| 摘要 |
<p>INTERLACE TO NON-INTERLACE SCAN CONVERTER FOR RGB FORMAT INPUT SIGNALS A speed-up memory (22,24,26), converts interlaced RGB input signals to double line-rate (progressive scan) form. A vertical detail signal (S3) is derived from the RGB input signals before or after speed-up and a vertical peaking signal (S4) is derived from the detail signal. During the first read operation of the speed-up memory both signals (S3,S4) are added (84,86 with 32,42,52) to the speeded-up signals to effect a preshoot of the resultant signal, and during the second speed-up memory read operation only the peaking signal (S4) is added (32,42,52) to affect an overshoot of the resultant signals whereby alternate lines of the converted RGB signals exhibit enhanced vertical detail.</p> |
