CN112929671A - A transcoding device and cable digital television signal supervisory equipment for audio frequency and video - Google Patents
A transcoding device and cable digital television signal supervisory equipment for audio frequency and video Download PDFInfo
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- CN112929671A CN112929671A CN202110348454.8A CN202110348454A CN112929671A CN 112929671 A CN112929671 A CN 112929671A CN 202110348454 A CN202110348454 A CN 202110348454A CN 112929671 A CN112929671 A CN 112929671A
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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
- H04N19/40—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using video transcoding, i.e. partial or full decoding of a coded input stream followed by re-encoding of the decoded output stream
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N17/00—Diagnosis, testing or measuring for television systems or their details
- H04N17/004—Diagnosis, testing or measuring for television systems or their details for digital television systems
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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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Abstract
The invention discloses a transcoding device for audio and video and cable digital television signal monitoring equipment, wherein the transcoding device for audio and video comprises: the board card is provided with a pulling aid and a transcoding device information two-dimensional code; the transcoding cards are distributed on the board card in a layered mode and are used for converting audio and video coding formats in real time and returning converted data; the switching chips are arranged on the board card, and part of the switching chips are connected with the transcoding card and used for monitoring and analyzing the content of the video and audio data; a plurality of dial switch sets up on the integrated circuit board, and dial switch is connected with the transcoding card, through stirring different dial switch to appointed arbitrary one or a plurality of transcoding card operation. The audio and video transcoding device provided by the invention has higher integration level, and the transcoding cards are arranged in a layered manner, so that more transcoding modules and switching chips are integrated in a smaller space, and the audio and video transcoding device has stronger performance, richer functions and higher stability.
Description
Technical Field
The invention relates to the technical field of audio and video coding format transcoding, in particular to a transcoding device for audio and video and cable digital television signal monitoring equipment.
Background
The national broadcast television central office continues to advance the digitization process of the broadcast television, and the cable digital television signal transmission of various provinces and cities is basically realized in a full coverage manner at present. Each local station and network company must not only transmit the digital program of the central program, but also transmit the local satellite and city self-made programs. In order to meet the monitoring requirements of a supervision center on television programs of various regions, wired digital monitoring equipment needs to be distributed on station stations of various regions, recording, returning and quality monitoring of the programs are carried out by the wired digital monitoring equipment, a transcoding device needs to be used for coding, decoding and format conversion of program code streams, and the traditional transcoding card is not enough to bear the tasks along with the increase of the number of the monitored programs and the increasing requirements on high-definition and 4K program monitoring. Therefore, it is necessary to develop a new transcoding device for audio and video and a cable digital television signal monitoring device.
Disclosure of Invention
Objects of the invention
The invention aims to provide a transcoding device for audio and video and cable digital television signal monitoring equipment for transcoding audio and video programs, detecting the content of the audio and video programs, analyzing the content, monitoring the content, and acquiring and returning the content of the audio and video programs.
(II) technical scheme
To solve the above problem, a first aspect of the present invention provides a transcoding apparatus for audio and video, including: the board card is provided with a pulling aid and a transcoding device information two-dimensional code; the transcoding cards are distributed on the board card in a layered mode and are used for converting audio and video coding formats in real time and returning converted data; the switching chips are arranged on the board card, and part of the switching chips are connected with the transcoding card and used for monitoring and analyzing the content of the video and audio data; and the dial switches are arranged on the board card and connected with the transcoding card, and the dial switches are different in poking so as to designate any one or more transcoding cards to operate.
Furthermore, twelve transcoding cards are arranged; twelve transcoding cards are divided into two layers and arranged on the board card, and each layer is provided with six transcoding cards.
Further, six exchange chips are arranged; the two exchange chips are used for controlling data interaction of the transcoding card; the three exchange chips are respectively connected with the four transcoding cards and used for controlling the transcoding cards; and one switching chip is used for the transcoding card to collect data and transmit the data to a specified network port.
Further, still include: and the cooling fin covers the transcoding card and the board card and is used for cooling the transcoding card, and the cooling fin is matched with the size and the dimension of the board card.
Furthermore, two pulling-out aids are arranged and are oppositely arranged at the edge of the board card.
Furthermore, a reset key is also arranged on the board card; the reset key is used for resetting the transcoding device.
Further, still include: the debugging interface is used for carrying out software debugging on the appointed transcoding card;
further, the board card adopts a 6U standard CPCI structural design.
Further, still include: and the two Ethernet interfaces are used for outwards transmitting the data processed by the switching chip and receiving the data transmitted to the switching chip from the outside.
A second aspect of the present invention provides a cable digital television signal monitoring apparatus, comprising: the transcoding device of any one of the first aspect of the invention; the case is provided with a transcoding device mounting groove and used for mounting the transcoding device; the case is provided with a first number; the transcoding device mounting groove is provided with a second serial number; the transcoding card of each transcoding device is provided with a third number; and determining the physical IP of each transcoding card through the first number, the second number and the third number.
(III) advantageous effects
The technical scheme of the invention has the following beneficial technical effects:
the audio and video transcoding device provided by the invention has higher integration level, the transcoding cards are arranged in a layered manner, so that more transcoding modules and switching chips are integrated in a smaller space, the audio and video transcoding device has stronger performance, richer functions and higher stability, can simultaneously perform coding format conversion and program content acquisition and monitoring on more audio and video, and simultaneously supports more audio and video coding formats.
Drawings
Fig. 1 is a schematic structural diagram of a transcoding device for audio and video in an embodiment of the present invention;
FIG. 2 is a schematic structural diagram of an extraction aid according to an embodiment of the present invention;
fig. 3 is a schematic diagram of a connection structure between a board card and a transcoding card in the embodiment of the present invention;
FIG. 4 is a side view of FIG. 3;
fig. 5 is a schematic structural diagram of a transcoding apparatus for audio and video in an embodiment of the present invention.
Reference numerals:
1: a board card; 11: transcoding the device information two-dimensional code; 12, a reset key; 13, debugging an interface; 14, a power supply indicator light; 15: an operating status light; 2: a pulling aid; 3: transcoding card; 4: a dial switch.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in further detail with reference to the accompanying drawings in conjunction with the following detailed description. It should be understood that the description is intended to be exemplary only, and is not intended to limit the scope of the present invention. Moreover, in the following description, descriptions of well-known structures and techniques are omitted so as to not unnecessarily obscure the concepts of the present invention.
The terms "including" and "having," and any variations thereof, in the description and claims of this invention and the above-described drawings are intended to cover non-exclusive inclusions. For example, a process, method, system, article, or apparatus that comprises a list of steps or elements is not limited to only those steps or elements listed, but may alternatively include other steps or elements not listed, or inherent to such process, method, article, or apparatus.
Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the invention. The appearances of the phrase in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. It is explicitly and implicitly understood by one skilled in the art that the embodiments described herein can be combined with other embodiments.
It is to be understood that the embodiments described are only a few embodiments of the present invention, and not all 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. In addition, the technical features involved in the different embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other. The invention will be described in more detail below with reference to the accompanying drawings. Like elements in the various figures are denoted by like reference numerals. For purposes of clarity, the various features in the drawings are not necessarily drawn to scale.
In addition, the technical features involved in the different embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.
The FPGA is short for Field-Programmable Gate Array, which means a Field-Programmable Gate Array.
LVDS is short for LowVoltage Differential Signaling, meaning low voltage Differential Signaling.
Fig. 1 is a schematic structural diagram of a transcoding device for audio and video in an embodiment of the present invention.
Fig. 2 is a schematic structural diagram of the extraction aid in the embodiment of the invention.
Fig. 3 is a schematic diagram of a connection structure between a board card and a transcoding card in the embodiment of the present invention.
Fig. 4 is a side view of fig. 3.
In a first embodiment of the present invention, as shown in fig. 1 to 4, a transcoding device for audio and video is provided, which mainly includes a board card 1, and the board card 1 is provided with a plug-in unit 2, a transcoding device information two-dimensional code 11, a plurality of transcoding cards 3, a plurality of switching chips, and a plurality of dial switches 4. The plurality of transcoding cards 3 are distributed on the board card 1 in a layered manner and are used for real-time conversion between audio and video coding formats and returning converted data; the partial exchange chip is connected with the transcoding card 3 and is used for monitoring and analyzing the content of the video and audio data; a plurality of dial switches 4 are connected with transcoding cards 3, and different dial switches 4 are toggled to designate any one or more transcoding cards 3 to operate.
In some embodiments, the board card 1 is further provided with a power indicator lamp 14 and an operation status lamp 15; the power indicator lamp 14 is used for displaying the power-on state of the transcoding card 3; the operation state lamp 15 is used for displaying the working state of the transcoding card 3.
In some embodiments, the switching chip is an FPGA chip, and is soldered on the board card 1 to perform acquisition and analysis and data exchange on the content level of the audio/video program.
In some embodiments, the transcoding device is provided with twelve transcoding cards 3; twelve transcoding cards 3 are divided into two layers and arranged on the board card 1, and each layer is provided with six transcoding cards 3, wherein the two layers of transcoding cards 3 can be arranged according to scales.
The transcoding cards 3 are mainly used for converting the coding formats of the audio and video programs, and specifically, each transcoding card 3 can independently complete the conversion from the audio MP2/AC3/DRA/AAC/EAC3 to the AAC coding format; the conversion of video AVS +/AVS/H264/H265/MPEG2 to H264 or H265 coding format can be completed.
The maximum transcoding capacity of the audio and video transcoding device can support 72-channel H264 standard definition coding format conversion, or can support 72-channel H264 high definition coding format conversion, or can support 24-channel H264 ultrahigh definition coding format conversion. The transcoding card 3 can process the multicast stream in the TS over IP format, and perform encoding processing according to the specified resolution, frame rate, code rate, and osd (on Screen display) characters, and the output data of the transcoding card can support the current mainstream multimedia protocol playing terminal.
In some embodiments, the transcoding device is provided with six switching chips; the two exchange chips are used for controlling data interaction of the transcoding card 3; the three exchange chips are respectively connected with the four transcoding cards 3 and used for controlling the transcoding cards 3; and one switching chip is used for the transcoding card 3 to summarize data and transmit the data to a specified network port.
In some embodiments, the transcoding device further comprises a heat sink covering the transcoding card 3 and the board 1 for dissipating heat from the transcoding card 3, wherein the heat sink is adapted to the size and dimension of the board 1.
In some embodiments, two extraction aids 2 are provided, the two extraction aids 2 are oppositely arranged at the edge of the board card 1, and the extraction aids are designed according to IEC60297 specification.
In some embodiments, the board card 1 is further provided with a reset key 12; the reset key 12 is used to reset the transcoding device. When the board card 1 is in an abnormal state, the reset key 12 can be pressed, and the transcoding device can be reset.
In some embodiments, the transcoding device further comprises a debugging interface 13 for performing software debugging on the specified transcoding card 3; when the transcoding device does not operate according to the preset program or the preset program of the transcoding device is not tried, the data debugging of the transcoding device can be carried out through the debugging interface 13
In some embodiments, the board 1 is a PCB motherboard designed using a 6U standard CPCI structure.
In some embodiments, the transcoding device further includes two ethernet interfaces for transmitting and receiving data processed by the switch chip to and from the switch chip.
Fig. 5 is a schematic structural diagram of a transcoding apparatus for audio and video in an embodiment of the present invention.
In a specific embodiment, as shown in fig. 1 to 5, a power indicator 14 (marked with PWR), an operation status light 15 (marked with RUN), a transcoding device information two-dimensional code 11 and a reset key 12 are disposed on one surface of the board 1 on which the reset key 12 is disposed. When the power indicator lamp 14 is turned on, the transcoding card 3 is indicated to be powered on; when the power indicator lamp 14 is turned off, the transcoding card 3 is not electrified; when the running state lamp 15 is on, the transcoding card 3 is indicated to be in a running state; when the running state lamp 15 is turned off, the transcoding card 3 is indicated to be not running; basic information of the transcoding device can be acquired by scanning the transcoding device information two-dimensional code 11. The basic information of the transcoding device comprises piece information, a serial number and factory time information, components of the transcoding device, the size and the model of the transcoding device and the components, the running state of the transcoding device, running record, early warning information and the like. The transcoding device information two-dimensional code 11 adopts a printing and sticking mode and is made of matte PET adhesive label paper. The transcoding device can be reset by continuously pressing the reset key 12 for 10 seconds when the transcoding device has an operation state failure.
Four dial switches 4 are arranged on the transcoding card 3, one transcoding card 3 is selected through different switch combinations, and debugging is carried out by matching with the debugging interface 13.
The two Ethernet interfaces are a transmission Ethernet interface and a receiving Ethernet interface, and the transmission Ethernet interface is used for transmitting data processed by the exchange chip outwards; the receiving Ethernet interface is used for receiving data transmitted to the switching chip from the outside; the transmission Ethernet interface and the receiving Ethernet interface are connected with the CPCI, and data processed by the switching chip or data transmitted to the switching chip from the outside are transmitted through the CPCI; the transcoding device also comprises a data monitoring interface which can be an RJ45 interface.
