CN113920953A - Electrophoretic display device, control method, and computer-readable storage medium - Google Patents
Electrophoretic display device, control method, and computer-readable storage medium Download PDFInfo
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- CN113920953A CN113920953A CN202111350224.1A CN202111350224A CN113920953A CN 113920953 A CN113920953 A CN 113920953A CN 202111350224 A CN202111350224 A CN 202111350224A CN 113920953 A CN113920953 A CN 113920953A
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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
- G09G3/20—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
- G09G3/3433—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 light modulating elements actuated by an electric field and being other than liquid crystal devices and electrochromic devices
- G09G3/344—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 light modulating elements actuated by an electric field and being other than liquid crystal devices and electrochromic devices based on particles moving in a fluid or in a gas, e.g. electrophoretic devices
Abstract
The embodiment of the present disclosure provides an electrophoretic display device, which can avoid the restart of the electrophoretic display device caused by the failed start-up of an electrophoretic display panel. The electrophoretic display device includes: power module, treater, on-off control circuit and electrophoresis display panel, wherein: the power supply module is used for supplying power to the processor and providing starting voltage for the electrophoresis display panel; the processor is used for detecting a monitoring voltage and sending a first control signal to the switch control circuit when the monitoring voltage is equal to or lower than a preset fault voltage threshold value; the monitoring voltage comprises an output voltage of a power module or an input voltage of an electrophoretic display panel, and the preset fault voltage threshold is higher than a fault voltage value; the switch control circuit is used for disconnecting a path between the power supply module and the electrophoretic display panel according to the first control signal sent by the processor; the electrophoresis display panel is used for displaying. The running of the electrophoretic display device is more stable.
Description
Technical Field
The embodiment of the disclosure relates to the field of Display, and in particular relates to an electrophoretic Display (EPD) device, a control method and a computer-readable storage medium.
Background
The electrophoretic display technology is a display technology in which the distribution of charged pigment particles is controlled by an electric field, and the reflectivity of a display area to ambient light is changed to generate a display effect. Such a display device can be viewed using an ambient light source and has low power consumption, and is one of important technologies for developing electronic paper.
However, when the EPD device fails in the boot stage, it is usually tried to restart the EPD device repeatedly until the EPD device is successfully booted. When the EPD device fails in the operation process, the device can be restarted. If the equipment still cannot work after being restarted, the equipment is frequently restarted, and the processing cannot be performed at present.
Disclosure of Invention
The embodiment of the disclosure provides an EPD device, a control method and a computer-readable storage medium, which avoid the restart of an EPD device caused by the failed starting of an EPD panel.
In one aspect, an embodiment of the present disclosure provides an EPD device, including: power module, treater, switch control circuit and EPD panel, wherein:
the power module is used for supplying power to the processor and providing starting voltage for the EPD panel;
the processor is used for detecting a monitoring voltage and sending a first control signal to the switch control circuit when the monitoring voltage is equal to or lower than a preset fault voltage threshold value; the monitoring voltage comprises an output voltage of a power module or an input voltage of an EPD panel, and the preset fault voltage threshold is higher than a fault voltage value;
the switch control circuit is used for disconnecting a path between the power supply module and the EPD panel according to the first control signal sent by the processor;
the EPD panel is used for displaying.
On the other hand, the embodiment of the present disclosure further provides an EPD device control method, which is used for the aforementioned EPD device, and the control method includes:
detecting a monitoring voltage, and judging whether the monitoring voltage is equal to or lower than a preset fault voltage threshold value; the monitoring voltage comprises an output voltage of a power module or an input voltage of an EPD panel, and the preset fault voltage threshold is higher than a fault voltage value;
and responding to the monitoring voltage lower than a preset fault voltage threshold value, and sending a first control signal to a switch control circuit to enable the switch control circuit to break a path between the power supply module and the EPD panel.
In still another aspect, embodiments of the present disclosure further provide a computer-readable storage medium storing a computer program executable on a processor, where the computer program is used to implement the EPD device control method described above when executed by the processor.
