22.
    发明专利
    未知

    公开(公告)号:ES2116985T3

    公开(公告)日:1998-08-01

    申请号:ES90916542

    申请日:1990-11-01

    Applicant: MOTOROLA INC

    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.

    23.
    发明专利
    未知

    公开(公告)号:DE68927024D1

    公开(公告)日:1996-10-02

    申请号:DE68927024

    申请日:1989-05-19

    Applicant: MOTOROLA INC

    Abstract: A portable radiotelephone with control switch disabling is disclosed. A flip element (104) which contains a microphone and covers a keypad (110) and other control buttons when in a closed position also activates a hookswitch (306). When the hookswitch and microprocessor indicate that the flip element is in a closed position, the on/off switch cannot be activated to turn the portable radiotelephone on or off and switches which control volume level are deactivated.

    24.
    发明专利
    未知

    公开(公告)号:AT142068T

    公开(公告)日:1996-09-15

    申请号:AT89109012

    申请日:1989-05-19

    Applicant: MOTOROLA INC

    Abstract: A portable radiotelephone with control switch disabling is disclosed. A flip element (104) which contains a microphone and covers a keypad (110) and other control buttons when in a closed position also activates a hookswitch (306). When the hookswitch and microprocessor indicate that the flip element is in a closed position, the on/off switch cannot be activated to turn the portable radiotelephone on or off and switches which control volume level are deactivated.

    Extended error correction of a transmitted data message

    公开(公告)号:GB2264846B

    公开(公告)日:1995-11-15

    申请号:GB9309676

    申请日:1992-07-30

    Applicant: MOTOROLA INC

    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.

    Mixed-mode transceiver system
    28.
    发明专利

    公开(公告)号:GB2254523B

    公开(公告)日:1995-04-19

    申请号:GB9203072

    申请日:1992-02-11

    Applicant: MOTOROLA INC

    Abstract: A radiotelephone system comprised of a radiotelephone-pair suitably intercoupled theretogether to permit transfer of data, such as NAM information, therebetween. A first of the radiotelephone-pair comprises a radiotelephone of conventional construction. A second radiotelephone of the radiotelephone-pair comprises a radiotelephone having circuitry to transmit efficiently an information signal upon a cellular, communication system of increased capacity. The data sequence contained in the first radiotelephone is transferred to the second radiotelephone to permit a communication link to be formed between the second radiotelephone and a cellular, communication network.

    30.
    发明专利
    未知

    公开(公告)号:BR9205268A

    公开(公告)日:1993-07-20

    申请号:BR9205268

    申请日:1992-04-06

    Applicant: MOTOROLA INC

    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.

Patent Agency Ranking