The accumulation device, in the accumulation device which accumulates

摘要

When the data where accumulation period is restricted by the control information of the copy accumulating to installation and removal possible record medium at one time, although that data is encoded, the encoding data is decoded, the particular data exceeding the approved time limit of a time accumulation information of necessary decoding (the cipher key) by keeping on device side, try not to be able to utilize. The accumulation device as the data where accumulation period is restricted removable record medium outside installation and removal possibly you connect input/output I/F and by the control information of the copy and the control information of the said copy (the image data etc) the encoding section which encodes the reception section which is received and the data which is received and the data which is encoded are accumulated to removable record medium, information of decoding which is necessary in order to decode the data which encodes (the cipher key) and has with the control section which is accumulated outside removable record medium inside the accumulation device. Because of this, the aforementioned data which is accumulated to removable record medium becomes reproducible with only the accumulation device.