CN106851134B - Method, device and system for transmitting image data - Google Patents
Method, device and system for transmitting image data Download PDFInfo
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- CN106851134B CN106851134B CN201710081273.7A CN201710081273A CN106851134B CN 106851134 B CN106851134 B CN 106851134B CN 201710081273 A CN201710081273 A CN 201710081273A CN 106851134 B CN106851134 B CN 106851134B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N5/00—Details of television systems
- H04N5/222—Studio circuitry; Studio devices; Studio equipment
- H04N5/262—Studio circuits, e.g. for mixing, switching-over, change of character of image, other special effects ; Cameras specially adapted for the electronic generation of special effects
- H04N5/268—Signal distribution or switching
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
- H04W4/80—Services using short range communication, e.g. near-field communication [NFC], radio-frequency identification [RFID] or low energy communication
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W76/00—Connection management
- H04W76/10—Connection setup
Abstract
The invention discloses a method, a device and a system for transmitting image data, and belongs to the technical field of communication. The method is used in a transmitting end, the transmitting end comprises a mobile terminal, and the method comprises the following steps: when an image data transmission instruction is received, acquiring a currently displayed image to obtain image data to be transmitted, establishing a one-way transmission WiFi connection with a receiving end based on a wireless fidelity WiFi network, wherein the receiving end comprises a display device with a processing function, and transmitting the image data to the receiving end based on the one-way transmission WiFi connection. The invention reduces the cost of transmitting image data.
Description
Technical Field
The present invention relates to the field of communications technologies, and in particular, to a method, an apparatus, and a system for transmitting image data.
Background
With the development of communication technology, especially the rise of wireless transmission technology, great convenience is brought to the life of users. When a user uses a mobile terminal with a small screen such as a mobile phone, in order to view the content displayed in the screen, it is generally necessary to project an image displayed in the current screen of the mobile terminal to screens of other relatively fixed terminals by using a wireless transmission technology, so as to display the image in the other terminals.
For convenience of description, a mobile terminal with a small screen such as a mobile phone is referred to as a transmitting end, and other terminals are referred to as receiving ends. In the related art, as shown in fig. 1, a chip 110 with a WFD (wireless Display) function needs to be disposed at both the transmitting end 11 and the receiving end 12, that is, both the transmitting end 11 and the receiving end 12 are mobile terminals with WFD functions. The sending end 11 may establish a connection with the receiving end 12 through the chip 110 having the WFD function, acquire the currently displayed image to obtain image data to be sent, and send the image data to the receiving end 12 through the established connection. When the receiving end 12 receives the image data through the connection, an image can be displayed simultaneously with the transmitting end 11 based on the image data.
However, only when the sending end and the receiving end are both provided with the WFD chips, the sending end can send the image data to the receiving end, so that the image displayed on the current screen is projected to the screen of the receiving end, and the cost for transmitting the image data is high.
Disclosure of Invention
In order to reduce the cost of transmitting image data, embodiments of the present invention provide a method, an apparatus, and a system for transmitting image data. The technical scheme is as follows:
in a first aspect, a method for transmitting image data is provided, where the method is used in a transmitting end, the transmitting end includes a mobile terminal, and the method includes:
when an image data transmission instruction is received, acquiring a currently displayed image to obtain image data to be transmitted;
establishing a WiFi (Wireless Fidelity) connection of unidirectional transmission with a receiving end based on a WiFi network, wherein the receiving end comprises a display device with a processing function;
and sending the image data to the receiving end based on the WiFi connection of the unidirectional transmission.
Optionally, the establishing a WiFi connection with a receiving end based on a unidirectional transmission between the WiFi network and the receiving end includes:
sending a connection request to the receiving end based on the WiFi network, wherein the connection request is used for indicating the WiFi connection which is established with the receiving end in the unidirectional transmission mode;
and when receiving a connection response returned by the receiving end, determining that the WiFi connection of the unidirectional transmission between the receiving end and the WiFi connection is successfully established.
