IT1248029B - Process of extracting a signal synchronous with the frequency of an amplitude- or angle-modulated carrier - Google Patents
Process of extracting a signal synchronous with the frequency of an amplitude- or angle-modulated carrierInfo
- Publication number
- IT1248029B IT1248029B ITMI911601A ITMI911601A IT1248029B IT 1248029 B IT1248029 B IT 1248029B IT MI911601 A ITMI911601 A IT MI911601A IT MI911601 A ITMI911601 A IT MI911601A IT 1248029 B IT1248029 B IT 1248029B
- Authority
- IT
- Italy
- Prior art keywords
- angle
- frequency
- amplitude
- extracting
- modulated carrier
- Prior art date
Links
- 230000001360 synchronised effect Effects 0.000 title abstract 2
- 230000005236 sound signal Effects 0.000 abstract 1
Landscapes
- Transmitters (AREA)
Abstract
The invention relates to a process of extracting a signal (Fref) synchronous with the frequency (Fr) of an amplitude- or angle- modulated carrier, in which the carrier is transmitted by a reference transmitter and received by a conventional heterodyne receiver, which is suitably modified. The resulting synchronization signal (Fref) is locked directly to the nominal frequency (Fr) of the transmitter, independently of any angle or amplitude modulation imparted by an audio signal. This process provides a synchronization quality which is markedly better than that of systems used at present, for example those which attach a low frequency synchronization signal to a radio carrier. <IMAGE>
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
ITMI911601A IT1248029B (en) | 1991-06-11 | 1991-06-11 | Process of extracting a signal synchronous with the frequency of an amplitude- or angle-modulated carrier |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
ITMI911601A IT1248029B (en) | 1991-06-11 | 1991-06-11 | Process of extracting a signal synchronous with the frequency of an amplitude- or angle-modulated carrier |
Publications (3)
Publication Number | Publication Date |
---|---|
ITMI911601A0 ITMI911601A0 (en) | 1991-06-11 |
ITMI911601A1 ITMI911601A1 (en) | 1992-12-11 |
IT1248029B true IT1248029B (en) | 1995-01-05 |
Family
ID=11360090
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
ITMI911601A IT1248029B (en) | 1991-06-11 | 1991-06-11 | Process of extracting a signal synchronous with the frequency of an amplitude- or angle-modulated carrier |
Country Status (1)
Country | Link |
---|---|
IT (1) | IT1248029B (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2008110992A1 (en) * | 2007-03-15 | 2008-09-18 | Selex Communications S.P.A. | Improvements to synchronization methods for single-frequency simulcast mobile radio communication networks |
-
1991
- 1991-06-11 IT ITMI911601A patent/IT1248029B/en active IP Right Grant
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2008110992A1 (en) * | 2007-03-15 | 2008-09-18 | Selex Communications S.P.A. | Improvements to synchronization methods for single-frequency simulcast mobile radio communication networks |
RU2461134C2 (en) * | 2007-03-15 | 2012-09-10 | Селекс Коммьюникейшнз С.П.А. | Improvements to synchronisation methods for single-frequency simulcast mobile radio communication networks |
US8688155B2 (en) | 2007-03-15 | 2014-04-01 | Selex Communications S.P.A. | Synchronization methods for single-frequency simulcast mobile radio communication networks |
Also Published As
Publication number | Publication date |
---|---|
ITMI911601A0 (en) | 1991-06-11 |
ITMI911601A1 (en) | 1992-12-11 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
0001 | Granted | ||
TA | Fee payment date (situation as of event date), data collected since 19931001 |
Effective date: 19970630 |