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GB2014012A - Film Scanner - Google Patents

Film Scanner

Info

Publication number
GB2014012A
GB2014012A GB7909869A GB7909869A GB2014012A GB 2014012 A GB2014012 A GB 2014012A GB 7909869 A GB7909869 A GB 7909869A GB 7909869 A GB7909869 A GB 7909869A GB 2014012 A GB2014012 A GB 2014012A
Authority
GB
United Kingdom
Prior art keywords
line
samples
scans
versions
film
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.)
Granted
Application number
GB7909869A
Other versions
GB2014012B (en
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.)
Kodak Ltd
Original Assignee
Kodak 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 Kodak Ltd filed Critical Kodak Ltd
Priority to GB7909869A priority Critical patent/GB2014012B/en
Publication of GB2014012A publication Critical patent/GB2014012A/en
Application granted granted Critical
Publication of GB2014012B publication Critical patent/GB2014012B/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
    • H04N5/222—Studio circuitry; Studio devices; Studio equipment
    • H04N5/253—Picture signal generating by scanning motion picture films or slide opaques, e.g. for telecine

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Details Of Television Scanning (AREA)
  • Facsimile Scanning Arrangements (AREA)

Abstract

In continuous motion film scanning apparatus of the flying spot type for producing video signals each film frame is scanned at least twice, successive scans being interlaced vertically. In proper interlacing, e.g. due to film shrinkage, will be apparent in the displayed image. The apparatus disclosed is arranged to produce a correction voltage for adjusting the vertical shift of one of the scans relative to the other. To obtain this voltage the video signal is a sampled line-by-line during the first and second scans of a frame, and the samples for the second scan are compared 17-21 with two versions of the samples for the first scan obtained from delay lines 15 and 16, these versions being delayed by equal time periods, e.g. half a line period, more and less than a complete field period. Cyclic operation of a switch 10 selects the position of the samples in each line. <IMAGE>
GB7909869A 1977-12-21 1979-03-21 Film scanner Expired GB2014012B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB7909869A GB2014012B (en) 1977-12-21 1979-03-21 Film scanner

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB5325677 1977-12-21
GB7909869A GB2014012B (en) 1977-12-21 1979-03-21 Film scanner

Publications (2)

Publication Number Publication Date
GB2014012A true GB2014012A (en) 1979-08-15
GB2014012B GB2014012B (en) 1982-04-28

Family

ID=26267225

Family Applications (1)

Application Number Title Priority Date Filing Date
GB7909869A Expired GB2014012B (en) 1977-12-21 1979-03-21 Film scanner

Country Status (1)

Country Link
GB (1) GB2014012B (en)

Also Published As

Publication number Publication date
GB2014012B (en) 1982-04-28

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Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee