JPS5547777A - Modulation conversion system - Google Patents
Modulation conversion systemInfo
- Publication number
- JPS5547777A JPS5547777A JP11918278A JP11918278A JPS5547777A JP S5547777 A JPS5547777 A JP S5547777A JP 11918278 A JP11918278 A JP 11918278A JP 11918278 A JP11918278 A JP 11918278A JP S5547777 A JPS5547777 A JP S5547777A
- Authority
- JP
- Japan
- Prior art keywords
- modulation
- frequency
- signal consisting
- modulation conversion
- composite signal
- 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
Landscapes
- Details Of Television Systems (AREA)
- Television Systems (AREA)
Abstract
PURPOSE: To perform modulation conversion to TV composite signal consisting of FM-V and FM-A to TV broadcast signal consisting of FM-A(frequency modulation audio signal) and AM-V(amplitude modulation video signal), after direct frequency modulation for a given carrier with the output of intercarrier demodulator.
CONSTITUTION: TV broadcast signal consisting of AM-V and FM-A given to the input IN is composite signal consisting of video signal V and FM-A at the intercarrier demodulator ICDM, and after a given carrier fct having the frequency corresponding to the transmission frequency is in frequency modulation with the frequency modulator FMMD to obtain TV composite signal consisting of FM-V and FM-A from the output OUT. Thus, the circuit is simplified and modulation conversion of low cost and high fidelity can be made and it can be applied to the relay unit excellently.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP11918278A JPS5547777A (en) | 1978-09-29 | 1978-09-29 | Modulation conversion system |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP11918278A JPS5547777A (en) | 1978-09-29 | 1978-09-29 | Modulation conversion system |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5547777A true JPS5547777A (en) | 1980-04-04 |
JPS6242553B2 JPS6242553B2 (en) | 1987-09-09 |
Family
ID=14754931
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP11918278A Granted JPS5547777A (en) | 1978-09-29 | 1978-09-29 | Modulation conversion system |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5547777A (en) |
-
1978
- 1978-09-29 JP JP11918278A patent/JPS5547777A/en active Granted
Also Published As
Publication number | Publication date |
---|---|
JPS6242553B2 (en) | 1987-09-09 |
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