CN111679789A

CN111679789A - Write-in control method and display device

Info

Publication number: CN111679789A
Application number: CN202010444279.8A
Authority: CN
Inventors: 臧晓华; 张继栋
Original assignee: Qingdao Hisense Media Network Technology Co Ltd
Current assignee: Vidaa Netherlands International Holdings BV
Priority date: 2020-05-22
Filing date: 2020-05-22
Publication date: 2020-09-18
Anticipated expiration: 2040-05-22
Also published as: CN111679789B

Abstract

The application discloses a write-in control method and display equipment, which are used for controlling the data write-in amount of an application program to an EMMC. The method comprises the following steps: counting the data write-in amount of each application program to the EMMC in the current period; calculating the data writing amount of each application program in unit time according to the data writing amount of each application program to the EMMC; determining the total write-in quantity in the unit time corresponding to the current period according to the data write-in quantity of each application program in the unit time; and if the total write-in quantity in the unit time is larger than the write-in index, determining the application program with the maximum data write-in quantity in the unit time from the application programs, and limiting the determined application program to perform write-in operation on the EMMC.

Description

Write-in control method and display device

Technical Field

The present application relates to the field of storage technologies, and in particular, to a write control method and a display device.

Background

An Embedded Multimedia Memory Card (EMMC) is an Embedded memory mainly for smart devices, and generally includes three components: the Multi Media Card (MMC) interface, flash memory and flash memory controller generally regard the maximum erasing and writing times of the flash memory as the life-span of the EMMC, and the flash memory erasing and writing times reach the maximum erasing and writing times, then the EMMC life-span ends.

For a device using an EMMC as a storage medium, an application installed on the device may write more or less data into the EMMC when running. Excessive writes due to application normality or failure can result in the EMMC being consumed too quickly.

Disclosure of Invention

The embodiment of the application provides a write-in control method and display equipment, which are used for adjusting the write-in permission of an application program to an EMMC according to the data write-in quantity of the application program to the EMMC.

In a first aspect, there is provided a display device comprising:

a display;

a controller, comprising:

the EMMC monitoring module is used for counting the data write quantity of each application program to the EMMC in the current period;

the EMMC management module is used for acquiring the data write-in quantity of each application program to the EMMC in the current period from the EMMC monitoring module and calculating the data write-in quantity of each application program in unit time according to the acquired data write-in quantity of each application program to the EMMC; determining the total write-in quantity in the unit time corresponding to the current period according to the data write-in quantity of each application program in the unit time;

and if the total write-in quantity in the unit time is larger than the write-in index, determining the application program with the maximum data write-in quantity in the unit time from the application programs, and limiting the determined application program to perform write-in operation on the EMMC.

In a second aspect, a write control method is provided, including:

counting the data write-in amount of each application program to the EMMC in the current period;

calculating the data writing amount of each application program in unit time according to the data writing amount of each application program to the EMMC; determining the total write-in quantity in unit time corresponding to the current period according to the data write-in quantity of each application program in unit time;

In the above embodiment, the display device calculates the total write-in amount of each application program to the EMMC in a unit time according to the data write-in amount of each currently running application program to the EMMC in the current period, and limits the application program with the largest write-in data amount in the unit time in each application program to write in the EMMC when the total write-in amount is greater than the write-in index, so that excessive write-in of the application program to the EMMC can be effectively avoided, and the life loss of the EMMC is reduced.

Drawings

Fig. 1A is a schematic diagram illustrating an operation scenario between the display device 200 and the control apparatus 100;

fig. 1B is a block diagram schematically illustrating a configuration of the control apparatus 100 in fig. 1A;

fig. 1C is a block diagram schematically illustrating a configuration of the display device 200 in fig. 1A;

FIG. 1D is a block diagram illustrating an architectural configuration of an operating system in memory of display device 200;

fig. 2 is a flowchart illustrating a write control method provided by an embodiment of the present application;

FIGS. 3A-3B are diagrams illustrating alert information displayed on a display;

fig. 4A-4B illustrate schematic diagrams of newly added modules in a display device.

Detailed Description

To make the objects, technical solutions and advantages of the exemplary embodiments of the present application clearer, the technical solutions in the exemplary embodiments of the present application will be clearly and completely described below with reference to the drawings in the exemplary embodiments of the present application, and it is obvious that the described exemplary embodiments are only a part of the embodiments of the present application, but not all the embodiments.

All other embodiments, which can be derived by a person skilled in the art from the exemplary embodiments shown in the present application without inventive effort, shall fall within the scope of protection of the present application. Moreover, while the disclosure herein has been presented in terms of exemplary embodiment or embodiments, it is to be understood that each aspect of the disclosure can be implemented as a separate entity, or steps.

The terms "comprises" and "comprising," as well as any variations thereof, used in this application are intended to cover a non-exclusive inclusion, such that a product or device that comprises a list of elements is not necessarily limited to those elements explicitly listed, but may include other elements not expressly listed or inherent to such product or device.

The term "module," as used herein, refers to any known or later developed hardware, software, firmware, artificial intelligence, fuzzy logic, or combination of hardware and/or software code that is capable of performing the functionality associated with that element.

The term "gesture" as used herein refers to a user's behavior through a change in hand shape or movement of the hand, etc., to convey an intended idea, action, purpose, or result.

In one example, the write control method provided herein is applied to a device, such as a mobile terminal, a display device, or the like, that uses an EMMC as a storage medium. To facilitate understanding of the application of the method provided in the present application to a display device, the following description is made of the structure of the display device:

fig. 1A is a schematic diagram illustrating an operation scenario between the display device 200 and the control apparatus 100. As shown in fig. 1A, the control apparatus 100 and the display device 200 may communicate with each other in a wired or wireless manner.

Among them, the control apparatus 100 is configured to control the display device 200, which may receive an operation instruction input by a user and convert the operation instruction into an instruction recognizable and responsive by the display device 200, serving as an intermediary for interaction between the user and the display device 200. Such as: the user operates the channel up/down key on the control device 100, and the display device 200 responds to the channel up/down operation.

