CN114429744B - Control circuit, control method thereof, display device and storage medium - Google Patents
Control circuit, control method thereof, display device and storage medium Download PDFInfo
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- 238000004590 computer program Methods 0.000 claims description 6
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/006—Electronic inspection or testing of displays and display drivers, e.g. of LED or LCD displays
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G2310/00—Command of the display device
- G09G2310/02—Addressing, scanning or driving the display screen or processing steps related thereto
- G09G2310/0243—Details of the generation of driving signals
- G09G2310/0245—Clearing or presetting the whole screen independently of waveforms, e.g. on power-on
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G2330/00—Aspects of power supply; Aspects of display protection and defect management
- G09G2330/06—Handling electromagnetic interferences [EMI], covering emitted as well as received electromagnetic radiation
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G2380/00—Specific applications
- G09G2380/08—Biomedical applications
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Abstract
The embodiment of the application provides a control circuit, a control method thereof, a display device and a storage medium. The control circuit comprises a first control unit, a signal conversion unit and a time sequence control unit; the first control unit is electrically connected with the signal conversion unit and the time sequence control unit and is used for periodically detecting parameters of the first display signal received by the signal conversion unit. Determining whether the parameter of the first display signal accords with a parameter design value; when the parameter of the first display signal does not accord with the parameter design value, resetting the parameter of the first display signal at the input end of the signal conversion unit, and executing the next detection period until the parameter of the first display signal accords with the parameter design value; determining whether the flag bit is a first numerical value; if yes, the signal conversion unit is configured, and the time sequence control unit is initialized. The method and the device can automatically restore normal display after electromagnetic interference disappears.
Description
Technical Field
The present application relates to the field of display technologies, and in particular, to a control circuit, a control method thereof, a display device, and a storage medium.
Background
At present, the development of science and technology is pushing the medical industry to rapidly promote, and medical equipment is being used as a field which can embody the technical development most in the whole industry, and more influences our lives. Because of the specificity of the medical industry, medical devices are more focused on the reliability and safety of products than consumer electronics, and thus, for medical products, there is a design need to have improved reliability and safety as primary positions.
According to the product standard of medical industry, the anti-interference capability is required for display products, after the external electromagnetic interference disappears, the display needs to automatically recover normal display, as a large household generating interference in medical scenes, the single-stage output power of the electric knife is more than 300W (watts) when the electric knife works, the instant power is higher when the electric knife is started, stronger electromagnetic radiation can be generated when the electric knife is used, and according to the medical application requirement, the abnormal display of the display device needs to recover normal after the high-frequency interference signal of the electric knife disappears.
At present, a digital filter and a wire mesh are added to shield the electromagnetic interference, but the electromagnetic interference is high in cost, large in occupied space or unfavorable for the installation of the whole machine.
Disclosure of Invention
Aiming at the defects of the existing mode, the application provides a control circuit, a control method thereof, a display device and a storage medium, which are used for solving the technical problems of higher cost, larger occupied space and unfavorable installation of the whole machine caused by the fact that the type of electromagnetic interference is shielded by adding a digital filter and a wire mesh in the prior art.
In a first aspect, an embodiment of the present application provides a control circuit, applied to a display device, including: the device comprises a first control unit, a signal conversion unit and a time sequence control unit;
the first control unit is electrically connected with the signal conversion unit and the time sequence control unit and is used for periodically detecting parameters of the first display signal received by the signal conversion unit, and one detection period comprises: acquiring parameters of a first display signal; determining whether the parameter of the first display signal accords with the parameter design value; when the parameter of the first display signal does not accord with the parameter design value, resetting the parameter of the first display signal at the input end of the signal conversion unit, and executing the next detection period until the parameter of the first display signal accords with the parameter design value; determining whether the flag bit is a first numerical value; if not, executing the next detection period; if yes, the signal conversion unit is configured, and the time sequence control unit is initialized.
