CN106658020B

CN106658020B - H.265 multipath plug-in card type network high definition decoder

Info

Publication number: CN106658020B
Application number: CN201611222236.5A
Authority: CN
Inventors: 戴林; 刘雷
Original assignee: Tianjin Tiandy Information Systems Integration Co ltd
Current assignee: Tianjin Tiandy Information Systems Integration Co ltd
Priority date: 2016-12-27
Filing date: 2016-12-27
Publication date: 2024-04-19
Anticipated expiration: 2036-12-27
Also published as: CN106658020A

Abstract

The invention provides an H.265 multipath plug-in card type network high definition decoder which comprises a switchboard backboard, a main card, an interface card, a decoding card and a 5U plug-in card type chassis, wherein the interface card, the main card and the decoding card are inserted into PCIE slots of the 5U plug-in card type chassis and are connected with the switchboard backboard. The H.265 multi-way plug-in card network high-definition decoded video compression ratio H.264 is improved by more than 30%, higher compression ratio and better image quality are obtained with lower technical cost, the problem of insufficient bandwidth when multi-way high-definition video is accessed is solved, meanwhile, the unique 5U plug-in card type case realizes the plug-in of a decoding card, the complete machine access and forwarding functions are realized by matching with the switch slices of REALTEK, the requirement of monitoring system deployment can be met more flexibly, and more IPC, NVR, NVS accesses are allowed by the ultra-high bandwidth.

Description

H.265 multipath plug-in card type network high definition decoder

Technical Field

The invention belongs to the technical field of video decoders, and particularly relates to an H.265 multipath card-inserting type network high-definition decoder.

Background

A video decoder refers to a device capable of compressing or decompressing network video. In recent years, as the trend of the network camera toward high definition is obvious, the network decoder has the potential to gradually replace the analog video matrix. The network video decoder with high definition and large number of paths is not only a necessary device for deployment and management of a large-sized high definition monitoring system, but also an ideal device for solving the problem of on-wall display of high definition network video signals in a monitoring center.

However, most of the network decoders of common brands on the market are based on h.264 decoding, and have low compression rate and serious system bandwidth. And the network video decoder of most brands is the all-in-one machine with fixed decoding path number and interface number, and a user must buy a complete host if not too many decoding path numbers are needed, which is definitely a fund waste caused by the fact that the requirement is smaller than the standard. Many monitoring sites have complex and changeable requirements, and an integral host with fixed decoding paths cannot flexibly cope with the changing requirements. Along with the increasing trend of high definition of IPC, the number of high definition video access paths is also an important index for considering the performance of a decoder. More and more monitoring sites need a network video decoder with selectable decoding paths, a cost scheme for flexible selection of users, wider access forwarding bandwidth and more access paths, and the demand is more and more strong.

Disclosure of Invention

In view of this, the present invention aims to provide an h.265 multi-way card network high definition decoder, which obtains higher compression ratio and better image quality with lower technical cost, solves the problem of insufficient bandwidth when multi-way high definition video is accessed, and improves the flexibility of an application system.

In order to achieve the above purpose, the technical scheme of the invention is realized as follows:

The H.265 multipath card-inserting type network high-definition decoder comprises a switchboard backboard, a main card, an interface card, a decoding card and a 5U card-inserting type chassis, wherein the interface card, the main card and the decoding card are inserted into PCIE slots of the 5U card-inserting type chassis and are connected with the switchboard backboard.

Further, the switch backboard is an RTL8376 and an RTL8218 switch nest plate of REALTEK company.

Furthermore, a power switch card is inserted into the PCIE slot of the 5U card-inserting chassis, and the power switch card is connected with the switch back board.

Further, a power supply switching board and two power supplies connected with the power supply switching board are arranged on the switch backboard.

Further, a power-on delay circuit is arranged on the switch backboard.

Furthermore, the main card and the decoding card both adopt a Hai Si 3536 chip minimum system, a network interface is arranged outside the main card, and HDMI and VGA interfaces are arranged outside the decoding card.

Furthermore, the interface card is provided with a plurality of alarm output interfaces, an alarm input interface and an RS-485 interface.

Compared with the prior art, the H.265 multi-way plug-in card type network high-definition decoder has the following advantages:

(1) The H.265 multi-channel plug-in card type network high-definition decoder is designed based on a Hai Si series audio/video decoding chip, the video compression ratio H.264 is improved by more than 30%, and the higher compression ratio and better image quality are obtained with lower technical cost, so that the problem of insufficient bandwidth when multi-channel high-definition video is accessed is solved; the unique 5U plug-in card type case realizes the plug-in of the decoding card, and the complete machine access and forwarding functions are realized by matching with the switch set of REALTEK, so that the requirement of monitoring system deployment can be met more flexibly, and more IPC, NVR, NVS access is allowed by the ultra-high bandwidth.

(2) The H.265 multipath plug-in card type network high-definition decoder can decode and output video data transmitted by a front-end network high-definition camera or NVR through a network to a television wall (display equipment such as a high-definition monitor, a large screen and the like), and the functions of splicing the television wall, switching images, alarming linkage output and the like are realized through a client management platform; the whole machine supports 24 paths of high-definition video decoding output, 24 paths of audio decoding output and 2 paths of analog video decoding output; shan Jiema cards support 2 paths of high-definition video decoding output, 2 paths of audio decoding output and 1 path of analog video decoding output; the decoding and splicing control capability is super strong, and the functions of 96-block-screen cascading and splicing, windowing, superposition, roaming, screen crossing and the like are supported; 16 system plans and quick access may be provided. Any path of signal can be subjected to stepless scaling; the whole machine has an audio decoding function, supports decoding of G.711A, G.711U and AAC audio formats, supports decoding of 4K/UXGA/SXGA/QXGA/XGA/1080P/960P/960H/720P/VGA/4CIF/CIF, and has high-definition video input and HDMI or VGA video interfaces.

