CN111757181A - Method for reducing network media definition jitter and display equipment - Google Patents
Method for reducing network media definition jitter and display equipment Download PDFInfo
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- CN111757181A CN111757181A CN202010606141.3A CN202010606141A CN111757181A CN 111757181 A CN111757181 A CN 111757181A CN 202010606141 A CN202010606141 A CN 202010606141A CN 111757181 A CN111757181 A CN 111757181A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
- H04N21/442—Monitoring of processes or resources, e.g. detecting the failure of a recording device, monitoring the downstream bandwidth, the number of times a movie has been viewed, the storage space available from the internal hard disk
- H04N21/44209—Monitoring of downstream path of the transmission network originating from a server, e.g. bandwidth variations of a wireless network
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
- H04N21/438—Interfacing the downstream path of the transmission network originating from a server, e.g. retrieving MPEG packets from an IP network
Abstract
The application discloses a method and display equipment for reducing network media definition jitter, which are used for predicting network speed aiming at different network environments, reasonably selecting pictures with enough resolution and ensuring that a user can stably watch high-definition network videos. The method comprises the following steps: responding to a playing instruction which indicates the network program and is input by a user, and downloading data corresponding to the lowest definition of the network program for playing; storing key information of downloaded data in a bandwidth detection queue, wherein the key information comprises data size and a time stamp for queuing; predicting and counting the network speed according to the key information of the bandwidth detection queue and the dynamically calculated time window; if the current definition is not matched with the network speed, updating the definition according to the network speed; if the data needs to be downloaded continuously, downloading the updated data corresponding to the definition for playing; and repeating the step of storing the key information of the downloaded data in the bandwidth detection queue at preset time intervals until all the data are downloaded.
Description
Technical Field
The present application relates to the field of display technologies, and in particular, to a method for reducing jitter of network media definition and a display device.
Background
Multimedia is one of the most widely used content transmission schemes in the current network, and with the development and progress of multimedia technology, people have higher and higher requirements on the appearance of multimedia.
Most of the existing technologies for network media adaptive picture definition switch to the picture definition most suitable for the current network. If the network is unstable, the screen may be frequently switched, and thus the user viewing experience may be deteriorated. For this problem, a common practice of solution suppliers and other manufacturers for this problem is as shown in fig. 2, and a suitable definition picture is found to be played each time a certain period of network speed is predicted, which can meet the viewing experience of the user to a certain extent. However, the time length T taken in the definition matching process shown in fig. 2 is a fixed value, and is an empirical value of network speed statistics in an ideal stable network. If the network is unstable (the network speed is high and low), the network speed calculated by relying on the fixed time value is also greatly changed, so that the matching of the program definition is influenced, and the playing picture can be switched back and forth along with the change. On the other hand, using a fixed window time also does not guarantee that all stable networks do a small number of clear switches or matches. And because each network environment stability is different, the definition specification that each film source provided is different, adopt single time window certainly can not satisfy all film sources self-adaptation broadcast demands under different networks simultaneously.
Disclosure of Invention
The embodiment of the application provides a method and display equipment for reducing network media definition jitter, which are used for predicting network speed according to different network environments, reasonably selecting pictures with enough resolution and ensuring that a user can stably watch high-definition network videos.
In a first aspect, there is provided a display device comprising:
a display;
a user interface;
a controller for performing:
responding to a playing instruction which is input by a user and indicates a network program, and downloading data corresponding to the lowest definition of the network program;
storing key information of downloaded data in a bandwidth detection queue, wherein the key information comprises data size and a time stamp for queuing;
predicting and counting the network speed according to the key information of the bandwidth detection queue and the dynamically calculated time window;
if the current definition is not matched with the network speed, updating the definition according to the network speed;
if the data is required to be downloaded continuously, downloading the updated data corresponding to the definition;
and repeating the step of storing the key information of the downloaded data in the bandwidth detection queue at preset time intervals until all the data are downloaded.
In some embodiments, the controller is further configured to perform:
and refreshing the definition switching time record once when the definition is updated according to the network speed.