The control device 100 may be a remote controller 100A, which includes infrared protocol communication or bluetooth protocol communication, and other short-distance communication methods, etc. to control the display apparatus 200 in a wireless or other wired manner. The user may input a user instruction through a key on a remote controller, voice input, control panel input, etc. to control the display apparatus 200. Such as: the user can input a corresponding control command through a volume up/down key, a channel control key, up/down/left/right moving keys, a voice input key, a menu key, a power on/off key, etc. on the remote controller, to implement the function of controlling the display device 200.

The control device 100 may also be an intelligent device, such as a mobile terminal 100B, a tablet computer, a notebook computer, and the like. For example, the display device 200 is controlled using an application program running on the smart device. The application program may provide various controls to a user through an intuitive User Interface (UI) on a screen associated with the smart device through configuration.

For example, the mobile terminal 100B may install a software application with the display device 200 to implement connection communication through a network communication protocol for the purpose of one-to-one control operation and data communication. Such as: the mobile terminal 100B may be caused to establish a control instruction protocol with the display device 200 to implement the function of physical keys as arranged in the remote control 100A by operating various function keys or virtual buttons of a user interface provided on the mobile terminal 100B. The audio and video content displayed on the mobile terminal 100B may also be transmitted to the display device 200, so as to implement a synchronous display function.

The display apparatus 200 may be implemented as a television, and may provide an intelligent network television function of a broadcast receiving television function as well as a computer support function. Examples of the display device include a digital television, a web television, a smart television, an Internet Protocol Television (IPTV), and the like.

The display device 200 may be a liquid crystal display, an organic light emitting display, a projection display device. The specific display device type, size, resolution, etc. are not limited.

The display apparatus 200 also performs data communication with the server 300 through various communication means. Here, the display apparatus 200 may be allowed to make a communication connection through a Local Area Network (LAN), a Wireless Local Area Network (WLAN), and other networks. The server 300 may provide various contents and interactions to the display apparatus 200. For example, the display device 200 may send and receive information such as: receiving Electronic Program Guide (EPG) data, receiving software program updates, or accessing a remotely stored digital media library. The servers 300 may be a group or groups of servers, and may be one or more types of servers. Other web service contents such as a video on demand and an advertisement service are provided through the server 300.

Fig. 1B is a block diagram illustrating the configuration of the control device 100. As shown in fig. 1B, the control device 100 includes a controller 110, a memory 120, a communicator 130, a user input interface 140, an output interface 150, and a power supply 160.

The controller 110 includes a Random Access Memory (RAM)111, a Read Only Memory (ROM)112, a processor 113, a communication interface, and a communication bus. The controller 110 is used to control the operation and operation of the control device 100, as well as the communication cooperation between internal components, external and internal data processing functions.

Illustratively, when an interaction of a user pressing a key disposed on the remote controller 100A or an interaction of touching a touch panel disposed on the remote controller 100A is detected, the controller 110 may control to generate a signal corresponding to the detected interaction and transmit the signal to the display device 200.

And a memory 120 for storing various operation programs, data and applications for driving and controlling the control apparatus 100 under the control of the controller 110. The memory 120 may store various control signal commands input by a user.

The communicator 130 enables communication of control signals and data signals with the display apparatus 200 under the control of the controller 110. Such as: the control apparatus 100 transmits a control signal (e.g., a touch signal or a button signal) to the display device 200 via the communicator 130, and the control apparatus 100 may receive the signal transmitted by the display device 200 via the communicator 130. The communicator 130 may include an infrared signal interface 131 and a radio frequency signal interface 132. For example: when the infrared signal interface is used, the user input instruction needs to be converted into an infrared control signal according to an infrared control protocol, and the infrared control signal is sent to the display device 200 through the infrared sending module. The following steps are repeated: when the rf signal interface is used, a user input command needs to be converted into a digital signal, and then the digital signal is modulated according to the rf control signal modulation protocol and then transmitted to the display device 200 through the rf transmitting terminal.

The user input interface 140 may include at least one of a microphone 141, a touch pad 142, a sensor 143, a key 144, and the like, so that a user can input a user instruction regarding controlling the display apparatus 200 to the control apparatus 100 through voice, touch, gesture, press, and the like.

The output interface 150 outputs a user instruction received by the user input interface 140 to the display apparatus 200, or outputs an image or voice signal received by the display apparatus 200. Here, the output interface 150 may include an LED interface 151, a vibration interface 152 generating vibration, a sound output interface 153 outputting sound, a display 154 outputting an image, and the like. For example, the remote controller 100A may receive an output signal such as audio, video, or data from the output interface 150, and display the output signal in the form of an image on the display 154, in the form of audio on the sound output interface 153, or in the form of vibration on the vibration interface 152.

And a power supply 160 for providing operation power support for each component of the control device 100 under the control of the controller 110. In the form of a battery and associated control circuitry.

A hardware configuration block diagram of the display device 200 is exemplarily illustrated in fig. 1C. As shown in fig. 1C, the display apparatus 200 may further include a tuner demodulator 210, a communicator 220, a detector 230, an external device interface 240, a controller 250, a memory 260, a user interface 265, a video processor 270, a display 275, an audio processor 280, an audio input interface 285, and a power supply 290.

The tuner demodulator 210 receives the broadcast television signal in a wired or wireless manner, and may perform modulation and demodulation processing such as amplification, mixing, resonance, and the like, so as to demodulate, from a plurality of wireless or wired broadcast television signals, an audio/video signal carried in a frequency of a television channel selected by a user, and additional information (e.g., EPG data).

The tuner demodulator 210 is responsive to the user selected frequency of the television channel and the television signal carried by the frequency, as selected by the user and controlled by the controller 250.

The tuner demodulator 210 can receive a television signal in various ways according to the broadcasting system of the television signal, such as: terrestrial broadcasting, cable broadcasting, satellite broadcasting, internet broadcasting, or the like; and according to different modulation types, a digital modulation mode or an analog modulation mode can be adopted; and the analog signal and the digital signal can be demodulated according to the type of the received television signal.

In other exemplary embodiments, the tuning demodulator 210 may also be in an external device, such as an external set-top box. In this way, the set-top box outputs a television signal after modulation and demodulation, and inputs the television signal into the display apparatus 200 through the external device interface 240.

