CN111161687A - Charge release method and device, storage medium and electronic equipment - Google Patents
Charge release method and device, storage medium and electronic equipment Download PDFInfo
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- CN111161687A CN111161687A CN201911276838.2A CN201911276838A CN111161687A CN 111161687 A CN111161687 A CN 111161687A CN 201911276838 A CN201911276838 A CN 201911276838A CN 111161687 A CN111161687 A CN 111161687A
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- 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
- G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
- G09G3/34—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source
- G09G3/36—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source using liquid crystals
Abstract
The embodiment of the application discloses a charge release method, a charge release device, a storage medium and electronic equipment, wherein the method comprises the following steps: the working state of the gamma chip in the board card system is acquired, the board card system is connected with the liquid crystal display screen, when the working state is the power-off state, the discharge switch connected with the gamma chip is started, the output end of the discharge switch is grounded, and the residual charge of the liquid crystal display screen is controlled to pass through the output end of the discharge switch for outputting. By adopting the embodiment of the application, the electric charge is quickly released when the device is shut down, and the image sticking phenomenon of the liquid crystal display screen is solved.
Description
Technical Field
The present disclosure relates to the field of computer technologies, and in particular, to a method and an apparatus for releasing charges, a storage medium, and an electronic device.
Background
With the rapid application of liquid crystal display technology, various liquid crystal display devices such as mobile phones, tablet computers, televisions, conference tablets, displays, electronic billboards and the like are gradually merged into the lives of people, and great convenience is brought to the daily production and life of people.
At present, after a system stops providing signals and power to the liquid crystal display device, namely after the liquid crystal display device is powered off, charges of a liquid crystal capacitor and a storage capacitor contained in the liquid crystal display device are not released immediately, but are released slowly along with time, so that a picture before shutdown is displayed on a screen of the liquid crystal display device in a residual mode, namely, an image residual phenomenon during shutdown is caused, and image experience of a user is influenced.
Disclosure of Invention
The embodiment of the application provides a charge release method, a charge release device, a storage medium and electronic equipment, which can quickly release charges when the electronic equipment is shut down and solve the problem of image sticking of a liquid crystal display screen. The technical scheme is as follows:
in a first aspect, an embodiment of the present application provides a charge discharging method, including:
acquiring the working state of a gamma chip in a board card system, wherein the board card system is connected with a liquid crystal display screen;
when the working state is a power-off state, a discharge switch connected with the gamma chip is turned on, and the output end of the discharge switch is grounded;
and controlling the residual charge of the liquid crystal display screen to be output through the output end of the discharge switch.
In a second aspect, an embodiment of the present application provides a charge discharging apparatus, including:
the working state acquisition module is used for acquiring the working state of a gamma chip in the board card system, and the board card system is connected with the liquid crystal display screen;
the discharge switch starting module is used for starting a discharge switch connected with the gamma chip when the working state is a power-off state, and the output end of the discharge switch is grounded;
and the residual charge output module is used for controlling the residual charge of the liquid crystal display screen to be output through the output end of the discharge switch.
In a third aspect, embodiments of the present application provide a computer storage medium storing a plurality of instructions adapted to be loaded by a processor and to perform the above-mentioned method steps.
In a fourth aspect, an embodiment of the present application provides an electronic device, which may include: a processor and a memory; wherein the memory stores a computer program adapted to be loaded by the processor and to perform the above-mentioned method steps.
The beneficial effects brought by the technical scheme provided by some embodiments of the application at least comprise:
in one or more embodiments of this application, central processing unit obtains the operating condition of gamma chip in the integrated circuit board system of being connected with liquid crystal display, works as when operating condition is the outage state, open with the discharge switch that gamma chip is connected, discharge switch's output ground connection controls liquid crystal display's residual charge passes through discharge switch's output is exported. When the working state of the gamma chip is detected to be the power-off state, the discharge switch connected with the gamma chip is opened, so that the residual charges of the liquid crystal display screen can be controlled to be rapidly released to the ground through the output end of the discharge switch, and the phenomenon of image residue when the liquid crystal display screen is shut down can be effectively solved.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a schematic flow chart of a charge discharging method according to an embodiment of the present disclosure;
fig. 2 is a schematic view of a scene of voltages at two sides of a liquid crystal involved in a charge discharging method provided in an embodiment of the present application;
fig. 3 is a schematic circuit diagram of a discharge switch involved in a charge discharging method according to an embodiment of the present application;
FIG. 4 is a schematic flow chart of another charge discharging method provided in the embodiments of the present application;
fig. 5 is a schematic structural diagram of a triode discharge circuit according to a charge discharging method provided in an embodiment of the present application;
fig. 6 is a schematic structural diagram of a charge discharging apparatus according to an embodiment of the present application;
fig. 7 is a schematic structural diagram of another charge discharging apparatus provided in the embodiment of the present application;
fig. 8 is a schematic structural diagram of an electronic device according to an embodiment of the present application.
Detailed Description
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. 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.
In the description of the present application, it is to be understood that 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. In the description of the present application, it is noted that, unless explicitly stated or limited otherwise, "including" and "having" and any variations thereof, are intended to cover non-exclusive inclusions. For example, a process, method, system, article, or apparatus that comprises a list of steps or elements is not limited to only those steps or elements listed, but may alternatively include other steps or elements not listed, or inherent to such process, method, article, or apparatus. 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. Further, in the description of the present application, "a plurality" means two or more unless otherwise specified. "and/or" describes the association relationship of the associated objects, meaning that there may be three relationships, e.g., a and/or B, which may mean: a exists alone, A and B exist simultaneously, and B exists alone. The character "/" generally indicates that the former and latter associated objects are in an "or" relationship.