According to the method provided by the embodiment of the disclosure, the monitoring voltage is detected by the processor, and when the monitoring voltage is found to possibly cause the processor to be incapable of working normally, the switch control circuit is controlled to disconnect the path between the power module and the EPD panel, that is, the power supply of the EPD panel is closed, so that the problem that the starting of the EPD panel at the starting stage fails or the running stage fails to cause the restarting of the whole EPD device is fundamentally avoided, and the running of the EPD device can be more stable.
Of course, not all advantages described above need to be achieved at the same time to practice any one product or method of the present disclosure. Additional features and advantages of the disclosure will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by the practice of the disclosure. The objectives and other advantages of the disclosed embodiments may be realized and attained by the structure particularly pointed out in the written description and claims hereof as well as the appended drawings.
Drawings
The accompanying drawings are included to provide a further understanding of the disclosed embodiments and are incorporated in and constitute a part of this specification, illustrate embodiments of the disclosure and together with the example serve to explain the principles of the disclosure and not to limit the disclosure. The shapes and sizes of the various elements in the drawings are not to be considered as true proportions, but are merely intended to illustrate the present disclosure.
FIG. 1 is a schematic structural diagram of an EPD device according to an embodiment of the present disclosure;
FIG. 2 is a flow chart of an EPD device control method according to an embodiment of the present disclosure;
FIG. 3 is a schematic circuit diagram of an EPD device in an exemplary application of the present disclosure;
FIG. 4 is an application example control flow diagram of the present disclosure;
FIG. 5 is a schematic diagram of a power supply voltage during a failed start-up or restart failure of an apparatus according to an embodiment of the disclosure;
fig. 6 is a schematic circuit diagram of another EPD device in an application example of the present disclosure.
Detailed Description
The present disclosure describes embodiments, but the description is illustrative rather than limiting and it will be apparent to those of ordinary skill in the art that many more embodiments and implementations are possible within the scope of the embodiments described in the present disclosure. Although many possible combinations of features are shown in the drawings and discussed in the embodiments, many other combinations of the disclosed features are possible. Any feature or element of any embodiment may be used in combination with or instead of any other feature or element in any other embodiment, unless expressly limited otherwise.
The present disclosure includes and contemplates combinations of features and elements known to those of ordinary skill in the art. The embodiments, features and elements of the present disclosure that have been disclosed may also be combined with any conventional features or elements to form unique inventive aspects as defined by the claims. Any feature or element of any embodiment may also be combined with features or elements from other inventive aspects to form yet another unique inventive aspect, as defined by the claims. Thus, it should be understood that any features shown and/or discussed in this disclosure may be implemented alone or in any suitable combination. Accordingly, the embodiments are not limited except as by the appended claims and their equivalents. Furthermore, various modifications and changes may be made within the scope of the appended claims.
Further, in describing representative embodiments, the specification may have presented the method and/or process as a particular sequence of steps. However, to the extent that the method or process does not rely on the particular order of steps set forth herein, the method or process should not be limited to the particular sequence of steps described. Other orders of steps are possible as will be understood by those of ordinary skill in the art. Therefore, the particular order of the steps set forth in the specification should not be construed as limitations on the claims. Further, the claims directed to the method and/or process should not be limited to the performance of their steps in the order written, and one skilled in the art can readily appreciate that the sequences may be varied and still remain within the spirit and scope of the embodiments of the present disclosure.
Unless defined otherwise, technical or scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this disclosure belongs. The use of "first," "second," and similar terms in this disclosure is not intended to indicate any order, quantity, or importance, but rather is used to distinguish one element from another. In the present disclosure, "a plurality" may mean two or more numbers. The word "comprising" or "comprises", and the like, means that the element or item listed before the word covers the element or item listed after the word and its equivalents, but does not exclude other elements or items.
To maintain the following description of the embodiments of the present disclosure clear and concise, a detailed description of some known functions and components have been omitted from the present disclosure. The drawings of the embodiments of the disclosure only relate to the structures related to the embodiments of the disclosure, and other structures can refer to the common design.