The communicator 220 is a component for communicating with an external device or an external server according to various communication protocol types. For example, the display apparatus 200 may transmit content data to an external apparatus connected via the communicator 220, or browse and download content data from an external apparatus connected via the communicator 220. The communicator 220 may include a network communication protocol module or a near field communication protocol module, such as a WIFI module 221, a bluetooth communication protocol module 222, and a wired ethernet communication protocol module 223, so that the communicator 220 may receive a control signal of the control device 100 according to the control of the controller 250 and implement the control signal as a WIFI signal, a bluetooth signal, a radio frequency signal, and the like.

The detector 230 is a component of the display apparatus 200 for collecting signals of an external environment or interaction with the outside. The detector 230 may include an image collector 231, such as a camera, a video camera, etc., which may be used to collect external environment scenes to adaptively change the display parameters of the display device 200; and the function of acquiring the attribute of the user or interacting gestures with the user so as to realize the interaction between the display equipment and the user. A light receiver 232 may also be included to collect ambient light intensity, to adapt to changes in display parameters of the display device 200, and so on.

In some other exemplary embodiments, the detector 230 may further include a temperature sensor, such as by sensing an ambient temperature, and the display device 200 may adaptively adjust a display color temperature of the image. For example, when the temperature is higher, the display device 200 may be adjusted to display a cool color tone; when the temperature is low, the display device 200 can be adjusted to display the warm tone of the image.

In some other exemplary embodiments, the detector 230, which may further include a sound collector, such as a microphone, may be configured to receive a sound of a user, such as a voice signal of a control instruction of the user to control the display device 200; alternatively, ambient sounds may be collected that identify the type of ambient scene, enabling the display device 200 to adapt to ambient noise.

The external device interface 240 is a component for providing the controller 210 to control data transmission between the display apparatus 200 and an external apparatus. The external device interface 240 may be connected to an external apparatus such as a set-top box, a game device, a notebook computer, etc. in a wired/wireless manner, and may receive data such as a video signal (e.g., moving picture), an audio signal (e.g., music), additional information (e.g., EPG), etc. of the external apparatus.

The external device interface 240 may include: a High Definition Multimedia Interface (HDMI) terminal 241, a Composite Video Blanking Sync (CVBS) terminal 242, an analog or digital Component terminal 243, a Universal Serial Bus (USB) terminal 244, a Component terminal (not shown), a red, green, blue (RGB) terminal (not shown), and the like.

The controller 250 controls the operation of the display device 200 and responds to the operation of the user by running various software control programs (such as an operating system and various application programs) stored on the memory 260.

As shown in FIG. 1C, controller 250 includes Random Access Memory (RAM)251, Read Only Memory (ROM)252, graphics processor 253, CPU processor 254, communication interface 255, and communication bus 256. The RAM251, the ROM252, the graphic processor 253, and the CPU processor 254 are connected to each other through a communication bus 256 through a communication interface 255.

The ROM252 stores various system boot instructions. If the power of the display apparatus 200 starts to be started upon receiving the power-on signal, the CPU processor 254 executes a system start instruction in the ROM252, and copies the operating system stored in the memory 260 to the RAM251 to start running the start operating system. After the start of the operating system is completed, the CPU processor 254 copies the various application programs in the memory 260 to the RAM251 and then starts running and starting the various application programs.

A graphic processor 253 for generating screen images of various graphic objects such as icons, images, and operation menus. The graphic processor 253 may include an operator for performing an operation by receiving various interaction instructions input by a user, and further displaying various objects according to display attributes; and a renderer for generating various objects based on the operator and displaying the rendered result on the display 275.

A CPU processor 254 for executing operating system and application program instructions stored in memory 260. And according to the received user input instruction, processing of various application programs, data and contents is executed so as to finally display and play various audio-video contents.

In some example embodiments, the CPU processor 254 may comprise a plurality of processors. The plurality of processors may include one main processor and a plurality of or one sub-processor. A main processor for performing some initialization operations of the display apparatus 200 in the display apparatus preloading mode and/or operations of displaying a screen in the normal mode. A plurality of or one sub-processor for performing an operation in a standby mode or the like of the display apparatus.

The communication interface 255 may include a first interface to an nth interface. These interfaces may be network interfaces that are connected to external devices via a network.

The controller 250 may control the overall operation of the display apparatus 200. For example: in response to receiving a user input command for selecting a GUI object displayed on the display 275, the controller 250 may perform an operation related to the object selected by the user input command.

Where the object may be any one of the selectable objects, such as a hyperlink or an icon. The operation related to the selected object is, for example, an operation of displaying a link to a hyperlink page, document, image, or the like, or an operation of executing a program corresponding to an icon. The user input command for selecting the GUI object may be a command input through various input means (e.g., a mouse, a keyboard, a touch panel, etc.) connected to the display apparatus 200 or a voice command corresponding to a user uttering a voice.

A memory 260 for storing various types of data, software programs, or applications for driving and controlling the operation of the display device 200. The memory 260 may include volatile and/or nonvolatile memory. And the term "memory" includes the memory 260, the RAM251 and the ROM252 of the controller 250, or a memory card in the display device 200.

In some embodiments, the memory 260 is specifically used for storing an operating program for driving the controller 250 of the display device 200; storing various application programs built in the display apparatus 200 and downloaded by a user from an external apparatus; data such as visual effect images for configuring various GUIs provided by the display 275, various objects related to the GUIs, and selectors for selecting GUI objects are stored.

In some embodiments, the memory 260 is specifically configured to store drivers and related data for the tuner demodulator 210, the communicator 220, the detector 230, the external device interface 240, the video processor 270, the display 275, the audio processor 280, and the like, external data (e.g., audio-visual data) received from the external device interface, or user data (e.g., key information, voice information, touch information, and the like) received from the user interface.

In some embodiments, memory 260 specifically stores software and/or programs representing an Operating System (OS), which may include, for example: a kernel, middleware, an Application Programming Interface (API), and/or an application program. Illustratively, the kernel may control or manage system resources, as well as functions implemented by other programs (e.g., the middleware, APIs, or applications); at the same time, the kernel may provide an interface to allow middleware, APIs, or applications to access the controller to enable control or management of system resources.