The present application will be described in detail with reference to specific examples.
In one embodiment, as shown in fig. 1, a charge discharging method is proposed, which can be implemented by means of a computer program and can be run on a charge discharging device based on the von neumann architecture. The computer program may be integrated into the application or may run as a separate tool-like application.
Specifically, the charge discharging method includes:
step 101: and acquiring the working state of a gamma chip in the board card system, wherein the board card system is connected with the liquid crystal display screen.
The board card system is a main part of a liquid crystal display device, and generally comprises a Central Processing Unit (CPU), a power supply board card, an I/O board card, a Gamma chip (Gamma IC), a timing control chip (Tcon IC), and various functional board cards, and is connected with a liquid crystal display screen. The board card system typically provides data, voltage, control signals, etc. for the liquid crystal display for display.
The liquid crystal display screen is a display adopting liquid crystal as a material. The liquid crystal is an organic compound between solid and liquid, and has the liquidity of liquid and the optical anisotropy of crystal at normal temperature, and can be changed into transparent liquid when heated and be changed into a crystallized turbid solid after cooled. Under the action of the electric field, the liquid crystal molecules are arranged to change, so that the incident light beam penetrates through the liquid crystal to generate intensity change, and the intensity change is further represented as light and shade change through the action of the polarizer. Accordingly, the brightness change of the light can be realized by controlling the liquid crystal electric field (for example, by controlling the voltage at the two sides of the liquid crystal), thereby achieving the purpose of displaying the image information (such as the image).
The Gamma chip is connected with a power supply board card (PWM IC), and the Gamma chip can output Gamma voltage and common electrode voltage (Vcom). The Gamma voltage is determined by the input data (multimedia data), also called data voltage-Vdate. In a specific implementation scenario, as shown in fig. 2, fig. 2 is a schematic diagram of a voltage scenario across a liquid crystal. In fig. 2, the Vdate voltage and the common electrode voltage (Vcom) outputted from the gamma chip are respectively provided at two sides of the liquid crystal, and the image content of the liquid crystal display is determined by the difference between the Vdate voltage and the common electrode voltage (Vcom) at two sides of the liquid crystal. Vdate is used to control the gray scale of the display, and generally, the change process from white to black is divided into G0-G14, and the difference between different Vdate voltages and Vcom voltages determines the different inversion (or rotation) angles of the liquid crystal, so as to form the difference of brightness.
Specifically, the operating state of the gamma chip may be roughly divided into a power-off state and a power-on state, where the power-off state may be understood as a corresponding operating state in a power-off mode or a standby mode, and in the power-off state, no voltage (Vdate voltage or Vcom voltage) is input to the liquid crystal display, that is, no image is displayed. The power-on state can be understood as a corresponding working state in a power-on mode, and in the power-on mode, the voltage of the liquid crystal display screen is normally input, namely, a corresponding image is displayed.
In practical application, the central processing unit may monitor the working state of the gamma chip in real time, and may send an acquisition instruction of the working state to the gamma chip in a certain monitoring period (for example, 1 s). The instructions are instructions and commands directing the operation of an electronic device (e.g., a gamma chip), and may be understood as code specifying certain controls for performing certain operations or functional implementations. The acquisition instruction can be understood as a code for directing the gamma chip to execute a feedback working state function in the embodiment of the application.
After receiving the acquisition instruction, the gamma chip feeds back the working state data representing the working state to the central processing unit by executing the code corresponding to the acquisition instruction, and if so, feeds back the working state data representing the power-off state to the central processing unit. And after receiving the working state data, the central processing unit analyzes the working state data, and based on an analysis result after analysis, the working state of the gamma chip indicated by the analysis result can be obtained.
Optionally, the obtaining of the working state of the gamma chip in the board card system may be that the central processing unit actively sends state update information to the central processing unit in a certain monitoring period (for example, 1s) based on the gamma chip, for example: the gamma chip may send status update data representing the operating status to the central processor every 100 ms. After receiving the state updating data, the central processing unit can analyze the working state data, and based on an analysis result after the analysis processing, the working state of the gamma chip indicated by the analysis result can be obtained.
Step 102: and when the working state is a power-off state, a discharge switch connected with the gamma chip is turned on, and the output end of the discharge switch is grounded.
The discharge switch is an electronic component capable of opening a discharge circuit and interrupting a discharge current, and the electronic component may be a device having one or more electronic contacts, a transistor, a diode, or the like, or a discharge module having a function of opening a discharge circuit and interrupting a discharge current and composed of a plurality of electronic components, for example, a discharge module composed of a capacitor and a diode, or the like.
The discharge switch is connected with the gamma chip, wherein the output end of the discharge switch is connected with the ground, namely the output end is grounded. In practical application, after the discharge switch is turned on, residual charges on the liquid crystal display screen can be controlled to be led into the ground through the output end in a power-off state. Thereby reach the effect that releases the residual charge on the liquid crystal display in the twinkling of an eye that the terminal is in the outage state.
