Patent ID: 8676043

Claim:
A gateway server used in a system for reading video data items included in a video content from a storage medium by a reading unit to record the video data items on a video server, the video data items being recorded in corresponding first logical blocks in the storage medium, wherein the reading unit which is connected to the storage medium to generate a setting signal, reads first management information including first physical addresses specifying blocks where the video data items are recorded in response to the setting signal, and reads the video data items from the first logical blocks, the video server which includes second logical blocks to record the video data items transferred from the reading unit in the second logical blocks, and stores second management information including second physical addresses specifying blocks where the video data items are recorded, said gateway server comprising: a memory which stores third management information including the first or second physical addresses; and a controller which writes the first physical addresses included in the first management information as the third management information in the memory in response to the setting signal, updates the first physical addresses included in the third management information to the second physical addresses upon reception of the video data items by the video server from the reading unit, outputs the video data items read from the reading unit if the third management information includes the first physical addresses, and outputs the video data items read from the video server if the third management information includes the second physical addresses in response to a read request for the video content including the video data items from an external device.