Optionally, before the sending the image data to the receiving end based on the WiFi connection of the unidirectional transmission, the method further includes:
converting the image data into image data in a preset format;
packaging the converted image data into a data packet in an HDMI (High Definition multimedia interface) format, and packaging the data packet in the HDMI format into a data packet in a WiFi format;
correspondingly, the sending the image data to the receiving end based on the WiFi connection of the unidirectional transmission includes:
and based on the WiFi connection of the unidirectional transmission, sending the data packet in the WiFi format to the receiving end so as to send the converted image data to the receiving end.
Optionally, the preset format includes: the scan format is 1080P, the frame rate is 60, and the color space is YCbCr 422.
In a second aspect, an apparatus for transmitting image data is provided, where the apparatus is used in a transmitting end, the transmitting end includes a mobile terminal, and the apparatus includes:
the acquisition module is used for acquiring a currently displayed image to obtain image data to be transmitted when an image data transmission instruction is received;
the first wireless fidelity WiFi module is used for establishing a WiFi connection with a receiving end in one-way transmission based on a WiFi network, and the receiving end comprises display equipment with a processing function;
the first wireless fidelity WiFi module is used for sending the image data to the receiving end based on the WiFi connection of the one-way transmission.
Optionally, the first wireless fidelity WiFi module comprises:
the first sending submodule is used for sending a connection request to the receiving end based on the WiFi network, and the connection request is used for indicating the establishment of the WiFi connection of the unidirectional transmission with the receiving end;
and the determining submodule is used for determining that the WiFi connection of the unidirectional transmission between the receiving terminal and the determining submodule is successfully established when the connection response returned by the receiving terminal is received.
Optionally, the apparatus further comprises:
the conversion module is used for converting the image data into image data in a preset format;
the encapsulation module is used for encapsulating the converted image data into a data packet in a high-definition multimedia interface (HDMI) format and encapsulating the data packet in the HDMI format into a data packet in a WiFi format;
correspondingly, the first wireless fidelity WiFi module is further configured to send the data packet in the WiFi format to the receiving end based on the WiFi connection of the unidirectional transmission, so as to send the converted image data to the receiving end.
Optionally, the preset format includes: the scan format is 1080P, the frame rate is 60, and the color space is YCbCr 422.
In a third aspect, a system for transmitting image data is provided, where the system includes a sending end and a receiving end, the sending end includes a mobile terminal, the receiving end includes a display device with a processing function, the sending end includes an acquisition module and a first WiFi module, and the receiving end includes an image processing module and an image display module;
the acquisition module is used for acquiring a currently displayed image to obtain image data to be transmitted when an image data transmission instruction is received;
the first wireless fidelity WiFi module is used for establishing a WiFi connection with a receiving end in one-way transmission based on a WiFi network and sending the image data to the receiving end based on the WiFi connection in one-way transmission;
the image processing module is used for receiving the image data and processing the image data;
and the image display module is used for displaying images based on the processed image data.
Optionally, the image data received by the image processing module is obtained by the first WiFi module encapsulating image data in a preset format into a data packet in an HDMI format, and encapsulating the data packet in the HDMI format into a data packet in a WiFi format;
the image processing module comprises a Digital Signal Processor (DSP), a second WiFi sub-module and an HDMI sub-module;
the second WiFi sub-module is used for receiving the data packet in the WiFi format;
the DSP is used for de-encapsulating the data packet in the WiFi format to obtain the data packet in the HDMI format;
and the HDMI sub-module is used for sending the data packet in the HDMI format to the image display module.