In the embodiment of the present application, the operation mode of the liquid crystal display device indicated by the power-off state may be an off mode, a standby mode, an audio mode, and the like.
In a specific implementation scenario, a user may input an audio mode start instruction through a remote control device (e.g., a remote controller) of the liquid crystal display device, and the liquid crystal display device receives the instruction to start the audio mode. The audio mode may be understood that the liquid crystal display device only plays audio and does not play video, that is, the liquid crystal display screen and the electronic device for liquid crystal display included in the liquid crystal display device are in a non-operating state.
Specifically, after receiving the working state data of the gamma chip, the central processing unit analyzes the working state data and extracts keywords or key feature information in the working state data.
The keyword may be in the form of a letter, a number, a symbol, or the like for characterizing the working state, and the key feature information may be a key identifier for characterizing the working state, a feature character for characterizing the working state, a feature stack for characterizing the working state, or the like, or may be a linear table for characterizing the working state.
Specifically, after extracting the keyword or the key feature information in the working state data, the central processing unit performs matching based on the keyword or the key feature information. Such as: the central processing unit splits the working state data, extracts keywords in the working state data, wherein the keywords can be understood as a string of codes and a string of characters in the embodiment of the application, matches the characters with sample keywords in a character library, and the character library stores at least one sample keyword and a working state corresponding to the sample keyword. After the matching, the central processing unit can obtain the working state corresponding to the keyword.
Specifically, when the operating state is the power-off state, the liquid crystal display is in the power-off state, that is, the image is not displayed, the central processing unit turns on the discharge switch connected with the gamma chip, and the discharge circuit corresponding to the liquid crystal display, the gamma chip and the discharge switch is controlled to be switched on.
Optionally, the discharge switch connected to the gamma chip is usually turned on, and an on condition for turning on the discharge switch needs to be satisfied, where the on condition may be: the voltage present on the circuit reaches a turn-on voltage threshold, the current present on the circuit reaches a turn-on current threshold, and so on.
In a specific implementation scenario, the cpu may control to turn on the discharge switch connected to the gamma chip with a turn-on voltage higher than the turn-on voltage threshold.
In a specific implementation scenario, the cpu may control to turn on the discharge switch connected to the gamma chip with a conduction current higher than the conduction voltage threshold.
Step 103: and controlling the residual charge of the liquid crystal display screen to be output through the output end of the discharge switch.
Specifically, when the operating state is the power-off state, after the cpu turns on the discharge switch connected to the gamma chip, the discharge circuit corresponding to the liquid crystal display, the gamma chip, and the discharge switch is turned on, and at this time, residual charges in the liquid crystal display and the electronic components (such as the liquid crystal capacitor) controlling the liquid crystal display are quickly introduced to the ground through the discharge circuit.
In a specific embodiment, as shown in fig. 3, fig. 3 is a schematic circuit diagram including a discharge switch, as shown in fig. 3, the discharge switch may be an electronic switch as shown in fig. 3, the electronic switch may be a temperature controlled switch, a digital switch, a voltage/current comparison switch, or the like, when the cpu detects that the operating state is the power-off state, the cpu sends a control signal to the electronic switch, and the electronic switch, after receiving the control signal, analyzes the control signal, and turns on the electronic switch according to the analysis result, so as to turn on a discharge circuit corresponding to the electronic switch.
Such as: when the electronic switch is a digital switch, the control signal "0X 00" represents on, and the control signal "0X 10" represents off. When the central processing unit sends a control signal- "0X 00" to the electronic switch, the electronic switch conducts the discharge circuit corresponding to the electronic switch, and the residual charge of the liquid crystal display screen is controlled to be output through the output end of the electronic switch.
Such as: when the electronic switch is a voltage/current comparison switch, the electronic switch corresponds to a voltage/current threshold, and if the voltage/current of the current circuit is higher than the voltage/current threshold, the electronic switch is turned on. When the central processing unit detects that the working state is the power-off state, the circuit voltage/current higher than the voltage/current threshold value is input to the electronic switch so as to enable the electronic switch to be conducted, and the residual charge of the liquid crystal display screen is controlled to be output through the output end of the electronic switch.
In this application embodiment, central processing unit acquires the operating condition of gamma chip in the integrated circuit board system of being connected with liquid crystal display, works as operating condition is when the outage state, open with the discharge switch that gamma chip is connected, discharge switch's output ground connection, control liquid crystal display's residual charge passes through discharge switch's output is exported. When the working state of the gamma chip is detected to be the power-off state, the discharge switch connected with the gamma chip is opened, so that the residual charges of the liquid crystal display screen can be controlled to be rapidly released to the ground through the output end of the discharge switch, and the phenomenon of image residue when the liquid crystal display screen is shut down can be effectively solved.
Referring to fig. 4, fig. 4 is a schematic flow chart of another embodiment of a charge discharging method according to the present application. Specifically, the method comprises the following steps:
step 201: and acquiring a piezoelectric monitoring signal in the gamma chip, and detecting whether the piezoelectric monitoring signal is a power-off indicating signal.
The signal is a physical quantity representing information, for example, the electrical signal may represent different information through changes of amplitude, frequency and phase, generally the electrical signal includes an analog signal and a digital signal, in this embodiment, the piezoelectric monitoring signal may be one of the electrical signals. The piezoelectric monitoring signal may be understood as a signal for characterizing a voltage or a current, for example, a specific value of the voltage or the current may be characterized.
