GB756678A - Improvements in or relating to synchronisation circuit arrangements for use in television receivers - Google Patents

Improvements in or relating to synchronisation circuit arrangements for use in television receivers

Info

Publication number
GB756678A
GB756678A GB2491053A GB2491053A GB756678A GB 756678 A GB756678 A GB 756678A GB 2491053 A GB2491053 A GB 2491053A GB 2491053 A GB2491053 A GB 2491053A GB 756678 A GB756678 A GB 756678A
Authority
GB
United Kingdom
Prior art keywords
terminal
capacitor
sync
pentode
time
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
GB2491053A
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to GB2491053A priority Critical patent/GB756678A/en
Publication of GB756678A publication Critical patent/GB756678A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00—Details of television systems
    • H04N5/04—Synchronising
    • H04N5/12—Devices in which the synchronising signals are only operative if a phase difference occurs between synchronising and synchronised scanning devices, e.g. flywheel synchronising
    • H04N5/126—Devices in which the synchronising signals are only operative if a phase difference occurs between synchronising and synchronised scanning devices, e.g. flywheel synchronising whereby the synchronisation signal indirectly commands a frequency generator

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Synchronizing For Television (AREA)

Abstract

756,678. Automatic frequency and phase control. COVILL, D. H. Aug. 12, 1954 [Sept. 9, 1953], No. 24910/53. Class 38 (4). The voltage controlling the frequency and phase of a line time-base oscillator, in a television receiver, is derived from a capacitor one terminal of which is connected to a point of fixed potential during each received sync. pulse and its other terminal being at a potential dependent upon the generator output voltage. The control voltage is derived from said one terminal through a low-pass filter and is of such sense that the sync. pulses occur at a predetermined point in the fly-back. The time-base generator 2 is coupled to a cathode follower 3, the cathode of which is connected to one terminal of the capacitor 4. The anode of pentode 1, which becomes conducting during the line sync. period of the television signal applied to its grid, is connected to the other terminal of capacitor 4. A resistance 5 shunting capacitor 4 completes the D.C. anode supply circuit of pentode 1 through valve 3. The control voltage developed across the capacitor 4 is fed to the generator 2 through a low-pass filter 6 ... 9. Frame sync. pulses are developed at terminal 10 of the screen-grid circuit of pentode 1 by the time-constant circuit 12, 13.
GB2491053A 1953-09-09 1953-09-09 Improvements in or relating to synchronisation circuit arrangements for use in television receivers Expired GB756678A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB2491053A GB756678A (en) 1953-09-09 1953-09-09 Improvements in or relating to synchronisation circuit arrangements for use in television receivers

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2491053A GB756678A (en) 1953-09-09 1953-09-09 Improvements in or relating to synchronisation circuit arrangements for use in television receivers

Publications (1)

Publication Number Publication Date
GB756678A true GB756678A (en) 1956-09-05

Family

ID=10219192

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2491053A Expired GB756678A (en) 1953-09-09 1953-09-09 Improvements in or relating to synchronisation circuit arrangements for use in television receivers

Country Status (1)

Country Link
GB (1) GB756678A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11041511B2 (en) * 2018-04-05 2021-06-22 Caterpillar Global Mining Llc Hydraulic cylinder service life improvement

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11041511B2 (en) * 2018-04-05 2021-06-22 Caterpillar Global Mining Llc Hydraulic cylinder service life improvement

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