JPH03104355A - Reception circuit for fs carrier transmission system - Google Patents
Reception circuit for fs carrier transmission systemInfo
- Publication number
- JPH03104355A JPH03104355A JP1241334A JP24133489A JPH03104355A JP H03104355 A JPH03104355 A JP H03104355A JP 1241334 A JP1241334 A JP 1241334A JP 24133489 A JP24133489 A JP 24133489A JP H03104355 A JPH03104355 A JP H03104355A
- Authority
- JP
- Japan
- Prior art keywords
- waveform
- waveform change
- circuit
- monitor circuit
- noise
- 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
- 230000005540 biological transmission Effects 0.000 title claims description 15
- 230000002159 abnormal effect Effects 0.000 claims abstract description 7
- 238000001514 detection method Methods 0.000 claims abstract 3
- 238000012544 monitoring process Methods 0.000 claims description 12
- 238000000034 method Methods 0.000 claims description 3
- 230000000630 rising effect Effects 0.000 claims description 3
- 238000005070 sampling Methods 0.000 abstract description 8
- 238000004519 manufacturing process Methods 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 2
- 239000010931 gold Substances 0.000 description 2
- 229910052737 gold Inorganic materials 0.000 description 2
- 230000007257 malfunction Effects 0.000 description 2
- 238000005336 cracking Methods 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
Landscapes
- Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
この発明はＦＢ搬送波伝送方式の受信回路に関するもの
である。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a receiving circuit of an FB carrier wave transmission system.
第８図は特公昭５１−＋１５２５号公報に示された従来
の二元状態伝送方式による伝送装置の受信側復号化回路
金示す。FIG. 8 shows a receiving side decoding circuit of a transmission apparatus using the conventional two-state transmission method disclosed in Japanese Patent Publication No. 51-+1525.
図ＶＣカいて、｛１１ぽ榎号化回路の入力端子、（２１
ｌ．
ぱ復号化回路の出力端子、ｌ３Ｈｊ警報端子，（４）は
サンプリング回路、＋ｇｉｌはサンプリングゲート、｛
６１はシフトレジスタ、（７）は照合回路、（８）は監
視ｒｏｔ路である。In the figure, VC is shown, {11 is the input terminal of the encoder circuit, (21
l. output terminal of the decoding circuit, l3Hj alarm terminal, (4) is the sampling circuit, +gil is the sampling gate, {
61 is a shift register, (7) is a collation circuit, and (8) is a monitoring rotary path.
欠に幼作について説明する。復号化回路の入力端子＋ｌ
ｌに入力された受信符号は、サンプリン／グ回［８１４
１１サンプリングゲート（６１の働きにより，１ビット
毎にＶｌ １ ／／ “ ０“金判定され、シフト
レジスタ（６１に記憶される。そして、照合同路｛８｝
はシフトレジスタ｛６｝の内容が決められた一定の配列
となった場合にのみ出力端子＋２１に有意信号を出力し
、他の場合には無意信号を出力する。I will briefly explain about the early years. Input terminal of decoding circuit +l
The received code input to
By the action of the 11 sampling gate (61), Vl 1 // "0" is determined for each bit and stored in the shift register (61. Then, the matching gate {8}
outputs a significant signal to the output terminal +21 only when the contents of the shift register {6} are in a predetermined constant arrangement, and outputs an insignificant signal in other cases.
受信側復号化回路は以上のように構成されているので、
伝送路からの雑音の増加と共に見逃し誤り率も高くなる
問題点があった。Since the receiving side decoding circuit is configured as above,
There is a problem in that as the noise from the transmission path increases, the missed error rate also increases.
この発明は上記のような問題点ｔ−Ｓ消するために、受
信側復号化回路に伝送略からの異常雑音による誤動作を
起こさないように異常維音を検出する機ｉｔもたせるこ
と金目的としている●〔課題を解決するための手段〕
この発明に係るＦＢ搬送伝送方式の受信回路は、波形変
化監視回路を入力部に設けたものである。In order to eliminate the above-mentioned problem t-S, the purpose of this invention is to provide the receiving side decoding circuit with a mechanism for detecting abnormal fiber noise so as not to cause malfunction due to abnormal noise from the transmission circuit. ● [Means for Solving the Problems] The receiving circuit of the FB carrier transmission system according to the present invention is provided with a waveform change monitoring circuit at the input section.
