Scanning line interpolation circuit for television signal

Details Scanning line interpolation circuit for television signal Scanning line interpolation circuit for television signal

H - Electricity

04

N

350/100, 350/36

H04N 7/01 (2006.01) H04N 5/44 (2006.01)

Patent

CA 1228916

ABSTRACT OF THE DISCLOSURE Disclosed is a scanning line interpolation circuit for interpolating scanning lines of an interlaced television signal to thereby obtain a television signal having the doubled number of scanning lines, in which, in order to improve the quality of the reproduced television picture, the interpolation circuit is constituted by a spatio- temporal filter and a time compression circuit, and in the domain of the spatial vertical frequency and the time frequency, the total frequency characteristic of the spatio- temporal filter and the time compression circuit is set such that the response characteristic becomes zero at the vertical frequency and the time frequency of the scanning frequency of the interlaced television signal.

471448

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