In some embodiments, the controller is further configured to perform dynamically calculating a time window, including:
and if the current time exceeds the time range of the current time window, updating the next time window according to the length of the current time window, the length of the last time window, the definition switching times in the time range of the current time window and the definition switching times in the time range of the last time window.
In some embodiments, the predicting and counting the network speed according to the critical information of the bandwidth detection queuing and the dynamically calculated time window specifically includes:
taking out the data queue record of the latest dynamically calculated time window length to obtain the data size and the queue record time;
if the time of the queue recording is less than the length of the dynamically calculated time window, the network speed is counted according to the data size and the queue recording time;
and if the time of the queue record is equal to the length of the dynamically calculated time window, counting the network speed according to the data size and the length of the dynamically calculated time window.
In some embodiments, updating the sharpness according to the network speed specifically includes:
acquiring a description file of the network program, wherein the description file comprises definition specifications provided by the network program;
and finding out the definition which is most matched with the network speed from the definition specification and updating.
In a second aspect, a method for reducing network media sharpness jitter is provided, comprising:
responding to a playing instruction which is input by a user and indicates a network program, and downloading data corresponding to the lowest definition of the network program;
storing key information of downloaded data in a bandwidth detection queue, wherein the key information comprises data size and a time stamp for queuing;
predicting and counting the network speed according to the key information of the bandwidth detection queue and the dynamically calculated time window;
if the current definition is not matched with the network speed, updating the definition according to the network speed;
if the data is required to be downloaded continuously, downloading the updated data corresponding to the definition;
and repeating the step of storing the key information of the downloaded data in the bandwidth detection queue at preset time intervals until all the data are downloaded.
In some embodiments, the method further comprises:
and refreshing the definition switching time record once when the definition is updated according to the network speed.
In some embodiments, dynamically calculating the time window specifically includes:
and if the current time exceeds the time range of the current time window, updating the next time window according to the length of the current time window, the length of the last time window, the definition switching times in the time range of the current time window and the definition switching times in the time range of the last time window.
In some embodiments, the predicting and counting the network speed according to the critical information of the bandwidth detection queuing and the dynamically calculated time window specifically includes:
taking out the data queue record of the latest dynamically calculated time window length to obtain the data size and the queue record time;
if the time of the queue recording is less than the length of the dynamically calculated time window, the network speed is counted according to the data size and the queue recording time;
and if the time of the queue record is equal to the length of the dynamically calculated time window, counting the network speed according to the data size and the length of the dynamically calculated time window.
In some embodiments, updating the sharpness according to the network speed specifically includes:
acquiring a description file of the network program, wherein the description file comprises definition specifications provided by the network program;
and finding out the definition which is most matched with the network speed from the definition specification and updating.
In the above embodiment, the display device makes the network speed prediction and matches the most suitable definition according to the dynamically calculated time window. The time window can ensure that all stable networks do definition switching or matching for a few times through dynamic calculation, so that frequent jitter of the definition of the network media is avoided, and the influence of factors such as platform performance, streaming media architecture, network environment, film source definition and the like is avoided. The network speed is predicted according to different network environments, the picture with enough resolution is reasonably selected, and the user can be guaranteed to stably watch the network video with high definition.
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;
a block diagram of the architectural configuration of the operating system in the memory of the display device 200 is illustrated in fig. 1D.
FIG. 2 is a flow chart illustrating a method of fixed-time sharpness matching;
a flow chart of a method of reducing network media definition jitter is illustrated in fig. 3.
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 one or more examples, it is to be understood that each aspect of the disclosure can be utilized independently and separately from other aspects of the disclosure to provide a complete disclosure.
The terms "comprises" and "comprising," and any variations thereof, as used herein, 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 in this application refers to a user's behavior through a change in hand shape or an action such as hand motion to convey a desired idea, action, purpose, or result.
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 functions of the physical keys as arranged in the remote control 100A by operating various function keys or virtual buttons of the 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 be communicatively connected 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. By way of 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 of the control device 100, as well as the internal components of the communication cooperation, 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 element 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 output interface 285, and a power supply 290.
