AU474076B2 - Tone detector - Google Patents

Tone detector

Info

Publication number
AU474076B2
AU474076B2 AU61856/73A AU6185673A AU474076B2 AU 474076 B2 AU474076 B2 AU 474076B2 AU 61856/73 A AU61856/73 A AU 61856/73A AU 6185673 A AU6185673 A AU 6185673A AU 474076 B2 AU474076 B2 AU 474076B2
Authority
AU
Australia
Prior art keywords
tone detector
tone
detector
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
Application number
AU61856/73A
Other languages
English (en)
Other versions
AU6185673A (en
Inventor
BRUNO WIECZOREK and RONALD EUGENE POCRAIN ALFRED
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Motorola Solutions Inc
Original Assignee
Motorola Inc
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Motorola Inc filed Critical Motorola Inc
Publication of AU6185673A publication Critical patent/AU6185673A/en
Application granted granted Critical
Publication of AU474076B2 publication Critical patent/AU474076B2/en
Expired legal-status Critical Current

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
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H11/00—Networks using active elements
    • H03H11/02—Multiple-port networks
    • H03H11/04—Frequency selective two-port networks
    • H03H11/12—Frequency selective two-port networks using amplifiers with feedback
    • H03H11/1217—Frequency selective two-port networks using amplifiers with feedback using a plurality of operational amplifiers
    • H03H11/1252—Two integrator-loop-filters
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Networks Using Active Elements (AREA)
  • Noise Elimination (AREA)
  • Mobile Radio Communication Systems (AREA)
AU61856/73A 1972-11-07 1973-10-26 Tone detector Expired AU474076B2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US00304440A US3803429A (en) 1972-11-07 1972-11-07 Switchable frequency tone filter and detector with high speed switching capability
USUS304,440 1972-11-07

Publications (2)

Publication Number Publication Date
AU6185673A AU6185673A (en) 1975-05-01
AU474076B2 true AU474076B2 (en) 1976-07-15

Family

ID=23176520

Family Applications (1)

Application Number Title Priority Date Filing Date
AU61856/73A Expired AU474076B2 (en) 1972-11-07 1973-10-26 Tone detector

Country Status (12)

Country Link
US (1) US3803429A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
JP (1) JPS5330561B2 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
AR (1) AR201118A1 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
AU (1) AU474076B2 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
BR (1) BR7308706D0 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
CA (1) CA985753A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
DE (1) DE2355700C3 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
FR (1) FR2205779B1 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
GB (1) GB1412897A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
HK (1) HK65176A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
IL (1) IL43528A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
ZA (1) ZA738270B (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU626692B2 (en) * 1989-07-12 1992-08-06 Texas Instruments Deutschland Gmbh Electrical element trimming circuit

Families Citing this family (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS50135962A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) * 1974-04-16 1975-10-28
US4019142A (en) * 1974-08-16 1977-04-19 Wycoff Keith H Selectively callable receiver operated in accordance with tone characteristics
JPS5146235U (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) * 1974-10-04 1976-04-05
JPS587094B2 (ja) * 1975-03-18 1983-02-08 日本電気株式会社 ムセンコベツコシユツホウシキ
AT343213B (de) * 1975-04-08 1978-05-10 Funktechnisches Labor Ernst F Schaltungsanordnung fur einen empfanger fur impulsfolgen
JPS5366309A (en) * 1976-11-26 1978-06-13 Nec Corp Digital type tone signal detector
GB1562121A (en) * 1976-11-26 1980-03-05 Nippon Electric Co Tone signal detecting circuits
US4145656A (en) * 1977-04-27 1979-03-20 Texas Instruments Incorporated Transceiver capable of sensing a clear channel
US4419765A (en) * 1979-10-12 1983-12-06 Keith H. Wycoff Signal absence detector
US4578533A (en) * 1980-11-03 1986-03-25 Universal Data Systems, Inc. Switchable line powered modem
JPS57131991A (en) * 1981-02-09 1982-08-16 Matsushita Electric Ind Co Ltd Gravitation type heat pipe
EP0142586A1 (en) * 1983-11-17 1985-05-29 Budapesti Radiotechnikai Gyar A filter arrangement with active elements
US4659996A (en) * 1984-02-27 1987-04-21 Motorola, Inc. Method and apparatus for de-ringing a switched capacitor filter
JPS61276695A (ja) * 1985-05-31 1986-12-06 Sumitomo Electric Ind Ltd 複合パイプ、その製造方法及びそれを利用したヒ−トパイプ
EP0236579B1 (fr) * 1986-03-11 1990-09-26 Alcatel Bell-Sdt S.A. Procédé de transmission de signaux à fréquences déterminées, notamment les signaux de teléimprimeur
GB2217539B (en) * 1988-04-14 1992-09-23 Plessey Co Plc Prescaler output filter
US5142255A (en) * 1990-05-07 1992-08-25 The Texas A&M University System Planar active endfire radiating elements and coplanar waveguide filters with wide electronic tuning bandwidth
DE4038291A1 (de) * 1990-11-29 1992-06-04 Funkwerk Koepenick Gmbh I A Anordnung fuer die auswertung von selektivrufen
US8876512B2 (en) * 2008-09-23 2014-11-04 Cryovac, Inc. Die for coextruding a plurality of fluid layers
US20100072655A1 (en) * 2008-09-23 2010-03-25 Cryovac, Inc. Die, system, and method for coextruding a plurality of fluid layers
US8012572B2 (en) * 2009-03-06 2011-09-06 Cryovac, Inc. Multilayer, heat-shrinkable film comprising a plurality of microlayers

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE708317C (de) * 1939-01-17 1943-04-22 Telefunken Gmbh Anordnung zur Daempfung eines an einen Sender angeschlossenen Belastungskreises, insbesondere der Antenne eines Telegraphiesenders, in den Belastungspausen
CH294530A (de) * 1951-10-04 1953-11-15 Patelhold Patentverwertung Verfahren und Einrichtung zum Senden von Impulssignalen mit Frequenztastung, insbesondere für drahtlose Telegraphie.
US3670242A (en) * 1969-12-03 1972-06-13 Lear Siegler Inc A selective paging receiver and decoder employing an electronic filter means
FR2128019B2 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) * 1970-04-08 1973-05-11 Cit Alcatel

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU626692B2 (en) * 1989-07-12 1992-08-06 Texas Instruments Deutschland Gmbh Electrical element trimming circuit

Also Published As

Publication number Publication date
GB1412897A (en) 1975-11-05
AU6185673A (en) 1975-05-01
DE2355700A1 (de) 1974-05-22
IL43528A0 (en) 1974-06-30
JPS5330561B2 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) 1978-08-28
BR7308706D0 (pt) 1974-08-22
DE2355700B2 (de) 1977-03-10
AR201118A1 (es) 1975-02-14
US3803429A (en) 1974-04-09
HK65176A (en) 1976-10-22
CA985753A (en) 1976-03-16
DE2355700C3 (de) 1986-01-09
JPS4979653A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) 1974-08-01
IL43528A (en) 1976-05-31
ZA738270B (en) 1974-09-25
FR2205779A1 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) 1974-05-31
FR2205779B1 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) 1978-02-10

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