IT1003145B - Dispositivo per variare le frequen ze di un segnale di comunicazione - Google Patents

Dispositivo per variare le frequen ze di un segnale di comunicazione

Info

Publication number
IT1003145B
IT1003145B IT29726/73A IT2972673A IT1003145B IT 1003145 B IT1003145 B IT 1003145B IT 29726/73 A IT29726/73 A IT 29726/73A IT 2972673 A IT2972673 A IT 2972673A IT 1003145 B IT1003145 B IT 1003145B
Authority
IT
Italy
Prior art keywords
frequencies
change
communication signal
communication
signal
Prior art date
Application number
IT29726/73A
Other languages
English (en)
Original Assignee
Itt
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 Itt filed Critical Itt
Application granted granted Critical
Publication of IT1003145B publication Critical patent/IT1003145B/it

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M9/00—Arrangements for interconnection not involving centralised switching
    • H04M9/08—Two-way loud-speaking telephone systems with means for conditioning the signal, e.g. for suppressing echoes for one or both directions of traffic
    • H04M9/087—Two-way loud-speaking telephone systems with means for conditioning the signal, e.g. for suppressing echoes for one or both directions of traffic using different frequency bands for transmitting and receiving paths ; using phase shifting arrangements
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03C—MODULATION
    • H03C3/00—Angle modulation

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Transceivers (AREA)
  • Electromechanical Clocks (AREA)
  • Interconnected Communication Systems, Intercoms, And Interphones (AREA)
IT29726/73A 1972-10-07 1973-10-04 Dispositivo per variare le frequen ze di un segnale di comunicazione IT1003145B (it)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2249257A DE2249257A1 (de) 1972-10-07 1972-10-07 Verfahren zum aendern der frequenzen eines nachrichtensignals

Publications (1)

Publication Number Publication Date
IT1003145B true IT1003145B (it) 1976-06-10

Family

ID=5858443

Family Applications (1)

Application Number Title Priority Date Filing Date
IT29726/73A IT1003145B (it) 1972-10-07 1973-10-04 Dispositivo per variare le frequen ze di un segnale di comunicazione

Country Status (6)

Country Link
JP (1) JPS4974407A (it)
DE (1) DE2249257A1 (it)
FR (1) FR2202401B1 (it)
GB (1) GB1444810A (it)
IT (1) IT1003145B (it)
ZA (1) ZA737683B (it)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
HU169185B (it) * 1974-06-05 1976-10-28
GB2151886A (en) * 1983-12-21 1985-07-24 British Broadcasting Corp Conditional-access broadcast transmission
WO2007049200A1 (en) 2005-10-24 2007-05-03 Koninklijke Philips Electronics N.V. A device for and a method of audio data processing

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3444396A (en) * 1965-03-24 1969-05-13 Rca Corp Signal translating circuit providing signal-controlled time delay
US3559103A (en) * 1965-10-05 1971-01-26 Duane H Cooper Method of delay modulation
AU459101B2 (en) * 1972-02-10 1975-03-20 Matsushita Electric Industrial Co., Ltd. Samplling modulation system for an electronic misical instrument
US3749837A (en) * 1972-05-02 1973-07-31 J Doughty Electronic musical tone modifier for musical instruments

Also Published As

Publication number Publication date
GB1444810A (en) 1976-08-04
FR2202401A1 (it) 1974-05-03
ZA737683B (en) 1974-08-28
JPS4974407A (it) 1974-07-18
FR2202401B1 (it) 1977-03-11
DE2249257A1 (de) 1974-04-11

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