Patent · US Active

Video signal processing apparatus, video signal processing method, and video signal display apparatus

US8174614B2 · kind B2 · utility

5Cited by
4References
16Claims
0Family size

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Key dates

Filing dateNov 21, 2005
Grant dateMay 8, 2012
Priority date
Expiry dateApr 16, 2029

Classification

  • Technology area (CPC H)Electricity
  • CPC primaryH04N7/012
  • WIPO fieldAudio-visual technology
  • WIPO sectorElectrical engineering

Abstract

A video signal processing apparatus, which can prevent degradation of picture quality in converting an interlaced scan video signal to a progressive scan video signal, includes an interframe correlation detection means (11); an interfield correlation detection means (12); a field resolution determination means (13) which generates a signal (filhv) indicative of a degree of high frequency components existing in a field; a pull-down sequence detection means (14) which generates a telecine detection signal (tci) indicating whether or not an input video signal is any of 2-3 pull-down telecine video signal and 2-2 pull-down telecine video signal and also generates a mixing ratio signal (tcmix) indicative of a mixing ratio used at the time of interpolation processing; an interpolation signal generation means (110) which mixes a plurality of kinds of interpolation signals (Im, It) in accordance with the telecine detection signal (tci) and the mixing ratio signal (tcmix); and a rate doubling conversion means (9) which generates the progressive scan video signal (Prog) from a delayed video signal (R) and an interpolation signal (I).

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.