IT1205753B - Sistema di trasmissione via telefono - Google Patents

Sistema di trasmissione via telefono

Info

Publication number
IT1205753B
IT1205753B IT47728/87A IT4772887A IT1205753B IT 1205753 B IT1205753 B IT 1205753B IT 47728/87 A IT47728/87 A IT 47728/87A IT 4772887 A IT4772887 A IT 4772887A IT 1205753 B IT1205753 B IT 1205753B
Authority
IT
Italy
Prior art keywords
transmission system
telephone transmission
telephone
transmission
Prior art date
Application number
IT47728/87A
Other languages
English (en)
Other versions
IT8747728A0 (it
Inventor
Eric Paneth
Original Assignee
Int Mobile Machines
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=25283546&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=IT1205753(B) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Int Mobile Machines filed Critical Int Mobile Machines
Publication of IT8747728A0 publication Critical patent/IT8747728A0/it
Application granted granted Critical
Publication of IT1205753B publication Critical patent/IT1205753B/it

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04J—MULTIPLEX COMMUNICATION
    • H04J1/00—Frequency-division multiplex systems
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03L—AUTOMATIC CONTROL, STARTING, SYNCHRONISATION OR STABILISATION OF GENERATORS OF ELECTRONIC OSCILLATIONS OR PULSES
    • H03L7/00—Automatic control of frequency or phase; Synchronisation
    • H03L7/06—Automatic control of frequency or phase; Synchronisation using a reference signal applied to a frequency- or phase-locked loop
    • H03L7/16—Indirect frequency synthesis, i.e. generating a desired one of a number of predetermined frequencies using a frequency- or phase-locked loop
    • H03L7/22—Indirect frequency synthesis, i.e. generating a desired one of a number of predetermined frequencies using a frequency- or phase-locked loop using more than one loop
    • H03L7/23—Indirect frequency synthesis, i.e. generating a desired one of a number of predetermined frequencies using a frequency- or phase-locked loop using more than one loop with pulse counters or frequency dividers
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03L—AUTOMATIC CONTROL, STARTING, SYNCHRONISATION OR STABILISATION OF GENERATORS OF ELECTRONIC OSCILLATIONS OR PULSES
    • H03L7/00—Automatic control of frequency or phase; Synchronisation
    • H03L7/06—Automatic control of frequency or phase; Synchronisation using a reference signal applied to a frequency- or phase-locked loop
    • H03L7/16—Indirect frequency synthesis, i.e. generating a desired one of a number of predetermined frequencies using a frequency- or phase-locked loop
    • H03L7/22—Indirect frequency synthesis, i.e. generating a desired one of a number of predetermined frequencies using a frequency- or phase-locked loop using more than one loop

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Stabilization Of Oscillater, Synchronisation, Frequency Synthesizers (AREA)
  • Superheterodyne Receivers (AREA)
  • Transmitters (AREA)
  • Transceivers (AREA)
  • Channel Selection Circuits, Automatic Tuning Circuits (AREA)
IT47728/87A 1986-03-18 1987-03-16 Sistema di trasmissione via telefono IT1205753B (it)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US06/840,908 US4785260A (en) 1986-03-18 1986-03-18 Frequency synthesizer for broadcast telephone system having multiple assignable frequency channels

Publications (2)

Publication Number Publication Date
IT8747728A0 IT8747728A0 (it) 1987-03-16
IT1205753B true IT1205753B (it) 1989-03-31

Family

ID=25283546

Family Applications (1)

Application Number Title Priority Date Filing Date
IT47728/87A IT1205753B (it) 1986-03-18 1987-03-16 Sistema di trasmissione via telefono

Country Status (26)

Country Link
US (1) US4785260A (it)
JP (1) JPH0785537B2 (it)
KR (1) KR900002695B1 (it)
CN (1) CN1007397B (it)
AT (1) AT400787B (it)
AU (1) AU570859B2 (it)
BE (1) BE905821A (it)
BR (1) BR8701214A (it)
CA (1) CA1257337A (it)
CH (1) CH671661A5 (it)
DE (1) DE3640555C2 (it)
DK (1) DK175646B1 (it)
ES (1) ES2004164A6 (it)
FI (1) FI90608C (it)
FR (1) FR2597684B1 (it)
GB (1) GB2188201B (it)
HK (1) HK66290A (it)
IL (1) IL80496A (it)
IN (1) IN169257B (it)
IT (1) IT1205753B (it)
MX (1) MX164954B (it)
MY (1) MY101551A (it)
NL (1) NL8700646A (it)
NO (1) NO864619L (it)
SE (1) SE467902B (it)
SG (1) SG11590G (it)