As mentioned above, since the failure of the EPD device in the startup and running stages cannot be eliminated at present, only a means of restarting can be adopted to ensure that the system program can still run normally when the EPD device fails. However, the inventor of the present application finds that, in a device start-up phase, an EPD device is restarted due to a failed start-up of an EPD panel (EPD screen), so that the voltage of the EPD device is unstable, and the EPD device is restarted successfully. In the device operation stage, when the EPD screen causes the EPD device to restart for various reasons, the EPD voltage is in an unstable state, so that the EPD device is frequently restarted, and the restart may also cause data loss in the processor, and finally the EPD device cannot operate or operates unstably.
The inventor of the present application finds that, when an EPD device fails, a power supply itself still works normally, but is not enough to support normal operation of the whole circuit system, so that the power management system cannot solve the problem that the EPD device fails to start up in a start-up stage or the device is frequently restarted in an operation stage, but can actively monitor through a device system program to solve the problem. To this end, an EPD device is provided in an embodiment of the present application, as shown in fig. 1, including: including power module 11, processor 12, switch control circuit 13 and EPD panel 14, wherein:
a power module 11 for supplying power to the processor 12 and for providing a start-up voltage to the EPD panel 14;
the processor 12 is used for detecting a monitoring voltage and sending a first control signal to the switch control circuit when the monitoring voltage is equal to or lower than a preset fault voltage threshold value; the monitoring voltage comprises an output voltage of the power module 11 or an input voltage of the EPD panel 14, and the preset fault voltage threshold is higher than a fault voltage value;
the switch control circuit 13 is used for disconnecting a path between the power module 11 and the EPD panel 14 according to the first control signal sent by the processor 12;
an EPD panel 14 for displaying.
According to the embodiment of the disclosure, the monitoring voltage is detected by the processor, and when the monitoring voltage is found to possibly cause the processor to be incapable of working normally, the switch control circuit is controlled to disconnect the path between the power module and the EPD panel, that is, the power supply of the EPD panel is closed, so that the problem that the starting of the EPD panel at the starting stage fails or the whole EPD device is restarted due to the fault at the running stage is fundamentally avoided, and the running of the EPD device can be more stable.
The preset fault voltage threshold is a reference value for detecting whether the monitoring voltage causes a device fault, and is slightly higher than a voltage value at which a fault is caused (fault voltage value). When the fault voltage is reached, the normal operation of the whole circuit system is not enough, so that the preset fault voltage threshold value is required to be set to be larger than the fault voltage value, and the power supply of the EPD panel is ensured to be cut off when the circuit system can still normally operate. The predetermined fault voltage threshold may be obtained from experimental tests.
After the embodiment of the disclosure is implemented, the number of times of restarting the EPD equipment is reduced, and the starting success rate is high; and data loss caused by restarting in the running process of the equipment can be avoided. By adopting the scheme, the refresh failure of the EPD panel can be actively monitored, and the defect that the program cannot be judged only by manually checking the screen condition in the prior art is overcome. When the scheme of the embodiment is used for monitoring the fault, the power supply is turned off, and then remedial measures for refreshing the EPD panel (refreshing the screen) are taken, so that the screen refreshing success rate can be greatly improved, and meanwhile, the EPD device is prevented from being restarted.
In an exemplary embodiment, the processor 12 may be further configured to report when the monitored voltage is equal to or lower than a preset fault voltage threshold, so as to early warn a possible fault.
In an exemplary embodiment, the processor 12 is further configured to issue a second control signal to the switch control circuit when the monitored voltage is detected to be above a preset fault voltage threshold; the switch control circuit 13 is further configured to conduct a path between the power module 11 and the EPD panel 14 according to a second control signal sent by the processor 12.
In an exemplary embodiment, the processor is a Micro Controller Unit (MCU), and the processor sends a first control signal to the switch control circuit through an output pin EPD _ EN.
