GB1403217A - Speech-controlled switching arrangement - Google Patents

Speech-controlled switching arrangement

Info

Publication number
GB1403217A
GB1403217A GB3256972A GB3256972A GB1403217A GB 1403217 A GB1403217 A GB 1403217A GB 3256972 A GB3256972 A GB 3256972A GB 3256972 A GB3256972 A GB 3256972A GB 1403217 A GB1403217 A GB 1403217A
Authority
GB
United Kingdom
Prior art keywords
signal
station
generator
input
signals
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
GB3256972A
Other languages
English (en)
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.)
Philips Electronics UK Ltd
Original Assignee
Philips Electronic and Associated Industries Ltd
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 Electronic and Associated Industries Ltd filed Critical Philips Electronic and Associated Industries Ltd
Publication of GB1403217A publication Critical patent/GB1403217A/en
Expired legal-status Critical Current

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)
GB3256972A 1971-07-15 1972-07-12 Speech-controlled switching arrangement Expired GB1403217A (en)

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
GB1403217A true GB1403217A (en) 1975-08-28

Family

ID=19813622

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3256972A Expired GB1403217A (en) 1971-07-15 1972-07-12 Speech-controlled switching arrangement

Country Status (12)

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

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 (enExample) * 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 (enExample) * 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 (enExample) 1980-02-15
JPS4820405A (enExample) 1973-03-14
DE2232358A1 (de) 1973-01-18
CH550515A (de) 1974-06-14
FR2145728A1 (enExample) 1973-02-23
DK133220B (da) 1976-04-05
NL162274C (nl) 1980-04-15
NL162274B (nl) 1979-11-15
CA957076A (en) 1974-10-29
JPS5740696B1 (enExample) 1982-08-30
AU4437572A (en) 1974-01-17
AU470286B2 (en) 1976-03-11
NL7109806A (enExample) 1973-01-17
SE372681B (enExample) 1974-12-23
AT342660B (de) 1978-04-10
BE786256A (fr) 1973-01-15

Similar Documents

Publication Publication Date Title
US3500441A (en) Delta modulation with discrete companding
US3207851A (en) Transmission system for pulse-codemodulated signals
GB1403217A (en) Speech-controlled switching arrangement
SE318914B (enExample)
GB1521340A (en) Digital data communication network
US2530957A (en) Time division system for modulated pulse transmission
US3560659A (en) System for the transmission of analogue signals by means of pulse code modulation
US3622707A (en) Multiple channel subscriber loop
GB1413690A (en) Closed-loop telecommunication system
US3873776A (en) Alarm arrangement for a time-division multiplex, pulse-code modulation carrier system
US3752921A (en) Distinct complex signals formed by plural clipping transformations of superposed isochronal pulse code sequences
GB1519607A (en) Digital control of a loudspeaking telephone system
ES427945A1 (es) Un centro de conmutacion para telecomunicacion automatico.
US3435149A (en) Tone generators for delta modulation time division communication switching systems
US3428754A (en) Conference system wherein transmitting and receiving terminals are separately connected to a talking bus
DE3200934A1 (de) Verfahren und anordnung zum mischen von niederfrequenzsignalen, die in form digitaler abtastproben vorliegen
US3651265A (en) Bipolar repeater
US3524938A (en) Output circuit for pulse code modulation time sharing system
GB1117292A (en) Supervisory apparatus for telecommunication systems
US3153701A (en) Regenerative repeater for a time division multiplex start-stop telegraph switching system
US3492434A (en) Dial pulsing signaling system utilizing coded pulse group transmission over a common signaling channel
JPS5718153A (en) Plural trunk connection system
US2897355A (en) Diode coincidence gate
GB1076557A (en) Improvements in data transmission apparatus
US2850572A (en) Telephone system

Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PCNP Patent ceased through non-payment of renewal fee