The power-off indication signal may be understood as one of the piezoelectric monitoring signals, and in the embodiment of the present application, may be understood as the piezoelectric monitoring signal when the gamma chip is in a power-off state.
Specifically, the piezoelectric monitoring signal is usually stored in a register of the Gamma chip, and when the Gamma chip outputs a Gamma voltage and a common electrode voltage (Vcom), the Gamma chip can record and store the output voltage in real time in the register included in the Gamma chip. And when an acquisition instruction aiming at the working state sent by the central processing unit is received, acquiring the piezoelectric monitoring signal with the nearest working time knowledge from the current time node from the register for storing the piezoelectric monitoring signal, and feeding the piezoelectric monitoring signal back to the central processing unit. At this moment, the central processing unit acquires the piezoelectric monitoring signal in the gamma chip, and then judges whether the piezoelectric monitoring signal is the piezoelectric monitoring signal of the gamma chip in a power-off state, namely detects whether the piezoelectric monitoring signal is a power-off indicating signal.
Specifically, after acquiring the piezoelectric monitoring signal, the central processing unit calls a power-off indication signal prestored in a register included in the central processing unit, and determines whether the piezoelectric monitoring signal is matched with the prestored power-off indication signal.
Specifically, the central processing unit determines whether the piezoelectric monitoring signal matches the pre-stored power-off indication signal, where the matching may be calculated based on keywords and key feature information of the piezoelectric monitoring signal or the power-off indication signal, calculate similarity of the piezoelectric monitoring signal or the power-off indication signal, calculate a similar distance for the piezoelectric monitoring signal or the power-off indication signal, calculate difference feature information for the piezoelectric monitoring signal or the power-off indication signal, and then rank or score based on the difference feature information, and so on.
Step 202: and when the piezoelectric monitoring signal is a power-off indicating signal, determining that the working state of the gamma chip is a power-off state.
Specifically, after acquiring the piezoelectric monitoring signal in the gamma chip, the central processing unit extracts the piezoelectric monitoring signal and the keyword/key feature information of the pre-stored power-off indication signal, calculates the similarity between the keyword/key feature information corresponding to the piezoelectric monitoring signal and the keyword/key feature information corresponding to the power-off indication signal, sets a similarity threshold value in advance before calculating the similarity, and determines that the piezoelectric monitoring signal is the power-off indication signal when the similarity reaches the similarity threshold value.
In a possible implementation manner, after acquiring the piezoelectric monitoring signal in the gamma chip, the central processing unit extracts the piezoelectric monitoring signal and the keyword/key feature information of the pre-stored power-off indication signal, calculates a similar distance between the keyword/key feature information corresponding to the piezoelectric monitoring signal and the keyword/key feature information corresponding to the power-off indication signal, sets a similar distance threshold in advance before calculating the similar distance, and determines that the piezoelectric monitoring signal is the power-off indication signal when the similar distance reaches the similar distance threshold.
In a possible implementation manner, after acquiring the piezoelectric monitoring signal in the gamma chip, the central processing unit extracts the piezoelectric monitoring signal and the keyword/key feature information of the pre-stored power-off indication signal, calculates a similarity level or a similarity score of the keyword/key feature information corresponding to the piezoelectric monitoring signal and the keyword/key feature information corresponding to the power-off indication signal, sets a similarity level threshold or a similarity score threshold in advance before calculating the similarity level or the similarity score, and determines that the piezoelectric monitoring signal is the power-off indication signal when the similarity level reaches the similarity level threshold or the similarity score reaches the similarity score threshold.
Specifically, after the central processing unit determines that the piezoelectric monitoring signal is a power-off indication signal, the central processing unit determines that the working state of the gamma chip is a power-off state. At this time, the liquid crystal display screen of the liquid crystal display device is in a shutdown mode or a standby mode, and in the power-off state, the liquid crystal display screen does not have voltage input, namely, does not display images.
Step 203: and inputting a conduction level to the base level of the triode, wherein the conduction level is used for conducting a passage between the liquid crystal display screen and the triode, a collector/emitter of the triode is connected with the liquid crystal display screen, and the emitter/collector of the triode is grounded.
The triode is a semiconductor device for controlling current. The function is to amplify the weak signal into an electric signal with larger amplitude value, and the electric signal is also used as a contactless switch. In the embodiments of the present application, the triode is used as a contactless switch. Generally, a triode is formed by manufacturing two PN junctions which are very close to each other on a semiconductor substrate, the whole semiconductor is divided into three parts by the two PN junctions, the middle part is a base stage, the two side parts are an emitter stage and a collector stage, and the arrangement modes include a PNP mode and an NPN mode. NMOS transistors and PMOS transistors are commonly used.
In a specific embodiment, as shown in fig. 5, fig. 5 is a schematic structural diagram of a triode discharge circuit. When the triode (Q) can be an NMOS (N-channel metal oxide semiconductor) tube, the base level of the NMOS tube is connected with one end of the central processing unit, the collector/emitter of the NMOS tube is connected with the liquid crystal display screen, and the emitter/collector of the NMOS tube is grounded. When the central processing unit inputs a high level to the base level of the NMOS tube, namely the central processing unit detects that the working state of the gamma chip is a power-off state, the conducting level input to the base level of the NMOS tube by the central processing unit is the high level. At the moment, the central processing unit can conduct a passage between the liquid crystal display screen and the triode.
