RADIO SIGNAL RECEIVING APPARATUS WITH A SECURITY CIRCUITRY

    公开(公告)号:CA1161500A

    公开(公告)日:1984-01-31

    申请号:CA388984

    申请日:1981-10-29

    Applicant: MOTOROLA INC

    Inventor: DRAPAC GEORGE

    Abstract: A radio signal receiving apparatus such as a pager with a security circuitry includes operator-controlled switches for providing a plurality of different command signals which are used to actuate the receiving apparatus in a different mode of operation, an interface circuitry with an optional feature circuitry coupled to the receiving circuitry of the apparatus for providing various optional functions such as automatic reset, single/dual function or battery saving functions to the receiving apparatus, and a security circuitry for preventing the receiving apparatus from receiving the incoming signal once tampering of the optional feature security is detected.

    BATTERY SAVING APPARATUS AND METHOD PROVIDING OPTIMUM SYNCHRONIZATION CODEWORD DETECTION

    公开(公告)号:CA2006501A1

    公开(公告)日:1990-08-27

    申请号:CA2006501

    申请日:1989-12-22

    Applicant: MOTOROLA INC

    Abstract: A battery saving apparatus for supplying power to a selective call communication receiver for enabling the detection of a synchronization codeword in data received in a predetermined signaling format comprises circuits for supplying power to the receiver, and for detecting valid data received during a first portion of the first predetermined time interval. Power is maintained to the receiver for the remainder of the first predetermined time interval when valid data is detected in the first portion. A synchronization codeword detector is included for detecting a synchronization codeword. When valid data is subsequently detected following a second portion of the first predetermined time interval and the synchronization codeword is not detected in the first predetermined time interval, power is maintained to the receiver for a second predetermined time interval to further enable detection of the synchronization codeword.

    3.
    发明专利
    未知

    公开(公告)号:DE69026374D1

    公开(公告)日:1996-05-09

    申请号:DE69026374

    申请日:1990-01-05

    Applicant: MOTOROLA INC

    Abstract: The pager receiver including a conventional address decoder, an alert envelope waveform generator, and an alert function mapper is disclosed. The pager is individually and uniquely characterized by programming the alert function mapper to govern the generation of assigned alert annunciation patterns by the waveform generator in response to selected decoded pager addresses and associated functions thereof, and to inhibit alert generation by the waveform generator in response to non-selected decoded pager addresses and associated functions thereof. In one embodiment, the alert signal waveform generator is enabled to respond to the alert function mapper only when the pager address is decoded by the decoder.

    A programmable multi-address pager receiver and method of characterizing same

    公开(公告)号:HK1000757A1

    公开(公告)日:1998-04-24

    申请号:HK97102294

    申请日:1997-12-01

    Applicant: MOTOROLA INC

    Abstract: The pager receiver including a conventional address decoder, an alert envelope waveform generator, and an alert function mapper is disclosed. The pager is individually and uniquely characterized by programming the alert function mapper to govern the generation of assigned alert annunciation patterns by the waveform generator in response to selected decoded pager addresses and associated functions thereof, and to inhibit alert generation by the waveform generator in response to non-selected decoded pager addresses and associated functions thereof. In one embodiment, the alert signal waveform generator is enabled to respond to the alert function mapper only when the pager address is decoded by the decoder.

    5.
    发明专利
    未知

    公开(公告)号:DE69026374T2

    公开(公告)日:1996-10-24

    申请号:DE69026374

    申请日:1990-01-05

    Applicant: MOTOROLA INC

    Abstract: The pager receiver including a conventional address decoder, an alert envelope waveform generator, and an alert function mapper is disclosed. The pager is individually and uniquely characterized by programming the alert function mapper to govern the generation of assigned alert annunciation patterns by the waveform generator in response to selected decoded pager addresses and associated functions thereof, and to inhibit alert generation by the waveform generator in response to non-selected decoded pager addresses and associated functions thereof. In one embodiment, the alert signal waveform generator is enabled to respond to the alert function mapper only when the pager address is decoded by the decoder.

    6.
    发明专利
    未知

    公开(公告)号:AT136416T

    公开(公告)日:1996-04-15

    申请号:AT90902960

    申请日:1990-01-05

    Applicant: MOTOROLA INC

    Abstract: The pager receiver including a conventional address decoder, an alert envelope waveform generator, and an alert function mapper is disclosed. The pager is individually and uniquely characterized by programming the alert function mapper to govern the generation of assigned alert annunciation patterns by the waveform generator in response to selected decoded pager addresses and associated functions thereof, and to inhibit alert generation by the waveform generator in response to non-selected decoded pager addresses and associated functions thereof. In one embodiment, the alert signal waveform generator is enabled to respond to the alert function mapper only when the pager address is decoded by the decoder.

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