CN103997677B - A kind of player method and playback equipment of audio frequency and video - Google Patents

Abstract

An audio and video playback method and playback device, the local playback device and the external playback device are connected through HDMI cable communication, the method includes: the local playback device receives a playback mode setting instruction input by a user, and the instruction includes a playback mode setting parameter; This parameter sets the playback mode of the audio and video, which includes the independent playback mode of the local playback device, the independent playback mode of the external playback device, and the mixed playback mode; receive the playback mode selected by the user; if the playback mode selected by the user is the mixed playback mode, pass The HDMI cable receives the external audio and video data from the external playback device; plays the local video data and the external video data through different preset windows at the same time; splits the local audio data and the external audio data according to the audio split method corresponding to the mixed playback mode play simultaneously. The invention can improve the switching efficiency between playback devices, and can avoid damage to the HDMI interface.

Description

Audio and video playback method and playback device

technical field

The invention relates to the technical field of digital television, in particular to an audio and video playback method and playback device.

Background technique

At present, many families have two or more set-top box terminal devices at the same time. For example, a family owns DVB playback devices, DVD playback devices and OTT (Over The Top) playback devices at the same time. Among them, DVB playback devices are used to receive digital TV and radio programs. , can support almost all broadcasting and interactive multimedia applications; DVD playback equipment is used to play standard TV-definition movies and high-quality music; OTT playback equipment is a collection of portals, online games, online shopping, online banking , VoIP, instant messaging and other services in one Internet TV. In practice, if the user wants to switch a playback device connected to the TV to another playback device to play audio and video, he can only manually plug and unplug the HDMI (High-Definition Multimedia Interface, high-definition multimedia interface) line. The way to complete the switch between the TV and the playback device.

The above-mentioned manual plugging and unplugging of the HDMI cable to complete the switch between the TV and the playback device is not only cumbersome and time-consuming, but also frequent HDMI cable plugging and unplugging is easy to damage the HDMI interface, thereby affecting the normal output audio and video of the playback device.

Contents of the invention

The embodiment of the invention discloses an audio and video playing method and a playing device, which can improve switching efficiency between playing devices and avoid damage to HDMI interfaces.

The first aspect of the embodiments of the present invention provides a method for playing audio and video. In the method, the local playback device and the external playback device are connected through an HDMI cable. The method includes:

The local playback device receives a playback mode setting instruction input by a user, and the playback mode setting instruction includes a playback mode setting parameter;

The local playback device sets the playback mode of audio and video according to the playback mode setting parameters, and the playback mode includes a local playback device independent playback mode, an external playback device independent playback mode, and a mixed playback mode;

The local playback device receives the playback mode selected by the user;

If the playback mode selected by the user is the mixed playback mode, the local playback device receives the external audio and video data sent by the external playback device through the HDMI cable;

The local playback device plays the local video data included in the local audio and video data and the external video data included in the external audio and video data simultaneously through different preset windows;

And, the local playback device splits the local audio data included in the local audio and video data and the external audio data included in the external audio and video data according to the audio splitting method corresponding to the mixed playback method and plays them simultaneously.

The second aspect of the embodiment of the present invention provides an audio and video playback device, the playback device is connected to an external playback device through an HDMI cable, and the playback device includes:

The first unit is configured to receive a playback mode setting instruction input by a user, and the playback mode setting instruction includes a playback mode setting parameter;

The second unit is used to set the playback mode of audio and video according to the playback mode setting parameters received by the first unit, and the playback mode includes a local playback device independent playback mode, an external playback device independent playback mode, and a mixed playback mode. ;

a third unit, configured to receive the playback mode selected by the user;

The fourth unit is configured to receive external audio and video data sent by the external playback device through the HDMI cable when the playback mode selected by the user received by the third unit is the hybrid playback mode;

The fifth unit is used to simultaneously play the local video data included in the local audio and video data and the external video data included in the external audio and video data received by the fourth unit through different preset windows; The audio splitting mode corresponding to the mixed playback mode splits the local audio data included in the local audio and video data and the external audio data included in the external audio and video data received by the fourth unit and plays them simultaneously.

In the embodiment of the present invention, the local playback device receives the playback mode setting instruction input by the user, and the playback mode setting instruction includes the playback mode setting parameters, and sets the audio and video playback mode according to the playback mode setting parameters. The modes include the independent playback mode of the local playback device, the independent playback mode of the external playback device, and the mixed playback mode. The local playback device receives the playback mode selected by the user. If the playback mode selected by the user is the mixed playback mode, the local The playback device receives the external audio and video data sent by the external playback device through the HDMI cable. Further, the local playback device uses the local video data included in the local audio and video data and the external video data included in the external audio and video data respectively through preset settings. Different windows of different windows are played at the same time, and the local playback device splits the local audio data included in the local audio and video data and the external audio data included in the external audio and video data according to the audio distribution method corresponding to the mixed playback method. play. By implementing the present invention, users can switch between playback devices without frequently manually plugging and unplugging HDMI cables, thereby improving switching efficiency between playback devices and avoiding damage to HDMI interfaces.

Description of drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings that need to be used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description are only These are some embodiments of the present invention. Those skilled in the art can also obtain other drawings based on these drawings without creative work.

Fig. 1 is a schematic flow chart of an audio and video playback method disclosed in an embodiment of the present invention;

Fig. 2 is a schematic flow chart of another audio and video playback method disclosed in the embodiment of the present invention;

Fig. 3 is a schematic flow chart of a method in which a local controller controls a playback operation in an audio and video playback method disclosed in an embodiment of the present invention;

FIG. 4 is a schematic structural diagram of a communication connection disclosed by an embodiment of the present invention;

Fig. 5 is a schematic structural diagram of an audio and video playback device disclosed in an embodiment of the present invention;

6 is a schematic structural diagram of another audio and video playback device disclosed in an embodiment of the present invention;

Fig. 7 is a schematic structural diagram of another audio and video playback device disclosed by an embodiment of the present invention.

detailed description

The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

The embodiment of the invention discloses an audio and video playing method and a playing device, which can improve switching efficiency between playing devices and avoid damage to HDMI interfaces. Each will be described in detail below.

