| 摘要 |
<p>PROBLEM TO BE SOLVED: To realize prevention of a theft in advance by allowing only a regular user entering a correct password to use freely all functions of the recorder. SOLUTION: Image processing circuits 5, 19 apply image quality deterioration processing to an image consisting of video signals obtained by image pickup. A data storage memory 16 stores received data independently of power interruption. A data entry section 10 enters a password having been stored in advance to the data storage memory 16 by a regular user, time data such as recorder use time data and a password required at any time to the data storage memory 16. A CPU 8 controls image quality deterioration processing of an image processing circuit 19 with respect to an image depending on the presence of excess of the integration power application time data backed up in the data storage memory 16 with respect to the recorder use available time data based on the comparison result between the password data required at any time and entered by the data entry section 10 and the password data stored in advance in the data storage memory 16 and on the calculation.</p> |
