CN211239991U - Multi-system multi-channel transcoding device - Google Patents
Multi-system multi-channel transcoding device Download PDFInfo
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- CN211239991U CN211239991U CN201922475598.0U CN201922475598U CN211239991U CN 211239991 U CN211239991 U CN 211239991U CN 201922475598 U CN201922475598 U CN 201922475598U CN 211239991 U CN211239991 U CN 211239991U
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Abstract
The utility model relates to a multi-standard multichannel transcoding device belongs to internet technical field, has solved the problem that current transcoding device is bulky, business capacity expansibility is poor. The device comprises a CPCI carrier plate, a plurality of code conversion plates and a CPCI connector; the CPCI connector is connected to one side of the CPCI carrier plate in a crimping mode; the CPCI carrier plate is provided with N groups of first network transformers and network switching chips which are sequentially connected, and each first network transformer is electrically connected with the CPCI connector; the plurality of code transfer plates are stacked in a multilayer mode, and each layer is parallel to the CPCI carrier plate; the plurality of transcoding plates are divided into N groups, and one group of transcoding plates are electrically connected with one network switching chip on the CPCI carrier plate through a high-speed connector and used for receiving external data transmitted by any one network switching chip and transcoding the external data; wherein N is more than or equal to 1. The device has the advantages of small volume, high integration level and strong service capacity expansion capability.
Description
Technical Field
The utility model relates to the field of internet technology, especially, relate to a multi-standard multichannel transcoding device.
Background
The network audio and video is a product combining a multimedia technology and an internet technology, multimedia audio and video content on the network is compressed and encoded by an algorithm and then transmitted in a basic data stream form, a specific network control and auxiliary protocol is matched, a buffering technology is utilized, uninterrupted real-time sequential playing is realized under the condition that a client side only acquires partial data, and the network audio and video is used as a new network technology and covers a plurality of aspects of data acquisition, audio and video encoding, decoding, storage, transmission, playing and the like.
Most of traditional audio and video coding and decoding equipment based on network transmission is in a form of a complete machine which is erected, and the audio and video transcoding equipment in the structural form is large in size and poor in transcoding service capacity expansion capability, so that the requirements of embedded application occasions with small size and high transcoding service capacity cannot be met.
SUMMERY OF THE UTILITY MODEL
In view of the foregoing analysis, the present invention provides a multi-system multi-channel transcoding device, which is used to solve the problems of large size and poor capability of transcoding service capacity expansion of the existing transcoding device.
The purpose of the utility model is mainly realized through the following technical scheme:
a multi-system multi-path transcoding device comprises a CPCI carrier plate, a plurality of transcoding plates and a CPCI connector;
the CPCI connector is connected to one side of the CPCI carrier plate in a crimping mode;
the CPCI carrier plate is provided with N groups of first network transformers and network switching chips which are sequentially connected, and each first network transformer is electrically connected with the CPCI connector;
the plurality of code transfer plates are stacked in a multilayer mode, and each layer is parallel to the CPCI carrier plate; the plurality of transcoding plates are divided into N groups, and one group of transcoding plates are electrically connected with one network switching chip on the CPCI carrier plate through a high-speed connector and used for receiving external data transmitted by any one network switching chip and transcoding the external data; wherein N is more than or equal to 1.
Further, the CPCI module comprises a CPCI metal pulling aid and a 6U4HP baffle, wherein the CPCI metal pulling aid is fixed at two ends of the 6U4HP baffle through screws, and the 6U4HP baffle is electrically connected with the CPCI carrier plate through a high-speed connector and is vertically fixed on the CPCI carrier plate through screws, and the side, opposite to the CPCI connector, is connected with the CPCI carrier plate.
Furthermore, a debugging serial port and a status indicator lamp are arranged on the 6U4HP baffle.
Furthermore, the plurality of transcoding plates comprise a second network transformer, a transcoding module and a memory which are connected in sequence and are used for receiving the external data transmitted by any network switching chip and storing the external data after transcoding.
Further, the second network transformer is connected with the transcoding module through a port physical layer.
