CA1111531A - Digital signalling receiver for receiving pcm tones - Google Patents
Digital signalling receiver for receiving pcm tonesInfo
- Publication number
- CA1111531A CA1111531A CA322,112A CA322112A CA1111531A CA 1111531 A CA1111531 A CA 1111531A CA 322112 A CA322112 A CA 322112A CA 1111531 A CA1111531 A CA 1111531A
- Authority
- CA
- Canada
- Prior art keywords
- signals
- signal
- signalling
- filter
- pcm
- 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 claims abstract description 101
- 230000006870 function Effects 0.000 claims abstract description 51
- 230000015654 memory Effects 0.000 claims description 18
- 238000000034 method Methods 0.000 claims description 10
- 238000001914 filtration Methods 0.000 claims description 9
- 238000012545 processing Methods 0.000 claims description 9
- 230000004044 response Effects 0.000 claims description 7
- 230000008569 process Effects 0.000 claims description 5
- 230000001360 synchronised effect Effects 0.000 claims description 5
- 230000003252 repetitive effect Effects 0.000 claims description 3
- 238000010586 diagram Methods 0.000 description 5
- 238000013519 translation Methods 0.000 description 5
- 230000000295 complement effect Effects 0.000 description 3
- 238000013461 design Methods 0.000 description 3
- 230000010354 integration Effects 0.000 description 3
- 238000012360 testing method Methods 0.000 description 3
- 238000009825 accumulation Methods 0.000 description 2
- 230000003111 delayed effect Effects 0.000 description 2
- 230000003595 spectral effect Effects 0.000 description 2
- 239000004255 Butylated hydroxyanisole Substances 0.000 description 1
- 239000004233 Indanthrene blue RS Substances 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 239000011668 ascorbic acid Substances 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000002860 competitive effect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000000977 initiatory effect Effects 0.000 description 1
- LWIHDJKSTIGBAC-UHFFFAOYSA-K potassium phosphate Substances [K+].[K+].[K+].[O-]P([O-])([O-])=O LWIHDJKSTIGBAC-UHFFFAOYSA-K 0.000 description 1
- 230000002250 progressing effect Effects 0.000 description 1
- 239000000473 propyl gallate Substances 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- LPXPTNMVRIOKMN-UHFFFAOYSA-M sodium nitrite Substances [Na+].[O-]N=O LPXPTNMVRIOKMN-UHFFFAOYSA-M 0.000 description 1
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
- H04Q1/4575—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 which are transmitted in digital form
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Time-Division Multiplex Systems (AREA)
- Interface Circuits In Exchanges (AREA)
- Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
- Electrophonic Musical Instruments (AREA)
- Use Of Switch Circuits For Exchanges And Methods Of Control Of Multiplex Exchanges (AREA)
- Mobile Radio Communication Systems (AREA)
Priority Applications (9)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA322,112A CA1111531A (en) | 1979-02-22 | 1979-02-22 | Digital signalling receiver for receiving pcm tones |
| GB8004800A GB2044039B (en) | 1979-02-22 | 1980-02-13 | Digital signalling receiver for receiving pcm tones |
| DE19803005740 DE3005740A1 (de) | 1979-02-22 | 1980-02-15 | Digital-signalisierungsempfaenger fuer pcm-toene |
| IT19986/80A IT1140634B (it) | 1979-02-22 | 1980-02-18 | Ricevitore digitale di chiamata,per la ricezione di tono segnali modulati impulsivamente in codice |
| SE8001315A SE452388B (sv) | 1979-02-22 | 1980-02-19 | Signalleringsmottagare och sett for mottagande av pulskodmodulerade, pcm, tonsignaler |
| FR8003681A FR2450017A1 (fr) | 1979-02-22 | 1980-02-20 | Recepteur pour signalisation numerique destine a la reception de sons modules par impulsions codees (mic) |
