GB630095A - Improvements in or relating to signalling systems - Google Patents

Improvements in or relating to signalling systems

Info

Publication number
GB630095A
GB630095A GB11874/47A GB1187447A GB630095A GB 630095 A GB630095 A GB 630095A GB 11874/47 A GB11874/47 A GB 11874/47A GB 1187447 A GB1187447 A GB 1187447A GB 630095 A GB630095 A GB 630095A
Authority
GB
United Kingdom
Prior art keywords
amplitude
electrical quantity
voltage
pulses
signal
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
GB11874/47A
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.)
AT&T Corp
Original Assignee
Western Electric Co Inc
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 Western Electric Co Inc filed Critical Western Electric Co Inc
Publication of GB630095A publication Critical patent/GB630095A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
    • H03M1/00—Analogue/digital conversion; Digital/analogue conversion
    • H03M1/66—Digital/analogue converters
    • H03M1/82—Digital/analogue converters with intermediate conversion to time interval
    • H03M1/822—Digital/analogue converters with intermediate conversion to time interval using pulse width modulation
    • H03M1/827—Digital/analogue converters with intermediate conversion to time interval using pulse width modulation in which the total pulse width is distributed over multiple shorter pulse widths

Landscapes

  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Control Of Amplification And Gain Control (AREA)
  • Arrangements For Transmission Of Measured Signals (AREA)
  • Other Investigation Or Analysis Of Materials By Electrical Means (AREA)
GB11874/47A 1945-07-09 1947-05-02 Improvements in or relating to signalling systems Expired GB630095A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US603990A US2464607A (en) 1945-07-09 1945-07-09 Pulse code modulation communication system

Publications (1)

Publication Number Publication Date
GB630095A true GB630095A (en) 1949-10-05

Family

ID=24417729

Family Applications (1)

Application Number Title Priority Date Filing Date
GB11874/47A Expired GB630095A (en) 1945-07-09 1947-05-02 Improvements in or relating to signalling systems

Country Status (7)

Country Link
US (1) US2464607A (en:Method)
BE (1) BE473323A (en:Method)
CH (1) CH287037A (en:Method)
DE (1) DE892605C (en:Method)
FR (1) FR946925A (en:Method)
GB (1) GB630095A (en:Method)
NL (1) NL77660C (en:Method)

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE473323A (en:Method) * 1945-07-09 1900-01-01
US2629857A (en) * 1946-08-10 1953-02-24 Int Standard Electric Corp Communication system utilizing constant amplitude pulses of opposite polarities
US2640105A (en) * 1947-10-10 1953-05-26 Bell Telephone Labor Inc Wave transmission system and method for synthesizing a given electrical characteristic
US2610295A (en) * 1947-10-30 1952-09-09 Bell Telephone Labor Inc Pulse code modulation communication system
GB644932A (en) * 1948-01-16 1950-10-18 Standard Telephones Cables Ltd Improvements in or relating to signal compression and expansion arrangements in electric communication systems
GB664401A (en) * 1948-03-25 1952-01-09 Nat Res Dev Improvements in thermionic valve circuits
US2541932A (en) * 1948-05-19 1951-02-13 Bell Telephone Labor Inc Multiplex speech interpolation system
BE489207A (en:Method) * 1948-05-22
US2592308A (en) * 1948-09-01 1952-04-08 Bell Telephone Labor Inc Nonlinear pulse code modulation system
US2603714A (en) * 1948-09-01 1952-07-15 Bell Telephone Labor Inc Percentage time division multiplex for pulse code modulation
BE491489A (en:Method) * 1948-10-04
US2710397A (en) * 1950-06-24 1955-06-07 George E Foster Electrical measuring apparatus
FR1113752A (fr) * 1950-09-22 1956-04-04 Thomson Houston Comp Francaise Dispositif de modulation pour systèmes de communication par impulsions codées

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1928093A (en) * 1927-04-11 1933-09-26 Harold B Coyle Signaling system
NL88393C (en:Method) * 1937-06-18
US2262838A (en) * 1937-11-19 1941-11-18 Int Standard Electric Corp Electric signaling system
US2352634A (en) * 1938-07-18 1944-07-04 Maury I Hull Signaling system
NL87334C (en:Method) * 1938-10-03
US2415329A (en) * 1944-11-06 1947-02-04 Arndt Oscar Center drill
BE473323A (en:Method) * 1945-07-09 1900-01-01
US2508622A (en) * 1945-07-09 1950-05-23 Bell Telephone Labor Inc Pulse code modulation communication system

Also Published As

Publication number Publication date
CH287037A (fr) 1952-11-15
DE892605C (de) 1953-10-08
US2464607A (en) 1949-03-15
BE473323A (en:Method) 1900-01-01
NL77660C (en:Method) 1900-01-01
FR946925A (fr) 1949-06-17

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