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    Method, sensing device and optical pointing device including a sensing device for comparing light intensity between pixels
    43.
    发明授权
    Method, sensing device and optical pointing device including a sensing device for comparing light intensity between pixels 有权
    方法，感测装置和光学指向装置，其包括用于比较像素之间的光强度的感测装置

    公开(公告)号：US06806458B2

    公开(公告)日：2004-10-19

    申请号：US10001963

    申请日：2001-12-05

    申请人： Robert R. Rotzoll ,  Kevin Scott Buescher ,  James Harold Lauffenburger

    发明人： Robert R. Rotzoll ,  Kevin Scott Buescher ,  James Harold Lauffenburger

    IPC分类号： G06M700

    CPC分类号： G06F3/0317

    摘要： There is described a method, a sensing device as well as an optical pointing device including a sensing device for comparing light intensity between pixels. Light intensity between pairs of pixels of a photodetector array is compared as follows. First and second output signals generated by the photosensitive elements of a first and a second pixel of each pair are integrated over time to respectively provide first and second integrated signals. Integration of the first output signal is interrupted at the end of a first time period and the resulting first integrated signal is stored. Integration of the second output signal is continued until the end of a second time period and the resulting second integrated signal is compared to the stored first integrated signal to provide an output signal representative of an edge condition between the first and second pixel.

    摘要翻译： 描述了一种方法，感测装置以及包括用于比较像素之间的光强度的感测装置的光学指向装置。 如下比较光电检测器阵列的像素对之间的光强度。 由每对的第一和第二像素的感光元件产生的第一和第二输出信号随时间被积分以分别提供第一和第二集成信号。 第一输出信号的积分在第一时间段结束时中断，并且存储所得到的第一积分信号。 第二输出信号的积分持续到第二时间周期结束，并且将所得到的第二积分信号与存储的第一积分信号进行比较，以提供表示第一和第二像素之间的边缘条件的输出信号。

    Sensing device for optical pointing devices such as an optical mouse
    44.
    发明授权
    Sensing device for optical pointing devices such as an optical mouse 有权
    用于诸如光学鼠标的光学指向设备的感测装置

    公开(公告)号：US06750846B2

    公开(公告)日：2004-06-15

    申请号：US10001959

    申请日：2001-12-05

    申请人： Robert R. Rotzoll

    发明人： Robert R. Rotzoll

    IPC分类号： G09G508

    CPC分类号： G06F3/0317 ,  G06F3/03543

    摘要： There is described a sensing device for an optical pointing device comprising a plurality of pixels, each one of the pixels comprising a photosensitive element for generating a pixel output signal in response to radiation reflected from an illuminated portion of a surface, the sensing device further comprising processing means for determining, based on said pixel output signals, a measurement of relative motion between the sensing device and the illuminated surface and for generating cursor control signals based on this measurement. The sensing device further comprises circuit means for summing the pixel output signals of subsets of pixels including at least two pixels and for generating, for each of the subsets of pixels, a summed output signal, the processing means determining the measurement of relative motion based on the summed output signals.

    摘要翻译： 描述了一种用于包括多个像素的光学指向装置的感测装置，每个像素包括用于响应于从表面的被照射部分反射的辐射而产生像素输出信号的光敏元件，所述感测装置还包括 处理装置，用于基于所述像素输出信号，确定感测装置与被照射表面之间的相对运动的测量，以及用于基于该测量产生光标控制信号。 感测装置还包括电路装置，用于对包括至少两个像素的像素子像素的像素输出信号进行求和，并且为每个子像素生成相加的输出信号，处理装置基于 相加的输出信号。

    Data communication method using identification protocol
    49.
    发明授权
    Data communication method using identification protocol 失效
    数据通信方法采用识别协议

    公开(公告)号：US5627544A

    公开(公告)日：1997-05-06

    申请号：US619274

    申请日：1996-03-18

    申请人： Charles K. Snodgrass ,  David H. Allen ,  John R. Tuttle ,  Robert R. Rotzoll ,  George E. Pax

    发明人： Charles K. Snodgrass ,  David H. Allen ,  John R. Tuttle ,  Robert R. Rotzoll ,  George E. Pax

    IPC分类号： G01S13/75 ,  G01S13/76 ,  G01S13/78 ,  G06K19/07 ,  G06K19/073 ,  H04L29/12

    CPC分类号： H04L29/12254 ,  G01S13/758 ,  G01S13/765 ,  G06K19/0723 ,  G06K19/073 ,  G06K7/10019 ,  H04L29/12264 ,  H04L29/12292 ,  H04L29/12311 ,  H04L29/1232 ,  H04L29/12783 ,  H04L29/12801 ,  H04L29/12839 ,  H04L61/2038 ,  H04L61/2046 ,  H04L61/2069 ,  H04L61/2084 ,  H04L61/2092 ,  H04L61/35 ,  H04L61/6004 ,  H04L61/6022 ,  G01S13/78

    摘要： A protocol is used to coordinate the use of a common communication medium by one or more interrogating commander stations and an unknown plurality of responding responder stations. Each commander station and each responder station is equipped to broadcast messages and to check for error in received messages. When more than one station attempts to broadcast simultaneously, an erroneous message is received and communication is interrupted. To establish uninterrupted communication, a commander station broadcasts a command causing each responder station of a potentially large first number of responder stations to each select a random number from a known range and retain it as its arbitration number. After receipt of such a command, each addressed responder station transmits a response message containing its arbitration number. Zero, one, or several responses may occur simultaneously. By broadcasting requests for identification to various subsets of the full range of arbitration numbers and checking for an immediate error-free response, a commander station can determine the arbitration number of every responder station capable of communicating at the time. Consequently, a commander station can conduct subsequent uninterrupted communication with each responder station, for example by addressing only one responder station. Responder stations of this invention require minimal logic and circuitry to respond to multiple commander stations.

    摘要翻译： 协议用于协调由一个或多个询问指挥员站和未知的多个响应响应站的公共通信介质的使用。 每个指挥台和每个响应站都配备了广播消息并检查收到的消息中的错误。 当多个站尝试同时广播时，接收到错误的消息并中断通信。 为了建立不间断的通信，指挥台广播一个命令，使每个响应者站的潜在的大的第一个响应站的每一个都从一个已知的范围中选出一个随机数，并将其保留为其仲裁号。 在接收到这样的命令之后，每个寻址响应站发送包含其仲裁号的响应消息。 零，一个或几个响应可能同时发生。 通过向全方位仲裁号码的各种子集广播识别请求，并立即检查无误差的响应，指挥台可以确定当时能够进行通信的每个响应者站的仲裁号码。 因此，指挥台可以进行与每个应答者站的后续的不间断的通信，例如通过仅寻址一个应答站。 本发明的响应站要求最小的逻辑和电路来响应多个指挥台。