Panasonic Intellectual Property Management Co., Ltd.

Tsutomu Mori

Takuji Maeda

Masafumi Nosaka

Takeshi Umemoto

An identification system device includes an identification element processing unit that generates identification elements based on sound information including a frequency of a sound source or a frequency of a sound. An ID conversion processing unit that generates an ID based on the sound information, an information generation processing unit generates identification information by associating the ID with the identification elements, a memory unit stores the identification information, and a judgment unit compares the identification information with newly generated identification elements to determine whether or not both are the sound information from the same sound source. The ID conversion processing unit generates the new ID related to the ID when the determination was the sound information from the same sound source, and the information generation processing unit generates a new identification information by associating the new ID with the newly generated identification elements.

Identification system device

A method used in an access module that uses a file system to manage a nonvolatile memory of an information recording module enables an available storage space to be calculated in a short time before file data is recorded, and shortens the time required from initialization of the file system to recording. An access module () manages information about area management of the file system configured in an information recording module in units of fixed-length blocks. A divisional available storage space calculation unit () performs an available storage space calculation process in units of the fixed-length blocks, and completes preparations for recording when detecting a minimum required storage space for recording file data and enables recording of the file data. This shortens the time required from initialization of the file system to recording.

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Osaka, Japan

Tsutomu Mori