A block diagram of the architectural configuration of the operating system in the memory of the display device 200 is illustrated in fig. 1D. The operating system architecture comprises an application layer, a middleware layer and a kernel layer from top to bottom.

The application layer, the application programs built in the system and the non-system-level application programs belong to the application layer and are responsible for direct interaction with users. The application layer may include a plurality of applications such as a NETFLIX application, a setup application, a media center application, and the like. These applications may be implemented as Web applications that execute based on a WebKit engine, and in particular may be developed and executed based on HTML, Cascading Style Sheets (CSS), and JavaScript.

Here, HTML, which is called HyperText Markup Language (HyperText Markup Language), is a standard Markup Language for creating web pages, and describes the web pages by Markup tags, where the HTML tags are used to describe characters, graphics, animation, sound, tables, links, etc., and a browser reads an HTML document, interprets the content of the tags in the document, and displays the content in the form of web pages.

CSS, known as Cascading Style Sheets (Cascading Style Sheets), is a computer language used to represent the Style of HTML documents, and may be used to define Style structures, such as fonts, colors, locations, etc. The CSS style can be directly stored in the HTML webpage or a separate style file, so that the style in the webpage can be controlled.

JavaScript, a language applied to Web page programming, can be inserted into an HTML page and interpreted and executed by a browser. The interaction logic of the Web application is realized by JavaScript. The JavaScript can package a JavaScript extension interface through a browser, realize the communication with the kernel layer,

the middleware layer may provide some standardized interfaces to support the operation of various environments and systems. For example, the middleware layer may be implemented as multimedia and hypermedia information coding experts group (MHEG) middleware related to data broadcasting, DLNA middleware which is middleware related to communication with an external device, middleware which provides a browser environment in which each application program in the display device operates, and the like.

The kernel layer provides core system services, such as: file management, memory management, process management, network management, system security authority management and the like. The kernel layer may be implemented as a kernel based on various operating systems, for example, a kernel based on the Linux operating system.

The kernel layer also provides communication between system software and hardware, and provides device driver services for various hardware, such as: provide display driver for the display, provide camera driver for the camera, provide button driver for the remote controller, provide wiFi driver for the WIFI module, provide audio driver for audio output interface, provide power management drive for Power Management (PM) module etc..

A user interface 265 receives various user interactions. Specifically, it is used to transmit an input signal of a user to the controller 250 or transmit an output signal from the controller 250 to the user. For example, the remote controller 100A may transmit an input signal, such as a power switch signal, a channel selection signal, a volume adjustment signal, etc., input by the user to the user interface 265, and then the input signal is transferred to the controller 250 through the user interface 265; alternatively, the remote controller 100A may receive an output signal such as audio, video, or data output from the user interface 265 via the controller 250, and display the received output signal or output the received output signal in audio or vibration form.

In some embodiments, a user may input a user command on a Graphical User Interface (GUI) displayed on the display 275, and the user interface 265 receives the user input command through the GUI. Specifically, the user interface 265 may receive user input commands for controlling the position of a selector in a GUI to select different objects or items.

Alternatively, the user may input a user command by inputting a specific sound or gesture, and the user interface 265 receives the user input command by recognizing the sound or gesture through the sensor.

The video processor 270 is configured to receive an external video signal, and perform video data processing such as decompression, decoding, scaling, noise reduction, frame rate conversion, resolution conversion, and image synthesis according to a standard codec protocol of the input signal, so as to obtain a video signal that is directly displayed or played on the display 275.

Illustratively, the video processor 270 includes a demultiplexing module, a video decoding module, an image synthesis module, a frame rate conversion module, a display formatting module, and the like.

The demultiplexing module is configured to demultiplex an input audio/video data stream, where, for example, an input MPEG-2 stream (based on a compression standard of a digital storage media moving image and voice), the demultiplexing module demultiplexes the input audio/video data stream into a video signal and an audio signal.

And the video decoding module is used for processing the video signal after demultiplexing, including decoding, scaling and the like.

And the image synthesis module is used for carrying out superposition mixing processing on the GUI signal input by the user or generated by the user and the video image after the zooming processing by the graphic generator so as to generate an image signal for display.

The frame rate conversion module is configured to convert a frame rate of an input video, for example, convert a frame rate of an input 60Hz video into a frame rate of 120Hz or 240Hz, where a common format is implemented by using, for example, an interpolation frame method.

And a display formatting module for converting the signal output by the frame rate conversion module into a signal conforming to a display format of a display, such as converting the format of the signal output by the frame rate conversion module to output an RGB data signal.

And a display 275 for receiving the image signal from the output of the video processor 270 and displaying video, image and menu manipulation interfaces. For example, the display may display video from a broadcast signal received by the tuner demodulator 210, may display video input from the communicator 220 or the external device interface 240, and may display an image stored in the memory 260. The display 275, while displaying a user manipulation interface UI generated in the display apparatus 200 and used to control the display apparatus 200.

And, the display 275 may include a display screen assembly for presenting a picture and a driving assembly for driving the display of an image. Alternatively, a projection device and projection screen may be included, provided display 275 is a projection display.

The audio processor 280 is configured to receive an external audio signal, decompress and decode the received audio signal according to a standard codec protocol of the input signal, and perform audio data processing such as noise reduction, digital-to-analog conversion, and amplification processing to obtain an audio signal that can be played by the speaker 286.

Illustratively, audio processor 280 may support various audio formats. Such as MPEG-2, MPEG-4, Advanced Audio Coding (AAC), high efficiency AAC (HE-AAC), and the like.

Audio output interface 285 receives audio signals from the output of audio processor 280. For example, the audio output interface may output audio in a broadcast signal received via the tuner demodulator 210, may output audio input via the communicator 220 or the external device interface 240, and may output audio stored in the memory 260. The audio output interface 285 may include a speaker 286, or an external sound output terminal 287, such as an earphone output terminal, which is output to a generating device of an external device.

In other exemplary embodiments, video processor 270 may include one or more chip components. Audio processor 280 may also comprise one or more chips.

