CPC H04N 25/75 (2023.01) [H04N 25/709 (2023.01); H04N 25/745 (2023.01); H04N 25/772 (2023.01)] | 13 Claims |
1. A ramp signal generator comprising:
a resistance circuit coupled to a first voltage terminal and an output terminal and suitable for adjusting, according to a plurality of control signals, a resistance value applied to the output terminal, a ramp signal being output through the output terminal; and
a current circuit coupled to a second voltage terminal and the output terminal and suitable for adjusting, according to a clock signal, a current level applied to the output terminal and a change rate of the current level,
wherein the plurality of control signals are generated according to an analog gain having a predetermined multiple range, and
wherein the clock signal has a first frequency when the analog gain has a first range within the predetermined multiple range and has a second frequency when the analog gain has a second range within the predetermined multiple range.
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