Please refer to FIG. 1 . FIG. 1 is a schematic flowchart of an audio and video playback method disclosed in an embodiment of the present invention. In the audio and video playback method described in FIG. 1 , multiple HDMI input ports are configured on the local playback device, and multiple external playback devices are supported to be connected to the local playback device through HDMI data cables. The local playback device can be an OTT playback device, a DVB playback device, a DVD playback device, and other devices that can integrate an HDMI interface and have an audio and video playback function, which is not limited in the embodiment of the present invention; the external playback device can also be an OTT playback device, DVB The embodiments of the present invention are not limited to playback devices, DVD playback devices, and other devices that can integrate HDMI interfaces and have audio and video playback functions.

In this embodiment, the local playback device communicates with the external playback device through an HDMI data cable in advance, as shown in Figure 1, the method includes:

101. The local playback device receives a playback mode setting instruction input by a user, where the playback mode setting instruction includes playback mode setting parameters.

In the embodiment of the present invention, after the external playback device is connected to the local playback device through the HDMI data cable, the user inputs the playback mode setting instruction to the local playback device by operating the local playback device, and the user can directly operate the designated button on the local playback device, Instructions can also be input through a dedicated controller configured on the local playback device.

102. The local playback device sets the playback mode of the audio and video according to the playback mode setting parameters, and the playback mode includes the independent playback mode of the local playback device, the independent playback mode of the external playback device, and the mixed playback mode.

As an optional implementation, the independent playback mode of the local playback device means that the local playback device only selects the audio and video of the local playback device as an output source for independent playback, and cuts off the input channel of the external playback device.

As an optional implementation, the independent playback mode of the external playback device refers to that the local playback device only selects the audio and video of the external playback device imported through the HDMI data cable as the output source for independent playback, and turns off the audio and video of the local playback device. signal output.

As an optional implementation manner, the mixed playback method includes method 1, the local playback device simultaneously selects the video of the local playback device and the video of the external playback device imported through the HDMI data cable for mixed and simultaneous playback, and local playback The device selects the audio of the local playback device for direct playback, and at the same time, the audio of the external playback device imported through the HDMI data cable is transmitted and played using the Bluetooth driver interface integrated in the local playback device. or,

Method 2: The local playback device simultaneously selects the video of the local playback device and the video of the external playback device imported through the HDMI data cable for mixed and simultaneous playback, and the local playback device selects the audio of the external playback device imported through the HDMI data cable for playback. Play directly, and at the same time, use the Bluetooth driver interface integrated in the local playback device to transmit and play the audio of the local playback device.

In one embodiment, the playback mode of the local playback device is set according to the playback mode setting parameters input by the user. For example, if the parameter input by the user is 1, the corresponding playback mode of the background program setting is the independent playback mode of the local playback device; if the parameter input by the user is 2, the corresponding playback mode of the background program setting is the independent playback mode of the external playback device, and the user input If the parameter is 3, then the background program sets the corresponding playback mode as mode 1 in the hybrid playback mode, and if the parameter input by the user is 4, then the background program sets the corresponding playback mode as mode 2 in the hybrid playback mode. There are many other situations of playing modes corresponding to the playing mode setting parameters input by the user, which are not limited in this embodiment of the present invention.

103. The local playback device receives the playback mode selected by the user.

In the embodiment of the present invention, the local playback device receives the user's input operation again. Similarly, the user can choose to directly operate the designated button on the local playback device, or select a dedicated controller configured by the local playback device to input. For the input parameters, find the playback mode corresponding to the parameters input by the user that has been set in the background program in step 102.

104. If the playback mode selected by the user is a mixed playback mode, the local playback device receives the external audio and video data sent by the external playback device through the HDMI cable.

In the embodiment of the present invention, when the playback mode corresponding to the parameter input by the user in step 103 is a mixed playback mode, the local playback device receives the external audio and video data sent by the external playback device in real time through the HDMI cable, wherein the mixed playback mode can be Mode 1 in the hybrid playback mode may also be mode 2 in the hybrid playback mode.

In the embodiment of the present invention, the HDMI interface is selected as the access mode of the external playback device and the local playback device, and the external playback device is connected to the HDMI interface of the local playback device through the HDMI data line, and the local playback device can be very accurate and convenient. Obtain the data content transmitted by the external playback device through the HDMI interface. HDMI is the first digital interface that supports transmission on a single cable, uncompressed full digital high-definition, multi-channel audio and intelligent format and control command data, which can quickly transmit large-capacity data, and the transmitted content It is a purely digital format, which is conducive to the carrying and transmission of high-definition audio and video programs, and is convenient for the application side to extract and process data. HDMI uses TMDS (TimeMinimized Differential Signal) to minimize the transmission of differential signal transmission technology. TMDS uses a differential transmission method, which uses the voltage difference between two pins to transmit signals. Each HDMI connection includes 3 TMDS transmission channels for data transmission, and 1 independent TMDS clock channel to ensure the unified timing required for transmission. In one clock cycle, each TMDS channel can transmit 10bit data flow. And this 10bit data is composed of several different encoding formats. The data transmitted by the external terminal through HDMI divides the video signal into five signals of R, G, B, H, and V, and uses TMDS technology to encode, and transmits the three primary colors of R, G, and B through three transmission channels , while the H and V signals representing position information are arranged to be transmitted in the B signal channel, and the redundant positions of the R and G signal channels are used to transmit audio signals.

Based on the above knowledge, the present invention analyzes the composition of the audio and video data packets as follows. The images played by the playback device are composed of several continuous pictures, and each image is composed of a large number of pixels, and the pixels The actual number is related to the actual resolution of the film source. For example, for a film source in 1280*720 format, each video picture is composed of 1280*720 pixels, and each pixel is It is composed of three primary colors of R, G, and B. If each primary color is represented by 1 byte, then in the display memory distribution of the terminal system, each pixel occupies three bytes (Byte) of space, that is Occupying 24 bit (bit) space, the video image we see through the TV is the result of the electron gun in the TV equipment launching the collection of pixels of these different colors to the fluorescent screen.

