초록 ▼

A field comb filter for separating luminance signal from NTSC composite video additively combines signals separated by 263 horizontal lines. Vertical detail is restored and motion compensation provided by subtractively combining signal separated by 262 horizontal lines and adding the difference to t

A field comb filter for separating luminance signal from NTSC composite video additively combines signals separated by 263 horizontal lines. Vertical detail is restored and motion compensation provided by subtractively combining signal separated by 262 horizontal lines and adding the difference to the separated luminance signal.

대표청구항 ▼

Apparatus for separating luminance signal from composite video signal including chrominance and luminance signal components, comprising: an input terminal for applying composite video signal; signal delaying means having an input port coupled to said input terminal and having first and second output

Apparatus for separating luminance signal from composite video signal including chrominance and luminance signal components, comprising: an input terminal for applying composite video signal; signal delaying means having an input port coupled to said input terminal and having first and second output taps at which signals delayed by substantially one field period and one horizontal line period less than said substantially one field period are provided; first signal combining means having first and second input ports coupled to said input terminal and said first tap respectively for additively combining signals applied thereto; second signal combining means having first and second input ports coupled to said input terminal and said second tap for subtractively combining signals applied thereto; and third signal combining means having first and second input ports respectively coupled to said first and second signal combining means for additively combining signals produced thereby, and having an output port at which said luminance signal is produced.