The technical scheme provided by the embodiment of the invention has the beneficial effects that at least: in the embodiment of the invention, firstly, a sending end and a receiving end for sending the image data do not need to be provided with chips with WFD functions, the sending end can obtain the image data when receiving an image data transmission instruction, and establish WiFi connection with the receiving end based on a WiFi network, and the image data is sent to the receiving end through the WiFi connection, namely, an image displayed in a screen of the sending end can be projected to a screen of the receiving end directly through the WiFi chip, so that the cost for transmitting the image data is reduced. Secondly, because the WiFi connection is the WiFi connection of unidirectional transmission, the data such as control requests for keeping the WiFi connection are saved from being sent to the sending end by the receiving end through the WiFi connection, and the images displayed on the screen of the sending end are ensured to be projected to the screen of the receiving end directly through the WiFi chip, so that the cost for transmitting the image data is reduced, the time can be saved, the efficiency for sending the image data is improved, and the time delay for transmitting the image data is reduced.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
FIG. 1 is a diagram of a prior art system architecture for transferring image data;
FIG. 2 is a flow chart of a method for transmitting image data according to an embodiment of the present invention;
FIG. 3 is a flow chart of another method for transmitting image data according to an embodiment of the present invention;
fig. 4 is a block diagram of an apparatus for transmitting image data according to an embodiment of the present invention;
FIG. 5A is a diagram of a system architecture for transferring image data according to an embodiment of the present invention;
fig. 5B is a schematic structural diagram of an image processing module according to an embodiment of the present invention;
fig. 5C is a schematic structural diagram of a receiving end according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, embodiments of the present invention will be described in detail with reference to the accompanying drawings.
Fig. 2 is a flowchart of a method for transmitting image data according to an embodiment of the present invention, where the method is used in a sending end, where the sending end may be a mobile terminal, and referring to fig. 2, the method includes:
step 201: and when an image data transmission instruction is received, acquiring the currently displayed image to obtain the image data to be transmitted.
Step 202: the method comprises the steps of establishing a WiFi connection with a receiving end in one-way transmission based on a WiFi network, wherein the receiving end can be a display device with a processing function.
Step 203: and sending the image data to the receiving end based on the WiFi connection of the one-way transmission.
In the embodiment of the invention, firstly, a sending end and a receiving end for sending the image data do not need to be provided with chips with WFD functions, the sending end can obtain the image data when receiving an image data transmission instruction, and establish WiFi connection with the receiving end based on a WiFi network, and the image data is sent to the receiving end through the WiFi connection, namely, an image displayed in a screen of the sending end can be projected to a screen of the receiving end directly through the WiFi chip, so that the cost for transmitting the image data can be reduced. Secondly, because the WiFi connection is a one-way transmission WiFi connection, the receiving end can be prevented from sending data such as a control request for keeping the WiFi connection to the sending end through the WiFi connection, the image displayed on the screen of the sending end is ensured to be projected to the screen of the receiving end directly through the WiFi chip, the cost for transmitting the image data is reduced, the time can be saved, the efficiency for sending the image data is improved, and the time delay for transmitting the image data is reduced.
Fig. 3 is a flowchart of a method for transmitting image data according to an embodiment of the present invention, where the method is used in an interaction between a sending end and a receiving end, where the sending end is a mobile terminal, and the receiving end is a display device with a processing function. Referring to fig. 3, the method includes:
step 301: when the sending end receives an image data transmission instruction, the currently displayed image is obtained so as to obtain the image data to be transmitted.
When a user watches a movie and plays a game using a mobile terminal (particularly, a mobile terminal with a small screen such as a mobile phone, a tablet computer, and a smart watch), in order to enhance user experience, it is generally desirable to project an image currently displayed by the mobile terminal to a screen of another display device with a processing function (for example, a device with a large screen such as a computer and a smart tv).
The image data transmission instruction is used for instructing the sending end to project the image currently displayed in the screen to the screen of the receiving end, and the image data transmission instruction can be triggered by a user through executing preset operation, where the preset operation may be a click operation, a touch operation, a sliding operation, and the like, and certainly, in practical application, the preset operation may also be other operations.
It should be noted that the sending end may obtain the image data by acquiring, through a data processor, the currently displayed image from a Frame Buffer (FB) of the sending end. The data processor may be a Central Processing Unit (CPU).
Step 302: the sending end establishes a WiFi connection of unidirectional transmission with the receiving end based on a WiFi network.
