CN107454462B - Data transmission method, device and system - Google Patents
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- 230000015654 memory Effects 0.000 claims abstract description 141
- 238000012545 processing Methods 0.000 claims abstract description 105
- 238000006243 chemical reaction Methods 0.000 claims abstract description 20
- 238000012544 monitoring process Methods 0.000 claims description 8
- 238000013075 data extraction Methods 0.000 claims description 2
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
- H04N21/436—Interfacing a local distribution network, e.g. communicating with another STB or one or more peripheral devices inside the home
- H04N21/4363—Adapting the video stream to a specific local network, e.g. a Bluetooth® network
- H04N21/43632—Adapting the video stream to a specific local network, e.g. a Bluetooth® network involving a wired protocol, e.g. IEEE 1394
- H04N21/43635—HDMI
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L69/00—Network arrangements, protocols or services independent of the application payload and not provided for in the other groups of this subclass
- H04L69/08—Protocols for interworking; Protocol conversion
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/41—Structure of client; Structure of client peripherals
- H04N21/4104—Peripherals receiving signals from specially adapted client devices
- H04N21/4122—Peripherals receiving signals from specially adapted client devices additional display device, e.g. video projector
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
- H04N21/442—Monitoring of processes or resources, e.g. detecting the failure of a recording device, monitoring the downstream bandwidth, the number of times a movie has been viewed, the storage space available from the internal hard disk
- H04N21/44204—Monitoring of content usage, e.g. the number of times a movie has been viewed, copied or the amount which has been watched
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Abstract
The invention provides a data transmission method, which is applied to a display interface receiver and comprises the following steps: receiving compressed display data sent by a data sending end; extracting core data and image parameter set data from the compressed display data; storing the image parameter set data into an image parameter set memory according to a manner in which a mobile domain processing interface transmitter transmits the image parameter set data; storing the core data into a core data memory according to a manner in which a mobile domain processing interface transmitter reads the core data. By adopting the technical scheme, protocol conversion among different protocol interfaces is realized on the premise of not needing encoding and decoding, and meanwhile, the functions of realizing general display data protocol conversion and compressed display data protocol conversion are achieved, so that the conversion efficiency is higher.
Description
Technical Field
The present invention relates to the field of data transmission technologies, and in particular, to a data transmission method, apparatus, and system.
Background
Video data is typically transmitted as general purpose display data or as compressed display data. The universal Display data is standard image data, and includes core data and control data, and a Display Interface (DP) for transmitting video data and a Mobile Industry Processor Interface (MIPI) for transmitting Mobile Industry Processor Interface (MIPI) transmit or receive the universal Display data according to different formats, but in essence, the core data is the same for the same frame of picture; the compressed Display data is compressed Display data formed by compressing core data in standard image data by a Display stream compression algorithm (DSC) to obtain core compressed data and adding a Picture Parameter Set (PPS) and control data.
The current protocols related to the transmission of compressed Display data include DSC protocol, DP1.4 version protocol, and 1.3.1 version protocol of Display Serial Interface (DSI) protocol, i.e., MIPIDSI1.3.1 protocol. DP1.4 is the latest protocol for DP interface, and defines two different transmission modes for general display data and compressed display data. MIPI DSI1.3.1 is the latest protocol of MIPI DSI interface, and also specifies two different transmission modes of general display data and compressed data. It should be noted that, the DP and MIPI transmission modes are different, and generally, a data transmission path using a DP interface is a DP transmitter for transmitting data, and a DP receiver for receiving data, and a data transmission path using a MIPI interface is a MIPI transmitter for transmitting data, and a MIPI receiver for receiving data. If the DP transmitter is to transmit data and the MIPI receiver is to receive data, so as to implement transmission of video data, an additional step is required in the middle to perform protocol conversion.
And for the general display data, extracting the general display data by the DP and then sending the general display data by adopting an MIPI DSI general display data format to finish the conversion process. However, for compressed display data, the existing processing method is to add a decoder at the DP end, restore the compressed display data to general display data, then send the general display data to the MIPI end, add an encoder at the MIPI end, and then change the general display data into the compressed display data to send. The protocol conversion process for the compressed display data needs to add a decoder and an encoder, so that the cost is high, the time is wasted in the encoding and decoding process, and the error rate is increased.
