IT1058424B - CREST DETECTOR OF A VARIABLE - Google Patents

CREST DETECTOR OF A VARIABLE

Info

Publication number
IT1058424B
IT1058424B IT21242/76A IT2124276A IT1058424B IT 1058424 B IT1058424 B IT 1058424B IT 21242/76 A IT21242/76 A IT 21242/76A IT 2124276 A IT2124276 A IT 2124276A IT 1058424 B IT1058424 B IT 1058424B
Authority
IT
Italy
Prior art keywords
variable
crest detector
crest
detector
Prior art date
Application number
IT21242/76A
Other languages
Italian (it)
Original Assignee
Cit Alcatel Co Ind Telecommuni
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 Cit Alcatel Co Ind Telecommuni filed Critical Cit Alcatel Co Ind Telecommuni
Application granted granted Critical
Publication of IT1058424B publication Critical patent/IT1058424B/en

Links

Classifications

    • 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
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
    • G01D1/00—Measuring arrangements giving results other than momentary value of variable, of general application
    • G01D1/12—Measuring arrangements giving results other than momentary value of variable, of general application giving a maximum or minimum of a value
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R19/00—Arrangements for measuring currents or voltages or for indicating presence or sign thereof
    • G01R19/04—Measuring peak values or amplitude or envelope of ac or of pulses
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R19/00—Arrangements for measuring currents or voltages or for indicating presence or sign thereof
    • G01R19/165—Indicating that current or voltage is either above or below a predetermined value or within or outside a predetermined range of values
    • G01R19/16528—Indicating that current or voltage is either above or below a predetermined value or within or outside a predetermined range of values using digital techniques or performing arithmetic operations
    • 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
    • H04Q—SELECTING
    • H04Q1/00—Details of selecting apparatus or arrangements
    • H04Q1/18—Electrical details
    • H04Q1/30—Signalling arrangements; Manipulation of signalling currents
    • H04Q1/44—Signalling arrangements; Manipulation of signalling currents using alternate current
    • H04Q1/444—Signalling arrangements; Manipulation of signalling currents using alternate current with voice-band signalling frequencies
    • H04Q1/446—Signalling arrangements; Manipulation of signalling currents using alternate current with voice-band signalling frequencies using one signalling frequency
    • H04Q1/448—Signalling arrangements; Manipulation of signalling currents using alternate current with voice-band signalling frequencies using one signalling frequency with conversion of a single frequency signal into a digital signal

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Power Engineering (AREA)
  • Analogue/Digital Conversion (AREA)
  • Measurement Of Current Or Voltage (AREA)
  • Control Of Amplification And Gain Control (AREA)
  • Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
  • Monitoring And Testing Of Transmission In General (AREA)
IT21242/76A 1975-03-20 1976-03-16 CREST DETECTOR OF A VARIABLE IT1058424B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7508763A FR2304899A1 (en) 1975-03-20 1975-03-20 PEAK DETECTOR OF A VARIABLE

Publications (1)

Publication Number Publication Date
IT1058424B true IT1058424B (en) 1982-04-10

Family

ID=9152843

Family Applications (1)

Application Number Title Priority Date Filing Date
IT21242/76A IT1058424B (en) 1975-03-20 1976-03-16 CREST DETECTOR OF A VARIABLE

Country Status (11)

Country Link
JP (1) JPS51117671A (en)
BE (1) BE839223A (en)
DE (1) DE2610834A1 (en)
DK (1) DK144548C (en)
FR (1) FR2304899A1 (en)
GB (1) GB1499635A (en)
IE (1) IE42518B1 (en)
IT (1) IT1058424B (en)
LU (1) LU74516A1 (en)
NL (1) NL7602866A (en)
SE (1) SE408844B (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4156280A (en) * 1976-12-17 1979-05-22 International Business Machines Corporation Utility monitor for detecting and storing power line disturbances
CA1130920A (en) * 1979-03-05 1982-08-31 William G. Crouse Speech detector with variable threshold
FR2451680A1 (en) * 1979-03-12 1980-10-10 Soumagne Joel SPEECH / SILENCE DISCRIMINATOR FOR SPEECH INTERPOLATION
HU179871B (en) * 1980-06-05 1982-12-28 Mueszeripari Kutato Intezet Apparatus for searching extreme value of and noise compensation at the procession of sampled signals
FR2543304B1 (en) * 1983-03-22 1985-07-12 Soletanche METHOD AND DEVICE FOR OBTAINING THE PEAK VALUE OF A SIGNAL AND APPLICATION TO A METHOD AND DEVICE FOR DETERMINING THE HARDNESS OF A SOIL
EP0253039B1 (en) * 1986-07-15 1991-04-03 International Business Machines Corporation Method and apparatus for the protection against echos in a modem

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3543156A (en) * 1967-11-03 1970-11-24 Us Army Automatic digital pulse analyzer
US3593334A (en) * 1968-11-29 1971-07-13 Burroughs Corp Pulse discrimination system
DE2006491A1 (en) * 1970-02-13 1971-08-26 Losenhausen Testomax Gmbh Peak value calculator

Also Published As

Publication number Publication date
IE42518L (en) 1976-09-20
DK122576A (en) 1976-09-21
IE42518B1 (en) 1980-08-27
DK144548C (en) 1982-09-06
JPS51117671A (en) 1976-10-15
NL7602866A (en) 1976-09-22
FR2304899A1 (en) 1976-10-15
DK144548B (en) 1982-03-22
SE7603353L (en) 1976-09-21
SE408844B (en) 1979-07-09
DE2610834A1 (en) 1976-09-30
FR2304899B1 (en) 1977-11-18
LU74516A1 (en) 1977-01-11
GB1499635A (en) 1978-02-01
BE839223A (en) 1976-09-06

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