And, in other exemplary embodiments, the video processor 270 and the audio processor 280 may be separate chips or may be integrated with the controller 250 in one or more chips.

And a power supply 290 for supplying power supply support to the display apparatus 200 from the power input from the external power source under the control of the controller 250. The power supply 290 may be a built-in power supply circuit installed inside the display apparatus 200 or may be a power supply installed outside the display apparatus 200.

An EMMC is an embedded memory, and in one example, an EMMC includes three components: MMC interface, flash memory and flash memory controller. The flash memory is a non-volatile memory and is used for storing data in the EMMC, and specifically, the flash memory in the EMMC may be a flash memory array. In one embodiment, the maximum erasing and writing frequency of the flash memory in the EMMC is used as the life of the EMMC, when the erasing and writing frequency of the flash memory reaches the maximum erasing and writing frequency, the life of the EMMC is ended, and the EMMC with the end of the life has a large failure risk and cannot ensure the reliability of data. In counting the erasing times of the flash memory, in one embodiment, all the memory blocks of the flash memory are erased once and counted as an erasing operation for the whole flash memory.

During operation, various applications on a device on which the EMMC is located often write data into the EMMC, where the written data may include: caching files generated during application operation, downloading data such as video in response to user input, and the like. In one example, during the running of each application on the device, there may be a large amount of data written by some applications to the EMMC, which quickly wears out the life of the EMMC, resulting in premature end of the EMMC life.

To facilitate an understanding of what EMMC premature end of life, a simple example is given below: assuming that the expected lifetime of an EMMC is 5 years, if there is a large amount of data written into the EMMC by a part of application programs in the device in which the EMMC is located for a long time, the lifetime of the EMMC may end after 3 years of actual use, that is, the actual lifetime of the EMMC cannot reach the expected lifetime, which is the situation that the lifetime of the EMMC ends too early.

The reasons that an application writes a large amount of data into an EMMC that results in premature end of life of the EMMC may include: when an application program normally runs, a large amount of data needs to be written into the EMMC, for example, when a video application plays a video, a large amount of video data is cached to the EMMC; application failures result in a large amount of data being written to the EMMC, and so on.

In view of the above situation, the present application provides a write control method, which can effectively reduce the wear of the lifetime of the EMMC by limiting the application program to perform write operation on the EMMC. To make the objects, technical solutions and advantages of the present application more apparent, the present application will be described in detail with reference to the accompanying drawings and specific embodiments.

Fig. 2 is a flowchart illustrating a write control method provided by an embodiment of the present application, and in one example, the method may be applied to the display device shown in fig. 1C. In one embodiment, to implement the write control method provided in this application, an EMMC monitoring module and an EMMC management module are added to the controller 250 of the display device shown in fig. 1C. With reference to fig. 1C and 2, the method may include the following steps S41 to S43:

in step S41, the EMMC monitoring module counts the data write amount of each application program to the EMMC in the current period.

In step S41, the data write amount of the application to the EMMC refers to the data amount of the application to write to the EMMC, and the unit thereof may be B, KB, M (MB), g (gb), t (tb), or the like.

In one example, in step S41, the EMMC monitoring module starts to count the data writing amount of each application program to the EMMC in the current period after the display device is started.

When the EMMC monitoring module obtains the data write amount of the application program to the EMMC, in an example, the EMMC driver in the display device counts the write amount of each application program to the EMMC, and the EMMC monitoring module may read the currently counted write amount of each application program to the EMMC from the EMMC driver as the data write amount of each application program to the EMMC in the current period. For the display device shown in FIG. 1C, the EMMC driver may be stored in the memory 260 of the display device. In one embodiment, the EMMC driver may count the data writing amount of the application program to the EMMC according to a preset period T2, taking T2 as 500s as an example, the EMMC driver counts the data writing amount of the application program to the EMMC in real time every 500s, and after completing counting for one 500s, counts the data writing amount of the application program to the EMMC from 0 in the next 500 s.

In one embodiment, the period in step S41 is denoted as T1, and when the EMMC monitoring module reads the write amount of the application program counted in the EMMC driver to the EMMC, according to the relationship between T1 and T2, a plurality of reading manners may be performed, two of which are exemplarily shown below:

the first method is as follows: t1 ═ T2

In the first mode, as an embodiment, when the EMMC monitoring module counts the data write amount of each application program to the EMMC in T1, the EMMC monitoring module may read the data write amount of each application program currently counted by the EMMC driver to the EMMC in T1 in real time, and directly use the data write amount as the data write amount of each current application program to the EMMC. And when the T1 is finished, the data write-in amount of each current application program in the EMMC monitoring module to the EMMC is the data write-in amount of each application program in the current period to the EMMC.

The second method comprises the following steps: t1 ═ nT2(n is an integer, and n is greater than 0)

In the second mode, as an embodiment, when the EMMC monitoring module counts the data write amount of each application program to the EMMC in T1, the EMMC monitoring module may read the data write amount of each application program to the EMMC currently counted by the EMMC driver in n T2 in real time, accumulate the data write amounts of each application program to the EMMC obtained in n T2, and use the accumulated result as the data write amount of each application program to the EMMC currently. And when the nT2 is finished, the data write-in amount of each current application program to the EMMC in the EMMC monitoring module is the data write-in amount of each application program to the EMMC in the current period.

The third method comprises the following steps: t2 ═ nT1(n is an integer, and n is greater than 0)

In the third mode, as an embodiment, when the EMMC monitoring module counts the data write amount of each application program to the EMMC in T1, the EMMC monitoring module may read the data write amount of each application program to the EMMC currently counted by the EMMC driver twice at a time interval of T1, calculate a difference value between the data write amounts of the application programs read twice to the EMMC, and use the difference value as the data write amount of each application program to the EMMC in the current period.

In practical applications, besides the above reading method, there are many other reading methods, which are not described one by one here. As an embodiment, when the EMMC driver ends the statistics of the period T2 and enters the statistics of the next period T2, the statistics in the period T2 may be deleted to reduce unnecessary resource occupation.

