Microscope camera USB interface and 1394 interface speed problem
Mingmei engineers often encounter customers asking such questions: Is the USB interface in the different interfaces of the microscope camera fast or 1394 fast? Mingmei engineers summed up the experience and shared it with everyone. If there is something wrong, please correct me.
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Microscope camera USB interface | Microscope camera 1394 interface |
In theory, the speed of the USB interface and the 1394 interface are the same, but in actual use, it is often felt that 1394 is faster, why?
In fact, as long as you see the transmission tools used by the two different interfaces, you can understand.
1. The USB interface has only one SUB data line, then the data it transmits must be processed by the computer. It needs to occupy a part of the computer's memory for calculation, and then pass the operation result to the graphics card.
2.1394 interface In addition to a data line, it also needs a 1394 card, the key is on this card, because it replaces the computer's operation, the data is processed in the card in advance before being passed to the graphics card.
3. The problem is found in this place. When the configuration of the computer is not very good, the speed of the 1394 interface will be faster than that of the USB; when the other conditions are the same, if the data line is lengthened at the same time, the speed of the 1394 will not be affected, and the speed of the USB is Decreased as the length of the line increases.
2.1394 interface In addition to a data line, it also needs a 1394 card, the key is on this card, because it replaces the computer's operation, the data is processed in the card in advance before being passed to the graphics card.
3. The problem is found in this place. When the configuration of the computer is not very good, the speed of the 1394 interface will be faster than that of the USB; when the other conditions are the same, if the data line is lengthened at the same time, the speed of the 1394 will not be affected, and the speed of the USB is Decreased as the length of the line increases.
Maybe everyone here has doubts. Since this is the case, why not use the 1394 interface?
1. Because this involves compatibility issues. If you have a certain understanding of the computer, you will know that every time you add an external accessory to the motherboard of the computer, its stability will be reduced accordingly. Therefore, if the compatibility of the 1394 card is not good, it will easily lead to the use process. Unstable.
2. There is also a cost problem. More than one card costs more. This seems to be a manufacturer's problem, but in reality, this cost still requires consumers to pay for it.
3. On the installation and maintenance, the USB interface is much more convenient. Once there is a problem in the process of use, the general user can solve it by himself, and it is not necessary to wait until the manufacturer comes to solve it. This is also beneficial to the user and will not delay the work.
This is why many manufacturers are keen to develop USB interface cameras.
3. On the installation and maintenance, the USB interface is much more convenient. Once there is a problem in the process of use, the general user can solve it by himself, and it is not necessary to wait until the manufacturer comes to solve it. This is also beneficial to the user and will not delay the work.
This is why many manufacturers are keen to develop USB interface cameras.
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