When the gamma chip normally works, the input of the central processing unit is a cut-off level, namely when the central processing unit detects that the working state of the gamma chip is a non-power-off state, the cut-off level input to the base stage of the NMOS tube by the central processing unit is a low level, at the moment, the NMOS tube is in a cut-off state, namely, a circuit between the liquid crystal display screen and the triode is broken and is not conducted.
In a specific implementation manner, when the triode (Q) may be a PMOS transistor, a base of the PMOS transistor is connected to one end of the central processing unit, a collector/emitter of the PMOS transistor is connected to the liquid crystal display, and an emitter/collector of the PMOS transistor is grounded. When the central processing unit inputs a low level to the base level of the PMOS tube, namely the central processing unit detects that the working state of the gamma chip is a power-off state, the conduction level input to the base level of the PMOS tube by the central processing unit is the low level. At the moment, the central processing unit can conduct a passage between the liquid crystal display screen and the triode.
When the gamma chip normally works, the input of the central processing unit is a cut-off level, namely when the central processing unit detects that the working state of the gamma chip is a non-power-off state, the cut-off level input to the base stage of the PMOS tube by the central processing unit is a high level, at the moment, the PMOS tube is in a cut-off state, namely, a circuit between the liquid crystal display screen and the triode is broken and is not conducted.
Step 204: and inputting the residual charge of the liquid crystal display screen corresponding to the power-off state into a collector/emitter of the triode and outputting the residual charge through the emitter/collector of the triode.
The residual charge stores the charge in the plurality of liquid crystal capacitors and the storage capacitor during a power-off period of the liquid crystal display panel.
Specifically, after the central processing unit inputs a conduction level to the base level of the triode, the conduction level conducts a path between the liquid crystal display screen and the triode. When the path between the liquid crystal display screen and the triode is conducted, the emitter/collector of the triode is grounded, and then the residual charge of the liquid crystal display screen is output to the ground through the output end-emitter/collector of the triode.
Optionally, in practical applications, the number of the discharge circuits formed by the triode may be multiple, so that the effect of quickly releasing residual charges when the liquid crystal display screen is powered off is achieved.
In one possible embodiment, an auxiliary discharge circuit may be provided to neutralize the residual charge of the liquid crystal display screen when the power is off. The auxiliary discharge circuit may be composed of a neutralization element-resistor and a neutralization switch of the auxiliary circuit, wherein the neutralization switch is arranged in series with the resistor. The central processing unit controls the on-off of the neutralization switch, when the central processing unit detects that the working state of the gamma chip is a power-off state, the switch of the auxiliary discharge circuit can be turned on, and at the moment, the auxiliary circuit is turned on. The residual charge is neutralized when flowing through the auxiliary circuit, so that the effect of quickly releasing the residual charge is achieved.
Alternatively, the neutralizing element may be an electronic element such as a diode or a charge collecting capacitor.
Step 205: and when the working state of the gamma chip is detected to be switched to the power-on state, a cut-off level is input to the base level of the triode.
The power-on state is opposite to the power-off state, which can be understood as a corresponding working state in a shutdown mode or a standby mode, and in the power-off state, the liquid crystal display screen does not have voltage (Vdate voltage and Vcom voltage) input, i.e. does not display images. The power-on state can be understood as a corresponding working state in a power-on mode, and in the power-on mode, the voltage of the liquid crystal display screen is normally input, namely the liquid crystal display screen displays a corresponding image.
Specifically, after the central processing unit controls the residual charges of the liquid crystal display screen to be output through the output end of the discharge switch, the central processing unit can monitor the gamma chip continuously after monitoring that the gamma chip is in a power-off state. And monitoring whether the working state of the horse chip is a power-on state or not. The central processor may send an acquisition instruction of an operating state to the gamma chip at a certain monitoring period (e.g., 1 s). The instructions are instructions and commands directing the operation of an electronic device (e.g., a gamma chip), and may be understood as code specifying certain controls for performing certain operations or functional implementations. The acquisition quality can be understood as a code for commanding the gamma chip to execute a feedback working state function in the embodiment of the application.
Specifically, when the gamma chip is in the power-on state, the gamma chip receives the acquisition instruction, and then feeds back the working state data representing the working state to the central processing unit by executing a code corresponding to the acquisition instruction, for example, feeds back the working state data representing the power-on state to the central processing unit. And after receiving the working state data, the central processing unit analyzes the working state data, and based on an analysis result after analysis, the working state of the gamma chip indicated by the analysis result can be obtained.
Specifically, after the central processing unit receives the working state data of the gamma chip, the central processing unit analyzes the working state data, extracts keywords or key feature information in the working state data, then judges whether the keywords or key feature information are matched with the keywords or key feature information corresponding to the power-on state, and when the matching result indicates that the working state of the gamma chip is the power-on state, the central processing unit determines that the working state of the gamma chip is switched to the power-on state.
Specifically, when the working state of the gamma chip is detected to be switched to the power-on state, a cut-off level is input to the base stage of the triode. The cut-off level is used for cutting off a path between the liquid crystal display screen and the triode.
