GB1499697A - Narrow band communication system - Google Patents

Narrow band communication system

Info

Publication number
GB1499697A
GB1499697A GB1566576A GB1566576A GB1499697A GB 1499697 A GB1499697 A GB 1499697A GB 1566576 A GB1566576 A GB 1566576A GB 1566576 A GB1566576 A GB 1566576A GB 1499697 A GB1499697 A GB 1499697A
Authority
GB
United Kingdom
Prior art keywords
frequency
transmitted
produce
harmonic
baseband
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
GB1566576A
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.)
International Standard Electric Corp
Original Assignee
International Standard Electric Corp
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 International Standard Electric Corp filed Critical International Standard Electric Corp
Priority to US05/773,694 priority Critical patent/US4129692A/en
Publication of GB1499697A publication Critical patent/GB1499697A/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • H04B1/66—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 for reducing bandwidth of signals; for improving efficiency of transmission
    • H04B1/667—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 for reducing bandwidth of signals; for improving efficiency of transmission using a division in frequency subbands

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Noise Elimination (AREA)
  • Telephone Function (AREA)
  • Transmitters (AREA)
GB1566576A 1975-04-16 1976-04-15 Narrow band communication system Expired GB1499697A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US05/773,694 US4129692A (en) 1976-03-11 1977-03-02 Electric storage batteries

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19752516743 DE2516743C2 (de) 1975-04-16 1975-04-16 Empfänger für ein System zur elektrischen Nachrichtenübertragung mit herabgesetzter Bandbreite

Publications (1)

Publication Number Publication Date
GB1499697A true GB1499697A (en) 1978-02-01

Family

ID=5944124

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1566576A Expired GB1499697A (en) 1975-04-16 1976-04-15 Narrow band communication system

Country Status (5)

Country Link
BR (1) BR7602362A (enExample)
CH (1) CH607469A5 (enExample)
DE (1) DE2516743C2 (enExample)
FR (1) FR2308256A1 (enExample)
GB (1) GB1499697A (enExample)

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1079118B (de) * 1958-04-11 1960-04-07 Siemens Ag Verfahren zur elektrischen Nachrichtenuebertragung unter Frequenzbandpressung
NL245178A (enExample) * 1958-11-17
NL272809A (enExample) * 1960-12-27

Also Published As

Publication number Publication date
CH607469A5 (enExample) 1978-12-29
DE2516743C2 (de) 1984-01-19
FR2308256A1 (fr) 1976-11-12
BR7602362A (pt) 1976-10-12
FR2308256B3 (enExample) 1979-01-12
DE2516743A1 (de) 1978-03-16

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Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee