Patent ID: 11942020
Assignee: HKC CORPORATION LIMITED
Field: Audio-visual technology (Electrical engineering)
Classification: CPC G | IPC G

Claim 12:
13. A driving circuit, comprising:
an input circuit configured to output a control signal upon receiving a trigger signal;
a first output circuit comprising a control terminal connected to an output terminal of the input circuit, and configured to output a first output signal upon receiving the control signal and a first input signal;
a second output circuit comprising a control terminal connected to the output terminal of the input circuit and configured to output a second output signal upon receiving the control signal and a second input signal; and
a pull-down circuit comprising:
an input terminal connected to the output terminal of the input circuit, an output terminal of the first output circuit and an output terminal of the second output circuit; and
an output terminal connected to a first low level voltage and configured to pull down the control signal, the first output signal and the second output signal to a low level when a pull-down control signal is at a high level, and stop pulling down the control signal, the first output signal and the second output signal when the trigger signal or the control signal is at the high level;

wherein the pull-down circuit further comprises:
a pull-down holding circuit comprising:
a fifth switching transistor comprising:
a control terminal configured to receive the pull-down control signal;
an input terminal connected to the control terminal; and
an output terminal; and

a sixth switching transistor comprising:
an input terminal connected to the output terminal of the fifth switching transistor;
a control terminal connected to the output terminal of the input circuit; and
an output terminal connected to the first low level voltage;

a seventh switching transistor comprising:
a control terminal connected to the output terminal of the fifth switching transistor;
an input terminal configured to receive the pull-down control signal; and
an output terminal configured to output the pull-down signal; and

an eighth switching transistor comprising:
a control terminal configured to receive the control signal;
 an input terminal connected to the output terminal of the seventh switching transistor; and

a ninth switching transistor comprising:
a control terminal configured to receive the trigger signal;
 an input terminal connected to the output terminal of the seventh switching transistor; and
an output terminal connected to the first low level voltage.