GB515302A - Improvements in and relating to television and like systems - Google Patents

Improvements in and relating to television and like systems

Info

Publication number
GB515302A
GB515302A GB12119/38A GB1211938A GB515302A GB 515302 A GB515302 A GB 515302A GB 12119/38 A GB12119/38 A GB 12119/38A GB 1211938 A GB1211938 A GB 1211938A GB 515302 A GB515302 A GB 515302A
Authority
GB
United Kingdom
Prior art keywords
impulses
signals
synchronizing
television
produce
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
GB12119/38A
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.)
Pye Electronic Products Ltd
Original Assignee
Pye 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 Pye Ltd filed Critical Pye Ltd
Priority to GB12119/38A priority Critical patent/GB515302A/en
Priority to FR853306D priority patent/FR853306A/en
Priority to US269229A priority patent/US2295346A/en
Publication of GB515302A publication Critical patent/GB515302A/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

Landscapes

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

Abstract

515,302. Television. PYE, Ltd., JONES, W., and EDWARDS, B. J. April 22, 1938, No. 12119. [Class 40 (iii)] Mixed picture and synchronizing signals are applied at 1 to a resistance-capacity combination R1, C1 having a time constant such as to produce from the long frame synchronizing signals impulses of greater amplitude than those produced by the short line synchronizing signals and the image signals, the impulses being applied to a valve VI having a characteristic curve including an extended horizontal portion so that only frame signals produce a substantial change in the anode current. The synchronizing impulses may be transmitted in the blackerthan-black or in the whiter-than-white sense. Specification 472,923 is referred to.
GB12119/38A 1938-04-22 1938-04-22 Improvements in and relating to television and like systems Expired GB515302A (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
GB12119/38A GB515302A (en) 1938-04-22 1938-04-22 Improvements in and relating to television and like systems
FR853306D FR853306A (en) 1938-04-22 1939-04-21 Improvements to television systems and the like
US269229A US2295346A (en) 1938-04-22 1939-04-21 Television and like system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB12119/38A GB515302A (en) 1938-04-22 1938-04-22 Improvements in and relating to television and like systems

Publications (1)

Publication Number Publication Date
GB515302A true GB515302A (en) 1939-12-01

Family

ID=9998714

Family Applications (1)

Application Number Title Priority Date Filing Date
GB12119/38A Expired GB515302A (en) 1938-04-22 1938-04-22 Improvements in and relating to television and like systems

Country Status (3)

Country Link
US (1) US2295346A (en)
FR (1) FR853306A (en)
GB (1) GB515302A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2921131A (en) * 1955-11-21 1960-01-12 Philco Corp Television receivers

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2566763A (en) * 1946-09-28 1951-09-04 Motorola Inc Synchronizing signal separator and keyed automatic gain control
US2652450A (en) * 1948-05-29 1953-09-15 Rca Corp Sync separation and automatic gain control
US2539374A (en) * 1949-07-23 1951-01-23 Gen Precision Lab Inc Vertical synchronization pulse separation circuit
US2950342A (en) * 1954-06-28 1960-08-23 Gen Electric Signal separation circuits
US3001014A (en) * 1958-07-14 1961-09-19 Zenith Radio Corp Synchronizing-signal separator
US3592963A (en) * 1966-05-02 1971-07-13 Xerox Corp Facsimile transmitter
JPS5129696Y1 (en) * 1974-12-12 1976-07-27

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2921131A (en) * 1955-11-21 1960-01-12 Philco Corp Television receivers

Also Published As

Publication number Publication date
US2295346A (en) 1942-09-08
FR853306A (en) 1940-03-15

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