| 摘要 |
The A/D converter for displaying a monitor scene simultaneously in a main screen of a television comprises a multiplexer (1) for multiplexing analog Y, R-Y, or B-Y signal according to the input of selectors (S0, S1), an buffer (2) for amplifying the output of (1), an A/D converter (3) for converting analog input (Ia) to the n bit digital value, a counter (5) for generating binary pulse, a timing control cct. (6) for generating clock (CKS, CK1-3), and D flip-flops (4a-4c) for generating digital Y, R-Y, and B-Y signals (Y*, R-Y*, B- Y*).
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