In one example, the sizes of T1 and T2 may be set for different display device implementations, and in particular, the sizes of T1 and T2 may be set according to a variety of factors. For one embodiment, the plurality of factors may include the number of applications installed in the display device, the number of applications currently running, and the like. For example, the size of T1 may be set according to the number of applications installed in the display device, and specifically includes: if the number of applications installed in the display device is small, T1 is set to a large value; if the number of applications installed in the display device is large, T1 is set to a small value. In one embodiment, the relationship of T1 and T2 may also be adjusted as the above factors change.

In step S42, the EMMC management module obtains the data write-in amount of each application program to the EMMC in the current period from the EMMC monitoring module, and calculates the data write-in amount of each application program to the EMMC in unit time and the total write-in amount of each application program to the EMMC in unit time according to the data write-in amount.

In step S42, the total write amount to the EMMC per unit time can be calculated by: and calculating the sum of the data writing amount of each application program to the EMMC in the current period, calculating the ratio of the sum of the data writing amount to the time of the current period, and taking the ratio as the total writing amount of each application program to the EMMC in unit time. Since the application programs often write data to the EMMC in a non-uniform and continuous manner, the total write amount of each application program to the EMMC in a unit time calculated in this embodiment is actually an average value of the total write amounts of each application program to the EMMC in a unit time.

To facilitate understanding of the present embodiment, a simple example is as follows: taking the current cycle as 100s as an example, it is assumed that the data write amounts of the respective applications (denoted as application 1, application 2, and application 3, respectively) to the EMMC within 100s are: 100M, 10M and 1M, the sum of the data writing amount of each application program to the EMMC in 100s can be calculated to be 111M, and the ratio of the sum of the data writing amount to the time size 100 of the current period is calculated, so that the total writing amount of each application program to the EMMC in unit time (1s) is 1.11M.

In another embodiment, the total write amount to the EMMC per unit time in step S42 may be further calculated by: calculating the data write-in amount of each currently running application program to the EMMC in unit time, specifically, calculating the ratio of the data write-in amount of each application program to the EMMC in the current period to the time of the current period, and taking the ratio as the data write-in amount of the application program to the EMMC in unit time; the sum of the data write amounts of the applications to the EMMC in the unit time is calculated as the total write amount of the applications to the EMMC in the unit time.

To facilitate understanding of the present embodiment, a simple example is as follows: taking the current cycle as 100s as an example, it is assumed that the data write amounts of the respective applications (denoted as application 1, application 2, and application 3, respectively) to the EMMC within 100s are: 100M, 10M, and 1M, the data writing amount of each application program to the EMMC in unit time (1s) can be calculated as: 1M, 0.1M and 0.01M, and thus the sum of the write amounts of each application program to the EMMC in the unit time (1s) is calculated to be 1.11M, and 1.11M is the total write amount of each application program to the EMMC in the unit time (1 s).

In step S43, if the total write amount is greater than the write index, the target application program with the largest data write amount to the EMMC in the unit time in each application program is determined, and the target application program is restricted from performing the write operation on the EMMC.

The total write amount here is the total write amount to the EMMC per unit time of each application program calculated in step S42. This step S43 is performed by the EMMC management module.

And after the total write-in amount of the currently running application program to the EMMC in unit time is obtained through calculation, the total write-in amount is compared with the write-in index. The write index here indicates, in one example, the maximum value of the total write amount to the EMMC by each application per unit time, and if the actual total write amount to the EMMC by each application is larger than the write index, it is considered that the data write amount to the EMMC by each application is too large, and the life of the EMMC is lost quickly. In one embodiment, the size of the write indicator may be calculated according to the maximum number of erasures and the capacity of the flash memory in the EMMC. Specifically, the product of the maximum flash memory erasing times and the flash memory capacity of the EMMC can be used as the maximum write-in amount of the EMMC, and the ratio of the maximum write-in amount to the expected use time of the EMMC is calculated, and the ratio is the write-in index of the application program to the EMMC in unit time. The maximum erasing times and the flash capacity of the flash memory are determined by the hardware of the flash memory, and the expected service life of the EMMC can be set manually.

The maximum erasing and writing times of the flash memory of the EMMC are 3000 times, the capacity of the flash memory is 4G, and the preset service life of the EMMC is 6 × 10⁷s is taken as an example, the product of the flash memory maximum erasing and writing times and the flash memory capacity of the EMMC is calculated to be 12000G, and the 12000G is the maximum writing amount of the EMMC; and then calculating the ratio of the maximum write-in quantity to the expected use time length to obtain the write-in quantity per second of 0.0002G, wherein 0.0002G is the write-in index of the application program to the EMMC per second. Furthermore, the obtained result may be converted into 0.2048M per second according to the conversion formula 1G-1024M, and 0.2048M is the write index of the application program to the EMMC per second.

When the total write amount of each application program to the EMMC in a unit time is greater than the write index, which causes the life of the EMMC to be excessively quickly lost, in order to cope with this situation, the application program with the largest data write amount to the EMMC in the unit time in the currently running application program may be determined as the target application program, so as to control the write permission of the target application program to the EMMC.

When determining the target application program, as an embodiment, the currently running application programs may be sorted according to the data write quantity of the EMMC in a unit time, and if the currently running application programs are sorted in the order from small to large, the application program arranged at the last position is selected as the target application program; and if the data are sequenced in the sequence of the data writing quantity from large to small, selecting the application programs arranged at the head and the tail as target application programs.

When determining the target application program, as another embodiment, two application programs may be selected from currently running application programs, the sizes of the write quantities to the EMMC in the unit time of the two application programs are compared, the application program with the larger write quantity in the two application programs is selected to be continuously compared with other application programs, and so on until each application program participates in the comparison, and the application program with the larger write quantity obtained by the final comparison is determined as the target application program. In this embodiment, when selecting two applications, the applications may be selected randomly or according to a certain rule, for example, an application that may have a large write amount to the EMMC data is selected preferentially, and specifically, an application that is determined to be the target application is selected preferentially.

If the application program with the largest data write amount to the EMMC per unit time in each application program is at least two application programs, in one embodiment, the at least two application programs may be determined as the target application programs. In another embodiment, one of the at least two applications may be selected as the target application, such as randomly selecting one application, starting an earlier application when selecting the at least two applications, and so on.