In an exemplary embodiment, the switching control circuit includes a first switching device, a first pole of the first switching device is connected to an input/output (IO) pin of the processor 12, a second pole of the first switching device is connected to an output terminal of the power module 11, a third pole of the first switching device is connected to an input terminal of the EPD panel 14, the first pole of the first switching device receives a first control signal or a second control signal transmitted by the processor 12, the second pole and the third pole of the switching device are disconnected according to the first control signal, and the second pole and the third pole of the first switching device are connected and connected according to the second control signal.
Optionally, the first pole of the first switching device is connected to an input-output (IO) pin EPD _ EN (EPD enabled) of the processor 12.
In an exemplary embodiment, the EPD device further includes a voltage stabilization module, the switch control circuit includes a second switching device and a third switching device, a first pole of the second switching device is connected to an input/output pin (e.g., EPD _ EN pin) of the processor 12, a second pole of the second switching device is connected to an output terminal of the voltage stabilization module, a third pole of the second switching device is connected to the EPD panel 14 input terminal, a first pole of the third switching device is connected to the input/output pin of the processor 12, a second pole of the third switching device is connected to the power module 11 output terminal, and a third pole of the third switching device is connected to the input terminal of the voltage stabilization module. The first pole of the second switching device receives the first control signal or the second control signal sent by the processor 12, and turns off the connection between the second pole and the third pole of the second switching device according to the first control signal, and turns on the connection between the second pole and the third pole of the second switching device according to the second control signal. The second switching device is located in a circuit where the EPD panel is located and used for turning on or turning off a path between the voltage stabilizing module and the EPD panel. The first pole of the third switching device receives the first control signal or the second control signal sent by the processor 12, the connection between the second pole and the third pole of the third switching device is turned off according to the first control signal, and the connection between the second pole and the third pole of the third switching device is turned on according to the second control signal. The third switching device is located in a circuit where the voltage stabilizing module is located and used for conducting or turning off a path between the power supply module and the voltage stabilizing module.
In an exemplary embodiment, the second switching device and the third switching device may only turn off one, for example, only turn off the second switching device located between the voltage stabilization module and the EPD panel, because the voltage stabilization module output may also be connected to other functional modules, and turning off the second switching device may only cut off the power supply of the EPD screen, thereby preventing other functional modules from being affected.
In an exemplary embodiment, the switching device may be a transistor including at least three-terminal elements of a gate electrode, a drain electrode, and a source electrode. The transistor has a channel region between a drain electrode (drain electrode terminal, drain region, or drain electrode) and a source electrode (source electrode terminal, source region, or source electrode), and current can flow through the drain electrode, the channel region, and the source electrode. In this specification, the first electrode may be a gate electrode, the second electrode may be a drain electrode, the third electrode may be a source electrode, or the second electrode may be a source electrode, and the third electrode may be a drain electrode. In addition to using transistors as switching devices, in other embodiments, other known circuits may be used as the switch control circuit.
In an exemplary embodiment, the processor starts to detect the monitoring voltage during initialization to ensure that the EPD device is protected during startup. The processor is further configured to, at a start-up stage of the EPD device, send a first control signal to a switch control circuit (the first switch device or the second switch device), disconnect a path between the EPD panel and the power module, and after other functional modules in the EPD device are started up, send a second control signal to the switch control circuit (the first switch device or the second switch device), so as to connect the connection between the EPD panel and the power module. The probability of starting failure can be reduced by starting other functional modules first and then starting the EPD panel.
In an exemplary embodiment, the EPD device may further include one or more functional blocks, the switch control circuit includes one or more fourth switching devices, each fourth switching device corresponds to one or more functional blocks, for example, when a fourth switching device is connected to a functional block, the fourth switching device corresponds to the functional block. The fourth switching device can be connected with a plurality of functional modules, and is equivalent to the fourth switching device corresponding to the plurality of functional modules;
the processor is further used for sending a first control signal to the fourth switching device;
and the fourth switching device is used for disconnecting the passage between the power supply module and the functional module corresponding to the fourth switching device according to the first control signal sent by the processor.
Correspondingly, the processor is further configured to send a second control signal to a fourth switching device, and the fourth switching device is configured to switch on a path between the power module and a functional module corresponding to the fourth switching device according to the second control signal sent by the processor. The power consumption of the EPD device may be reduced by powering off other unnecessary functional modules.