In order to avoid the problem of high cost caused by arranging chips with WFD functions at the sending end and the receiving end, the image data can be directly transmitted through WiFi connection, namely the image data can be directly transmitted through a WiFi chip, so that the cost for transmitting the image data is reduced. In addition, since the receiving end does not need to send image data to the sending end, in order to ensure that the image displayed in the screen of the sending end is projected to the screen of the receiving end directly through the WiFi chip, the cost for transmitting the image data is reduced, meanwhile, the time delay for transmitting the image data can be reduced, and the real-time performance for projecting the image currently displayed in the screen of the sending end to the screen of the receiving end is improved, the WiFi connection can be a one-way transmission WiFi connection.
It should be noted that, when the WiFi connection is a unidirectional transmission WiFi connection, since the receiving end does not need to send data such as a control request for maintaining the WiFi connection to the sending end through the WiFi connection, the saved time can be used for transmitting the image data, that is, the efficiency of transmitting the image data is improved, and the delay of transmitting the image data is reduced.
The sending end can send a connection request to the receiving end based on the WiFi network, where the connection request is used to indicate that the WiFi connection of the unidirectional transmission is established with the receiving end, and when a connection response returned by the receiving end is received, it is determined that the WiFi connection of the unidirectional transmission between the sending end and the receiving end is successfully established. When the connection response returned by the receiving end is not received, the WiFi connection establishment failure of the one-way transmission between the receiving end and the user can be determined, and connection failure prompt information is displayed to prompt the user that the WiFi connection establishment failure of the one-way transmission between the user and the receiving end.
It should be noted that the sending end may display the connection failure prompt information in a window or pop-up window manner, and certainly, in practical applications, the sending end may also display the connection failure prompt information in other manners.
Further, in order to increase the total amount of image data transmitted per unit time, thereby further reducing the delay time for transmitting the image data, the WiFi connection for unidirectional transmission may be a 60GHz (gigahertz) WiFi connection. It should be noted that reference herein to a number, range of numbers, etc., can be made to float in its upper and lower extent (e.g., increased or decreased by 10%, 20%, etc.) unless it is theoretically clear that the number, range of numbers, etc., are unique.
Step 303: the sending end sends the image data to the receiving end based on the WiFi connection of the one-way transmission.
Therefore, the efficiency of transmitting the image data to the receiving end by the transmitting end can be improved through the WiFi connection of the unidirectional transmission, and therefore the transmitting end can efficiently transmit the image data to the receiving end in the form of a WiFi data packet based on the WiFi connection of the unidirectional transmission.
Further, as can be seen from the foregoing description, the sending end may be different types of mobile terminals such as a mobile phone, a tablet computer, or a smart watch, and data formats of image data obtained by different mobile terminals obtaining an image displayed on a screen may also be different, and since operations such as compressing, decompressing, and parsing of the image data are generally required in a process of sending the image data from the sending end to the receiving end and displaying the image data, when the data formats of the image data are different, time periods required for operations such as compressing, decompressing, and parsing of the image data are different, which may cause a problem of a large delay in sending the image data, and therefore, in order to further reduce the delay in sending the image data, the sending end may convert the image data into image data in a preset format, and based on the WiFi connection of unidirectional transmission, and sending the converted image data to the receiving end. That is, no matter what kind of data format's image data is acquired by the sending end, the sending end can convert the acquired image data into the data of the preset format, thereby ensuring that the image data of the preset format can be sent to the receiving end through the WiFi connection of the unidirectional transmission all the time, and the receiving end also only needs to receive one data format, namely the image data of the preset format.
In order to reduce the data amount of the image data while ensuring the quality of the projected image, thereby further reducing the delay of transmitting the image data, the preset format may include: the scan format is 1080P, the frame rate is 60, and the color space is YCbCr 422. Of course, in practical applications, the preset format may also be other formats, for example, the preset format may also include a scan format of 1080P, a frame rate of 30, and a color space of YCbCr 422.