Disclosure of Invention
Based on the defects and shortcomings of the prior art, the invention provides a data transmission method, device and system, which can quickly complete protocol conversion in video data transmission on the premise of not increasing cost.
The first aspect of the present invention provides a data transmission method, applied to a display interface receiver, the method including: receiving compressed display data sent by a data sending end; extracting core data and image parameter set data from the compressed display data; storing the image parameter set data into an image parameter set memory according to the mode of transmitting the image parameter set data by a mobile domain processing interface transmitter, and enabling the mobile domain processing interface transmitter to read the image parameter set data from the image parameter set memory; storing the core data into a core data memory according to the mode of reading the core data by the mobile domain processing interface transmitter, so that the mobile domain processing interface transmitter reads the core data from the core data memory and transmits the core data. In the technical scheme, the display interface receiver stores the received data into the memory in a manner of sending or reading the data by the mobile field processing interface transmitter, and the mobile field processing interface transmitter reads and sends the data from the memory, so that protocol conversion among different protocol interfaces is realized on the premise of not needing encoding and decoding.
In a second aspect, the present invention provides a data transmission device applied to a display interface receiver, including: the data receiving unit is used for receiving the compressed display data sent by the data sending end; the data extraction unit is used for extracting core data and image parameter set data from the compressed display data; a first storage unit configured to store the image parameter set data in an image parameter set memory according to a manner in which a moving field processing interface transmitter transmits the image parameter set data, and to cause the moving field processing interface transmitter to read the image parameter set data from the image parameter set memory; and the second storage unit is used for storing the core data into a core data memory according to a mode of reading the core data by the mobile domain processing interface transmitter, so that the mobile domain processing interface transmitter reads the core data from the core data memory and transmits the core data.
In one implementation, the extracting core data and a picture parameter set from the compressed display data includes: monitoring the received compressed display data stream; when the image parameter set data is monitored, extracting the monitored image parameter set data; when the core data is monitored, the monitored core data is extracted.
In one implementation, after extracting the core data and the picture parameter set data from the compressed display data, before storing the picture parameter set data in a picture parameter set memory, the method further comprises: and setting parameters of the display interface receiver according to the image parameter set data.
The third aspect of the present invention provides another data transmission method, applied to a mobile domain processing interface transmitter, including: reading the picture parameter set data from the picture parameter set memory; wherein the image parameter set data is an image parameter set of compressed display data, which is stored in the image parameter set memory by the display interface receiver according to a mode of transmitting the image parameter set data by the moving domain processing interface transmitter; sending the read image parameter set data to a data receiving end; reading core data from a core data memory; the core data is the core data of the compressed data, which is stored in the core data memory by the display interface receiver according to the mode of reading the core data by the mobile domain processing interface transmitter; and sending the read core data to a data receiving end. In the technical scheme, the display interface receiver stores the received data into the memory in a manner of sending or reading the data by the mobile field processing interface transmitter, and the mobile field processing interface transmitter reads and sends the data from the memory, so that protocol conversion among different protocol interfaces is realized on the premise of not needing encoding and decoding.
The fourth aspect of the present invention provides a data transmission method, which is applied to a processing interface transmitter in the mobile domain, and the apparatus includes: a first reading unit configured to read the image parameter set data from the image parameter set memory; wherein the image parameter set data is an image parameter set of compressed display data, which is stored in the image parameter set memory by the display interface receiver according to a mode of transmitting the image parameter set data by the moving domain processing interface transmitter; a first sending unit, configured to send the image parameter set data read by the first reading unit to a data receiving end; a second reading unit for reading the core data from the core data memory; the core data is the core data of the compressed data, which is stored in the core data memory by the display interface receiver according to the mode of reading the core data by the mobile domain processing interface transmitter; and the second sending unit is used for sending the core data read by the second reading unit to a data receiving end.
In one implementation, after reading the picture parameter set data from the picture parameter set memory, before transmitting the read picture parameter set data to the data receiving end, the method further includes: configuring parameters of the MOV processing interface transmitter according to the image parameter set data.
