JPS6356044A - Transmitting method for digital data - Google Patents

Transmitting method for digital data

Info

Publication number
JPS6356044A
JPS6356044A JP61199461A JP19946186A JPS6356044A JP S6356044 A JPS6356044 A JP S6356044A JP 61199461 A JP61199461 A JP 61199461A JP 19946186 A JP19946186 A JP 19946186A JP S6356044 A JPS6356044 A JP S6356044A
Authority
JP
Japan
Prior art keywords
bit
data
level
bits
digital data
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
JP61199461A
Other languages
Japanese (ja)
Inventor
Osamu Yoshikawa
治 吉川
Masamiki Kachi
加地　正幹
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.)
SMK Corp
Original Assignee
SMK Corp
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 SMK Corp filed Critical SMK Corp
Priority to JP61199461A priority Critical patent/JPS6356044A/en
Publication of JPS6356044A publication Critical patent/JPS6356044A/en
Pending legal-status Critical Current

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  • Dc Digital Transmission (AREA)
  • Synchronisation In Digital Transmission Systems (AREA)

Abstract

PURPOSE:To eliminate the need for bit designation of a data. by adopting a biphase form with different level to the first and latter halves of digital data, adding at least one bit to the start bit of the data and adding at least 3-bit of the same level to the the end bit and sending the resulting data. CONSTITUTION:The first half of a bit period is set to a low level L and a latter half is set to a high level H for data bits 1, and the first half of the bit period is set to a high level H and the latter half is set to a low level L for data bits 0. Then a 1-bit high level H is given to the start bit of the data and a 3-bit low level L is given to the end bit. When data 1 or 0 appears alternately, the same level is consecutive for 2-bit but is not consecutive more. When the data 1 or 0 are cosecutive, only one same level appears. Thus, when at least 3-bit of the same level is consecutive, it is discriminated to be the end bit even without bit designation.

Description

【発明の詳細な説明】 「産業上の利用分野］ 本発明は、送信すべきディジタルデータのビット指定を
しなくとも、エンドビットとディジタルデータの区別の
つくようしこしたディンタル信−シの送信方法に関する
ものである。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention is directed to the transmission of a digital signal in which end bits and digital data can be distinguished without specifying the bits of the digital data to be transmitted. It is about the method.

「従来の技術」 一般に、ディジタルデータを送信する場合には、最初に
スター１−ビットを送り、次にデータビン１−を送り最
後にエンドビットを送る。``Prior Art'' Generally, when transmitting digital data, a star 1-bit is first sent, then a data bin 1- is sent, and finally an end bit is sent.

しかるに、従来はこれらのビットの他にデータビットと
エンドビットを明白に区別するため、データのピント数
を予め指定するビットを送らなけ、１゜ばならなかった
。However, in the past, in addition to these bits, in order to clearly distinguish between data bits and end bits, a bit had to be sent to specify the number of data points in advance, which had to be 1°.

「発明が解決しようとする問題点」 データのビット数を予めを指定する従来の方法では、デ
ータ数が多くなったり、データ数が異なったりすると、
データのピッ＋−数指定が煩わしく、かつ不正確になり
、正しくデータを伝送できなくなるという問題があった
。``Problems to be solved by the invention'' In the conventional method of specifying the number of bits of data in advance, when the number of data increases or the number of data differs,
There is a problem in that specifying the number of data pins is cumbersome and inaccurate, making it impossible to transmit data correctly.

「問題点を解決するための手段」 本発明は上述のような問題点を解決するためになされた
もので、ディジタルデータ「１」と「０」をそれぞれ前
半と後半でレベルの異なるバイフェーズとし、このデー
タのスタートに少なくともｌビノト、エンドに同一レベ
ルの少なくとも３ビツトを付加して送信するようにした
伝送方法である。"Means for Solving the Problem" The present invention was made to solve the above-mentioned problem, and the present invention is made to solve the above-mentioned problem. In this transmission method, at least 1 bit is added to the start of the data, and at least 3 bits of the same level are added to the end of the data.

