CN115242318A - Data transmission device, electronic equipment, filtering control method and control device - Google Patents
Data transmission device, electronic equipment, filtering control method and control device Download PDFInfo
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Abstract
The application discloses a data transmission device, electronic equipment, a filtering control method and a control device, and belongs to the technical field of electronic equipment. Wherein, data transmission device includes: the device comprises a signal source, a signal processing module, a filtering module, a first transmission line beam, a second transmission line beam and a detection line beam; the signal source is connected with the first input end of the filtering module through a first transmission wire harness; the signal source is connected with the second input end of the filtering module through a detection wire harness; the output end of the filtering module is connected with the signal processing module through a second transmission wire harness; the filtering module carries out filtering processing on a second noise signal in the first transmission line bundle according to the first noise signal in the detection line bundle.
Description
Technical Field
The application belongs to the technical field of electronic equipment, and particularly relates to a data transmission device, electronic equipment, a filtering control method and a control device.
Background
In the related art, in electronic devices such as smart phones, a Mobile Industry Processor Interface (MIPI) alliance has proposed various high-speed communication standard interfaces, and these standard structures perform data transmission through a high-speed communication harness.
These high-speed wire harnesses have the characteristics of low voltage and high data transmission rate, but have the disadvantage of poor interference resistance, and when the smart terminal uses strong radiation Communication functions such as Near Field Communication (NFC) or Global System for Mobile Communications (GSM), the high-speed wire harnesses may not work.
Disclosure of Invention
The application aims to provide a data transmission device, electronic equipment, a filtering control method and a control device, and can solve the problem that the high-speed communication wire harness in the related technology is poor in anti-jamming capability.
In a first aspect, an embodiment of the present application provides a data transmission apparatus, including:
the device comprises a signal source, a signal processing module, a filtering module, a first transmission line beam, a second transmission line beam and a detection line beam; the signal source is connected with the first input end of the filtering module through a first transmission wire harness;
the signal source is connected with the second input end of the filtering module through a detection wire harness;
the output end of the filtering module is connected with the signal processing module through a second transmission wire harness;
the filtering module is used for filtering a second noise signal in the first transmission line bundle according to the first noise signal in the detection line bundle.
In a second aspect, an embodiment of the present application provides an electronic device, including:
the data transmission apparatus as set forth in the first aspect, wherein the signal source is an image acquisition module, and the signal processing module is a processor.
In a third aspect, the present application provides a filtering control method for controlling an electronic device as set forth in the second aspect, the data transmission device includes a first switch component and a second switch component, and the filtering control method includes:
acquiring a first noise signal in a detection line bundle;
and controlling the first switch assembly and the second switch assembly to change the switch state according to the comparison result of the first noise signal and the first threshold value so as to filter the second noise signal in the first transmission line bundle.
In a fourth aspect, the present application provides a filtering control device for controlling an electronic apparatus as set forth in the second aspect, the data transmission device includes a first switch component and a second switch component, and the filtering control device includes:
the acquisition module is used for acquiring a first noise signal in the detection line bundle;
and the control module is used for controlling the first switch component and the second switch component to change the switch state according to the comparison result of the first noise signal and the first threshold value so as to filter the second noise signal in the first transmission line bundle.
In a fifth aspect, embodiments of the present application provide a readable storage medium, on which a program or instructions are stored, where the program or instructions, when executed by a processor, implement the steps of the filtering control method according to the third aspect.
In the embodiment of the application, the data transmission device specifically comprises a wire harness of a C-PHY standard, in the data transmission device, a detection wire harness and a filtering module are arranged side by side with the transmission wire harness for transmitting signals, and because the detection wire harness cannot transmit normal communication signals, the signals detected in the detection wire harness are all noise signals, and because the detection wire harness and the transmission wire harness are arranged side by side, the noise signals generated in the detection wire harness and the transmission wire harness by environmental radiation are the same, and the noise signals in the transmission wire harness are filtered through the filtering module based on the noise signals in the detection wire harness, so that the noise interference in the data transmission device can be accurately reduced, the anti-interference capability of the high-speed wire harness is improved, and the working reliability of the data transmission device is ensured when the electronic device starts a strong radiation communication function.
Additional aspects and advantages of the present application will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the present application.
