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    • 7. 发明授权
    • Drowsiness detection system and method
    • 睡意检测系统及方法
    • US07202792B2
    • 2007-04-10
    • US10291913
    • 2002-11-11
    • Harry ZhangGerald J. WittMatthew R. Smith
    • Harry ZhangGerald J. WittMatthew R. Smith
    • G08B23/00
    • B60K28/066G08B21/06
    • A low-cost system for detecting a drowsy condition of a driver of a vehicle includes a video imaging camera located in the vehicle and oriented to generate images of a driver of the vehicle. The system also includes a processor for processing the images acquired by the video imaging camera. The processor monitors an eye and determines whether the eye is in an open position or a closed state. The processor further determines a time proportion of eye closure as the proportion of a time interval that the eye is in the closed position, and determines a driver drowsiness condition when the time proportion of eye closure exceeds a threshold value.
    • 用于检测车辆驾驶员的困倦状况的低成本系统包括位于车辆中的视频成像摄像机,其被定向成生成车辆驾驶员的图像。 该系统还包括处理器,用于处理由视频成像相机获取的图像。 处理器监视眼睛并确定眼睛是否处于打开位置或关闭状态。 处理器还将眼睛闭合的时间比例确定为眼睛处于关闭位置的时间间隔的比例,并且当眼睛闭合的时间比例超过阈值时确定驾驶员嗜睡状况。
    • 10. 发明申请
    • SYSTEM AND METHOD OF PRIORITIZING TELEPHONY AND NAVIGATION FUNCTIONS
    • 电话和导航功能的系统和方法
    • US20090055088A1
    • 2009-02-26
    • US11844168
    • 2007-08-23
    • Harry ZhangChristopher S. Schreiner
    • Harry ZhangChristopher S. Schreiner
    • G01C21/00
    • G01C21/20H04M1/72572H04M2250/10
    • A system is provided that includes a location determination element [230] to determine a current location of a mobile device [100] of a mobile subscriber. A map database [510] stores mapping information. At least one processor [200] (a) determines navigation directions from the current location to a destination location; (b) determines whether the current location is within a predetermined familiar area; and (c) prioritizes delivery of the navigation directions to the mobile device in response to the mobile subscriber being engaged in a communication via the mobile device at a time that the navigation directions are determined. Only a first type of the navigation directions are provided when the current location is within the predetermined familiar area. At least a second type of navigation directions, different from the first type, are provided when the current location is outside of the predetermined familiar area.
    • 提供了一种系统,其包括确定移动用户的移动设备[100]的当前位置的位置确定元件[230]。 地图数据库[510]存储映射信息。 至少一个处理器[200](a)确定从当前位置到目的地位置的导航方向; (b)确定当前位置是否在预定的熟悉区域内; 以及(c)响应于移动用户在确定导航方向的时间通过移动设备进行通信,优先将导航方向传送到移动设备。 当当前位置在预定的熟悉区域内时,仅提供导航方向的第一类型。 当当前位置在预定熟悉区域之外时,提供与第一类型不同的至少第二类型的导航方向。