ｒ作用」 データｒｌＪまたは「０」が交互にあられれると、同一
レベルが２ビツト連続するがそれ以上は連続しない。ま
た、データ「１」または「０」が連続すると、同一レベ
ルは１ビツトだけとなる。そのため、同一レベルの少な
くとも３ビツトが連続したときはデータのビット指定な
しでもエンドビットと判断されてデータが次段へ送られ
る。r effect" When the data rlJ or "0" appear alternately, two bits of the same level will continue, but no more will continue. Furthermore, when data "1" or "0" continues, only one bit has the same level. Therefore, when at least three consecutive bits of the same level occur, it is determined to be an end bit even if no data bit is designated, and the data is sent to the next stage.

「実施例」 以下、本発明の実施例を図面に基づき説明する。"Example" Embodiments of the present invention will be described below based on the drawings.

本発明では、データは第２図に示すようなパイフェーズ
のマンチェスターコードが使用される。In the present invention, a pi-phase Manchester code as shown in FIG. 2 is used as data.

すなわち、データｒｌＪのときはビット期＋１ｆｌの前
半を低レベル（Ｌ）、後半を高レベル（１１）とし、ま
た、データが「０」のときはビット期間の前半を高レベ
ル（Ｈ）、後半を低レベル（Ｌ）とする。また、第１図
に示すようにデータのスタートに１ビツトの高レベル（
Ｉ］）、エンドに３ビツトの低レベル（Ｌ）を付加する
。例えば第１図に示すようなデータ１，０゜１．０，０
．０を送信するものとすると、最初にスタートビットと
して１１が送られ、つぎにデータビットとして、ｒ　Ｌ
　、　ｌ（Ｊ　ｒ　Ｈ、Ｌ　Ｊ　ｒ　Ｌ　、　ｌ−Ｉ　
Ｊ　ｒ　Ｈ、ｒ−Ｊ　ｒ　Ｈ、Ｌ　Ｊｒｌ−１，１、」
が送られる。ｒ　Ｌ　、　Ｌ　、　Ｌ　Ｊと３つのＬが
続くとエンドビットであると判断して、送り込まれたデ
ータを次段へ送り込み、つどのスター１〜ビツト（＋−
（’）から新たなデータを読み込む。That is, when the data is rlJ, the first half of the bit period + 1fl is set to low level (L) and the second half is set to high level (11), and when the data is "0", the first half of the bit period is set to high level (H) and the second half is set to high level (11). is set to low level (L). Also, as shown in Figure 1, a 1-bit high level (
I]), adds 3 bits of low level (L) to the end. For example, data 1,0°1.0,0 as shown in Figure 1
．． If 0 is to be transmitted, 11 is first sent as the start bit, then r L as the data bit.
, l(J r H, L J r L, l-I
J r H, r-J r H, L Jrl-1,1,”
will be sent. When three L's (L, L, LJ) continue, it is determined that it is an end bit, and the input data is sent to the next stage, and the bits from star 1 to bit (+-
Read new data from (').

なお、データが「０」のときｒｌｌ、ＬＪ、ｒｌＪのと
きｒ　Ｌ　、　ＨＪのように第１図とは逆の論理とする
こともできる。また、スタートビットをｒ　＋−Ｊ　、
エンドビットをｒ　Ｈ、Ｈ、Ｉ−（Ｊとしてもよい。さ
らにスタートビットは１ビツトでよいが、２ビツト以」
−とすることもでき、またエンドビットは３ピツ１〜で
よいが４ビット以−ヒとすることもできる。Note that the logic can be reversed to that in FIG. 1, such as when the data is "0", rll, LJ, and when rlJ, r L, HJ. Also, the start bit is r + − J,
The end bit may be set to rH, H, I-(J. Furthermore, the start bit may be 1 bit, but it may be 2 or more bits.
-, and the end bits may be 3 bits or more, but may be 4 bits or more.