Drawings
The above and/or additional aspects and advantages of the present application will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
fig. 1 shows one of the schematic structural diagrams of a data transmission apparatus according to an embodiment of the present application;
fig. 2 shows a second schematic structural diagram of a data transmission apparatus according to an embodiment of the present application;
fig. 3 is a third schematic structural diagram of a data transmission apparatus according to an embodiment of the present application;
FIG. 4 is a diagram illustrating a fourth exemplary structure of a data transmission apparatus according to an embodiment of the present application;
FIG. 5 shows a block diagram of an electronic device according to an embodiment of the application;
FIG. 6 shows a flow chart of a filtering control method according to an embodiment of the application;
fig. 7 is a block diagram showing a configuration of a filter control apparatus according to an embodiment of the present application.
Reference numerals are as follows:
100 data transmission device, 102 transmission line bundle, 1022 first line core, 1024 second line core, 1026 third line core, 104 signal source, 106 signal processing module, 108 filtering module, 110 detection line bundle, 1102 fourth line core, 1104 fifth line core, 1106 sixth line core, 112 first resistor, 114 second resistor, 116 comparator, 1162 first comparator, 1164 second comparator, 1166 third comparator, 118 first switch component, 1182 first switch component, 1184 second switch component, 120 second switch component, 1202 third switch component, 1204 fourth switch component, 1206 fifth switch component, 122 controller, 124 conjugate filter.
Detailed Description
Reference will now be made in detail to the embodiments of the present application, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present application and are not to be construed as limiting the present application. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
The features of the terms first and second in the description and in the claims of the present application may explicitly or implicitly include one or more of such features. In the description of the present application, "a plurality" means two or more unless otherwise specified. In addition, "and/or" in the specification and claims means at least one of connected objects, a character "/" generally means that a preceding and succeeding related objects are in an "or" relationship.
In the description of the present application, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the present application and to simplify the description, but are not intended to indicate or imply that the device or element so referred to must have a particular orientation, be constructed in a particular orientation, and be operated in a particular manner, and are not to be construed as limiting the present application.
In the description of the present application, it should be noted that, unless otherwise explicitly stated or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, a fixed connection, a detachable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood in a specific case by those of ordinary skill in the art.
A data transmission apparatus, an electronic device, a filter control method, and a control apparatus according to embodiments of the present application are described below with reference to fig. 1 to 7.
In some embodiments of the present application, a data transmission device is provided, and fig. 1 shows one of the schematic structural diagrams of the data transmission device according to the embodiments of the present application, and as shown in fig. 1, a data transmission device 100 includes:
a signal source 104, a signal processing module 106, a filtering module 108, a first transmission line beam 102, a second transmission line beam and a detection line beam 110; the signal source 104 is connected to a first input terminal of the filtering module 108 via a first transmission line bundle 102;
the signal source 104 is connected with a second input end of the filtering module 108 through a detection wire harness 110;
the output end of the filtering module 108 is connected with the signal processing module 106 through a second transmission line;
the filtering module 108 performs filtering processing on a second noise signal in the first transmission line bundle 102 according to the first noise signal in the detection line bundle.
In the embodiment of the present application, the data transmission device 100 is a high-speed data transmission line conforming to the MIPI alliance standard, such as a C-PHY wire harness, and the data transmission device 100 has the characteristics of high signal transmission efficiency, low power consumption, a small number of required interfaces, and the like, and is widely applied to electronic devices such as smart phones.
Aiming at the problem that the high-speed wire harnesses such as a C-PHY wire harness have poor anti-interference capability, the data transmission device 100 is provided with a filtering module 108 and a detection wire harness 110, wherein the detection wire harness 110 is a wire harness arranged side by side with the transmission wire harness 102, specifically, taking the data transmission device 100 as a cable as an example, the detection wire harness 110 and the transmission wire harness 102 are arranged in a protective layer according to the same extending direction, and the number of wire cores, the diameter of the wire cores and the length of the wire cores of the detection wire harness 110 can be the same as those of the transmission wire harness 102.
Therefore, the detection line bundle 110 is equivalent to an extra line bundle arranged in the data transmission device 100, and the line bundle is not connected with the signal source 104 and the signal processing module 106, that is, when no interference factors such as radiation or magnetic field exist in the environment, no signal exists in the detection line bundle 110.
When there is an interference factor in the environment, the detection beam 110 and the transmission beam 102 are arranged side by side, so that the noise signal source 104, such as radiation or a magnetic field, forms approximately the same interference signal in the detection beam 110 and the transmission beam 102, and here, the noise signal formed by the environment noise signal source 104 in the detection beam 110 is referred to as a first noise signal, and the noise signal formed by the environment noise signal source 104 in the transmission beam 102 is referred to as a second noise signal.