The transcoding card 3 may adopt an embedded processor to receive the video IP signal and the live stream output by the descrambling module, and convert the video IP signal and the live stream into a streaming media protocol for providing the most popular terminal currently for various video signals such as DTV (broadcast television), OTT (internet television), IPTV, Mobile TV (Mobile television), VOD, etc., including multiple compression formats, multiple packing modes, multiple resolutions, etc., and perform corresponding encoding processing. The transcoding card 3 takes an FPGA chip as a central data routing link. The FPGA chip can respond to the instruction requirement of the main control card of the front-end equipment in real time, and carries out transcoding, content detection and content analysis on the multi-channel audio and video high-definition program content so as to complete the functions of audio and video program content monitoring and audio and video program content acquisition, return and real-time video recording.
The FPGA chip is used for system control and data processing, and can perform real-time and high-efficiency parallel computation. The FPGA chip can receive unprocessed original audio and video data of a CCIR656 standard, the data is decoded by a decoder to obtain YUV data and is input into a DDR SDRAM through FIFO cache to be stored, and the FPGA data processing module sequentially takes out the data from the DDR SDRAM and carries out operations such as frame rate conversion, color space conversion, video scaling and the like according to preset reading code rate, frame rate, resolution and characters. And meanwhile, the switching chip acquires the data of static pictures, audio data loss, video data loss and video black edge fault on the program content level and reports the data to the monitoring center in real time, so that the monitoring of the cable digital television signal is realized. The FPGA chip comprises an input processing module, a data processing module and an output processing module. The FPGA input processing module can receive data in a standard CCIR656 uncompressed digital video format, then detects a line head mark and a frame head mark of a video according to the CCIR656 definition, and stores the data into a frame address corresponding to the SDRAM according to the line position; the data processing module configures parameters of video frame rate and resolution according to system requirements, calls data in the SDRAM to process the data according to the configured frame rate and resolution, and stores output data results into corresponding output video buffer areas; the output processing module extracts data from the output video buffer area according to the configured frame rate and resolution, constructs an output video frame format, and outputs the data after outputting a line head mark, a frame head mark, blanking data and the like. The FPGA adjusts the frame rate and the resolution of the video according to set parameters so as to obtain a low frame rate and a low resolution, video data processed by the FPGA is transmitted to a video-audio encoder, a compressed data code stream generated by the video-audio encoder is processed by an embedded CPU and then is sent to a network platform of a monitoring system as monitoring data to be checked, stored in a network and played back, so that monitoring of the whole digital television system is realized, and the monitoring and monitoring are realized, so that the monitoring and monitoring of the whole digital television system are realized, and the monitoring and monitoring of the digital television system are realized, and the monitoring and monitoring of black field alarm, static frame alarm, video loss alarm, color bar alarm, color field alarm, decoding abnormity alarm, audio loss alarm, over.
The transcoding device transmits the transcoded data to a wide area network user terminal or a local area network user terminal through the CPCI; the wide area network user terminal may include, but is not limited to: VR integrated machine (Virtual Reality All-in-one Headset), mobile phone, tablet computer, MAC computer, notebook computer, desktop computer, etc.; the local area network user terminal may include, but is not limited to: VR All-in-one Headset, mobile phone, tablet computer, MAC computer, notebook computer, desktop computer, etc.
A second aspect of the present invention provides a cable digital television signal monitoring apparatus, including the transcoding device and the enclosure of any one of the first aspect of the present invention. The transcoding device is arranged in the case, specifically, the case is provided with a transcoding device mounting groove for mounting the transcoding device, and the transcoding device is connected with the transcoding device mounting groove through the pulling aid 2.
The case is provided with a first number; the transcoding device mounting groove is provided with a second serial number; the transcoding card 4 of each transcoding device is provided with a third number; and determining the physical IP of each transcoding card through the first number, the second number and the third number. The physical IP of each transcoding card 4 may be determined by a combination of the first number + the second number + the third number, and a specific determination manner of the physical IP is not limited.
In the exemplary embodiment, based on the foregoing embodiments, the first number of the chassis is A1, the second number of the transcoding device installation groove is B2, and the third numbers of the twelve transcoding cards 4 of the transcoding device are C31, C32, C33, C34, C35, C36, C37, C38, C39, C310, C311, and C312, respectively, in this order, then the physical IPs of the twelve transcoding cards 4 are A1B2C31, A1B2C32, A1B2C33, A1B2C34, A1B2C35, A1B2C36, A1B2C37, A1B2C38, A1B2C39, A1B2C310, A1B2C311, and A1B2C312, respectively.
