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    • 5. 发明授权
    • PS/2 to USB keyboard adaptor supporting N-key rollover
    • PS / 2支持N键翻转的USB键盘适配器
    • US08260988B2
    • 2012-09-04
    • US12475088
    • 2009-05-29
    • Dang Sheng CaoChang-Ti SungWen Zhang
    • Dang Sheng CaoChang-Ti SungWen Zhang
    • G06F13/12G06F3/00
    • G06F3/023G06F13/387G06F2213/0042
    • A USB converter circuit for converting electrical signals from a key scan circuit (in PS/2 or other formats) into USB signals for a computer while supporting N-key rollover (NKRO) functions. The converter circuit can be implemented as a stand-alone PS/2 to USB keyboard converter or as an integral component of a USB keyboard or KVM switch. The converter circuit includes a converter module that generates keyboard data packets in the USB format having a 16-byte, 64-byte, etc. format representing key press information for up to 8 modifier keys and 14, 62, etc. non-modifier keys, respectively. The converter circuit also includes a USB device controller module which transmits the 16-byte etc. USB keyboard data as one or multiple USB data packets to the host computer. When multiple USB data packets are needed to transmit each keyboard data packet (depending on the USB speed), they are transmitted in consecutive polling periods.
    • USB转换器电路,用于将电子信号从键扫描电路(PS / 2或其他格式)转换为计算机的USB信号,同时支持N键翻转(NKRO)功能。 转换器电路可以实现为独立的PS / 2至USB键盘转换器或USB键盘或KVM切换器的组成部分。 转换器电路包括转换器模块,其以USB格式生成具有16字节,64字节等格式的键盘数据分组,其表示用于多达8个修改键的键按压信息,以及14,62等非修饰键 , 分别。 转换器电路还包括USB设备控制器模块,其将16字节等USB键盘数据作为一个或多个USB数据分组发送到主计算机。 当需要多个USB数据包来传输每个键盘数据包(取决于USB速度)时,它们将以连续的轮询周期传输。
    • 10. 发明申请
    • KVM switch system capable of invoking OSD menu by dedicated key
    • KVM切换系统能够通过专用键调用OSD菜单
    • US20070152972A1
    • 2007-07-05
    • US11325905
    • 2006-01-05
    • Wen Zhang
    • Wen Zhang
    • G06F3/02
    • G06F3/0227G06F3/023
    • A keyboard-video-mouse (KVM) switch system capable of invoking an on-screen display menu or a hotkey menu with one keystroke rather than a sequence of keystrokes. The KVM switch system includes a KVM processor and at least one menu key. The menu key generates at least one trigger signal based on the keystroke and at least one command is issued to the KVM processor. The KVM processor controls an OSD module and an OSD output control circuit according to the received command to invoke the menu. The OSD module generates the video signals constituting the menu (either OSD menu or hotkey menu). The OSD output control circuit enables the video signals of the menu to be displayed on the monitor of the console.
    • 键盘视频鼠标(KVM)切换系统,能够通过一键击而不是一连串的按键来调用屏幕显示菜单或热键菜单。 KVM切换器系统包括KVM处理器和至少一个菜单键。 菜单键基于击键产生至少一个触发信号,并向KVM处理器发出至少一个命令。 KVM处理器根据接收到的命令控制OSD模块和OSD输出控制电路以调用菜单。 OSD模块生成构成菜单的视频信号(OSD菜单或热键菜单)。 OSD输出控制电路使菜单的视频信号显示在控制台的监视器上。