JPS63166334A - Synchronizing system - Google Patents
Synchronizing systemInfo
- Publication number
- JPS63166334A JPS63166334A JP61310258A JP31025886A JPS63166334A JP S63166334 A JPS63166334 A JP S63166334A JP 61310258 A JP61310258 A JP 61310258A JP 31025886 A JP31025886 A JP 31025886A JP S63166334 A JPS63166334 A JP S63166334A
- Authority
- JP
- Japan
- Prior art keywords
- synchronization
- signal
- synchronization signal
- circuit
- output
- 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.)
- Granted
Links
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- Synchronisation In Digital Transmission Systems (AREA)
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
【発明の詳細な説明】
（産業上の利用分野）
本発明は通信システムにおける同期方式に関し、特に簡
便な方法で同期をとる同期方式に関するものである。DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a synchronization method in a communication system, and particularly to a synchronization method that achieves synchronization using a simple method.
（従来の技術）
通信システムにおいて、送信側と受信側の伝送信号の同
期をとる従来の同期方式としては、送信側からビット同
期信号とフレーム同期信号とを送出して、受信側でそれ
ぞれに応じてビット同期回路とフレーム同期回路とによ
り同期をとる方式である。 それぞれの同期回路の代表
的なものとしては、まずビット同期回路についてはデジ
タルｒ）ＬＬ（フェーズロックループ）方式があり、フ
レーム同期回路についてはＰＮ（疑似雑音）符号の相関
を利用したＰＮ同期方式等がある。 後者のＰＮ同期方
式はＩ） Ｎ符号を同期信号として用いるもので、これ
を位相変調や周波数変調して送出し、受信側で復調した
のちＰＮ符号の相関をとって同期をとる方式である。
第３図に上記の従来のＰＮ同期方式を用いた構成例を示
す。 ＩＯはＰＮ信号発生器、１１は変調回路、１２
は復調回路、１３はフレーム同期回路、１４はビット同
期回路である。 また、第４図にはこのＰＮ同期方式の
同期信号の波形例を示し、（ａ）はＰＮ符号の波形例、
（ｂ）は該１） Ｎ符号をＰＳＫ変調した場合の波形例
である。(Prior art) In a communication system, the conventional synchronization method for synchronizing transmission signals on the transmitting side and the receiving side is to send out a bit synchronization signal and a frame synchronization signal from the transmitting side, and then transmit the bit synchronization signal and frame synchronization signal on the receiving side in response to each signal. This method uses a bit synchronization circuit and a frame synchronization circuit to achieve synchronization. Typical examples of each type of synchronization circuit are the digital r)LL (phase-locked loop) method for the bit synchronization circuit, and the PN synchronization method using the correlation of PN (pseudo-noise) codes for the frame synchronization circuit. etc. The latter PN synchronization method uses an I)N code as a synchronization signal, which is phase-modulated or frequency-modulated, sent out, demodulated on the receiving side, and then correlated with the PN code to achieve synchronization.
FIG. 3 shows an example of a configuration using the above-mentioned conventional PN synchronization method. IO is a PN signal generator, 11 is a modulation circuit, 12
1 is a demodulation circuit, 13 is a frame synchronization circuit, and 14 is a bit synchronization circuit. In addition, Fig. 4 shows an example of the waveform of the synchronization signal of this PN synchronization method, and (a) shows an example of the waveform of the PN code;
(b) is an example of a waveform when the N code is PSK modulated.
（発明が解決しようとする問題点）
しかし従来の上述の方式では、十分な相関をもったＰＮ
符号を送るには、長い送信時間を必要とする。 従って
、音声帯域や狭帯域の伝送路においては、十分な相関を
もったＰＮ符号が送れない欠点があった。 さらに、位
相変調や周波数変調等の同期信号の変復調回路と、受信
側にフレーム同期回路以外にビット同期回路とを必要と
するために、ハード量が多くなり、装置をコンパクトに
することができない等の欠点があった。(Problem to be solved by the invention) However, in the conventional method described above, the PN with sufficient correlation
Sending the code requires a long transmission time. Therefore, there is a drawback that PN codes with sufficient correlation cannot be sent over voice band or narrow band transmission paths. Furthermore, since a modulation/demodulation circuit for synchronization signals such as phase modulation and frequency modulation and a bit synchronization circuit in addition to a frame synchronization circuit are required on the receiving side, the amount of hardware increases, making it impossible to make the device compact. There was a drawback.
