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    1.
    发明专利
    未知

    公开(公告)号：NO20040172L

    公开(公告)日：2004-02-26

    申请号：NO20040172

    申请日：2004-01-15

    Applicant: INPUT OUTPUT INC

    Inventor： BEHN LAWRENCE P ,  DOWNEY JR JOHN C ,  CHESTER JOHN ,  DEKKERS LEO M ,  ELDER KEITH ,  ISELI JERRY

    IPC: G01V1/22 ,  H01R9/03

    Abstract: A seismic data acquisition system includes a connector housing and a mating electrical circuitry module. A single interface couples electrical circuitry housed in the electrical circuitry module to one or more signal data carriers that are consolidated at a single location in the connector housing. Preferably, the connector housing and electrical circuitry module each have a substantially contaminant-free interior regardless of whether these two parts are mated. An alternate connector housing has two plug casings, each of which are provided with a plug. A complementary alternate electrical circuitry module includes two receptacles complementary to the plugs and an interior space for holding the electrical circuitry. A locking pin disposed within the plug casing selectively engages the electrical circuitry module. A method for establishing communication between electrical circuitry and the carriers and external devices includes providing a single communication interface between the carrier and the electrical circuitry.

    3.
    发明专利
    未知

    公开(公告)号：NO20023346L

    公开(公告)日：2002-09-10

    申请号：NO20023346

    申请日：2002-07-11

    Applicant: INPUT OUTPUT INC

    Inventor： BYERLY KENT A ,  DOWNEY JR JOHN C ,  KRUSE RALPH ,  BISHOP ALLEN J

    IPC: G01V1/22 ,  G08C15/00

    Abstract: A two-conductor bidirectional digital telemetry interface between a seismic sensor acquisition/conversion module and a seismic data collection module. The data collection module is configured as a master electronics device and the sensor acquisition/conversion module is configured as a slave electronics device in the telemetry system. The master device provides power to the slave device over the two conductors. The master device transmits portions of commands to the slave device at a first time and the slave device transmits portions of a digital seismic data packet to the master at a different second time in a fixed-duration frame. The frames are transmitted at regular intervals. The outbound commands and inbound data are encoded by block codes. A phase-locked loop in the slave is locked to a master clock in the master by deriving a clock and a sync point from the block-coded commands it receives from the master. The block code representing each command bit minimizes dc drift and provides a level transition in the command that can be used to maintain synchronism between master and slave.

    5.
    发明专利
    未知

    公开(公告)号：NO20023346D0

    公开(公告)日：2002-07-11

    申请号：NO20023346

    申请日：2002-07-11

    Applicant: INPUT OUTPUT INC

    Inventor： DOWNEY JR JOHN C ,  KRUSE RALPH ,  BISHOP ALLEN J ,  BYERLY KENT A

    IPC: G01V1/22 ,  G08C15/00 ,  G01V

    Abstract: A two-conductor bidirectional digital telemetry interface between a seismic sensor acquisition/conversion module and a seismic data collection module. The data collection module is configured as a master electronics device and the sensor acquisition/conversion module is configured as a slave electronics device in the telemetry system. The master device provides power to the slave device over the two conductors. The master device transmits portions of commands to the slave device at a first time and the slave device transmits portions of a digital seismic data packet to the master at a different second time in a fixed-duration frame. The frames are transmitted at regular intervals. The outbound commands and inbound data are encoded by block codes. A phase-locked loop in the slave is locked to a master clock in the master by deriving a clock and a sync point from the block-coded commands it receives from the master. The block code representing each command bit minimizes dc drift and provides a level transition in the command that can be used to maintain synchronism between master and slave.

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