In a possible implementation, when the transistor (Q) may be an NMOS transistor, the base of the NMOS transistor is connected to one end of the cpu, the collector/emitter of the NMOS transistor is connected to the lcd, and the emitter/collector of the NMOS transistor is grounded. When the central processing unit inputs a low level to the base level of the NMOS tube, namely when the central processing unit detects that the working state of the gamma chip is the power-on state, the conducting level input to the base level of the NMOS tube by the central processing unit is the low level. At this time, the central processing unit can cut off the passage between the liquid crystal display screen and the triode.
In a possible implementation, when the transistor (Q) may be a PMOS transistor, a base of the PMOS transistor is connected to one end of the cpu, a collector/emitter of the PMOS transistor is connected to the lcd, and an emitter/collector of the PMOS transistor is grounded. When the central processing unit inputs a high level to the base level of the PMOS tube, namely the central processing unit detects that the working state of the gamma chip is the power-on state, the conduction level input to the base level of the PMOS tube by the central processing unit is a low level. At this time, the central processing unit can cut off the passage between the liquid crystal display screen and the triode.
In the embodiment of the application, a central processing unit obtains a piezoelectric monitoring signal of a gamma chip in a board card system connected with a liquid crystal display screen, detects whether the piezoelectric monitoring signal is a power-off indicating signal, determines that the working state of the gamma chip is a power-off state when the piezoelectric monitoring signal is the power-off indicating signal, inputs a conducting level to a base level of a triode, the conducting level is used for conducting a passage between the liquid crystal display screen and the triode, a collector/emitter of the triode is connected with the liquid crystal display screen, an emitter/collector of the triode is grounded, residual charges of the liquid crystal display screen corresponding to the power-off state are input to the collector/emitter of the triode and output through the emitter/collector of the triode, and when the working state of the gamma chip is detected to be switched to the power-on state, and inputting a cut-off level to the base stage of the triode. When the piezoelectricity monitor signal through detecting gamma chip is outage pilot signal, to with the level is switched on in the base level input of the triode that liquid crystal display links to each other, can switch on liquid crystal display with route between the triode, thereby will liquid crystal display's residual charge passes through triode grounded's projecting pole/collecting electrode releases to the ground fast to image remaining phenomenon when can effectively solving liquid crystal display and shutting down, simultaneously detecting when gamma chip's operating condition switches into the on-state, to the level is cut off in the base level input of triode, can cut liquid crystal display with route between the triode, the quick charge release that stops.
The following are embodiments of the apparatus of the present application that may be used to perform embodiments of the method of the present application. For details which are not disclosed in the embodiments of the apparatus of the present application, reference is made to the embodiments of the method of the present application.
Referring to fig. 6, a schematic structural diagram of a charge discharging apparatus according to an exemplary embodiment of the present application is shown. The charge discharging means may be implemented as all or part of the apparatus by software, hardware or a combination of both. The device 1 comprises an operating state acquisition module 11, a discharge switch starting module 12 and a residual charge output module 13.
The working state acquisition module 11 is used for acquiring the working state of a gamma chip in a board card system, and the board card system is connected with the liquid crystal display screen;
the discharge switch starting module 12 is configured to start a discharge switch connected to the gamma chip when the operating state is a power-off state, and an output end of the discharge switch is grounded;
and the residual charge output module 13 is used for controlling the residual charge of the liquid crystal display screen to be output through the output end of the discharge switch.
Optionally, the working state obtaining module 11 is specifically configured to:
acquiring a piezoelectric monitoring signal in the gamma chip, and detecting whether the piezoelectric monitoring signal is a power-off indicating signal;
the discharge switch turn-on module 12 is specifically configured to:
and when the piezoelectric monitoring signal is a power-off indicating signal, determining that the working state of the gamma chip is a power-off state, and starting a discharge switch connected with the gamma chip.
Optionally, the working state obtaining module 11 is specifically configured to:
and calling a power-off indication signal prestored in a register, and judging whether the piezoelectric monitoring signal is matched with the power-off indication signal or not.
Optionally, when the discharge switch is a triode, the discharge switch starting module 12 is specifically configured to:
and inputting a conduction level to the base level of the triode, wherein the conduction level is used for conducting a passage between the liquid crystal display screen and the triode, a collector/emitter of the triode is connected with the liquid crystal display screen, and the emitter/collector of the triode is grounded.
Optionally, the residual charge output module 13 is specifically configured to:
and inputting the residual charge of the liquid crystal display screen corresponding to the power-off state into a collector/emitter of the triode and outputting the residual charge through the emitter/collector of the triode.
Optionally, as shown in fig. 7, the apparatus further includes:
and the working state switching module 14 is configured to input a cut-off level to the base stage of the triode when the working state of the gamma chip is detected to be switched to the power-on state.
It should be noted that, when the charge discharging apparatus provided in the foregoing embodiment executes the charge discharging method, only the division of the functional modules is illustrated, and in practical applications, the above functions may be distributed by different functional modules according to needs, that is, the internal structure of the device may be divided into different functional modules to complete all or part of the functions described above. In addition, the charge releasing device and the charge releasing method provided by the above embodiments belong to the same concept, and details of implementation processes thereof are referred to as method embodiments, which are not described herein again.
The above-mentioned serial numbers of the embodiments of the present application are merely for description and do not represent the merits of the embodiments.