Further, in order to facilitate the sending end to send the image data to the receiving end based on the WiFi connection of the unidirectional transmission, the sending end may encapsulate the image data into a data packet in an HDMI format, and encapsulate the data packet in the HDMI format into a data packet in a WiFi format, and then send the data packet in the WiFi format to the receiving end based on the WiFi connection of the unidirectional transmission, so as to send the image data to the receiving end.
Step 304: the receiving end receives the image data and displays an image based on the image data in a screen.
When the receiving end receives the image data, the image data can be processed, so that the image displayed on the screen of the receiving end and the image displayed on the screen of the transmitting end can be completely the same without considering the delay when the image display is performed on the basis of the processed image data, that is, the transmitting end projects the image displayed on the screen into the screen of the receiving end.
Further, since the receiving end receives the data packet, which is usually in the WiFi format, through the WiFi connection in the unidirectional transmission, the data packet in the WiFi format includes the data packet in the HDMI format, and the data packet in the HDMI format includes the image data, when the receiving end receives the data packet in the WiFi format, the receiving end may unpack the data packet in the WiFi format to obtain the data packet in the HDMI format, unpack the data packet in the HDMI format to obtain the image data, analyze the image data, that is, process the image data, and then perform image display based on the processed image data.
It should be noted that, in order to improve the reliability of receiving the image data, the receiving end may perform data verification on the image data when receiving the image data, and when there is no obstacle between the transmitting end and the receiving end, the receiving end may perform data verification on the image data without obstacle blocking, and since the process of performing data verification on the image data without obstacle blocking is generally simpler than the process of performing data verification on the image data with obstacle blocking, time can be saved, the efficiency of transmitting the image data is improved, that is, the delay of transmitting the image data is reduced. In addition, when no barrier blocks between the sending end and the receiving end, the energy consumption of the sending end can be reduced, and the cost is saved.
It should be noted that, as the distance between the transmitting end and the receiving end is closer, the energy consumption of the transmitting end can be reduced, and the cost can be reduced. For example, the distance between the transmitting end and the receiving end may be within 10 meters, and in practical applications, the distance between the transmitting end and the receiving end may be other distances.
In the embodiment of the invention, firstly, a sending end and a receiving end for sending the image data do not need to be provided with chips with WFD functions, the sending end can obtain the image data when receiving an image data transmission instruction, and establish WiFi connection with the receiving end based on a WiFi network, and the image data is sent to the receiving end through the WiFi connection, namely, an image displayed in a screen of the sending end can be projected to a screen of the receiving end directly through the WiFi chip, so that the cost for transmitting the image data is reduced. Secondly, because the WiFi connection is set as the WiFi connection of one-way transmission, the data such as a control request for keeping the WiFi connection sent by the receiving end to the sending end through the WiFi connection are saved, the image displayed in the screen of the sending end is ensured to be projected to the screen of the receiving end directly through the WiFi chip, the cost for transmitting the image data can be reduced, the time can be saved, the efficiency for sending the image data is improved, and the time delay for transmitting the image data is reduced. In addition, the sending end can convert the obtained image data into image data in a preset format, where the preset format may include a 1080P scan format, a 60 frame rate, and a YCbCr422 color space, so that the data amount of the image data to be transmitted can be reduced while the image quality in the screen projected to the receiving end is ensured, and the delay of transmitting the image data is further reduced. By the image data transmission method provided by the invention, the theoretical value of the speed for transmitting the image data can be 3Gbit/s (gigabit per second), the delay can be 5ms (millisecond), and when the sending end and the receiving end transmit the image data by arranging the chip with the WFD function, the delay for transmitting the image data is usually 200ms, so that the image data transmission method provided by the invention can reduce the delay of about 97.5 percent, namely can remarkably reduce the delay for transmitting the image data.
The method for transmitting image data according to the present invention is described above with reference to the detailed description and the accompanying drawings, and an apparatus corresponding to the method is described below with reference to the accompanying drawings.