The embodiment of the present disclosure further provides a control method suitable for the EPD device shown in fig. 1, as shown in fig. 2, including the following steps:
step 21, detecting a monitoring voltage, and judging whether the monitoring voltage is equal to or lower than a preset fault voltage threshold value;
the monitoring voltage comprises an output voltage of the power module 11 or an input voltage of the EPD panel 14, and the preset fault voltage threshold is higher than a fault voltage value;
alternatively, the processor may start to perform step 21 when it initializes during the startup phase of the EPD device.
Step 22, in response to the monitored voltage being lower than the preset fault voltage threshold, sending a first control signal to the switch control circuit 13, so that the switch control circuit 13 disconnects the path between the power module 11 and the EPD panel 14.
In an exemplary embodiment, the method further comprises: in response to the monitored voltage being higher than the preset fault voltage threshold, a second control signal is sent to the switch control circuit 13, so that the switch control circuit 13 opens a path between the power module 11 and the EPD panel 14.
In an exemplary embodiment, the detecting the monitoring voltage includes: in the start-up phase, the detection of the monitoring voltage is started during the initialization of the Micro Control Unit (MCU). The monitoring function can be started when the starting is ensured, and the equipment is protected.
In an exemplary embodiment, when the switch control circuit includes a first switching device between the EPD panel and the power module, the processor sends the first control signal or the second control signal to the first switching device. When the EPD device further includes a voltage stabilization module, the switch control circuit includes a second switching device between the EPD panel and the voltage stabilization module and a third switching device between the power supply module and the voltage stabilization module, and at this time, the processor may send only the first control signal or the second control signal to the second switching device. And the control on the EPD panel branch is realized.
In an exemplary embodiment, the method further comprises: in the starting stage of the EPD device, a first control signal is sent to a switch control circuit (the first switch device or the second switch device), the power supply of the EPD panel is disconnected, and after other modules in the EPD device are started, a second control signal is sent to the switch control circuit (the first switch device or the second switch device), so that the connection between the EPD panel and the power supply module is switched on. The probability of a boot failure may be reduced by booting other modules first and then booting the EPD panel last.
The present disclosure is illustrated by the following exemplary embodiments.
For example, fig. 3 is a circuit diagram of an EPD device, in which the lithium manganese battery is the power module 11, the MCU (micro control unit) is the processor 12, and the E-ink is the EPD panel (EPD screen). In the figure, DC-DC is a voltage stabilizing module. In the present example, the switch control circuit 13 may include only the switching device 1, or the switch control circuit 13 may include the switching device 1 and the switching device 2. When the switching control circuit 13 includes the switching device 1 and the switching device 2, when it is detected that the monitored voltage is lower than the preset fault voltage threshold, the first control signal may be sent to the switching device 1 and the switching device 2, respectively, so that both the switching device 1 and the switching device 2 are turned off, or the first control signal may be sent only to the switching device 1 so that the switching device 1 is turned off.
The control flow is shown in fig. 4, and includes the following steps:
step 41, the EPD device is started;
step 42, monitoring the power supply voltage V1;
step 43, judging whether the power supply voltage V1 is smaller than a preset fault voltage threshold value V2, if so, executing step 44, and if not, executing step 45;
fig. 5 is a schematic diagram of the power supply voltage when the device fails to start or restart, and shows the relationship between the fault voltage value V1 and the preset fault voltage threshold value V2. The fault voltage threshold V2 is slightly higher than the fault voltage value V1. The fault voltage threshold V2 may be derived from experimental tests.
Step 44, closing E-Ink, and executing step 46;
MCU passes through IO pin EPD _ EN control switching device 1 initiative disconnection EPD screen's power, can guarantee that the preferential supply MCU work of power, avoids restarting of whole EPD equipment. After the E-Ink is closed, the MCU can report the fault condition, and then the E-Ink is refreshed, so that the starting success rate is improved.