In a second aspect, embodiments of the present application provide a display device including a display panel, a driving unit, and the control circuit of the first aspect;
the time sequence control unit, the driving unit and the display panel in the control circuit are sequentially and electrically connected.
In a third aspect, an embodiment of the present application provides a control method, which is applied to the control circuit in the first aspect, where the control method includes:
the periodic detection signal conversion unit receives the parameter of the first display signal, and one detection period includes:
acquiring parameters of a first display signal;
determining whether the parameter of the first display signal accords with the parameter design value; resetting time sequence data of the first display signal at the input end of the signal conversion unit when the parameter of the first display signal does not accord with the parameter design value, and executing the next detection period until the parameter of the first display signal accords with the parameter design value;
determining whether the flag bit is a first numerical value; if not, executing the next detection period; if yes, the signal conversion unit is configured, and the time sequence control unit is initialized.
In a third aspect, embodiments of the present application provide a computer-readable storage medium having stored thereon a computer program, the computer-readable storage medium being characterized in that the computer program, when executed by an electronic device, implements the control method as in the first aspect.
The beneficial technical effects that technical scheme that this application embodiment provided brought include:
according to the control circuit provided by the embodiment of the application, through the first control unit, the parameters of the first display signal are periodically detected, when the signal is interfered and abnormal, namely, after the first control unit obtains the abnormal parameters of the first display signal, the parameters of the first display signal at the input end of the signal conversion unit are reset until the parameters of the first display signal accord with the parameter design value, when the flag bit is a first numerical value (namely, the parameters of the first display signal at the input end of the signal conversion unit are reset), the signal conversion unit is reconfigured, and the timing control unit is initialized, so that the reliability of the display device can be improved, and normal display can be automatically recovered after electromagnetic interference disappears.
That is, the embodiment of the application is applied to the field of medical display devices by constructing the first control unit cycle detection method, and the effect that the display device can recover by itself under the condition of stronger electromagnetic interference is realized by continuously detecting the input signal (namely, the first display signal) and reconfiguring when the input signal is detected to be abnormal, so that the stability and the reliability of the display device under the medical application scene of strong interference are ensured. According to the embodiment of the application, the judgment and self-recovery mechanism of strong electromagnetic interference is realized through a software flow, components such as a steel mesh and a filter are not required to be additionally arranged, and the interference shielding cost is reduced. Moreover, the embodiment of the application also provides a solution for electromagnetic interference of other products.
Additional aspects and advantages of the 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 application.
Drawings
The foregoing 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, in which:
fig. 1 is a schematic structural diagram of a control circuit according to an embodiment of the present application;
fig. 2 is a schematic structural diagram of a display device according to an embodiment of the present application;
fig. 3 is a schematic flow chart of a control method according to an embodiment of the present application;
FIG. 4 is a flow chart of another control method according to an embodiment of the present disclosure;
FIG. 5 is a flow chart of another control method according to an embodiment of the present disclosure;
fig. 6 is a flow chart of another control method according to an embodiment of the present application.
Reference numerals:
100-display device, 10-control circuit, 11-first control unit, 12-signal conversion unit, 13-time sequence control unit, 14-monitoring unit, 20-driving unit, 30-display panel;
200-system on chip.
Detailed Description
Examples of embodiments of the present application are illustrated in the accompanying drawings, in which like or similar reference numerals refer to like or similar elements or elements having like or similar functionality throughout. Further, if detailed description of known techniques is not necessary for the illustrated features of the present application, it is omitted. The embodiments described below by referring to the drawings are exemplary only for the purpose of illustrating the present application and are not to be construed as limiting the present application.
It will be understood by those skilled in the art that all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs unless defined otherwise. It will be further understood that terms, such as those defined in commonly used dictionaries, should be interpreted as having a meaning that is consistent with their meaning in the context of the prior art and will not be interpreted in an idealized or overly formal sense unless expressly so defined herein.