In this embodiment, a central processing unit obtains a piezoelectric monitoring signal of a gamma chip in a board card system connected to a liquid crystal display, detects whether the piezoelectric monitoring signal is a power-off indication signal, determines that a working state of the gamma chip is a power-off state when the piezoelectric monitoring signal is the power-off indication signal, inputs a conduction level to a base of a triode, the conduction level is used for conducting a path between the liquid crystal display and the triode, a collector/emitter of the triode is connected to the liquid crystal display, an emitter/collector of the triode is grounded, inputs residual charges of the liquid crystal display corresponding to the power-off state to the collector/emitter of the triode and outputs the residual charges through the emitter/collector of the triode, and when the working state of the gamma chip is detected to be switched to the power-on state, and inputting a cut-off level to the base stage of the triode. When the piezoelectricity monitor signal through detecting gamma chip is outage pilot signal, to with the level is switched on in the base level input of the triode that liquid crystal display links to each other, can switch on liquid crystal display with route between the triode, thereby will liquid crystal display's residual charge passes through triode grounded's projecting pole/collecting electrode releases to the ground fast to image remaining phenomenon when can effectively solving liquid crystal display and shutting down, simultaneously detecting when gamma chip's operating condition switches into the on-state, to the level is cut off in the base level input of triode, can cut liquid crystal display with route between the triode, the quick charge release that stops.
An embodiment of the present application further provides a computer storage medium, where the computer storage medium may store a plurality of instructions, and the instructions are suitable for being loaded by a processor and executing the charge release method according to the embodiments shown in fig. 1 to fig. 5, and a specific execution process may refer to specific descriptions of the embodiments shown in fig. 1 to fig. 5, which is not described herein again.
The present application further provides a computer program product, where at least one instruction is stored, and the at least one instruction is loaded by the processor and executes the charge release method according to the embodiment shown in fig. 1 to 5, and a specific execution process may refer to specific descriptions of the embodiment shown in fig. 1 to 5, which is not described herein again.
Please refer to fig. 8, which is a schematic structural diagram of an electronic device according to an embodiment of the present disclosure. As shown in fig. 8, the electronic device 1000 may include: at least one processor 1001, at least one network interface 1004, a user interface 1003, memory 1005, at least one communication bus 1002.
Wherein a communication bus 1002 is used to enable connective communication between these components.
The user interface 1003 may include a Display screen (Display) and a Camera (Camera), and the optional user interface 1003 may also include a standard wired interface and a wireless interface.
The network interface 1004 may optionally include a standard wired interface, a wireless interface (e.g., WI-FI interface), among others.
The Memory 1005 may include a Random Access Memory (RAM) or a Read-Only Memory (Read-Only Memory). Optionally, the memory 1005 includes a non-transitory computer-readable medium. The memory 1005 may be used to store an instruction, a program, code, a set of codes, or a set of instructions. The memory 1005 may include a stored program area and a stored data area, wherein the stored program area may store instructions for implementing an operating system, instructions for at least one function (such as a touch function, a sound playing function, an image playing function, etc.), instructions for implementing the various method embodiments described above, and the like; the storage data area may store data and the like referred to in the above respective method embodiments. The memory 1005 may optionally be at least one memory device located remotely from the processor 1001. As shown in fig. 8, a memory 1005, which is a kind of computer storage medium, may include therein an operating system, a network communication module, a user interface module, and a charge discharging application program.
In the electronic device 1000 shown in fig. 8, the user interface 1003 is mainly used as an interface for providing input for a user, and acquiring data input by the user; and the processor 1001 may be configured to call the charge-discharging application stored in the memory 1005, and specifically perform the following operations:
acquiring the working state of a gamma chip in a board card system, wherein the board card system is connected with a liquid crystal display screen;
when the working state is a power-off state, a discharge switch connected with the gamma chip is turned on, and the output end of the discharge switch is grounded;
and controlling the residual charge of the liquid crystal display screen to be output through the output end of the discharge switch.
In an embodiment, when the processor 1001 executes the working state of the gamma chip in the card system, the following operations are specifically executed:
acquiring a piezoelectric monitoring signal in the gamma chip, and detecting whether the piezoelectric monitoring signal is a power-off indicating signal;
when the operating condition of gamma chip is the outage state, open with the discharge switch that the gamma chip is connected includes:
and when the piezoelectric monitoring signal is a power-off indicating signal, determining that the working state of the gamma chip is a power-off state, and starting a discharge switch connected with the gamma chip.
In an embodiment, when performing the detecting whether the piezoelectric monitoring signal is a power-off indication signal, the processor 1001 specifically performs the following operations:
and calling a power-off indication signal prestored in a register, and judging whether the piezoelectric monitoring signal is matched with the power-off indication signal or not.
In an embodiment, when the discharge switch is a triode, the processor 1001 specifically performs the following operations when the discharge switch connected to the gamma chip is turned on:
and inputting a conduction level to the base level of the triode, wherein the conduction level is used for conducting a passage between the liquid crystal display screen and the triode, a collector/emitter of the triode is connected with the liquid crystal display screen, and the emitter/collector of the triode is grounded.
In one embodiment, when the processor 1001 performs the control to output the residual charge of the liquid crystal display screen through the output terminal of the discharge switch, the following operations are specifically performed:
and inputting the residual charge of the liquid crystal display screen corresponding to the power-off state into a collector/emitter of the triode and outputting the residual charge through the emitter/collector of the triode.
