JPH048547U - - Google Patents
Info
- Publication number
- JPH048547U JPH048547U JP4862390U JP4862390U JPH048547U JP H048547 U JPH048547 U JP H048547U JP 4862390 U JP4862390 U JP 4862390U JP 4862390 U JP4862390 U JP 4862390U JP H048547 U JPH048547 U JP H048547U
- Authority
- JP
- Japan
- Prior art keywords
- output
- circuit
- switch
- pass filter
- low
- 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
Links
Landscapes
- Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
- Synchronisation In Digital Transmission Systems (AREA)
Description
第１図は本考案の全体構成を示すブロツク図、
第２図は従来のデータ再生回路を示すブロツク図
、第３図は第２図の各部の波形を示す図、第４図
は周波数弁別回路の特性を示す図、第５図は本考
案の一実施例を示す回路図である。
１……入力端子、２……低域フイルタ、３……
電圧比較器、４……比較電圧発生回路、５……出
力端子、６……スイツチ、７……積分回路、８…
…同期パターン検出回路、７１……抵抗、７２…
…コンデンサ。
Figure 1 is a block diagram showing the overall configuration of the present invention.
FIG. 2 is a block diagram showing a conventional data reproducing circuit, FIG. 3 is a diagram showing waveforms of each part in FIG. 2, FIG. 4 is a diagram showing characteristics of a frequency discrimination circuit, and FIG. FIG. 2 is a circuit diagram showing an example. 1...Input terminal, 2...Low pass filter, 3...
Voltage comparator, 4... Comparison voltage generation circuit, 5... Output terminal, 6... Switch, 7... Integrating circuit, 8...
...Synchronization pattern detection circuit, 71...Resistor, 72...
...capacitor.
Claims (1)
、低域フイルタと、前記低域フイルタの出力を接
断するスイツチと、前記スイツチの次段に接続さ
れた積分回路と、前記低域フイルタの出力電圧と
前記積分回路の出力電圧とを比較する電圧比較器
と、前記電圧比較器の出力から同期パターンを検
出しその出力で前記スイツチの接断を制御する同
期パターン検出回路とからなる無線機のデータ再
生回路。 A data reproducing circuit of a data transmission radio includes a low-pass filter, a switch that connects and disconnects the output of the low-pass filter, an integrating circuit connected to the next stage of the switch, and an output voltage of the low-pass filter. A data reproduction device for a radio device, which comprises a voltage comparator that compares the output voltage of the integrating circuit, and a synchronization pattern detection circuit that detects a synchronization pattern from the output of the voltage comparator and controls connection/disconnection of the switch using the output. circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4862390U JPH048547U (en) | 1990-05-11 | 1990-05-11 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4862390U JPH048547U (en) | 1990-05-11 | 1990-05-11 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH048547U true JPH048547U (en) | 1992-01-27 |
Family
ID=31565600
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4862390U Pending JPH048547U (en) | 1990-05-11 | 1990-05-11 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH048547U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5498599U (en) * | 1977-12-23 | 1979-07-12 |
-
1990
- 1990-05-11 JP JP4862390U patent/JPH048547U/ja active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5498599U (en) * | 1977-12-23 | 1979-07-12 |
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