号制御機用回線数とFS
−TDM形交通信号制御機用回線数との割合を任意に決め
ることができ、そして、第３図に示すように回線対応ユ
ニットの装置内における実装位置を任意に決める事がで
きることで、多くの交通信号制御機すなわち多くの回線
対応ユニットを制御する交通信号制御機監視制御装置の
円滑な運用，管理，保守が出来るという効果を有する。As described above, according to the above embodiment, one line processing unit is a DC-
The TDM type line compatible unit and the FS-TDM type compatible unit can be mixedly controlled, that is, the DC-TDM type traffic signal controller line number and FS
-It is possible to arbitrarily determine the ratio to the number of lines for the TDM type traffic signal controller, and to arbitrarily determine the mounting position of the line corresponding unit in the device as shown in FIG. This has the effect that the traffic signal controller, that is, the traffic signal controller monitoring and control device for controlling many line-corresponding units, can be smoothly operated, managed and maintained.
発明の効果 本発明は上記実施例により明らかなように、回線対応
ユニットに回線識別回路からの情報により、その回線対
応ユニットがDC−TDM形かFS−TDM形かを判断し、その結
果に応じて各タイプ用の制御を行う機能を設け、回線処
理部がDC−TDM形回線対応ユニットとFS−TDM形回線対応
ユニットを混在制御でき、すなわち装置として制御可能
な最大回線数に対して、DC−TDM形交通信号制御機用回
線数とFS−TDM形交通信号制御機用回線数との割合を任
意に決めることができ、回線対応ユニットの装置内にお
ける実装位置を任意に決めることができることによっ
て、多くの交通信号制御機すなわち多くの回線対応ユニ
ットを制御する交通信号制御機監視制御装置の円滑な運
用，管理，保守ができ、その実用的効果は大なるものが
ある。According to the present invention, as apparent from the above embodiment, the line corresponding unit determines whether the line corresponding unit is the DC-TDM type or the FS-TDM type based on information from the line identification circuit, and responds according to the result. The line processing unit can control the DC-TDM type line compatible unit and the FS-TDM type line compatible unit in a mixed manner. -The ratio between the number of lines for the TDM type traffic signal controller and the number of lines for the FS-TDM type traffic signal controller can be determined arbitrarily, and the mounting position of the line corresponding unit in the device can be determined arbitrarily. The operation, management, and maintenance of many traffic signal controllers, that is, traffic signal controller monitoring and control devices for controlling many line-corresponding units, can be performed smoothly, and their practical effects are large.
第１図は本発明の一実施例における概略ブロック図、第
２図は同装置の回線処理部概略ブロック図、第３図は同
装置の外観構成図、第４図は同装置の回線処理部の制御
流れ図、第５図は従来の交通信号制御機監視制御装置の
概略ブロック図、第６図は外観構成図である。 11……中央処理部、12……記憶部、13……DC−TDM形回
線処理部、14……FS−TDM形回線処理部、15……DC−TDM
形回線対応ユニット、16……FS−TDM形回線対応ユニッ
ト、21……中央処理部、22……記憶部、23……DC−TDM
形回線処理部、24……FS−TDM形回線処理部、25……DC
−TDM形回線対応ユニット、26……FS−TDM形回線対応ユ
ニット、27……DC−TDM形回線対応ユニット収容棚、28
……FS−TDM形回線対応ユニット収容棚、29……電源
部、31……中央処理部、32……記憶部、33……回線処理
部、34……DC−TDM形回線対応ユニット、35……FS−TDM
形回線対応ユニット、41……回線処理部、42……回線対
応ユニット、43……処理部、44……記憶部、45……入出
力部（１）、46……入出力部（２）、47……回線識別信
号、48……回線識別回路、49……アドレス制御部、4A…
…入出力部、4B……直並列変換部、4C……変復調部、51
……中央処理部、52……記憶部、53……回線処理部、54
……DC−TDM形回線対応ユニット、55……FS−TDM形回線
対応ユニット、56……電源部。FIG. 1 is a schematic block diagram of an embodiment of the present invention, FIG. 2 is a schematic block diagram of a line processing unit of the apparatus, FIG. 3 is an external configuration diagram of the apparatus, and FIG. FIG. 5 is a schematic block diagram of a conventional traffic signal controller monitoring and control device, and FIG. 6 is an external configuration diagram. 11 central processing unit, 12 storage unit, 13 DC-TDM type line processing unit, 14 FS-TDM type line processing unit, 15 DC-TDM
Type line compatible unit, 16: FS-TDM type line compatible unit, 21: Central processing unit, 22: Storage unit, 23: DC-TDM
Model line processing unit, 24 ... FS-TDM type circuit processing unit, 25 ... DC
-TDM type line compatible unit, 26 ... FS-TDM type line compatible unit, 27 ... DC-TDM type line compatible unit accommodation shelf, 28
...... FS-TDM type line accommodating unit housing shelf, 29 ... power supply unit, 31 ... central processing unit, 32 ... storage unit, 33 ... line processing unit, 34 ... DC-TDM type line compatible unit, 35 …… FS-TDM
Type line compatible unit, 41 ... line processing unit, 42 ... line compatible unit, 43 ... processing unit, 44 ... storage unit, 45 ... input / output unit (1), 46 ... input / output unit (2) , 47 ... Line identification signal, 48 ... Line identification circuit, 49 ... Address control unit, 4A ...