（問題点を解決するための手段）
本発明はこれらの欠点を解決するために、任意の時間内
で周波数を連続的に変化ざ仕た同期信号を同期信号とし
て送信し、受信側では前記の送信側で生成した同期信号
と同一の信号を発生させ、該信号と送信側から送られて
来た同期信号との相関をとり、送られてくる主伝送信号
の同期をとって、主伝送信号の受信をするようにしたも
のである。(Means for Solving the Problems) In order to solve these drawbacks, the present invention transmits a synchronization signal whose frequency changes continuously within an arbitrary time as a synchronization signal, and the receiving side transmits the synchronization signal as described above. Generate a signal identical to the synchronization signal generated on the transmitting side, correlate this signal with the synchronization signal sent from the transmitting side, synchronize the sent main transmission signal, and generate the main transmission signal. It is designed to receive the following information.
（実施例）
第１図は本発明による同期方式を用いた一実施例を示す
ブロック図で、１は受信側の同期信号入力端子、２は送
られて来た同期信号を蓄積して並列出力するシフトレジ
スタ、３はシフトレジスタ２からの並列出力、４は・■
列出力３のパターンと後記同期信号発生回路６からの並
列出力５のパターンとを比較するパターン一致回路、５
は同期信号発生回路６からの並列出力、６は同期信号発
生回路、７は同期判定結果出力端子、８は送信側の同期
信号発生回路、９は送信側の同期信号出力端子である。(Embodiment) Fig. 1 is a block diagram showing an embodiment using the synchronization method according to the present invention, in which 1 is a synchronization signal input terminal on the receiving side, and 2 is a synchronization signal that is sent and is accumulated and output in parallel. Shift register 3 is parallel output from shift register 2, 4 is ・■
a pattern matching circuit 5 that compares the pattern of the column output 3 and the pattern of the parallel output 5 from the synchronization signal generation circuit 6 described later;
6 is a synchronization signal generation circuit, 7 is a synchronization determination result output terminal, 8 is a transmission side synchronization signal generation circuit, and 9 is a transmission side synchronization signal output terminal.
第２図は前記の同期信号の一波形例で、（ａ）は時Ｈ
ａと周波数との関係を示す曲線、（ｂ）は曲線（ａ）で
周波数が変化する同期信号の波形例である。FIG. 2 shows an example of the waveform of the synchronization signal, and (a) shows the time H.
A curve showing the relationship between a and frequency, and (b) is an example of the waveform of a synchronization signal whose frequency changes according to curve (a).
（作用）
第１図において、送信側（Ｔｘ）の同期信号発生回路８
で、第２図に示すような任意の時間内で周波数を連続的
に変化させた信号を、同期信号として同期信号出力端子
９から送信する。 ただし第１図では、同期信号に係わ
る入力端子と出力端子だけを図示しており、伝送される
主伝送信号に係わる出力端子と入力端子とは図示されて
いない。(Function) In FIG. 1, the synchronization signal generation circuit 8 on the transmitting side (Tx)
Then, a signal whose frequency is continuously changed within an arbitrary time period as shown in FIG. 2 is transmitted from the synchronization signal output terminal 9 as a synchronization signal. However, in FIG. 1, only the input terminal and output terminal related to the synchronization signal are illustrated, and the output terminal and input terminal related to the main transmission signal to be transmitted are not illustrated.
