JPS61158248A - Code communication device - Google Patents
Code communication deviceInfo
- Publication number
- JPS61158248A JPS61158248A JP59280985A JP28098584A JPS61158248A JP S61158248 A JPS61158248 A JP S61158248A JP 59280985 A JP59280985 A JP 59280985A JP 28098584 A JP28098584 A JP 28098584A JP S61158248 A JPS61158248 A JP S61158248A
- Authority
- JP
- Japan
- Prior art keywords
- code
- transmission
- circuit
- reception
- power supply
- 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
Landscapes
- Dc Digital Transmission (AREA)
- Communication Control (AREA)
Abstract
Description
【発明の詳細な説明】 (産業上の利用分野) この発明は、符号通信装置に関する。[Detailed description of the invention] (Industrial application field) The present invention relates to a code communication device.
(従来技術とその問題点)
従来、この種の符号通信装置としては、例えば実開昭5
6−130363号、実開昭56−134853号等に
記載されたものが)、nられている。(Prior art and its problems) Conventionally, as this type of code communication device, for example,
6-130363, Utility Model Application Publication No. 56-134853, etc.), n.
このような符号通信装置にあっては、装置を小へり化し
、かつ消費電力を抑え、電池の寿命を延ばしつつ通信可
能距離を如何に大きくするかが課題である。The challenge for such code communication devices is how to increase the communicable distance while making the device smaller, reducing power consumption, and extending battery life.
しかるに、送信電力の増加は消費電力が増加すること、
および電波法の制眼より困難であるため、通信可能距離
を大きくするには、受信感度を向上させることが必要で
ある。そのために、有効な手段としては、受信装置の通
過周波数帯域を狭め、S/N比を向上させることであり
、このため受信回路中に帯域フィルタやローパスフィル
タを入れて狭帯域化を図るのが通例である。However, an increase in transmission power means an increase in power consumption;
This is more difficult than eye control under the Radio Law, so in order to increase the communicable distance, it is necessary to improve reception sensitivity. To this end, an effective means is to narrow the passing frequency band of the receiving device and improve the S/N ratio. For this purpose, it is recommended to narrow the band by inserting a bandpass filter or a low-pass filter into the receiving circuit. It is customary.
しかしながら、このような従来装置にあっては、受信装
置の狭帯域化によって受信感度を向上させているため、
変調波すなわち符号信号の周波数成分のうち、高い周波
数成分は伝送できないことになり、符号の伝送速度を遅
くしなければならない。However, in such conventional devices, the receiving sensitivity is improved by narrowing the band of the receiving device, so
Among the frequency components of the modulated wave, that is, the code signal, high frequency components cannot be transmitted, and the code transmission speed must be slowed down.
例えば、受信装置の帯域幅を10Hzとすると、符号の
伝送速度は10bit /secが限度となり、64ビ
ツトの符号を伝送するのに6秒以上を要することになる
。For example, if the bandwidth of the receiving device is 10 Hz, the code transmission rate is limited to 10 bits/sec, and it takes 6 seconds or more to transmit a 64-bit code.
このため、近距離例えば連なって走行する車両間で通信
を行なおうとすると、早急な情報の伝送が必要な場合に
は不都合が生じたりするという間照点があった。For this reason, when attempting to communicate over short distances, for example, between vehicles traveling in series, there has been a problem in the case where information needs to be transmitted quickly.
(発明の目的)
この発明の目的は、この種の符号通信装置にお ゛い
て、通信「1離に応じた最適な符Yう伝送を筒中な操作
で可能とすることにある。(Objective of the Invention) The object of the present invention is to enable, in this type of code communication device, the transmission of the optimum code according to the communication distance by in-cylinder operation.
(発明の構成)
この発明は上記の目的を達成するために、符号送信手段
の伝送速度と、符号受信手段の受信帯域とを連動して調
整可能に構成したもので市る。(Structure of the Invention) In order to achieve the above-mentioned object, the present invention has a structure in which the transmission speed of the code transmitting means and the reception band of the code receiving means can be adjusted in conjunction with each other.
