Patents Represented by Attorney Kieth G.W. Smith

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  • Data compression for seismic signal data
    Patent number: 5933790
    Abstract: Methods and apparatus are described for compressing seismic data. The data compression is achieved by splitting the data into subsets and applying requantization levels to those subsets which depend on a number representing the subset and on time. Further error criteria ensure that the error introduced by the data compression does not affect the data in a time window representing the listening time. The compression ratio can be improved by applying data encoding techniques to the subsets.
    Type: Grant
    Filed: September 23, 1997
    Date of Patent: August 3, 1999
    Assignee: Schlumberger Technology Corporation
    Inventor: Benjamin Peter Jeffryes