GB638336A - Improvements in or relating to carrier wave communication systems employing frequency modulations - Google Patents

Improvements in or relating to carrier wave communication systems employing frequency modulations

Info

Publication number
GB638336A
GB638336A GB4344/48A GB434448A GB638336A GB 638336 A GB638336 A GB 638336A GB 4344/48 A GB4344/48 A GB 4344/48A GB 434448 A GB434448 A GB 434448A GB 638336 A GB638336 A GB 638336A
Authority
GB
United Kingdom
Prior art keywords
frequency
generator
relating
carrier wave
communication systems
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
GB4344/48A
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.)
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
Application filed by Standard Telephone and Cables PLC filed Critical Standard Telephone and Cables PLC
Publication of GB638336A publication Critical patent/GB638336A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03C—MODULATION
    • H03C3/00—Angle modulation
    • H03C3/02—Details
    • H03C3/09—Modifications of modulator for regulating the mean frequency
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04J—MULTIPLEX COMMUNICATION
    • H04J3/00—Time-division multiplex systems

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Selective Calling Equipment (AREA)
  • Transmitters (AREA)
GB4344/48A 1947-03-20 1948-02-13 Improvements in or relating to carrier wave communication systems employing frequency modulations Expired GB638336A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US735961A US2468038A (en) 1947-03-20 1947-03-20 Frequency modulation stabilization system

Publications (1)

Publication Number Publication Date
GB638336A true GB638336A (en) 1950-06-07

Family

ID=24957899

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4344/48A Expired GB638336A (en) 1947-03-20 1948-02-13 Improvements in or relating to carrier wave communication systems employing frequency modulations

Country Status (5)

Country Link
US (1) US2468038A (xx)
BE (1) BE482222A (xx)
ES (1) ES182282A1 (xx)
FR (1) FR963218A (xx)
GB (1) GB638336A (xx)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2559644A (en) * 1948-09-18 1951-07-10 Rca Corp Pulse multiplex system
US2652536A (en) * 1950-07-07 1953-09-15 James R Alburger Radio broadcast system
US2874216A (en) * 1953-10-27 1959-02-17 Gen Electric Automatic signal control system
US2889521A (en) * 1954-01-12 1959-06-02 Itt Automatic frequency control in pulse modulation systems
US3037568A (en) * 1958-09-16 1962-06-05 Hughes Aircraft Co Digital communications receiver
US4656512A (en) * 1985-05-16 1987-04-07 Grumman Aerospace Corporation Multiple audio transmission system using a single video color carrier

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2201978A (en) * 1938-10-26 1940-05-28 Rca Corp Frequency control circuits
US2296962A (en) * 1939-12-22 1942-09-29 Rca Corp Frequency modulation
US2377326A (en) * 1942-04-06 1945-06-05 Rca Corp Automatic frequency control system

Also Published As

Publication number Publication date
BE482222A (xx)
US2468038A (en) 1949-04-26
ES182282A1 (es) 1948-04-01
FR963218A (xx) 1950-07-01

Similar Documents

Publication Publication Date Title
GB610464A (en) Electric pulse communication systems
GB651088A (en) Electric pulse communication system
GB624543A (en) Modulation systems
GB582753A (en) Improvements in means for amplifying and translating electrical impulses
GB638336A (en) Improvements in or relating to carrier wave communication systems employing frequency modulations
GB669617A (en) Improvements in or relating to electric pulse code modulation systems
GB604130A (en) Improvements in or relating to electric pulse communication systems
GB632788A (en) Improvements in and relating to multi-channel communication transmission with modulated impulses
GB997992A (en) Multiplex channel selector
SE337049B (xx)
GB611392A (en) Improvements in and relating to pulse generators
GB651753A (en) Improvements in or relating to multiplex transmission arrangements for pulse-phase modulation transmission
GB592584A (en) Improvements in pulse modulation systems
GB1519972A (en) Data transmission system
GB687174A (en) Improvements in or relating to pulse modulated wireless multi-channel transmission systems
GB632901A (en) Receiving arrangements for multichannel electric pulse communication systems
US2509064A (en) Reduction of noise in pulse position modulation systems
GB703247A (en) Improvements in or relating to electric pulse communication systems
GB580843A (en) Improvements in or relating to secrecy communication systems
GB725261A (en) Improvements in or relating to a modulation limiting device for electric pulse modulation multiplex communication systems
GB623993A (en) Improvements in and relating to radio-pulse communication systems
GB785707A (en) Radio beacons
GB600148A (en) Improvements in or relating to electric carrier current communication systems
GB655193A (en) Improvements in or relating to modulated-pulse multiplex signalling systems
GB581330A (en) Improvements in or relating to means for generating time modulated electrical pulses