JPS57207482A - Scanning converter for television receiver - Google Patents

Scanning converter for television receiver

Info

Publication number
JPS57207482A
JPS57207482A JP56092310A JP9231081A JPS57207482A JP S57207482 A JPS57207482 A JP S57207482A JP 56092310 A JP56092310 A JP 56092310A JP 9231081 A JP9231081 A JP 9231081A JP S57207482 A JPS57207482 A JP S57207482A
Authority
JP
Japan
Prior art keywords
horizontal
readout
signal
video signal
vertical synchronizing
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.)
Pending
Application number
JP56092310A
Other languages
Japanese (ja)
Inventor
Hitoshi Maekawa
Michitaka Osawa
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.)
Hitachi Ltd
Original Assignee
Hitachi 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 Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP56092310A priority Critical patent/JPS57207482A/en
Publication of JPS57207482A publication Critical patent/JPS57207482A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N7/00—Television systems
    • H04N7/01—Conversion of standards, e.g. involving analogue television standards or digital television standards processed at pixel level

Landscapes

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

Abstract

PURPOSE:To perform complete and stable interlaced scanning, by obtaining a video signal matched to a multiple of a horizontal synchronizing signal at one scanning period through the use of horizontal and vertical synchronizing signals. CONSTITUTION:Horizontal and vertical synchronizing signals fH1 and fV1 of an NTSC system are inputted from terminals (a) and (b) respectively and a video signal is inputted from a terminal (c). The video signal is digitized with a clock Dck1 of a generator 1 at an A/D converter 2, controlled 3 for write, and the 1st and 2nd field information is stored respectively in #1FDM4 and #2FDM5. The readout from the #1FDM4 is made according to the trailing signal of a vertical synchronizing signal fV2 delayed for a prescribed time with the designation of a readout address A'. The readout from the #2FDM5 is made with a delay of 1/fH2 period (where fH2 is a horizontal synchronizing signal m-frequency- division of a clock Dck2 of the generator 1) through the designation from the readout address B'.
JP56092310A 1981-06-17 1981-06-17 Scanning converter for television receiver Pending JPS57207482A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP56092310A JPS57207482A (en) 1981-06-17 1981-06-17 Scanning converter for television receiver

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56092310A JPS57207482A (en) 1981-06-17 1981-06-17 Scanning converter for television receiver

Publications (1)

Publication Number Publication Date
JPS57207482A true JPS57207482A (en) 1982-12-20

Family

ID=14050822

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56092310A Pending JPS57207482A (en) 1981-06-17 1981-06-17 Scanning converter for television receiver

Country Status (1)

Country Link
JP (1) JPS57207482A (en)

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