A fifth aspect of the present invention provides a data transmission system, including: the mobile field processing system comprises a display interface receiver, a memory and a mobile field processing interface transmitter; the display interface receiver is connected with the memory and used for receiving compressed display data sent by the data sending end; extracting core data and image parameter set data from the compressed display data; storing the image parameter set data into an image parameter set memory according to a manner in which a mobile domain processing interface transmitter transmits the image parameter set data; storing the core data into a core data memory according to a mode of reading the core data by a mobile domain processing interface transmitter; the memory is connected with the mobile domain processing interface transmitter and comprises a picture parameter set memory and a core data memory which are respectively used for storing picture parameter set data and core data; the MOV processing interface transmitter is used for reading the image parameter set data from the image parameter set memory; sending the read image parameter set data to a data receiving end; reading core data from a core data memory; and sending the read core data to a data receiving end. In the technical scheme, the display interface receiver stores the received data into the memory in a manner of sending or reading the data by the mobile field processing interface transmitter, and the mobile field processing interface transmitter reads and sends the data from the memory, so that protocol conversion among different protocol interfaces is realized on the premise of not needing encoding and decoding.
In one implementation, when the display interface receiver extracts the core data and the image parameter set from the compressed display data, the display interface receiver is specifically configured to: monitoring the received compressed display data stream; when the image parameter set data is monitored, extracting the monitored image parameter set data; when the core data is monitored, the monitored core data is extracted.
In one implementation, the display interface receiver is further configured to: and setting parameters of the display interface receiver according to the extracted image parameter set data.
In one implementation, the mobile domain processing interface transmitter is further configured to: and setting the parameters of the mobile field processing interface transmitter according to the read image parameter set data.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.
Fig. 1 is a schematic flow chart of a data transmission method according to an embodiment of the present invention;
fig. 2 is a schematic flow chart of another data transmission method according to an embodiment of the present invention;
fig. 3 is a schematic flow chart of another data transmission method according to an embodiment of the present invention;
FIG. 4 is a schematic diagram of data transmission provided by an embodiment of the present invention;
fig. 5 is a schematic structural diagram of a data transmission apparatus according to an embodiment of the present invention;
fig. 6 is a schematic structural diagram of another data transmission apparatus according to an embodiment of the present invention;
fig. 7 is a schematic structural diagram of a data transmission system according to an embodiment of the present invention.
Detailed Description
The embodiment of the invention is suitable for the DP transmitter to transmit data and the MIPI receiver to receive data, thereby realizing the application scene of video data transmission. By adopting the technical scheme of the embodiment of the invention, the DP transmitter can transmit data and the MIPI receiver can receive data on the premise of not needing encoding and decoding, thereby realizing the transmission of video data.
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The embodiment of the invention discloses a data transmission method, which is applied to a display interface receiver and is shown in figure 1, and the method comprises the following steps:
s101, receiving compressed display data sent by a data sending end;
specifically, in the embodiment of the present invention, the external DP SOURCE, such as the host computer, sends the compressed display data to the display interface receiver DP RX according to the format requirement in the DP1.4 protocol.
S102, extracting core data and image parameter set data from the compressed display data;
specifically, the DP RX performs segment extraction, that is, extraction in chronological order, on the core data and the picture parameter set data PPS in the compressed display data according to the DP1.4 protocol. The video data is transmitted in a serial manner, so that the compressed display data is transmitted in a sequential order. The PPS is transmitted first, followed by other types of data (outside the scope of the discussion of the embodiments of the invention) before the core data is received. Any type of data is composed of one or more strings, where the beginning data of each string defines the type of the current string and the end data marks the end of the current string. DP RX needs to first determine the type of current data (including PPS, core data, or other types of data) and then perform subsequent operations.
S103, storing the image parameter set data into an image parameter set memory according to the mode of sending the image parameter set data by the mobile domain processing interface sender, and enabling the mobile domain processing interface sender to read the image parameter set data from the image parameter set memory;
specifically, since the way of sending the PPS data by the display interface DP is different from the way of sending the PPS data by the mobile domain processing interface MIPI, the PPS data received by the DP RX needs to be stored in the PPS memory according to the way of sending the PPS data by the MIPI, so that the MIPI can read and send the PPS data from the PPS memory.
S104, storing the core data into a core data memory according to a mode of reading the core data by the mobile domain processing interface transmitter, so that the mobile domain processing interface transmitter reads the core data from the core data memory and transmits the core data.