According to one embodiment, the EMMC management module can manage the permission of an installed application program in the display device to perform write operation on the EMMC, so that after the target application program is determined, the target application program can be limited from continuously performing write operation on the EMMC by removing the write permission of the target application program on the EMMC.

For some applications, limiting their write permissions to the EMMC does not affect their normal operation. For example, most video players can write data into the memory to maintain normal operation even if their write permissions to the EMMC are removed.

However, for other applications, removing the write permission to the EMMC may cause the EMMC not to normally operate, and therefore, in an example, an application list may be preset, and all the applications in the list are the applications that cannot normally operate after the write permission to the EMMC is removed. As an embodiment, before executing step S43, if the target application is the application a in the application list, a prompt message is displayed to prompt that the writing amount of the application a is too large and that the removal of the writing authority may cause the application a to fail to operate normally, and whether the writing authority is removed is confirmed. In the embodiment, the writing authority of the application program A on the EMMC can be removed in response to the confirmation in the prompt message; in response to the confirmation in the prompt message that the write permission is not removed, the other applications except for the application a are determined to be the target application, for example, the application which is next to the application a in the amount of writing to the EMMC per unit time in the currently running application is determined to be the target application, and the process continues to step S43.

As another embodiment, before step S43 is executed, if the target application is the application a in the application sequence list, the write permission of the application a to the EMMC is not removed, the application with the write amount to the EMMC that is next to the application a per unit time in the currently running application is determined again as the target application, and step S43 is continuously executed.

It should be noted that the application program determined as the target application program is often an application program with abnormal operation except for the video playback program, and therefore, the write control method provided by the present application does not affect the normal operation of the application program in most cases.

As one embodiment, write permissions of all applications to the EMMC may be restored upon a display device reboot. Specifically, in response to a device restart instruction for the display device, the EMMC management service module restores the write authority of the application program to the EMMC for the application program from which the EMMC write authority has been removed. As another example, the write permissions of an application to an EMMC may be restored manually by a user.

After removing the write permission of the target application to the EMMC, in one example, an alarm message may be displayed on a display of the display device, where the alarm message indicates that the write amount per unit time of the target application to the EMMC is too large and/or the write permission of the target application to the EMMC has been removed. In one embodiment, the alarm information may be displayed in an overlapping manner on a current display screen of a display of the display device, and fig. 3A to 3B illustrate an alarm information diagram displayed on the display by taking a target application as an application a as an example. As shown in fig. 3A, alarm information 52 indicating that the amount of writing of the application a to the EMMC is excessive and that the writing authority of the application a to the EMMC has been removed is superimposed and displayed on the display screen of the display 51.

In one embodiment, the warning message may be used to prompt the target application to be uninstalled, and further, a selectable item may be provided for quickly uninstalling the target application, and the target application is uninstalled when the selectable item is detected to be selected. As shown in fig. 3B, alarm information 53 indicating that the write amount of the application a to the EMMC is too large and the application a can be uninstalled by pressing a "^ key" 531 on the display screen of the display 51 in an superimposed manner, where the "^ key" 531 is a key identification corresponding to a specified key on the control device. According to the alarm information shown in fig. 3B, the display apparatus uninstalls the application a in response to a key input instruction of a designated key.

In another example, after the target application is determined, an alert message may be displayed on the display to alert the target application of an excessive data write to the EMMC.

As an embodiment, after performing step S43, the EMMC management module and the EMMC monitoring module enter the next cycle of the current cycle, and return to performing steps S41 to S42 with the next cycle as the current cycle. Therefore, during the operation of the display device, whether the writing amount of each application program to the EMMC in unit time exceeds the writing index or not can be continuously monitored, and when the writing index is exceeded, the target application program is determined and the target application program is limited to perform writing operation on the EMMC.

This completes the description of the flow shown in fig. 2.

Through the process shown in fig. 2, the application program determines the application program with the largest data write-in amount to the EMMC in the unit time and limits the application program to perform the write-in operation on the EMMC when the total write-in amount of the application program to the EMMC in the unit time is greater than the write-in index, so that the loss of the service life of the EMMC can be effectively reduced, and the EMMC can be ensured to reach the expected service life as much as possible.

In other embodiments, in step S42, in the case that the total write amount of each application to the EMMC in the unit time is not calculated by the data write amount of each application to the EMMC in the unit time, the data write amount of each application to the EMMC in the unit time may be temporarily not calculated in step S42, and when it is determined in step S43 that the total write amount is greater than the write index, the data write amount of each application to the EMMC in the unit time is calculated again to determine the target application.

In other embodiments, a second write index may also be set for an application, i.e., when any application writes data to the EMMC in a unit time in an amount that exceeds the second write index, it may be considered that the lifetime of the current EMMC is being worn out too quickly, and applications that write data in an amount that exceeds the second write index may be restricted from performing write operations on the EMMC.

In some embodiments, the write rate of the application program to the EMMC may be used to replace the data write amount to the EMMC in the unit time in the above steps S41 to S43, that is, when the total write rate of each application program to the EMMC is greater than the rate index, the application program with the largest write rate to the EMMC in each application program is determined, and the write operation to the EMMC is limited.

In some embodiments, there may be at least two EMMCs on the display device, and when the process shown in fig. 2 is executed, the process shown in fig. 2 may be executed for each of the at least two EMMCs, or the process shown in fig. 2 may be executed for at least two EMMCs as a whole.

For facilitating understanding of practical applications, two additional modules are added to the display device in the flow shown in fig. 2, and fig. 4A-4B exemplarily show schematic diagrams of the additional modules in the display device, which are described below with reference to fig. 4A-4B:

first, some nouns appearing in FIG. 4A will be described:

EXT2, EXT3, EXT4, SquashFS: there are four different file systems that are used in the operating system to specify the storage structure of files on the EMMC. In the four file systems, EXT3 is a modified version of EXT2, and EXT4 is a modified version of EXT 3. It should be noted that the file systems are not limited to the above four types, and other file systems may be used in practical applications.

