Panasonic Corporation

Panasonic Intellectual Property Management Co., Ltd.

Katsumi Watanabe

Takuji Maeda

Masayuki Toyama

Hirokazu So

Masafumi Nosaka

Yoshinori Nakashima

Provided is a method for stabilizing and increasing the speed of processing for writing a plurality of different-sized files such as a video file and a management file in parallel in the case where the area in a non-volatile memory of an information recording module is managed by a file system. An access module () includes a means for retaining sequential areas in logical block units as areas for writing file data, and a means for realizing file data addition and overwriting by writing data to logical blocks and changing links in a FAT regardless of whether file data addition or overwriting is performed. Writing to the information recording module is performed by writing to sequential addresses in the logical blocks. This realizes the stabilization of and an increase in the file data recording speed by suppressing needless copy processing performed in the information recording modulein the case of recording a plurality of files such as a video file and a management file in parallel.

Access device, information recording device, controller, real time information recording system, access method, and program

An imaging apparatus includes an image unit, a video recording medium configured to store video data generated by the imaging unit, and a controller configured to control recording of the video data in the video recording medium. The video recording medium includes a first recording medium having a data area in which data can be recorded, and at least one second recording medium having first and second data areas in which data can be recorded. The second data area can be written data at a higher speed than a speed for writing data in the first data area. The controller records video data and management data for managing the video data in the first recording medium, using whole data area of the first recording medium. The controller records video data in the second recording medium, using only the second data area of the second recording medium.

Imaging apparatus

Growing community of inventors

Osaka, Japan

Katsumi Watanabe