Vga Acquisition Card Selection And Application Of18 People Read The |0 Comments

Along with the development of streaming media technology

, broadcast system technology, the screen edge fusion technology rapid development, especially the edge fusion system and system of VGADVIHDMI acquisition card has been widely used, such as VGA acquisition card belonging to a high-end professional products, contact person is very few, so in product selection will encounter many difficulties, that the user does not know how to choose, following on from several aspects of simple to explain to the VGA acquisition card choice.

1, whether for independent research and development of products

In the selection of VGA card products before, we first need to know about the manufacturer about the situation, such as the enterprise is it right? Its own product research and development, there is no lasting supply capacity, why so say, the key problem is to VGA acquisition card development difficulty, content of science and technology is relatively high, customers in the application the process will also exist some professional applications need to manufacturers to help solve, this characteristic had decided must have very good technical service to do safeguard, must be fast and accurate to solve the question ability, so it must request the card is preferably independent research and development, in order to protect the customer's normal use. We previously used the Microvision's VGA acquisition card, completely independent research and development, services and the effect are very good.

In 2, VGA acquisition card types

The VGA acquisition card has many kinds, according to the bus form is more commonly used can be divided into PCI, PCI-E X1, PCI-E X4three, according to the interface forms can be divided into VGA, DVI, HDMI, SDI, YpbPr, but generally use more VGA, DVI, HDMI three, in the acquisition channel in addition to the traditional the single way, at the same time, DVI VGA dual card dual acquisition card, HDMI dual acquisition card, general business will have a series of products for customer choice. So in the choice of VGA acquisition card must pay attention to their product line, is it right? Rich, or so for their own product development to prepare, and can see the corporate R & D capability.

In 3, the product properties

The image quality, this is relatively simple, the manufacturers themselves a for the evaluation of the product description or draw a picture can be, if the distance data acquisition card production company near or in the same city, customers can go or door manufacturers test.

The acquisition point, the product can be seen, the higher the value acquisition resolution and frame rate will be higher. Acquisition card, the better the performance.

The software operation difficulty degree, currently on the market there are many card debugging is very troublesome, because a lot of users are used for the first, and often in the project commissioning, resulting in many unnecessary troubles, delay delay project, caused no small loss. Dimensional image of the VGA acquisition card series, fully automatic matching, as long as the installation of the fundamental drivers does not need any operation can normally display.

The development kit and the compatibility better, support the use of Microsoft DirectShow /VFW interface, can also be provided based on VC, VB, Delphi two development kit demo program and source code.

In 4, the product price

This is very important, as each consumer wants to buy high quality and inexpensive products, but the VGA acquisition card really isn't so, the price still more than general collection Kalve high, specifically analysed the following respects.

Board material and process, if the poor PCB plate and poor device, it's easy to think of the cost down, but the cause of instability in the using process of the board, is more problematic, to project risks.

we will find some cards sold cheaper, investigate its reason, the card basically is the independent research and development, first from other manufacturers, a large number of procurement, in order to expedite the recovery of funds, low-priced sale, this will result in serious customer service does not follow to go up, the lack of technical support, but cannot really represents the VGA acquisition card at a low price.

Hardware subtraction with, without affecting the basic properties of the devices to take, no onboard cache, so that the VGA acquisition card performance is further reduced, if strictly in accordance with the hardware stability design, VGA acquisition card cost is not too low.

The software to do it very easy to use, single function, difficult to debug, because this product development takes time and experience, some initial research, although produced hardware looks like, but the real property is a difference in the world. If you want to reach a certain level, also be time consuming and laborious.

The hardware is not compatible integrated graphics collection, DVI is not a true digital architecture, just the card to do a simple interface conversion, double card is not a true dual acquisition, just a simple single copy, resolution alone cannot adjust etc.. If you want to truly these technical indicators, are going to have to pay a great cost.

So, as long as it is really wanted VGA acquisition card to do a good job, from the development difficult, cost speaking is not too low, we choose the time must be relatively cost-effective, rather than simply talk about the price is high or low prices for purchase decision.

5, the ability to solve problems

The VGA acquisition card, in the process of debugging will certainly have some problems, so cannot be the first time, fast and accurate for customers to solve the problem is very important, so this is the judgment card performance is a very important factor.

In this paper, part of the reference to the Microvision" Microvision VGA acquisition card series advantage and evaluation that" one article, the above is only some personal experiences and perspectives, inadequacies please.

by: becky

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