Specifically, after extracting the PPS data from the received compressed display data, the DP RX may extract the core data, i.e., chunk data, from the received compressed display data at the first time, and store the core data in the chunk sram, i.e., the core data memory. It should be noted that, in step S303, after the DP RX receives the PPS data, it first configures its own parameters according to the PPS data, where the parameters include a way for the DP RX to store chunk data in the core data memory chunk sram, and the way conforms to a way for the mh transmitter to read data, so that the mh transmitter can read the core data from the core data memory.
In the technical scheme, the display interface receiver stores the received data into the memory in a manner of sending or reading the data by the mobile field processing interface transmitter, and the mobile field processing interface transmitter reads and sends the data from the memory, so that protocol conversion among different protocol interfaces is realized on the premise of not needing encoding and decoding.
The embodiment of the invention also discloses another data transmission method, which is applied to a processing interface transmitter in the mobile field, and is shown in figure 2, and the method comprises the following steps:
s201, reading image parameter set data from an image parameter set memory; wherein the image parameter set data is an image parameter set of compressed display data, which is stored in the image parameter set memory by the display interface receiver according to a mode of transmitting the image parameter set data by the moving domain processing interface transmitter;
specifically, since the DP RX first transfers the PPS data to the PPS memory when transmitting the compressed display data, the MIPI TX may first read the PPS data stored by the DP RX from the PPS memory.
S202, sending the read image parameter set data to a data receiving end;
specifically, the MIPI TX sends PPS data read from the PPS memory to the data receiving end according to the MIPI DSI1.3.1 protocol.
S203, reading core data from a core data memory; the core data is the core data of the compressed data, which is stored in the core data memory by the display interface receiver according to the mode of reading the core data by the mobile domain processing interface transmitter;
specifically, after sending out the PPS data, the MIPI TX reads the data in the core data memory chunk sram for a certain time.
And S204, sending the read core data to a data receiving end.
Specifically, the MIPI TX sends the read core data to the data receiving end according to the MIPI DSI1.3.1 protocol.
In the technical scheme, the display interface receiver stores the received data into the memory in a manner of sending or reading the data by the mobile field processing interface transmitter, and the mobile field processing interface transmitter reads and sends the data from the memory, so that protocol conversion among different protocol interfaces is realized on the premise of not needing encoding and decoding.
In practical implementation of the technical solution of the embodiment of the present invention, the display interface receiver and the mobile domain processing interface transmitter cooperate with each other to complete transmission of video data. Fig. 3 shows a detailed process procedure of the data transmission method shown in fig. 1 and 2 in combination. Referring to fig. 3, a data transmission method disclosed in the embodiment of the present invention specifically includes:
s301, a display interface receiver receives compressed display data sent by a data sending end;
specifically, referring to fig. 4, in the embodiment of the present invention, the external DP SOURCE, such as the host computer, sends the compressed display data to the display interface receiver DP RX according to the format requirement in the DP1.4 protocol.
S302, extracting core data and image parameter set data from the compressed display data by a display interface receiver;
specifically, the DP RX performs segment extraction, that is, extraction in chronological order, on the core data and the picture parameter set data PPS in the compressed display data according to the DP1.4 protocol. The video data is transmitted in a serial manner, so that the compressed display data is transmitted in a sequential order. The PPS is transmitted first, followed by other types of data (outside the scope of the discussion of the embodiments of the invention) before the core data is received. Any type of data is composed of one or more strings, where the beginning data of each string defines the type of the current string and the end data marks the end of the current string. DP RX needs to first determine the type of current data (including PPS, core data, or other types of data) and then perform subsequent operations.
The specific process of extracting the core data and the PPS data from the compressed display data by the display interface receiver DP RX is as follows:
the DP RX monitors the received data in real time and performs corresponding processing according to different types of data;
when monitoring the PPS data, extracting the PPS data, and storing the data into a PPS sram, namely a PPS memory; when the core data is monitored, the core data is extracted and stored into chunk sram, i.e., a core data memory.
These two types of data transfer may not be continuous in time, i.e., the PPS extraction is complete, requiring some time before the core data is received.
It should be noted that, since the general display data does not include the PPS data, when the embodiment of the present invention is used to transmit the general display data, in step S302, only the core data in the general display data is extracted.