As used herein, the singular forms "a", "an", "the" and "the" are intended to include the plural forms as well, unless expressly stated otherwise, as understood by those skilled in the art. It will be further understood that the terms "comprises" and/or "comprising," when used in this specification, specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof. It will be understood that when an element is referred to as being "connected" or "coupled" to another element, it can be directly connected or coupled to the other element or intervening elements may also be present. Further, "connected" or "coupled" as used herein may include wirelessly connected or wirelessly coupled. The term "and/or" as used herein includes all or any element and all combination of one or more of the associated listed items.
The following describes the technical solutions of the present application and how the technical solutions of the present application solve the above technical problems in detail with specific embodiments.
The embodiment of the application provides a control circuit 10, which is applied to a display device, as shown in fig. 1, the control circuit 10 includes: a first control unit 11, a signal conversion unit 12, and a timing control unit 13.
The first control unit 11 is electrically connected to the signal conversion unit 12 and the timing control unit 13, and is configured to periodically detect the parameter of the first display signal received by the signal conversion unit 12, where a detection period includes: acquiring parameters of a first display signal; determining whether the parameter of the first display signal accords with the parameter design value; when the parameter of the first display signal does not accord with the parameter design value, resetting the parameter of the first display signal at the input end of the signal conversion unit 12, and executing the next detection period until the parameter of the first display signal accords with the parameter design value; determining whether the flag bit is a first numerical value; if not, executing the next detection period; if so, the signal conversion unit 12 is configured and the timing control unit 13 is initialized.
When the first display signal is detected to be abnormal, resetting and re-detecting the first display signal, when the first display is detected to be normal, judging whether the parameter of the first display signal is reset (namely, whether the flag bit is a first numerical value), when the parameter of the first display signal is not reset, re-detecting, when the parameter of the first display signal is reset, configuring the signal conversion unit 12, and initializing the time control unit 13. After the signal conversion unit 12 is configured and the timing control unit 13 is initialized, the signal conversion unit 12 converts the input first display signal into the second display signal, and the timing control unit 13 drives the display panel 30 in the display device based on the second display signal, and the display device 100 displays normally. According to the control circuit provided by the embodiment of the application, through the first control unit 11, the parameters of the first display signal are periodically detected, when the signal is interfered and has abnormality, namely, after the first control unit obtains the parameter abnormality of the first display signal, the parameters of the first display signal at the input end of the signal conversion unit 12 are reset until the parameters of the first display signal accord with the parameter design value, when the flag bit is a first numerical value (namely, the parameters of the first display signal at the input end of the signal conversion unit 12 are reset), the signal conversion unit 12 is reconfigured, and the timing control unit 13 is initialized, so that the reliability of the display device can be improved, and normal display can be automatically recovered after electromagnetic interference disappears.
That is, the embodiment of the present application is applied to the field of medical display devices by constructing the first control unit 11 cycle detection method, and by continuously detecting the input signal (i.e., the first display signal) and reconfiguring the input signal when detecting that the input signal is abnormal, the effect that the display device can recover by itself under the condition of strong electromagnetic interference is achieved, and the stability and reliability of the display device under the medical application scenario of strong interference are ensured.
According to the embodiment of the application, the judgment and self-recovery mechanism of strong electromagnetic interference is realized through a software flow, components such as a steel mesh and a filter are not required to be additionally arranged, and the interference shielding cost is reduced. Moreover, the embodiment of the application also provides a solution for electromagnetic interference of other products.
Alternatively, the first control unit 11 may be a CPU (Central Processing Unit ), general purpose processor, DSP (Digital Signal Processor, data signal processor), ASIC (Application Specific Integrated Circuit ), FPGA (Field-Programmable Gate Array, field programmable gate array) or other programmable logic device, transistor logic device, hardware component, or any combination thereof. Which may implement or perform the various exemplary logic blocks, modules, and circuits described in connection with this disclosure. The controller 113 may also be a combination that implements computing functionality, such as a combination comprising one or more microprocessors, a combination of a DSP and a microprocessor, or the like.
Optionally, the signal conversion unit 12 includes: bridge IC.
