|[Digital Electronics] - [Monitoring equipment]|
Card camera storage device | dedicated make up the difference link
32G memory card CIF mode (352 * 288 resolution) save 5 to 6 days video. HD VGA mode (640 * 480 resolution) can be stored for about 80 hours.
16G memory card CIF mode (352 * 288 resolution) save 3 to 4 days video. HD VGA mode (640 * 480 resolution) can be stored for about 40 hours.
8G memory card CIF mode (352 * 288 resolution) save 1 to 2 days recording. HD VGA mode (640 * 480 resolution) can be stored for about 20 hours.
The above data are the average, the specific storage time also subject to the actual environment, the dynamic screen and recording will affect the storage time. 30 minutes automatically generate a video, storage full video will automatically cycle through the coverage, has been stored the nearest video.
Description: The camera is no better than the average mobile device, it takes 24 hours to store the memory card, if
Once the memory card is a problem, it will cause equipment crash and other failures! Also said that perhaps your card in the general equipment such as mobile phones
With no problems, but does not mean that you can perfectly compatible with the camera.
After the purchase of memory cards, careful people will find that in the operating system, the capacity of the memory card and the official nominal capacity does not match, should be less than the nominal capacity, the greater the capacity of the greater the difference.
Nominal 512MB memory card, the operating system shows only 490MB or so;
1GB memory card is only about 980MB;
While the 4GB memory card is only about 3.7GB.
This is not a vendor or a dealer to cheat consumers, but the memory card manufacturers on the capacity of the calculation method and the operating system calculation method and the unit conversion relationship caused by different.
As we all know, in the computer is the use of binary, which in the operating system on the capacity of the calculation is based on every 1024, every 1024 bytes for 1KB, every 1024KB 1MB, every 1024MB for 1GB;
And the memory card manufacturers in terms of computing capacity is 1000 per 1000, every 1000 bytes for 1KB, 1KB per 1000KB, 1GB per 1000MB, the difference between the two made the memory card capacity 'shrink '.
Take a 4GB memory card as an example:
Vendor capacity calculation method: 4GB = 4,000MB = 4,000,000KB = 4,000,000,000 bytes
Converted into operating system calculation method: 4,000,000,000 bytes / 1024 = 3,906,250KB / 1024 = 3,814.697265625MB = 3.8GB
At the same time in the operating system, the memory card through the format, so the system will occupy some space on the memory card, provided to the system file to use, so the operating system to display the memory card capacity and nominal capacity will be different.
We usually use the hard disk and other storage types of equipment are calculated in this way the capacity, the greater the capacity will be greater deviation, such as 40GB hard drive is only about 37GB, which are the normal capacity.
If the product is subject to change without notice!