S303, the display interface receiver sets parameters of the display interface receiver according to the image parameter set data;
specifically, generally, when the compressed display data is transmitted, the data transmitting end DP SOURCE first transmits PPS data, and the data receiving end completes the DSC algorithm configuration in advance after receiving the PPS data, and waits for the subsequent core data to be decompressed. Thus, in transmitting the compressed display data, DP RX first extracts the PPS data. Then, the display interface receiver DP RX configures its own relevant parameters according to the extracted PPS data to ensure that the subsequently received compressed display data is consistent with the data sent by the data sending end DP SOURCE.
It should be noted that, when the embodiment of the present invention is used to transmit the general display data, since the general display data does not include the PPS data, step S303 may be directly skipped and the subsequent processing steps may be performed.
S304, the display interface receiver stores the received image parameter set data into the image parameter set memory according to the mode of sending the image parameter set data by the mobile field processing interface sender;
specifically, since the way of sending the PPS data by the display interface DP is different from the way of sending the PPS data by the mobile domain processing interface MIPI, the PPS data received by the DP RX needs to be stored in the PPS memory according to the way of sending the PPS data by the MIPI, so that the MIPI can read and send the PPS data from the PPS memory.
It should be noted that, when the technical solution of the embodiment of the present invention is applied to transmit the general display data, since the general display data does not have PPS data, step S304 may be directly skipped and the subsequent steps are executed.
S305, the mobile domain processing interface transmitter reads the image parameter set data from the image parameter set memory;
specifically, since the DP RX first transfers the PPS data to the PPS memory when transmitting the compressed display data, the MIPI TX may first read the PPS data stored by the DP RX from the PPS memory.
It should be noted that, when the technical solution of the embodiment of the present invention is applied to transmit the general display data, since the general display data does not have PPS data, step S304 may be directly skipped and the subsequent steps are executed.
S306, the mobile domain processing interface transmitter configures parameters of the mobile domain processing interface transmitter according to the read image parameter set data;
specifically, the MIPI TX configures its own related parameters according to the read PPS data, so as to ensure that subsequently transmitted compressed display data is consistent with received compressed display data.
It should be noted that, when the technical solution of the embodiment of the present invention is applied to transmit the general display data, since the general display data does not have PPS data, step S304 may be directly skipped and the subsequent steps are executed.
S307, the mobile domain processing interface transmitter transmits the read image parameter set data to a data receiving end;
specifically, the MIPI TX sends PPS data read from the PPS memory to the data receiving end according to the MIPI DSI1.3.1 protocol.
In fact, since the compressed beam data is transmitted in the transmission channel in a data stream manner, DP RX may continuously receive PPS data and store the received PPS data in the PPS memory, so MIPI TX can continuously read PPS data from the PPS memory, and transmit PPS data once at the beginning of transmitting each frame of picture.
It should be noted that, when the technical solution of the embodiment of the present invention is applied to transmit the general display data, since the general display data does not have PPS data, step S304 may be directly skipped and the subsequent steps are executed.
S308, the display interface receiver stores the core data into a core data memory according to the mode of reading the core data by the mobile field processing interface transmitter;
specifically, after extracting the PPS data from the received compressed display data, the DP RX may extract the core data, i.e., chunk data, from the received compressed display data at the first time, and store the core data in the chunk sram, i.e., the core data memory. It should be noted that, in step S303, after the DP RX receives the PPS data, it first configures its own parameters according to the PPS data, where the parameters include a way for the DP RX to store chunk data in the core data memory chunk sram, and the way conforms to a way for the mh transmitter to read data, so that the mh transmitter can read the core data from the core data memory.
It should be noted that, when the embodiment of the present invention is used for transmitting the general display data, since the general display data does not include the PPS data, the DP RX cannot configure its parameters according to the PPS data. The DP RX stores the core data in the core data memory directly in the default manner, but ensures that the core data stored in the default manner can be directly read by the mh transmitter.
S309, the mobile domain processing interface transmitter reads core data from the core data memory;
specifically, after sending out the PPS data, the MIPI TX reads the data in the core data memory chunk sram for a certain time.
It should be noted that, in step S306, after the MIPI TX reads the PPS data from the PPS memory, a parameter related to itself is configured, where the parameter includes a manner in which the MIPI TX reads the core data from the core data memory. When the technical scheme of the embodiment of the invention is applied to the transmission of the general display data, the general display data does not contain PPS data, so that the mobile domain processing interface transmitter does not need to read the PPS data from the PPS memory, and can not configure the parameters of the mobile domain processing interface transmitter according to the read PPS data, but directly reads the core data from the core data memory chunk sram according to a default data reading mode.