In the embodiment of the present invention, the local playback device receives the data transmitted by the external playback device through the three TMDS channels in real time, and determines the type of content transmitted in the current TMDS data channel according to the information content carried by the TMDS clock channel. These types are divided into : Video data, audio data and control data, etc. According to the obtained information, the content information of each pixel contained in each video image and the current audio information data are obtained by analyzing it.

105. The local playback device plays the local video data included in the local audio and video data and the external video data included in the external audio and video data simultaneously through different preset windows, and, according to the audio splitting method corresponding to the mixed playback method, the local The local audio data included in the audio and video data and the external audio data included in the external audio and video data are split and played simultaneously.

In the embodiment of the present invention, the local playback device plays the local video data included in the local audio and video data and the external video data included in the external audio and video data simultaneously through different preset windows, including:

The local playback device obtains the window setting parameters input by the user, and sets the positions and sizes of the windows for playing the local video data and the windows for playing the external video data according to the window setting parameters;

The local playback device compresses the local video data to obtain compressed local compressed video data suitable for the size of the window used to play the local video data;

The local playback device compresses the external video data to obtain compressed external compressed video data suitable for the size of the window used to play the external video data;

The local playback device plays the local compressed video data and the external compressed video data simultaneously through the window for playing the local video data and the window for playing the external video data respectively.

As an optional implementation manner, when the mixed playback mode is Mode 1 in the mixed playback mode, the local playback device divides the audio and video data included in the local audio and video data according to the audio distribution mode corresponding to the mixed playback mode. The local audio data and the external audio data included in the external audio and video data are split and played simultaneously, including:

The local playback device plays the local audio data through the local playback device, and simultaneously plays the external audio data through the Bluetooth device.

As an optional implementation manner, when the mixed playback mode is Mode 2 in the mixed playback mode, the local playback device includes the local audio and video data according to the audio splitting mode corresponding to the mixed playback mode. The local audio data and the external audio data included in the external audio and video data are split and played simultaneously, including:

The local playback device plays the external audio data through the local playback device, and at the same time plays the local audio data through a Bluetooth device.

By implementing the method described in FIG. 1 , the user can switch between playback devices without manually plugging and unplugging HDMI cables frequently, thereby improving the switching efficiency between playback devices and avoiding damage to the HDMI interface.

Please refer to FIG. 2 . FIG. 2 is a schematic flowchart of another audio and video playback method disclosed in an embodiment of the present invention. The local playback device communicates with the external playback device through an HDMI data cable in advance, as shown in Figure 2, including the following steps:

201. The local playback device receives a playback mode setting instruction input by a user, where the playback mode setting instruction includes playback mode setting parameters.

As an optional implementation, the above instruction for setting the playback mode received by the user may be an instruction sent by the user operating a designated button on the local playback device, or an instruction sent by the user operating the special remote control configured by the local playback device. Specifies the command sent by the button.

202. The local playback device sets an audio and video playback mode according to the playback mode setting parameters, and the playback mode includes a local playback device independent playback mode, an external playback device independent playback mode, and a mixed playback mode.

Step 202 may specifically adopt step 102 provided in the above embodiment, and no repeated description is required here.

203. The local playback device receives the playback mode selected by the user.

As an optional implementation, the above-mentioned playback mode selected by the user is directly related to the subsequent operation process. For example, when the playback mode selected by the user is the independent playback mode of the local playback device, then step 205 is no longer needed. In 207, only the audio and video data of the local playback device is selected to play; when the playback mode selected by the user is the independent playback mode of the external playback device, then in step 207, only the external audio of the external playback device sent by the HDMI cable in step 205 is selected. The video data is played; when the playback mode selected by the user is a mixed playback mode, subsequent steps are performed.

204. The local playback device respectively establishes a local video data buffer, a local audio data buffer, an external video data buffer, and an external audio data buffer.

As an optional implementation, this step is feasible before step 201 or before step 202 or before step 203. The above-mentioned local video data buffer is used to store the video data in the local playback device, and the local audio data is buffered. The area is used to store the audio data in the local playback device, the external video data buffer is used to store the external video data of the external playback device transmitted through the HDMI data cable, and the external audio data buffer is used to store the external audio data transmitted through the HDMI data cable The external audio data of the external playback device. Of course, the local audio data buffer can also be used to store the external audio data of the external playback device transmitted through the HDMI data cable, and the local video data buffer can be used to store the external video data of the external playback device transmitted through the HDMI data cable . The storage areas of the above-mentioned local audio and video data and external audio and video data are determined by personal preferences, and are not limited in this embodiment of the present invention.

205. If the playback mode selected by the user is a mixed playback mode, the local playback device receives the external audio and video data sent by the external playback device through the HDMI cable.

In the embodiment of the present invention, the specific process for the local playback device to obtain the audio and video data of the external playback device is: firstly establish a buffer area through step 204, and then read the information content carried by the TMDS clock channel through the interface provided by the HDMI driver , consisting of 10-bit data in total, analyze the content of the 10-bit data, and determine the data type currently being transmitted by the other three data channels of TMDS; through the interface provided by the HDMI driver, read the three TMDS data channels in sequence ( Each channel consists of 10 bits of data) corresponding to the data receiving buffer.

206. The local playback device buffers the external video data and external audio data included in the external audio and video data into the external video data buffer and the external audio data buffer respectively, and buffers the local video data included in the local audio and video data with the local Audio data is buffered into local video data buffer and local audio data buffer respectively.

In the embodiment of the present invention, here, the data in the three TMDS data channels obtained in step 205 are respectively stored in corresponding buffer areas according to types.

207. The local playback device plays the local video data included in the local audio and video data and the external video data included in the external audio and video data simultaneously through different preset windows, and, according to the audio distribution method corresponding to the mixed playback method, the local The local audio data included in the audio and video data and the external audio data included in the external audio and video data are split and played simultaneously.

