| 摘要 |
PURPOSE:To enable the reception of data from other controllers during the execution of other control processing such as display control processing, etc., by executing the display control processing and communication control processing by interruption routine, and executing the display control processing more preferentially than the communication control processing. CONSTITUTION:The input processing of the key matrix 201 of a control panel 200, the display processing of a display part matrix 202 to light a lamp by a dynamic lighting system, communication processing with an optical system control MPU 400, and the communication processing with an ADF control MPU 320 are executed by interruption processing. Namely, the processing other than picture forming processing is executed by multiple interruption processing, and a plural number of the processing of those are executed by false parallel processing. In this case, the display processing is processed most preferentially in order to keep the period of the lighting of the display part matrix 202 nearly constant in the multiple interruption processing. Thus, the data from other controllers can be received in the case that other control processing such as the display control processing, etc., is being executed. |
