| 摘要 |
PURPOSE: An expansible image processing board is provided to have excellent expansion by composing various interfaces without the degradation of a data processing speed. CONSTITUTION: A program loading interface(220) connects to a key panel device which generates a key signal. One or more image input terminals(230) receive analog image signals generated in one or more cameras. An image divider(240) assigns a channels to the analog image signal inputted from the image input terminals. An image decoder(290) converts the analog image signal into a digital image signal with a uniform format. An image dedicated data bus(300) converts the digital image signal into a parallel signal, and transmits the parallel signal in a high speed. A ROM(320) stores the key signal inputted through the program loading interface. An external storing medium interface(330) connects to storing media for storing images. A central processor(350) performs a control operation according to a Linux-based embedded program stored in the ROM to display the digital image signal transmitted through the image dedicated data bus. A buffering memory unit(370) temporarily stores data while the central processor reads or writes the data in the storing media. A display unit(380) displays the digital image signal under the control of the central processor.
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