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102 条记录 (耗时 0.022 秒)

    Power saving system for an electronic portable device
    4.
    发明授权
    Power saving system for an electronic portable device 失效
    节能安排的手持式电子装置

    公开(公告)号：EP0939495B1

    公开(公告)日：2004-04-14

    申请号：EP98400460.6

    申请日：1998-02-26

    申请人： MOTOROLA SEMICONDUCTEURS S.A.

    发明人： Abdesselem, Ouelid ,  Khlat, Nadim

    IPC分类号： H04B1/00 ,  H04B1/16 ,  H04M1/72

    CPC分类号： H04W52/029 ,  Y02D70/1222 ,  Y02D70/24

    摘要： A portable electronic device operable in an active mode or an inactive mode comprises a first device operating system (109) for performing device operating functions during the active mode but not the inactive mode and a second device operating system (121) for performing device operating functions during both the active mode and the inactive mode. The first device operating system (109) includes a CPU (111) integrated on a first integrated circuit with a first timing circuit (148) for providing a first timing signal. The second device operating system (121) includes a second timing circuit (134) for generating a second timing signal during at least the inactive mode and being integrated on a second integrated circuit, and a power control circuit (128) coupled to receive the second timing signal for generating a first control signal for deactivating the first device operating system (109) for the inactive mode and for generating a second control signal for activating the first device operating system (109) for the active mode.

    Method and apparatus for performing equalisation in a radio receiver
    10.
    发明公开
    Method and apparatus for performing equalisation in a radio receiver 失效
    用于在无线电接收器均衡的方法和装置

    公开(公告)号：EP0966113A1

    公开(公告)日：1999-12-22

    申请号：EP98401510.7

    申请日：1998-06-19

    申请人： MOTOROLA SEMICONDUCTEURS S.A.

    发明人： Abdesselem, Ouuelid ,  Kurtsieffer, Walter ,  Le Joly, Michel

    IPC分类号： H04B7/005

    CPC分类号： H04L1/20 ,  H04B7/005 ,  H04L25/0212 ,  H04L25/03292 ,  Y02D70/1222 ,  Y02D70/1242 ,  Y02D70/44

    摘要： An equaliser (100) for performing equalisation in a radio receiver receiving a signal from a transmitter, there being a Channel between the transmitter and the receiver having a Channel Impulse Response, CIR. The equaliser (100) comprises CIR estimation means (1) for generating a plurality of tap coefficients; assessment means (2) for assessing the tap coefficients generated by the CIR estimation means and for outputting an assessment signal; and an equaliser algorithm processing unit (5), adapted to receive the assessment signal, for selecting and performing one of a plurality of different equaliser algorithms on the basis of the assessment signal, whereby when one or more of the tap coefficients may be disregarded, an algorithm which requires less processing power may be selected and performed in preference to an algorithm which considers all of the coefficients generated by the CIR estimation means (1).