Importance

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Abstract

A counter, an analog-to-digital converter, and a method for reading out image signals; the counter comprises N cascaded counting units, each of which comprises a writable D flip-flop, which has a clock input, a data input, a Q output, a Q-bar output, a control input, and a write input; the clock input of the writable D flip-flop of each counting unit is connected to the Q-bar or Q output of the writable D flip-flop of a previous counting unit, except that the clock input of the writable D flip-flop of a first counting unit of the N cascaded counting units receives a clock signal; the Q-bar output of each writable D flip-flop is connected to the data input of the same writable D flip-flop, each Q output generates a counting result, each control input receives a control signal, and each write input receives a write signal.

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First Claim