CN110312158B - Embedded multi-picture monitoring method and device - Google Patents
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N19/00—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
- H04N19/10—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding
- H04N19/169—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding characterised by the coding unit, i.e. the structural portion or semantic portion of the video signal being the object or the subject of the adaptive coding
- H04N19/186—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding characterised by the coding unit, i.e. the structural portion or semantic portion of the video signal being the object or the subject of the adaptive coding the unit being a colour or a chrominance component
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N19/00—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
- H04N19/42—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals characterised by implementation details or hardware specially adapted for video compression or decompression, e.g. dedicated software implementation
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- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
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- 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
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- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
- H04N21/438—Interfacing the downstream path of the transmission network originating from a server, e.g. retrieving encoded video stream packets from an IP network
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- H04N21/44—Processing of video elementary streams, e.g. splicing a video clip retrieved from local storage with an incoming video stream or rendering scenes according to encoded video stream scene graphs
- H04N21/4402—Processing of video elementary streams, e.g. splicing a video clip retrieved from local storage with an incoming video stream or rendering scenes according to encoded video stream scene graphs involving reformatting operations of video signals for household redistribution, storage or real-time display
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Abstract
The invention belongs to the field of audio and video monitoring of broadcast televisions, and particularly relates to an embedded multi-picture monitoring method and device. The embedded multi-picture monitoring method and device provided by the invention use a full embedded platform Haishi 3798cv200 high-definition set-top box chip as a core decoding display chip, which is a high-integration chip with high definition and fluency, and the chip per se ensures the picture quality and fluency. The invention adopts an enhanced form, consists of 4 blocks of 3798 decoding chips and is synthesized by FPGA pictures to be displayed on a screen, has strong audio and video processing capability and ultrahigh definition image quality, and makes up a series of problems of insufficient decoding performance and the like in the prior art. Meanwhile, the advantages of high stability and low cost brought by the fully-embedded system architecture are incomparable with other devices.
Description
Technical Field
The invention belongs to the field of audio and video monitoring of broadcast televisions, and particularly relates to an embedded multi-picture monitoring method and device.
Background
Interactive television is a television service which is gradually emerging after the conversion from analog television to digital television is completed, and is rapidly developed after the policy of three-network integration is released in the country in 2010. The cable digital television is developed from unidirectional broadcasting to bidirectional interactive transmission and operation modes, and the monitoring object of the digital television is correspondingly changed. The traditional monitoring is oriented to a broadcast mode, only channel transmission indexes, code stream indexes and content indexes are monitored, and the monitoring mode generally adopts special monitoring equipment to intensively collect part or all transmission frequencies and code streams in a wired network so as to complete the index monitoring. The bidirectional interactive television is an extension on the basis of unidirectional broadcast service, and in addition to the above monitoring requirements, the monitoring requirements for interactive television service are increased. The monitoring of the interactive television emphasizes the monitoring of the user experience, namely, the response time of the interactive instruction of the user, whether each interaction is successful, what the viewing experience is, and the like need to be monitored.
The interactive television watching process is initiated by a user through a set-top box, the watching process relates to a bidirectional interaction process of the set-top box and an interactive television front-end system, a stream pushing resource scheduling of the front-end system, stream pushing to the user set-top box through a unidirectional link and other complex processes, and whether the process is successful, the delay condition of each link and the picture quality received by the final user are all contents to be monitored by the interactive television monitoring system. The set-top box of the cable interactive television is general equipment for receiving by a user terminal and is used for meeting the watching requirements of users. In the cable interactive television set-top box, different set-top box hardware platforms, heterogeneous front-end systems and various set-top box application extensions can be effectively supported by adopting a middleware platform technology. Currently, middleware technology is commonly adopted in set top boxes.
The digital TV set-top box is a cable TV converting device, which is a converting device for converting digital TV signals into analog signals, and decodes and restores the image and sound signals after digital compression to generate analog video and sound signals, and provides high-quality TV programs for audiences through a TV display and a sound device. It adopts compatible method, and is continued to present in China.
