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GB722302A - Improvement in and relating to electric communication systems - Google Patents

Improvement in and relating to electric communication systems

Info

Publication number
GB722302A
GB722302A GB2935752A GB2935752A GB722302A GB 722302 A GB722302 A GB 722302A GB 2935752 A GB2935752 A GB 2935752A GB 2935752 A GB2935752 A GB 2935752A GB 722302 A GB722302 A GB 722302A
Authority
GB
United Kingdom
Prior art keywords
relating
improvement
communication systems
carrier
electric communication
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
GB2935752A
Inventor
Kenneth Whiteley Harrison
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.)
Telephone Manufacturing Co Ltd
Original Assignee
Telephone Manufacturing Co Ltd
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 Telephone Manufacturing Co Ltd filed Critical Telephone Manufacturing Co Ltd
Priority to GB2935752A priority Critical patent/GB722302A/en
Publication of GB722302A publication Critical patent/GB722302A/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

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Radio Relay Systems (AREA)

Abstract

722,302. Telephone transmission systems. TELEPHONE MANUFACTURING CO., Ltd. Sept. 25, 1953 [Nov. 20, 1952], No. 29357/52. Class 40 (4). In a suppressed carrier system in which the carrier is transmitted for the purpose of signalling, the signal detector is connected to the output of the receive demodulator and tuned to twice the carrier frequency. Transmission of the carrier may be effected either by unbalancing the transmit modulator or by injection on the line side of this modulator.
GB2935752A 1952-11-20 1952-11-20 Improvement in and relating to electric communication systems Expired GB722302A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB2935752A GB722302A (en) 1952-11-20 1952-11-20 Improvement in and relating to electric communication systems

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2935752A GB722302A (en) 1952-11-20 1952-11-20 Improvement in and relating to electric communication systems

Publications (1)

Publication Number Publication Date
GB722302A true GB722302A (en) 1955-01-19

Family

ID=10290238

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2935752A Expired GB722302A (en) 1952-11-20 1952-11-20 Improvement in and relating to electric communication systems

Country Status (1)

Country Link
GB (1) GB722302A (en)

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