JPS60140948A - Signal transmission system - Google Patents

Signal transmission system

Info

Publication number
JPS60140948A
JPS60140948A JP25035283A JP25035283A JPS60140948A JP S60140948 A JPS60140948 A JP S60140948A JP 25035283 A JP25035283 A JP 25035283A JP 25035283 A JP25035283 A JP 25035283A JP S60140948 A JPS60140948 A JP S60140948A
Authority
JP
Japan
Prior art keywords
data
transmitted
modulation
carrier
carrier wave
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
Application number
JP25035283A
Other languages
Japanese (ja)
Inventor
Takaoki Jinno
神野　隆起
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
NEC Corp
Original Assignee
NEC Corp
Nippon Electric Co Ltd
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 NEC Corp, Nippon Electric Co Ltd filed Critical NEC Corp
Priority to JP25035283A priority Critical patent/JPS60140948A/en
Publication of JPS60140948A publication Critical patent/JPS60140948A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L7/00—Arrangements for synchronising receiver with transmitter
    • H04L7/04—Speed or phase control by synchronisation signals
    • H04L7/06—Speed or phase control by synchronisation signals the synchronisation signals differing from the information signals in amplitude, polarity or frequency or length

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Synchronisation In Digital Transmission Systems (AREA)

Abstract

PURPOSE:To make substantially the transmission speed efficient by constituting a synchronizing code with one of FS codes and absence of carrier and transmitting the 2nd data with the combination of the said one wave and the absence of carrier and receiving it. CONSTITUTION:A modulator 3 transmits a frequency fH or a non-carrier NC at logical ''1'' of an input data and transmits fL at logical ''0''. The modulator 3 transmits the fH, fL at logical ''1'' and the NC at logical ''0''. Thus, the synchronizing code of the data 1 is transmitted with the AM modulation of the combination of the fH or fL and the NC same as the data 2 and the data part is transmitted by FS modulation with the fH, fL. The data part of the data 2 is transmitted by the AM modulation of the fH and the NC and the synchronizing code is transmitted with the AM modulation of the fH, fL and the NC. Then the data 1 is demodulated by an FS demodulation circuit and the data 2 is demodulated by an AM demodulation circuit at the reception side.

Description

【発明の詳細な説明】 〔産業上の利用分野〕 本発明は、信号伝送方式に関し、％に同期コードもデー
タの送受の対象とすることによシ、伝送時間の効率化を
計った信号伝送方式に関する。[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a signal transmission system, and the present invention provides a signal transmission method that improves the efficiency of transmission time by including a synchronization code as an object of data transmission and reception. Regarding the method.

〔従来技術〕[Prior art]

従来、同期コードをデータの前後に付加する信号伝送方
式においては、同期コードを所定のビット数だけ付加す
る必要があシ、この分データ伝送速度が実質的には低下
するという欠点があった。Conventionally, in a signal transmission system in which a synchronization code is added before and after data, it is necessary to add a predetermined number of bits of the synchronization code, which has the disadvantage that the data transmission speed is substantially reduced.

〔発明の目的〕[Purpose of the invention]

本発明は、上記欠点に鑑みてなされたもので、同期コー
ドをＦＳ波のうちの１波と搬送波無しによ多構成し、逆
に上記１波と搬送波無しの組合せで第二のデータを送信
し、これを受信することによシ、上記欠点を解決し、伝
送速度の実質的効率化を計った信号伝送方式を提供する
ものである。The present invention was made in view of the above-mentioned drawbacks, and consists of a synchronization code consisting of one of the FS waves and no carrier wave, and conversely, the second data is transmitted using a combination of the above-mentioned one wave and no carrier wave. However, by receiving this information, the above-mentioned drawbacks are solved and a signal transmission system is provided which achieves substantial efficiency in transmission speed.

