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Anonymous
Anonymous asked in 電腦與網際網路程式設計 · 9 years ago

如何做USBto圖像型LCM

我需要一個透過usb輸入影像

然後顯示在LCM上的電路

但不知道該如何做起

Update:

硬體跟軟體的部份我都不是很瞭解

我還只是大一的學生

2 Answers

Rating
  • Chen
    Lv 6
    9 years ago
    Favorite Answer

    first of all, You must understand ISO transfer protocol of USB type.

    and coding program like USBCAM.sys device driver in kernel of WINxp or unix

    and get transfer packet. decoding packet , and put into LCM.

  • 阿明
    Lv 5
    9 years ago

    LCM的電路要有USB傳輸晶片,USB傳輸晶片裡面有燒入這一裝置辨識碼。電腦裡面需要有裝這一LCM的電路USB硬體描述檔和LCM的電路的驅動程式。

    USB接口是即插即用,插入這一種裝置,才動態載入這一裝置驅動程式,每一要插入的USB裝置世界獨一無二裝置辨識碼,電腦需先裝有這USB裝置硬體描述檔,USB插入電腦,電腦比對硬體描述檔的裝置辨識碼,後載入這一裝置驅動程式

    2012-05-28 12:10:18 補充:

    LCM電路假如是實習板,電路那一種的usb晶片和實習板廠商提供驅動程式,寫電腦程式的範例,實習板有些是電腦程式Rs232轉成usb傳輸,實習板usb轉成Rs232。

    電腦Rs232串列傳輸是一種固定Port Address每一COMx插座都固定Port Address,電腦程式只要從Port Address讀寫資料,usb傳輸不一樣,usb鍵盤及滑鼠或是其他設備,插在任何一個usb插座,電腦會掃瞄usb插座辨別插入是什麼設備,載入這一設備 驅動程式連接某Port Address,同一設備插任何一個usb插座,都`連接同一Port Address

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