Granted Patent B2

US 12,374,213 · App. 17/711,041 · Granted Jul 29, 2025

Inventor: Yongjin Luo (Shanghai, CN)

Assignee: Shanghai Yaohuo Microelectronics Co., Ltd.

G08C19/10G08C13/00

Abstract

Claims (96)

1. A signal transmission circuit, comprising N signal transmission paths; each signal transmission path comprising two signal transmission terminals and a path switch connected between the two signal transmission terminals, and N≥1; wherein

the signal transmission circuit further comprises a boost control module and a first feedback module;

a first terminal of the boost control module is connected to an input voltage, a second terminal of the boost control module is connected to the first feedback module, and a third terminal of the boost control module is directly or indirectly connected to a control terminal of the path switch; and the first feedback module is connected to M signal transmission terminals, wherein M≤2N;

the first feedback module is configured to feed back a voltage to be superimposed to the boost control module, and the voltage to be superimposed is adapted to the maximum voltage among voltages of the M signal transmission terminals;

the boost control module is configured to boost the input voltage and output a target signal through a third terminal of the boost control module to drive the path switch into a first state by using the target signal when the input voltage is at a high level, wherein a voltage of the target signal is matched to the sum of a boosted voltage of the input voltage and the voltage to be superimposed, and the first state is an on state or an off state;

wherein the maximum voltage is higher than the voltage to be superimposed, and the difference between the maximum voltage and the voltage to be superimposed is a fixed value;

wherein the first feedback module comprises M diodes and a feedback capacitor;

wherein an anode of each diode is connected to a corresponding signal transmission terminal, cathodes of the M diodes are short circuited together and then connected to a first terminal of the feedback capacitor, the first terminal of the feedback capacitor is connected to the second terminal of the boost control module, and a second terminal of the feedback capacitor is grounded.

2. The signal transmission circuit according to claim 1 , further comprising a driver module, the driver module comprises N first drive switches; wherein

a first terminal of each first drive switch is connected to the third terminal of the boost control module, a second terminal of the each first drive switch is connected to a path switch in a corresponding signal transmission path, and the each first drive switch is kept on and current is matched;

the control terminal of the path switch is connected with a path capacitor; when a first drive switch is turned on, a corresponding path capacitor can be charged by current from the first drive switch.

3. The signal transmission circuit according to claim 1 , further comprising a driver module, the driver module comprises N second drive switches; wherein

a first terminal of each second drive switch is connected to a control terminal of a path switch in a corresponding signal transmission path, and a second terminal of the each second drive switch is grounded;

the each second drive switch is configured to turn on when the input voltage is at a low level to drive a path switch in a corresponding signal transmission path into a second state;

if the first state is an on state, the second state is an off state; and

if the first state is an off state, the second state is an on state.

4. A signal transmission circuit, comprising N signal transmission paths; each signal transmission path comprising two signal transmission terminals and a path switch connected between the two signal transmission terminals, and N≥1; wherein

the signal transmission circuit further comprises a boost control module and a first feedback module;

a first terminal of the boost control module is connected to an input voltage, a second terminal of the boost control module is connected to the first feedback module, and a third terminal of the boost control module is directly or indirectly connected to a control terminal of the path switch; and the first feedback module is connected to M signal transmission terminals, wherein M≤2N;

the first feedback module is configured to feed back a voltage to be superimposed to the boost control module, and the voltage to be superimposed is adapted to the maximum voltage among voltages of the M signal transmission terminals;

the boost control module is configured to boost the input voltage and output a target signal through a third terminal of the boost control module to drive the path switch into a first state by using the target signal when the input voltage is at a high level, wherein a voltage of the target signal is matched to the sum of a boosted voltage of the input voltage and the voltage to be superimposed, and the first state is an on state or an off state;

wherein the signal transmission circuit further comprises a driver module, the driver module comprises N first drive switches;

wherein a first terminal of each first drive switch is connected to the third terminal of the boost control module, a second terminal of the each first drive switch is connected to a path switch in a corresponding signal transmission path, and the each first drive switch is kept on and current is matched;

wherein the control terminal of the path switch is connected with a path capacitor; when a first drive switch is turned on, a corresponding path capacitor can be charged by current from the first drive switch.

