From 1998 to 2000, many companies claimed that they were the first to invent USB flash drives. Include Netac Technology in China, M-Systems in Israel and Trek in Singapore. But the real patent for the basic invention of U disk is Netac of China.
In July 2002, Netac's "Flash Electronic External Storage Method and Device for Data Processing System" (patent number: ZL 99 1 17225.7) was officially authorized by China National Intellectual Property Administration, which filled the gap of invention patent in the field of computer storage in China for 20 years.
The acquisition of this patent right caused a great shock to the entire storage industry, including the Israeli M-Systems Company immediately filed an invalid reexamination with China National Intellectual Property Administration, China, which once became a patent dispute that shocked China and foreign countries in the global flash memory field.
The functions of USB flash drive are:
1, data storage
Storing data is the main function of U disk. Because the USB flash drive uses ROM flash memory, it has the characteristics of not losing data after power failure, which is very different from the RAM in computer memory. Therefore, U disk is often used as a mobile data storage disk.
2. Copy data between different computers
It is precisely because of the convenience of USB flash drive that it is difficult for two computers to copy data without network. At this time, a USB flash drive can help a lot. First, insert a USB flash drive into a computer through a USB interface and send the data to be copied to the USB flash drive; Then unplug the USB flash drive, plug it into the USB interface of another computer and open it, and you can copy the data to another computer.