| 摘要 |
<p>PROBLEM TO BE SOLVED: To make data communication efficient by eliminating automatically undesired communication data. SOLUTION: Compressed image data Da and hold time data H of the data Da (e.g. Ha=125) are stored in a memory section 28 based on a communication signal. Data Db, Hb (e.g. Hb=21) are stored by the communication after the lapse of a time 'T=10'. In this case, the data Ha is equal to 115. Data Dc, Hc (e.g. Hc=47) are stored by the communication after the lapse of a time "T:15". In this case, the data Ha is equal to 100 and the data Hb is equal to 6. After the lapse of a time T=6, the data Hb is equal to zero and the data Db, Hb are automatically deleted. Similarly, when the time elapses and the stored time data is equal to 0, the compressed image data and the stored time data are automatically deleted. Furthermore, since the recording enable area is automatically reserved by the data delete, the possibility of fully occupied data in the memory section 28 is small and then the data communication with high efficiency is attained.</p> |