5. The signal transmission circuit according to claim 4 , wherein the driver module further comprises a current source and a reference drive switch;

a first terminal of the reference drive switch is connected to the third terminal of the boost control module, a second terminal of the reference drive switch is grounded through the current source, a control terminal of the reference drive switch is connected with a control terminal of the each first drive switch, and current of the each first drive switch is matched to current of the reference drive switch.

6. A signal transmission circuit, comprising N signal transmission paths; each signal transmission path comprising two signal transmission terminals and a path switch connected between the two signal transmission terminals, and N≥1; wherein

the signal transmission circuit further comprises a boost control module and a first feedback module;

a first terminal of the boost control module is connected to an input voltage, a second terminal of the boost control module is connected to the first feedback module, and a third terminal of the boost control module is directly or indirectly connected to a control terminal of the path switch; and the first feedback module is connected to M signal transmission terminals, wherein M≤2N;

the first feedback module is configured to feed back a voltage to be superimposed to the boost control module, and the voltage to be superimposed is adapted to the maximum voltage among voltages of the M signal transmission terminals;

the boost control module is configured to boost the input voltage and output a target signal through a third terminal of the boost control module to drive the path switch into a first state by using the target signal when the input voltage is at a high level, wherein a voltage of the target signal is matched to the sum of a boosted voltage of the input voltage and the voltage to be superimposed, and the first state is an on state or an off state;

wherein the signal transmission circuit, further comprises a driver module, the driver module comprises N second drive switches;

wherein a first terminal of each second drive switch is connected to a control terminal of a path switch in a corresponding signal transmission path, and a second terminal of the each second drive switch is grounded;

wherein the each second drive switch is configured to turn on when the input voltage is at a low level to drive a path switch in a corresponding signal transmission path into a second state;

wherein if the first state is an on state, the second state is an off state; and

wherein if the first state is an off state, the second state is an on state.

7. The signal transmission circuit according to claim 6 , further comprising a pull-down control module; wherein

a first terminal of the pull-down control module is connected to the input voltage, and a second terminal of the pull-down control module is connected to a control terminal of the each second drive switch;

the pull-down control module is configured to:

control the each second drive switch to turn on when the input voltage is at a low level.

8. The signal transmission circuit according to claim 7 , wherein a third terminal of the pull-down control module is connected to a reference voltage; the reference voltage is adapted to the maximum voltage, and the reference voltage is derived from the first feedback module or another second feedback module;

the pull-down control module is specifically configured to:

drive the each second drive switch to turn on when the reference voltage is in a specified operating voltage range and the input voltage is at a low level.

9. The signal transmission circuit according to claim 8 , wherein the reference voltage is lower than the voltage to be superimposed and also lower than the maximum voltage.

10. A signal transmission circuit, comprising N signal transmission paths; each signal transmission path comprising two signal transmission terminals and a path switch connected between the two signal transmission terminals, and N≥1; wherein

the signal transmission circuit further comprises a boost control module and a first feedback module;

a first terminal of the boost control module is connected to an input voltage, a second terminal of the boost control module is connected to the first feedback module, and a third terminal of the boost control module is directly or indirectly connected to a control terminal of the path switch; and the first feedback module is connected to M signal transmission terminals, wherein M≤2N;

the first feedback module is configured to feed back a voltage to be superimposed to the boost control module, and the voltage to be superimposed is adapted to the maximum voltage among voltages of the M signal transmission terminals;

the boost control module is configured to boost the input voltage and output a target signal through a third terminal of the boost control module to drive the path switch into a first state by using the target signal when the input voltage is at a high level, wherein a voltage of the target signal is matched to the sum of a boosted voltage of the input voltage and the voltage to be superimposed, and the first state is an on state or an off state;

