JPH02134756U - - Google Patents
Info
- Publication number
- JPH02134756U JPH02134756U JP1989043222U JP4322289U JPH02134756U JP H02134756 U JPH02134756 U JP H02134756U JP 1989043222 U JP1989043222 U JP 1989043222U JP 4322289 U JP4322289 U JP 4322289U JP H02134756 U JPH02134756 U JP H02134756U
- Authority
- JP
- Japan
- Prior art keywords
- digital signal
- converts
- analog signal
- outputs
- section
- 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
- 230000005540 biological transmission Effects 0.000 claims description 3
- 238000001514 detection method Methods 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 3
Landscapes
- Small-Scale Networks (AREA)
- Transmitters (AREA)
- Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
- Transceivers (AREA)
Description
第１図は本考案によるデータ変復調装置の一実
施例を示すブロツク図、第２図は同実施例の動作
例を示すフローチヤート、第３図は従来からある
データ変復調装置の一例を示すブロツク図、第４
図は第３図に示すデータ変復調装置を用いた通信
システム例を示すブロツク図である。
１……送信部、２……受信部、３……レベル制
御部（レベル検出器）。
FIG. 1 is a block diagram showing an embodiment of a data modulation/demodulation device according to the present invention, FIG. 2 is a flowchart showing an example of the operation of the same embodiment, and FIG. 3 is a block diagram showing an example of a conventional data modulation/demodulation device. , 4th
This figure is a block diagram showing an example of a communication system using the data modulator/demodulator shown in FIG. 3. 1... Transmission section, 2... Receiving section, 3... Level control section (level detector).
Claims (1)
して回線上に送出する処理と、前記回線を介して
受信したアナログ信号をデジタル信号に変換して
出力する処理を行なうデータ変復調装置において
、前記回線を介して受信したアナログ信号をデジ
タル信号に変換して出力する受信部と、入力され
たデジタル信号をアナログ信号に変換して前記回
線上に送出する送信部と、前記受信部の受信レベ
ルを検知しこの検知結果に基づいて前記送信部の
送信レベルを制御するレベル制御部とを備えたこ
とを特徴とするデータ変復調装置。 In a data modulation/demodulation device that converts an input digital signal into an analog signal and sends it out on a line, and converts an analog signal received via the line into a digital signal and outputs it, a receiving section that converts the analog signal received by the receiver into a digital signal and outputs it; a transmitting section that converts the input digital signal into an analog signal and sends it out on the line; and a receiving section that detects the reception level of the receiving section and outputs the digital signal. A data modulation/demodulation device comprising: a level control section that controls a transmission level of the transmission section based on a detection result.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1989043222U JPH02134756U (en) | 1989-04-13 | 1989-04-13 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1989043222U JPH02134756U (en) | 1989-04-13 | 1989-04-13 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH02134756U true JPH02134756U (en) | 1990-11-08 |
Family
ID=31555456
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1989043222U Pending JPH02134756U (en) | 1989-04-13 | 1989-04-13 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH02134756U (en) |
-
1989
- 1989-04-13 JP JP1989043222U patent/JPH02134756U/ja active Pending
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