GB600148A - Improvements in or relating to electric carrier current communication systems - Google Patents

Improvements in or relating to electric carrier current communication systems

Info

Publication number
GB600148A
GB600148A GB25246/45A GB2524645A GB600148A GB 600148 A GB600148 A GB 600148A GB 25246/45 A GB25246/45 A GB 25246/45A GB 2524645 A GB2524645 A GB 2524645A GB 600148 A GB600148 A GB 600148A
Authority
GB
United Kingdom
Prior art keywords
wave
relating
circuit
communication systems
pulse
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
GB25246/45A
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 GB600148A publication Critical patent/GB600148A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04J—MULTIPLEX COMMUNICATION
    • H04J1/00—Frequency-division multiplex systems
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/06—Receivers
    • H04B1/16—Circuits
    • H04B1/30—Circuits for homodyne or synchrodyne receivers

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Amplitude Modulation (AREA)

Abstract

600,148. Radio signalling pulse modulation. STANDARD TELEPHONES & CABLES, Ltd. Sept. 28, 1945, No. 25246. Convention date, Oct. 28, 1944. Drawings to Specification. [Class 40 (v)] For segregating the carrier component from a signal-modulated carrier wave, the wave is passed through a gate clipper for limitation between predetermined limits, the output being used to control a multivibrator producing a rectangular wave, which is fed to a circuit tuned to the frequency of the unmodulated carrier. A further tuned circuit and gate clipper may precede that already referred to. The original wave may be pulse modulated and the derived wave, preferably after frequency division, used in a pulse demodulating circuit.
GB25246/45A 1944-10-28 1945-09-28 Improvements in or relating to electric carrier current communication systems Expired GB600148A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US600148XA 1944-10-28 1944-10-28

Publications (1)

Publication Number Publication Date
GB600148A true GB600148A (en) 1948-04-01

Family

ID=22026781

Family Applications (1)

Application Number Title Priority Date Filing Date
GB25246/45A Expired GB600148A (en) 1944-10-28 1945-09-28 Improvements in or relating to electric carrier current communication systems

Country Status (2)

Country Link
BE (1) BE473830A (en)
GB (1) GB600148A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2275392A (en) * 1982-08-12 1994-08-24 Secr Defence Signal processing for interference suppression

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2275392A (en) * 1982-08-12 1994-08-24 Secr Defence Signal processing for interference suppression
GB2275392B (en) * 1982-08-12 1995-01-11 Secr Defence Signal processing for interference suppression

Also Published As

Publication number Publication date
BE473830A (en)

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