wherein the maximum voltage is higher than the voltage to be superimposed, and the difference between the maximum voltage and the voltage to be superimposed is a fixed value;

wherein the signal transmission circuit, further comprises a driver module, the driver module comprises N first drive switches;

wherein a first terminal of each first drive switch is connected to the third terminal of the boost control module, a second terminal of the each first drive switch is connected to a path switch in a corresponding signal transmission path, and the each first drive switch is kept on and current is matched;

wherein the control terminal of the path switch is connected with a path capacitor; when a first drive switch is turned on, a corresponding path capacitor can be charged by current from the first drive switch.

11. A signal transmission circuit, comprising N signal transmission paths; each signal transmission path comprising two signal transmission terminals and a path switch connected between the two signal transmission terminals, and N≥1; wherein

the signal transmission circuit further comprises a boost control module and a first feedback module;

a first terminal of the boost control module is connected to an input voltage, a second terminal of the boost control module is connected to the first feedback module, and a third terminal of the boost control module is directly or indirectly connected to a control terminal of the path switch; and the first feedback module is connected to M signal transmission terminals, wherein M≤2N;

the first feedback module is configured to feed back a voltage to be superimposed to the boost control module, and the voltage to be superimposed is adapted to the maximum voltage among voltages of the M signal transmission terminals;

the boost control module is configured to boost the input voltage and output a target signal through a third terminal of the boost control module to drive the path switch into a first state by using the target signal when the input voltage is at a high level, wherein a voltage of the target signal is matched to the sum of a boosted voltage of the input voltage and the voltage to be superimposed, and the first state is an on state or an off state;

wherein the maximum voltage is higher than the voltage to be superimposed, and the difference between the maximum voltage and the voltage to be superimposed is a fixed value;

wherein the signal transmission circuit further comprises a driver module, the driver module comprises N second drive switches;

Wherein a first terminal of each second drive switch is connected to a control terminal of a path switch in a corresponding signal transmission path, and a second terminal of the each second drive switch is grounded;

wherein the each second drive switch is configured to turn on when the input voltage is at a low level to drive a path switch in a corresponding signal transmission path into a second state;

wherein if the first state is an on state, the second state is an off state; and

wherein if the first state is an off state, the second state is an on state.

12. An electronic device, comprising a signal transmission circuit, wherein the signal transmission circuit comprises N signal transmission paths; each signal transmission path comprising two signal transmission terminals and a path switch connected between the two signal transmission terminals, and N≥1;

wherein the signal transmission circuit further comprises a boost control module and a first feedback module;

wherein a first terminal of the boost control module is connected to an input voltage, a second terminal of the boost control module is connected to the first feedback module, and a third terminal of the boost control module is directly or indirectly connected to a control terminal of the path switch; and the first feedback module is connected to M signal transmission terminals, wherein M≤2N;

wherein the first feedback module is configured to feed back a voltage to be superimposed to the boost control module, and the voltage to be superimposed is adapted to the maximum voltage among voltages of the M signal transmission terminals;

wherein the boost control module is configured to boost the input voltage and output a target signal through a third terminal of the boost control module to drive the path switch into a first state by using the target signal when the input voltage is at a high level, wherein a voltage of the target signal is matched to the sum of a boosted voltage of the input voltage and the voltage to be superimposed, and the first state is an on state or an off state;

wherein the maximum voltage is higher than the voltage to be superimposed, and the difference between the maximum voltage and the voltage to be superimposed is a fixed value;

wherein the first feedback module comprises M diodes and a feedback capacitor;

wherein an anode of each diode is connected to a corresponding signal transmission terminal, cathodes of the M diodes are short circuited together and then connected to a first terminal of the feedback capacitor, the first terminal of the feedback capacitor is connected to the second terminal of the boost control module, and a second terminal of the feedback capacitor is grounded.