However, with the continuous innovation of technology and the development of demand, the existing software architecture and product form have gradually no competitive advantages and some disadvantages are exposed, and some of them are very concerned by users. For example, the high definition and 4K decoding capabilities are not strong enough, the image quality is not clear enough, the subtitle playing is not smooth enough, the stability has some problems, and the cost is also quite high.
Disclosure of Invention
The application provides an embedded multi-picture monitoring method and device, which are used for solving the problems that in the prior art, a software architecture and a product form gradually have no competitive advantage and some defects are exposed, and some users are concerned about the method and device. For example, the high definition and 4K decoding capabilities are not strong enough, the image quality is not clear enough, the subtitle playing is not smooth enough, the stability has some problems, and the cost is also quite high.
Therefore, the invention provides the following technical scheme: an embedded multi-picture monitoring method comprises the following steps:
after the demodulation of the signals is finished by the demodulation equipment, TS code streams transmitted by using a UDP protocol are sent to four hi3798cv200 chips;
the four hi3798cv200 receive and decode the previous network TS stream;
carrying out information display through OSD;
after the decoder finishes decoding, pictures of the multi-path code streams are spliced and synthesized, and then are output to an HDMI data acquisition chip sil9293 through an HDMI output port according to the resolution of 1080P and the data format of YCbCr 444;
the HDMI data acquisition chip sil9293 finishes acquisition of HDMI data and conversion from YCbCr444 to RGB data;
the FPGA at the later stage receives the four paths of RGB data, synthesizes the RGB data into one path of data and outputs the data to the HDMI output chip sil 9022;
the HDMI output chip sil9022 finishes the acquisition of RGB data and simultaneously finishes the conversion from the RGB data to YCbCr 444;
the HDMI output chip outputs the HDMI output chip to a screen;
the program running on the hi3798cv200 reports the monitoring result to the agent alarm server;
and the agent alarm server sends information to the demon warehousing system.
Further, the demodulation apparatus includes QA68, DT56, SD 29.
Further, the signals comprise QAM, DTMB and SDI.
Further, after the step 'the agent alarm server sends information to the demon warehousing system', the method further comprises the steps of: the presentation is queried through the unified management software platform DM 4.
An embedded multi-picture monitoring device comprises a device case; a PCB is arranged in the case, and the PCB is formed by four hi3798cv200 decoding board cards and an FPGA synthesis board card; the four hi3798cv200 decoding board cards and the FPGA synthesis board card are inserted in a front-back opposite insertion mode, and the four hi3798cv200 decoding board cards and the FPGA synthesis board card are communicated in a back board connector mode.
Furthermore, the backplane connector is a 60pin connector for transmitting HDMI signals, and a 110pin connector for transmitting 2 groups of gigabit network signals and IIC, and debugging serial port signals.
Further, the four hi3798cv200 decoding board card panels comprise a liquid crystal module.
Furthermore, the FPGA composite board card panel comprises two HDMI output interfaces, three RJ45 gigabit network ports, two RS232 serial ports and a code broadcasting switch; and two of the three RJ45 gigabit network ports are used for a decoding module to receive a code stream interface, and one of the three RJ45 gigabit network ports is used for a Hi3516 coding output interface.
Further, the code playing switch is used for selecting the debugging serial port of the Hi 3798.
The technical scheme provided by the application comprises the following beneficial technical effects: the embedded multi-picture monitoring method and device provided by the invention use a full embedded platform Haishi 3798cv200 high-definition set-top box chip as a core decoding display chip, which is a high-integration chip with high definition and fluency, and the chip per se ensures the picture quality and fluency. The invention adopts an enhanced form, consists of 4 blocks of 3798 decoding chips and is synthesized by FPGA pictures to be displayed on a screen, has strong audio and video processing capability and ultrahigh definition image quality, and makes up a series of problems of insufficient decoding performance and the like in the prior art. Meanwhile, the advantages of high stability and low cost brought by the fully-embedded system architecture are incomparable with other devices.