Optionally, the first display signal includes: LVDS (Low-Voltage Differential Signaling, low voltage differential signaling).
Optionally, the second display signal includes: MIPI (Mobile Industry Processor Interface), mobile industry processor interface) signal.
Alternatively, the first control unit 11 is electrically connected to the signal conversion unit 12 through a first communication interface. The first control unit 11 is electrically connected to the timing control unit 13 through a second communication interface.
Alternatively, the first communication interface and the second communication interface are both I2C interfaces, and the first control unit 11 is electrically connected to both the signal conversion unit 12 and the timing control unit 13 through an I2C bus.
In some embodiments, the signal conversion unit 12 includes: a register;
the register is electrically connected to the first control unit 11 for storing parameters of the data of the first display signal.
In some embodiments, as shown in fig. 1, the control circuit 10 further comprises:
the monitoring unit 14 is electrically connected to the first control unit 11 and is configured to monitor an operation state of the first control unit 11.
Optionally, the monitoring unit 14 comprises a watchdog counter. By setting a proper dog feeding function, the circulation process of the first control unit 11 is monitored, the first control unit 11 is prevented from being blocked by a system program, and the system robustness is improved.
Based on the same inventive concept, the present embodiment provides a display device, as shown in fig. 2, including a display panel 30, a driving unit 20, and a control circuit 10; the timing control unit 13, the driving unit 20, and the display panel 30 in the control circuit 10 are electrically connected in this order.
Alternatively, the system on chip 200 (Soc) is electrically connected to the signal conversion unit 12 for outputting the first display signal to the signal conversion unit 12.
Alternatively, the timing control unit 13 and the driving unit 20 may be separately provided, or the timing control unit 13 and the driving unit 20 may be integrated together, which is not particularly limited in this application. For a display device of a smaller size, the timing control unit 13 and the driving unit 20 are generally integrated together. In a display device having a large size or a high resolution, the timing control unit 13 and the driving unit 20 are generally separately provided.
Optionally, the display panel comprises an LCD (Liquid Crystal Display ).
Based on the same inventive concept, the embodiments of the present application provide a control method, which is applied to the control circuit provided in any one of the embodiments, and the control method includes:
the periodic detection signal conversion unit receives the parameter of the first display signal, and one detection period includes:
acquiring parameters of a first display signal;
determining whether the parameter of the first display signal accords with the parameter design value; when the parameter of the first display signal does not accord with the parameter design value, resetting the parameter of the first display signal at the input end of the signal conversion unit, and executing the next detection period until the parameter of the first display signal accords with the parameter design value;
determining whether the flag bit is a first numerical value; if not, executing the next detection period; if yes, the signal conversion unit is configured, and the time sequence control unit is initialized.
The execution body of the embodiment of the application is a first control unit. Optionally, a flowchart of a control method of the control circuit according to the embodiment of the present application is shown in fig. 3, and the control method includes periodically detecting a parameter of the first display signal received by the signal conversion unit, where a detection period includes:
s1: acquiring parameters of a first display signal;
s2: determining whether the parameter of the first display signal accords with the parameter design value; if not, executing the step S3; if yes, go to step S4.
S3: and resetting the parameter of the first display signal at the input end of the signal conversion unit, and executing step S1.
S4: determining whether the flag bit is a first numerical value; if not, executing the step S1; if yes, go to step S5.
S5: the signal conversion unit is configured and the timing control unit is initialized, after which step S1 is performed.
According to the control method provided by the embodiment of the application, the parameter of the first display signal at the input end of the signal conversion unit is reset until the parameter of the first display signal accords with the parameter design value by periodically detecting the parameter of the first display signal, when the signal is interfered and has abnormality, the signal conversion unit is reconfigured and the timing control unit is initialized when the flag bit is a first numerical value (namely, the parameter of the first display signal at the input end of the signal conversion unit is reset), so that the reliability of the display device can be improved, and the normal display can be automatically restored after the electromagnetic interference disappears.