Step 45, starting E-Ink, and executing step 46;
at step 46, the device continues to perform other tasks, and the screen may be refreshed again as needed, returning to step 42.
When the supply voltage V1 stabilizes, an attempt is made to refresh the EPD screen.
In another example, as shown in fig. 6, other functional modules may also be included in the EPD device, for example, one or more of the following functional modules: a word stock chip, a storage module (Flash in fig. 6) and a wireless communication module (SX 1278 in fig. 6). A switching device (the aforementioned fourth switching device) may be provided between each functional module and the power supply module, such as the switching device 3 and the switching device 4 in the figure. The switch control circuit between other functional modules and the processor is added, branch circuit control can be better realized, and the switch device corresponding to the functional module is disconnected when the corresponding functional module is not required to be accessed, so that low power consumption is realized.
It should be noted that the voltage values and the current values shown in fig. 4 and fig. 6 are only examples and are not intended to limit the present application, and in other embodiments, other values may be adopted.
In the example, the switching device is added, so that the device can independently control power supply of different peripherals, and in the example, the power supply of the EPD electronic paper screen is controlled through the IO pin EPD _ EN of the MCU, so that the power supply control of the branch circuit is realized.
In an exemplary embodiment, during the initialization process of the MCU of the device in the startup phase, the real-time monitoring of the power voltage V1 is preferentially turned on, then other peripherals are started, and finally the EPD screen is refreshed. It can be ensured that the monitoring function can be started at the position indicated by the arrow in fig. 5, the device is protected, and finally the refresh of the EPD screen can improve the refresh success rate.
In an exemplary embodiment, whether the EPD display screen normally works can be judged by directly monitoring the current consumed by the EPD display screen (which can be realized by monitoring the input voltage of the EPD display screen), whether the normal work of the CPU is influenced by indirectly judging whether the current is too large, and whether the EPD display screen is normally refreshed can be directly judged in such a way.
Products that the EPD device described herein may use include, but are not limited to: electronic books, electronic price tags, electronic conference table cards, electronic chest cards, and the like that use the EPD display screen.
In an exemplary embodiment, the disclosed embodiments also provide a non-transitory computer readable storage medium having stored thereon a computer program executable on a processor, the computer program implementing the steps of the aforementioned control method when executed by the processor.
It will be understood by those of ordinary skill in the art that all or some of the steps of the methods, systems, functional modules/units in the devices disclosed above may be implemented as software, firmware, hardware, and suitable combinations thereof. In a hardware implementation, the division between the functional modules/units mentioned in the above description is not trivial; for example, one physical component may have multiple functions, or one function or step may be performed by several physical components in cooperation. Some or all of the components may be implemented as software executed by a processor, such as a digital signal processor or microprocessor, or as hardware, or as an integrated circuit, such as an application specific integrated circuit. Such software may be distributed on computer readable media, which may include computer storage media (or non-transitory media) and communication media (or transitory media). The term computer storage media includes volatile and nonvolatile, removable and non-removable media implemented in any method or technology for storage of information such as computer readable instructions, data structures, program modules or other data, as is well known to those of ordinary skill in the art. Computer storage media includes, but is not limited to, RAM, ROM, EEPROM, flash memory or other memory technology, CD-ROM, Digital Versatile Disks (DVD) or other optical disk storage, magnetic cassettes, magnetic tape, magnetic disk storage or other magnetic storage devices, or any other medium which can be used to store the desired information and which can accessed by a computer. In addition, communication media typically embodies computer readable instructions, data structures, program modules or other data in a modulated data signal such as a carrier wave or other transport mechanism and includes any information delivery media as known to those skilled in the art.
Although the embodiments disclosed in the present disclosure are described above, the descriptions are only for the convenience of understanding the present disclosure, and are not intended to limit the present disclosure. It will be understood by those skilled in the art of the present disclosure that various changes in form and details may be made therein without departing from the spirit and scope of the disclosure, and that the scope of the disclosure is to be limited only by the terms of the appended claims.