Virtual file system: the file system is a software layer in a Linux operating system and is used for providing a universal file system interface for an application program. The virtual file system enables devices to perform cross-file system operations, for example, a file may be copied from an EMMC with a file system of SquashFS to an EMMC with a file system of EXT4 via the virtual file system.

The following briefly describes the process of writing data to the EMMC by an application program in the display device, with reference to fig. 4A:

as shown in fig. 4A, there are 4 EMMCs in the display device, EMMC1, EMMC2, EMMC3, and EMMC4, respectively. Different file systems are respectively established on each EMMC, the file system of the EMMC1 is EXT2, the file system of the EMMC2 is EXT3, the file system of the EMMC3 is EXT4, and the file system of the EMMC4 is SquashFS. It should be noted that the creation of the file system is only an example, and in practical applications, the same file system may be created on different EMMCs, or other file systems other than the four file systems shown in fig. 4A may also be created on the EMMC.

As shown in fig. 4A, the display device has 4 applications installed therein, which are: application 1, application 2, application 3, and application 4. The number of EMMCs and the number and names of applications in fig. 4A are examples, and are not intended to limit the present application.

Taking the example of application 1 writing data to EMMC1, if application 1 writes some data to EMMC1, that data is written to EMMC1 via the virtual file system and the file system EXT2 of EMMC 1. Specifically, the process may include: the application 1 sends a data write request to the virtual file system, and the virtual file system calls an interface of the file system EXT2 in response to the data write request, and the file system EXT2 stores the data into a data block of the EMMC 1.

In one example, an EMMC monitoring module 61 and an EMMC management module 62 added in a controller of a display device are shown in fig. 4B. For one embodiment, the EMMC monitoring module 61 and the EMMC managing module 62 may respectively execute the flow shown in fig. 2 for 4 EMMCs shown in fig. 4B.

As another example, the EMMC monitoring module 61 and the EMMC management module 62 may perform the flow shown in fig. 2 for the 4 EMMCs shown in fig. 4B as a whole. Specifically, the EMMC monitoring module 61 counts the data write amount of each application program to each EMMC in the current period, and calculates the sum of the data write amounts of the application program to each EMMC in the current period as the data write amount of the application program to the entire EMMC for any application program in the application programs. And calculating the total write quantity of each application program to the whole EMMC in unit time according to the data write quantity of each application program to the whole EMMC. And when the total write quantity is larger than the write index, selecting the application program with the largest data write quantity to the whole EMMC in unit time as a target application program, and limiting the target application program to perform write operation on the EMMC.

In one embodiment, when the EMMCs are taken as a whole, the limiting target application performing a write operation on the EMMC may include: and limiting the target application program to write to all the EMMCs, or selecting the target EMMC with the maximum data write quantity of the target application program in unit time in each EMMC, and limiting the target application program to write to the target EMMC.

To facilitate understanding of the present embodiment, a simple example is as follows: taking application 1 as the target application, if application 1 writes to EMMC1-EMMC4 shown in fig. 4B in a unit time: 10M, 1M, 0, the application 1 may be restricted from writing to all the EMMCs, or the EMMC1 with the largest data write amount per unit time for the application 1 may be selected for each EMMC, and the application 1 may be restricted from writing to the EMMC 1.

This completes the description of fig. 4A-4B.

As shown in the above embodiments, the display device may execute the above steps S41 to S43 through added modules, so that when the total write amount per unit time of each application to the EMMC is greater than the write index, the application with the largest data write amount per unit time is restricted from continuing to write to the EMMC, thereby effectively reducing the lifetime loss of the EMMC.

While the preferred embodiments of the present application have been described, additional variations and modifications in those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. Therefore, it is intended that the appended claims be interpreted as including the preferred embodiment and all changes and modifications that fall within the scope of the present application.

It will be apparent to those skilled in the art that various changes and modifications may be made in the present application without departing from the spirit and scope of the application. Thus, if such modifications and variations of the present application fall within the scope of the claims of the present application and their equivalents, the present application is intended to include such modifications and variations as well.

Claims

1. A display device, comprising:

a display;

a controller, comprising:

the EMMC monitoring module is used for counting the data writing amount of each application program to the EMMC in the current period;

2. The display device of claim 1, wherein the write index is determined by:

calculating the maximum write-in quantity of the EMMC, wherein the maximum write-in quantity of the EMMC is the product of the maximum erasing and writing times of the flash memory of the EMMC and the capacity of the flash memory;

and calculating the ratio of the maximum writing amount to the preset use time of the EMMC to be used as a writing index.

3. The display device of claim 1, wherein the EMMC management module is further configured to perform:

after the application program with the largest data writing amount in the unit time is determined, alarm information is displayed on the display, and the alarm information indicates that the data writing amount of the determined application program to the EMMC is too large.

4. The display device of claim 1, wherein the EMMC monitoring module is further configured to:

and after the EMMC management module limits the determined application program to write into the EMMC, entering the next period of the current period, taking the next period as the current period, and returning to perform statistics on the data write quantity of each application program to the EMMC in the current period.

5. The display device of claim 1, wherein the EMMC management module is specifically configured to:

and calculating the sum of the data writing quantities of each application program in unit time, and taking the sum of the data writing quantities as the total writing quantity in unit time corresponding to the current period.

6. A method of write control, the method comprising:

calculating the data writing amount of each application program in unit time according to the data writing amount of each application program to the EMMC; determining the total write-in quantity in the unit time corresponding to the current period according to the data write-in quantity of each application program in the unit time;

7. The method of claim 6, wherein the write index is determined by:

8. The method of claim 6, wherein after determining the application program having the largest amount of data written to the EMMC per unit time, the method further comprises:

and displaying alarm information, wherein the alarm information indicates that the data writing amount of the determined application program to the EMMC is too large.

9. The method of claim 6, further comprising:

and limiting the determined application program to perform write operation on the EMMC, entering the next period of the current period, taking the next period as the current period, and returning to perform statistics on the data write quantity of each application program to the EMMC in the current period.

10. The method according to claim 6, wherein the determining the total writing amount in the unit time corresponding to the current cycle according to the data writing amount in the unit time of each application program comprises: