公开(公告)号：CA2397054C

公开(公告)日：2009-10-13

申请号：CA2397054

申请日：2001-01-10

Applicant: INPUT OUTPUT INC

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

IPC: G01V1/22 ,  G08C15/00

Abstract: A two-conductor bidirectional digital telemetry interface between a seismic sensor acquisition/conversion module (40) and a seismic data collection module (20). The data collection module i s 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 (36). The master 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 (54) in the slave is locked to a master clock (35) m the master by deriving a clock and a sync point from the block-coded commands it receiv es from the master. The block code representing each command bit minimizes de drift and provides a level transition in the comman d that can be used to maintain synchronism between master and slave.

公开(公告)号：CA2397054A1

公开(公告)日：2001-07-19

申请号：CA2397054

申请日：2001-01-10

Applicant: INPUT OUTPUT INC

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

IPC: G08C15/00 ,  G01V1/22

Abstract: A two-conductor bidirectional digital telemetry interface between a seismic sensor acquisition/conversion module (40) and a seismic data collection modu le (20). The data collection module is configured as a master electronics devic e 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 (36). The master device transmit s portions of a digital seismic data packet to the master at a different secon d 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 (54) in the slave is locked to a master clock (35) in th e 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 b e used to maintain synchronism between master and slave.

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.

公开(公告)号：AT293256T

公开(公告)日：2005-04-15

申请号：AT01901951

申请日：2001-01-10

Applicant: INPUT OUTPUT INC

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

IPC: G08C15/00 ,  G01V1/22

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.

公开(公告)号：NO20023346A

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

CPC classification number: G01V1/22

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.