In the embodiment of the present invention, the above-mentioned window is based on the display window layout mode selected by the user, and the position, width and height of the window during conversion into local playback and external playback are calculated through calculation, and the result is represented by the number of pixels. Let me illustrate with an example. For example, when a user selects an external playback device and a local playback device for mixed playback, the size of the display window is divided equally. According to the selection result, firstly, the width and height parameters of the display buffer of the local playback device are obtained, respectively using Wd, Hd means, then, determine the display window coordinates of the two playback devices by the following calculation method: X _sl =0; Y _sl =0; W _sl =W _d /2; H _sl =H _d /2; X _se =W _d /2; Y _se =H _d /2; W _se =W _d /2; H _se =H _d /2. Wherein, the local playback device displays window coordinates, represented by X _sl , Y _sl , W _sl , H _sl , and the external playback device displays window coordinates, represented by X _se , Y _se , W _se , H _se .

Now take method 1 of the mixed playback mode as an example to explain in detail. According to the window layout mode selected by the user above, set the window position, width and height occupied by the local playback device when playing the program, and use X _sl , Y _sl , W _sl , H _sl , and the window position, width and height occupied by the external playback device when playing the program, respectively expressed by X _se , Y _se , W _se , H _se , (these setting parameters have been converted into pixel-based unit); and obtain the actual width and height parameters of the film source being played by the local playback device, represented by W _rl and H _rl , and the actual resolution parameters of the film source played by the external playback device, represented by W _re and H _re Obtain the resolution parameters of the display buffer area of the local playback device at the same time, represented by W _d , H _d ; According to these parameters, by calculation, obtain the local playback device and the external playback device when the local playback device realizes playing the program at the same time, its image Aspect compression ratio value. The image width and height compression ratio when played by the local playback device are represented by K _wl and K _hl , the calculation method is: K _wl = W _sl /W _rl , K _hl = H _sl /H _rl , the external playback device outputs to the local playback The image width-to-height compression ratio during device playback is represented by K _we and K _he , and the calculation method is: K _we =W _se /W _re , K _he =H _se /H _re .

Using the above obtained width-height compression ratio as an input parameter, call the image compression interface in the local playback system, and perform image compression processing on the data in the local video data buffer area and the external video data buffer area respectively, and the obtained local playback device The video image compression data is filled into the corresponding position and area of the video display buffer area of the local playback device according to the playback window parameters X _sl , Y _sl , W _sl , H _sl set by the user, and the obtained video of the external playback device The image compression data is filled into the corresponding position and area of the video display buffer area of the local playback device according to the playback window parameters X _se , Y _se , W _se , and H _se set by the user. The local playback system reads the information of each pixel in the video display buffer area, converts it into the data format defined by the HDMI interface, and outputs it to the TV screen through the HDMI data cable, thus realizing the video mixing of two or more playback devices output effect. Read the content of the external audio data buffer area, according to the data format required by the Bluetooth protocol, after grouping the data, call the Bluetooth driver interface, and send the audio data through the Bluetooth device, so as to realize the program sound played by the external playback device, to the user via bluetooth.

By implementing the method described in FIG. 2 , the user can switch between playback devices without manually plugging and unplugging HDMI cables frequently, thereby improving the switching efficiency between playback devices and avoiding damage to the HDMI interface.

Please refer to FIG. 3 . FIG. 3 is a schematic flowchart of a method in which a local controller controls a playback operation in an audio and video playback method disclosed in an embodiment of the present invention. The premise of completing the method shown in Figure 3 is that the playback method of audio and video shown in Figure 2 can be realized, as shown in Figure 3, including the following steps:

301. The local playback device receives a playback control instruction input by a user through a local controller.

302. Whether the input focus of the playback control instruction is located in the window used by the local playback device to play external video data.

As an optional implementation manner, if the focus of the playback control instruction input by the user through the local controller is on the window of the local playback device for playing external video data, then step 303 is performed; otherwise, step 306 is performed.

303. Based on the physical key value of the local controller included in the playback control instruction, identify the physical key associated with the local remote controller from the mapping table of physical key values and logical key values of the local controller stored in the local playback device. The logical key value corresponding to the value.

In the embodiment of the present invention, the definition and processing method of the user key inside the local playback device module is as follows: for each control key, define a user logical key and physical key, wherein the logical key is carried out to the application function module The transmitted physical key value is the unique infrared information code of each button on the controller, which is sent to the receiving device through the controller driver module. The local playback device receives the physical key value of the button passed in by its built-in transmitter module when the user operates the controller, and converts the physical key value into a logical key value. By converting the physical key value of each button into a corresponding logical key value, The local playback device establishes and stores the mapping table of the physical key value and the logical key value of the local controller, so as long as the physical key value of the local controller is received, the corresponding logical key value can be identified through the mapping table.

304. From the relationship mapping table of the logical key value of the local controller and the physical key value of the external controller stored in the local playback device, identify the external controller corresponding to the logical key value corresponding to the physical key value of the local remote controller. The physical key value of the controller.

In the embodiment of the present invention, the local playback device presents a learning button image layout including commonly used functions of the controller through the human-computer interaction interface, and the names and positions of the buttons on the image are consistent with the actual controller used. Each key-value icon in the image display area can be moved and selected through the local controller. When the user operates the local controller dedicated to the local playback device to select a key (such as the up arrow key), the screen prompts The user operates the button on the corresponding position on the external remote control configured by the external playback device. When the user clicks the upward direction key on the external controller, the infrared receiving module in the local playback device can capture the physical key emitted by it. value, the physical keys of the external controller and the user logic key values of the local controller are formed into a mapping table, and stored in the local playback device. When the local playback device detects that the user input focus is in the window where the local playback device is used to play external video data, and sends a key request to manipulate the external playback device, the key request can be identified by calling the stored key-value mapping table The physical key value of the corresponding external controller.

305. The local playback device transmits the physical key value of the external controller to the external playback device, so as to control the external playback device to perform corresponding playback control operations, where the playback control operations include volume increase, volume decrease, and channel change.

In the embodiment of the present invention, an infrared emitter device is installed on the local playback device, and the physical key value of the external controller identified in step 305 is transmitted to the external playback device through the infrared emitter, so as to realize the control by the local controller. The external playback device performs corresponding playback control operations, such as pausing, changing channels, increasing volume, decreasing volume, etc.