That is, the embodiment of the application is applied to the field of medical display devices by constructing the first control unit cycle detection method, and the effect that the display device can recover by itself under the condition of stronger electromagnetic interference is realized by continuously detecting the input signal (namely, the first display signal) and reconfiguring when the input signal is detected to be abnormal, so that the stability and the reliability of the display device under the medical application scene of strong interference are ensured. Optionally, the parameter of the first display signal at the input end of the signal conversion unit is reset, and the parameter of the first display signal is obtained again after the first time.
Alternatively, the first time may be 20ms, 30ms, 40ms, or the like, which is not particularly limited in this application.
According to the method and the device, the state of the current signal is judged by continuously acquiring and determining corresponding data of the register of the first control unit in a specific time interval, when the signal is interfered and has abnormality, the first control unit is reset after the register data read by the first control unit is abnormal, the first control unit continues to monitor the parameter of the first display signal stored in the received register, and when the parameter is detected to be normal, the first control unit is reconfigured and output. The display device can achieve the effect of self-recovery under the condition of strong electromagnetic interference, and the stability and reliability of the display device under the medical application scene of strong interference are ensured.
In some embodiments, obtaining parameters of the first display signal includes:
acquiring at least one of a clock frequency and a resolution of a parameter of the first display signal from a register of the signal conversion unit;
and determining whether the parameter of the first display signal meets the parameter design value, including at least one of the following:
determining whether the clock frequency of the parameter of the first display signal meets the clock frequency design value;
it is determined whether the resolution of the parameter of the first display signal corresponds to the resolution design value.
In some embodiments, when the parameter of the first display signal does not meet the parameter design value, resetting the parameter of the first display signal at the input end of the signal conversion unit includes:
when the parameter of the first display signal does not accord with the parameter design value, the parameter of the first display signal at the input end stored in the register of the signal conversion unit is refreshed, and the flag bit is set to be a first numerical value.
In some embodiments, the parameters further comprise at least one of:
horizontal back shoulder time HBP, horizontal front shoulder time HFP, horizontal synchronization period HS, vertical back shoulder time VBP, vertical front shoulder time VFP, and vertical synchronization period VS.
Optionally, when the parameter of the first display signal does not meet the parameter design value, refreshing one data of the horizontal back shoulder time HBP, the horizontal front shoulder time HFP, the horizontal synchronization period HS, the vertical back shoulder time VBP, the vertical front shoulder time VFP, the vertical synchronization period VS and the resolution of the parameter of the first display signal stored in the register of the signal conversion unit, and setting the flag bit to the first value.
In some embodiments, configuring the signal conversion unit and initializing the timing control unit includes:
the first display signal at the input end of the signal conversion unit is configured, the timing control unit is initialized, the second display signal at the output end of the signal conversion unit is configured, and the flag bit is set to be a second numerical value.
In some embodiments, configuring the input first display signal of the signal conversion unit includes: the input format, the number of ports and the synchronous mode of the first display signal are set, and the pins of the input end are set;
configuring the second display signal at the output end of the signal conversion unit, including: the number of channels and timing of the second display signal.
Optionally, a flowchart of a control method of the control circuit according to the embodiment of the present application is shown in fig. 4, and the control method includes periodically detecting a parameter of the first display signal received by the signal conversion unit, where a detection period includes:
s1: acquiring parameters of a first display signal;
s21: determining whether the clock frequency of the parameter of the first display signal meets the clock frequency design value; if not, executing step S31; if yes, go to step S4.
S31: and (3) refreshing the parameters of the first display signal at the input end stored in the register of the signal conversion unit, setting the flag bit as a first numerical value, and executing the step S1.
S4: determining whether the flag bit is a first numerical value; if not, executing the step S1; if yes, step S51 is performed.
S51: configuring a first display signal at the input end of the signal conversion unit;
s52: initializing a time sequence control unit;
s53: configuring a second display signal at the output end of the signal conversion unit;
s54: the flag bit is set to a second value, after which step S1 is performed.
