The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Sep. 23, 1980
Filed:
Sep. 28, 1978
Carl H Savit, Houston, TX (US);
Western Geophysical Co. of America, Houston, TX (US);
Abstract
A seismic data acquisition system provides seismic signal data samples in multiplexed channel sequential order during a recording cycle. The multiplexed data samples from a recording cycle are demultiplexed by storing the data samples in consecutive order in a memory, having addressable locations, in addressed locations separated by a first desired address increment. The data samples are then extracted from addressed locations that are separated by a second desired address increment. Substantially concurrently, data samples from a subsequent recording cycle are stored in the memory locations vacated by the previously extracted data samples. The data samples from the subsequent recording cycle are demultiplexed by extracting stored data samples from memory locations that are separated by a third desired increment. The above steps are repeated for additional recording cycles, using a different address increment for each extraction step. The extracted demultiplexed data samples may be recorded on an archival storage medium.