Analysis of performance and characteristics of next-generation video compression card technology

In the field of video surveillance, video compression cards occupy a very important position. From the earliest MPEG1 compression card, to the 8800 compression card, and the popular 7130 compression card currently on the market, there has been continuous improvement in technology. With the continuous development of technology, higher requirements are put forward for the current video compression card.

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Tag: Smart Recognition Noise Filter

Shenzhen Liyan Technology Co., Ltd. has developed a new 8160 16-channel full-time video compression card (hereinafter referred to as 8160 compression card), using the latest technology in the industry - improved H.264 compression algorithm, using PCI-Ex High-speed interface and 10bit dressing noise filter, high-quality video images, the system is stable and reliable.

Here are some of the features and features of the 8160 compression card:

1. Use improved H264 compression method and built-in digital watermark to prevent tampering;

Why is the improved H264 compression method? At present, some video compression cards developed by some manufacturers are called the so-called "H264" compression algorithm. In fact, they do not see the "H264" compression mode in the properties of the video file, and the 8160 compression. The backup data of the card can be seen in the backup data of the manufacturer.

Analysis of performance and characteristics of next-generation video compression card technology

Other compression card video file attributes and 8160 compression card backup file attributes

In addition to the obvious video watermarks such as time and channel on the video surface, digital watermarks that are not perceived by the human eye are hidden inside the video data. It is highly confidential, and it is easy to find out if the data has been tampered with!

2. Use PCI-Ex high-speed interface for high-quality image transmission;

There are only a handful of manufacturers that can flexibly use PCI-E interface technology for high-quality image transmission, because this technology requires developers to have higher hardware design capabilities. Maybe someone would ask what is the difference between a PCI-E interface and a PCI interface? What are the benefits? Why use PCI-E interface technology?

Ordinary PCI uses a shared parallel architecture of the bus, which can connect to many different types of terminals, such as graphics cards, network cards, sound cards, and image capture cards. All of these different terminals must share this PCI bus with only 33 MHz frequency and Its bandwidth, which causes the image of the image capture card to have a drawing phenomenon. The PCI-E bus frequency is 66MHZ, which is twice that of the PCI bus. It adopts the industry's advanced point-to-point serial connection. Each device has its own dedicated connection (ie, independent data channel), and does not need to request broadband from the entire bus. The data transmission does not interfere with each other, and high-quality image transmission can be performed to achieve high data volume that PCI cannot provide.

3, using 10bit3D dressing noise filter, video signal clarity;

The so-called comb filter is like a comb to filter out the noise in the image from the hair, 3D is the meaning of three-dimensional, high and low, large and small noise can be filtered out. At present, the 7130 card on the market also has the same function, but only the higher the number of bits of 9bit, the higher the accuracy, the clearer and more realistic the picture.

4, the use of integrated file structure, the system is more stable, remove the concept of file packaging, there is power-off preservation function;

There are two file structures used by current compression card manufacturers: file-based and hard disk-exclusive.

The file structure storage method is similar to the "save date channel.....video file" path storage. After recording for a certain period of time, a packet or video is stopped to make a packet to form a file. The advantage of this file structure is that the storage is flexible. However, if motion detection recording or alarm recording is used, a lot of files are packed, which makes the recording file cumbersome and easy to lose the recording file, and the recording file covering operation time is long.

The hard disk exclusive structure refers to the designation of a drive letter of the hard disk as a storage recording area. For example, if the “E” disk is the designated video storage address, other files not related to the recording cannot be stored in the “E” disk. The advantage is that the data is kept intact, not easy to lose, and the concept of packaging is removed. However, when a large hard disk (more than 40G) is used, the use of the hard disk may be insufficient or the hard disk may be collapsed, and the consequences are unimaginable.

The integrated file structure combines the advantages of both. When using the file method, each channel is saved separately. Thereby, the stability of the system can be ensured, and the security of the recorded data is ensured.