Claims (10)
1. An electrophoretic display device, comprising: power module, treater, on-off control circuit and electrophoresis display panel, wherein:
the power supply module is used for supplying power to the processor and providing starting voltage for the electrophoresis display panel;
the processor is used for detecting a monitoring voltage and sending a first control signal to the switch control circuit when the monitoring voltage is equal to or lower than a preset fault voltage threshold value; the monitoring voltage comprises an output voltage of a power module or an input voltage of an electrophoretic display panel, and the preset fault voltage threshold is higher than a fault voltage value;
the switch control circuit is used for disconnecting a path between the power supply module and the electrophoretic display panel according to the first control signal sent by the processor;
the electrophoresis display panel is used for displaying.
2. Electrophoretic display device according to claim 1,
the processor is further used for sending a second control signal to the switch control circuit when the monitored voltage is detected to be higher than a preset fault voltage threshold value;
the switch control circuit is further configured to enable a path between the power module and the electrophoretic display panel to be conducted according to a second control signal sent by the processor.
3. Electrophoretic display device according to claim 1,
the processor is further configured to send a first control signal to the switch control circuit first in a start-up stage of the electrophoretic display device, disconnect a path between the electrophoretic display panel and the power supply module, and send a second control signal to the switch control circuit after other modules in the electrophoretic display device are started up, so as to connect the electrophoretic display panel and the power supply module.
4. An electrophoretic display device as claimed in any one of claims 1 to 3,
the switch control circuit comprises a first switch device, a first pole of the first switch device is connected with an input/output pin of the processor, a second pole of the first switch device is connected with the output end of the power supply module, and a third pole of the first switch device is connected with the input end of the electrophoresis display panel.
5. An electrophoretic display device as claimed in any one of claims 1 to 3, further comprising a voltage stabilizing module;
the switch control circuit comprises a second switch device and a third switch device, wherein a first pole of the second switch device is connected with an input/output pin of the processor, a second pole of the second switch device is connected with an output end of the voltage stabilizing module, a third pole of the second switch device is connected with an input end of the electrophoresis display panel, a first pole of the third switch device is connected with an input/output pin of the processor, a second pole of the third switch device is connected with an output end of the power supply module, and a third pole of the third switch device is connected with an input end of the voltage stabilizing module.
6. An electrophoretic display device as claimed in any one of claims 1 to 3, further comprising one or more functional blocks, wherein the switch control circuit comprises one or more fourth switching devices, each fourth switching device corresponding to one or more functional blocks;
the processor is further used for sending a first control signal to the fourth switching device;
and the fourth switching device is used for disconnecting the passage between the power supply module and the functional module corresponding to the fourth switching device according to the first control signal sent by the processor.
7. An electrophoretic display device control method for an electrophoretic display device according to any one of claims 1 to 6, the control method comprising:
detecting a monitoring voltage, and judging whether the monitoring voltage is equal to or lower than a preset fault voltage threshold value; the monitoring voltage comprises an output voltage of a power module or an input voltage of an electrophoretic display panel, and the preset fault voltage threshold is higher than a fault voltage value;
and responding to the monitoring voltage lower than a preset fault voltage threshold value, and sending a first control signal to a switch control circuit to enable the switch control circuit to break a path between the power supply module and the electrophoresis display panel.
8. The electrophoretic display device control method according to claim 7, wherein the method further comprises:
and responding to the monitoring voltage higher than a preset fault voltage threshold value, and sending a second control signal to the switch control circuit to enable the switch control circuit to open a path between the power supply module and the electrophoresis display panel.
9. An electrophoretic display device control method as claimed in claim 7,
the method further comprises the following steps: and in the starting stage of the electrophoretic display device, a first control signal is sent to a switch control circuit firstly, a passage between the electrophoretic display panel and the power supply module is disconnected, and after other modules in the electrophoretic display device are started, a second control signal is sent to the switch control circuit to connect the electrophoretic display panel and the power supply module.
10. A computer-readable storage medium, on which a computer program is stored which is executable on a processor, the computer program, when being executed by the processor, realizing the steps of the electrophoretic display device control method as claimed in any one of claims 7 to 9.
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