The tuner demodulator 210 receives the broadcast television signal in a wired or wireless manner, may perform modulation and demodulation processing such as amplification, mixing, and resonance, and is configured 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 can demodulate the analog signal and the digital signal according to the different kinds of the received television signals.
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, etc.
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 apparatus 200 may be adjusted to display a color temperature of an image that is cooler; when the temperature is lower, the display device 200 may be adjusted to display a warmer color temperature 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 250 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 image), 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, the controller 250 includes a Random Access Memory (RAM)251, a Read Only Memory (ROM)252, a graphics processor 253, a CPU processor 254, a communication interface 255, and a 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. When the display apparatus 200 starts power-on upon receiving the power-on signal, the CPU processor 254 executes a system boot instruction in the ROM252, copies the operating system stored in the memory 260 to the RAM251, and starts running the boot 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 interactive 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 preload 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 state of 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 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 NETFLIX applications, setup applications, media center applications, 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 enter user commands on a Graphical User Interface (GUI) displayed on the display 275, and the user interface 265 receives the user input commands through the GUI. Specifically, the user interface 265 may receive user input commands for controlling the position of a selector in the 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 synthesizing 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, images 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.
In other exemplary embodiments, video processor 270 may comprise one or more chips. 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.
A flow chart of a method of reducing network media definition jitter is illustrated in fig. 3. The embodiment of the application does not need to pay attention to specific implementation inside each module.
Referring to fig. 3, the method includes the following steps:
step S31: a playback instruction indicating a network program, which is input by a user operating the control device, is received through the user interface. For example, the user interface may receive an instruction to play a certain network program corresponding to a confirmation key input by the user by pressing the confirmation key on the control device.
Step S32: responding to a playing instruction which indicates a network program and is input by a user, and downloading data corresponding to the lowest definition of the network program from a server for playing;
step S33: storing key information of downloaded data in a bandwidth detection queue, wherein the key information comprises data size and a time stamp for queuing;
step S34: predicting and counting the network speed according to the key information of the bandwidth detection queue and the dynamically calculated time window;
in some embodiments, dynamically calculating the time window specifically includes:
and if the current time exceeds the time range of the current time window, updating the next time window according to the length of the current time window, the length of the last time window, the definition switching times in the time range of the current time window and the definition switching times in the time range of the last time window.
For example: taking the empirical value T (ideal stable network) of the fixed time length of the wire speed statistics as the initialization center value T0 under the current network, i.e. T (now) is T0 for the first time of statistics. The wire speed statistic frequency, i.e. the time Interval, is fixed to Interval, where Interval < T0.
Assuming that the current timestamp when t (now) is updated is recorded as t (now), the time range r (now) of this statistics is corresponding to t (now) -t (now) + t (now), and the corresponding number of sharpness switching times in this time range is recorded as n (now).
And (3) taking the latest T (new) time length data from the bandwidth detection queue to predict and count the network speed each time when the fixed statistical network speed time arrives.
And matching the statistical network speed with the definition of the program every time to find the most appropriate definition. If the definition needs to be updated this time, refresh N (now) records N (now) + 1.
If the current time T '(now) is not within the range of R (now), i.e. T' (now) is outside the range of R (now), then the value T of the next net speed statistics time length is calculated as T (next).
The specific calculation needs to consider three cases:
if n (now) < (n (prev) × (t (now))/t (prev))/a), then t (next) ═ t (now))/b;
if n (now) > (n (prev) > (t (now)/t (prev) >) a), then t (next) > (t) (now) b;
if (n (prev) ((t) (now)/t (prev))/a < n (now)) < (n (prev) ((t) (now)/t (prev)) > a), then t (next) ═ t (now) is maintained.
Wherein, a, b are constants, can set for according to actual need, for example: a, b may both be set to 2. T (now) is the current time window length, t (prev) is the last time window length, t (next) is the next time window length, n (now) is the number of sharpness switches in the time range of the current time window, and n (prev) is the number of sharpness switches in the time range of the last time window.
After t (next), t (prev) ═ t (now), n (prev) ═ n (now), and t (now) are updated, and the corresponding time range r (now) is also updated.