この発明にかける波形変化監視回路は、人力される受信
符号の波形を常時監祝し、異常雑音によるビット波形割
れや雑音パルスの重畳金検出する。The waveform change monitoring circuit according to the present invention constantly monitors the waveform of a manually input received code, and detects bit waveform cracks due to abnormal noise and superimposition of noise pulses.
以下、この発明の一実施例金図について説明する。第１
図に釦いて、６Ｄは波形変化監視同路である。第８図は
波形変化監視回路６Ｑの内部ブロック図、第４図はその
タイムチャート金表わす。Hereinafter, a gold map as an embodiment of the present invention will be described. 1st
In the figure, 6D is a waveform change monitoring circuit. FIG. 8 is an internal block diagram of the waveform change monitoring circuit 6Q, and FIG. 4 is a time chart thereof.
仮号化回路の入力端子１１１に入力された営信符号は、
サンブリングゲー｝＋ｌＳｌ＆Ｃ入ると同時に、波形変
化監視回路５ｒＪにとり込筐れる。波形変化監視回路６
υぱ、常時入力される受信符号の波形変化金監視し，１
ビット長の時間内に、２回以上の波形変化が発生したこ
とを検出し、シ７トレジスタ１６＋ ｊｉリセットする
。これを第３図，第４図にわいて説明すると、受信符号
を立上り・立下りの微分Ｉｊｌ！ｌ路によりパルスとし
，一万、受信符号をビットの中央でサンプリングする。The transmission code input to the input terminal 111 of the temporary encoding circuit is
At the same time as entering the sampling game}+lSl&C, it is taken into the waveform change monitoring circuit 5rJ. Waveform change monitoring circuit 6
υ, constantly monitors the waveform change of the received code, 1
It is detected that two or more waveform changes have occurred within the time of the bit length, and the seat register 16+ji is reset. To explain this with reference to FIGS. 3 and 4, the received code is differentiated by rising and falling edges Ijl! The received code is sampled at the center of the bit by 10,000 pulses.
波形割れや雑音パルスがあると１ビット長の間に２個の
立上り・立下りパルスを発生する。そのためＦＦＩのＱ
出力時とサンプリングパルスとがｙｙｓのＴとＲとに入
力されＦ’ＦｇのＱから出力される。If there is waveform cracking or noise pulses, two rising and falling pulses are generated during one bit length. Therefore, FFI's Q
The output and sampling pulses are input to T and R of yys and output from Q of F'Fg.
したがってノイズの発生↑検出することができこの条件
でシフトレジスタ（６）全リセットする。Therefore, the occurrence of noise can be detected and the shift register (6) is completely reset under this condition.
なお第４図のタイムチャートより受信符号の波形ひずみ
による誤動作がない・と・とが分かる。Furthermore, it can be seen from the time chart of FIG. 4 that there is no malfunction due to waveform distortion of the received code.
筐た上記実施列では，二元状態伝送方式の場合について
説明したが，Ｆ８搬送波金用いる伝送装置であれば、他
の伝送装置でもよく、上記実施例と（ロ）様の効果ｆｔ
秦丁る。In the above embodiments, the case of the dual-state transmission method was explained, but any other transmission device may be used as long as it uses F8 carrier wave gold, and the effect of the above embodiment and (b) can be achieved.
Qin Dingru.
？上のように，この発明によれば伝送路に異常雑音が混
入し雑音が増加してもこれ倉検出できる同Ｆ１ｂを受信
側に設けたので、伝送路の品質の悪い伝送システムにわ
いても所定の信頼度ｔ維持できる効果がある。? As described above, according to the present invention, the same F1b is installed on the receiving side, which can detect even if abnormal noise gets mixed into the transmission line and the noise increases, so even if the transmission line has poor quality, it can be detected even if the noise increases. This has the effect of maintaining a predetermined reliability t.
