GB514554A - Improvements in or relating to television and like systems - Google Patents

Improvements in or relating to television and like systems

Info

Publication number
GB514554A
GB514554A GB1387938A GB1387938A GB514554A GB 514554 A GB514554 A GB 514554A GB 1387938 A GB1387938 A GB 1387938A GB 1387938 A GB1387938 A GB 1387938A GB 514554 A GB514554 A GB 514554A
Authority
GB
United Kingdom
Prior art keywords
signals
harmonic
television
added
component
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
GB1387938A
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.)
THOMAS CAYTON NUTTALL
Baird Television Ltd
Original Assignee
THOMAS CAYTON NUTTALL
Baird Television 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 THOMAS CAYTON NUTTALL, Baird Television Ltd filed Critical THOMAS CAYTON NUTTALL
Priority to GB1387938A priority Critical patent/GB514554A/en
Priority to DEF86761D priority patent/DE731663C/en
Publication of GB514554A publication Critical patent/GB514554A/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
    • H04N5/08—Separation of synchronising signals from picture signals
    • H04N5/10—Separation of line synchronising signal from frame synchronising signal or vice versa

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Measurement Of Radiation (AREA)
  • Television Systems (AREA)

Abstract

514,554. Television. BAIRD TELEVISION, Ltd., and NUTTALL, T. C. May 10, 1938, No. 13879. [Class 40 (iii)] A component of frequency equal to that of line-synchronising signals 1 or a harmonic is added to mixed synchronising signals 1, 2 with such amplitude and phase that the linesynchronising signals remain outside the range 4 of a subsequent amplitude filter for obtaining framing signals. The added component may be selected from the received synchronising signals by a tuned filter, Fig. 6 (not shown), or a harmonic may be derived from a local linefrequency oscillator, Fig. 7 (not shown). For straight sequential scanning the added component has the line frequency. For double intercalated scanning the added component is the second harmonic.
GB1387938A 1938-05-10 1938-05-10 Improvements in or relating to television and like systems Expired GB514554A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
GB1387938A GB514554A (en) 1938-05-10 1938-05-10 Improvements in or relating to television and like systems
DEF86761D DE731663C (en) 1938-05-10 1939-05-11 Method for separating the pulses of the lower frequency from a pulse train consisting of pulses of higher and lower basic frequency

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1387938A GB514554A (en) 1938-05-10 1938-05-10 Improvements in or relating to television and like systems

Publications (1)

Publication Number Publication Date
GB514554A true GB514554A (en) 1939-11-13

Family

ID=10031019

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1387938A Expired GB514554A (en) 1938-05-10 1938-05-10 Improvements in or relating to television and like systems

Country Status (2)

Country Link
DE (1) DE731663C (en)
GB (1) GB514554A (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2761010A (en) * 1951-10-20 1956-08-28 Zenith Radio Corp Vertical synchronizing pulse selector

Also Published As

Publication number Publication date
DE731663C (en) 1943-02-12

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