Furthermore, the CPCI carrier board further comprises an IO driving circuit, a power conversion circuit, a reset circuit, and a debug interface circuit;
the IO driving circuit is cascaded with the plurality of code conversion plates in a daisy chain mode, and transmits an external slot position coding signal and a case coding signal received by the CPCI connector to the plurality of code conversion plates;
the reset circuit is respectively connected with the transcoding plates and transmits level signals to the transcoding plates so as to initialize the transcoding plates;
the debugging interface circuit is respectively connected with the transcoding plates and receives the working state feedback of the transcoding plates;
the power supply conversion circuit is respectively connected with the IO driving circuit, the reset circuit, the debugging interface circuit, the multiple groups of network transformers, the network exchange chip and the multiple transcoding plates.
Further, the code conversion plate further comprises:
the signal amplification circuit is connected with the IO driving circuit in series and the transcoding module, receives the transmitted external slot position coding signal and the transmitted case coding signal and transmits the external slot position coding signal and the transmitted case coding signal to the transcoding module;
the input end of the PWM power supply controller is connected with the power supply conversion circuit, and the output end of the PWM power supply controller is connected with the transcoding module;
and the memory module is connected with the transcoding module and used for caching the transcoded data.
Furthermore, the debugging serial port and the status indicator lamp are respectively connected with the debugging interface circuit.
Further, the network switching chip is a two-layer ethernet chip.
Further, the transcoding module adopts a chip HI3796MRBCV 2010.
Compared with the prior art, the utility model discloses can realize one of following beneficial effect at least:
1. the utility model discloses be connected a plurality of transcoding boards through high-speed connector and CPCI support plate electricity, realized integrating, small, can satisfy transcoding device volume miniaturized embedded application scene demand;
2. the utility model discloses a plurality of network switching chips and a plurality of commentaries on classics code plates that correspond can distribute the external data that need decode to a plurality of commentaries on classics code plates, and transcoding business capacity expanding capacity is strong, has improved transcoding speed and efficiency;
3. the utility model discloses pass through high-speed connector with a plurality of commentaries on classics sign indicating number boards and be connected with CPCI support plate electricity, realize the plug function of commentaries on classics sign indicating number board, very big has made things convenient for the maintainability replacement of business capacity extension and commentaries on classics sign indicating number board.
The utility model discloses in, can also make up each other between the above-mentioned each technical scheme to realize more preferred combination scheme. Additional features and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. The objectives and other advantages of the invention will be realized and attained by the structure particularly pointed out in the written description and drawings.
Drawings
The drawings are only for purposes of illustrating particular embodiments and are not to be construed as limiting the invention, wherein like reference numerals are used to designate like parts throughout the drawings.
Fig. 1 is a schematic front view of a multi-system multi-channel transcoding device according to an embodiment of the present invention;
fig. 2 is a schematic top view of a multi-system multi-channel transcoding device according to an embodiment of the present invention;
fig. 3 is a schematic side view of a multi-system multi-channel transcoding device according to an embodiment of the present invention;
fig. 4 is a schematic diagram of the embodiment of the present invention illustrating the connection between the CPCI carrier board and the transcoding board.
Reference numerals:
1-CPCI (Compact Peripheral Component Interconnect, Compact PCI) metal plug; 2-6U 4HP baffles; 3-CPCI carrier plate; 4-code transfer plate; a 5-CPCI connector; 6-status indicator light.
Detailed Description
The following detailed description of the preferred embodiments of the invention, which is to be read in connection with the accompanying drawings, forms a part of this application, and together with the embodiments of the invention, serve to explain the principles of the invention and not to limit its scope.
The utility model discloses a multi-system multi-path transcoding device, as shown in figure 1, which comprises a CPCI carrier plate, a plurality of transcoding plates and a CPCI connector; specifically, fig. 1, fig. 2, and fig. 3 are a front view, a top view, and a side view of the multi-system transcoding device, respectively.
The CPCI connector is connected to one side of the CPCI carrier plate in a crimping mode;
the CPCI carrier plate is provided with N groups of first network transformers and network switching chips which are sequentially connected, and each first network transformer is electrically connected with the CPCI connector; preferably, the first network transformer adopts a chip HX5008NL, and the network switching chip adopts a chip BCM53128 KQLE.