受信側（Ｒｘ）では、送信側から送られてきた同期信号
はサンプリング（図示せず）された後に、同期信号入力
端子ｌに人力される。 入力された同期信号はソフトレ
ジスタ２に蓄積され、並列出力３が出力される。 一方
同期信号発生回路６では、送信側の同期信号発生回路８
で発生した同期信号と同一の信号を発生し、並列出力５
を出力する。On the receiving side (Rx), the synchronizing signal sent from the transmitting side is sampled (not shown) and then manually inputted to the synchronizing signal input terminal l. The input synchronization signal is accumulated in the soft register 2, and a parallel output 3 is output. On the other hand, in the synchronization signal generation circuit 6, the transmission side synchronization signal generation circuit 8
Generates the same signal as the synchronization signal generated in parallel output 5
Output.
＋’＋ｒｉ記のソフトレジスタ２から出力された並列出
力３と、同期信号発生回路６から出力された並列出力５
とは、パターン一致回路４によって比較が行われ、その
結果が同期判定結果出力端子７から出力されて、伝送さ
れてくる主伝送信号の同期をとり、主伝送信号の受信を
行う。+'+ri parallel output 3 output from the soft register 2 and parallel output 5 output from the synchronization signal generation circuit 6
A comparison is made by the pattern matching circuit 4, and the result is output from the synchronization determination result output terminal 7 to synchronize the transmitted main transmission signal and receive the main transmission signal.
以上のように、同期信号として任意の時間で周波数を連
続的に変化させた信号を用いることで、音声帯域や狭帯
域の伝送路でも、限られた短い時間内で十分な自己相関
をもった同期信号を送るこｆｉ ＃＜ ｏＴ婚）−ｈ
Ｘ −大； Ｉ＝ ｈ ｆ−の闇餌Ｕ会ノーｌ、て
は、周波数の低域から高域へ、または高域から低域へ、
周波数を直線的あるいは曲線的に時間関数に従って変化
さけてもよく、または、低域から高域への変化と、高域
から低域への変化とを、挿々に組み合わせて変化させて
もよい。 いわゆるチャーブ波はその特定の場合である
。As described above, by using a signal whose frequency is continuously changed at an arbitrary time as a synchronization signal, it is possible to obtain sufficient autocorrelation within a limited short time even on voice band or narrow band transmission channels. Send a synchronization signal (#<oT)-h
X - large; I = h
The frequency may be changed linearly or curved according to a time function, or may be changed by a combination of changes from low range to high range and from high range to low range. . So-called chirb waves are a particular case of this.
（発明の効果）
以上説明したように、任意の時間内で周波数を連続的に
変化させることにより生成した信号を同期信号とする本
発明の同期方式は、音声帯域や狭帯域の伝送路でも、十
分な自己相関のある同期信号を限られた短い時間内で伝
送することかできる利点がある。 また、従来のように
ビット同期回路とフレーム同期回路の双方を必要とせず
、さらにＰＮ符号のように低い周波数成分をもたないた
め、音声帯域伝送路のように低域周波数を通さない伝送
路においても、サブキャリア（副搬送波）を用いた変調
を行う必要がないので、そのための位相変調や周波数変
調等の変復調回路を必要としない利点がある。 このこ
とは、ハード量が少なくてすむので、装置をコンパクト
な構造とすることができる。(Effects of the Invention) As explained above, the synchronization method of the present invention, which uses a signal generated by continuously changing the frequency within an arbitrary time as a synchronization signal, can be used even on voice band or narrow band transmission lines. There is an advantage that a synchronization signal with sufficient autocorrelation can be transmitted within a limited short time. In addition, it does not require both a bit synchronization circuit and a frame synchronization circuit as in the past, and it does not have low frequency components like a PN code, so it is a transmission line that does not pass low frequencies like a voice band transmission line. Also, since there is no need to perform modulation using subcarriers, there is an advantage that modulation/demodulation circuits for phase modulation, frequency modulation, etc. for this purpose are not required. This allows the device to have a compact structure since only a small amount of hardware is required.
