| 摘要 |
<p>PURPOSE:To precisely record operation data in a period when a memory card is not inserted by discriminating whether the non-insertion of the memory card occurs in the same travel date or not and recording it in the memory card when the memory card is inserted. CONSTITUTION:When a vehicle travels without inserting the memory card 1 and it is inserted again at a certain time while the vehicle travels, it is judged whether operation data is recorded in the card 1 or not. When the card is not newly used, operation data recorded in the card 1 are judged to be the same travel date or not. When it is 'NO', operation data till the previous day are recorded and a new recording address is set. Then, the integrated travel distance of RAM 11 is transferred to the address of the integrated travel distance of the card 1. When they are the same travel date, the difference of the integrated travel distance between RAM 11 and the card 1 is added to a travel distance area without card in the card 1. Thus, travel distance data of the travel period without card in the same travel date is recorded in the designation address of the card 1 as the difference of the integrated travel distance between RAM 11 and the card 1.</p> |
