ES386797A1 - Tone signalling apparatus - Google Patents
Tone signalling apparatusInfo
- Publication number
- ES386797A1 ES386797A1 ES386797A ES386797A ES386797A1 ES 386797 A1 ES386797 A1 ES 386797A1 ES 386797 A ES386797 A ES 386797A ES 386797 A ES386797 A ES 386797A ES 386797 A1 ES386797 A1 ES 386797A1
- Authority
- ES
- Spain
- Prior art keywords
- hum
- sequence
- station
- hums
- generators
- 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
- 230000011664 signaling Effects 0.000 title 1
- 230000008054 signal transmission Effects 0.000 abstract 1
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W88/00—Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
- H04W88/18—Service support devices; Network management devices
- H04W88/185—Selective call encoders for paging networks, e.g. paging centre devices
- H04W88/188—Selective call encoders for paging networks, e.g. paging centre devices using frequency address codes
-
- G—PHYSICS
- G08—SIGNALLING
- G08C—TRANSMISSION SYSTEMS FOR MEASURED VALUES, CONTROL OR SIMILAR SIGNALS
- G08C19/00—Electric signal transmission systems
- G08C19/12—Electric signal transmission systems in which the signal transmitted is frequency or phase of AC
- G08C19/14—Electric signal transmission systems in which the signal transmitted is frequency or phase of AC using combination of fixed frequencies
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L27/00—Modulated-carrier systems
- H04L27/26—Systems using multi-frequency codes
- H04L27/30—Systems using multi-frequency codes wherein each code element is represented by a combination of frequencies
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04Q—SELECTING
- H04Q1/00—Details of selecting apparatus or arrangements
- H04Q1/18—Electrical details
- H04Q1/30—Signalling arrangements; Manipulation of signalling currents
- H04Q1/44—Signalling arrangements; Manipulation of signalling currents using alternate current
- H04Q1/444—Signalling arrangements; Manipulation of signalling currents using alternate current with voice-band signalling frequencies
- H04Q1/45—Signalling arrangements; Manipulation of signalling currents using alternate current with voice-band signalling frequencies using multi-frequency signalling
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Mobile Radio Communication Systems (AREA)
- Filters And Equalizers (AREA)
- Selective Calling Equipment (AREA)
Abstract
Refinements in hum frequency current signal transmission systems of the hum type comprising a transmitter station providing a sequence of hum signals and a receiver station comprising means for detecting the hum signal, characterized in that, in At the transmitting station there are a plurality of hum generators each operating at a separate frequency and means operating to effect sequential timed operation of said hum generators to provide a sequence of hum or vibrating current signals of uniform frequency and by that at the receiving station there are a plurality of hum detectors for detecting such hums, whose hum detectors are activated in sequence to react to a chosen sequence of received hums and means that operate to provide a signal indicative of receipt of a full sequence of himself ñales. (Machine-translation by Google Translate, not legally binding)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US887971A US3649770A (en) | 1969-12-24 | Tone signaling system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| ES386797A1 true ES386797A1 (en) | 1973-04-01 |
Family
ID=25392253
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| ES386797A Expired ES386797A1 (en) | 1969-12-24 | 1970-12-23 | Tone signalling apparatus |
Country Status (8)
| Country | Link |
|---|---|
| BE (1) | BE760766A (en) |
| CA (1) | CA928818A (en) |
| DE (1) | DE2062957A1 (en) |
| ES (1) | ES386797A1 (en) |
| FR (1) | FR2072054B1 (en) |
| GB (1) | GB1328665A (en) |
| NL (1) | NL7018746A (en) |
| ZA (1) | ZA708418B (en) |
-
1970
- 1970-11-27 CA CA099350A patent/CA928818A/en not_active Expired
- 1970-12-14 ZA ZA708418A patent/ZA708418B/en unknown
- 1970-12-21 DE DE19702062957 patent/DE2062957A1/en active Pending
- 1970-12-22 GB GB6086870A patent/GB1328665A/en not_active Expired
- 1970-12-23 FR FR707046459A patent/FR2072054B1/fr not_active Expired
- 1970-12-23 ES ES386797A patent/ES386797A1/en not_active Expired
- 1970-12-23 NL NL7018746A patent/NL7018746A/xx unknown
- 1970-12-23 BE BE760766A patent/BE760766A/en unknown
Also Published As
| Publication number | Publication date |
|---|---|
| GB1328665A (en) | 1973-08-30 |
| FR2072054A1 (en) | 1971-09-24 |
| CA928818A (en) | 1973-06-19 |
| DE2062957A1 (en) | 1971-07-08 |
| BE760766A (en) | 1971-05-27 |
| ZA708418B (en) | 1972-07-26 |
| NL7018746A (en) | 1971-06-28 |
| FR2072054B1 (en) | 1973-02-02 |
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