JPH024340U - - Google Patents
Info
- Publication number
- JPH024340U JPH024340U JP8235588U JP8235588U JPH024340U JP H024340 U JPH024340 U JP H024340U JP 8235588 U JP8235588 U JP 8235588U JP 8235588 U JP8235588 U JP 8235588U JP H024340 U JPH024340 U JP H024340U
- Authority
- JP
- Japan
- Prior art keywords
- code
- asynchronous
- transmission timing
- synchronous code
- frequency division
- 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 claims description 7
- 230000001360 synchronised effect Effects 0.000 claims description 7
- 238000006243 chemical reaction Methods 0.000 claims description 3
- 238000010586 diagram Methods 0.000 description 3
Landscapes
- Dc Digital Transmission (AREA)
- Communication Control (AREA)
Description
第１図ａ及びｂは本考案による符号変換装置の
一実施例を示す符号化部及び復号化部のブロツク
図、第２図は第１図の実施例における分周回路の
分周比Ｎが２の場合の変換出力信号を示す図、第
３図ａ及びｂは従来装置の一例を示す符号化部及
び復号化部のブロツク図、第４図は従来例による
変換出力信号を示す図である。
１……調歩式非同期符号（調歩符号）、２……
同期符号化出力、３……送信タイミングパルス、
４……受信タイミングパルス、５……受信同期符
号、１００……符号化部、１１１……送信タイミ
ング分周回路、１２０……復号化部、１３１……
受信タイミング分周回路。
1a and 1b are block diagrams of an encoding section and a decoding section showing one embodiment of the code conversion device according to the present invention, and FIG. 2 shows the frequency division ratio N of the frequency dividing circuit in the embodiment of FIG. 1. Figures 3a and 3b are block diagrams of an encoding unit and decoding unit showing an example of a conventional device, and Figure 4 is a diagram showing a converted output signal in the conventional example. . 1... Start-stop asynchronous code (start-stop code), 2...
Synchronous encoded output, 3... Transmission timing pulse,
4...Reception timing pulse, 5...Reception synchronization code, 100...Encoding section, 111...Transmission timing frequency dividing circuit, 120...Decoding section, 131...
Receive timing divider circuit.
Claims (1)
変換装置において、１対１の符号速度比で前記非
同期符号を同期符号へ変換する符号化部と、該符
号化部で同期符号化された非同期符号を逆に非同
期符号へ戻す復号化部と、外部から供給される同
期符号送信タイミング信号を分周比Ｎで分周する
送信タイミング分周回路と、外部から供給される
同期符号受信タイミング信号を分周比Ｎで分周す
る受信タイミング分周回路とを具備し、前記送信
タイミング分周回路の出力を前記符号化部の送信
タイミング信号として入力し、前記受信タイミン
グ分周回路の出力を前記復号化部の受信タイミン
グ信号として入力するようにしたことを特徴とす
る非同期／同期符号変換装置。 A code conversion device that converts an asynchronous code into a synchronous code, comprising: an encoding unit that converts the asynchronous code into a synchronous code at a code speed ratio of 1:1; and an asynchronous code synchronously encoded by the encoding unit. a decoding unit that converts the synchronous code into an asynchronous code; a transmission timing frequency dividing circuit that divides the synchronous code transmission timing signal supplied from the outside by a frequency division ratio N; and a transmission timing frequency divider circuit that divides the synchronous code reception timing signal supplied from the outside. a reception timing frequency division circuit that divides the frequency by a frequency ratio N, the output of the transmission timing frequency division circuit is input as a transmission timing signal of the encoding section, and the output of the reception timing frequency division circuit is inputted to the decoding section. 1. An asynchronous/synchronous code conversion device, characterized in that the signal is input as a reception timing signal of a part.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1988082355U JPH079470Y2 (en) | 1988-06-23 | 1988-06-23 | Asynchronous / synchronous code converter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1988082355U JPH079470Y2 (en) | 1988-06-23 | 1988-06-23 | Asynchronous / synchronous code converter |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH024340U true JPH024340U (en) | 1990-01-11 |
| JPH079470Y2 JPH079470Y2 (en) | 1995-03-06 |
Family
ID=31307114
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1988082355U Expired - Lifetime JPH079470Y2 (en) | 1988-06-23 | 1988-06-23 | Asynchronous / synchronous code converter |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH079470Y2 (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59194551A (en) * | 1983-04-20 | 1984-11-05 | Fujitsu Ltd | Data communication system |
-
1988
- 1988-06-23 JP JP1988082355U patent/JPH079470Y2/en not_active Expired - Lifetime
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59194551A (en) * | 1983-04-20 | 1984-11-05 | Fujitsu Ltd | Data communication system |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH079470Y2 (en) | 1995-03-06 |
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