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    BATTERY SAVING METHOD AND APPARATUS FOR PROVIDING SELECTIVE RECEIVER POWER SWITCHING
    1.
    发明专利
    BATTERY SAVING METHOD AND APPARATUS FOR PROVIDING SELECTIVE RECEIVER POWER SWITCHING 未知

    公开(公告)号：CA2083946C

    公开(公告)日：1998-06-16

    申请号：CA2083946

    申请日：1991-04-08

    Applicant: MOTOROLA INC

    Inventor： DAVIS WALTER LEE ,  MITTEL JAMES GREGORY

    IPC: H04B1/16 ,  H04W52/02 ,  H04W88/02 ,  H04Q7/18

    Abstract: A battery saving apparatus selectively supplies power to each receiver function of a battery powered communication receiver at predetermined time intervals prior to the reception of coded message signals. The selective supplying of power to each receiver function enables the reception of the coded message signals with each receiver function being powered only as long as is required for each receiver function to stabilize. The predetermined time intervals for each receiver function are programmed into a code plug to provide the capability to change the turn-on times when required.

    MODE TRACKING TRANSDUCER DRIVER FOR A NON-LINEAR TRANSDUCER
    2.
    发明专利
    MODE TRACKING TRANSDUCER DRIVER FOR A NON-LINEAR TRANSDUCER 未知

    公开(公告)号：HK1022073A1

    公开(公告)日：2000-07-21

    申请号：HK00100790

    申请日：2000-02-11

    Applicant: MOTOROLA INC

    Inventor： MITTEL JAMES GREGORY ,  MCKEE JOHN M ,  WEBER DARRELL CURTIS

    IPC: B06B1/04 ,  G08B6/00 ,  H04Q ,  H04R ,  G08B

    Abstract: A mode tracking transducer driver (100) for a non-linear electromagnetic transducer (102) includes a voltage controlled oscillator (104) coupled within a phase lock loop to a transducer driver (106) and a mode detector (112, 108). The voltage controlled oscillator (104) generates a variable frequency output signal, and is responsive to a frequency control signal for controlling the frequency of the output signal. The transducer driver (106) generates a transducer drive signal (502) which is coupled to the non-linear electromagnetic transducer (102) to generate a tactile alert. The mode detector (112, 108) detects a mode change between at least the first operating mode and the second operating mode of the non-linear electromagnetic transducer (102), and in response thereto generates the frequency control signal (118) which establishes a quasi-resonant frequency (204) at which the tactile energy delivered by the non-linear electromagnetic transducer (102) is maximized.

    4.
    发明专利
    未知

    公开(公告)号：AT153199T

    公开(公告)日：1997-05-15

    申请号：AT90902718

    申请日：1990-01-05

    Applicant: MOTOROLA INC

    Inventor： GRANDFIELD WALTER JOSEPH ,  MITTEL JAMES GREGORY ,  DAVIS WALTER LEE

    IPC: H03L7/00 ,  H03B5/04 ,  H03B5/12 ,  H03B5/36 ,  H03D7/00 ,  H03D7/12 ,  H04B1/16 ,  H04B1/26 ,  H04B1/10 ,  H04B15/06 ,  H03L5/00

    Abstract: A heterodyne stage of a receiver which includes a conventional mixer circuit and local oscillator circuit further includes a differential amplifier circuit which measures the amplitude of the injection signal generated by the local oscillator circuit and controls it precisely to a desired reference level by adjusting the current bias supply to the local oscillator circuit within a banded range to ensure start-up of the local oscillator upon energization and to protect against loss of injection signal under all operating conditions. The differential amplifier circuit provides for a precise amplitude reference setting and sufficient closed-loop gain for controlling the amplitude of the injection signal with a minimum of error between the measured and reference values.

    Mode tracking transducer driver for a non-linear transducer
    6.
    发明专利
    Mode tracking transducer driver for a non-linear transducer 未知

    公开(公告)号：AU4077097A

    公开(公告)日：1998-03-26

    申请号：AU4077097

    申请日：1997-08-20

    Applicant: MOTOROLA INC

    Inventor： MITTEL JAMES GREGORY ,  MCKEE JOHN M ,  WEBER DARRELL CURTIS

    IPC: B06B1/04 ,  G08B6/00 ,  H04Q1/00 ,  H04R25/00 ,  G08B5/22

    Abstract: A mode tracking transducer driver (100) for a non-linear electromagnetic transducer (102) includes a voltage controlled oscillator (104) coupled within a phase lock loop to a transducer driver (106) and a mode detector (112, 108). The voltage controlled oscillator (104) generates a variable frequency output signal, and is responsive to a frequency control signal for controlling the frequency of the output signal. The transducer driver (106) generates a transducer drive signal (502) which is coupled to the non-linear electromagnetic transducer (102) to generate a tactile alert. The mode detector (112, 108) detects a mode change between at least the first operating mode and the second operating mode of the non-linear electromagnetic transducer (102), and in response thereto generates the frequency control signal (118) which establishes a quasi-resonant frequency (204) at which the tactile energy delivered by the non-linear electromagnetic transducer (102) is maximized.

    MODE TRACKING TRANSDUCER DRIVER FOR A NON-LINEAR TRANSDUCER
    9.
    发明公开
    MODE TRACKING TRANSDUCER DRIVER FOR A NON-LINEAR TRANSDUCER 失效
    TREIBERFÜRWANDLERMODUSNACHFÜHRUNGFÜRNICHTLINEAREN WANDLER

    公开(公告)号：EP0931421A4

    公开(公告)日：2001-06-20

    申请号：EP97938450

    申请日：1997-08-20

    Applicant: MOTOROLA INC

    Inventor： MITTEL JAMES GREGORY ,  MCKEE JOHN M ,  WEBER DARRELL CURTIS

    IPC: B06B1/04 ,  G08B6/00 ,  H03L7/00

    CPC classification number: G08B6/00

    Abstract: A mode tracking transducer driver (100) for a non-linear electromagnetic transducer (102) includes a voltage controlled oscillator (104) coupled within a phase lock loop to a transducer driver (106) and a mode detector (112, 108). The voltage controlled oscillator (104) generates a variable frequency output signal, and is responsive to a frequency control signal for controlling the frequency of the output signal. The transducer driver (106) generates a transducer drive signal (502) which is coupled to the non-linear electromagnetic transducer (102) to generate a tactile alert. The mode detector (112, 108) detects a mode change between at least the first operating mode and the second operating mode of the non-linear electromagnetic transducer (102), and in response thereto generates the frequency control signal (118) which establishes a quasi-resonant frequency (204) at which the tactile energy delivered by the non-linear electromagnetic transducer (102) is maximized.

    Abstract translation: 用于非线性电磁换能器（102）的模式跟踪换能器驱动器（100）包括在锁相环内耦合到换能器驱动器（106）和模式检测器（112,108）的压控振荡器（104）。 压控振荡器（104）产生可变频率输出信号，并且响应于频率控制信号来控制输出信号的频率。 换能器驱动器（106）产生耦合到非线性电磁换能器（102）的换能器驱动信号（502）以生成触觉警报。 模式检测器（112,108）检测非线性电磁换能器（102）的至少第一操作模式与第二操作模式之间的模式改变，并且响应于此而生成频率控制信号（118），其建立 准共振频率（204），由非线性电磁换能器（102）输送的触觉能量在该准共振频率（204）处被最大化。

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