第１図は本発明による同期方式を用いた一実施例を示す
ブロック図、第２図は本発明における同期信号の一波形
例で、（ａ）は時間と周波数との関係を示す曲線、（ｂ
）は同期信号の波形例、第３図は従来のＰＮ同期方式を
用いた構成例を示すブロック図、第４図は従来のＰＮ同
期方式による同期信号の波形例で、（ａ）はＰＮ符号の
波形例、（ｂ）は該ＰＮ符号をＰＳＫ変調した場合の波
形例である。
】・・・同期信号入力端子、 ２・・・ソフトレジス
タ、 ３．５・・・並列出力、 ４・・・パターン
一致回路、 ６．８・・・同期信号発生回路、 ７
・・・同期判定結果出力端子、 ９・・・同期信号出
力端子。FIG. 1 is a block diagram showing an embodiment using a synchronization method according to the present invention, and FIG. 2 is an example of a waveform of a synchronization signal according to the present invention. (a) is a curve showing the relationship between time and frequency; b
) is an example of the waveform of a synchronization signal, Fig. 3 is a block diagram showing a configuration example using the conventional PN synchronization method, Fig. 4 is an example of the waveform of a synchronization signal using the conventional PN synchronization method, and (a) is a PN code. (b) is a waveform example when the PN code is PSK modulated. ]...Synchronization signal input terminal, 2...Soft register, 3.5...Parallel output, 4...Pattern matching circuit, 6.8...Synchronization signal generation circuit, 7
... Synchronization judgment result output terminal, 9... Synchronization signal output terminal.
Claims (1)
従って任意の時間内で周波数を連続的に変化させること
により生成した同期信号を同期信号として送信し、受信
側において前記同期信号と同一の信号を発生させ、該信
号と受信した前記同期信号との相関をとり同期判定をし
、その結果を用いて送信側と受信側の同期をとることを
特徴とする同期方式。A synchronizing signal generated by continuously changing the frequency within an arbitrary time according to a predetermined function or signal format on the transmitting side is transmitted as a synchronizing signal, and a signal identical to the synchronizing signal is generated on the receiving side. A synchronization method characterized in that the signal is correlated with the received synchronization signal to determine synchronization, and the result is used to synchronize the transmitting side and the receiving side.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61310258A JPS63166334A (en) | 1986-12-27 | 1986-12-27 | Synchronizing system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61310258A JPS63166334A (en) | 1986-12-27 | 1986-12-27 | Synchronizing system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS63166334A true JPS63166334A (en) | 1988-07-09 |
| JPH0559624B2 JPH0559624B2 (en) | 1993-08-31 |
Family
ID=18003080
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP61310258A Granted JPS63166334A (en) | 1986-12-27 | 1986-12-27 | Synchronizing system |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS63166334A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8074544B2 (en) | 2008-02-15 | 2011-12-13 | Shin-Etsu Handotai Co., Ltd. | Cylindrical grinding apparatus and method for grinding |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5866442A (en) * | 1981-10-16 | 1983-04-20 | Fujitsu Ltd | Synchronizing circuit of optical highway frame |
| JPS5934202U (en) * | 1982-08-26 | 1984-03-02 | 三洋電機株式会社 | oven |
| JPS59128843A (en) * | 1983-01-12 | 1984-07-25 | Showa Electric Wire & Cable Co Ltd | System for transmitting supervisory signal |
-
1986
- 1986-12-27 JP JP61310258A patent/JPS63166334A/en active Granted
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5866442A (en) * | 1981-10-16 | 1983-04-20 | Fujitsu Ltd | Synchronizing circuit of optical highway frame |
| JPS5934202U (en) * | 1982-08-26 | 1984-03-02 | 三洋電機株式会社 | oven |
| JPS59128843A (en) * | 1983-01-12 | 1984-07-25 | Showa Electric Wire & Cable Co Ltd | System for transmitting supervisory signal |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8074544B2 (en) | 2008-02-15 | 2011-12-13 | Shin-Etsu Handotai Co., Ltd. | Cylindrical grinding apparatus and method for grinding |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0559624B2 (en) | 1993-08-31 |
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