「発明の効果」 本発明は上述のような伝送方法としたので、エンドビッ
トとデータビットを誤ることがなく、正確なデータ伝送
ができ、しかも、データのビット数に拘らず、データの
ビット指定を不要としだので、すなわちビットフリーと
したので取扱いが極めて容易であるなどの効果を有する
。``Effects of the Invention'' Since the present invention employs the above-described transmission method, it is possible to accurately transmit data without making a mistake between the end bit and the data bit. Since it is unnecessary, that is, it is bit-free, it has the advantage of being extremely easy to handle.

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

第１図は本発明による伝送方法を説明するための送信デ
ータの波形図、第２図はバイフェーズによるデータの波
形図である。 出願人　　ニスエムケイ株式会社 同　　　弁理士　加　納　−男□。 第　　　１　　図 第２図FIG. 1 is a waveform diagram of transmission data for explaining the transmission method according to the present invention, and FIG. 2 is a waveform diagram of biphase data. Applicant: Niss MK Co., Ltd. Patent attorney: Kano - Male□. Figure 1 Figure 2

Claims (2)

【特許請求の範囲】[Claims] （１）バイナリコードからなるディジタルデータをそれ
ぞれビットの前半と後半でレベルの異なるバイフェーズ
とし、このデータの最初にスタートビットとして少なく
とも１ビットを付加し、このデータの最後に、エンドビ
ットとして同一レベルの少なくとも３ビットを付加して
送信することを特徴とするディジタルデータの伝送方法
。(1) Digital data consisting of binary code is bi-phased with different levels in the first half and second half of each bit, at least one bit is added as a start bit at the beginning of this data, and the same level is added as an end bit at the end of this data. A method of transmitting digital data, the method comprising: adding at least 3 bits to the digital data before transmitting the data. （２）ディジタルデータの「１」を「Ｌ、Ｈ」、「０」
を「Ｈ、Ｌ」、スタートビットを「Ｈ」、エンドビット
を「Ｌ、Ｌ、Ｌ」とした特許請求の範囲第１項記載のデ
ィジタルデータの伝送方法。(2) Digital data “1” as “L, H”, “0”
The digital data transmission method according to claim 1, wherein the start bit is "H," and the end bit is "L, L, L."
JP61199461A 1986-08-26 1986-08-26 Transmitting method for digital data Pending JPS6356044A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP61199461A JPS6356044A (en) 1986-08-26 1986-08-26 Transmitting method for digital data

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP61199461A JPS6356044A (en) 1986-08-26 1986-08-26 Transmitting method for digital data

Publications (1)

Publication Number Publication Date
JPS6356044A true JPS6356044A (en) 1988-03-10

Family

ID=16408185

Family Applications (1)

Application Number Title Priority Date Filing Date
JP61199461A Pending JPS6356044A (en) 1986-08-26 1986-08-26 Transmitting method for digital data

Country Status (1)

Country Link
JP (1) JPS6356044A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8496826B2 (en) 2003-04-23 2013-07-30 Asahi Kasei Medical Co., Ltd. Body fluid treating device of hollow fiber membrane type
US8828225B2 (en) 2004-08-06 2014-09-09 Asahi Kasei Medical Co., Ltd. Polysulfone hemodialyzer

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS564073A (en) * 1979-06-25 1981-01-16 Toshiba Corp Sound source detector

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS564073A (en) * 1979-06-25 1981-01-16 Toshiba Corp Sound source detector

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8496826B2 (en) 2003-04-23 2013-07-30 Asahi Kasei Medical Co., Ltd. Body fluid treating device of hollow fiber membrane type
US8828225B2 (en) 2004-08-06 2014-09-09 Asahi Kasei Medical Co., Ltd. Polysulfone hemodialyzer

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