ES8406818A1 - Procedimiento para la transmision digital fonica a traves de un canal unico de radiocomunicacion - Google Patents
Procedimiento para la transmision digital fonica a traves de un canal unico de radiocomunicacionInfo
- Publication number
- ES8406818A1 ES8406818A1 ES528863A ES528863A ES8406818A1 ES 8406818 A1 ES8406818 A1 ES 8406818A1 ES 528863 A ES528863 A ES 528863A ES 528863 A ES528863 A ES 528863A ES 8406818 A1 ES8406818 A1 ES 8406818A1
- Authority
- ES
- Spain
- Prior art keywords
- speech
- radio set
- comparator
- sending
- amplitude
- 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
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/38—Transceivers, i.e. devices in which transmitter and receiver form a structural unit and in which at least one part is used for functions of transmitting and receiving
- H04B1/40—Circuits
- H04B1/54—Circuits using the same frequency for two directions of communication
- H04B1/56—Circuits using the same frequency for two directions of communication with provision for simultaneous communication in two directions
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/38—Transceivers, i.e. devices in which transmitter and receiver form a structural unit and in which at least one part is used for functions of transmitting and receiving
- H04B1/40—Circuits
- H04B1/44—Transmit/receive switching
- H04B1/46—Transmit/receive switching by voice-frequency signals; by pilot signals
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Bidirectional Digital Transmission (AREA)
- Mobile Radio Communication Systems (AREA)
- Transmitters (AREA)
- Transceivers (AREA)
Abstract
PROCEDIMIENTO PARA LA TRANSMISION DIGITAL FONICA A TRAVES DE UN CANAL UNICO DE RADIOCOMUNICACION.SE CARACTERIZA POR: A) EN LOS APARATOS DE RADIOCOMUNICACION SIEMPRE ESTA CONECTADO DE MODO PASANTE EL TREN DE EMISION O RECEPCION; B) EN AMBOS APARATOS DE RADIOCOMUNICACION, PARALELAMENTE A LA CONVERSION DE LA FONIA, EN UNA CORRIENTE DE BIT, SE DETERMINA LA PROPIA AMPLITUD FONICA Y PRIMERAMENTE SE DIGITALIZA Y, POR OTRA PARTE, SE APORTA A UN COMPARADOR; C) EN EL APARATO DE RADIOCOMUNICACION, QUE EMITE, SE INSERTA PERIODICAMENTE LA AMPLITUD FONICA DIGITALIZADAEN LA CORRIENTE DE BIT, QUE DEBE EMITIRSE, SE EXTRAE POR OBTURACION EN EL APARATO DE RADIOCOMUNICACION RECEPTOR, SE CONVIERTE Y SE APORTA AL COMPARADOR; CUANDO LA AMPLITUD FONICA, RECIBIDA EN EL COMPARADOR, ES MAS BAJA QUE LA AMPLITUD FONICA PROPIA DEL APARATO DE RADIOCOMUNICACION, QUE ESTA RECIBIENDO, ENTONCES SE CONMUTA LA DIRECCION DE FONIA; D) EN EL APARATO DE RADIOCOMUNICACION, QUE ESTA RECIBIENDO, SE CORRE POR UN INTERVALO DE TIEMPO ADECUADO, CONECTANDOSE CON LA MISMA PERIODICIDAD DURANTE BREVE TIEMPO, LA EMISORA, Y SE EMITIRA LA AMPLITUD FONICA DIGITALIZADA.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19833301351 DE3301351A1 (de) | 1983-01-18 | 1983-01-18 | Verfahren zur digitalen sprachuebertragung ueber einen einzigen funkkanal |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| ES528863A0 ES528863A0 (es) | 1984-08-16 |
| ES8406818A1 true ES8406818A1 (es) | 1984-08-16 |
Family
ID=6188454
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| ES528863A Expired ES8406818A1 (es) | 1983-01-18 | 1984-01-13 | Procedimiento para la transmision digital fonica a traves de un canal unico de radiocomunicacion |
Country Status (4)
| Country | Link |
|---|---|
| EP (1) | EP0115618B1 (es) |
| AT (1) | ATE27391T1 (es) |
| DE (2) | DE3301351A1 (es) |
| ES (1) | ES8406818A1 (es) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2151436A (en) * | 1983-12-09 | 1985-07-17 | Philips Electronic Associated | Duplex speech transmission method and a system therefor |
| GB8418935D0 (en) * | 1984-07-25 | 1984-08-30 | Racal Res Ltd | Duplex communications |
| US4754450A (en) * | 1986-03-25 | 1988-06-28 | Motorola, Inc. | TDM communication system for efficient spectrum utilization |
| JPS63502867A (ja) * | 1986-03-25 | 1988-10-20 | モトローラ・インコーポレーテツド | 時分割多重通信システムにおいて使用される送受信装置 |
| US4903257A (en) * | 1987-05-27 | 1990-02-20 | Fujitsu Limited | Digital two-way radio-communication system using single frequency |
| DE59408006D1 (de) * | 1994-01-08 | 1999-04-29 | Nestle Sa | Verfahren zur Herstellung eines sterilen Milchbreiprodukts |
| EP1662870A1 (en) | 2003-08-22 | 2006-06-07 | Danisco A/S | Encapsulated antimicrobial material |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1766215A1 (de) * | 1968-04-20 | 1971-06-09 | Tekade Felten & Guilleaume | Verfahren zur Nachrichtenuebermittlung im Wechselsprechverkehr zwischen einer an das Fernsprechnetz anschaltbaren Hauptstation und einer meist ortsbeweglichen Unterstation ueber eine Simplex-Funkstrecke |
| DE2338846C3 (de) * | 1973-07-31 | 1979-03-15 | Standard Elektrik Lorenz Ag, 7000 Stuttgart | Sprachübertragungssystem mit einem Übertragungskanal, bei dem die Verständigung zwischen zwei Teilnehmern in beiden Richtungen möglich ist |
| DE2340136C1 (de) * | 1973-08-08 | 1978-04-27 | Siemens Ag | Funkuebertragungssystem |
| US3942116A (en) * | 1975-03-13 | 1976-03-02 | California Microwave, Inc. | Transceiver having improved voice actuated carrier and echo suppression circuit |
| FR2454231A1 (fr) * | 1979-04-13 | 1980-11-07 | Thomson Csf | Emetteur-recepteur a commande automatique d'alternat et reseau de telecommunications comportant un tel emetteur-recepteur |
-
1983
- 1983-01-18 DE DE19833301351 patent/DE3301351A1/de not_active Withdrawn
- 1983-12-22 DE DE8383112939T patent/DE3371730D1/de not_active Expired
- 1983-12-22 EP EP83112939A patent/EP0115618B1/de not_active Expired
- 1983-12-22 AT AT83112939T patent/ATE27391T1/de active
-
1984
- 1984-01-13 ES ES528863A patent/ES8406818A1/es not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| ES528863A0 (es) | 1984-08-16 |
| ATE27391T1 (de) | 1987-06-15 |
| EP0115618A1 (de) | 1984-08-15 |
| EP0115618B1 (de) | 1987-05-20 |
| DE3371730D1 (en) | 1987-06-25 |
| DE3301351A1 (de) | 1984-07-19 |
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