... Input / output unit, 4B ... Serial-parallel conversion unit, 4C ... Modulation / demodulation unit, 51
... Central processing unit, 52 ... Storage unit, 53 ... Line processing unit, 54
…… DC-TDM type line compatible unit, 55 …… FS-TDM type line compatible unit, 56 …… Power supply unit.
───────────────────────────────────────────────────── フロントページの続き (72)発明者 生井 達郎 神奈川県横浜市港北区綱島東４丁目３番 １号 松下通信工業株式会社内 (72)発明者 加藤 誠 神奈川県横浜市港北区綱島東４丁目３番 １号 松下通信工業株式会社内 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Tatsuro Ikui 4-3-1 Tsunashima Higashi, Kohoku-ku, Yokohama-shi, Kanagawa Prefecture Inside Matsushita Communication Industrial Co., Ltd. (72) Makoto Kato 4 Tsunashima-Higashi, Kohoku-ku, Yokohama, Kanagawa 4 Chome 3-1 Matsushita Communication Industrial Co., Ltd.
Claims (1)
交通信号機監視制御装置であって、 上記回線対応ユニットは回線と接続し、この回線がDC−
TDM形、あるいはFS−TDM形のいずれであるかの識別信号
を予め登録している回線識別回路を有しており、 上記回線処理部は、上記回線識別回路から上記識別信号
を読み出し、上記DC−TDM形、あるいは上記FS−TDM形か
を識別し、それぞれの制御処理を行うことを特徴とする
交通信号機監視制御装置。1. A traffic signal monitoring and control device having a line corresponding unit and a line processing unit, wherein the line corresponding unit is connected to a line, and the line is connected to a DC-
It has a line identification circuit that pre-registers an identification signal indicating whether it is a TDM type or an FS-TDM type.The line processing unit reads the identification signal from the line identification circuit, and A traffic signal monitoring and control device characterized in that it identifies the TDM type or the FS-TDM type and performs respective control processing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1151488A JP2770428B2 (en) | 1989-06-13 | 1989-06-13 | Traffic signal controller monitoring and control device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1151488A JP2770428B2 (en) | 1989-06-13 | 1989-06-13 | Traffic signal controller monitoring and control device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0314200A JPH0314200A (en) | 1991-01-22 |
| JP2770428B2 true JP2770428B2 (en) | 1998-07-02 |
Family
ID=15519596
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1151488A Expired - Fee Related JP2770428B2 (en) | 1989-06-13 | 1989-06-13 | Traffic signal controller monitoring and control device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2770428B2 (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS54100299A (en) * | 1978-01-25 | 1979-08-07 | Koito Kogyo Kk | Information transmission converting system for controlling traffic signal |
-
1989
- 1989-06-13 JP JP1151488A patent/JP2770428B2/en not_active Expired - Fee Related
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS54100299A (en) * | 1978-01-25 | 1979-08-07 | Koito Kogyo Kk | Information transmission converting system for controlling traffic signal |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0314200A (en) | 1991-01-22 |
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