| 摘要 |
A method of controlling a display device, e.g. a CRT, comprises maintaining an off-mode when electric power is supplied to the display device in order to determine the state of operation mode data stored in an EEPROM (7). Said determination involves comparing, in said off-mode, a predetermined identification information, which is also stored in the EEPROM (7), with a reference identification information stored in a ROM (5) of a microcomputer (3), the microcomputer (3) being normally used to operate the display device based on said operation mode data. If the comparison fails, the display device remains in the off-mode and generates a warning, otherwise the display device enters a run-mode. With this configuration, drive circuit of the display device can be prevented from breaking down as a result of using corrupted operation mode data. The microcomputer (3) may also be used to control storing of said operation mode data to said EEPROM (7) from an input means (9), said storing taking place via e.g. a display data channel (DDC). <IMAGE> |
