公开(公告)号：US20160370486A1

公开(公告)日：2016-12-22

申请号：US15183979

申请日：2016-06-16

Applicant: SERCEL

Inventor： Emmanuel Senechal ,  Fatima Ghanem Elkorso

IPC: G01V1/52 ,  H04B3/50 ,  G01V1/18 ,  H04B3/32 ,  E21B47/12 ,  G01V1/22

CPC classification number: G01V1/52 ,  E21B47/12 ,  G01V1/18 ,  G01V1/22 ,  H04B3/28 ,  H04B3/30 ,  H04B3/32 ,  H04B3/50

Abstract: A method is provided for transmitting signals on a multi-conductor cable (12) formed from a plurality of conductors (1-7) surrounded by an armor (10), the plurality of conductors having a central conductor (7) surrounded by a first peripheral layer of conductors (1-6) with an even number of conductors symmetrically arranged around the central conductor. The two following transmission modes are carried out simultaneously: a common mode (TX1) that uses the central conductor (7) with a return on the armor (10), for transmitting a first signal (s1); and a differential mode (TX2) between a first path comprising all odd rank conductors (1,3,5) of the peripheral layer and a second path comprising all even rank conductors (2,4,6) of the peripheral layer, for transmitting a second signal (s2).

Abstract translation: 提供一种用于在由由铠装（10）包围的多个导体（1-7）形成的多导体电缆（12）上传输信号的方法，所述多个导体具有由第一 具有偶数个导体的导体（1-6）的外围层，围绕中心导体对称布置。 同时执行以下两种传输模式：使用具有在装甲（10）上的返回的中心导体（7）用于传送第一信号（s1）的共模（TX1）; 以及包括外围层的所有奇数级导体（1,3,5）的第一路径和包括外围层的所有偶数级导体（2,4,6）的第二路径之间的差分模式（TX2），用于传输 第二信号（s2）。

公开(公告)号：US10274629B2

公开(公告)日：2019-04-30

申请号：US15183979

申请日：2016-06-16

Applicant: SERCEL

Inventor： Emmanuel Senechal ,  Fatima Ghanem Elkorso

IPC: G01V1/52 ,  G01V1/22 ,  E21B47/12 ,  H04B3/28 ,  H04B3/30 ,  G01V1/18 ,  H04B3/32 ,  H04B3/50

Abstract: A method is provided for transmitting signals on a multi-conductor cable (12) formed from a plurality of conductors (1-7) surrounded by an armor (10), the plurality of conductors having a central conductor (7) surrounded by a first peripheral layer of conductors (1-6) with an even number of conductors symmetrically arranged around the central conductor. The two following transmission modes are carried out simultaneously: a common mode (TX1) that uses the central conductor (7) with a return on the armor (10), for transmitting a first signal (s1); and a differential mode (TX2) between a first path comprising all odd rank conductors (1,3,5) of the peripheral layer and a second path comprising all even rank conductors (2,4,6) of the peripheral layer, for transmitting a second signal (s2).

公开(公告)号：US09823368B2

公开(公告)日：2017-11-21

申请号：US14968991

申请日：2015-12-15

Applicant: SERCEL

Inventor： Emmanuel Senechal

IPC: G01V1/32 ,  H03M1/12 ,  G01V1/24 ,  H03K5/00

CPC classification number: G01V1/32 ,  G01V1/24 ,  G01V2200/12 ,  H03K5/00006 ,  H03M1/12

Abstract: A system and method for adjusting a clock signal of a seismic data acquisition system. The system includes a data acquisition device having an oscillator that generates a clock signal; a clock adjustment module that receives a time reference signal and the clock signal and outputs an adjusted clock signal; and an analog-to-digital convertor configured to transform analog data into digital data having a sampling rate (FDATA). A sampling frequency (fADC) of the analog-to-digital convertor is selected to be at least twice the sampling rate (FDATA).