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    84.
    发明专利
    未知

    公开(公告)号：BR9906949A

    公开(公告)日：2000-10-03

    申请号：BR9906949

    申请日：1999-09-15

    Applicant: QUALCOMM INC

    Inventor： SEGAL MICHAEL L ,  ANTONIO FRANKLIN P ,  ERLENBACH JUDD ,  ELAM SUE ,  WOOTEN KATHLEEN R

    IPC: B65G61/00 ,  G08G1/123 ,  G08G1/127 ,  G08G1/13

    Abstract: Apparatus and method for determining when a vehicle has arrived or departed from a planned or an unplanned stop, while minimizing or completely eliminating driver intervention. The apparatus comprises a mobile communication terminal located onboard a vehicle for receiving destination information, generally using wireless means, from a central facility or hub. A speedometer also located onboard the vehicle determines the speed of the vehicle and a position sensor onboard the vehicle determines the vehicle position. The vehicle speed and position are provided to a processor, also located onboard the vehicle, which uses the speed and position information to determine a vehicle arrival or departure from a planned or unplanned stop. The processor generates an indication of the event, either arrival or departure, directly to the central facility, to the vehicle operator, or both.

    System and method for reducing interference generated by a digital communication device
    86.
    发明专利
    System and method for reducing interference generated by a digital communication device 未知

    公开(公告)号：AU715244B2

    公开(公告)日：2000-01-20

    申请号：AU2731897

    申请日：1997-04-15

    Applicant: QUALCOMM INC

    Inventor： ANTONIO FRANKLIN P ,  GILHOUSEN KLEIN S

    IPC: H04J3/00 ,  H04B1/04 ,  H04B7/26 ,  H04B15/00 ,  H04B15/02

    Abstract: A system and method for reducing radio frequency interference arising in connection with pulsed transmission over time division multiplexed communication channels. In a first embodiment, a subscriber station is nominally assigned all of the slots of each frame of a first transmit channel. By transmitting RF energy substantially continuously, the subscriber station reduces interference arising from pulsed transmission. In a second embodiment, a subscriber station is nominally assigned one or more slots of each frame of a primary channel for conventional transmission of useful information, and is also instructed to continuously transmit RF energy over an auxiliary channel at times other than during the assigned primary channel slots. In this way, interference generated in the vicinity of the subscriber station is reduced due to the substantially continuous transmission of RF energy by the subscriber station. More than one subscriber station may simultaneously utilize the auxiliary channel during reduced interference mode operation.

    Multiplexed address control in a tdm communication system
    88.
    发明专利
    Multiplexed address control in a tdm communication system 未知

    公开(公告)号：SG52761A1

    公开(公告)日：1998-09-28

    申请号：SG1996009124

    申请日：1988-12-21

    Applicant: QUALCOMM INC

    Inventor： ANTONIO FRANKLIN P ,  JACOBS IRWIN M ,  GILHOUSEN KLEIN S

    IPC: H04B7/212 ,  H04J3/00 ,  H04J3/16 ,  H04J3/24 ,  H04Q7/06 ,  H04Q7/08 ,  H04Q7/12 ,  H04Q7/18 ,  H04Q7/38

    Abstract: A message communication system employing one or more centralized communication stations transmitting messages through Earth orbit relay satellites to mobile receivers utilizing Time Division Multiplexed (TDM) communication signals having signal time frames divided into a series of transmission channels. A predetermined number of the channels are designated as address channels with the remainder being used for data transfer. Information transmitted on the address channels is used by receivers to determine both the presence of a message and its corresponding data transmission channel. Each system receiver scans, and tracks only the communication signal address channels until a message addressed to that receiver is detected, at which time the selected receiver changes channels to the designated data channel for reception of the message. Thus, demodulation of the entire communication signal is not required and processing time and power is reduced for the typical waiting condition when messages are not being received. While a message is being received only a portion of the communication signal need to be received, demodulated and decoded. The decoded message is then displayed on a display screen or similar device for the recipient.

    89.
    发明专利
    未知

    公开(公告)号：FI980278A

    公开(公告)日：1998-04-27

    申请号：FI980278

    申请日：1998-02-06

    Applicant: QUALCOMM INC

    Inventor： WEAVER JR LINDSAY A ,  DEAN RICHARD F ,  ANTONIO FRANKLIN P

    IPC: H04L5/16 ,  H04B7/005 ,  H04B7/15 ,  H04B7/26 ,  H04J3/08 ,  H04W16/26 ,  H04W52/40 ,  H04W52/46 ,  H04B

    Abstract: A method and apparatus for time division duplex (TDD) repeating a spread spectrum signal, where spread spectrum signal is comprised of a series of code symbol modulated with a pseudonoise (PN) sequence. The TDD repeater receives intermittently the spread spectrum signal at a location remote from a source supplying the spread spectrum signal. The TDD repeater amplifies and delays the received spread spectrum signal by a predetermined amount. The TDD repeater transmits intermittently the delayed amplified received spread spectrum signal such that the TDD is not receiving the spread spectrum signal when it is transmitting the signal energy.

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