GB625067A - Improvements in or relating to call-signal reception in carrier-wave telephony systems - Google Patents

Improvements in or relating to call-signal reception in carrier-wave telephony systems

Info

Publication number
GB625067A
GB625067A GB34730/46A GB3473046A GB625067A GB 625067 A GB625067 A GB 625067A GB 34730/46 A GB34730/46 A GB 34730/46A GB 3473046 A GB3473046 A GB 3473046A GB 625067 A GB625067 A GB 625067A
Authority
GB
United Kingdom
Prior art keywords
call
carrier
rectifiers
bias
oscillations
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
GB34730/46A
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.)
Koninklijke Philips NV
Original Assignee
Philips Gloeilampenfabrieken NV
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 Philips Gloeilampenfabrieken NV filed Critical Philips Gloeilampenfabrieken NV
Publication of GB625067A publication Critical patent/GB625067A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04J—MULTIPLEX COMMUNICATION
    • H04J1/00—Frequency-division multiplex systems
    • H04J1/02—Details
    • H04J1/14—Arrangements providing for calling or supervisory signals
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03C—MODULATION
    • H03C1/00—Amplitude modulation
    • H03C1/52—Modulators in which carrier or one sideband is wholly or partially suppressed
    • H03C1/54—Balanced modulators, e.g. bridge type, ring type or double balanced type
    • H03C1/56—Balanced modulators, e.g. bridge type, ring type or double balanced type comprising variable two-pole elements only
    • H03C1/58—Balanced modulators, e.g. bridge type, ring type or double balanced type comprising variable two-pole elements only comprising diodes
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04J—MULTIPLEX COMMUNICATION
    • H04J1/00—Frequency-division multiplex systems
    • H04J1/02—Details
    • H04J1/08—Arrangements for combining channels
    • H04J1/085—Terminal station; Combined modulator and demodulator circuits

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
  • Transceivers (AREA)
GB34730/46A 1943-06-12 1946-11-22 Improvements in or relating to call-signal reception in carrier-wave telephony systems Expired GB625067A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL242056X 1943-06-12

Publications (1)

Publication Number Publication Date
GB625067A true GB625067A (en) 1949-06-21

Family

ID=19780619

Family Applications (1)

Application Number Title Priority Date Filing Date
GB34730/46A Expired GB625067A (en) 1943-06-12 1946-11-22 Improvements in or relating to call-signal reception in carrier-wave telephony systems

Country Status (6)

Country Link
BE (1) BE456250A (enrdf_load_stackoverflow)
CH (1) CH242056A (enrdf_load_stackoverflow)
DE (1) DE885725C (enrdf_load_stackoverflow)
FR (1) FR904977A (enrdf_load_stackoverflow)
GB (1) GB625067A (enrdf_load_stackoverflow)
NL (1) NL70088C (enrdf_load_stackoverflow)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1067105B (enrdf_load_stackoverflow) * 1954-03-11 1959-10-15

Also Published As

Publication number Publication date
BE456250A (enrdf_load_stackoverflow)
DE885725C (de) 1953-08-06
FR904977A (fr) 1945-11-21
NL70088C (enrdf_load_stackoverflow)
CH242056A (de) 1946-04-15

Similar Documents

Publication Publication Date Title
GB472586A (en) Improvements in or relating to radio communication systems
GB625067A (en) Improvements in or relating to call-signal reception in carrier-wave telephony systems
GB639926A (en) Television receiver
US2948808A (en) Single sideband communication system
GB880673A (en) Improvements in or relating to diversity radio receiving arrangements
GB644989A (en) Improvements in automatic gain control arrangements
GB958634A (en) An ultra-short wave transmitter-receiver
GB627579A (en) Improvements in or relating to thermionic valve circuits
GB661554A (en) High frequency pre-emphasis for pulse code modulation
GB504711A (en) Improvements in signal-receivers for carrier-telephony systems
GB817713A (en) Improvements relating to radio relays
GB1030016A (en) Improvements in or relating to systems for relaying radio signals
GB636375A (en) Improvements in or relating to circuits for receiving frequency-modulated oscillations
GB882135A (en) Improvements in or relating to doppler radar systems
GB847626A (en) Improvements in or relating to single sideband equipment for speech transmission
GB571580A (en) Frequency modulation detector
GB656295A (enrdf_load_stackoverflow)
GB792350A (en) Improvements in or relating to single-sideband radio receivers
GB639686A (en) Improvements relating to tuning means for mixed radio receivers adapted for amplitude modulation or frequency modulation
GB952033A (en) Improvements in transmission systems and transmitters and receivers therefor
GB620010A (enrdf_load_stackoverflow)
GB613902A (en) Improvements in and relating to repeater systems for high frequency electric waves
GB578716A (en) Improvements relating to wireless receiving apparatus
GB887727A (en) Improvements in or relating to carrier systems
GB631350A (en) Improvements in or relating to electric signal amplitude limiter circuits in radio receivers