ES467246A1 - Radio broadcasting system with code signaling - Google Patents
Radio broadcasting system with code signalingInfo
- Publication number
- ES467246A1 ES467246A1 ES467246A ES467246A ES467246A1 ES 467246 A1 ES467246 A1 ES 467246A1 ES 467246 A ES467246 A ES 467246A ES 467246 A ES467246 A ES 467246A ES 467246 A1 ES467246 A1 ES 467246A1
- Authority
- ES
- Spain
- Prior art keywords
- signal
- frequency
- stereo
- modulated
- code
- 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.)
- Expired
Links
Classifications
-
- G—PHYSICS
- G08—SIGNALLING
- G08G—TRAFFIC CONTROL SYSTEMS
- G08G1/00—Traffic control systems for road vehicles
- G08G1/09—Arrangements for giving variable traffic instructions
- G08G1/091—Traffic information broadcasting
- G08G1/092—Coding or decoding of the information
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04H—BROADCAST COMMUNICATION
- H04H20/00—Arrangements for broadcast or for distribution combined with broadcast
- H04H20/28—Arrangements for simultaneous broadcast of plural pieces of information
- H04H20/33—Arrangements for simultaneous broadcast of plural pieces of information by plural channels
- H04H20/34—Arrangements for simultaneous broadcast of plural pieces of information by plural channels using an out-of-band subcarrier signal
Abstract
In the broadcasting system with code signalling, a multiplex signal is frequency modulated onto a main carrier by the transmitter. A sound-frequency information signal (9), a stereo information signal (13) which is modulated (11) onto a suppressed stereo auxiliary carrier (16, 17), a stereo pilot signal (15) with a frequency between the frequency spectra of the sound-frequency information signal and the modulated stereo information signal, and a binary code signal (23) are fed to the multiplexer (10). The code signal is modulated (20) onto an auxiliary carrier (18, 19) which lies outside the named frequency spectra, and the auxiliary carrier (18, 19) is a harmonic of a subharmonic of the stereo pilot signal and is derived from the same frequency source (14) as the stereo pilot signal. An unmodulated wave, which is necessary for detection of the code signal, is derived from the received stereo pilot signal by the receiver. In this way, perfect decoding of the code signal in the receiver is made possible with low receiving aerial voltages and without high-quality filters.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| NL7702019A NL7702019A (en) | 1977-02-25 | 1977-02-25 | RADIO BROADCASTING SYSTEM WITH TRANSMITTER CHARACTERIZATION. |
| NL7709619A NL7709619A (en) | 1977-09-01 | 1977-09-01 | RADIO BROADCASTING SYSTEM WITH CODE SIGNALING. |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| ES467246A1 true ES467246A1 (en) | 1978-11-16 |
Family
ID=26645294
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| ES467246A Expired ES467246A1 (en) | 1977-02-25 | 1978-02-23 | Radio broadcasting system with code signaling |
Country Status (19)
| Country | Link |
|---|---|
| JP (1) | JPS6033014B2 (en) |
| AR (1) | AR216939A1 (en) |
| AT (1) | AT375511B (en) |
| BE (1) | BE864272A (en) |
| BR (1) | BR7801160A (en) |
| CA (1) | CA1116241A (en) |
| CH (1) | CH627597A5 (en) |
| DE (1) | DE2807706C2 (en) |
| DK (1) | DK79978A (en) |
| ES (1) | ES467246A1 (en) |
| FI (1) | FI780597A (en) |
| FR (1) | FR2382135A1 (en) |
| GB (1) | GB1579985A (en) |
| HK (1) | HK22881A (en) |
| IT (1) | IT1156903B (en) |