Families Citing this family (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4862107A (en) * 1986-03-18 1989-08-29 International Mobile Machines Corporation Frequency synthesizer for broadcast telephone system having multiple assignable frequency channels
US4825448A (en) * 1986-08-07 1989-04-25 International Mobile Machines Corporation Subscriber unit for wireless digital telephone system
DE3914990A1 (de) * 1989-05-06 1990-11-08 Ako Werke Gmbh & Co Strahlungsheizeinrichtung
FI895068A0 (fi) * 1989-10-25 1989-10-25 Telenokia Oy Frekvenssyntetisator.
JP2864143B2 (ja) * 1990-03-20 1999-03-03 富士通株式会社 信号検出回路
KR930008433B1 (ko) * 1991-05-15 1993-08-31 금성일렉트론 주식회사 듀얼 위상동기 루프의 락 검출장치
US5144254A (en) * 1991-09-30 1992-09-01 Wilke William G Dual synthesizer including programmable counters which are controlled by means of calculated input controls
US5301366A (en) * 1992-04-07 1994-04-05 Rockwell International Corporation High performance frequency tuning with low cost synthesizer
ES2060536B1 (es) * 1992-11-30 1995-06-01 Alcatel Standard Electrica Sintetizador de frecuencias.
US5317284A (en) * 1993-02-08 1994-05-31 Hughes Aircraft Company Wide band, low noise, fine step tuning, phase locked loop frequency synthesizer
US5317285A (en) * 1993-02-26 1994-05-31 Motorola, Inc. Frequency synthesizer employing a continuously adaptive phase detector and method
US5354893A (en) * 1993-07-30 1994-10-11 The University Of Delaware CMS/SiO2 /Al2 O3 catalysts for improved selectivity in the synthesis of amines from methanol and/or dimethyl ether and ammonia
JP3000360U (ja) * 1994-01-21 1994-08-09 株式会社船井電機研究所 通信機器用基準信号生成回路
FR2745138B1 (fr) * 1996-02-16 1998-05-07 Thomson Multimedia Sa Dispositif de correction de bruit de phase dans un recepteur numerique
DE19747735C2 (de) * 1997-10-29 2003-04-30 Infineon Technologies Ag Frequenzsynthesizer für ein Mobilfunkendgerät
FR2791213B1 (fr) * 1999-03-16 2001-05-25 Sagem Dispositif et procede d'emission dans un telephone mobile
WO2008001811A1 (en) * 2006-06-29 2008-01-03 Nippon Telegraph And Telephone Corporation Cdr circuit
FR2913151A1 (fr) * 2007-06-26 2008-08-29 Thomson Licensing Sas Procede de limitation des perturbations dues a la microphonie dans le dispositifs d'emission reception radio frequence

Family Cites Families (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3435367A (en) * 1967-08-24 1969-03-25 Bendix Corp Digitally controlled frequency synthesizer
US3546617A (en) * 1968-11-26 1970-12-08 Rca Corp Digital frequency synthesizer
GB1303631A (it) * 1969-03-01 1973-01-17
NL163396C (nl) * 1974-04-22 1980-08-15 Philips Nv Meerkanaalgenerator.
JPS527613A (en) * 1975-07-09 1977-01-20 Oki Electric Ind Co Ltd Afc system
JPS5254356A (en) * 1975-10-30 1977-05-02 Toshiba Corp Pahse-synchronized variable frequency oscillator
JPS5358A (en) * 1976-06-24 1978-01-05 Yaesu Musen Kk Fast responding pll oscillating circuit
DE2741351C2 (de) * 1977-09-14 1983-12-08 Wandel & Goltermann Gmbh & Co, 7412 Eningen Digital einstellbarer Frequenzerzeuger mit mehreren Oszillatoren
FR2412981A1 (fr) * 1977-12-23 1979-07-20 Adret Electronique Synthetiseur de frequence a boucles multiples d'asservissement de phase, agence de facon a eviter toute discontinuite de frequence ou d'amplitude dans une large gamme de variation de frequence
GB2045556B (en) * 1979-03-06 1983-08-03 Racal Dana Instr Ltd Frequency synthesizers
US4234929A (en) * 1979-09-24 1980-11-18 Harris Corporation Control device for a phase lock loop vernier frequency synthesizer
GB2079552B (en) * 1980-07-02 1984-02-01 Philips Electronic Associated Double phase lock loop
JPS5854740A (ja) * 1981-09-28 1983-03-31 Nec Corp 周波数シンセサイザ
JPS58189632U (ja) * 1982-06-11 1983-12-16 アイコム株式会社 周波数シンセサイザ
US4511859A (en) * 1982-08-30 1985-04-16 At&T Bell Laboratories Apparatus for generating a common output signal as a function of any of a plurality of diverse input signals
US4551689A (en) * 1983-02-25 1985-11-05 Comtech Telecommunications Corp. RF Local oscillator with low phase noise