Optionally, a flowchart of a control method of the control circuit according to the embodiment of the present application is shown in fig. 5, and the control method includes periodically detecting a parameter of the first display signal received by the signal conversion unit, where a detection period includes:
s1: acquiring parameters of a first display signal;
s22: determining whether the resolution of the parameter of the first display signal meets a resolution design value; if not, executing step S31; if yes, go to step S4.
S31: and (3) refreshing the parameters of the first display signal at the input end stored in the register of the signal conversion unit, setting the flag bit as a first numerical value, and executing the step S1.
S4: determining whether the flag bit is a first numerical value; if not, executing the step S1; if yes, step S51 is performed.
S51: configuring a first display signal at the input end of the signal conversion unit;
s52: initializing a time sequence control unit;
s53: configuring a second display signal at the output end of the signal conversion unit;
s54: the flag bit is set to a second value, after which step S1 is performed.
Optionally, a flowchart of a control method of the control circuit according to the embodiment of the present application is shown in fig. 6, and the control method includes periodically detecting a parameter of the first display signal received by the signal conversion unit, where a detection period includes:
s1: acquiring parameters of a first display signal;
s21: determining whether the clock frequency of the parameter of the first display signal meets the clock frequency design value; if not, executing step S31; if yes, go to step S4.
S22: determining whether the resolution of the parameter of the first display signal meets a resolution design value; if not, executing step S31; if yes, go to step S4.
S31: and (3) refreshing the parameters of the first display signal at the input end stored in the register of the signal conversion unit, setting the flag bit as a first numerical value, and executing the step S1.
S4: determining whether the flag bit is a first numerical value; if not, executing the step S1; if yes, step S51 is performed.
S51: configuring a first display signal at the input end of the signal conversion unit;
s52: initializing a time sequence control unit;
s53: configuring a second display signal at the output end of the signal conversion unit;
s54: the flag bit is set to a second value, after which step S1 is performed. Optionally, the display device is a medical display, taking an electrotome test of the medical display as an example, the display panel is an LCD (Liquid Crystal Display ), the first control unit 11 is an MCU (micro controller), the signal conversion unit 12 is a Bridge IC (Bridge chip), the first display signal is an LVDS signal, the second display signal is an MIPI signal, and the abnormal cycle detection and self-recovery working principle is described.
Referring to fig. 2 and 6, the embodiment of the application realizes abnormal cycle detection and self-recovery of signals by adding an MCU control unit on an LCD display module. The system on a chip outputs LVDS signals, the LVDS signals are converted into MIPI signals required by an LCD module after being converted by a Bridge IC, the MCU configures the Bridge IC, meanwhile, data of an internal register of the Bridge IC is detected, and when electromagnetic interference exists, the medical display can recover automatically through monitoring the accuracy of the data in real time.
Specifically, after the system power is turned on, the Bridge IC receives the LVDS signal output by the system on the data of the slice register and writes the LVDS signal into the corresponding register, and the MCU reads and judges whether the LVDS CLK value satisfies the clock frequency design value (for example, whether the LVDSCLK value satisfies the clock frequency of 47MHz, etc.), whether the resolution satisfies the resolution design value (for example, whether the resolution value is 1366×768, etc.), if the clock frequency design value and the resolution design value are satisfied, the input end and the output end of the Bridge IC are configured, and after the configuration is successful, the output is performed, and the picture is normally displayed.
Specifically, a FLAG parameter is set to judge whether the input end is over-reset, when the FLAG is a first value 1, the FLAG indicates that the input end is over-reset, and the input end and the output end need to be reconfigured; when FLAG bit FLAG is a second value of 0, it indicates that the input end is reset and needs to be detected again.