(実施例の説明)
第1図は本発明実施例装置のハードウェア構成を示すブ
ロック図である。この装置は、受信機能と送信機能とを
併有するもので、常時は受信用機能か働き、送信開始と
ともに自動的に送信機能が優先されるように構成されて
いる。(Description of Embodiments) FIG. 1 is a block diagram showing the hardware configuration of an apparatus according to an embodiment of the present invention. This device has both a receiving function and a transmitting function, and is configured such that the receiving function is always active, and the sending function is automatically given priority when transmission starts.
また、受信系には、受信帯域を広狭可変な機能が備えら
れるとともに、送信系には符号伝送速度を高低可変な機
能か備えられ、更に送信系の伝送速度と受信系の受信帯
域とは連動して調整可能になっている。In addition, the receiving system is equipped with a function that allows the receiving band to be varied wide and narrow, and the transmitting system is equipped with a function that allows the code transmission rate to be varied high or low, and furthermore, the transmission speed of the transmitting system and the receiving band of the receiving system are linked. It is adjustable.
以下、本実施例装置の構成をその動作とともに系統的に
説明する。Hereinafter, the configuration of the device of this embodiment will be systematically explained along with its operation.
第1図の回路図に示される装置は、例えばポケットに挿
入可能な携帯用ケースに内蔵され、このケースには電源
となるバッテリ1が内蔵されるとともに、ケース外表面
には電源スイッチ2.符号選択スイッチ3,4および通
信距離切替スイッチ5がそれぞれ取付けられている。The device shown in the circuit diagram of FIG. 1 is built into a portable case that can be inserted into a pocket, for example, and this case has a built-in battery 1 as a power source, and a power switch 2 on the outer surface of the case. Code selection switches 3 and 4 and communication distance changeover switch 5 are respectively attached.
電源スィッチ2が投入されると、バッテリ1からの電源
は電源制御回路6へと与えられ、以後後述する符号発生
回路7a、7bからの信号に応じて、受信用電源または
送信用電源として択一的に切替供給される。When the power switch 2 is turned on, the power from the battery 1 is supplied to the power supply control circuit 6, and is selected as a receiving power source or a transmitting power source according to signals from code generation circuits 7a and 7b, which will be described later. It is switched and supplied.
今仮に、比較的遠距離で通信する場合を想定する。この
場合、通信距離切替スイッチ5はa側に切替設定される
。すると、このスイッチ5にインターロックされたスイ
ッチ81〜S6は、スイッチ5の切替動作に連動して、
全てa側に切替設定される。Let's now assume a case where communication is performed over a relatively long distance. In this case, the communication distance changeover switch 5 is set to the a side. Then, the switches 81 to S6 interlocked with this switch 5 are interlocked with the switching operation of the switch 5, and
All are switched to the a side.
この状態において、符号選択スイッチ3,4の何れかが
操作されると、符号発生回路7aからは該当する符号が
発生して、スイッチS6を経由して変調回路8へと与え
られるとともに、電源制御回路6側では符号発生回路7
aからの指令を受けて送信用電源を出力し、この電源に
より変調回路8、搬送波発振回路9が駆動されるととも
に、アンテナ切替回路10は送信側へ切替設定されろ。In this state, when either the code selection switch 3 or 4 is operated, the corresponding code is generated from the code generation circuit 7a and is applied to the modulation circuit 8 via the switch S6, and is also sent to the power supply control On the circuit 6 side, code generation circuit 7
In response to a command from a, a power source for transmission is outputted, and the modulation circuit 8 and carrier wave oscillation circuit 9 are driven by this power source, and the antenna switching circuit 10 is switched to the transmitting side.
従って、アンテナ11からは発生符号で変調された所定
の変調波が相手側へと無線送出されることとなる。Therefore, a predetermined modulated wave modulated with the generated code is wirelessly transmitted from the antenna 11 to the other party.
一方、上述した送信動作が終了すると、符号発生回路7
からの指令を受けて、電源制御回路6は自動的に受信用
電源の供給を復帰する。On the other hand, when the above-described transmission operation is completed, the code generation circuit 7
In response to a command from the receiver, the power supply control circuit 6 automatically restores the supply of power for reception.