The plurality of code transfer plates are stacked in a multilayer mode, and each layer is parallel to the CPCI carrier plate; the plurality of transcoding plates are divided into N groups, and one group of transcoding plates are electrically connected with one network switching chip on the CPCI carrier plate through a high-speed connector and used for receiving external data transmitted by any one network switching chip and transcoding the external data; wherein N is more than or equal to 1.
Preferably, the CPCI carrier plate is designed by adopting a standard 6U CPCI size, and the plate size is 233.35 mmx160mmx20.32mm. Illustratively, the CPCI connector adopts a CPCI crimp connector with the model number of CPCI064176 to realize the access functions of 2-network signals, external 12V power supply, chassis slot position signals and the like.
Illustratively, the multi-system multi-path transcoding device comprises 12 transcoding boards, wherein 4 groups of first network transformers and network switching chips which are sequentially connected are arranged on the CPCI carrier board, the 12 transcoding boards are divided into 4 groups, each group comprises three transcoding boards, and the three transcoding boards are respectively and electrically connected with one network switching chip on the CPCI carrier board through high-speed connectors. When the network switching chip receives external data to be transcoded, the external data can be distributed to a group of transcoding plates electrically connected with the network switching chip correspondingly for transcoding.
Preferably, 12 code transfer plates are stacked in 2 layers, each layer is parallel to the CPCI carrier plate, each layer comprises 6 code transfer plates, the code transfer plates are arranged in 2 x 3 arrays, one layer of 6 code transfer plates close to the CPCI carrier plate are connected and fixed on the CPCI carrier plate through high-speed connectors, and one layer of 6 code transfer plates far away from the CPCI carrier plate are also connected to the CPCI carrier plate through high-speed connectors and fixed on the CPCI carrier plate through support columns.
Preferably, the CPCI module further comprises a CPCI metal pulling aid and a 6U4HP baffle, wherein the CPCI metal pulling aid is fixed at two ends of the 6U4HP baffle through screws, and the 6U4HP baffle is electrically connected with the CPCI carrier plate through a high-speed connector and is vertically fixed on the CPCI carrier plate through screws, and the side, opposite to the CPCI connector, is connected with the CPCI carrier plate.
The CPCI metal pulling aid meets the CPCI standard requirement, supports the hot plug function under the power supply condition, and is manufactured by aluminum alloy milling or grinding tool processing in consideration of the requirements of the CPCI metal pulling aid on reliability and firmness; the 6U4HP baffle is a standard 6U4HP size metal baffle, satisfies CPCI specification requirement.
In order to debug the code transfer board and display the running state of the code transfer board, a debugging serial port and a state indicator lamp are arranged on the 6U4HP baffle. When the transcoding board normally operates, the status indicator light is displayed in green, and when the transcoding board has a power supply problem and cannot normally operate or receives abnormal external data to be transcoded and cannot transcode, the status indicator light is displayed in flashing red.
Preferably, each of the transcoding boards includes a second network transformer, a transcoding module, and a memory, which are connected in sequence, and are configured to receive the external data transmitted by any one of the network switch chips, where the memory is connected to the transcoding module through an NF _ DQ0-NF _ DQ7 interface bus by using a chip MT29F128G08CFABBWP, and is configured to store transcoded data.
Preferably, the second network transformer is connected to the transcoding module through a port physical layer. Illustratively, the port physical layer adopts an RTL8211EG-VB-CG port physical layer.
As shown in fig. 4, preferably, the CPCI carrier board further includes an IO driving circuit, a power conversion circuit, a reset circuit, and a debug interface circuit; the IO driving circuit, the power supply conversion circuit, the reset circuit and the debugging interface circuit are realized by adopting the existing circuit structure.
The IO driving circuit is cascaded with the plurality of code conversion plates in a daisy chain mode, and transmits an external slot position coding signal and a case coding signal received by the CPCI connector to the plurality of code conversion plates;
the reset circuit is respectively connected with the transcoding plates and transmits level signals to the transcoding plates so as to initialize the transcoding plates; specifically, after the transcoding plates complete transcoding work, the reset circuit sends level signals to the transcoding plates to initialize the transcoding plates.