5, support widescreen display, intelligent recognition of 1024x768, 1280x1024, 1440x900 three resolutions;

At present, LCD screens and high-resolution digital TVs are becoming more and more popular. In order to adapt to the resolution of different display devices, the 8160 compression card can intelligently recognize the display resolution of widescreens, avoiding the incompleteness of widescreen display.

6, support VGA to video wall display;

Today's end users are not satisfied with displaying the monitor screen on a computer monitor or monitor. More and more users want to display it in the same way as the video wall. First, the monitor screen is large and the display is clear. Second, the control center is more professional. And style. In order to meet the differentiated needs of users, our 8160 compression card is fully compatible with various VGA-TV converters, which solves the user's worries.

7, support video timing cover, with a high degree of monitoring area confidentiality;

Security monitoring and control companies should know that many users in banks, communities, entertainment venues, hotels, hotels, office buildings, etc. do not want certain monitoring areas to be known by unrelated personnel. The 8160 compression card has a scientific video timing channel. Covering mode, with high monitoring area confidentiality, while video recording, cover video, only senior administrators have the right to cancel.

In addition, the interface and operation of the 8160 compression card is also very friendly and clear, easy to use, and is believed to be a strong hardware support for the majority of security monitoring vendors.

HDI PCB or High density interconnect PCBs are a way of making more room on your printed circuit board to make them more efficient and allow for faster transmission. It's relatively easy for most enterprising companies that are using printed circuit boards to see how this can benefit them.

High density interconnect (HDI) PCBs represent one of the fastest-growing segments of the printed circuit board market. Because of its higher circuitry density, the HDI PCB design can incorporate finer lines and spaces, smaller vias and capture pads, and higher connection pad densities. A high-density PCB features blind and buried vias and often contains microvias that are .006 in diameter or even less.

 

The copper is the circuits material and the circuits designed by the PCB designers. Depends on the current in the circuits, the PCB copper thickness could be done with 0.5oz-10oz. But the PCB designers need be noted that the copper track width/space need be enlarged with the thickness. For example, the minimum copper track width/space could be 3mil/3mil with 0.5oz, but would be 4mil/4mil with 1oz.

 

The PCB board could be rigid PCB, could be flex PCB and also could be Flex-Rigid PCB. And the materials could be FR4, PI, Aluminum, Copper-based, Rogers, Teflon, etc. They have different applications. For example, FR4 PCB is the most commonly used for rigid PCB and almost good for all electronics products; PI is the most commonly used for flex PCB; Aluminum and copper-based have good thermal diffusivity and always used for LED PCB ; Rogers PCB and Teflon PCB are always used for High Frequency PCB, etc.

 

PCB Manufacture Capabilities

 

Features 

 Capabilities

Layers

1-36 layers

Material

 FR-4, Aluminum, Copper, Polyimide, high frequency (Rogers, PTEE, PI), etc.

PCB Type

FR-4 Standard PCB , Aluminum PCB , Copper-based PCB, HDI PCB, Rigid-Flex PCB, Flex PCB, Thick Copper PCB and Rogers PCB, etc.

Board Thickness

0.1mm-6.0mm

Copper Thickness

1/2oz-6oz(18um-210um)

Biggest Board size

600mm*1200mm

Min Tracing/Spacing

0.075mm/0.075mm (3mil/3mil)

Min drilling Hole diameter

0.15mm(6mil), 0.1mm(4mil)-laser drill

Solder Mask

Green, Black, White, Red, Yellow, Blue and Purple, etc.

Silkscreen color

White, Blue, Black, Red, Yellow

Surface finish

HASL Lead free, Immersion Gold (ENIG), Immersion Tin, Immersion Silver, OSP, Carbon oil, etc.

Special Techniques

Impedance Control, Gold Fingers, Blind/Buried vias, Peelable solder mask, Half holes, Via-in-Pad and Countersink hole, etc.


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