Drawings
In order to more clearly explain the technical solution of the present application, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious to those skilled in the art that other drawings can be obtained according to the drawings without any creative effort.
Fig. 1 is a schematic structural diagram of an embedded multi-screen monitoring device according to an embodiment of the present disclosure.
Fig. 2 is a functional block diagram of a decoding board card of an embedded multi-picture monitoring device according to an embodiment of the present disclosure.
Fig. 3 is a schematic diagram illustrating a picture splicing principle and a display principle of an embedded multi-picture monitoring method according to an embodiment of the present application.
Fig. 4 is a schematic diagram of a hardware structure of an embedded multi-screen monitoring device according to an embodiment of the present disclosure.
Detailed Description
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present application and together with the description, serve to explain the principles of the application.
In order to more clearly illustrate the embodiments of the present application 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, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.
Example one
An embedded multi-picture monitoring method comprises the following steps:
after the demodulation of the signals is finished by the demodulation equipment, TS code streams transmitted by using a UDP protocol are sent to four hi3798cv200 chips;
the four hi3798cv200 receive and decode the previous network TS stream;
carrying out information display through OSD;
after the decoder finishes decoding, pictures of the multi-path code streams are spliced and synthesized, and then are output to an HDMI data acquisition chip sil9293 through an HDMI output port according to the resolution of 1080P and the data format of YCbCr 444;
the HDMI data acquisition chip sil9293 finishes acquisition of HDMI data and conversion from YCbCr444 to RGB data;
the later-stage FPGA receives the four paths of RGB data, synthesizes the four paths of RGB data into one path of data and outputs the data to an HDMI output chip sil 9022;
the HDMI output chip sil9022 finishes the acquisition of RGB data and simultaneously finishes the conversion from the RGB data to YCbCr 444;
the HDMI output chip outputs the HDMI output chip to a screen;
the program running on the hi3798cv200 reports the monitoring result to the agent alarm server;
and the agent alarm server sends information to the demon warehousing system.
As a great improvement of the technical scheme of the embodiment, the demodulation equipment comprises QA68, DT56 and SD 29.
As a great improvement of the technical scheme of the embodiment, the signals comprise QAM, DTMB and SDI.
As a great improvement of the technical solution of this embodiment, after the step of sending information to the demon warehousing system by the agent alarm server, the method further includes the steps of: the presentation is queried through the unified management software platform DM 4.
Specifically, the DM4(Display Manager 4.0) is platform software that uniformly manages boards, and is displayed in the form of web pages, and functions of the platform software include detecting boards, signal management, layout, and other configuration management and alarm information query.
The working principle of the method provided by the embodiment is as follows: as shown in fig. 3, which is a schematic diagram of a picture splicing principle, the current FPGA design can support two HDMI outputs, that is, 4 inputs are randomly allocated to the two screens according to user configuration. An input can only be assigned to one output and cannot be assigned to two outputs simultaneously.
In order to fully exert the high-definition video processing capacity of the 3798 chip, the scaling and layout after video decoding are still controlled by the 3798 chip, so that on one hand, the high-definition image quality advantage of the Haisi chip can be fully exerted, and the high-definition image quality is ensured not to be reduced due to the subsequent FPGA reprocessing. On the other hand, the FPGA saves complex algorithm design and reduces development time and difficulty. Meanwhile, the system is more stable and operates efficiently.
Each module first determines the coordinates of the respective video window, including the top left start X, the top left start Y, the window length and width, according to the configuration. The setting of the position of the video window is simple, and the four parameters can be effective on HDMI output as long as the four parameters are set to the Haisi bottom layer interface. Next, the corresponding coordinates are configured to the register of the FPGA through the IIC, and one 9293 read-write register is enabled to be effective.
It should be noted that these windows cannot be overlapped, and the FPGA does not check and process the overlapped windows. The areas of the modules without video windows are all black.