13. An electronic device, comprising a signal transmission circuit, wherein the signal transmission circuit comprises N signal transmission paths; each signal transmission path comprising two signal transmission terminals and a path switch connected between the two signal transmission terminals, and N≥1;

wherein the signal transmission circuit further comprises a boost control module and a first feedback module;

wherein a first terminal of the boost control module is connected to an input voltage, a second terminal of the boost control module is connected to the first feedback module, and a third terminal of the boost control module is directly or indirectly connected to a control terminal of the path switch; and the first feedback module is connected to M signal transmission terminals, wherein M≤2N;

wherein the first feedback module is configured to feed back a voltage to be superimposed to the boost control module, and the voltage to be superimposed is adapted to the maximum voltage among voltages of the M signal transmission terminals;

wherein the boost control module is configured to boost the input voltage and output a target signal through a third terminal of the boost control module to drive the path switch into a first state by using the target signal when the input voltage is at a high level, wherein a voltage of the target signal is matched to the sum of a boosted voltage of the input voltage and the voltage to be superimposed, and the first state is an on state or an off state;

wherein the electronic device further comprises a driver module, the driver module comprises N first drive switches;

wherein a first terminal of each first drive switch is connected to the third terminal of the boost control module, a second terminal of the each first drive switch is connected to a path switch in a corresponding signal transmission path, and the each first drive switch is kept on and current is matched;

wherein the control terminal of the path switch is connected with a path capacitor; when a first drive switch is turned on, a corresponding path capacitor can be charged by current from the first drive switch.

14. The electronic device according to claim 13 , wherein the driver module further comprises a current source and a reference drive switch;

a first terminal of the reference drive switch is connected to the third terminal of the boost control module, a second terminal of the reference drive switch is grounded through the current source, a control terminal of the reference drive switch is connected with a control terminal of the each first drive switch, and current of the each first drive switch is matched to current of the reference drive switch.

15. An electronic device, comprising a signal transmission circuit, wherein the signal transmission circuit comprises N signal transmission paths; each signal transmission path comprising two signal transmission terminals and a path switch connected between the two signal transmission terminals, and N≥1;

wherein the signal transmission circuit further comprises a boost control module and a first feedback module;

wherein a first terminal of the boost control module is connected to an input voltage, a second terminal of the boost control module is connected to the first feedback module, and a third terminal of the boost control module is directly or indirectly connected to a control terminal of the path switch; and the first feedback module is connected to M signal transmission terminals, wherein M≤2N;

wherein the first feedback module is configured to feed back a voltage to be superimposed to the boost control module, and the voltage to be superimposed is adapted to the maximum voltage among voltages of the M signal transmission terminals;

wherein the boost control module is configured to boost the input voltage and output a target signal through a third terminal of the boost control module to drive the path switch into a first state by using the target signal when the input voltage is at a high level, wherein a voltage of the target signal is matched to the sum of a boosted voltage of the input voltage and the voltage to be superimposed, and the first state is an on state or an off state;

wherein the electronic device further comprises a driver module, the driver module comprises N second drive switches;

wherein a first terminal of each second drive switch is connected to a control terminal of a path switch in a corresponding signal transmission path, and a second terminal of the each second drive switch is grounded;

wherein the each second drive switch is configured to turn on when the input voltage is at a low level to drive a path switch in a corresponding signal transmission path into a second state;

wherein if the first state is an on state, the second state is an off state; and

wherein if the first state is an off state, the second state is an on state.

16. The electronic device according to claim 15 , further comprising a pull-down control module; wherein

a first terminal of the pull-down control module is connected to the input voltage, and a second terminal of the pull-down control module is connected to a control terminal of the each second drive switch;

the pull-down control module is configured to:

control the each second drive switch to turn on when the input voltage is at a low level.

Assignments (1)

Priority Claims (1)

Continuity (1)

References Cited (25)