JPS6438045U - - Google Patents
Info
- Publication number
- JPS6438045U JPS6438045U JP12952687U JP12952687U JPS6438045U JP S6438045 U JPS6438045 U JP S6438045U JP 12952687 U JP12952687 U JP 12952687U JP 12952687 U JP12952687 U JP 12952687U JP S6438045 U JPS6438045 U JP S6438045U
- Authority
- JP
- Japan
- Prior art keywords
- demodulator
- modulator
- communication device
- optical fiber
- optical communication
- 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
- 239000013307 optical fiber Substances 0.000 claims description 4
- 230000003287 optical effect Effects 0.000 claims description 3
- 238000010586 diagram Methods 0.000 description 5
Landscapes
- Optical Communication System (AREA)
Description
第１図は本考案による光通話器の回路構成を示
すブロツク図、第２図は本考案のＰＦＭ変調の一
実施例を示す回路図、第３図はＰＦＭ復調の一実
施例を示す回路図、第４図は従来のＡＭ変調のブ
ロツク図、第５図は同じく従来のＰＣＭ変調のブ
ロツク図である。
１……マイク、２……マイクアンプ、３……変
調器（ＰＦＭ変調器）、４……ＡＰＣ回路、５…
…発光モジユール、６，６′……光フアイバコネ
クタ、７，７′……光フアイバ、８……受光モジ
ユール、９……プリアンプ、１０……復調器（Ｐ
ＦＭ復調器）、１１……パワーアンプ、１２……
ヘツドホン、１３……Ｖ／ＦコンバータＩＣ、１
４……ＰＬＬＩＣ。
Fig. 1 is a block diagram showing the circuit configuration of an optical communication device according to the present invention, Fig. 2 is a circuit diagram showing an embodiment of PFM modulation of the invention, and Fig. 3 is a circuit diagram showing an embodiment of PFM demodulation. , FIG. 4 is a block diagram of conventional AM modulation, and FIG. 5 is a block diagram of conventional PCM modulation. 1...Microphone, 2...Mic amplifier, 3...Modulator (PFM modulator), 4...APC circuit, 5...
...Emitting module, 6, 6'... Optical fiber connector, 7, 7'... Optical fiber, 8... Light receiving module, 9... Preamplifier, 10... Demodulator (P
FM demodulator), 11... power amplifier, 12...
Headphone, 13...V/F converter IC, 1
4...PLLIC.
Claims (1)
ユールと光フアイバコネクタと光フアイバと受光
モジユールとプリアンプと復調器とパワーアンプ
とからなる光通話器において、前記変調器と復調
器とにそれぞれパルス化ＦＭ変調器と復調器とを
使用したことを特徴とする光通話器。 In an optical communication device consisting of a microphone amplifier, a modulator, an APC circuit, a light emitting module, an optical fiber connector, an optical fiber, a light receiving module, a preamplifier, a demodulator, and a power amplifier, the modulator and the demodulator each perform pulsed FM modulation. An optical communication device characterized by using a receiver and a demodulator.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12952687U JPS6438045U (en) | 1987-08-26 | 1987-08-26 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12952687U JPS6438045U (en) | 1987-08-26 | 1987-08-26 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6438045U true JPS6438045U (en) | 1989-03-07 |
Family
ID=31383883
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP12952687U Pending JPS6438045U (en) | 1987-08-26 | 1987-08-26 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6438045U (en) |
-
1987
- 1987-08-26 JP JP12952687U patent/JPS6438045U/ja active Pending
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