And S310, the mobile domain processing interface transmitter transmits the read core data to a data receiving end.
Specifically, the MIPI TX sends the read core data to the data receiving end according to the MIPI DSI1.3.1 protocol.
By executing the processing steps, the PPS data and the core data are received at the data receiving end in sequence, the PPS data and the core data are combined into compressed display data through an MIPI TX protocol, and the data receiving end displays images according to a compressed display data format.
It should be noted that, in the above whole flow, data is transmitted in real time, DP RX continuously receives data, and MIPITX continuously transmits data, so the sizes of the PPS memory and the core data memory can be freely set according to actual needs, and continuous real-time transmission can be satisfied. Secondly, because each frame of image is PPS data in front and core data in back, the actual PPS memory and the core data memory are not required to be completely divided in an independent mode according to the PPS memory and the core data memory, the two memories can be combined into one memory, the size of the memory is set according to actual needs, the MIPI TX can read the memories in sequence, the data read out first is the PPS data, and the data read out later is the core data.
According to the technical scheme, the DP transmitter sends data and the MIPI receiver receives data on the premise of not needing encoding and decoding according to the DP1.4 protocol and the MIPI DSI1.3.1 protocol, and meanwhile the function of realizing conversion of a general display data protocol and conversion of a compressed display data protocol is achieved, so that transmission of video data is achieved, and transmission efficiency is high.
Fig. 5 is a schematic structural diagram of a data transmission device applied to a display interface receiver, according to an embodiment of the present invention, including: a data receiving unit 501, configured to receive compressed display data sent by a data sending end; a data extracting unit 502, configured to extract core data and image parameter set data from the compressed display data; a first storage unit 503, configured to store the image parameter set data in an image parameter set memory according to a manner in which the mh transmitter transmits the image parameter set data, so that the mh transmitter reads the image parameter set data from the image parameter set memory; a second storage unit 504, configured to store the core data into a core data memory according to a manner of reading the core data by the mobile domain processing interface transmitter, so that the mobile domain processing interface transmitter reads the core data from the core data memory, and transmits the core data.
When the data extracting unit 502 extracts the core data and the image parameter set from the compressed display data, the data extracting unit is specifically configured to: monitoring the received compressed display data stream; when the image parameter set data is monitored, extracting the monitored image parameter set data; when the core data is monitored, the monitored core data is extracted.
In another embodiment of the present invention, the apparatus further comprises: and the configuration unit is used for setting the parameters of the display interface receiver according to the image parameter set data.
Specifically, please refer to the contents of the above method embodiments for the specific working contents of each unit of the data transmission apparatus in the above embodiments, which are not described herein again.
Fig. 6 is a schematic structural diagram of another data transmission apparatus applied to a mobile domain processing interface transmitter according to an embodiment of the present invention, including: a first reading unit 601 configured to read image parameter set data from the image parameter set memory; wherein the image parameter set data is an image parameter set of compressed display data, which is stored in the image parameter set memory by the display interface receiver according to a mode of transmitting the image parameter set data by the moving domain processing interface transmitter; a first sending unit 602, configured to send the image parameter set data read by the first reading unit to a data receiving end; a second reading unit 603 for reading the core data from the core data memory; the core data is the core data of the compressed data, which is stored in the core data memory by the display interface receiver according to the mode of reading the core data by the mobile domain processing interface transmitter; a second sending unit 604, configured to send the core data read by the second reading unit to a data receiving end.
In another embodiment of the present invention, the apparatus further comprises: and the parameter setting unit is used for configuring the parameters of the mobile domain processing interface transmitter according to the image parameter set data.
Specifically, please refer to the contents of the above method embodiments for the specific working contents of each unit of the data transmission apparatus in the above embodiments, which are not described herein again.
