Wireless human interface device packet compression system and method for reducing power consumption
    2.
    发明授权
    Wireless human interface device packet compression system and method for reducing power consumption 有权
    无线人机接口设备分组压缩系统和降低功耗的方法

    公开(公告)号:US07660611B1

    公开(公告)日:2010-02-09

    申请号:US11069500

    申请日:2005-03-01

    IPC分类号: H04M1/00

    摘要: A method, system, and computer-readable storage medium are provided for compressing a packet of data sent across a wireless transmission path to reduce power consumption in a wireless input device. The wireless input device preferably includes a human interface device that sends a report that is of variable length and compressed by refraining from transmitting unused bytes of a packet containing the report. Certain byte fields can be swapped, such as a first scan code byte field with a modifier key byte. Also, any reserved bytes that are not used can be removed in order to convert a standard HID report format into the present compressed report format. By removing unused bytes and optimally swapping the more prevalently used byte into the first field while removing any reserved bytes, the compressed report reduces the amount of power consumed to transmit the compressed report, relative to a non-compressed and fixed-length report of conventional HID input devices. A report descriptor maintains the compresses format and provides that format, along with the compressed report, to the USB interface, for example, to recompile the standard report at the input port of, for example, a personal computer. The input device can be, for example, a keyboard and a pointing device. If a pointing device is used, the scroll wheel and button information can be combined into a single byte rather than utilizing two bytes as in conventional HID reports.

    摘要翻译: 提供了一种方法,系统和计算机可读存储介质,用于压缩通过无线传输路径发送的数据分组,以减少无线输入设备中的功耗。 无线输入装置优选地包括人机界面装置,其发送具有可变长度并通过不发送包含报告的分组的未使用字节来压缩的报告。 可以交换某些字节字段,例如具有修饰符键字节的第一个扫描码字节字段。 此外,可以删除任何未使用的保留字节,以便将标准HID报告格式转换为当前的压缩报告格式。 通过删除未使用的字节,并且在删除任何保留字节的同时将更普遍使用的字节最佳地交换到第一字段中,压缩的报告相对于常规的非压缩和固定长度报告减少了传送压缩报告所消耗的功率量 HID输入设备。 报告描述符维护压缩格式,并将该格式与压缩报告一起提供给USB接口,例如,在例如个人计算机的输入端口重新编译标准报告。 输入装置可以是例如键盘和指示装置。 如果使用指示设备,则滚动轮和按钮信息可以组合成单个字节,而不是如常规HID报告那样使用两个字节。

    AIRCRAFT FUTURE POSITION AND FLIGHT PATH INDICATOR SYMBOLOGY
    3.
    发明申请
    AIRCRAFT FUTURE POSITION AND FLIGHT PATH INDICATOR SYMBOLOGY 失效
    飞机未来位置和飞行道路指示符号

    公开(公告)号:US20050206533A1

    公开(公告)日:2005-09-22

    申请号:US10394934

    申请日:2003-03-22

    IPC分类号: G01C21/00 G01C23/00

    CPC分类号: G01C23/00

    摘要: A programmable symbology is provided that defines a series of geometric forms in the visual field of a pilot. The symbology includes a virtual representation of a predicted flight path of the aircraft and a virtual representation of a projected contact point with an external object, including the ground. The symbology also provides a virtual representation of a predicted flight path of the aircraft that is projected onto the ground below the projected flight path as a ground path predictor. The symbology further provides a critical slowing air speed indicator.

    摘要翻译: 提供了一种可编程符号系统,可在飞行员的视野中定义一系列几何形状。 符号系统包括飞行器的预测飞行路径的虚拟表示以及包括地面的外部物体的投影接触点的虚拟表示。 符号系统还提供飞行器的预测飞行路径的虚拟表示,其被投影到投影飞行路径下方的地面上作为地面路径预测器。 符号系统还提供了一个关键的减速空气速度指示器。