第１図はこの発明の一実施列による復号化回路の回路図
、第８図は従来の復号化回路の回路図■、第８図は波形
変化監視回ＦｉｌＩＥｒＪの内部ブロック図、第◆図は
波形変化監視回路１５１の動作タイミングチャートであ
る。
図中， １１ ． １２１ｉｊ復号化回路の入力端子と
出力端子，（３）は警報端子、：４）はサンプリング回
路、＋５１はサンプリングゲート，＋６１はシフトレジ
スタ７）は照合回路％（８）は監視回路、ｒ１ηは波形
変化監視回路である。
なか、図中、同一符号は同一、又は相当部分を示す。Fig. 1 is a circuit diagram of a decoding circuit according to one embodiment of the present invention, Fig. 8 is a circuit diagram of a conventional decoding circuit. Fig. 8 is an internal block diagram of the waveform change monitoring circuit FilIErJ, and Fig. 5 is an operation timing chart of the waveform change monitoring circuit 151. In the figure, 11. The input terminal and output terminal of the 121ij decoding circuit, (3) is the alarm terminal, :4) is the sampling circuit, +51 is the sampling gate, +61 is the shift register 7) is the matching circuit, % (8) is the monitoring circuit, r1η is the waveform This is a change monitoring circuit. In the figures, the same reference numerals indicate the same or corresponding parts.
Claims (1)
信号の立上り・立下りを検出する手段と、この検出手段
で受信信号の１ビット長間に２個以上の検出信号がある
と異常雑音と判定する判定手段とを有する波形変化監視
回路を備えたことを特徴とするＦＳ搬送波伝送方式の受
信回路。In a transmission device using the FS carrier wave transmission method, there is a means for detecting the rising and falling edges of a received signal on the receiving side, and abnormal noise occurs if two or more detection signals are detected within one bit length of the received signal by this detecting means. 1. A receiving circuit for an FS carrier wave transmission system, comprising: a waveform change monitoring circuit having a determining means for determining.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1241334A JP2522408B2 (en) | 1989-09-18 | 1989-09-18 | Receiver circuit of FS carrier transmission system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1241334A JP2522408B2 (en) | 1989-09-18 | 1989-09-18 | Receiver circuit of FS carrier transmission system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH03104355A true JPH03104355A (en) | 1991-05-01 |
| JP2522408B2 JP2522408B2 (en) | 1996-08-07 |
Family
ID=17072756
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1241334A Expired - Lifetime JP2522408B2 (en) | 1989-09-18 | 1989-09-18 | Receiver circuit of FS carrier transmission system |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2522408B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8472909B2 (en) | 2008-05-21 | 2013-06-25 | Nxp, B.V. | Filter device for detecting and/or removing erroneous components in and/or from a signal |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5121525A (en) * | 1974-08-16 | 1976-02-20 | Daihatsu Motor Co Ltd | Chuzohinno sunaotoshihoho |
| JPS57199359A (en) * | 1981-06-02 | 1982-12-07 | Fuji Facom Corp | Serial data processing device |
| JPS63169141A (en) * | 1986-12-30 | 1988-07-13 | Shimadzu Corp | Transmission error detection circuit |
| JPS63288499A (en) * | 1987-05-20 | 1988-11-25 | Fujitsu Ltd | Reset circuit |
-
1989
- 1989-09-18 JP JP1241334A patent/JP2522408B2/en not_active Expired - Lifetime
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5121525A (en) * | 1974-08-16 | 1976-02-20 | Daihatsu Motor Co Ltd | Chuzohinno sunaotoshihoho |
| JPS57199359A (en) * | 1981-06-02 | 1982-12-07 | Fuji Facom Corp | Serial data processing device |
| JPS63169141A (en) * | 1986-12-30 | 1988-07-13 | Shimadzu Corp | Transmission error detection circuit |
| JPS63288499A (en) * | 1987-05-20 | 1988-11-25 | Fujitsu Ltd | Reset circuit |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8472909B2 (en) | 2008-05-21 | 2013-06-25 | Nxp, B.V. | Filter device for detecting and/or removing erroneous components in and/or from a signal |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2522408B2 (en) | 1996-08-07 |
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