The debugging interface circuit is respectively connected with the transcoding plates and receives the working state feedback of the transcoding plates; and the working states of the plurality of code transfer plates are displayed through the state indicating lamps.
The power conversion circuit receives external 12V power supply through the CPCI connector and is respectively connected with the IO driving circuit, the reset circuit, the debugging interface circuit, the multiple groups of network transformers, the network switching chip and the multiple transcoding boards, so that the IO driving circuit, the reset circuit, the debugging interface circuit, the multiple groups of network transformers, the network switching chip and the multiple transcoding boards are powered.
Preferably, the code conversion plate further comprises:
the signal amplification circuit is connected with the IO driving circuit in series and the transcoding module, receives and amplifies the transmitted external slot position coding signal and the transmitted case coding signal, and transmits the external slot position coding signal and the transmitted case coding signal to the transcoding module; illustratively, the signal amplification circuit adopts a chip SN74ALVC16424x, and the transcoding module distinguishes the chassis and the slot according to the received external slot coding signal and the chassis coding signal state to obtain a corresponding unique multicast address, where the multicast address is applied to external transmission of transcoded audio/video data.
And the input end of the PWM power supply controller is connected with the power supply conversion circuit, the output end of the PWM power supply controller is connected with the transcoding module, and the received external 12V power supply received by the power supply conversion circuit is converted into a 1.2V power supply so as to respectively supply power to the transcoding modules. Preferably, the PWM power controller uses a chip TPS54821 RHLR.
And the memory module is connected with the transcoding module and used for caching the transcoded data. Preferably, the memory module is connected to the transcoding module through a DDR0_ a0-a14 data bus by using a chip MT41K128M16JT 6U.
Preferably, the debugging serial port and the status indicator lamp are respectively connected with the debugging interface circuit. The debugging device is used for debugging the code transfer plate and receiving and displaying the working state feedback of the code transfer plate.
Preferably, the network switching chip is a two-layer ethernet chip.
Preferably, the transcoding module uses a chip HI3796MRBCV2010 to support decoding and encoding of videos with input formats of MPEG2, MPEG4, h.264, h.265, AVS and AVS +, decoding and encoding of audios with input formats of MP2, AC3 and AAC, the encoded audio/video encoding format supports h.264 and h.265, the functions of transcoding with resolution up to 72 road definitions D1, transcoding with resolution of 24-way high definition P, transcoding with resolution of 12-way ultra high definition 4K, and streaming media protocols of TS over UDP and HLS are supported, and the transcoded video stream can support HTML5 playing without plug-in.
Compared with the prior art, the multi-system multi-path transcoding device provided by the utility model has the advantages that firstly, a plurality of transcoding plates are electrically connected with the CPCI carrier plate through the high-speed connector, so that the integration is realized, the size is small, and the embedded application scene requirement of the small size of the transcoding device can be met; secondly, a plurality of network switching chips and a plurality of corresponding transcoding boards are adopted, external data to be decoded can be distributed to the transcoding boards, the transcoding service capacity expansion capability is strong, and the transcoding rate and efficiency are improved; moreover, the plurality of code conversion plates are electrically connected with the CPCI carrier plate through the high-speed connector, the pluggable function of the code conversion plates is realized, and the service capacity expansion and the maintainability replacement of the code conversion plates are greatly facilitated.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention should be covered by the present invention.
Claims (10)
1. A multi-system multi-path transcoding device is characterized by comprising a CPCI carrier plate, a plurality of transcoding plates and a CPCI connector;
the CPCI connector is connected to one side of the CPCI carrier plate in a crimping mode;
the CPCI carrier plate is provided with N groups of first network transformers and network switching chips which are sequentially connected, and each first network transformer is electrically connected with the CPCI connector;
the plurality of code transfer plates are stacked in a multilayer mode, and each layer is parallel to the CPCI carrier plate; the plurality of transcoding plates are divided into N groups, and one group of transcoding plates are electrically connected with one network switching chip on the CPCI carrier plate through a high-speed connector and used for receiving external data transmitted by any one network switching chip and transcoding the external data; wherein N is more than or equal to 1.