Fig. 7 is a schematic structural diagram of a data transmission system disclosed in an embodiment of the present invention, where the system includes: a display interface receiver 701, a memory 702, a mobile domain processing interface transmitter 703; the display interface receiver 701 is connected to the memory 702, and is configured to receive compressed display data sent by a data sending end; extracting core data and image parameter set data from the compressed display data; storing the image parameter set data into an image parameter set memory according to a manner in which a mobile domain processing interface transmitter transmits the image parameter set data; storing the core data into a core data memory according to a mode of reading the core data by a mobile domain processing interface transmitter; the memory 702 is connected to the mh transmitter 703, and includes a picture parameter set memory and a core data memory, which are respectively used for storing picture parameter set data and core data; the moving domain processing interface transmitter 703 is configured to read image parameter set data from an image parameter set memory; sending the read image parameter set data to a data receiving end; reading core data from a core data memory; and sending the read core data to a data receiving end.
When the display interface receiver extracts the core data and the image parameter set from the compressed display data, the display interface receiver is specifically configured to: monitoring the received compressed display data stream; when the image parameter set data is monitored, extracting the monitored image parameter set data; when the core data is monitored, the monitored core data is extracted.
The display interface receiver is further to: and setting parameters of the display interface receiver according to the extracted image parameter set data.
The mobile domain processing interface transmitter is further configured to: and setting the parameters of the mobile field processing interface transmitter according to the read image parameter set data.
Specifically, please refer to the contents of the above method embodiments for the specific working contents of each part in this embodiment, which are not described herein again.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (14)
1. A data transmission method is characterized in that the method is applied to a display interface receiver, the display interface receiver adopts a DP protocol, the display interface receiver stores received data into a memory in a mode of sending or reading the data by a mobile field processing interface transmitter, the mobile field processing interface transmitter reads and sends the data from the memory, and protocol conversion among different protocol interfaces is realized on the premise of not needing encoding and decoding, and the method comprises the following steps: receiving compressed display data sent by a display interface sender;
extracting core data sent by the display interface transmitter and image parameter set data sent by the display interface transmitter from the compressed display data sent by the display interface transmitter;
storing the image parameter set data into an image parameter set memory according to the mode of transmitting the image parameter set data by a mobile domain processing interface transmitter, and enabling the mobile domain processing interface transmitter to read the image parameter set data from the image parameter set memory;
storing the core data into a core data memory according to the mode of reading the core data by the mobile domain processing interface transmitter, so that the mobile domain processing interface transmitter reads the core data from the core data memory and transmits the core data.
2. The method of claim 1, wherein extracting core data and a set of picture parameters from the compressed display data comprises:
monitoring the received compressed display data stream;
when the image parameter set data is monitored, extracting the monitored image parameter set data;
when the core data is monitored, the monitored core data is extracted.
3. The method of claim 1, wherein after extracting core data and picture parameter set data from the compressed display data, prior to storing the picture parameter set data in a picture parameter set memory, the method further comprises:
and setting parameters of the display interface receiver according to the image parameter set data.
4. A data transmission method is characterized in that the method is applied to a mobile field processing interface transmitter, the mobile field processing interface transmitter adopts MIPIDSI protocol, a display interface receiver stores received data into a memory according to the way that the mobile field processing interface transmitter transmits or reads the data, the mobile field processing interface transmitter reads and transmits the data from the memory, and protocol conversion among different protocol interfaces is realized on the premise of not needing encoding and decoding, and the method comprises the following steps:
reading the picture parameter set data from the picture parameter set memory; the image parameter set data is the image parameter set which is received by the display interface receiver from the display interface transmitter, is stored in the image parameter set memory according to the mode of transmitting the image parameter set data by the mobile field processing interface transmitter and compresses the display data;
sending the read image parameter set data to a data receiving end;
reading core data from a core data memory; the core data is the core data of the compressed data, which is received by the display interface receiver from the display interface transmitter and is stored in the core data memory according to the mode of reading the core data by the mobile field processing interface transmitter;
and sending the read core data to a data receiving end.
5. The method according to claim 4, wherein after reading the picture parameter set data from the picture parameter set memory, before transmitting the read picture parameter set data to the data receiving terminal, the method further comprises:
configuring parameters of the MOV processing interface transmitter according to the image parameter set data.
