GB437731A - Improvements in and relating to wireless and like apparatus for the reception of modulated carrier oscillations - Google Patents

Improvements in and relating to wireless and like apparatus for the reception of modulated carrier oscillations

Info

Publication number
GB437731A
GB437731A GB1037834A GB1037834A GB437731A GB 437731 A GB437731 A GB 437731A GB 1037834 A GB1037834 A GB 1037834A GB 1037834 A GB1037834 A GB 1037834A GB 437731 A GB437731 A GB 437731A
Authority
GB
United Kingdom
Prior art keywords
modulated carrier
wireless
relating
reception
maxima
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
GB1037834A
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.)
EMI Ltd
Electrical and Musical Industries Ltd
Original Assignee
EMI Ltd
Electrical and Musical Industries 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
Priority to FR743694D priority Critical patent/FR743694A/fr
Priority to BE393258D priority patent/BE393258A/xx
Priority to GB32323/32A priority patent/GB392456A/en
Application filed by EMI Ltd, Electrical and Musical Industries Ltd filed Critical EMI Ltd
Priority to GB1037834A priority patent/GB437731A/en
Publication of GB437731A publication Critical patent/GB437731A/en
Priority to US164129A priority patent/US2195056A/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B19/00—Single-purpose machines or devices for particular grinding operations not covered by any other main group
    • B24B19/08—Single-purpose machines or devices for particular grinding operations not covered by any other main group for grinding non-circular cross-sections, e.g. shafts of elliptical or polygonal cross-section
    • B24B19/11—Single-purpose machines or devices for particular grinding operations not covered by any other main group for grinding non-circular cross-sections, e.g. shafts of elliptical or polygonal cross-section for grinding the circumferential surface of rings, e.g. piston rings
    • 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
    • H04B1/26—Circuits for superheterodyne receivers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00—Details of television systems
    • H04N5/44—Receiver circuitry for the reception of television signals according to analogue transmission standards
    • H04N5/60—Receiver circuitry for the reception of television signals according to analogue transmission standards for the sound signals
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N7/00—Television systems
    • H04N7/06—Systems for the simultaneous transmission of one television signal, i.e. both picture and sound, by more than one carrier

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Multimedia (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Mechanical Engineering (AREA)
  • Superheterodyne Receivers (AREA)
  • Circuits Of Receivers In General (AREA)

Abstract

437,731. Diplex wireless signalling. ELECTRIC & MUSICAL INDUSTRIES, Ltd., Blyth Road, Hayes, Middlesex, and AGATE, C. S., 33, Dornton Road, South Croydon. April 5, 1934, No. 10378. Addition to 392,456. [Class 40 (v)] Two differently modulated carrier waves of different frequency are received in a circuit 1, 2, having two maxima in its frequencyresponse characteristic, and the frequencies in the neighbourhoods of the two maxima are used separately. The circuit 1, 2 is a band-pass filter in the input of a first detector 3, which co-operates with a local oscillator 10. Two separate intermediate-frequency amplifiers 14, 16 are used for the two sets of signals.
GB1037834A 1931-12-26 1934-04-05 Improvements in and relating to wireless and like apparatus for the reception of modulated carrier oscillations Expired GB437731A (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
FR743694D FR743694A (en) 1931-12-26
BE393258D BE393258A (en) 1931-12-26
GB32323/32A GB392456A (en) 1931-12-26 1932-11-15 Improvements in or relating to radio television and like receiving systems
GB1037834A GB437731A (en) 1934-04-05 1934-04-05 Improvements in and relating to wireless and like apparatus for the reception of modulated carrier oscillations
US164129A US2195056A (en) 1931-12-26 1937-09-16 Lapping apparatus and method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1037834A GB437731A (en) 1934-04-05 1934-04-05 Improvements in and relating to wireless and like apparatus for the reception of modulated carrier oscillations

Publications (1)

Publication Number Publication Date
GB437731A true GB437731A (en) 1935-11-05

Family

ID=9966733

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1037834A Expired GB437731A (en) 1931-12-26 1934-04-05 Improvements in and relating to wireless and like apparatus for the reception of modulated carrier oscillations

Country Status (1)

Country Link
GB (1) GB437731A (en)

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