GB479500A - Television scanning means according to the interlaced line-group method - Google Patents

Television scanning means according to the interlaced line-group method

Info

Publication number
GB479500A
GB479500A GB21452/36A GB2145236A GB479500A GB 479500 A GB479500 A GB 479500A GB 21452/36 A GB21452/36 A GB 21452/36A GB 2145236 A GB2145236 A GB 2145236A GB 479500 A GB479500 A GB 479500A
Authority
GB
United Kingdom
Prior art keywords
edge
disc
aug
apertures
television
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
GB21452/36A
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.)
Loewe Opta GmbH
Original Assignee
Loewe Opta GmbH
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 Loewe Opta GmbH filed Critical Loewe Opta GmbH
Publication of GB479500A publication Critical patent/GB479500A/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
    • H04N5/06—Generation of synchronising signals

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Testing, Inspecting, Measuring Of Stereoscopic Televisions And Televisions (AREA)

Abstract

479,500. Television. RADIOAKT.-GES. D. S. LOEWE. Aug. 4, 1936, No. 21452. Convention date, Aug. 6, 1935. [Class 40 (iii)] Relates to a television transmitter utilizing a moving film in conjunction with a Nipkow disc, in which, for interlaced scanning, the disc is provided with two or more spirals of apertures, and in which the line synchronizing impulses are generated by the passage of the apertures across an abnormally bright or dark marginal line defined by the projection of a knife-edge. According to the invention, a separate adjustable edge is provided for each spiral, in order to correct slight optical or mechanical errors. Specifications 465,184 and 472,160 are referred to. The Specification as open to inspection under Sect. 91 also describes alternative arrangements in which (1) " the image points are so disposed on the disc that the sectional arc described by the same is constant independently of the distance from the central point." In this case a single straight " starting edge '' is applied to the edge of the image ; (2) the '' slotted rim '' method of producing synchronizing impulses may be used, with non-uniform spacing between the slots. This subject-matter does not appear in the Specification as accepted.
GB21452/36A 1935-08-06 1936-08-04 Television scanning means according to the interlaced line-group method Expired GB479500A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE479500X 1935-08-06

Publications (1)

Publication Number Publication Date
GB479500A true GB479500A (en) 1938-02-04

Family

ID=6542423

Family Applications (1)

Application Number Title Priority Date Filing Date
GB21452/36A Expired GB479500A (en) 1935-08-06 1936-08-04 Television scanning means according to the interlaced line-group method

Country Status (1)

Country Link
GB (1) GB479500A (en)

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