6. A data transmission device is characterized in that the data transmission device is applied to a display interface receiver, the display interface receiver adopts a DP protocol, the display interface receiver stores received data into a memory in a mode of sending or reading the data by a mobile field processing interface transmitter, the mobile field processing interface transmitter reads and sends the data from the memory, and protocol conversion among different protocol interfaces is realized on the premise of not needing encoding and decoding, and the device comprises:
the data receiving unit is used for receiving the compressed display data sent by the display interface sender;
the data extraction unit is used for extracting and obtaining core data sent by the display interface sender and image parameter set data sent by the display interface sender from the compressed display data sent by the display interface sender;
a first storage unit configured to store the image parameter set data in an image parameter set memory according to a manner in which a moving field processing interface transmitter transmits the image parameter set data, and to cause the moving field processing interface transmitter to read the image parameter set data from the image parameter set memory;
and the second storage unit is used for storing the core data into a core data memory according to a mode of reading the core data by the mobile domain processing interface transmitter, so that the mobile domain processing interface transmitter reads the core data from the core data memory and transmits the core data.
7. The apparatus according to claim 6, wherein the data extracting unit, when extracting the core data and the image parameter set from the compressed display data, is specifically configured to:
monitoring the received compressed display data stream; when the image parameter set data is monitored, extracting the monitored image parameter set data; when the core data is monitored, the monitored core data is extracted.
8. The apparatus of claim 6, further comprising:
and the configuration unit is used for setting the parameters of the display interface receiver according to the image parameter set data.
9. A data transmission device is characterized in that the data transmission device is applied to a mobile field processing interface transmitter, the mobile field processing interface transmitter adopts MIPIDSI protocol, a display interface receiver stores received data into a memory in a data sending or reading mode according to the mobile field processing interface transmitter, the mobile field processing interface transmitter reads and sends the data from the memory, and protocol conversion among different protocol interfaces is realized on the premise of not needing encoding and decoding, and the device comprises:
a first reading unit configured to read the image parameter set data from the image parameter set memory; the image parameter set data is the image parameter set which is received by the display interface receiver from the display interface transmitter, is stored in the image parameter set memory according to the mode of transmitting the image parameter set data by the mobile field processing interface transmitter and compresses the display data;
a first sending unit, configured to send the image parameter set data read by the first reading unit to a data receiving end;
a second reading unit for reading the core data from the core data memory; the core data is the core data of the compressed data, which is received by the display interface receiver from the display interface transmitter and is stored in the core data memory according to the mode of reading the core data by the mobile field processing interface transmitter;
and the second sending unit is used for sending the core data read by the second reading unit to a data receiving end.
10. The apparatus of claim 9, further comprising:
and the parameter setting unit is used for configuring the parameters of the mobile domain processing interface transmitter according to the image parameter set data.
11. A data transmission system, comprising:
the display interface transmitter adopts a DP protocol, the mobile field processing interface transmitter adopts an MIPIDSI protocol, the display interface receiver stores received data into the memory in a data sending or reading mode of the mobile field processing interface transmitter, and the mobile field processing interface transmitter reads and sends the data from the memory, so that protocol conversion among different protocol interfaces is realized on the premise of not needing encoding and decoding;
the display interface receiver is connected with the memory and used for receiving compressed display data sent by the display interface transmitter; extracting core data sent by the display interface transmitter and image parameter set data sent by the display interface transmitter from the compressed display data sent by the display interface transmitter; storing the image parameter set data into an image parameter set memory according to a manner in which a mobile domain processing interface transmitter transmits the image parameter set data; storing the core data into a core data memory according to a mode of reading the core data by a mobile domain processing interface transmitter;
the memory is connected with the mobile domain processing interface transmitter and comprises a picture parameter set memory and a core data memory which are respectively used for storing picture parameter set data and core data;
the MOV processing interface transmitter is used for reading the image parameter set data from the image parameter set memory; sending the read image parameter set data to a data receiving end; reading core data from a core data memory; and sending the read core data to a data receiving end.
12. The system of claim 11, wherein the display interface receiver, when extracting the core data and the image parameter set from the compressed display data, is specifically configured to:
monitoring the received compressed display data stream; when the image parameter set data is monitored, extracting the monitored image parameter set data; when the core data is monitored, the monitored core data is extracted.
13. The system of claim 11, wherein the display interface receiver is further configured to:
and setting parameters of the display interface receiver according to the extracted image parameter set data.
14. The system of claim 11, wherein the mobile domain processing interface transmitter is further configured to:
and setting the parameters of the mobile field processing interface transmitter according to the read image parameter set data.
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