The filtering module 108 is connected to the transmission line beam 102 and the detection line beam 110, and when the filtering module 108 detects a first noise signal in the detection line beam 110, it can be determined that similar noise signals exist in the transmission line beam 102, so that a second noise signal in the transmission line beam 102 can be effectively filtered based on a signal value of the first noise signal.
The detection harness 110 and the filtering module 108 which are arranged side by side with the transmission harness 102 for transmitting signals are arranged, noise signals in the transmission harness 102 are filtered based on the noise signals in the detection harness 110, noise interference in the data transmission device 100 can be accurately reduced, the anti-interference capacity of the high-speed harness is improved, and the working reliability of the data transmission device 100 when the electronic equipment starts a strong radiation communication function is guaranteed.
In some embodiments of the present application,
the inspection harness 110 further includes:
a first resistor 112, a first end of the first resistor 112 is connected with a first end of the detection wire harness 110, and a second end of the first resistor 112 is grounded;
and a second resistor 114, wherein a first end of the second resistor 114 is connected to a second end of the detection line bundle 110, and a second end of the second resistor 114 is grounded.
In this embodiment of the application, two ends of the detection harness 110 are respectively provided with a first resistor 112 and a second resistor 114, specifically, in order to be able to accurately simulate the operating state of the transmission harness 102, the first resistor 112 is specifically a resistor of the analog signal source 104, and the second resistor 114 is specifically a resistor of the analog signal processing module 106, so as to simulate an output source from the C-PHY, that is, the signal source 104 to the hardware processing circuit, that is, a working condition of the signal processing module 106, so that the first noise signal on the detection harness 110 can accurately feed back the external interference received by the normal communication signal in the line transmission process, and improve the accuracy of interference detection.
In some embodiments of the present application, as shown in fig. 1, the filtering module 108 includes: a comparator 116, wherein a first input terminal of the comparator 116 is a first input terminal of the filtering module 108, a second input terminal of the comparator 116 is a second input terminal of the filtering module 108, and an output terminal of the comparator 116 is an output terminal of the filtering module 108.
In the embodiment of the present application, the filtering module 108 implements filtering according to the situation of the comparator 116. Specifically, the comparator 116 may be selected from a high-speed analog comparator 116, and the positive input of the comparator 116 is the normal C-PHY signal in the transmission line 102. The negative input of the comparator 116 is the first noise signal on the detection beam 110.
Because the detection beam 110 is arranged side by side with the transmission beam 102, the noise source 104, such as radiation or magnetic field, forms nearly identical interference signals in the detection beam 110 and the transmission beam 102. Therefore, the comparator 116 can filter the interfering second noise signal from the signal of the transmission line beam 102 by performing subtraction on the normal C-PHY signal and the first noise signal, so that the C-PHY signal in the transmission line beam 102 has better signal quality, and the reliability and the anti-interference capability of the data transmission apparatus 100 are improved.
In some embodiments of the present application, fig. 2 shows a second schematic structural diagram of a data transmission apparatus according to an embodiment of the present application, and as shown in fig. 2, the filtering module 108 further includes:
the first switch assembly 118 is arranged on the detection wiring harness 110 and used for switching the on-off state between the detection wiring harness 110 and the comparator 116;
a second switch component 120, a first end of the second switch component 120 is connected to the input end of the comparator 116, and a second end of the second switch component 120 is connected to the output end of the comparator 116 in parallel;
and a controller 122 connected to the test harness 110, the first switch assembly 118 and the second switch assembly 120.
In the embodiment of the present application, the filtering module 108 includes a first switch assembly 118 and a second switch assembly 120, wherein the first switch assembly 118 is disposed on the detection line bundle 110, the detection line bundle 110 is connected to the comparator 116 when the first switch assembly 118 is closed, and the detection line bundle 110 is not connected to the comparator 116 when the first switch assembly 118 is opened.
The second switch device is connected in parallel with the comparator 116, and when the second switch device is turned off, the C-PHY signal in the transmission line bundle 102 passes through the input positive electrode of the comparator 116, passes through the output end of the comparator 116, and is received by the signal processing module 106. When the second switch device is closed, the second switch device is equivalent to short-circuiting the second switch device, and at this time, the C-PHY signal in the transmission line bundle 102 is directly transmitted to the signal processing module 106.
The first switching device and the second switching device are both controlled by the controller 122. Specifically, the controller 122 is connected to the detection line bundle 110 through an Analog-to-Digital Converter (ADC), the ADC is capable of converting a first noise signal in the detection line bundle 110 into a Digital signal, and the controller 122 acquires a signal value of the first noise signal based on the Digital signal.