306. The local playback device directly responds to the physical key value of the local controller included in the playback control instruction to perform a corresponding playback control operation.

As an optional implementation, when the input focus of the playback control instruction described in step 302 is not within the window area used by the local playback device to play external video data, the local playback device receives the local The physical key value of the controller and make corresponding playback control operations, such as pause, change channels, volume up, volume down, etc.

By implementing the method described in Figure 3, the local playback device realizes the use of the local playback device to forward the physical key value that the external playback device can receive and identify by receiving the signal sent by the local controller. The operation control of the playback device greatly reduces the cumbersome actions of the user to frequently replace the controller, improves the user experience, and greatly improves the ease of use and convenience of the playback device.

Please refer to FIG. 4 . FIG. 4 is a schematic structural diagram of a communication connection disclosed by an embodiment of the present invention. In the communication connection architecture diagram shown in Figure 4, the local playback device can be a playback device with n+1 HDMI interfaces, and the n HDMI interfaces can communicate with n external playback devices at the same time, where n is greater than An integer equal to 1. As shown in Figure 4, the local playback device can establish a communication connection with the external playback device 1 through the HDMI data cable, and at the same time, the local playback device can also establish a communication connection with the external playback device 2 through the HDMI data cable, and so on. A communication connection can be established with the external playback device n through the HDMI data cable; the display device is also connected with the local playback device through the HDMI data cable. In the communication connection architecture diagram shown in Figure 4, the local playback device, the external playback device and the display device all have HDMI interfaces, so the local playback device can establish a communication connection with one or more external playback devices through the HDMI data cable at the same time, Thus, the audio and video data of the external playback device is transmitted to the local playback device through the HDMI data cable; and the local playback device also establishes a connection and communication with one or more display devices through the HDMI data cable, so that the audio and video data to be played by the local playback device Displayed through the HDMI data cable.

The above-mentioned local playback device and external playback device can be any device with playback and storage functions, such as: set-top box, DVD player, tablet computer, e-reader, video game console, digital audio, personal computer (Personal Computer, PC), Laptops, car equipment, Internet TV and other devices with HDMI interface.

By implementing the architecture described in Figure 4, users can switch between playback devices without manually plugging and unplugging HDMI cables frequently, thereby improving the switching efficiency between playback devices and avoiding damage to the HDMI interface.

Please refer to FIG. 5 . FIG. 5 is a schematic structural diagram of an audio and video playback device disclosed in an embodiment of the present invention. The audio and video playback device described in FIG. 5 is connected and communicated with an external playback device through an HDMI data cable. As shown in Figure 5, the playback device includes:

The first unit 501 is configured to receive a playback mode setting instruction input by a user, and the playback mode setting instruction includes a playback mode setting parameter.

In the embodiment of the present invention, after an external playback device is connected to the playback device through an HDMI data cable, the user inputs a playback mode setting instruction to the playback device by operating the playback device, and the user can directly operate the specified button on the playback device, Instructions can also be input through a dedicated controller configured on the playback device.

The second unit 502 is used to set the playback mode of audio and video according to the playback mode setting parameters received by the first unit 501, and the playback mode includes a local playback device independent playback mode, an external playback device independent playback mode, and a mixed playback mode. play method.

As an optional implementation, the independent playback mode of the local playback device means that the playback device only selects the audio and video of the playback device as an output source for independent playback, and cuts off the input channel of the external playback device.

As an optional implementation, the independent playback mode of the external playback device means that the playback device only selects the audio and video of the external playback device imported through the HDMI data cable as the output source for independent playback, and closes the playback device itself signal output.

As an optional implementation, the mixed playback mode includes mode 1, the playback device simultaneously selects its own video and the video of the external playback device imported through the HDMI data cable to mix and play simultaneously, and the playback device selects Its own audio is directly played, and the audio of the external playback device imported through the HDMI data cable is transmitted and played by the Bluetooth driver interface integrated in the playback device. or,

Method 2: The playback device simultaneously selects its own video and the video of the external playback device imported through the HDMI data cable for mixed and simultaneous playback, and the playback device selects the audio of the external playback device imported through the HDMI data cable for direct playback , and at the same time use the Bluetooth driver interface integrated in the playback device to transmit and play its own audio.

In one embodiment, the unit sets the playback mode of the playback device according to the playback mode setting parameters input by the user. For example, if the parameter input by the user is 1, the corresponding playback mode of the background program setting is the independent playback mode of the local playback device; if the parameter input by the user is 2, the corresponding playback mode of the background program setting is the independent playback mode of the external playback device, and the user input If the parameter is 3, then the background program sets the corresponding playback mode as mode 1 in the hybrid playback mode, and if the parameter input by the user is 4, then the background program sets the corresponding playback mode as mode 2 in the hybrid playback mode. There are many other situations of playing modes corresponding to the playing mode setting parameters input by the user, which are not limited in this embodiment of the present invention.

The third unit 503 is configured to receive the playback mode selected by the user.

In the embodiment of the present invention, this unit receives the user's input operation, and the user can also choose to directly operate the specified button on the playback device, or select the dedicated controller configured by the playback device to input, and the playback device will input according to the user's input. Parameters, find the playback mode that has been set by the second unit 502 in the background program and corresponds to the parameters input by the user.

The fourth unit 504 is configured to receive the external audio and video sent by the external playback device through the HDMI cable when the playback mode selected by the user received by the third unit 503 is the mixed playback mode data.

In the embodiment of the present invention, when the playback mode corresponding to the parameter input by the user in the third unit 503 is a mixed playback mode, this unit receives the external audio and video data sent by the external playback device in real time through the HDMI cable, wherein the mixed playback The mode may be mode 1 in the hybrid playback mode, or mode 2 in the hybrid playback mode.

The fifth unit 505 is configured to simultaneously play the local video data included in the local audio and video data and the external video data included in the external audio and video data received by the fourth unit 504 through different preset windows; and, The local audio data included in the local audio and video data and the external audio data included in the external audio and video data received by the fourth unit 504 are split and played simultaneously according to the audio splitting manner corresponding to the mixed playback manner.