この状態において、相手側から送信された電波がアンテ
ナ11で受信されると、この受信信号はアンテナ切替器
10を経由した後、高周波増幅回路12.l’i’il
波数変換回路13.帯域フィルタ14a、中間周波増幅
回路15.検波回路16.ローパスフィルタ17a、符
elli??読回路18aを介して受信11f’?読さ
れ、この解読結果に応じてインジケ一タランプ19.2
0の何れかが点灯駆動される。In this state, when a radio wave transmitted from the other party is received by the antenna 11, this received signal passes through the antenna switch 10 and then passes through the high frequency amplification circuit 12. l'i'il
Wave number conversion circuit 13. Bandpass filter 14a, intermediate frequency amplification circuit 15. Detection circuit 16. Low-pass filter 17a, code elli? ? Reception 11f'? via reading circuit 18a? The indicator lamp 19.2 will be read depending on the result of the decoding.
0 is driven to turn on.
このように、符号伝送速度が低速度【こ設定されている
場合には、受信系についても比較的帯域の狭い帯域フィ
ルタ14a、ローパスフィルタ17aが採用されるため
、遠距離通信に起因して受信電波の微弱化によりS/N
比が低下した場合にも、高感度受信が行なわれるため、
精度良く送信符号を識別することができる。In this way, when the code transmission speed is set to a low speed, the reception system also employs the band filter 14a and low-pass filter 17a, which have relatively narrow bands. S/N due to weakening of radio waves
High-sensitivity reception is performed even when the ratio decreases, so
Transmission codes can be identified with high accuracy.
次に、比較的近距離で通信をする場合を想定する。この
場合には、通信距離切替スイッチ5はb側に切替設定さ
れ、これに連動してスイッチ81〜S6は全てb側に切
替設定される。Next, let us assume a case where communication is performed over a relatively short distance. In this case, the communication distance selector switch 5 is switched to the b side, and in conjunction with this, all the switches 81 to S6 are switched to the b side.
この状態において、符号選択スイッチ3,4の何れかが
操作された場合、符号発生回路7bから発生した符号が
、スイッチS6を経由して変調回路8に送られ、同時に
符号発生回路7bからの指令を受けて電源制御回路6か
らは送信用電源が出力される。このため、アンテナ11
からは大なる伝送速度をもって符号信号電波が送出され
る。In this state, when either the code selection switch 3 or 4 is operated, the code generated from the code generation circuit 7b is sent to the modulation circuit 8 via the switch S6, and at the same time the code generated from the code generation circuit 7b is sent to the modulation circuit 8. In response to this, the power supply control circuit 6 outputs power for transmission. For this reason, the antenna 11
Code signal radio waves are sent out at a high transmission speed.
一方、送信が終了すると、前述と同様にして電源制御回
路6からは受信用電源の供給が復帰する。On the other hand, when the transmission is completed, the power supply for reception is resumed from the power supply control circuit 6 in the same manner as described above.
この状態において、アンテナ11で相手からの電波が受
信されろと、受信信号はアンテナ切替器10を経由した
後、高周波増幅回路129周波数変換回路13.帯域フ
ィルタ14b、中間周波増幅回路15.検波回路16.
ローパスフィルタ17b、符号解読回路18bを経由し
て受信、解読され、インジケータ19.20の何れかが
駆動される。In this state, when the antenna 11 receives radio waves from the other party, the received signal passes through the antenna switch 10, then the high frequency amplification circuit 129, the frequency conversion circuit 13. Bandpass filter 14b, intermediate frequency amplification circuit 15. Detection circuit 16.
It is received and decoded via the low-pass filter 17b and code decoding circuit 18b, and one of the indicators 19 and 20 is driven.
このように、近距離の符号伝送を行なうべく、通信距因
1切替スイッチ5を近距離側に設定すると、受信側にお
ける帯域フィルタ、ローパスフィルタはそれぞれ広帯域
側のフィルタ14h、17bに切替設定され、このため
高速度符号伝送に伴う高置波成分を受信系において充分
再生することかでき、また近W[離受信の場合にはS/
N比が充分確保されているため、このような広帯域化を
達成したとしても、符号識別ミスを発生する虞れはない
。In this way, when the communication distance factor 1 changeover switch 5 is set to the short distance side in order to perform short distance code transmission, the band filter and low pass filter on the receiving side are switched to the wide band side filters 14h and 17b, respectively. For this reason, high frequency components associated with high-speed code transmission can be sufficiently reproduced in the receiving system, and near W [S/S/
Since the N ratio is sufficiently secured, even if such a wide band is achieved, there is no risk of code identification errors occurring.
