Patents Assigned to Vibration Technology Limited
  • Seismic data recording
    Publication number: 20090168602
    Abstract: A seismic survey is conducted by positioning an array of remote acquisition units (RAUs) (10). Each of the RAUs (10) records seismic data derived from one or more geophones in digital form in local memory. The data is collected by a harvester unit traversed across the survey territory as by an aircraft (24) using point-multipoint communications, and subsequently transferred from the harvester unit to a central control unit (26).
    Type: Application
    Filed: December 19, 2008
    Publication date: July 2, 2009
    Applicant: Vibration Technology Limited
    Inventors: Steven William Wilcox, John Christopher Whelan, Jonathan Alexander
  • Data transmission system
    Publication number: 20090086797
    Abstract: A data transmission system, particularly for use in seismic data acquisition, transmits digital signals from remote units to a central control unit via a backbone network and root nodes. Data is transmitted wirelessly between the remote units and the root nodes by means of each remote unit having two transceivers, one of which acts as a client and one as an access point. The remote units transmit metrics which enable the adaptive formation of a mesh-like network.
    Type: Application
    Filed: September 8, 2008
    Publication date: April 2, 2009
    Applicant: Vibration Technology Limited
    Inventor: Steven William Wilcox
  • Seismic data acquisition
    Publication number: 20080291783
    Abstract: A seismic system uses a plurality of remote acquisition units in each of which geophone signals in digital form are temporarily stored in a buffer for near-real-time transmission by a transmitter. The whole of the digital data is also stored in a bulk store within the acquisition unit, from which it can be retrieved and transmitted under control of signals received by a receiver. This allows a central control unit to cause lost or low quality data to be retransmitted in a flexible manner.
    Type: Application
    Filed: May 7, 2008
    Publication date: November 27, 2008
    Applicant: Vibration Technology Limited
    Inventors: Steven William Wilcox, John Christopher Whelan, Jonathan Alexander
  • Seismic acquisition system using wireless telemetry
    Patent number: 6219620
    Abstract: A seismic acquisition system divides a survey terrain into a number of cells (14) each containing a cell access node (16) and a number of geophone units (10). The geophone units (10) transmit data in digital form to the respective cell access node (16) by wireless telemetry, and the cell access nodes (16) forward the data to a central control (12) by broadband channels.
    Type: Grant
    Filed: June 16, 1999
    Date of Patent: April 17, 2001
    Assignee: Vibration Technology Limited
    Inventors: William Pentland Park, John Grant Flavell Smith, John Christopher Whelan, David James Hamilton, William Alan Sandham