Patent ID: 11875713
Assignee: HEFEI XINSHENG OPTOELECTRONICS TECHNOLOGY CO., LTD.
Field: Audio-visual technology (Electrical engineering)
Classification: CPC G  H | IPC G  H

Claim 4:
5. The overcurrent protection circuit according to claim 4, wherein a number of the plurality of gate input signals is x, the signal selection unit includes n stages of selector groups, and a selector group in an i-th stage includes 2(n-i) electors, wherein x is a positive integer greater than or equal to 3, n is a positive integer greater than or equal to 2, and i takes a value in a positive integer set of [1, n] in sequence;
each selector has two input terminals and one output terminal; two input terminals of a selector in a selector group in an (i+1)-th stage are coupled to output terminals of two selectors in the selector group in the i-th stage, respectively;
a selector group in a first stage is configured to acquire the plurality of gate input signals, and each selector in the selector group in the first stage is configured to receive two gate input signals in the plurality of gate input signals, and output a gate input signal with a greater voltage value in the received two gate input signals in the plurality of gate input signals;
the selector group in the (i+1)-th stage is configured to receive gate input signals output by the selector group in the i-th stage, and each selector in the selector group in the (i+1)-th stage is configured to receive two gate input signals in the gate input signals output by the selector group in the i-th stage, and output a gate input signal with a greater voltage value in the received two gate input signals in the gate input signals output by the selector group in the i-th stage;
a selector in a selector group in an n-th stage is configured to receive two gate input signals output by a selector group in an (n−1)-th stage, select a gate input signal with a greater voltage value in the two gate input signals output by the selector group in the (n−1)-th stage, compare a voltage value of the selected gate input signal with the greater voltage value output by the selector group in the (n−1)-th stage with the first preset voltage value, and if the voltage value of the selected gate input signal with the greater voltage value output by the selector group in the (n−1)-th stage is greater than the first preset voltage value, use the selected gate input signal with the greater voltage value output by the selector group in the (n−1)-th stage as the sample gate input signal.