| 摘要 |
<p>PROBLEM TO BE SOLVED: To simultaneously record both analog data and digital data in a single recording medium by recording the digital data inside the recording medium and recording the analog data on an analog data recording plane formed on the external surface of the recording medium. SOLUTION: When driving a truck 2, a memory card 7 forming a recording plane 10 for analog data is mounted to an operation recorder 1. Corresponding to the drive and stop of the truck 2, its car speed is inputted to the operation recorder 2 as operation data. Inside the memory card 7, the operation data are time sequentially recorded in the state of digital data. Simultaneously with this recording, the operation data are time sequentially recorded on a recording plane 10 for analog data of the memory card 7 in the state of analog data by moving a movable recording part 4 of the analog data recording part 3 in prescribed direction along a screw shaft 5 and writing data by cutting ink on the recording plane 10 for analog data with a needle.</p> |