The technical scheme of the invention has the following beneficial technical effects:
the audio and video transcoding device provided by the invention has higher integration level, the transcoding cards 3 are arranged in a layered manner, so that more transcoding modules and switching chips are integrated in a smaller space, the audio and video transcoding device has stronger performance, richer functions and higher stability, can simultaneously convert the coding formats of more audios and videos and acquire and monitor the program content, and simultaneously supports more audio and video coding formats.
It is to be understood that the above-described embodiments of the present invention are merely illustrative of or explaining the principles of the invention and are not to be construed as limiting the invention. Therefore, any modification, equivalent replacement, improvement and the like made without departing from the spirit and scope of the present invention should be included in the protection scope of the present invention. Further, it is intended that the appended claims cover all such variations and modifications as fall within the scope and boundaries of the appended claims or the equivalents of such scope and boundaries.
Claims (10)
1. A transcoding apparatus for audio and video, comprising:
the board card (1) is provided with a pulling aid (2) and a transcoding device information two-dimensional code (11);
the transcoding cards (3) are distributed on the board card (1) in a layered mode and are used for converting audio and video coding formats in real time and returning converted data;
the switching chips are arranged on the board card (1), and part of the switching chips are connected with the transcoding card (3) and used for monitoring and analyzing the content of the video and audio data;
a plurality of dial switches (4) set up on integrated circuit board (1), dial switch (4) with transcoding card (3) are connected, through stirring the difference dial switch (4) with appointed arbitrary one or more transcoding card (3) operation.
2. The transcoding device of claim 1,
twelve transcoding cards (3) are arranged;
twelve transcoding cards (3) are divided into two layers and arranged on the board card (1), and each layer is provided with six transcoding cards (3).
3. The transcoding device of claim 1,
six exchange chips are arranged; wherein the content of the first and second substances,
the two exchange chips are used for controlling data interaction of the transcoding card (3);
the three exchange chips are respectively connected with the four transcoding cards (3) and are used for controlling the transcoding cards (3);
and one switching chip is used for the transcoding card (3) to collect data and transmit the data to a specified network port.
4. The transcoding device of any one of claims 1 to 3, further comprising:
the cooling fin covers transcoding card (3) with integrated circuit board (1), is used for to transcoding card (3) heat dissipation, just the cooling fin with integrated circuit board (1) size and size looks adaptation.
5. The transcoding device of claim 1,
the card pulling assisting device is provided with two card pulling assisting devices (2), wherein the two card pulling assisting devices (2) are oppositely arranged on the edge of the card (1).
6. The transcoding device according to claim 1, wherein a reset key (12) is further arranged on the board (1);
the reset key (12) is used for resetting the transcoding device.
7. The transcoding device of claim 1, further comprising:
and the debugging interface (13) is used for carrying out software debugging on the specified transcoding card (3).
8. The transcoding device of claim 1,
the board card (1) is designed by adopting a 6U standard CPCI structure.
9. The transcoding device of claim 1, further comprising:
and the two Ethernet interfaces are used for outwards transmitting the data processed by the switching chip and receiving the data transmitted to the switching chip from the outside.
10. A cable digital television signal monitoring apparatus, comprising: the transcoding device of any one of claims 1-9;
the case is provided with a transcoding device mounting groove and used for mounting the transcoding device; wherein the content of the first and second substances,
the case is provided with a first number;
the transcoding device mounting groove is provided with a second serial number;
a third serial number is arranged on the transcoding card (3) of each transcoding device;
and determining the physical IP of each transcoding card (3) through the first number, the second number and the third number.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110348454.8A CN112929671A (en) | 2021-03-31 | 2021-03-31 | A transcoding device and cable digital television signal supervisory equipment for audio frequency and video |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110348454.8A CN112929671A (en) | 2021-03-31 | 2021-03-31 | A transcoding device and cable digital television signal supervisory equipment for audio frequency and video |
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| CN112929671A true CN112929671A (en) | 2021-06-08 |
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| CN202110348454.8A Pending CN112929671A (en) | 2021-03-31 | 2021-03-31 | A transcoding device and cable digital television signal supervisory equipment for audio frequency and video |
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