| 摘要 |
An image reproduction apparatus has a basic function (101) at low cost and an additional function as an option (130). In addition, the image reproduction apparatus has capabilities of detecting invalid pixels, removing a black streak, and detecting a blank document page. The image reproduction apparatus includes a base engine/image data controller that includes a process controller (104), a RAM (105) used as a work area, a ROM (106) in which operation commands are stored, a video controller (107) that processes image data and controls the flow of image data, and a I/O controller (108) that monitors and controls I/Os of various devices such as drivers or sensors, wherein those parts are connected via a CPU bus (103). The image reproduction apparatus can be extended into the form of a digital multifunction device by connecting a controller board to the base engine/image data controller via a parallel bus (120). <IMAGE>
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