In the embodiment of the present invention, this unit plays the local video data included in the local audio and video data and the external video data included in the external audio and video data respectively through different preset windows, including:

Obtaining the window setting parameters input by the user, and respectively setting the positions and sizes of the windows for playing the local video data and the external video data according to the window setting parameters;

Compressing the local video data to obtain compressed local compressed video data suitable for the size of the window used to play the local video data;

Compressing the external video data to obtain compressed external compressed video data suitable for the size of the window for playing the external video data;

Playing the local compressed video data and the external compressed video data simultaneously through the window for playing the local video data and the window for playing the external video data respectively.

As an optional implementation manner, when the mixed playback mode is Mode 1 in the mixed playback mode, the local audio data included in the local audio and video data is included in the audio splitting mode corresponding to the mixed playback mode and the external audio data included in the external audio and video data are shunted and played simultaneously, including:

The unit plays the local audio data through the playback device, and simultaneously plays the external audio data through the bluetooth device.

As an optional implementation manner, when the mixed playback mode is Mode 2 in the mixed playback mode, the local audio included in the local audio and video data is The data and the external audio data included in the external audio and video data are shunted and played simultaneously, including:

The unit plays the external audio data through the playback device, and at the same time plays the local audio data through the bluetooth device.

By implementing the playback device described in FIG. 5 , the user can switch between playback devices without manually plugging and unplugging HDMI cables frequently, thereby improving the switching efficiency between playback devices and avoiding damage to the HDMI interface.

Please refer to FIG. 6 . FIG. 6 is a schematic structural diagram of another audio and video playback device disclosed in an embodiment of the present invention. The device embodiment of the present invention can be used to execute the methods realized by the method embodiments 1 to 3 of the present invention. For the convenience of description, only the parts related to the embodiment of the present invention are shown. For specific technical details not disclosed, please refer to the embodiment of the present invention. One, embodiment two and embodiment three. Wherein, the audio and video playback device shown in FIG. 6 is obtained by optimizing the audio and video playback device shown in FIG. 5 . In the playback device of audio and video shown in Figure 6, in addition to comprising the unit that the playback device of audio and video shown in Figure 5 comprises, can also include:

The sixth unit 506 is used to establish a local video data buffer, a local audio data buffer, and an external video data buffer before the fourth unit 504 receives the external audio and video data sent by the external playback device through the HDMI cable. buffer as well as external audio data buffers.

As an optional implementation, it is feasible for this unit to be placed before the first unit 501 or before the second unit 502 or before the third unit 503, and the local video data buffer established above is used to store its own video data in the playback device. Video data, the local audio data buffer is used to store the audio data in the playback device itself, the external video data buffer is used to store the external video data of the external playback device transmitted through the HDMI data cable, and the external audio data buffer is used It is used to store the external audio data of the external playback device transmitted through the HDMI data cable. Of course, the local audio data buffer can also be used to store the external audio data of the external playback device transmitted through the HDMI data cable, and the local video data buffer can be used to store the external video data of the external playback device transmitted through the HDMI data cable . The storage areas of the above-mentioned local audio and video data and external audio and video data are determined by personal preferences, and are not limited in this embodiment of the present invention.

The seventh unit 507 is configured to, after the fourth unit 504 receives the external audio and video data sent by the external playback device through the HDMI cable, convert the external video data and external audio data included in the external audio and video data to respectively buffering the external video data buffer and the external audio data buffer established by the sixth unit 506; and buffering the local video data and local audio data included in the local audio and video data into the The sixth unit 506 establishes the local video data buffer and the local audio data buffer.

The eighth unit 508 is configured to receive a playback control instruction input by the user through the local controller, and if the input focus of the playback control instruction is located in the window for playing the external video data, then use the playback control instruction According to the physical key value of the local remote controller included in the instruction, from the stored mapping table of physical key value and logical key value of the local controller, identify the key corresponding to the physical key value of the local remote controller a logical key value, and identifying the logical key value corresponding to the physical key value of the local remote controller from the stored relationship mapping table between the logical key value of the local controller and the physical key value of the external controller The corresponding physical key value of the external controller.

The ninth unit 509 is configured to transmit the physical key value of the external controller identified by the eighth unit to the external playback device, so as to control the external playback device to perform a corresponding playback control operation, the Playback control operations include volume up, volume down, and channel change.

In the embodiment of the present invention, this unit is an infrared emitting head device installed on the playback device, through which the physical key value of the external controller identified in the eighth unit 508 is transmitted to the external playback device, In order to use the local controller to control the external playback device to make corresponding playback control operations, such as pause, change channel, volume increase, volume decrease and other operations.

The above-mentioned playback device can be any device with playback and storage functions, such as: set-top box, DVD player, tablet computer, e-reader, video game console, personal computer (Personal Computer, PC), notebook computer, vehicle-mounted equipment, Internet TV and other devices with HDMI interface.

By implementing the playback device described in FIG. 6 , users can switch between playback devices without manually plugging and unplugging HDMI cables frequently, thereby improving the switching efficiency between playback devices and avoiding damage to the HDMI interface. In addition, by receiving the signal sent by the local controller, the playback device realizes the use of the local playback device to forward the physical key value that the external playback device can receive and recognize, and indirectly realizes the operation control of the external playback device through the local controller, thereby It greatly reduces the cumbersome actions of the user to frequently replace the controller, improves the user experience, and greatly improves the ease of use and convenience of the playback device.

Please refer to FIG. 7 . FIG. 7 is a schematic structural diagram of another audio and video playback device disclosed in an embodiment of the present invention. The device embodiment of the present invention can be used to execute the methods realized by the method embodiments 1 to 3 of the present invention. For the convenience of description, only the parts related to the embodiment of the present invention are shown. For specific technical details not disclosed, please refer to the embodiment of the present invention. One, embodiment two and embodiment three.