| MX (1) | MX147105A (en) |
| NL (1) | NL7800581A (en) |
| NZ (1) | NZ186531A (en) |
| SE (1) | SE429704B (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| NL8000607A (en) * | 1980-01-31 | 1981-09-01 | Philips Nv | FM RECEIVER WITH TRANSMITTER CHARACTERIZATION. |
| US4388493A (en) * | 1980-11-28 | 1983-06-14 | Maisel Douglas A | In-band signaling system for FM transmission systems |
| NL8100419A (en) * | 1981-01-29 | 1982-08-16 | Philips Nv | FM BROADCASTING SYSTEM WITH TRANSMITTER CHARACTERIZATION. |
| NL8200560A (en) * | 1982-02-15 | 1983-09-01 | Philips Nv | SYSTEM FOR COMMUNICATION BY RE-MESSAGES TRANSMITTED MESSAGES AND STATIONS FOR USE IN SUCH A SYSTEM. |
| DE3536820A1 (en) * | 1985-10-16 | 1987-04-16 | Bosch Gmbh Robert | Traffic program decoder |
| JPH07114390B2 (en) * | 1986-10-29 | 1995-12-06 | 日本放送協会 | Subcarrier reproduction system |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR1529069A (en) * | 1966-06-18 | 1968-06-14 | Philips Nv | A radio transmission system for stereophonic signals, as well as transmitters and receivers to be used in this system |
| DE2051034C3 (en) * | 1970-10-17 | 1978-11-02 | Hessischer Rundfunk, 6000 Frankfurt | VHF radio stereophonic transmission system |
-
1978
- 1978-01-18 NL NL7800581A patent/NL7800581A/en not_active Application Discontinuation
- 1978-02-22 GB GB7038/78A patent/GB1579985A/en not_active Expired
- 1978-02-22 NZ NZ186531A patent/NZ186531A/en unknown
- 1978-02-22 FI FI780597A patent/FI780597A/en not_active Application Discontinuation
- 1978-02-22 SE SE7802031A patent/SE429704B/en unknown
- 1978-02-22 DK DK79978A patent/DK79978A/en not_active Application Discontinuation
- 1978-02-22 CH CH194878A patent/CH627597A5/en not_active IP Right Cessation
- 1978-02-22 MX MX172521A patent/MX147105A/en unknown
- 1978-02-23 IT IT67376/78A patent/IT1156903B/en active
- 1978-02-23 ES ES467246A patent/ES467246A1/en not_active Expired
- 1978-02-23 DE DE2807706A patent/DE2807706C2/en not_active Expired
- 1978-02-23 BE BE185440A patent/BE864272A/en not_active IP Right Cessation
- 1978-02-23 AR AR271200A patent/AR216939A1/en active
- 1978-02-24 BR BR7801160A patent/BR7801160A/en unknown
- 1978-02-24 FR FR7805364A patent/FR2382135A1/en not_active Withdrawn
- 1978-02-24 AT AT0134578A patent/AT375511B/en not_active IP Right Cessation
- 1978-02-25 JP JP53020419A patent/JPS6033014B2/en not_active Expired
- 1978-02-27 CA CA297,759A patent/CA1116241A/en not_active Expired
-
1981
- 1981-05-28 HK HK228/81A patent/HK22881A/en unknown
Also Published As
| Publication number | Publication date |
|---|---|
| NL7800581A (en) | 1978-08-29 |
| IT7867376A0 (en) | 1978-02-23 |
| FI780597A (en) | 1978-08-26 |
| DK79978A (en) | 1978-08-26 |
| MX147105A (en) | 1982-10-06 |
| CA1116241A (en) | 1982-01-12 |
| BR7801160A (en) | 1978-12-05 |
| CH627597A5 (en) | 1982-01-15 |
| GB1579985A (en) | 1980-11-26 |
| SE429704B (en) | 1983-09-19 |
| DE2807706A1 (en) | 1978-08-31 |
| ATA134578A (en) | 1983-12-15 |
| BE864272A (en) | 1978-08-23 |
| AR216939A1 (en) | 1980-02-15 |
| FR2382135A1 (en) | 1978-09-22 |
| DE2807706C2 (en) | 1985-02-14 |
| SE7802031L (en) | 1978-08-26 |
| NZ186531A (en) | 1981-12-15 |
| JPS53114301A (en) | 1978-10-05 |
| JPS6033014B2 (en) | 1985-07-31 |
| AT375511B (en) | 1984-08-10 |
| IT1156903B (en) | 1987-02-04 |
| HK22881A (en) | 1981-06-05 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| FD1A | Patent lapsed |
Effective date: 19981103 |