FR2502439B1 - - Google Patents
Info
- Publication number
- FR2502439B1 FR2502439B1 FR8204254A FR8204254A FR2502439B1 FR 2502439 B1 FR2502439 B1 FR 2502439B1 FR 8204254 A FR8204254 A FR 8204254A FR 8204254 A FR8204254 A FR 8204254A FR 2502439 B1 FR2502439 B1 FR 2502439B1
- Authority
- FR
- France
- 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
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W88/00—Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
- H04W88/02—Terminal devices
- H04W88/022—Selective call receivers
- H04W88/025—Selective call decoders
- H04W88/027—Selective call decoders using frequency address codes
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Mobile Radio Communication Systems (AREA)
- Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB8108450A GB2095013B (en) | 1981-03-18 | 1981-03-18 | Multi-tone sequential call signal detector |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| FR2502439A1 FR2502439A1 (fr) | 1982-09-24 |
| FR2502439B1 true FR2502439B1 (USRE038476-20040330-M00035.png) | 1984-11-16 |
Family
ID=10520468
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FR8204254A Granted FR2502439A1 (fr) | 1981-03-18 | 1982-03-12 | Systeme de detection de tonalites |
Country Status (6)
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4580281A (en) * | 1984-10-15 | 1986-04-01 | Tektronix, Inc. | Self-arming, prescaling frequency counter system |
| US4928100A (en) * | 1987-10-20 | 1990-05-22 | Telefind Corporation | Paging receiver for receiving pages from analog or digital paging transmitters |
| DE4038291A1 (de) * | 1990-11-29 | 1992-06-04 | Funkwerk Koepenick Gmbh I A | Anordnung fuer die auswertung von selektivrufen |
| US6072869A (en) * | 1997-12-22 | 2000-06-06 | Nortel Networks Corporation | Adaptive method and apparatus for detecting a stutter dial tone signal |
Family Cites Families (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2992384A (en) * | 1959-07-06 | 1961-07-11 | Thompson Ramo Wooldridge Inc | Frequency counter |
| US3518539A (en) * | 1967-06-26 | 1970-06-30 | Japan Atomic Energy Res Inst | Time analyzers for counting-rate change measurement |
| DE2220878C3 (de) * | 1972-04-28 | 1982-04-22 | Philips Patentverwaltung Gmbh, 2000 Hamburg | Schaltungsanordnung zur digitalen Frequenzmessung |
| SE379862B (USRE038476-20040330-M00035.png) * | 1974-02-07 | 1975-10-20 | Asea Ab | |
| US3990007A (en) * | 1975-03-31 | 1976-11-02 | Gte Automatic Electric Laboratories Incorporated | Programmable frequency detector |
| JPS5221758A (en) * | 1975-08-11 | 1977-02-18 | Sanyo Electric Co Ltd | Fs signal demodulation circuit |
| US4061885A (en) * | 1975-12-17 | 1977-12-06 | Motorola, Inc. | Digital tone decoder |
| US4142177A (en) * | 1976-08-12 | 1979-02-27 | Motorola, Inc. | Digital tone decoder system |
| NL7809383A (nl) * | 1977-09-16 | 1979-03-20 | Hitachi Ltd | Ontvangstelsel voor multifrequentiesignalen. |
| US4354252A (en) * | 1977-09-27 | 1982-10-12 | Motorola, Inc. | Programmable digital data terminal for mobile radio transceivers |
| JPS5537027A (en) * | 1978-09-08 | 1980-03-14 | Hitachi Ltd | Frequency discriminating circuit |
| NL177169B (nl) * | 1978-09-08 | 1985-03-01 | Nederlanden Staat | Inrichting om de aanwezigheid vast te stellen van een of meer van een aantal frequenties in pulscode-gemoduleerde signalen. |
| JPS5698660A (en) * | 1980-01-09 | 1981-08-08 | Advantest Corp | Frequency measuring device |
| US4363100A (en) * | 1980-10-28 | 1982-12-07 | Northern Telecom Limited | Detection of tones in sampled signals |
-
1981
- 1981-03-18 GB GB8108450A patent/GB2095013B/en not_active Expired
-
1982
- 1982-03-08 US US06/355,635 patent/US4539646A/en not_active Expired - Fee Related
- 1982-03-12 FR FR8204254A patent/FR2502439A1/fr active Granted
- 1982-03-15 JP JP57039602A patent/JPS57197948A/ja active Pending
- 1982-03-15 AU AU81524/82A patent/AU547099B2/en not_active Ceased
- 1982-03-15 DE DE3209382A patent/DE3209382C2/de not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| GB2095013A (en) | 1982-09-22 |
| GB2095013B (en) | 1984-10-17 |
| FR2502439A1 (fr) | 1982-09-24 |
| AU547099B2 (en) | 1985-10-03 |
| JPS57197948A (en) | 1982-12-04 |
| DE3209382C2 (de) | 1987-04-02 |
| DE3209382A1 (de) | 1982-11-18 |
| AU8152482A (en) | 1982-09-23 |
| US4539646A (en) | 1985-09-03 |
Similar Documents
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| ST | Notification of lapse |