Also Published As

Publication number Publication date
FI90608C (fi) 1994-02-25
CH671661A5 (it) 1989-09-15
NO864619L (no) 1987-09-21
IL80496A (en) 1990-04-29
CA1257337A (en) 1989-07-11
GB2188201B (en) 1989-12-06
AT400787B (de) 1996-03-25
FI864927A (fi) 1987-09-19
BE905821A (fr) 1987-05-27
KR900002695B1 (ko) 1990-04-23
CN87101989A (zh) 1987-11-18
GB8627430D0 (en) 1986-12-17
ES2004164A6 (es) 1988-12-16
IN169257B (it) 1991-09-21
FI90608B (fi) 1993-11-15
AU570859B2 (en) 1988-03-24
DK175646B1 (da) 2005-01-03
FI864927A0 (fi) 1986-12-02
SE8604662L (sv) 1987-09-19
GB2188201A (en) 1987-09-23
HK66290A (en) 1990-08-31
ATA36487A (de) 1995-07-15
DE3640555C2 (de) 1997-05-15
FR2597684A1 (fr) 1987-10-23
BR8701214A (pt) 1987-12-29
FR2597684B1 (fr) 1990-12-14
US4785260A (en) 1988-11-15
DK128787A (da) 1987-09-19
NO864619D0 (no) 1986-11-19
SE8604662D0 (sv) 1986-10-31
AU6429886A (en) 1987-10-01
SE467902B (sv) 1992-09-28
DE3640555A1 (de) 1987-09-24
MY101551A (en) 1991-12-17
SG11590G (en) 1990-07-06
IL80496A0 (en) 1987-02-27
MX164954B (es) 1992-10-09
JPS62242421A (ja) 1987-10-23
CN1007397B (zh) 1990-03-28
DK128787D0 (da) 1987-03-13
NL8700646A (nl) 1987-10-16
IT8747728A0 (it) 1987-03-16
JPH0785537B2 (ja) 1995-09-13
KR870009563A (ko) 1987-10-27

Similar Documents

Publication Publication Date Title
DE3787724T3 (de) Spreizspektrummultiplex-übertragungssystem.
BR8704061A (pt) Sistema
DE3787787T2 (de) Kommunikationssystem.
DE3785781T2 (de) Zusammengesetztes qam-psk-uebertragungssystem.
DE3855567D1 (de) Übertragungssystem
IT1214500B (it) Sistema di commutazione di comunicazione.
DE3786222D1 (de) Fernsprechsystem.
IT1205753B (it) Sistema di trasmissione via telefono
DE3873190D1 (de) Kommunikationssystem.
DE3761353D1 (de) Trennvorrichtung.
BR8701012A (pt) Sistema de comunicacao
DE3787252D1 (de) Ortungssystem.
ES536153A0 (es) Sistema de telecomunicaciones
DE3881724D1 (de) Kommunikationssystem.
IT1216935B (it) Dispositivo di accoppiamento.
DK110387D0 (da) Kommunikationsanlaeg
NO880055D0 (no) Lokaliseringssystem.
DK142787D0 (da) Kommunikationsanlaeg
ES532674A0 (es) Sistema de interfonia
PT85136A (pt) Sistema de comunicacoes telefonicas
BR8706480A (pt) Sistema telefonico
IT8848269A0 (it) Sistema di comunicazioni
BR6601048U (pt) Sistema de transmissao digital
BR8906253A (pt) Sistema de comunicacao telefonico gratuito
DK284686D0 (da) Transmissionssystem

Legal Events

Date Code Title Description
TA Fee payment date (situation as of event date), data collected since 19931001

Effective date: 19970329