| NL8001026A NL8001026A (nl) | 1979-02-22 | 1980-02-20 | Digitale signaalontvanger voor het ontvangen van pcm tonen. |
| AT0096280A AT386312B (de) | 1979-02-22 | 1980-02-21 | Signalisierungsempfaenger zum empfang pulscodemodulierter signale und verfahren zum betrieb des signalisierungsempfaengers |
| JP2152180A JPS55137788A (en) | 1979-02-22 | 1980-02-22 | Digital signal receiver for receiving pcm voice |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA322,112A CA1111531A (en) | 1979-02-22 | 1979-02-22 | Digital signalling receiver for receiving pcm tones |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1111531A true CA1111531A (en) | 1981-10-27 |
Family
ID=4113607
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA322,112A Expired CA1111531A (en) | 1979-02-22 | 1979-02-22 | Digital signalling receiver for receiving pcm tones |
Country Status (9)
| Country | Link |
|---|---|
| JP (1) | JPS55137788A (enrdf_load_stackoverflow) |
| AT (1) | AT386312B (enrdf_load_stackoverflow) |
| CA (1) | CA1111531A (enrdf_load_stackoverflow) |
| DE (1) | DE3005740A1 (enrdf_load_stackoverflow) |
| FR (1) | FR2450017A1 (enrdf_load_stackoverflow) |
| GB (1) | GB2044039B (enrdf_load_stackoverflow) |
| IT (1) | IT1140634B (enrdf_load_stackoverflow) |
| NL (1) | NL8001026A (enrdf_load_stackoverflow) |
| SE (1) | SE452388B (enrdf_load_stackoverflow) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5779751A (en) * | 1980-11-05 | 1982-05-19 | Nec Corp | Signal receiver |
| FR2504754A1 (fr) * | 1981-04-27 | 1982-10-29 | Thomson Csf Mat Tel | Dispositif sequenceur a memoires mortes |
| US4519072A (en) * | 1982-11-10 | 1985-05-21 | Rockwell International Corporation | Answer supervision system |
| JPH07171782A (ja) * | 1991-07-16 | 1995-07-11 | Haruo Konagai | 真空吸着装置 |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR1603175A (enrdf_load_stackoverflow) * | 1968-07-30 | 1971-03-22 | ||
| US3863030A (en) * | 1972-06-01 | 1975-01-28 | Gte Automatic Electric Lab Inc | Pcm tone receiver using digital spectrum analysis |
| JPS51112218A (en) * | 1975-03-28 | 1976-10-04 | Hitachi Ltd | Multifrequency signal receiver |
| JPS5918916B2 (ja) * | 1975-10-06 | 1984-05-01 | 株式会社日立製作所 | 多周波信号受信器 |
| IT1072242B (it) * | 1976-12-17 | 1985-04-10 | Cselt Centro Studi Lab Telecom | Procedimento e dispositivo per il riconoscimento di segnali telefonici in codice multifrequenza convertiti in forma numerica |
-
1979
- 1979-02-22 CA CA322,112A patent/CA1111531A/en not_active Expired
-
1980
- 1980-02-13 GB GB8004800A patent/GB2044039B/en not_active Expired
- 1980-02-15 DE DE19803005740 patent/DE3005740A1/de not_active Withdrawn
- 1980-02-18 IT IT19986/80A patent/IT1140634B/it active
- 1980-02-19 SE SE8001315A patent/SE452388B/sv not_active IP Right Cessation
- 1980-02-20 FR FR8003681A patent/FR2450017A1/fr active Granted
- 1980-02-20 NL NL8001026A patent/NL8001026A/nl not_active Application Discontinuation
- 1980-02-21 AT AT0096280A patent/AT386312B/de not_active IP Right Cessation
- 1980-02-22 JP JP2152180A patent/JPS55137788A/ja active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| JPS55137788A (en) | 1980-10-27 |
| FR2450017B1 (enrdf_load_stackoverflow) | 1984-05-11 |
| GB2044039B (en) | 1983-05-11 |
| AT386312B (de) | 1988-08-10 |
| ATA96280A (de) | 1987-12-15 |
| GB2044039A (en) | 1980-10-08 |
| IT1140634B (it) | 1986-10-01 |
| IT8019986A0 (it) | 1980-02-18 |
| IT8019986A1 (it) | 1981-08-18 |
| SE452388B (sv) | 1987-11-23 |
| FR2450017A1 (fr) | 1980-09-19 |
| DE3005740A1 (de) | 1980-09-04 |
| SE8001315L (sv) | 1980-08-23 |
| NL8001026A (nl) | 1980-08-26 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MKEX | Expiry |