In summary, compared with the prior art, the improvement point of the method provided by the present embodiment is shown in the following table:
example two
As shown in fig. 1, an embedded multi-screen monitoring device includes a device case; a PCB is arranged in the case, and the PCB is formed by four hi3798cv200 decoding board cards and an FPGA synthesis board card; the four hi3798cv200 decoding board cards and the FPGA synthesis board card are inserted in a front-back opposite insertion mode, and the four hi3798cv200 decoding board cards and the FPGA synthesis board card are communicated in a back board connector mode.
As a great improvement of the technical solution of this embodiment, the backplane connector is a 60pin connector for transmitting HDMI signals, and a 110pin connector for transmitting 2 groups of gigabit network signals and IIC, and debugging serial signals.
As a great improvement of the technical solution of this embodiment, the four hi3798cv200 decoding board card panels include a liquid crystal module.
As a great improvement of the technical scheme of the embodiment, the FPGA composite board card panel comprises two HDMI output interfaces, three RJ45 gigabit ports, two RS232 serial ports and a code broadcasting switch; and two of the three RJ45 gigabit network ports are used for a decoding module to receive a code stream interface, and one of the three RJ45 gigabit network ports is used for a Hi3516 coding output interface.
As a great improvement of the technical solution of this embodiment, the one code broadcasting switch is used to select the debugging serial port of Hi 3798.
As shown in fig. 2, a functional block diagram of the hi3798cv200 decoding board card is introduced as follows:
(1) and the method relates to 64-path audio and video decoding, adopts an exchange chip to realize the receiving of the TS code stream transmitted by using a UDP protocol, distributes the TS code stream to 4 Hi3798Cv200 decoding chips, and starts multicast maintenance.
(2) In order to improve the image output quality, the FPGA only performs image cutting and splicing functions, and the output resolution and the frame rate of the four Hi3798Cv200 HDMI are consistent.
(3) Considering cost factors, Hi3798Cv200, the maximum HDMI output support 1080P60, the FPGA finishes picture cutting and synthesis, the HDMI output supports 1080P60 resolution, and the down compatibility is realized.
Specifically, as shown in fig. 4, since the device provided in this embodiment uses four 3798 haisi HI3798c200 main chip modules, each decoding path is 16, and the total path is 64, each 3798 module outputs to the FPGA at the subsequent stage through 1080P HDMI signals, and the FPGA synthesizes 4 HDMI signals into 1 path of 1080P HDMI signals and outputs the signals to the screen. Therefore, a 1080P screen is achieved, more paths of videos are decoded as much as possible, powerful video decoding processing capacity is embodied, and precious display resources are saved.
Specifically, the four 3798 receive the previous network TS stream, decode it, display it with OSD information, output the data of 1080P + YCbCr444 to an HDMI data acquisition chip-sil 9293 through HDMI output port, which finishes the acquisition of HDMI data and conversion from YCbCr444 to RGB data. The FPGA at the later stage receives four paths of RGB data, synthesizes the RGB data into one path of data, and outputs the data to an HDMI output chip-sil 9022, the chip finishes the acquisition of the RGB data and the conversion of the RGB data to YCbCr444, and finally the RGB data are output to a screen through the HDMI.
In summary, the apparatus provided in this embodiment uses the fully embedded platform-haisi hi3798cv200 high-definition set-top box chip as the core decoding display chip, which is a high-integration chip with high definition and fluency, and the chip itself has ensured image quality and fluency. One form of the product consists of 4 blocks of 3798 decoding chips, and the FPGA picture is synthesized to be displayed on a screen, so that the product has strong audio and video processing capability and ultra-high definition image quality, and a series of problems of insufficient decoding performance and the like existing in the prior display are solved. Meanwhile, the advantages of high stability and low cost brought by the fully-embedded system architecture are incomparable with other devices.
It is noted that relational terms such as "first" and "second," and the like, may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that an article or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
The above description is merely exemplary of the present application and is presented to enable those skilled in the art to understand and practice the present application. 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 application. Thus, the present application 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.
It will be understood that the present application is not limited to what has been described above and shown in the accompanying drawings, and that various modifications and changes can be made without departing from the scope thereof. The scope of the application is limited only by the appended claims.
