US 2015/0349777 A1Published application

Switching circuit and electronic device

AssigneeHuawei Technologies Co., Ltd.

InventorWei YIN

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Abstract

The present invention provides a switching circuit and an electronic device, which relate to the field of electronic technologies, so as to improve reliability of image processing. The switching circuit includes a comparator circuit, a first switch circuit, a second switch circuit, a first drive voltage source, and a second drive voltage source. Two input ends of the comparator circuit respectively receive an input voltage and a reference voltage, an output end is separately connected to an input end of the first switch circuit and an input end of the second switch circuit; The comparator circuit determines whether the input voltage is greater than the reference voltage, outputs a high level when determining that the input voltage is greater than the reference voltage, and outputs a low level when determining that the input voltage is not greater than the reference voltage.

Claims10

Dependent claims

A switching circuit, comprising a comparator circuit, a first switch circuit, a second switch circuit, a first drive voltage source, and a second drive voltage source, wherein the comparator circuit comprises a first input end, a second input end, and an output end;

the first switch circuit and the second switch circuit both comprise an input end, an output end, and a drive end;
the first input end of the comparator circuit is configured to receive an input voltage;
the second input end of the comparator circuit is configured to receive a reference voltage;
the output end of the comparator circuit is separately connected to the input end of the first switch circuit and the input end of the second switch circuit;
the drive end of the first switch circuit is connected to the first drive voltage source;
the drive end of the second switch circuit is connected to the second drive voltage source;
the comparator circuit is configured to determine whether the input voltage is greater than the reference voltage;
output a high level if it is determined that the input voltage is greater than the reference voltage;
and output a low level if it is determined that the input voltage is not greater than the reference voltage;
the first switch circuit is configured to, when the comparator circuit outputs the high level, switch on and output, by using the output end of the first switch circuit, a first drive voltage provided by the first drive voltage source;
and switch off when the comparator circuit outputs the low level;
and
the second switch circuit is configured to, when the comparator circuit outputs the low level, switch on and output, by using the output end of the second switch circuit, a second drive voltage provided by the second drive voltage source;
and switch off when the comparator circuit outputs the high level.

11 more elements

An electronic device, comprising a processor, a connector, and a switching circuit, wherein:

the processor is separately connected to an output end of a first switch circuit and an output end of a second switch circuit in the switching circuit;the connector is connected to a first input end of a comparator circuit in the switching circuit;
and
the switching circuit comprises a comparator circuit, a first switch circuit, a second switch circuit, a first drive voltage source, and a second drive voltage source, wherein the comparator circuit comprises a first input end, a second input end, and an output end;
the first switch circuit and the second switch circuit both comprise an input end, an output end, and a drive end;
the first input end of the comparator circuit is configured to receive an input voltage;
the second input end of the comparator circuit is configured to receive a reference voltage;
the output end of the comparator circuit is separately connected to the input end of the first switch circuit and the input end of the second switch circuit;
the drive end of the first switch circuit is connected to the first drive voltage source;
the drive end of the second switch circuit is connected to the second drive voltage source;
the comparator circuit is configured to determine whether the input voltage is greater than the reference voltage;
output a high level if it is determined that the input voltage is greater than the reference voltage;
and output a low level if it is determined that the input voltage is not greater than the reference voltage;
the first switch circuit is configured to, when the comparator circuit outputs the high level, switch on and output, by using the output end of the first switch circuit, a first drive voltage provided by the first drive voltage source;
and switch off when the comparator circuit outputs the low level;
and
the second switch circuit is configured to, when the comparator circuit outputs the low level, switch on and output, by using the output end of the second switch circuit, a second drive voltage provided by the second drive voltage source;
and switch off when the comparator circuit outputs the high level.

14 more elements

Dependencies are inferred from the claim text.

Facts

Application: 14/724,457Filed 28 May 2015
Priority: CN 201410241139.530 May 2014
Published: 3 Dec 2015
Term ends: Not estimatedThe source records don’t support an estimate.

Classification6 codes

H03K 19/017527
Using a combination of bipolar and field effect transistors [BIFET]: with at least one differential stage
H03K 5/24
Circuits having more than one input and one output for comparing pulses or pulse trains with each other according to input signal…
H04N 23/66
Control of cameras or camera modules: remote control of cameras or camera parts, e.g. by remote control devices
H04N 25/00
Circuitry of solid-state image sensors [ssis]