In one embodiment, after performing the control to output the residual charge of the liquid crystal display through the output terminal of the discharge switch, the processor 1001 further performs the following operations:
and when the working state of the gamma chip is detected to be switched to the power-on state, a cut-off level is input to the base level of the triode.
In this embodiment, a central processing unit obtains a piezoelectric monitoring signal of a gamma chip in a board card system connected to a liquid crystal display, detects whether the piezoelectric monitoring signal is a power-off indication signal, determines that a working state of the gamma chip is a power-off state when the piezoelectric monitoring signal is the power-off indication signal, inputs a conduction level to a base of a triode, the conduction level is used for conducting a path between the liquid crystal display and the triode, a collector/emitter of the triode is connected to the liquid crystal display, an emitter/collector of the triode is grounded, inputs residual charges of the liquid crystal display corresponding to the power-off state to the collector/emitter of the triode and outputs the residual charges through the emitter/collector of the triode, and when the working state of the gamma chip is detected to be switched to the power-on state, and inputting a cut-off level to the base stage of the triode. When the piezoelectricity monitor signal through detecting gamma chip is outage pilot signal, to with the level is switched on in the base level input of the triode that liquid crystal display links to each other, can switch on liquid crystal display with route between the triode, thereby will liquid crystal display's residual charge passes through triode grounded's projecting pole/collecting electrode releases to the ground fast to image remaining phenomenon when can effectively solving liquid crystal display and shutting down, simultaneously detecting when gamma chip's operating condition switches into the on-state, to the level is cut off in the base level input of triode, can cut liquid crystal display with route between the triode, the quick charge release that stops.
It will be understood by those skilled in the art that all or part of the processes of the methods of the embodiments described above can be implemented by a computer program, which can be stored in a computer-readable storage medium, and when executed, can include the processes of the embodiments of the methods described above. The storage medium may be a magnetic disk, an optical disk, a read-only memory or a random access memory.
The above disclosure is only for the purpose of illustrating the preferred embodiments of the present application and is not to be construed as limiting the scope of the present application, so that the present application is not limited thereto, and all equivalent variations and modifications can be made to the present application.
Claims (10)
1. A method of discharging electric charge, the method comprising:
acquiring the working state of a gamma chip in a board card system, wherein the board card system is connected with a liquid crystal display screen;
when the working state is a power-off state, a discharge switch connected with the gamma chip is turned on, and the output end of the discharge switch is grounded;
and controlling the residual charge of the liquid crystal display screen to be output through the output end of the discharge switch.
2. The method of claim 1, wherein the obtaining the operating state of the gamma chip in the board card system comprises:
acquiring a piezoelectric monitoring signal in the gamma chip, and detecting whether the piezoelectric monitoring signal is a power-off indicating signal;
when the operating condition of gamma chip is the outage state, open with the discharge switch that the gamma chip is connected includes:
and when the piezoelectric monitoring signal is a power-off indicating signal, determining that the working state of the gamma chip is a power-off state, and starting a discharge switch connected with the gamma chip.
3. The method of claim 2, wherein said detecting whether the piezoelectric monitoring signal is a power-off indication signal comprises:
and calling a power-off indication signal prestored in a register, and judging whether the piezoelectric monitoring signal is matched with the power-off indication signal or not.
4. The method of claim 1, wherein when the discharge switch is a triode, the turning on the discharge switch connected to the gamma chip comprises:
and inputting a conduction level to the base level of the triode, wherein the conduction level is used for conducting a passage between the liquid crystal display screen and the triode, a collector/emitter of the triode is connected with the liquid crystal display screen, and the emitter/collector of the triode is grounded.
5. The method of claim 4, wherein the controlling the residual charge of the liquid crystal display panel to be output through the output terminal of the discharge switch comprises:
and inputting the residual charge of the liquid crystal display screen corresponding to the power-off state into a collector/emitter of the triode and outputting the residual charge through the emitter/collector of the triode.
6. The method of claim 4, further comprising, after controlling the residual charge of the liquid crystal display panel to be output through the output terminal of the discharge switch:
and when the working state of the gamma chip is detected to be switched to the power-on state, a cut-off level is input to the base level of the triode.
7. A charge discharge apparatus, comprising:
the working state acquisition module is used for acquiring the working state of a gamma chip in the board card system, and the board card system is connected with the liquid crystal display screen;
the discharge switch starting module is used for starting a discharge switch connected with the gamma chip when the working state is a power-off state, and the output end of the discharge switch is grounded;
and the residual charge output module is used for controlling the residual charge of the liquid crystal display screen to be output through the output end of the discharge switch.
8. The apparatus according to claim 7, wherein the operating state obtaining module is specifically configured to:
acquiring a piezoelectric monitoring signal in the gamma chip, and detecting whether the piezoelectric monitoring signal is a power-off indicating signal;
the discharge switch turn-on module includes:
and when the piezoelectric monitoring signal is a power-off indicating signal, determining that the working state of the gamma chip is a power-off state, and starting a discharge switch.
9. A computer storage medium, characterized in that it stores a plurality of instructions adapted to be loaded by a processor and to perform the method steps according to any of claims 1 to 6.
10. An electronic device, comprising: a processor and a memory; wherein the memory stores a computer program adapted to be loaded by the processor and to perform the method steps of any of claims 1 to 6.
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