2. The multi-standard multi-transcoding device of claim 1, further comprising a CPCI metal plug and a 6U4HP baffle, wherein the CPCI metal plug is fixed at two ends of the 6U4HP baffle by screws, and the 6U4HP baffle is electrically connected to the CPCI carrier by a high-speed connector and is vertically fixed on the CPCI carrier by screws at the opposite side of the CPCI connector.
3. The multi-system multi-way transcoding device of claim 2, wherein the 6U4HP baffle is provided with a debugging serial port and a status indicator light.
4. The multi-system multi-channel transcoding device of claim 3, wherein each of the transcoding boards comprises a second network transformer, a transcoding module and a memory, which are connected in sequence, and is used for receiving the external data transmitted by any one of the network switching chips, transcoding the external data and storing the transcoded external data.
5. The multi-system multi-channel transcoding device of claim 4, wherein the second network transformer is connected to the transcoding module through a port physical layer.
6. The multi-system multi-channel transcoding device of claim 5, wherein the CPCI carrier further comprises an IO driving circuit, a power conversion circuit, a reset circuit and a debugging interface circuit;
the IO driving circuit is cascaded with the plurality of code conversion plates in a daisy chain mode, and transmits an external slot position coding signal and a case coding signal received by the CPCI connector to the plurality of code conversion plates;
the reset circuit is respectively connected with the transcoding plates and transmits level signals to the transcoding plates so as to initialize the transcoding plates;
the debugging interface circuit is respectively connected with the transcoding plates and receives the working state feedback of the transcoding plates;
the power supply conversion circuit is respectively connected with the IO driving circuit, the reset circuit, the debugging interface circuit, the multiple groups of network transformers, the network exchange chip and the multiple transcoding plates.
7. The multi-system multi-channel transcoding device of claim 6, wherein the transcoding board further comprises:
the signal amplification circuit is connected with the IO driving circuit in series and the transcoding module, receives the transmitted external slot position coding signal and the transmitted case coding signal and transmits the external slot position coding signal and the transmitted case coding signal to the transcoding module;
the input end of the PWM power supply controller is connected with the power supply conversion circuit, and the output end of the PWM power supply controller is connected with the transcoding module;
and the memory module is connected with the transcoding module and used for caching the transcoded data.
8. The multi-system multi-channel transcoding device of claim 7, wherein the debugging serial port and the status indicator lamp are respectively connected with the debugging interface circuit.
9. A multi-system multi-channel transcoding device according to any of claims 1-8, wherein the network switching chip is a two-layer ethernet chip.
10. The multi-system multi-channel transcoding device of claim 7, wherein the transcoding module is implemented as a chip HI3796MRBCV 2010.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922475598.0U CN211239991U (en) | 2019-12-31 | 2019-12-31 | Multi-system multi-channel transcoding device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922475598.0U CN211239991U (en) | 2019-12-31 | 2019-12-31 | Multi-system multi-channel transcoding device |
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| CN211239991U true CN211239991U (en) | 2020-08-11 |
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| CN201922475598.0U Active CN211239991U (en) | 2019-12-31 | 2019-12-31 | Multi-system multi-channel transcoding device |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112910801A (en) * | 2021-03-31 | 2021-06-04 | 国家广播电视总局监管中心 | Network switching board card |
| CN112929671A (en) * | 2021-03-31 | 2021-06-08 | 国家广播电视总局监管中心 | A transcoding device and cable digital television signal supervisory equipment for audio frequency and video |
-
2019
- 2019-12-31 CN CN201922475598.0U patent/CN211239991U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112910801A (en) * | 2021-03-31 | 2021-06-04 | 国家广播电视总局监管中心 | Network switching board card |
| CN112929671A (en) * | 2021-03-31 | 2021-06-08 | 国家广播电视总局监管中心 | A transcoding device and cable digital television signal supervisory equipment for audio frequency and video |
| CN112910801B (en) * | 2021-03-31 | 2024-05-28 | 国家广播电视总局监管中心 | Network exchange board card |
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