〔発明の構成〕[Structure of the invention]

上記目的を達成すべく本発明は、第一、第二の搬送波に
よシＦＳ信号伝送しようとする第一のデータの前後に、
同期コードを付加して伝送するＦＳ信号伝送方式におい
て、該同期コードを、ＦＳ信号の第一の搬送波と搬送波
無しの組合せで送受信し、かつＦＳ信号の第二搬送波を
送受信しない時、同期コードを受信したと判断し、一方
、第二のデータを該第−の搬送波と搬送波無しの組合せ
で送信し、受信側では、第二のデータおよび同期コード
を、第一のデータと区別して各々復調して得ることを特
徴とする。In order to achieve the above object, the present invention provides the following features:
In the FS signal transmission method in which a synchronization code is added and transmitted, the synchronization code is transmitted and received using a combination of the first carrier wave of the FS signal and no carrier wave, and when the second carrier wave of the FS signal is not transmitted or received, the synchronization code is transmitted. On the other hand, the second data is transmitted using a combination of the second carrier wave and no carrier wave, and the receiving side demodulates the second data and the synchronization code separately from the first data. It is characterized by the fact that it can be obtained.

〔実施例〕〔Example〕

本発明の実施例について図面を参照して説明する。 Embodiments of the present invention will be described with reference to the drawings.

第１図は本発明信号伝送方式の一実施例を示すブロック
図である。FIG. 1 is a block diagram showing an embodiment of the signal transmission system of the present invention.

同図において、１は第１のデータの入力端、２は第２の
データの入力端、３は第１のデータおよび第２のデータ
をＦＳおよびＡＭ変調する変調器。In the figure, 1 is a first data input terminal, 2 is a second data input terminal, and 3 is a modulator that performs FS and AM modulation on the first data and the second data.

４は伝送路、５はＦＳおよびＡＭの復調器、６はデータ
１の出力端、７はデータ２の出力端である。4 is a transmission path, 5 is an FS and AM demodulator, 6 is an output end for data 1, and 7 is an output end for data 2.

次に、上記実施例の動作について、第２図をも参照して
説明する。Next, the operation of the above embodiment will be explained with reference to FIG. 2 as well.

第２図は伝送波形図であって、囚はデータｌのビット構
成、■はデータ２のビット構成、０は伝送波形図である
。FIG. 2 is a transmission waveform diagram, in which symbol 1 is the bit configuration of data 1, ■ is the bit configuration of data 2, and 0 is the transmission waveform diagram.

先づ、送信側の動作について説明する。First, the operation on the transmitting side will be explained.

変調器３では、入力するデータｌに対して、論理値１（
以下「１」と略記する。）は、周波数ｆＨまたは無搬送
波ＮＣを送出する。また、論理値０（以下ｒＯＪと略記
する。）に対しては、周波数ｆＩ、を送出する。In the modulator 3, the logical value 1 (
Hereinafter, it will be abbreviated as "1". ) transmits frequency fH or carrier-free NC. Furthermore, for a logical value 0 (hereinafter abbreviated as rOJ), a frequency fI is transmitted.

一方、入力データ２に対しては、「１」に対して周波数
ｆＨまたはｆＬを、「０」に対して無搬送波ＮＣを送出
する。On the other hand, for input data 2, the frequency fH or fL is transmitted for "1", and the non-carrier wave NC is transmitted for "0".

従って、データ１については、同期コードは、データ２
と同じ周波数ｆＨまたはｆＬと無搬送波ＮＣを組合せた
ＡＭ変調によって、データ部は、周波数ｆＨ、ｆＬによ
るＦＳ変調によって各々伝送路４に送出される。Therefore, for data 1, the synchronization code is
The data part is transmitted to the transmission path 4 by AM modulation using the same frequency fH or fL and carrier-free NC in combination, and by FS modulation using frequencies fH and fL.

データ２について、データは、周波数ｆＨと無搬送波Ｎ
ＣによるＡＭ変調によシ、また、同期コードは、周波数
ｆＨ、ｆＬと無搬送波ＮＣのＡＭ変調によシ伝送路４に
送出される。Regarding data 2, the data is frequency fH and non-carrier N
Furthermore, the synchronization code is sent to the transmission line 4 by AM modulation of frequencies fH and fL and carrierless NC.

次に、受信側の動作について説明する。Next, the operation on the receiving side will be explained.