The playback device can be an OTT playback device, a DVB playback device, a DVD player, a personal computer, a vehicle-mounted device, etc., which have an HDMI interface. Figure 7 shows a part of an audio and video playback device disclosed in an embodiment of the present invention Schematic diagram of the structure. Take the OTT playback device as an example below, as shown in Figure 7, the playback device includes a processor 700, an RF (Radio Frequency, radio frequency) module 701, a power board 702, a Wifi module 703, an HDMI interface 704, a memory 705, a video module 706, Audio module 707, Bluetooth driver module 708, infrared receiving module 709, infrared emitting module 710 and other components. Those skilled in the art can understand that the structure of the OTT playback device shown in FIG. Part placement.

The following is a specific introduction to each component of the OTT playback device in conjunction with Figure 7:

The processor 700 is the control center of the OTT playback device, which integrates modules such as a CPU, a decoder, a demultiplexer, and a graphics processor, and uses various interfaces and lines to connect various parts of the entire OTT playback device. By running software programs or module to perform various functions of the OTT playback device and process data.

The RF module 701 can be used to receive and send signals during audio and video playback, and input the received radio frequency signals into the processor 700 for demodulation processing. Generally, the RF module includes, but is not limited to, an antenna, at least one amplifier, a transceiver, a coupler, an LNA (Low Noise Amplifier, low noise amplifier), a duplexer, and the like.

The power board 702 is used to supply power to each module of the OTT playback device, and the power supply can be logically connected to the processor 700 through the power management system, so as to realize functions such as management of charging, discharging, and power consumption management through the power management system.

The Wifi module 703 can be connected to the wireless network in the home, so that the user can browse the web, share resources, shop online and access streaming media, etc. Although FIG. 7 shows the Wifi module 703, it can be understood that it does not belong to the audio system. The necessary configuration of the video playback device can be completely omitted according to needs within the scope of not changing the essence of the invention.

The HDMI interface 704 is used for connecting and communicating the playback device with an external playback device, and for connecting and communicating with the playback device and a display device, so as to transmit audio and video data.

The memory 705 can be used to store software programs and modules, and the processor 700 executes various functional applications and data processing of the OTT playback device by running the software programs and modules stored in the memory 705 . The memory 705 can mainly include a storage program area and a storage data area, and the storage program area can store an operating system, at least one application program required by a function (such as a playback mode setting function, a sound playback function, and a video playback function, etc.); the storage data area It can be used to store the audio and video data of the playback device itself and the external audio and video data transmitted from the external playback device, and deliver the stored data to the processor 700 for processing.

The video module 706 is used to perform operations such as filtering on the video, and output it to a display device through a video output port for playback and display.

The audio module 707 is used to perform operations such as denoising and amplifying audio, and output it through an audio output device.

The Bluetooth driver module 708 is used to output and play the audio data of the playback device or the audio data of the external device through the Bluetooth device.

The infrared receiving module 709 is used to receive the unique infrared information code of each key transmitted by the special remote control of the playback device operated by the user, and send it to the processor 700 for processing.

The infrared transmitting module 710 is used to transmit the physical key value of the remote controller of the external playback device corresponding to the logical key value corresponding to the physical key value emitted by the dedicated remote controller of the playback device to the external playback device, so the external playback device can be based on The key-value information completes the corresponding playback operation.

In the embodiment of the present invention, the playback device receives a playback mode setting instruction input by the user, the playback mode setting instruction includes a playback mode setting parameter, and the audio and video playback mode is set according to the playback mode setting parameter, and the playback mode Including the independent playback mode of the local playback device, the independent playback mode of the external playback device and the mixed playback mode, and receiving the playback mode selected by the user; if the playback mode selected by the user is the mixed playback mode, the playback device passes The HDMI cable receives the external audio and video data sent by the external playback device, and simultaneously plays the local video data included in the local audio and video data and the external video data included in the external audio and video data respectively through different preset windows , and, according to the audio distribution method corresponding to the mixed playback method, the local audio data included in the local audio and video data and the external audio data included in the external audio and video data are distributed and played simultaneously. Therefore, the user can switch between playback devices without frequently manually plugging and unplugging HDMI cables, thereby improving the switching efficiency between playback devices and avoiding damage to the HDMI interface. In addition, by receiving the signal sent by the local controller, the playback device realizes the use of the local playback device to forward the physical key value that the external playback device can receive and recognize, and indirectly realizes the operation control of the external playback device through the local controller, thereby It greatly reduces the cumbersome actions of the user to frequently replace the controller, improves the user experience, and greatly improves the ease of use and convenience of the playback device.

Those of ordinary skill in the art can understand that all or part of the processes in the methods of the above embodiments can be implemented through computer programs to instruct related hardware, and the programs can be stored in a computer-readable storage medium. During execution, it may include the processes of the embodiments of the above-mentioned methods. Wherein, the storage medium may be a magnetic disk, an optical disk, a read-only memory (Read-Only Memory, ROM) or a random access memory (Random Access Memory, RAM for short).

The above disclosures are only preferred embodiments of the present invention, and certainly cannot limit the scope of rights of the present invention. Therefore, equivalent changes made according to the claims of the present invention still fall within the scope of the present invention.

Claims (12)

1. A method for playing audio and video is characterized in that in the method, a local playing device and an external playing device are in communication connection through an HDMI (high-definition multimedia interface) line, and the method comprises the following steps:

the local playing equipment receives a playing mode setting instruction input by a user, wherein the playing mode setting instruction comprises playing mode setting parameters;

the local playing device sets the playing mode of the audio and video according to the playing mode setting parameter, wherein the playing mode comprises a local playing device independent playing mode, an external playing device independent playing mode and a mixed playing mode;

the local playing equipment receives the playing mode selected by the user;

if the playing mode selected by the user is the mixed playing mode, the local playing device receives external audio and video data sent by the external playing device through the HDMI line;

the local playing device simultaneously plays local video data included in local audio and video data and external video data included in the external audio and video data through different preset windows respectively;

and the local playing device divides local audio data included by the local audio and video data and external audio data included by the external audio and video data according to an audio dividing mode corresponding to the mixed playing mode and plays the local audio data and the external audio and video data simultaneously, wherein the local playing device plays the local audio data through the local playing device and plays the external audio data through the Bluetooth device, or the local playing device plays the external audio data through the local playing device and plays the local audio data through the Bluetooth device.