Drawings

The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention. In the drawings:

FIG. 1 is a system block diagram of a decoder according to an embodiment of the present invention;

FIG. 2 is a block diagram of a master card according to an embodiment of the present invention;

Fig. 3 is a block diagram of a decoding card according to an embodiment of the present invention.

Detailed Description

It should be noted that, without conflict, the embodiments of the present invention and features of the embodiments may be combined with each other.

In the description of the present invention, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art in a specific case.

The invention will be described in detail below with reference to the drawings in connection with embodiments.

As shown in fig. 1, the h.265 multi-way card-inserting network high-definition decoder comprises a switch backboard, a main card, an interface card, a decoding card and a 5U card-inserting chassis, wherein the interface card, the main card and the decoding card are inserted into PCIE slots of the 5U card-inserting chassis and are connected with the switch backboard.

The switch backboard is an RTL8376 and an RTL8218 switch sleeve chip of REALTEK company, and can be externally connected with 16 kilomega network ports.

And a power switch card is also inserted into the PCIE slot of the 5U plug-in card type case, and the power switch card is connected with the switch backboard.

The switch backboard is provided with a power supply switching board and two power supplies connected with the power supply switching board, each main card and each decoding card are electrified through the switch backboard, the power supply is set to be a double 320W power supply redundancy backup in the embodiment, the whole system is powered, and the double power supplies support hot plug, so that seamless power supply disassembly and replacement can be realized, and the UPS power-off function is realized.

The switch backboard is provided with the power-on delay circuit, every 3 decoding cards are divided into a group to be electrified, every group is 500ms,12 decoding cards are divided into 4 groups at intervals, and the power-on time is 4 times, so that the power-on peak of a power supply can be effectively avoided.

As shown in fig. 2 and fig. 3, the main card and the decoding card both adopt a Hai Si 3536 chip minimum system, a network interface is arranged outside the main card to realize network video access and transparent transmission, and an HDMI and a VGA interface are arranged outside the decoding card to be used for accessing a large screen.

The interface card is provided with 8 alarm outputs, 16 alarm inputs and 2 RS-485 interfaces, and can be externally connected with corresponding control equipment.

The main card system block diagram shown in fig. 2 is a core part of the whole system. The main chip adopts Hi3536 series audio and video decoding chip of Hai Si, and is internally provided with a 4-core ARM Cortex17 main control processor for running peripheral driving and application programs and an internally provided ARM Cortex7 single-core processor for controlling related video modules. The main card includes 3536 minimum system circuitry configured with 8 pieces of 4GB DDR3 granules, with maximum addressing control of 3GB. The main card is provided with 1 RJ45 standard gigabit network interface, 2 USB and 1 RS-232 standard debugging port. The USB interface supports high-resolution base map display with the maximum mark dividing rate of 4K. Meanwhile, 2 main cards are defaulted in the system, so that the access bandwidth can be increased to 800M, and the whole machine can access 384 paths of videos at maximum. The method supports H.264/H.265 decoding self-adaption, supports the encapsulation formats of main streams such as RTP, MP4 and the like, supports decoding of ADPCM, G.711A, G.711U and AAC audio formats, and is compatible with multi-main stream IPC access on the market.

As shown in the block diagram of the decoding card system in fig. 3, the minimum decoding card system is consistent with the main card, and all adopt the haisi Hi3536 platform. The external interfaces have 2 HDMI, 2 VGA and 1 BNC video interfaces, and 2 audio green terminal interfaces. Wherein HDMI maximally supports 4K resolution display. The whole system maximally supports the insertion of 12 decoding cards, and the monitoring system can flexibly select the number of the decoding cards according to deployment requirements, so that the use cost is reduced to the greatest extent. When the system works normally, the digital video code stream transmitted by the IPC is accessed to the main card through the network interface, the main card transmits data to each decoding card through the gigabit switch backboard, the decoding card decodes and previews the video data, and video distribution and large screen splicing control is carried out through unique software.

The foregoing description of the preferred embodiments of the invention is not intended to be limiting, but rather is intended to cover all modifications, equivalents, alternatives, and improvements that fall within the spirit and scope of the invention.

Claims

The H.265 multipath plug-in card type network high definition decoder is characterized in that: the intelligent switch comprises a switch backboard, a main card, an interface card, a decoding card and a 5U card-inserting type chassis, wherein the interface card, the main card and the decoding card are inserted into PCIE slots of the 5U card-inserting type chassis and are connected with the switch backboard;

the switch backboard is an RTL8376 and an RTL8218 switch sleeve chip of REALTEK company;

a power switch card is also inserted into a PCIE slot of the 5U card-inserting type chassis, and the power switch card is connected with a switchboard backboard;

The switch backboard is provided with a power supply switching board and two power supplies connected with the power supply switching board;

a power-on delay circuit is arranged on the switch backboard;

The main card and the decoding card are respectively a Hai Si 3536 chip minimum system, a network interface is arranged outside the main card, and HDMI and VGA interfaces are arranged outside the decoding card;

The interface card is provided with a plurality of alarm output interfaces, an alarm input interface and an RS-485 interface.