Key Technologies Of The Embedded Crt Colorimeter

This essay focuses on not only the system design, but also the research and completion of the key technology, which are used by embedded CRT colorimeter. It gives some introductions, in hardware, to the designing principles of the electric circuits in embedded processor, storage, LCD, keyboard, power mode, front measuring mode. In software, this article places interpretation on the completion of transplanting embedded operating system—uClinux of third venison into embedded CRT colorimeter. In the environment of uClinux, the setup procedure is introduced in the device driver, interrupted program and applied program, and the actual examples are provided for the keyboard driver program with embedded CRT colorimeter and interrupted program.There are two key technologies settled in this paper: one is embedded Graphic User Interface (GUI), the other is embedded database. In the design of GUI, the problems in 3 layers architecture of GUI are solved; In the core layer, the menu, list frame, check boxes controller and so on are set to become the elements of GUI; with the fixed structure of output, it links the appearance with the inside of GUI elements, which make GUI "less weight" and shows the advantages of easy graphic algorithm, quickness, taking up little resources. In the design of embedded database, it mainly designs the physical mode of embedded system database. In details it adopts the data compress technique to design storage structures of designing field, record and database file.Moreover, it elaborates on the measuring color principles with embedded CRT colorimeter and the transplanting JFFS2 of flash file system. It also illustrates the conversion theories , from analog to digital, ∑-△ technique to programs the application of ∑-△ AD7706 .This article provides reference to the exploitation of embedded instruments, puts forward innovative methods on embedded research members engaged in graph program interface and database.