2. The method as claimed in claim 1, wherein before the local playback device receives external audio/video data sent by the external playback device via the HDMI cable, the method further comprises:

the local playing device respectively establishes a local video data buffer area, a local audio data buffer area, an external video data buffer area and an external audio data buffer area;

after the local playing device receives the external audio and video data sent by the external playing device through the HDMI cable, the method further includes:

the local playing device caches external video data and external audio data included in the external audio and video data to the external video data buffer area and the external audio data buffer area respectively;

and the local playing device caches local video data and local audio data included in the local audio and video data to the local video data buffer area and the local audio data buffer area respectively.

3. The method of claim 1, wherein the method further comprises:

and if the playing mode selected by the user is the independent playing mode of the local playing equipment, only the local audio and video data is selected to be independently played.

4. The method of claim 1, wherein the method further comprises:

and if the playing mode selected by the user is the independent playing mode of the external playing equipment, only the external audio and video data is selected to be independently played.

5. The method of claim 1, wherein the local playing device simultaneously plays the local video data included in the local audio/video data and the external video data included in the external audio/video data through different preset windows respectively, and the method includes:

the local playing equipment acquires window setting parameters input by a user, and respectively sets the position and the size of a window for playing the local video data and the external video data according to the window setting parameters;

the local playing device compresses the local video data to obtain compressed local compressed video data which is suitable for the size of the window for playing the local video data;

the local playing device compresses the external video data to obtain compressed external compressed video data which is suitable for the size of the window for playing the external video data;

and the local playing equipment simultaneously plays the local compressed video data and the external compressed video data through the window for playing the local video data and the window for playing the external video data respectively.

6. The method of any one of claims 1 to 5, further comprising:

the local playing device receives a playing control instruction input by a user through a local controller, if an input focus of the playing control instruction is located in the window for playing the external video data, a logical key value corresponding to the physical key value of the local remote controller is identified from a stored mapping table of the physical key value and the logical key value of the local controller according to the physical key value of the local controller included in the playing control instruction, and a physical key value of the external controller corresponding to the logical key value corresponding to the physical key value of the local remote controller is identified from a stored relational mapping table of the logical key value of the local controller and the physical key value of the external controller;

the local playing device transmits the physical key value of the external controller to the external playing device so as to control the external playing device to make corresponding playing control operations, wherein the playing control operations comprise volume enhancement, volume reduction and channel change.

7. The utility model provides a playback equipment of audio frequency and video which characterized in that, through HDMI line communication connection between playback equipment and the external playback equipment, playback equipment includes:

the device comprises a first unit, a second unit and a third unit, wherein the first unit is used for receiving a playing mode setting instruction input by a user, and the playing mode setting instruction comprises playing mode setting parameters;

the second unit is used for setting the playing mode of the audio and video according to the playing mode setting parameter received by the first unit, wherein the playing mode comprises a local playing device independent playing mode, an external playing device independent playing mode and a mixed playing mode;

a third unit, configured to receive the play mode selected by the user;

a fourth unit, configured to receive, through the HDMI cable, external audio/video data sent by the external playback device when the playback mode selected by the user and received by the third unit is the hybrid playback mode;

the fifth unit is used for simultaneously playing local video data included in the local audio and video data and external video data included in the external audio and video data received by the fourth unit through different preset windows respectively; according to an audio distribution mode corresponding to the mixed playing mode, local audio data included in the local audio and video data and external audio data included in the external audio and video data received by the fourth unit are distributed and played simultaneously;

the fifth unit is specifically configured to play the local audio data through the playback device, and play the external audio data through the bluetooth device;

the fifth unit is specifically configured to play the external audio data through the playback device, and play the local audio data through the bluetooth device.

8. The playback device of claim 7, wherein the playback device further comprises:

a sixth unit, configured to establish a local video data buffer, a local audio data buffer, an external video data buffer, and an external audio data buffer before the fourth unit receives, through the HDMI line, external audio and video data sent by the external playback device;

a seventh unit, configured to buffer, after the fourth unit receives, through the HDMI line, external audio and video data sent by the external playback device, external video data and external audio data included in the external audio and video data to the external video data buffer and the external audio data buffer established by the sixth unit, respectively; and caching local video data and local audio data included in the local audio and video data into the local video data buffer area and the local audio data buffer area established by the sixth unit respectively.

9. The playback device of claim 7, wherein if the playback mode received by the third unit and selected by the user is the local playback device independent playback mode, the fifth unit is further configured to select only the local audio/video data for independent playback.

10. The playback device of claim 7, wherein if the playback mode received by the third unit and selected by the user is the external playback device independent playback mode, the fifth unit is further configured to select only the external audio/video data for independent playback.

11. The playback device of claim 7, wherein the specific manner in which the fifth unit simultaneously plays the local video data included in the local audio/video data and the external video data included in the external audio/video data received by the fourth unit through the preset different windows respectively is as follows:

the fifth unit is specifically configured to acquire a window setting parameter input by a user, and set a position and a size of a window for playing the local video data and the external video data according to the window setting parameter; compressing the local video data to obtain compressed local compressed video data which is suitable for the size of the window for playing the local video data; compressing the external video data to obtain compressed external compressed video data suitable for the size of the window for playing the external video data; and simultaneously playing the local compressed video data and the external compressed video data through the window for playing the local video data and the window for playing the external video data respectively.

12. The playback device according to any one of claims 7 to 11, wherein the playback device further comprises:

an eighth unit, configured to receive a play control instruction input by a user through a local controller, if an input focus of the play control instruction is located in the window for playing the external video data, identify, according to a physical key value of the local remote controller included in the play control instruction, a logical key value corresponding to the physical key value of the local remote controller from a stored mapping table of the physical key value and the logical key value of the local controller, and identify, from a stored mapping table of a relationship between the logical key value of the local controller and the physical key value of the external controller, a physical key value of the external controller corresponding to the logical key value corresponding to the physical key value of the local remote controller;

a ninth unit, configured to transmit the physical key value of the external controller identified by the eighth unit to the external playback device, so as to control the external playback device to perform a corresponding playback control operation, where the playback control operation includes volume increase, volume decrease, and channel change.