このように、この実施例装置によれば、通信距離切替ス
イッチ5を遠距離側または近距離側の何れかに切替設定
するだけで、送信系における符号発生回路は、これに応
じて高速伝送側または低速伝送側へと切替設定され、同
時に受信系における帯域フィルタは狭帯域側または広帯
域側へと自動切替されろ。このため、通信距離に応じた
最適な通信をなすことができるわけである。As described above, according to this embodiment, by simply setting the communication distance selector switch 5 to either the long distance side or the short distance side, the code generation circuit in the transmission system can be set to the high speed transmission side accordingly. Alternatively, it is set to switch to the low-speed transmission side, and at the same time the bandpass filter in the receiving system is automatically switched to the narrowband side or wideband side. Therefore, it is possible to perform optimal communication according to the communication distance.
なお、前記実施例では、送信側において符号伝送速度を
大小切替えるに際して、伝送速度の異なる2個の符号発
生回路を設けこれらを択一的に切替えるように構成した
が、1個の符号発生回路における伝送速度を連続的に可
変調整可能にしても良いことは勿論であり、また受信系
における帯域フィルタおよびローパスフィルタについて
も、同様に帯域を連続的に制御可能な構成とし、これら
を送受側において亙いに連動して、符号伝送速度が高く
なるにつれ受信帯域を広げ、逆に符号伝送速度が遅くな
るにつれて、受信帯域を狭めるようにしても良いことは
勿論である。In the above embodiment, when changing the code transmission speed on the transmitting side, two code generation circuits with different transmission speeds are provided and the two code generation circuits are selectively switched. It goes without saying that the transmission speed may be continuously adjustable, and the bandpass filter and low-pass filter in the receiving system should also be constructed so that the band can be continuously controlled, and these can be adjusted continuously on the transmitting and receiving sides. Of course, the reception band may be expanded as the code transmission rate increases, and conversely, the reception band may be narrowed as the code transmission rate becomes slower.
(発明の効果)
以上の説明でも明らかなように、この発明によれば、こ
の種符号通信装置において、通信距離に応じた最適な符
号送受信を、簡単な操作で行なわせることかできる。(Effects of the Invention) As is clear from the above description, according to the present invention, in this type of code communication device, optimal code transmission and reception depending on the communication distance can be performed with a simple operation.
第1図は本発明実施例装置のハードウェア構成を示すブ
ロック図である。FIG. 1 is a block diagram showing the hardware configuration of an apparatus according to an embodiment of the present invention.
Claims (1)
号受信帯域を広狭可変な符号受信手段と;前記符号送信
手段の伝送速度と、前記符号受信手段の受信帯域とを連
動して調整可能な調整手段とを具備することを特徴とす
る符号通信装置。(1) A code transmitter whose code transmission rate is variable in height and a code receiver; a code receiver whose code reception band is variable in width and narrow; the transmission rate of the code transmitter and the reception band of the code receiver can be adjusted in conjunction with each other; 1. A code communication device comprising: adjustment means.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP59280985A JPS61158248A (en) | 1984-12-29 | 1984-12-29 | Code communication device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP59280985A JPS61158248A (en) | 1984-12-29 | 1984-12-29 | Code communication device |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS61158248A true JPS61158248A (en) | 1986-07-17 |
Family
ID=17632646
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP59280985A Pending JPS61158248A (en) | 1984-12-29 | 1984-12-29 | Code communication device |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS61158248A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH02141127A (en) * | 1988-11-22 | 1990-05-30 | Nec Corp | Frequency control circuit |
-
1984
- 1984-12-29 JP JP59280985A patent/JPS61158248A/en active Pending
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH02141127A (en) * | 1988-11-22 | 1990-05-30 | Nec Corp | Frequency control circuit |
JPH0748668B2 (en) * | 1988-11-22 | 1995-05-24 | 日本電気株式会社 | Frequency control circuit |
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