Fig. 4 is a block diagram of an apparatus for transmitting image data according to an embodiment of the present invention, where the apparatus is used in a transmitting end, and the transmitting end is a mobile terminal, and referring to fig. 4, the apparatus includes: an acquisition module 401 and a first wireless fidelity WiFi module 402.
An obtaining module 401, configured to obtain a currently displayed image when an image data transmission instruction is received, so as to obtain image data to be transmitted;
a first wireless fidelity WiFi module 402, configured to establish a WiFi connection with a receiving end based on a WiFi network, where the receiving end is a display device with a processing function;
a first WiFi module 402, configured to send the image data to the receiving end based on the one-way WiFi connection.
Optionally, the first wireless fidelity WiFi module 402 comprises:
the first sending submodule is used for sending a connection request to the receiving terminal based on the WiFi network, and the connection request is used for indicating the establishment of the WiFi connection of the unidirectional transmission with the receiving terminal;
and the determining submodule is used for determining that the WiFi connection of the unidirectional transmission between the receiving terminal and the receiving terminal is successfully established when the connection response returned by the receiving terminal is received.
Optionally, the apparatus further comprises:
the conversion module is used for converting the image data into image data in a preset format;
the encapsulation module is used for encapsulating the converted image data into a data packet in an HDMI format and encapsulating the data packet in the HDMI format into a data packet in a WiFi format;
correspondingly, the first WiFi module 402 is further configured to send the data packet in the WiFi format to the receiving end based on the WiFi connection of the unidirectional transmission, so as to send the converted image data to the receiving end.
Optionally, the preset format includes: the scan format is 1080P, the frame rate is 60, and the color space is YCbCr 422.
In the embodiment of the invention, firstly, a sending end and a receiving end for sending the image data do not need to be provided with chips with WFD functions, the sending end can obtain the image data when receiving an image data transmission instruction, and establish WiFi connection with the receiving end based on a WiFi network, and the image data is sent to the receiving end through the WiFi connection, namely, an image displayed in a screen of the sending end can be projected to a screen of the receiving end directly through the WiFi chip, so that the cost for transmitting the image data is reduced. Secondly, because the WiFi connection is the WiFi connection of unidirectional transmission, the data such as control requests for keeping the WiFi connection are saved from being sent to the sending end by the receiving end through the WiFi connection, and the images displayed on the screen of the sending end are ensured to be projected to the screen of the receiving end directly through the WiFi chip, so that the cost for transmitting the image data is reduced, the time can be saved, the efficiency for sending the image data is improved, and the time delay for transmitting the image data is reduced.
It should be noted that: the apparatus for transmitting image data provided in the above embodiment is only illustrated by the division of the above functional modules when transmitting image data, and in practical applications, the above functions may be distributed by different functional modules according to needs, that is, the internal structure of the device is divided into different functional modules to complete all or part of the above described functions. In addition, the apparatus for transmitting image data and the method for transmitting image data provided by the above embodiments belong to the same concept, and specific implementation processes thereof are detailed in the method embodiments and are not described herein again.
Fig. 5A is a diagram illustrating an architecture of a system for transmitting image data according to an exemplary embodiment, and referring to fig. 5A, the system includes a transmitting end 51 and a receiving end 52, and the transmitting end 51 and the receiving end 52 may be connected via a WiFi network.
It should be noted that the sending end 51 may be a mobile terminal with a small screen, such as a mobile phone or a tablet computer, and of course, in practical applications, the sending end 51 may also be another mobile terminal. The receiving end 52 may be a display device with processing function, such as a computer, a smart television, and the like.
When the sending end 51 needs to project the content displayed in the current screen to the screen of the receiving end 52, the sending end 51 may obtain the content displayed currently to obtain image data to be sent, establish a WiFi connection with the receiving end 52, and send the image data to the receiving end 52 through the WiFi connection, and when the receiving end 52 receives the image data, the image data may be analyzed, and an image is displayed on the screen.
