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    METHOD AND STRUCTURE FOR SYNCHRONIZING SIGNAL
    1.
    发明专利
    METHOD AND STRUCTURE FOR SYNCHRONIZING SIGNAL 失效

    公开(公告)号：JPH10112704A

    公开(公告)日：1998-04-28

    申请号：JP27397397

    申请日：1997-09-19

    Applicant: MOTOROLA INC

    Inventor： FORD DAVID K ,  JEFFREY PHILIP A ,  PHAM PHUC C

    IPC: G06F13/42 ,  H04L7/027 ,  H04L7/033

    Abstract: PROBLEM TO BE SOLVED: To synchronize a serial data signal with a clock signal and to transmit serial data with a single channel at a high speed. SOLUTION: Serial data is synchronized with a clock signal in a synchronizing circuit 10. Synchronization is accomplished by generating plural delayed things of the serial data signal by using delaying elements 21 to 27 which are serially connected. A delayed serial data signal is sampled by using a set of flip-flops 11 to 18. A sampled and delayed data signal which appears at an output of each flip-flop of a set of flip-flops 11 to 18 is used to decide which delayed data signal aligns the closest to a clock signal. An output of a multiplexer 40 is an alignment serial data signal. Further, a drift correcting circuit always monitors and corrects an alignment between the clock signal and the alignment serial data signal.

    RADIOTELEPHONE CONTROLLER CONFIGURED FOR CORESIDENT SECURE AND NONSECURE MODES
    4.
    发明专利
    RADIOTELEPHONE CONTROLLER CONFIGURED FOR CORESIDENT SECURE AND NONSECURE MODES 未知

    公开(公告)号：CA2033651A1

    公开(公告)日：1991-07-06

    申请号：CA2033651

    申请日：1991-01-04

    Applicant: MOTOROLA INC

    Inventor： MUELLNER GRAZYNA E ,  PINI RAFAELE ,  CASHEN DENNIS ,  MARRY PATRICK J ,  FORD DAVID K

    IPC: H04W88/02 ,  H04B1/40

    Abstract: A controller (105) for a radiotelephone (100) having the capability of operation in both a secure mode for call authorization and a nonsecure mode for user interface is disclosed. The nonsecure mode and secure mode of operation are both resident in a single microcontroller (201) which runs the nonsecure operations until a requirement for the secure operation is requested during call placement. The nonsecure mode is disabled during the period of time the secure mode is operational and is reenabled upon completion of the secure mode operation. The secure mode cannot be accessed externally to the microcontroller (201).

    5.
    发明专利
    未知

    公开(公告)号：AT216545T

    公开(公告)日：2002-05-15

    申请号：AT91904265

    申请日：1991-01-22

    Applicant: MOTOROLA INC

    Inventor： KOBYLARZ DANIEL E ,  FORD DAVID K

    IPC: H04B7/26 ,  H04M1/60 ,  H04M9/08 ,  H04M1/72 ,  H04R3/02

    Abstract: A process to reduce the howl condition in a radiotelephone when the microphone picks up audio from the speaker. The condition is detected by first lowering the speaker volume (103) and measuring the microphone volume for a corresponding decrease (104). The speaker volume is then increased (105) and the microphone volume is again measured for a corresponding increase (106). If the microphone volume follows the speaker volume, a howl condition has been detected. To eliminate the condition without the volume fluctuations being noticed by the parties conversing, the microphone and speaker volume is reduced in small increments (114) until the condition is eliminated.

    7.
    发明专利
    未知

    公开(公告)号：FI102928B1

    公开(公告)日：1999-03-15

    申请号：FI906424

    申请日：1990-12-28

    Applicant: MOTOROLA INC

    Inventor： MUELLNER GRAZYNA E ,  PINI RAFAELE ,  CASHEN DENNIS ,  MARRY PATRICK J ,  FORD DAVID K

    IPC: H04W88/02 ,  H04B7/00

    Abstract: A controller (105) for a radiotelephone (100) having the capability of operation in both a secure mode for call authorization and a nonsecure mode for user interface is disclosed. The nonsecure mode and secure mode of operation are both resident in a single microcontroller (201) which runs the nonsecure operations until a requirement for the secure operation is requested during call placement. The nonsecure mode is disabled during the period of time the secure mode is operational and is reenabled upon completion of the secure mode operation. The secure mode cannot be accessed externally to the microcontroller (201).

    8.
    发明专利
    未知

    公开(公告)号：DE69123608T2

    公开(公告)日：1997-06-12

    申请号：DE69123608

    申请日：1991-01-07

    Applicant: MOTOROLA INC

    Inventor： MUELLNER GRAZYNA E ,  PINI RAFELE ,  CASHEN DENNIS ,  MARRY PATRICK J ,  FORD DAVID K

    IPC: H04W88/02 ,  H04Q7/20 ,  H04M1/72

    Abstract: A controller (105) for a radiotelephone (100) having the capability of operation in both a secure mode for call authorization and a nonsecure mode for user interface is disclosed. The nonsecure mode and secure mode of operation are both resident in a single microcontroller (201) which runs the nonsecure operations until a requirement for the secure operation is requested during call placement. The nonsecure mode is disabled during the period of time the secure mode is operational and is reenabled upon completion of the secure mode operation. The secure mode cannot be accessed externally to the microcontroller (201).

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