中科微点-全球专利检索

  1. Login
  2. Sign Up

Search Results

18 records (took 0.019 seconds)

    ELECTRONIC CIRCUIT FOR PORTABLE ELECTRONIC DEVICE
    1.
    发明专利
    ELECTRONIC CIRCUIT FOR PORTABLE ELECTRONIC DEVICE 失效

    公开(公告)号：JPH11284543A

    公开(公告)日：1999-10-15

    申请号：JP35903198

    申请日：1998-12-17

    Applicant: MOTOROLA INC

    Inventor： RABE DUANE ,  ALBERTH WILLIAM P JR ,  VANNATTA LOUIS J

    IPC: H04B1/40 ,  H02J9/00 ,  H02J9/06 ,  H04B1/04 ,  H04B1/16

    Abstract: PROBLEM TO BE SOLVED: To provide an electronic circuit which copes with the necessity of a portable electronic device, further supports it and is especially suitable for low voltage use that accompanies a heavy current pulse requirement. SOLUTION: An electronic circuit 106 of a portable electronic device is provided with energy source interfaces 108 and 114, a load connected to the interfaces 108 and 114, an energy storage circuit having the maximum operation voltage and switch circuits 132 and 140. The circuits 132 and 140 are connected to the energy storage circuit and are connected directly to the interfaces 108 and 114. When a voltage that exceeds the maximum operation voltage exists in the load, the circuits 132 and 140 respond to it and operate so as to switchably separate the energy storage circuit.

    METHOD AND APPARATUS FOR DETECTING SOFTWARE TAMPERING IN A SUBSCRIBER DEVICE
    2.
    发明专利
    METHOD AND APPARATUS FOR DETECTING SOFTWARE TAMPERING IN A SUBSCRIBER DEVICE 未知

    公开(公告)号：AU2003253814A1

    公开(公告)日：2004-02-09

    申请号：AU2003253814

    申请日：2003-07-08

    Applicant: MOTOROLA INC

    Inventor： KOTZIN MICHAEL D ,  RABE DUANE

    IPC: H04B1/69

    Abstract: A subscriber device ( 2 ) includes a long code generator ( 12 ) and a modifier ( 30 ) for generating a spread bit stream with a predetermined error pattern that is transmitted by a transmitter ( 16 ) at the subscriber device ( 2 ) to a base station ( 3 ). The base station ( 3 ) identifies the current subscriber device properties by identifying the error pattern and subsequently compares the current subscriber device properties with a knowledge base of subscriber device software properties associated with the error pattern in the spread bit stream. The knowledge base is stored in a memory source ( 4 ).

    6.
    发明专利
    未知

    公开(公告)号：DE69121040T2

    公开(公告)日：1997-02-20

    申请号：DE69121040

    申请日：1991-04-22

    Applicant: MOTOROLA INC

    Inventor： HIETALA ALEXANDER ,  RABE DUANE

    IPC: H03C3/09 ,  H03L7/197 ,  H03M3/00 ,  H03M7/32

    Abstract: A fractional-N synthesizer employing at least a second order sigma-delta modulator is disclosed. The most significant bits from the output accumulator of the sigma-delta modulator are used as the carry out control for the variable divisor of the loop divider. Modulation to the synthesizer is introduced as part of the digital number input to the sigma-delta modulator and spurious signal output is reduced by selection of a large number as the denominator of the fractional portion of the loop divider divisor.

    Latched accumulator fractional N synthesis with residual¹error reduction
    8.
    发明专利
    Latched accumulator fractional N synthesis with residual¹error reduction 未知

    公开(公告)号：IE913060A1

    公开(公告)日：1992-03-11

    申请号：IE306091

    申请日：1991-08-30

    Applicant: MOTOROLA INC

    Inventor： HIETALA ALEXANDER W ,  RABE DUANE

    IPC: H03L7/183 ,  H03L7/197 ,  H03C3/09

    Abstract: The latched accumulator fractional-N synthesiser has reduced residual error for use in digital radio transceivers. The divisor of the frequency divider (103) of the synthesiser is varied with time by the summation of accumulator carry output digital sequences which result in frequency increments equal to a fraction of the reference frequency. The accumulators (615, 617) are latched so that upon the occurrence of a clock pulse, data is transferred through each accumulator one clock pulse step at a time, so that the delay through the system is equal to that of only one accumulator. The latched output of the second highest order accumulator (619) is subtracted from the latched output of the highest order accumulator (621) and differentiated before being applied to the loop filter (109).

    METODO Y APARATO PARA PROPORCIONAR INFORMACION DE UBICACION.
    9.
    发明专利
    METODO Y APARATO PARA PROPORCIONAR INFORMACION DE UBICACION. 未知

    公开(公告)号：MXPA03003954A

    公开(公告)日：2004-05-24

    申请号：MXPA03003954

    申请日：2001-11-06

    Applicant: MOTOROLA INC

    Inventor： RABE DUANE

    IPC: G01S5/00 ,  H04L29/08 ,  H04W4/02 ,  H04W4/06 ,  H04W12/02 ,  H04W12/10 ,  G01C21/00

    Abstract: Se proporciona un metodo y aparato para proporcionar informacion de ubicacion. Una peticion de ubicacion se recibe (102) de una fuente. Una ubicacion de un dispositivo movil se determina (104). Una pluralidad de descripciones de ubicacion correspondiente a la ubicacion se determina (105). Una descripcion de ubicacion se selecciona (107) de entre las descripciones de ubicacion. La descripcion de ubicacion se proporciona (108) a la fuente de la peticion de ubicacion.

Patent Agency Ranking