CH550515A - Schaltungsanordnung fuer fernmeldesysteme mit kodemodulation. - Google Patents

Schaltungsanordnung fuer fernmeldesysteme mit kodemodulation.

Info

Publication number
CH550515A
CH550515A CH1044672A CH1044672A CH550515A CH 550515 A CH550515 A CH 550515A CH 1044672 A CH1044672 A CH 1044672A CH 1044672 A CH1044672 A CH 1044672A CH 550515 A CH550515 A CH 550515A
Authority
CH
Switzerland
Prior art keywords
circuit arrangement
code modulation
remote indication
indication systems
systems
Prior art date
Application number
CH1044672A
Other languages
German (de)
English (en)
Original Assignee
Philips Nv
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 Philips Nv filed Critical Philips Nv
Publication of CH550515A publication Critical patent/CH550515A/xx

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B3/00—Line transmission systems
    • H04B3/02—Details
    • H04B3/20—Reducing echo effects or singing; Opening or closing transmitting path; Conditioning for transmission in one direction or the other
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04J—MULTIPLEX COMMUNICATION
    • H04J3/00—Time-division multiplex systems
    • H04J3/17—Time-division multiplex systems in which the transmission channel allotted to a first user may be taken away and re-allotted to a second user if the first user becomes inactive, e.g. TASI
    • H04J3/175—Speech activity or inactivity detectors
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M3/00—Automatic or semi-automatic exchanges
    • H04M3/42—Systems providing special services or facilities to subscribers
    • H04M3/56—Arrangements for connecting several subscribers to a common circuit, i.e. affording conference facilities
    • H04M3/568—Arrangements for connecting several subscribers to a common circuit, i.e. affording conference facilities audio processing specific to telephonic conferencing, e.g. spatial distribution, mixing of participants
    • H04M3/569—Arrangements for connecting several subscribers to a common circuit, i.e. affording conference facilities audio processing specific to telephonic conferencing, e.g. spatial distribution, mixing of participants using the instant speaker's algorithm
    • 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
    • H04M9/085—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 digital techniques

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Multimedia (AREA)
  • Analogue/Digital Conversion (AREA)
  • Arrangements For Transmission Of Measured Signals (AREA)
  • Transceivers (AREA)
  • Interconnected Communication Systems, Intercoms, And Interphones (AREA)
  • Use Of Switch Circuits For Exchanges And Methods Of Control Of Multiplex Exchanges (AREA)
CH1044672A 1971-07-15 1972-07-12 Schaltungsanordnung fuer fernmeldesysteme mit kodemodulation. CH550515A (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL7109806.A NL162274C (nl) 1971-07-15 1971-07-15 Spraakgestuurde schakelinrichting.

Publications (1)

Publication Number Publication Date
CH550515A true CH550515A (de) 1974-06-14

Family

ID=19813622

Family Applications (1)

Application Number Title Priority Date Filing Date
CH1044672A CH550515A (de) 1971-07-15 1972-07-12 Schaltungsanordnung fuer fernmeldesysteme mit kodemodulation.

Country Status (12)

Country Link
US (1) US3794763A (show.php)
JP (1) JPS5740696B1 (show.php)
AT (1) AT342660B (show.php)
AU (1) AU470286B2 (show.php)
BE (1) BE786256A (show.php)
CA (1) CA957076A (show.php)
CH (1) CH550515A (show.php)
DK (1) DK133220C (show.php)
FR (1) FR2145728B1 (show.php)
GB (1) GB1403217A (show.php)
NL (1) NL162274C (show.php)
SE (1) SE372681B (show.php)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5615380A (en) * 1969-11-24 1997-03-25 Hyatt; Gilbert P. Integrated circuit computer system having a keyboard input and a sound output
US4028506A (en) * 1973-12-12 1977-06-07 Nippon Electric Company, Ltd. Maximum value tracing circuit for digitized voice signals
US3944743A (en) * 1974-01-07 1976-03-16 Plantronics, Inc. Method and apparatus for feedback suppression
US3931480A (en) * 1974-09-04 1976-01-06 Gte Sylvania Incorporated Time compression receiver
NO134477C (show.php) * 1974-10-29 1976-10-13 Manus Max
US3953676A (en) * 1974-12-12 1976-04-27 Northern Electric Company, Limited Digital control of a loudspeaking telephone system
JPS5263165U (show.php) * 1975-11-06 1977-05-10
US4052568A (en) * 1976-04-23 1977-10-04 Communications Satellite Corporation Digital voice switch
US4110560A (en) * 1977-11-23 1978-08-29 Gte Sylvania Incorporated Communication apparatus
DE3137314C2 (de) * 1981-09-16 1984-03-29 Siemens AG, 1000 Berlin und 8000 München Schaltungsanordnung für sprachgesteuerte Freisprechgeräte
JP2800779B2 (ja) * 1996-05-31 1998-09-21 日本電気株式会社 患者監視システム

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3524929A (en) * 1967-06-29 1970-08-18 Automatic Elect Lab Telephone conference circuit
US3530247A (en) * 1967-08-29 1970-09-22 Bell Telephone Labor Inc Digital vocoder conference system
US3712959A (en) * 1969-07-14 1973-01-23 Communications Satellite Corp Method and apparatus for detecting speech signals in the presence of noise
US3674936A (en) * 1970-02-26 1972-07-04 Burroughs Corp Voice conference system

Also Published As

Publication number Publication date
ATA603372A (de) 1977-08-15
US3794763A (en) 1974-02-26
DE2232358B2 (de) 1976-12-02
DK133220C (da) 1976-09-06
FR2145728B1 (show.php) 1980-02-15
JPS4820405A (show.php) 1973-03-14
DE2232358A1 (de) 1973-01-18
FR2145728A1 (show.php) 1973-02-23
DK133220B (da) 1976-04-05
NL162274C (nl) 1980-04-15
NL162274B (nl) 1979-11-15
CA957076A (en) 1974-10-29
GB1403217A (en) 1975-08-28
JPS5740696B1 (show.php) 1982-08-30
AU4437572A (en) 1974-01-17
AU470286B2 (en) 1976-03-11
NL7109806A (show.php) 1973-01-17
SE372681B (show.php) 1974-12-23
AT342660B (de) 1978-04-10
BE786256A (fr) 1973-01-15

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Legal Events

Date Code Title Description
PL Patent ceased