When electromagnetic interference exists in a medical application scene, a high-frequency electric knife is taken as an example, when the electric knife is used, stronger electromagnetic interference exists to cause errors in data of an input LVDS signal, at the moment, an MCU can detect clock CLK or resolution data abnormality, at the moment, the input end of a Bridge IC is reset, a first value 1 is set on FLAG, CLK and resolution data are repeatedly detected, a time interval is 20ms, the input end and the output end of the Bridge IC are configured until parameters are detected to be correct, and after the configuration of the input end and the output end is completed, the Bridge IC can complete the conversion of signals according to a design format and hardware wiring. Meanwhile, a time sequence control unit (an initialization display panel) is initialized, and the FLAG is set to a second value of 0, so that after electromagnetic interference disappears, the medical display can be immediately and automatically recovered, and normal display is realized. When the FLAG bit FLAG is the second value 0, the MCU continuously and circularly detects the signal parameters, and the data is not processed when the data is normal.
Based on the same inventive concept, a computer-readable storage medium has stored thereon a computer program, which is characterized in that the computer program, when executed by an electronic device, implements any of the control methods provided by the embodiments of the present application.
The present embodiments provide various alternative implementations of a computer readable storage medium suitable for use in any of the control methods described above. And will not be described in detail herein.
By applying the embodiment of the application, at least the following beneficial effects can be realized:
according to the control circuit provided by the embodiment of the application, through the first control unit 11, the parameters of the first display signal are periodically detected, when the signal is interfered and has abnormality, namely, after the first control unit obtains the parameter abnormality of the first display signal, the time sequence data of the first display signal at the input end of the signal conversion unit 12 is reset until the parameter of the first display signal accords with the parameter design value, and when the flag bit is a first numerical value (namely, the time sequence data of the first display signal at the input end of the signal conversion unit 12 is reset), the signal conversion unit 12 is reconfigured and the time sequence control unit 13 is initialized, so that the reliability of the display device can be improved, and the normal display can be automatically recovered after the electromagnetic interference disappears.
That is, the embodiment of the present application is applied to the field of medical display devices by constructing the first control unit 11 cycle detection method, and by continuously detecting the input signal (i.e., the first display signal) and reconfiguring the input signal when detecting that the input signal is abnormal, the effect that the display device can recover by itself under the condition of strong electromagnetic interference is achieved, and the stability and reliability of the display device under the medical application scenario of strong interference are ensured. According to the embodiment of the application, the judgment and self-recovery mechanism of strong electromagnetic interference is realized through a software flow, components such as a steel mesh and a filter are not required to be additionally arranged, and the interference shielding cost is reduced. Moreover, the embodiment of the application also provides a solution for electromagnetic interference of other products.
Those of skill in the art will appreciate that the various operations, methods, steps in the flow, actions, schemes, and alternatives discussed in the present application may be alternated, altered, combined, or eliminated. Further, other steps, means, or steps in a process having various operations, methods, or procedures discussed in this application may be alternated, altered, rearranged, split, combined, or eliminated. Further, steps, measures, schemes in the prior art with various operations, methods, flows disclosed in the present application may also be alternated, altered, rearranged, decomposed, combined, or deleted.
The terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present application, unless otherwise indicated, the meaning of "a plurality" is two or more.
In the description of the present application, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the terms in this application will be understood by those of ordinary skill in the art in a specific context.
In the description of the present specification, a particular feature, structure, material, or characteristic may be combined in any suitable manner in one or more embodiments or examples.
It should be understood that, although the steps in the flowcharts of the figures are shown in order as indicated by the arrows, these steps are not necessarily performed in order as indicated by the arrows. The steps are not strictly limited in order and may be performed in other orders, unless explicitly stated herein. Moreover, at least some of the steps in the flowcharts of the figures may include a plurality of sub-steps or stages that are not necessarily performed at the same time, but may be performed at different times, the order of their execution not necessarily being sequential, but may be performed in turn or alternately with other steps or at least a portion of the other steps or stages.
The foregoing is only a partial embodiment of the present application, and it should be noted that, for a person skilled in the art, several improvements and modifications can be made without departing from the principle of the present application, and these improvements and modifications should also be considered as the protection scope of the present application.