復調器５は、ＦＳ復調回路とＡＭ復調回路とから構成さ
れる。ＦＳ復調回路は、周波数ｆＨまたは無搬送波ＮＯ
を「１」９周波数ｆＬを「０」に復調する。ＡＭ復調回
路は、周波数ｆＨｔたけｆＬ　ｔ「１」、無搬送波ＮＣ
を「０」に復調する。The demodulator 5 is composed of an FS demodulation circuit and an AM demodulation circuit. The FS demodulation circuit uses frequency fH or carrier-free NO
Demodulates the nine frequencies fL to "1" and "0". The AM demodulation circuit has a frequency of fHt and fLt of "1", and a carrier-free NC.
demodulates to "0".

即ち、データ１は、ＦＳ変調回路によって復調、データ
２は、ＡＭ復調回路によって復調される。That is, data 1 is demodulated by the FS modulation circuit, and data 2 is demodulated by the AM demodulation circuit.

〔発明の効果〕〔Effect of the invention〕

以上説明した様に、本発明は、同期コードをＡＭ変調に
よってデータの送受対象とする方式を行なうことによシ
、伝送効率の上昇が計られるという効果がある。As explained above, the present invention has the effect of increasing the transmission efficiency by using a method in which the synchronization code is used as the data transmission/reception target by AM modulation.

【図面の簡単な説明】[Brief explanation of the drawing]

第１図は本発明信号伝送方式の一実施例を示すブロック
図、第２図はその伝送波形を示し、■はデータ１０ビツ
ト構成図、（６）はデータ２０ビツト構成図、０は伝送
波形図である。 １・・・第１のデータ入力端 ２・・・第２のデータ入力端 ３・・・変調器 ４・・・伝送路 ５・・・復調器 ６・・・第１のデータ出力端 ７・・・第２のデータ出力端 出願人　日本電気株式会社Fig. 1 is a block diagram showing an embodiment of the signal transmission method of the present invention, Fig. 2 shows its transmission waveform, ■ is a 10-bit data configuration diagram, (6) is a data 20-bit configuration diagram, 0 is a transmission waveform It is a diagram. 1... First data input terminal 2... Second data input terminal 3... Modulator 4... Transmission line 5... Demodulator 6... First data output terminal 7. ...Second data output terminal applicant NEC Corporation

Claims (1)

【特許請求の範囲】[Claims] 第一、第二の搬送波にてＦＳ信号伝送しようとする第一
のデータの前後に、同期コードを付加して伝送するＦＳ
信号伝送方式において、上記同期コードを、ＦＳ信号の
第一の搬送波と搬送波無しの組合せで送受信し、かつ、
ＦＳ信号の第二搬送波を送受信しない時、同期コードを
受信したと判断し、一方、第二のデータを該第−の搬送
波と搬送波無しの組合せで送信し、受信側では、第二の
データおよび同期コードを、第一のデータと区別して各
々後調して成ることを特徴とする信号伝送方式。FS that adds a synchronization code before and after the first data to be transmitted as an FS signal using the first and second carrier waves.
In the signal transmission method, the synchronization code is transmitted and received using a combination of a first carrier wave of the FS signal and no carrier wave, and
When the second carrier wave of the FS signal is not transmitted or received, it is determined that the synchronization code has been received, and on the other hand, the second data is transmitted using a combination of the second carrier wave and no carrier wave, and the receiving side transmits the second data and the second carrier wave. A signal transmission method characterized in that a synchronization code is differentiated from first data and is later-adjusted.
JP25035283A 1983-12-27 1983-12-27 Signal transmission system Pending JPS60140948A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP25035283A JPS60140948A (en) 1983-12-27 1983-12-27 Signal transmission system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP25035283A JPS60140948A (en) 1983-12-27 1983-12-27 Signal transmission system

Publications (1)

Publication Number Publication Date
JPS60140948A true JPS60140948A (en) 1985-07-25

Family

ID=17206636

Family Applications (1)

Application Number Title Priority Date Filing Date
JP25035283A Pending JPS60140948A (en) 1983-12-27 1983-12-27 Signal transmission system

Country Status (1)

Country Link
JP (1) JPS60140948A (en)

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