And continuously optimizing and adjusting the value T dynamically in the updated time range R (now), and continuously carrying out network speed statistics and definition matching operation on the bandwidth detection queue.
In some embodiments, the predicting and counting the network speed according to the critical information of the bandwidth detection queuing and the dynamically calculated time window specifically includes:
taking out the data queue record of the latest dynamically calculated time window length to obtain the data size and the queue record time;
for example: suppose that the latest data is obtained as the time to queue, and the time to queue 0 corresponding to the data farthest from the current time is time-t (now). And carrying out network speed statistics on the queue record of the taken dynamically calculated time length T (now) data.
If the time of the enqueue record is less than the dynamically calculated time window length t (now), the network speed is counted according to the data size and the enqueue record time (the actual time of the data being fetched), i.e. the network speed is equal to the total size of the data being fetched/the actual time of the data being fetched.
If the time recorded by the queue is equal to the dynamically calculated time window length t (now), the network speed is counted according to the data size and the dynamically calculated time window length t (now), i.e. the network speed is equal to the total size of the data/t (now).
Step S35: and judging whether the current definition is matched with the network speed.
If the current sharpness does not match the wire speed, step S36 is performed.
Step S36: updating the definition according to the network speed;
in some embodiments, updating the sharpness according to the network speed specifically includes:
acquiring a description file of the network program, wherein the description file comprises definition specifications provided by the network program;
and finding out the definition which is most matched with the network speed from the definition specification and updating.
Step S37: if the data needs to be downloaded continuously, downloading the updated data corresponding to the definition for playing;
if the current sharpness matches the web speed, go to step S38.
Step S38: if the data is required to be downloaded continuously, the data corresponding to the current definition download is maintained to be played;
step S39: the step S33 is repeatedly executed every preset time until all data downloading is completed.
And the display equipment makes network speed prediction according to the time window after dynamic calculation and matches the most appropriate definition. The time window can ensure that all stable networks do definition switching or matching for a few times through dynamic calculation, so that frequent jitter of the definition of the network media is avoided, and the influence of factors such as platform performance, streaming media architecture, network environment, film source definition and the like is avoided. The network speed is predicted according to different network environments, the picture with enough resolution is reasonably selected, and the user can be guaranteed to stably watch the network video with high definition.
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 preferred embodiments and all alterations and modifications as fall within the scope of the 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 (10)
1. A display device, comprising:
a display;
a user interface;
a controller for performing:
responding to a playing instruction which is input by a user and indicates a network program, and downloading data corresponding to the lowest definition of the network program;
storing key information of downloaded data in a bandwidth detection queue, wherein the key information comprises data size and a time stamp for queuing;
predicting and counting the network speed according to the key information of the bandwidth detection queue and the dynamically calculated time window;
if the current definition is not matched with the network speed, updating the definition according to the network speed;
if the data is required to be downloaded continuously, downloading the updated data corresponding to the definition;
and repeating the step of storing the key information of the downloaded data in the bandwidth detection queue at preset time intervals until all the data are downloaded.
2. The display device according to claim 1, wherein the controller is further configured to perform:
and refreshing the definition switching time record once when the definition is updated according to the network speed.
3. The display device of claim 2, wherein the controller is further configured to perform dynamically calculating a time window, comprising:
and if the current time exceeds the time range of the current time window, updating the next time window according to the length of the current time window, the length of the last time window, the definition switching times in the time range of the current time window and the definition switching times in the time range of the last time window.
4. The display device according to claim 1, wherein the predicting and counting the network speed according to the key information of the bandwidth detection queue and the dynamically calculated time window specifically comprises:
taking out the data queue record of the latest dynamically calculated time window length to obtain the data size and the queue record time;
if the time of the queue recording is less than the length of the dynamically calculated time window, the network speed is counted according to the data size and the queue recording time;
and if the time of the queue record is equal to the length of the dynamically calculated time window, counting the network speed according to the data size and the length of the dynamically calculated time window.
5. The display device according to claim 1, wherein updating the sharpness according to the wire speed specifically comprises:
acquiring a description file of the network program, wherein the description file comprises definition specifications provided by the network program;
and finding out the definition which is most matched with the network speed from the definition specification and updating.
