| 摘要 |
PURPOSE: A USB device and a USB system including the same are provided to unload only unnecessary functional drivers in a changed mode, and additionally load a new necessary functional driver, thereby increasing efficiency of the functional drivers. CONSTITUTION: A first memory(110) stores functional drivers. A second memory(120) loads the functional drivers from the first memory in a first operation. The second memory maintains a state in which the functional drivers are loaded in a second operation. The second memory additionally loads other functional drivers from the first memory. The second memory unloads the function drivers, which excludes the function drivers in the second operation, from the second memory. |
