Abstract: A data writing method, a hard disc module, and a data writing system for writing data into the hard disc module are provided, wherein the hard disc module includes a plurality of memory units. The data writing method includes the following steps. A cache data is received and a data class of the cache data is determined. If the data class of the cache data belongs to a first type, the cache data is distributed and written to the memory units. If the data class of the cache data belongs to a second type, the cache data is written to one of the memory units.

Abstract: A caching method and a caching system using dual disks, adapted to an electronic apparatus having a first storage unit and a second storage unit, are provided, in which an access speed of the second storage unit is higher than that of the first storage unit. In the method, a data access to the first storage unit is monitored, a data category of the data in an access address of the data access is identified and whether the data category belongs to a cache category is determined. If the data category belongs to the cache category, an access count of the data in the access address being accessed is accumulated and whether the accumulated access count is over a threshold is determined. If the access count is over the threshold, the data in the access address is cached to the second storage unit.

Abstract: A data writing method, a hard disc module, and a data writing system for writing data into the hard disc module are provided, wherein the hard disc module includes a plurality of memory units. The data writing method includes the following steps. A cache data is received and a data class of the cache data is determined. If the data class of the cache data belongs to a first type, the cache data is distributed and written to the memory units. If the data class of the cache data belongs to a second type, the cache data is written to one of the memory units.

Abstract: A caching method and a caching system using dual disks, adapted to an electronic apparatus having a first storage unit and a second storage unit, are provided, in which an access speed of the second storage unit is higher than that of the first storage unit. In the method, a data access to the first storage unit is monitored, a data category of the data in an access address of the data access is identified and whether the data category belongs to a cache category is determined. If the data category belongs to the cache category, an access count of the data in the access address being accessed is accumulated and whether the accumulated access count is over a threshold is determined. If the access count is over the threshold, the data in the access address is cached to the second storage unit.

Abstract: A wireless LAN medium access controller supporting mode change and the mode change method thereof are proposed. A physical layer detects signal strength in the environment and writes a mode index value of the stronger signal into a register. When the written mode index value is different from a mode index value in the communication system, a medium access controller is informed to perform mode change. The physical layer then sends out an interrupt signal to a central processor and sends the mode index value to the central processor for comparison via a DMA module and a memory. An interface module is used to access the mode index value in the memory for providing an external interface for the medium access control layer. When the mode index value doesn't conform to the signal in the environment, a software layer in the medium access controller is used for mode change.

Abstract: A wireless LAN medium access controller supporting mode change and the mode change method thereof are proposed. A physical layer detects signal strength in the environment and writes a mode index value of the stronger signal into a register. When the written mode index value is different from a mode index value in the communication system, a medium access controller is informed to perform mode change. The physical layer then sends out an interrupt signal to a central processor and sends the mode index value to the central processor for comparison via a DMA module and a memory. An interface module is used to access the mode index value in the memory for providing an external interface for the medium access control layer. When the mode index value doesn't conform to the signal in the environment, a software layer in the medium access controller is used for mode change.