Specifically, if the controller 122 determines that the signal value of the first noise signal is greater than the preset first threshold, which indicates that the radiated interference is greater in the current environment, the generated noise signal is greater, at this time, the first switch component 118 is controlled to be closed, the second switch component 120 is controlled to be opened, and the C-PHY signal and the first noise signal in the transmission line bundle 102 are processed by the comparator 116, and then a filtered C-PHY signal is output.
If the controller 122 determines that the signal value of the first noise signal is smaller than the first threshold, it indicates that the radiated interference in the current environment is less, and the influence of the noise signal on the signal quality is less, at this time, the first switch component 118 may be controlled to be opened, and the second switch component 120 may be controlled to be closed, and the C-PHY signal in the transmission line bundle 102 is directly transmitted to the signal processing module 106, and at this time, the comparator 116 does not operate, so that the power consumption of the data transmission apparatus 100 can be reduced.
In some embodiments of the present application, as shown in FIGS. 1 and 2, the transmission line bundle 102 is a bundle of the C-PHY standard;
first transmission line bundle 102 includes first core 1022, second core 1024, and third core 1026;
the comparator 116 includes:
a first comparator 1162, a first input end of the first comparator 1162 is connected to the first core 1022, and a second input end of the first comparator 1162 is connected to the detection line bundle 110;
a second comparator 1164, a first input end of the second comparator 1164 is connected to the second core 1024, and a second input end of the second comparator 1164 is connected to the detection line 110;
and a third comparator 1166, wherein a first input terminal of the third comparator 1166 is connected to the third core 1026, and a second input terminal of the third comparator 1166 is connected to the detecting line 110.
In the embodiment of the present application, the transmission harness 102 is a harness of the C-PHY standard, and specifically includes a first core 1022, a second core 1024, and a third core 1026. Specifically, the interface of the C-PHY standard is a display type peripheral communication standard interface for solving high-speed big data, and belongs to a standard interface of three mechanisms. The transmission line bundle 102 of the C-PHY standard employs a 3-wire design, i.e., three cores including the first core 1022, the second core 1024, and the third core 1026 described above.
The first, second and third cores 1022, 1024 and 1026 respectively correspond to three-phase signal channels A, B and C, and the three-phase signal channels are respectively used for transmitting three states of high (VA), medium (VB) and low (VC).
The comparator 116 specifically includes a first comparator 1162, a second comparator 1164, and a third comparator 1166, which are respectively connected to the first core 1022, the second core 1024, and the third core 1026 of the transmission line 102, so as to respectively filter noise signals in the first core 1022, the second core 1024, and the third core 1026.
Specifically, the positive electrode of the input end of the first comparator 1162 is connected to the first core 1022, the negative electrode of the input end of the first comparator 1162 is connected to the detection harness 110, and the first comparator 1162 performs subtraction operation on the normal C-PHY (VA) signal and the first noise signal in the first core 1022, so as to filter the second noise signal that interferes in the signal of the first core 1022.
Similarly, the positive electrode of the input end of the second comparator 1164 is connected to the second wire core 1024, the negative electrode of the input end of the second comparator 1164 is connected to the detection harness 110, and the second comparator 1164 performs subtraction operation on the normal C-PHY (VB) signal and the second noise signal in the second wire core 1024, so as to filter the second noise signal that interferes in the signal of the second wire core 1024.
The positive electrode of the input end of the third comparator 1166 is connected to the third core 1026, the negative electrode of the input end of the third comparator 1166 is connected to the detection line bundle 110, and the third comparator 1166 performs subtraction on the normal C-PHY (VC) signal and the third noise signal in the third core 1026, so as to filter the second noise signal that interferes in the signal of the third core 1026.
According to the embodiment of the application, the noise filtering is performed on the three wire cores of the C-PHY wire harness respectively, so that the C-PHY signal in the transmission wire harness 102 has better signal quality, and the reliability and the anti-interference capability of the data transmission device 100 are improved.
In some embodiments of the present application, as shown in fig. 2, the first switch assembly 118 includes:
a first switch 1182 disposed between the signal source 104 and the comparator 116;
and a second switching member 1184 provided between the first switching member 1182 and the controller 122.
In this embodiment, the first switch assembly 118 specifically includes a first switch 1182 and a second switch 1184, where the first switch 1182 is disposed on the detection wire harness 110, one end of the first switch 1182 is connected to the signal source 104, a second end of the first switch 1182 is connected to the comparator 116, when the first switch is closed, the signal source 104 is communicated with the comparator 116, a negative electrode of an input end of the comparator 116 receives the first noise signal, when the first switch is open, the signal source 104 is disconnected from the comparator 116, and a negative electrode of the comparator 116 does not receive the first noise signal.
The second switch 1184 is also disposed on the detection line bundle 110, and is connected to the controller 122, a first end of the second switch is connected to a second end of the first switch, a second end of the second switch is connected to the second resistor 114, when the second switch is closed, two ends of the detection line bundle 110 are grounded through the resistors, respectively, wherein a noise signal can be generated under the action of the interference signal source 104 in the environment. If the second switch is open, the detection harness 110 cannot form a loop in which the second noise signal is no longer generated.
When the signal value of the second noise signal is small, the first switch 1182 and the second switch 1184 are turned off, and at this time, the filtering module 108 does not work, so that power consumption can be reduced.
In some embodiments of the present application, as shown in fig. 2, the second switch assembly 120 includes:
a third switch 1202 connected in parallel with the first comparator 1162;
a fourth switching element 1204 connected in parallel to the second comparator 1164;
the fifth switch 1206 is connected in parallel with the third comparator 1166.
In the embodiment of the present application, the second switch assembly 120 specifically includes a third switch element 1202, a fourth switch element 1204 and a fifth switch element 1206, which are respectively connected in parallel with the first comparator 1162, the second comparator 1164 and the third comparator 1166.
When the signal value of the first noise signal is greater than the preset first threshold value, the third switching element 1202, the fourth switching element 1204 and the fifth switching element 1206 are controlled to be turned off, and the C-PHY signals in the first wire core 1022, the second wire core 1024 and the third wire core 1026 are processed by the first comparator 1162, the second comparator 1164 and the third comparator 1166, respectively, and then filtered C-PHY signals are output.
If the signal value of the first noise signal is smaller than the first threshold, the third switch 1202, the fourth switch 1204, and the fifth switch 1206 are controlled to be closed, and the C-PHY signals in the first core 1022, the second core 1024, and the third core 1026 are all directly transmitted to the signal processing module 106, at this time, the three-way comparator 116 does not work, which can reduce the power consumption of the data transmission apparatus 100.
In some embodiments of the present application, fig. 3 shows a third structural schematic diagram of a data transmission device according to an embodiment of the present application, and as shown in fig. 3, the detection line bundle 110 includes:
a fourth core 1102 connected to the second input terminal of the first comparator 1162;
a fifth core 1104 connected to a second input terminal of the second comparator 1164;
a sixth core 1106 is connected to the second input of the third comparator 1166.
In the embodiment of the present application, the detection harness 110 may include a plurality of cores, that is, a fourth core 1102, a fifth core 1104 and a sixth core 1106, wherein the fourth core 1102 is arranged side by side with the first core 1022, and both the fourth core 1102 and the first core 1022 are connected to the first comparator 1162. The fifth wire core 1104 is arranged side by side with the second wire core 1024, and both the fifth wire core 1104 and the second wire core 1024 are connected with the second comparator 1164. The sixth wire core 1106 is arranged side by side with the third linearity, and both the sixth wire core 1106 and the third wire core 1026 are connected with the third comparator 1166.
By arranging the multi-channel detection line bundle 110 as the differential signals of the C-PHY (VA), the C-PHY (VB) and the C-PHY (VC), the filtering effect is improved.
In some embodiments of the present application, fig. 4 shows a fourth schematic structural diagram of a data transmission apparatus according to an embodiment of the present application, and as shown in fig. 4, the filtering module 108 includes: and a conjugate filter 124, wherein a first input terminal of the conjugate filter 124 is connected to the first transmission line bundle 102, a second input terminal of the conjugate filter 124 is connected to the detection line bundle 110, and an output terminal of the conjugate filter 124 is connected to the signal processing module 106 through the second transmission line bundle.
In the embodiment of the present application, the filtering module 108 may be implemented by a conjugate filter 124. Specifically, for three-way cores, namely, a first core 1022 (VA), a second core 1024 (VB) and a third core 1026 (VC), in the transmission harness 102 of the C-PHY, three-way conjugate filters 124 are respectively provided, and magnetic field cancellation is formed between the first core 1022 (VA), the second core 1024 (VB), the third core 1026 (VC) and the detection harness 110, so that the noise signal on the detection harness 110 is cancelled in the transmission harness 102.
In the embodiment of the application, the noise is eliminated through the conjugate filter 124, the circuit is simple, and the reliability is high.
In some embodiments of the present application, an electronic device is provided, and fig. 5 shows a block diagram of a structure of the electronic device according to an embodiment of the present application, and as shown in fig. 5, the electronic device 500 includes:
the data transmission apparatus 100 as provided in any of the above embodiments, wherein the signal source is an image acquisition module 502, and the signal processing module is a processor 504.
In this embodiment, the first signal is a C-PHY signal, the image acquisition module 502 is connected to the processor 504 through the data transmission device 100, and the data transmission device 100 can send the first signal with high purity and high quality to the processor 504, so that the processor 504 can drive the display to display a corresponding image through the first signal.
The detection wire harness and the filtering module which are arranged side by side with the transmission wire harness used for transmitting signals are arranged in the data transmission device 100, noise signals in the transmission wire harness are filtered based on noise signals in the detection wire harness, noise interference in the data transmission device 100 can be accurately reduced, the anti-interference capability of the high-speed wire harness is improved, and the working reliability of the data transmission device 100 when the electronic equipment 500 is started to have a strong radiation communication function is guaranteed.
In some embodiments of the present application, there is provided a filtering control method for controlling an electronic device as provided in the above embodiments, the data transmission device includes a first switch component and a second switch component, fig. 6 shows a flowchart of the filtering control method according to an embodiment of the present application, and as shown in fig. 6, the filtering control method includes:
and step 604, controlling the first switch assembly and the second switch assembly to change the switch states according to the comparison result of the signal value of the first noise signal and the first threshold value, so as to filter the second noise signal in the first transmission line bundle.
In the embodiment of the application, a filtering module and a detection wire harness are arranged in the data transmission device, the detection wire harness is equivalent to an additional wire harness arranged in the data transmission device, and the wire harness is not connected with a signal source and a signal processing module, that is, when no interference factors such as radiation or magnetic fields exist in the environment, no signal exists in the detection wire harness.
After the first noise signal in the detection line bundle is detected, the similar noise signals in the transmission line bundle can be determined, so that the second noise signal in the transmission line bundle can be effectively filtered based on the signal value of the first noise signal.
Specifically, the filtering module comprises a first switch assembly and a second switch assembly, wherein the first switch assembly is arranged on the detection wiring harness, the detection wiring harness is connected with the comparator when the first switch assembly is closed, and the detection wiring harness is not connected with the comparator when the first switch assembly is disconnected.
The second switch device is connected with the comparator in parallel, and when the second switch device is disconnected, the C-PHY signal in the transmission line bundle passes through the input anode of the comparator and then is received by the signal processing module after passing through the output end of the comparator. When the second switch device is closed, the second switch device is equivalent to short circuit of the second switch device, and the C-PHY signal in the transmission line beam is directly transmitted to the signal processing module.
Whether a noise signal exists in the current transmission line is judged based on the comparison result of the signal value of the first noise signal and a preset first threshold value, and when the noise signal exists, the noise signal is filtered, so that the noise interference in the data transmission device can be accurately reduced, the anti-interference capability of the high-speed line is improved, and the working reliability of the data transmission device is ensured when the electronic equipment starts a strong radiation communication function.
In some embodiments of the present application, controlling the first switching component and the second switching component to change the switching state according to a comparison result of the first noise signal with the first threshold value includes:
under the condition that the signal value of the first noise signal is smaller than a first threshold value, controlling the first switch assembly to be closed and controlling the second switch assembly to be opened;
and under the condition that the signal value of the first noise signal is greater than or equal to a first threshold value, controlling the first switch component to be opened and controlling the second switch component to be closed.
In the embodiment of the application, if the controller determines that the signal value of the first noise signal is greater than the preset first threshold, it indicates that the radiation interference in the current environment is more, and the generated noise signal is larger, at this time, the first switch component is controlled to be closed, the second switch component is controlled to be opened, and the C-PHY signal in the transmission line bundle and the first noise signal are processed by the comparator, and then the filtered C-PHY signal is output, so that the reliability of data transmission is improved.
If the controller determines that the signal value of the first noise signal is smaller than the first threshold, the radiation interference in the current environment is less, the influence of the noise signal on the signal quality is smaller, at the moment, the first switch component can be controlled to be switched off, the second switch component is controlled to be switched on, the C-PHY signal in the transmission line beam is directly transmitted to the signal processing module, at the moment, the comparator does not work, and the power consumption of the data transmission device can be reduced.
In some embodiments of the present application, after controlling the first and second switching components to change the switching state, the filtering control method further comprises:
performing eye diagram analysis on the first signal in the transmission line bundle to obtain the signal quality margin of the first signal;
displaying image information corresponding to the first signal under the condition that the signal quality allowance is larger than or equal to a second threshold;
in the case where the signal quality margin is less than the second threshold, the display of the image information is abandoned, and the first threshold is lowered.
In the embodiment of the present application, after the first signal is filtered or not filtered by controlling the first switching component and the second switching component to change the switching state based on the comparison result of the first noise signal and the first threshold, the first signal is further subjected to eye diagram analysis.
Specifically, the eye pattern refers to an image formed by overlapping each symbol waveform obtained by scanning due to the afterglow effect of the oscilloscope. The eye diagram contains rich information, and the actual influence of intersymbol interference and noise can be observed from the eye diagram, so that the signal quality and the signal quality margin of a signal can be estimated, namely the signal quality and the signal quality margin of the signal can be judged.
If the signal quality margin of the first signal is determined to be greater than or equal to the second threshold value based on the eye diagram analysis, the quality of the first signal is better, and at the moment, the controller controls the display device to normally display the image corresponding to the first signal and maintains the current first threshold value unchanged.
If the eye diagram analysis determines that the signal quality margin of the first signal is smaller than the second threshold, which indicates that the signal quality of the currently processed first signal is poor and cannot meet the requirement, the display of the image corresponding to the current first signal is abandoned, and the first threshold is appropriately reduced, for example, the first threshold is reduced from 1.0mV to 0.8mV, so as to enhance the filtering range of the filtering module.
According to the method and the device, the C-PHY signal eye diagram is identified through the controller side, the first threshold value of the filter module intervening work is adjusted in a self-adaptive mode, the reliability of data transmission can be guaranteed, and the accuracy of image display is guaranteed.
In some embodiments of the present application, there is provided a filtering control apparatus for controlling an electronic device as provided in the above embodiments, the data transmission apparatus includes a first switch component and a second switch component, fig. 7 shows a block diagram of the filtering control apparatus according to the embodiments of the present application, and as shown in fig. 7, the filtering control apparatus 700 includes:
an obtaining module 702, configured to obtain a first noise signal in a detection line bundle;
and a control module 704, configured to control the first switch component and the second switch component to change the switch states according to a comparison result between the signal value of the first noise signal and the first threshold, so as to perform filtering processing on the second noise signal in the first transmission line bundle.
The embodiment of the application judges whether the noise signal exists in the current transmission line beam or not based on the signal value of the first noise signal and the comparison result of the preset first threshold, and carries out filtering processing on the noise signal when the noise signal exists, so that the noise interference in the data transmission device can be accurately reduced, the anti-interference capability of the high-speed line beam is improved, and the working reliability of the data transmission device when the electronic equipment starts a strong radiation communication function is ensured.
In some embodiments of the present application, the control module is further configured to:
under the condition that the signal value of the first noise signal is smaller than a first threshold value, controlling the first switch assembly to be closed and controlling the second switch assembly to be opened;
and under the condition that the signal value of the first noise signal is greater than or equal to a first threshold value, controlling the first switching component to be opened and controlling the second switching component to be closed.
In the embodiment of the application, if the controller determines that the signal value of the first noise signal is greater than the preset first threshold, it indicates that the radiation interference in the current environment is more, and the generated noise signal is larger, at this time, the first switch component is controlled to be closed, the second switch component is controlled to be opened, and the C-PHY signal in the transmission line and the first noise signal are processed by the comparator, and then the filtered C-PHY signal is output, so that the reliability of data transmission is improved.
If the controller determines that the signal value of the first noise signal is smaller than the first threshold, the radiation interference in the current environment is less, the influence of the noise signal on the signal quality is smaller, at the moment, the first switch component can be controlled to be switched off, the second switch component is controlled to be switched on, the C-PHY signal in the transmission line beam is directly transmitted to the signal processing module, at the moment, the comparator does not work, and the power consumption of the data transmission device can be reduced.
In some embodiments of the present application, the filtering control means further comprises:
the analysis module is used for carrying out eye diagram analysis on the first signal in the transmission line bundle so as to obtain the signal quality allowance of the first signal;
the display module is used for displaying the image information corresponding to the first signal under the condition that the signal quality allowance is larger than or equal to a second threshold;
and the adjusting module is used for giving up the display of the image information and reducing the first threshold value under the condition that the signal quality allowance is smaller than the second threshold value.
According to the method and the device, the C-PHY signal eye diagram is identified through the controller side, the first threshold value of the filter module intervening work is adjusted in a self-adaptive mode, the reliability of data transmission can be guaranteed, and the accuracy of image display is guaranteed.
The embodiment of the present application further provides a readable storage medium, where a program or an instruction is stored on the readable storage medium, and when the program or the instruction is executed by a processor, the program or the instruction implements the processes of the foregoing method embodiments, and can achieve the same technical effects, and in order to avoid repetition, details are not repeated here.
The processor is the processor in the electronic device in the above embodiment. Readable storage media, including computer-readable storage media, such as computer Read-Only Memory (ROM), random Access Memory (RAM), magnetic or optical disks, etc.
In the description herein, reference to the description of the terms "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples" or the like means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the application. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
While embodiments of the present application have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the application, the scope of which is defined by the claims and their equivalents.
Claims (10)
1. A data transmission apparatus, comprising:
the device comprises a signal source, a signal processing module, a filtering module, a first transmission line beam, a second transmission line beam and a detection line beam; the signal source is connected with a first input end of the filtering module through the first transmission wire harness;
the signal source is connected with the second input end of the filtering module through the detection wire harness;
the output end of the filtering module is connected with the signal processing module through the second transmission wire harness;
the filtering module is used for filtering a second noise signal in the first transmission line bundle according to the first noise signal in the detection line bundle.
2. The data transmission apparatus according to claim 1, further comprising:
a first end of the first resistor is connected with a first end of the detection wire harness, and a second end of the first resistor is grounded;
and a first end of the second resistor is connected with a second end of the detection wire harness, and a second end of the second resistor is grounded.
3. The data transmission apparatus of claim 1, wherein the filtering module comprises:
and the first input end of the comparator is the first input end of the filtering module, the second input end of the comparator is the second input end of the filtering module, and the output end of the comparator is the output end of the filtering module.
4. The data transmission apparatus of claim 3, wherein the filtering module further comprises:
the first switch assembly is arranged on the detection wiring harness and used for switching the on-off state between the detection wiring harness and the comparator;
a first end of the second switch component is connected with the input end of the comparator, and a second end of the second switch component is connected with the output end of the comparator in parallel;
a controller connected with the detection harness, the first switch assembly and the second switch assembly.
5. The data transmission apparatus according to claim 4, wherein the transmission harness is a harness of the C-PHY standard;
the first transmission line bundle comprises a first wire core, a second wire core and a third wire core;
the comparator includes:
a first comparator, wherein a first input end of the first comparator is connected with the first core, and a second input end of the first comparator is connected with the detection wire harness;
a second comparator, a first input end of the second comparator is connected with the second wire core, and a second input end of the second comparator is connected with the detection wire harness;
and a first input end of the third comparator is connected with the third wire core, and a second input end of the third comparator is connected with the detection wire harness.
6. The data transmission apparatus of claim 1, wherein the filtering module comprises:
and a first input end of the conjugate filter is connected with the first transmission line bundle, a second input end of the conjugate filter is connected with the detection line bundle, and an output end of the conjugate filter is connected with the signal processing module through the second transmission line bundle.
7. An electronic device, comprising:
the data transmission apparatus according to any one of claims 1 to 6, wherein the signal source is an image acquisition module and the signal processing module is a processor.
8. A filter control method for controlling the electronic device according to claim 7, wherein the data transmission apparatus includes a first switch component and a second switch component, the filter control method comprising:
acquiring a first noise signal in the detection line bundle;
and controlling the first switch component and the second switch component to change the switch state according to the comparison result of the signal value of the first noise signal and a first threshold value so as to filter a second noise signal in the first transmission line bundle.
9. The filtering control method according to claim 8, wherein the controlling the first switch component and the second switch component to change the switch states according to the comparison result of the first noise signal and a first threshold value comprises:
controlling the first switching component to be closed and controlling the second switching component to be opened when the signal value of the first noise signal is smaller than the first threshold value;
and controlling the first switch component to be opened and the second switch component to be closed when the signal value of the first noise signal is larger than or equal to the first threshold value.
10. A filter control apparatus for controlling the electronic device according to claim 7, wherein the data transmission apparatus includes a first switch component and a second switch component, the filter control apparatus comprising:
the acquisition module is used for acquiring a first noise signal in the detection line bundle;
and the control module is used for controlling the first switch component and the second switch component to change the switch state according to the comparison result of the signal value of the first noise signal and a first threshold value so as to filter a second noise signal in the first transmission line bundle.
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