JPS643229U - - Google Patents
Info
- Publication number
- JPS643229U JPS643229U JP1987094334U JP9433487U JPS643229U JP S643229 U JPS643229 U JP S643229U JP 1987094334 U JP1987094334 U JP 1987094334U JP 9433487 U JP9433487 U JP 9433487U JP S643229 U JPS643229 U JP S643229U
- Authority
- JP
- Japan
- Prior art keywords
- signal
- modulator
- audio
- modulation
- multiplex
- 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
- 230000007274 generation of a signal involved in cell-cell signaling Effects 0.000 claims description 2
- 230000005236 sound signal Effects 0.000 claims description 2
- 238000010586 diagram Methods 0.000 description 5
- 239000011159 matrix material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
Landscapes
- Stereo-Broadcasting Methods (AREA)
Description
第１図は本考案によるＦＭ多重信号発生装置の
構成を示すブロツク図、第２図は多重ＦＭ信号の
発生方式の原理を説明するブロツク図、第３図は
ＦＭ多重信号の周波数分布図、第４図はＦＭ多重
のベースバンド信号の波形図、第５図は周波数変
調器の信号対周波数特性図である。
１……音声入力ＥＲ、２……音声入力ＥＬ、３
……マトリクス、４……和信号ＥＭ、５……差Ｅ
Ｓ、６……パイロツト信号１９ｋHz（ｆｐ）、７
……３８ｋHz発生器（２ｆｐ）、８……振幅変調
器、９……加算回路、１０，１４……ＦＭ変調器
、１１……ＦＭ出力（音声）ＭＡ、１２……多重
データ信号、１３……極性変調（コード化）器、
１５……多重データ信号ＦＭ波ＭＤ、１６……乗
算回路、１７……帯域通過フイルタ、１８……総
合変調出力、１９……周波数逓倍（７６ｋHz発生
器）、２４……音声信号（ステレオ）ｅＡ′、２
５……音声用ＦＭ変調器、２６……多重信号（７
６ｋHz変調）ｅＤ、２７……多重用ＦＭ変調器、
２８……乗算回路、２９……帯域通過フイルタ、
３０……総合ＦＭ信号。
FIG. 1 is a block diagram showing the configuration of the FM multiplex signal generator according to the present invention, FIG. 2 is a block diagram explaining the principle of the multiplex FM signal generation method, FIG. 3 is a frequency distribution diagram of the FM multiplex signal, and FIG. FIG. 4 is a waveform diagram of an FM multiplexed baseband signal, and FIG. 5 is a signal versus frequency characteristic diagram of a frequency modulator. 1...Audio input ER, 2...Audio input EL, 3
... Matrix, 4 ... Sum signal EM, 5 ... Difference E
S, 6...Pilot signal 19kHz (f p ), 7
... 38kHz generator (2f p ), 8 ... Amplitude modulator, 9 ... Addition circuit, 10, 14 ... FM modulator, 11 ... FM output (audio) MA, 12 ... Multiplex data signal, 13 ...Polar modulation (coding) device,
15...Multiple data signal FM wave MD, 16...Multiplication circuit, 17...Band pass filter, 18...Total modulation output, 19...Frequency multiplication (76kHz generator), 24...Audio signal (stereo) eA ', 2
5...Audio FM modulator, 26...Multiple signal (7
6kHz modulation) eD, 27...FM modulator for multiplexing,
28...Multiplication circuit, 29...Band pass filter,
30...Comprehensive FM signal.
Claims (1)
器、および (c) 上記音声用ＦＭ変調器による音声変調信号
と上記多重用ＦＭ変調器による多重変調信号を乗
算する乗算回路 を具備することを特徴とするＦＭ多重信号発生装
置。[Claims for Utility Model Registration] (a) an audio modulator that performs FM modulation on audio signals, (b) a multiplexing FM modulator that performs FM modulation on multiple signal sources, and (c) audio produced by the audio FM modulator described above. An FM multiplex signal generation device comprising a multiplier circuit that multiplies a modulation signal and a multiplex modulation signal produced by the multiplexing FM modulator.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1987094334U JPH0424675Y2 (en) | 1987-06-19 | 1987-06-19 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1987094334U JPH0424675Y2 (en) | 1987-06-19 | 1987-06-19 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS643229U true JPS643229U (en) | 1989-01-10 |
| JPH0424675Y2 JPH0424675Y2 (en) | 1992-06-11 |
Family
ID=31318848
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1987094334U Expired JPH0424675Y2 (en) | 1987-06-19 | 1987-06-19 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0424675Y2 (en) |
-
1987
- 1987-06-19 JP JP1987094334U patent/JPH0424675Y2/ja not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0424675Y2 (en) | 1992-06-11 |
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