Semiconductor memory storage apparatus and content data management method

Abstract

A semiconductor memory storage apparatus includes a packetization unit receiving content data includes a plurality of variable-length frames, and adding management data showing frame data inherent information to frame data of each variable-length frame, and further, packetizing the content data storing the frame data and the management data in each fixed-length packet for every variable-length frame, a buffer temporarily storing the content data at a fixed-length packet unit in write / read operation of the content data packetized at the fixed-length packet unit, a storage unit using a non-volatile memory as an information storage medium, and storing the content data supplied from the buffer, and a controller writing / reading content data packetized at the fixed-length packet unit with respect to the storage unit at a fixed-length packet unit.

Description

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS [0002] This application is based on and claims the benefit of priority from a prior Japanese Patent Application No. 2007-205843 filed on Aug. 7, 2007, the entire contents of which are incorporated herein by reference. technical field [0003] The present invention relates to a semiconductor memory storage device that stores content data and the like in a semiconductor memory, and more particularly, to a method for managing content data in the semiconductor memory. Background technique [0004] A storage device using a semiconductor memory as a recording medium is widely used for recording and reproducing information content such as content data, for example, which can be multiplexed at the same time by a plurality of channels or has high-speed random access. In particular, the semiconductor memory storage device has no working part, so the reliability is high. In addition, the storage capacity of the semiconductor memory stor...

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Problems solved by technology

On the other hand, it is easy to increase the capacity of NAND type semiconductor memory, but it is difficult to increase the capacity of NOR type semiconductor memory

However, as the amount of frame data stored in the NAND type semiconductor memory increases, the management data to be stored in the NOR type semiconductor memory also increases.

Therefore, there is a problem that the storage capacity for storing management data is insufficient relative to the storage capacity for storing frame data.

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