A portable device includes a data file storage device, a camera section with an image pickup function and a schedule management section that manages a user's schedule. The data file storage device includes a picture file storage region for storing picture files and a schedule storage region for storing schedule data. When storing a picture file of a picture picked up by the camera section in the picture file storage region, schedule data that matches the file creation date and time of the picture file is searched among the entire schedule data stored in advance in the schedule storage region. When there is schedule data that matches the file creation date and time, schedule character data that represents the content of the schedule is obtained and a filename and/or a folder name is created based on the schedule character data obtained, or the schedule character data is embedded in EXIF data and stored.