The sending end 51 includes an obtaining module 401 and a first WiFi module 402, and the receiving end 52 includes an image processing module 520 and an image display module 521. The acquiring module 401 is configured to acquire a currently displayed image to obtain image data to be transmitted when an image data transmission instruction is received, the first wireless fidelity WiFi module 402 is configured to establish a WiFi connection with a receiving end based on a WiFi network, and send the image data to the receiving end based on the WiFi connection with the one-way transmission, the image processing module 520 is configured to receive the image data and process the image data, and the image display module 521 is configured to perform image display based on the processed image data.
Optionally, the image data received by the image processing module 520 is obtained by the first WiFi module 402 encapsulating the image data in the preset format into a data packet in the HDMI format, and encapsulating the data packet in the HDMI format into a data packet in the WiFi format.
As shown in fig. 5B, the image processing module 520 includes a DSP5200, a second WiFi sub-module 5201 and an HDMI sub-module 5202. The second WiFi sub-module 5201 is configured to receive the data packet in the WiFi format, the DSP5200 is configured to decapsulate the data packet in the WiFi format to obtain the data packet in the HDMI format, and the HDMI sub-module 5202 is configured to send the data packet in the HDMI format to the image display module 521.
It should be noted that the image processing module 520 may be built inside the receiving end 52, as shown in fig. 5A, or of course, may be externally connected to the receiving end 52, as shown in fig. 5C.
Further, in order to reduce the delay of transmitting the image data, the HDMI sub-module may send the data packet in the HDMI format to the image display module in a unidirectional transmission manner.
In the embodiment of the invention, firstly, a sending end and a receiving end for sending the image data do not need to be provided with chips with WFD functions, the sending end can obtain the image data when receiving an image data transmission instruction, and establish WiFi connection with the receiving end based on a WiFi network, and the image data is sent to the receiving end through the WiFi connection, namely, an image displayed in a screen of the sending end can be projected to a screen of the receiving end directly through the WiFi chip, so that the cost for transmitting the image data is obviously reduced. Secondly, because the WiFi connection is the WiFi connection of unidirectional transmission, the data such as control requests for keeping the WiFi connection are saved from being sent to the sending end by the receiving end through the WiFi connection, the image displayed in the screen of the sending end is ensured to be projected to the screen of the receiving end directly through the WiFi chip, the cost for transmitting the image data is reduced, the time can be saved, the efficiency for sending the image data is improved, and the time delay for transmitting the image data is reduced.
It will be understood by those skilled in the art that all or part of the steps for implementing the above embodiments may be implemented by hardware, or may be implemented by a program instructing relevant hardware, where the program may be stored in a computer-readable storage medium, and the above-mentioned storage medium may be a read-only memory, a magnetic disk or an optical disk, etc.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (9)
1. A method for transmitting image data, the method being used in a transmitting end, the transmitting end including a mobile terminal, the method comprising:
when an image data transmission instruction is received, acquiring a currently displayed image to obtain image data to be transmitted;
establishing a WiFi connection with a receiving end in one-way transmission based on a wireless fidelity WiFi network, wherein the receiving end comprises display equipment with a processing function;
converting the image data into image data in a preset format;
packaging the converted image data into a data packet in a high-definition multimedia interface (HDMI) format, and packaging the data packet in the HDMI format into a data packet in a WiFi format;
and based on the unidirectional transmission WiFi connection, the data packet in the WiFi format is sent to the receiving end so as to send the converted image data to the receiving end, and the receiving end is used for displaying an image based on the processed image data in a screen after unpacking, analysis and data verification processing are carried out on the received image data.
2. The method of claim 1, wherein establishing a WiFi connection based on a unidirectional transmission between a WiFi network and a receiving end comprises:
sending a connection request to the receiving end based on the WiFi network, wherein the connection request is used for indicating the WiFi connection which is established with the receiving end in the unidirectional transmission mode;
when receiving a connection response returned by the receiving end, determining that the WiFi connection of the unidirectional transmission between the receiving end and the WiFi connection is successfully established;
and when the connection response returned by the receiving end is not received, determining that the WiFi connection with the one-way transmission between the receiving end and the receiving end fails to be established, and displaying a connection failure prompt message.