6. A method for reducing network media sharpness jitter, comprising:
responding to a playing instruction which is input by a user and indicates a network program, and downloading data corresponding to the lowest definition of the network program;
storing key information of downloaded data in a bandwidth detection queue, wherein the key information comprises data size and a time stamp for queuing;
predicting and counting the network speed according to the key information of the bandwidth detection queue and the dynamically calculated time window;
if the current definition is not matched with the network speed, updating the definition according to the network speed;
if the data is required to be downloaded continuously, downloading the updated data corresponding to the definition;
and repeating the step of storing the key information of the downloaded data in the bandwidth detection queue at preset time intervals until all the data are downloaded.
7. The method of claim 6, further comprising:
and refreshing the definition switching time record once when the definition is updated according to the network speed.
8. The method of claim 7, wherein dynamically calculating the time window comprises:
and if the current time exceeds the time range of the current time window, updating the next time window according to the length of the current time window, the length of the last time window, the definition switching times in the time range of the current time window and the definition switching times in the time range of the last time window.
9. The method according to claim 6, wherein the predicting and counting the network speed according to the critical information of the bandwidth detection queue and the dynamically calculated time window specifically comprises:
taking out the data queue record of the latest dynamically calculated time window length to obtain the data size and the queue record time;
if the time of the queue recording is less than the length of the dynamically calculated time window, the network speed is counted according to the data size and the queue recording time;
and if the time of the queue record is equal to the length of the dynamically calculated time window, counting the network speed according to the data size and the length of the dynamically calculated time window.
10. The method according to claim 6, wherein updating the sharpness based on the network speed specifically comprises:
acquiring a description file of the network program, wherein the description file comprises definition specifications provided by the network program;
and finding out the definition which is most matched with the network speed from the definition specification and updating.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114666626A (en) * | 2020-12-23 | 2022-06-24 | 深圳Tcl新技术有限公司 | Data updating method, intelligent terminal and storage medium |
| CN115037986A (en) * | 2021-03-04 | 2022-09-09 | 北京字跳网络技术有限公司 | Video self-adaptive playing method and device |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1328126A1 (en) * | 1996-06-26 | 2003-07-16 | AT&T Corp. | Method for communicating audiovisual programs over a communications network |
| CN107071529A (en) * | 2017-03-29 | 2017-08-18 | 咪咕视讯科技有限公司 | A kind of HLS video broadcasting methods, terminal and server |
| CN109379632A (en) * | 2018-10-25 | 2019-02-22 | 中国地质大学（武汉） | A kind of progressive switching method of code rate and system of dynamic self-adapting HTTP stream |
| CN110121100A (en) * | 2019-05-28 | 2019-08-13 | 平安科技（深圳）有限公司 | Method for down loading, device, terminal and the computer readable storage medium of media file |
-
2020
- 2020-06-29 CN CN202010606141.3A patent/CN111757181B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1328126A1 (en) * | 1996-06-26 | 2003-07-16 | AT&T Corp. | Method for communicating audiovisual programs over a communications network |
| CN107071529A (en) * | 2017-03-29 | 2017-08-18 | 咪咕视讯科技有限公司 | A kind of HLS video broadcasting methods, terminal and server |
| CN109379632A (en) * | 2018-10-25 | 2019-02-22 | 中国地质大学（武汉） | A kind of progressive switching method of code rate and system of dynamic self-adapting HTTP stream |
| CN110121100A (en) * | 2019-05-28 | 2019-08-13 | 平安科技（深圳）有限公司 | Method for down loading, device, terminal and the computer readable storage medium of media file |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114666626A (en) * | 2020-12-23 | 2022-06-24 | 深圳Tcl新技术有限公司 | Data updating method, intelligent terminal and storage medium |
| CN115037986A (en) * | 2021-03-04 | 2022-09-09 | 北京字跳网络技术有限公司 | Video self-adaptive playing method and device |
| CN115037986B (en) * | 2021-03-04 | 2023-06-06 | 北京字跳网络技术有限公司 | Video self-adaptive playing method and device |
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