Claims (11)
1. A control circuit for use in a display device, the control circuit comprising: the device comprises a first control unit, a signal conversion unit and a time sequence control unit;
the first control unit is electrically connected with the signal conversion unit and the time sequence control unit and is used for periodically detecting parameters of the first display signal received by the signal conversion unit, and one detection period comprises: acquiring parameters of the first display signal; determining whether the parameter of the first display signal accords with a parameter design value; when the parameter of the first display signal does not accord with the parameter design value, resetting the parameter of the first display signal at the input end of the signal conversion unit, and executing the next detection period until the parameter of the first display signal accords with the parameter design value; determining whether the flag bit is a first numerical value; if not, executing the next detection period; if yes, configuring the signal conversion unit, and initializing the time sequence control unit;
after the signal conversion unit is configured and the time sequence control unit is initialized, the signal conversion unit converts an input first display signal into a second display signal, and the time sequence control unit drives the display device to display normally based on the second display signal, wherein the first display signal comprises an LVDS low-voltage differential signal, and the second display signal comprises an MIPI mobile industry processor interface signal.
2. The control circuit according to claim 1, wherein the signal conversion unit includes: a register;
the register is electrically connected with the first control unit and is used for storing parameters of the first display signal.
3. The control circuit of claim 1, wherein the control circuit further comprises:
and the monitoring unit is electrically connected with the first control unit and is used for monitoring the running state of the first control unit.
4. A display device characterized in that the display device comprises a display panel, a driving unit and the control circuit according to any one of claims 1 to 3;
the time sequence control unit, the driving unit and the display panel in the control circuit are electrically connected in sequence.
5. A control method, characterized by being applied to the control circuit according to any one of claims 1 to 3, comprising:
the periodic detection signal conversion unit receives the parameter of the first display signal, and one detection period includes:
acquiring parameters of the first display signal;
determining whether the parameter of the first display signal accords with a parameter design value; when the parameter of the first display signal does not accord with the parameter design value, resetting the parameter of the first display signal at the input end of the signal conversion unit, and executing the next detection period until the parameter of the first display signal accords with the parameter design value;
determining whether the flag bit is a first numerical value; if not, executing the next detection period; if yes, the signal conversion unit is configured, and the time sequence control unit is initialized.
6. The control method according to claim 5, wherein the acquiring the parameter of the first display signal includes:
acquiring at least one of a parameter clock frequency and a resolution of a first display signal from a register of the signal conversion unit;
and determining whether the parameter of the first display signal meets a parameter design value, including at least one of:
determining whether a clock frequency of a parameter of the first display signal meets a clock frequency design value;
determining whether the resolution of the parameter of the first display signal meets a resolution design value.
7. The control method according to claim 5, wherein resetting the parameter of the first display signal at the input of the signal conversion unit when the parameter of the first display signal does not conform to the parameter design value, comprises:
and when the parameter of the first display signal does not accord with the parameter design value, refreshing the parameter of the first display signal at the input end stored in the register of the signal conversion unit, and setting the flag bit as a first numerical value.
8. The control method of claim 7, wherein the parameters further comprise at least one of:
horizontal back shoulder time, horizontal front shoulder time, horizontal synchronization period, vertical back shoulder time, vertical front shoulder time, and vertical synchronization period.
9. The control method according to claim 5, wherein configuring the signal conversion unit and initializing the timing control unit includes:
the first display signal at the input end of the signal conversion unit is configured, the timing control unit is initialized, the second display signal at the output end of the signal conversion unit is configured, and the flag bit is set to be a second value.
10. The control method according to claim 9, wherein,
configuring a first display signal at an input end of the signal conversion unit, including: the method comprises the steps of setting an input format, the number of ports and a synchronous mode of a first display signal and setting pins of an input end;
configuring a second display signal at an output end of the signal conversion unit, including: the number of channels and timing of the second display signal.
11. A computer-readable storage medium, on which a computer program is stored, characterized in that the computer program, when executed by an electronic device, implements the control method according to any one of claims 5-10.
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