3. The method of claim 1, wherein the preset format comprises: the scan format is 1080P, the frame rate is 60, and the color space is YCbCr 422.
4. The method of claim 1, wherein the WiFi connection for unidirectional transmission is a 60 gigahertz (G) WiFi connection.
5. An apparatus for transmitting image data, the apparatus being used in a transmitting end, the transmitting end including a mobile terminal, the apparatus comprising:
the acquisition module is used for acquiring a currently displayed image to obtain image data to be transmitted when an image data transmission instruction is received;
the first wireless fidelity WiFi module is used for establishing a WiFi connection with a receiving end in one-way transmission based on a WiFi network, and the receiving end comprises display equipment with a processing function;
the conversion module is used for converting the image data into image data in a preset format;
the encapsulation module is used for encapsulating the converted image data into a data packet in a high-definition multimedia interface (HDMI) format and encapsulating the data packet in the HDMI format into a data packet in a WiFi format;
the first wireless fidelity WiFi module is used for transmitting the data packet in the WiFi format to the receiving end based on the WiFi connection of the one-way transmission so as to transmit the converted image data to the receiving end, and the receiving end is used for displaying an image based on the processed image data in a screen after unpacking, analyzing and data checking processing are carried out on the received image data.
6. The apparatus of claim 5, wherein the first wireless fidelity (WiFi) module comprises:
the first sending submodule is used for sending a connection request to the receiving end based on the WiFi network, and the connection request is used for indicating the establishment of the WiFi connection of the unidirectional transmission with the receiving end;
and the determining submodule is used for determining that the WiFi connection of the unidirectional transmission between the determining submodule and the receiving terminal is successfully established when the connection response returned by the receiving terminal is received, and determining that the WiFi connection of the unidirectional transmission between the determining submodule and the receiving terminal is failed to be established when the connection response returned by the receiving terminal is not received, and displaying the prompt information of the connection failure.
7. The apparatus of claim 5, wherein the preset format comprises: the scan format is 1080P, the frame rate is 60, and the color space is YCbCr 422.
8. A system for transmitting image data is characterized by comprising a sending end and a receiving end, wherein the sending end comprises a mobile terminal, the receiving end comprises a display device with a processing function, the sending end comprises an acquisition module and a first wireless fidelity WiFi module, and the receiving end comprises an image processing module and an image display module;
the acquisition module is used for acquiring a currently displayed image to obtain image data to be transmitted when an image data transmission instruction is received;
the first wireless fidelity WiFi module is used for establishing a WiFi connection with a receiving end in one-way transmission based on a WiFi network and sending the image data to the receiving end based on the WiFi connection in one-way transmission;
the image processing module is used for receiving the image data and performing unpacking, analysis and data verification processing on the image data;
the image display module is used for displaying images based on the processed image data;
the image data received by the image processing module is the image data obtained by the first wireless fidelity WiFi module packaging the image data in a preset format into a data packet in a High Definition Multimedia Interface (HDMI) format and packaging the data packet in the HDMI format into a data packet in a WiFi format.
9. The system of claim 8, wherein the image processing module comprises a Digital Signal Processor (DSP), a second WiFi sub-module, and an HDMI sub-module;
the second WiFi sub-module is used for receiving the data packet in the WiFi format;
the DSP is used for de-encapsulating the data packet in the WiFi format to obtain the data packet in the HDMI format;
and the HDMI sub-module is used for sending the data packet in the HDMI format to the image display module.
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Address after: 266071 Shandong city of Qingdao province Jiangxi City Road No. 11 Patentee after: Qingdao Hisense Mobile Communication Technology Co.,Ltd. Address before: 266071 Shandong city of Qingdao province Jiangxi City Road No. 11 Patentee before: HISENSE MOBILE COMMUNICATIONS TECHNOLOGY Co.,Ltd. |