GB644935A - Improvements in or relating to electric pulse code modulation systems of communication - Google Patents

Improvements in or relating to electric pulse code modulation systems of communication

Info

Publication number
GB644935A
GB644935A GB5012/48A GB501248A GB644935A GB 644935 A GB644935 A GB 644935A GB 5012/48 A GB5012/48 A GB 5012/48A GB 501248 A GB501248 A GB 501248A GB 644935 A GB644935 A GB 644935A
Authority
GB
United Kingdom
Prior art keywords
code
output
pulse
circuit
pulses
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
GB5012/48A
Other languages
English (en)
Inventor
Charles William Earp
Malcolm Frank Wintle
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.)
STC PLC
Original Assignee
Standard Telephone and Cables PLC
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
Priority to BE487407D priority Critical patent/BE487407A/xx
Priority to NL92545D priority patent/NL92545C/xx
Application filed by Standard Telephone and Cables PLC filed Critical Standard Telephone and Cables PLC
Priority to GB5012/48A priority patent/GB644935A/en
Priority to US75532A priority patent/US2570220A/en
Priority to FR980979D priority patent/FR980979A/fr
Publication of GB644935A publication Critical patent/GB644935A/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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B14/00—Transmission systems not characterised by the medium used for transmission
    • H04B14/02—Transmission systems not characterised by the medium used for transmission characterised by the use of pulse modulation
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
    • H03M1/00—Analogue/digital conversion; Digital/analogue conversion
    • H03M1/12—Analogue/digital converters
    • H03M1/22—Analogue/digital converters pattern-reading type

Landscapes

  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Selective Calling Equipment (AREA)
  • Electrotherapy Devices (AREA)
  • Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
GB5012/48A 1948-02-20 1948-02-20 Improvements in or relating to electric pulse code modulation systems of communication Expired GB644935A (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
BE487407D BE487407A (forum.php) 1948-02-20
NL92545D NL92545C (forum.php) 1948-02-20
GB5012/48A GB644935A (en) 1948-02-20 1948-02-20 Improvements in or relating to electric pulse code modulation systems of communication
US75532A US2570220A (en) 1948-02-20 1949-02-10 Pulse code modulation system
FR980979D FR980979A (fr) 1948-02-20 1949-02-15 Systèmes électriques de modulation par impulsions codees pour systèmes de télécommunications

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB5012/48A GB644935A (en) 1948-02-20 1948-02-20 Improvements in or relating to electric pulse code modulation systems of communication

Publications (1)

Publication Number Publication Date
GB644935A true GB644935A (en) 1950-10-18

Family

ID=9788078

Family Applications (1)

Application Number Title Priority Date Filing Date
GB5012/48A Expired GB644935A (en) 1948-02-20 1948-02-20 Improvements in or relating to electric pulse code modulation systems of communication

Country Status (5)

Country Link
US (1) US2570220A (forum.php)
BE (1) BE487407A (forum.php)
FR (1) FR980979A (forum.php)
GB (1) GB644935A (forum.php)
NL (1) NL92545C (forum.php)

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1010220A (fr) * 1950-01-28 1952-06-09 Soicete D Electronique Et D Au Convertisseurs de numération
CH311424A (de) * 1950-04-22 1955-11-30 Gretener Edgar Ing Dr Verfahren zur Geheimhaltung von Sprache in Nachrichtenübermittlungskanälen.
SE171634C1 (sv) * 1951-05-10 1960-06-07 Siemens Ag Anrodning foer att medelst ampitudkvantisering uttrycka en elektrisk maetstorhet som en kod
US2762564A (en) * 1951-08-10 1956-09-11 Edward W Samson Binary number system converter
US2758788A (en) * 1951-11-10 1956-08-14 Bell Telephone Labor Inc Binary code translator, adder, and register
US2729790A (en) * 1952-01-02 1956-01-03 Itt Pulse code modulator
US2722660A (en) * 1952-04-29 1955-11-01 Jr John P Jones Pulse code modulation system
US2810518A (en) * 1952-07-25 1957-10-22 John D Dillon Electronic changing of number bases
US2840306A (en) * 1952-11-22 1958-06-24 Digital Control Systems Inc Di-function multiplexers and multipliers
US2839727A (en) * 1953-02-11 1958-06-17 Bell Telephone Labor Inc Encoder for pulse code modulation
GB750578A (en) * 1954-07-12 1956-06-20 Standard Telephones Cables Ltd Improvements in or relating to electric pulse coding arrangements
DE1123236B (de) * 1955-05-25 1962-02-01 Alsacienne Constr Meca Schaltanordnung zur kontinuierlichen Fernuebertragung von Winkelwerten oder von fortlaufenden Drehungen mit Hilfe von verschluesselten Frequenzmodulationen
US3021062A (en) * 1955-08-08 1962-02-13 Digital Control Systems Inc Methods and apparatus for differentiating difunction signl trains
CN112737710B (zh) * 2020-12-24 2023-02-17 重庆航天火箭电子技术有限公司 一种pcm-dpsk-fm安控接收机指标测试方法

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL87334C (forum.php) * 1938-10-03

Also Published As

Publication number Publication date
BE487407A (forum.php)
US2570220A (en) 1951-10-09
NL92545C (forum.php)
FR980979A (fr) 1951-05-21

Similar Documents

Publication Publication Date Title
US2539623A (en) Communication system
GB644935A (en) Improvements in or relating to electric pulse code modulation systems of communication
GB646050A (en) Improvements in or relating to electric pulse code modulation systems of communication
US2570221A (en) Pulse code modulation system
US2497411A (en) Pulse transmission system
US2917717A (en) Modulator for amplitude modulating a pulse train
US2921981A (en) Simplified two-channel multiplex system
US3440353A (en) Radio-transmission system
US2757239A (en) Carrier frequency control system
US2666848A (en) Selective audio gate circuit
US3286024A (en) Non-linear video-signal modulating systems with a characteristic "instantaneous frequency deviation vs. pre-emphasized signal level" having a decreasing slope with increasing absolute value of signal level
GB644932A (en) Improvements in or relating to signal compression and expansion arrangements in electric communication systems
US2491969A (en) Electric signal transmission system
US2582968A (en) Electrical pulse secrecy communication system
US2816163A (en) Synchronizing system for signal receivers
GB669617A (en) Improvements in or relating to electric pulse code modulation systems
US2405876A (en) Variable dot keyer
US2529564A (en) Pulse multiplex receiving system
GB699889A (en) Improvements in gating arrangements for pulse amplitude modulation time division multiplex signalling systems
GB747851A (en) Improvements in and relating to electrical signalling
GB660672A (en) Pulse code modulation system
GB632788A (en) Improvements in and relating to multi-channel communication transmission with modulated impulses
US2497965A (en) Electronic keying circuit with one negative and one positive voltage output
GB665074A (en) Improvements in and relating to balanced modulators
US2844652A (en) Switch device for multiplex channel transmission receivers