Claims (9)
1. An embedded multi-picture monitoring method is characterized by comprising the following steps:
after the demodulation of the signals is finished by the demodulation equipment, TS code streams transmitted by using a UDP protocol are sent to four hi3798cv200 chips;
the four hi3798cv200 receive and decode the previous network TS stream;
carrying out information display through OSD;
after the decoder finishes decoding, pictures of the multi-path code streams are spliced and synthesized, and then are output to an HDMI data acquisition chip sil9293 through an HDMI output port according to the resolution of 1080P and the data format of YCbCr 444;
the HDMI data acquisition chip sil9293 finishes acquisition of HDMI data and conversion from YCbCr444 to RGB data;
the FPGA at the later stage receives the four paths of RGB data, synthesizes the RGB data into one path of data and outputs the data to the HDMI output chip sil 9022;
the HDMI output chip sil9022 finishes the acquisition of RGB data and simultaneously finishes the conversion from the RGB data to YCbCr 444;
the HDMI output chip outputs the HDMI output chip to a screen;
the program running on the hi3798cv200 reports the monitoring result to the agent alarm server;
and the agent alarm server sends information to the demon warehousing system.
2. The embedded multivision monitoring method of claim 1, wherein the demodulation device comprises QA68, DT56, SD 29.
3. The method of claim 1, wherein the signal comprises QAM, DTMB, SDI.
4. The method for monitoring embedded multi-pictures according to claim 1, wherein: the step of sending information to the demon warehousing system by the agent alarm server further comprises the following steps: the presentation is queried through the unified management software platform DM 4.
5. An embedded multi-picture monitoring device, characterized in that the device adopts the monitoring method as claimed in any one of claims 1-4, and the device comprises a device case; a PCB is arranged in the case, and the PCB is formed by four hi3798cv200 decoding board cards and an FPGA synthesis board card; the four hi3798cv200 decoding board cards and the FPGA synthesis board card are inserted in a front-back opposite insertion mode, and the four hi3798cv200 decoding board cards and the FPGA synthesis board card are communicated in a back board connector mode;
the hi3798cv200 decoding board card is used for executing the following steps:
receiving and decoding a network TS stream; wherein the network TS stream is transmitted by using UDP protocol after the demodulation of the signal is completed by the demodulation equipment;
carrying out information display through OSD;
after the decoder finishes decoding, pictures of the multi-path code streams are spliced and synthesized, and then are output to an HDMI data acquisition chip sil9293 through an HDMI output port according to the resolution of 1080P and the data format of YCbCr 444;
reporting the monitoring result to an agent alarm server; the agent alarm server is used for sending information to the demon warehousing system;
the FPGA synthesis board card is used for executing the following steps:
the HDMI data acquisition chip sil9293 finishes acquisition of HDMI data and conversion from YCbCr444 to RGB data;
the FPGA at the later stage receives the four paths of RGB data, synthesizes the RGB data into one path of data and outputs the data to the HDMI output chip sil 9022;
the HDMI output chip sil9022 finishes the acquisition of RGB data and simultaneously finishes the conversion from the RGB data to YCbCr 444;
the HDMI output chip outputs the HDMI signal to a screen.
6. The embedded multi-picture monitoring device according to claim 5, wherein the backplane connector is a 60pin connector for transmitting HDMI signals, and a 110pin connector for transmitting 2 groups of gigabit network signals and IIC, and debugging serial signals.
7. The embedded multi-picture monitoring device as claimed in claim 5, wherein the four hi3798cv200 decoding board card panels comprise a liquid crystal module.
8. The embedded multi-picture monitoring device according to claim 5, wherein the FPGA composite board panel comprises two HDMI output interfaces, three RJ45 gigabit ports, two RS232 serial ports and a code broadcasting switch; and two of the three RJ45 gigabit network ports are used for a decoding module to receive a code stream interface, and one of the three RJ45 gigabit network ports is used for a Hi3516 coding output interface.
9. The embedded multi-picture monitoring device as claimed in claim 8, wherein said one code-playing switch is used to select a debugging serial port of Hi 3798.
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2018
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