GR910100504A - Method and arrangement for the transmission of coded data - Google Patents
Method and arrangement for the transmission of coded dataInfo
- Publication number
- GR910100504A GR910100504A GR910100504A GR910100504A GR910100504A GR 910100504 A GR910100504 A GR 910100504A GR 910100504 A GR910100504 A GR 910100504A GR 910100504 A GR910100504 A GR 910100504A GR 910100504 A GR910100504 A GR 910100504A
- Authority
- GR
- Greece
- Prior art keywords
- signals
- frequency
- broadcast
- modulated
- coded data
- Prior art date
Links
Abstract
A method of radio broadcasting coded data placed on a traditional frequency modulation transmitter includes: modulation of coded data to be broadcast by frequency shift at a predetermined frequency range, between approximately 15 and 18 KHz, to produce modulated coded signals; mixing of the modulated coded signals with low frequency signals of the above mentioned traditional mixed signal broadcast program with a frequency modulation radio transmitter, (20) where the divergence ratio of the frequency of the coded signals modulated by frequency shift, expressed in HERTZ, in proportion to the broadcast ratio of the coded data to be broadcast, expressed in BAUDS, is maintained between 85 and 120 percent. The method also includes the attenuation stage of the modulated coded signals at approximately 20 to 40 dB relative to the instantaneous broadcast level of the low frequency signals of a traditional program, where the attenuation ratio of modulated coded signals depends continually on the instantaneous level of low frequency signals of the above mentioned traditional program.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GR91100504 | 1991-12-18 |
Publications (1)
Publication Number | Publication Date |
---|---|
GR910100504A true GR910100504A (en) | 1993-08-31 |
Family
ID=10940828
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GR910100504A GR910100504A (en) | 1991-12-18 | 1991-12-18 | Method and arrangement for the transmission of coded data |
Country Status (1)
Country | Link |
---|---|
GR (1) | GR910100504A (en) |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4379947A (en) * | 1979-02-02 | 1983-04-12 | Teleprompter Corporation | System for transmitting data simultaneously with audio |
DE3311646A1 (en) * | 1983-03-30 | 1984-10-11 | Institut für Rundfunktechnik GmbH, 8000 München | Method for transmitting an additional signal in a stereophonic useful signal |
EP0135192A2 (en) * | 1983-09-16 | 1985-03-27 | Audicom Corporation | Encoding of transmitted program material |
EP0172095A1 (en) * | 1984-07-30 | 1986-02-19 | Dimitri Baranoff-Rossine | Method and arrangement for transmitting coded information by radio channel in superposition on a traditional frequency modulation transmission |
-
1991
- 1991-12-18 GR GR910100504A patent/GR910100504A/en unknown
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4379947A (en) * | 1979-02-02 | 1983-04-12 | Teleprompter Corporation | System for transmitting data simultaneously with audio |
DE3311646A1 (en) * | 1983-03-30 | 1984-10-11 | Institut für Rundfunktechnik GmbH, 8000 München | Method for transmitting an additional signal in a stereophonic useful signal |
EP0135192A2 (en) * | 1983-09-16 | 1985-03-27 | Audicom Corporation | Encoding of transmitted program material |
EP0172095A1 (en) * | 1984-07-30 | 1986-02-19 | Dimitri Baranoff-Rossine | Method and arrangement for transmitting coded information by radio channel in superposition on a traditional frequency modulation transmission |
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