AU1290076A - Frequency selective signal receiver - Google Patents
Frequency selective signal receiverInfo
- Publication number
- AU1290076A AU1290076A AU12900/76A AU1290076A AU1290076A AU 1290076 A AU1290076 A AU 1290076A AU 12900/76 A AU12900/76 A AU 12900/76A AU 1290076 A AU1290076 A AU 1290076A AU 1290076 A AU1290076 A AU 1290076A
- Authority
- AU
- Australia
- Prior art keywords
- signal receiver
- frequency selective
- selective signal
- frequency
- receiver
- 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
- 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
- H04Q1/457—Signalling arrangements; Manipulation of signalling currents using alternate current with voice-band signalling frequencies using multi-frequency signalling with conversion of multifrequency signals into digital signals
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
- Synchronisation In Digital Transmission Systems (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19752515769 DE2515769A1 (en) | 1975-04-10 | 1975-04-10 | FREQUENCY SELECTIVE SIGNAL RECEIVER |
Publications (1)
Publication Number | Publication Date |
---|---|
AU1290076A true AU1290076A (en) | 1977-10-20 |
Family
ID=5943564
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
AU12900/76A Expired AU1290076A (en) | 1975-04-10 | 1976-04-12 | Frequency selective signal receiver |
Country Status (5)
Country | Link |
---|---|
AU (1) | AU1290076A (en) |
BE (1) | BE841906R (en) |
DE (1) | DE2515769A1 (en) |
FR (1) | FR2307402A1 (en) |
GB (1) | GB1518006A (en) |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
NL7511707A (en) * | 1975-10-06 | 1977-04-12 | Philips Nv | CROSS-CORRELATION DEVICE. |
IT1072242B (en) * | 1976-12-17 | 1985-04-10 | Cselt Centro Studi Lab Telecom | PROCEDURE AND DEVICE FOR THE RECOGNITION OF TELEPHONE SIGNALS IN MULTIFREQUENCY CODE CONVERTED IN NUMERICAL FORM |
GB2032737A (en) * | 1978-10-24 | 1980-05-08 | Standard Telephones Cables Ltd | Radio receiver for tone modulated signals |
FR2451691A1 (en) * | 1979-03-16 | 1980-10-10 | Thomson Csf | FREQUENCY COMPARATOR CIRCUIT AND SELECTIVE CALLING DEVICE COMPRISING SUCH A CIRCUIT |
US4783845A (en) * | 1985-12-20 | 1988-11-08 | Itt Aerospace Optical | Digital tone squelch detector |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2422839A1 (en) * | 1974-05-10 | 1975-12-11 | Standard Elektrik Lorenz Ag | FREQUENCY SELECTIVE SIGNAL RECEIVER |
-
1975
- 1975-04-10 DE DE19752515769 patent/DE2515769A1/en not_active Withdrawn
-
1976
- 1976-04-06 GB GB1386576A patent/GB1518006A/en not_active Expired
- 1976-04-09 FR FR7610448A patent/FR2307402A1/en not_active Withdrawn
- 1976-04-12 AU AU12900/76A patent/AU1290076A/en not_active Expired
- 1976-05-17 BE BE2055032A patent/BE841906R/en active
Also Published As
Publication number | Publication date |
---|---|
GB1518006A (en) | 1978-07-19 |
BE841906R (en) | 1976-11-17 |
FR2307402A1 (en) | 1976-11-05 |
DE2515769A1 (en) | 1976-10-21 |
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