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    Power control of a direct sequence CDMA radio
    72.
    发明专利
    Power control of a direct sequence CDMA radio 未知

    公开(公告)号：GB2263026B

    公开(公告)日：1994-09-28

    申请号：GB9224418

    申请日：1992-04-06

    Applicant: MOTOROLA INC

    Inventor： VILMUR RICHARD J ,  METROKA MICHAEL P

    IPC: H04B1/40 ,  H03G3/20 ,  H04B1/04 ,  H04B7/005 ,  H04B7/216 ,  H04B7/26 ,  H04J13/00 ,  H04M11/00 ,  H03G3/00

    Abstract: The power control apparatus of the present invention is comprised of a local oscillator signal path coupled to a mixer (106) through a variable attenuator (107) and an IF signal path coupled to the mixer (106) through two variable attenuators (108 and 109) coupled in series. The IF signal path attenuators (108 and 109) are controlled by digital control circuitry (111) while the local oscillator path attenuator (107) is controlled by the control circuitry through a level shifter (110). The power level of the signal generated by the mixing of these two signals is less than the conducted output of the radiotelephone's power amplifier.

    POWER CONTROL OF A DIRECT SEQUENCE CDMA RADIO
    74.
    发明专利
    POWER CONTROL OF A DIRECT SEQUENCE CDMA RADIO 未知

    公开(公告)号：GB2263026A

    公开(公告)日：1993-07-07

    申请号：GB9224418

    申请日：1992-04-06

    Applicant: MOTOROLA INC

    Inventor： VILMUR RICHARD J ,  METROKA MICHAEL P

    IPC: H04B1/40 ,  H03G3/20 ,  H04B1/04 ,  H04B7/005 ,  H04B7/216 ,  H04B7/26 ,  H04J13/00 ,  H04M11/00

    Abstract: The power control apparatus of the present invention is comprised of a local oscillator signal path coupled to a mixer (106) through a variable attenuator (107) and an IF signal path coupled to the mixer (106) through two variable attenuators (108 and 109) coupled in series. The IF signal path attenuators (108 and 109) are controlled by digital control circuitry (11) while the local oscillator path attenuator (107) is controlled by the control circuitry through a level shifter (110). The power level of the signal generated by the mixing of these two signals is less than the conducted output of the radiotelephone's power amplifier.

    75.
    发明专利
    未知

    公开(公告)号：MX9205290A

    公开(公告)日：1993-03-01

    申请号：MX9205290

    申请日：1992-09-17

    Applicant: MOTOROLA INC

    Inventor： LEVINE STEPHEN N ,  METROKA MICHAEL P

    IPC: H04L1/00 ,  H04L1/08 ,  H04L1/18 ,  H04J1/00

    Abstract: The extended error correction process of the present invention error corrects a data message that has been transmitted a plurality of times. The process first receives the data message at least twice, logically combining the first and second messages received to form an error indication word. The error indication word is then used to locate the error locations in each message after which some of the errors are complemented, depending on the total number of errors found. The message is then decoded and used for transmit power changes, channel reassignment, to release a call, etc.

    COMMUNICATIONS DEVICE WITH VOICE RECOGNITION AND MOVABLE ELEMENT CONTROL INTERFACE
    76.
    发明专利
    COMMUNICATIONS DEVICE WITH VOICE RECOGNITION AND MOVABLE ELEMENT CONTROL INTERFACE 未知

    公开(公告)号：AU626475B2

    公开(公告)日：1992-07-30

    申请号：AU6647390

    申请日：1990-11-01

    Applicant: MOTOROLA INC

    Inventor： METROKA MICHAEL P ,  KROLOPP ROBERT K

    IPC: H01H3/16 ,  H04M1/02 ,  H04M1/27 ,  H04M1/03 ,  H04M11/00 ,  H04M1/00

    Abstract: A portable radiotelephone with an integral voice recognition circuit is disclosed. Control of the voice recognition circuit is achieved with a foldable housing element which, in a closed position, covers an external keypad and control buttons. When the foldable housing element is in an open position, the portable radiotelephone is placed in an off-hook condition, the voice recognition circuit is activated, and the acoustic transducers are coupled to the voice recognition circuit. When the foldable element is in a closed position, the portable radiotelephone is placed in an on-hook condition, the voice recognition circuit is deactivated, and the electroacoustic transducers are coupled to the radiotelephone. A rapid closing and opening of the foldable element results in the voice recognition circuit being deactivated while the portable radiotelephone remains in the off-hook condition.

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