US08/941,646 Expired - Lifetime US5978313AĬited By (39) * Cited by examiner, † Cited by third party Publication number Time synchronization for seismic exploration systemĪpplications Claiming Priority (1) Application Numberįamily ID=25476826 Family Applications (1) Application Number
Priority Applications (1) Application Number US08/941,646 Time synchronization for seismic exploration system The method as set froth in claim 20, further comprising the step of the at least one seismic collection device transmitting data collected to a central station. Once the measurement data is collected, the data then may optionally be transferred to a central processing device by, for example, formatting the data into messages and transmitting the messages to the central processing device using block 345.Ģ3. The prespecified time may be transferred via a wireless link, such as a radio link, or preprogrammed into the device 360. Synchronization control logic 330 initiates the seismic data collector 340 to collect seismic data when the prespecified time 350 sent via connection 360 is equal to the time information generated by time control logic 320. The computation of the time from the GPS signals is well known and will not be discussed further herein. Time control logic 320 computes the precise time from the collected positioning signals. The GPS receiver 310 receives the positioning signals recording well known GPS receiver techniques. 3a illustrates a simplified block diagram of one embodiment of a data collection device that operates in accordance with the teachings of the present invention. G01V1/26- Reference-signal-transmitting devices, e.g.G01V1/00- Seismology Seismic or acoustic prospecting or detecting.G01V- GEOPHYSICS GRAVITATIONAL MEASUREMENTS DETECTING MASSES OR OBJECTS TAGS.Anticipated expiration legal-status Critical Status Expired - Lifetime legal-status Critical Current Links Publication of US5978313A publication Critical patent/US5978313A/en Application granted granted Critical Assigned to ABN AMRO BANK N.V., AS AGENT reassignment ABN AMRO BANK N.V., AS AGENT SECURITY AGREEMENT Assignors: TRIMBLE NAVIGATION LIMITED Assigned to TRIMBLE NAVIGATION LIMITED reassignment TRIMBLE NAVIGATION LIMITED RELEASE OF SECURITY INTEREST Assignors: ABN AMRO BANK N.V. AN ASSIGNMENT WAS PREVIOUSLY RECORDED AT REEL 8755, FRAME 0223.
Priority to US08/941,646 priority Critical patent/US5978313A/en Assigned to TRIMBLE NAVIGATION LIMITED reassignment TRIMBLE NAVIGATION LIMITED CORRECTIVE ASSIGNMENT TO CORRECT ASSIGNOR'S NAME. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.) Filing date Publication date Application filed by Trimble Inc filed Critical Trimble Inc Assigned to TRIMBLE NAVIGATION LIMITED reassignment TRIMBLE NAVIGATION LIMITED ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS).
Original Assignee Trimble Inc Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.) Longaker Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.) Expired - Lifetime Application number US08/941,646 Inventor Harold L.
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Google Patents Time synchronization for seismic exploration systemĭownload PDF Info Publication number US5978313A US5978313A US08/941,646 US94164697A US5978313A US 5978313 A US5978313 A US 5978313A US 94164697 A US94164697 A US 94164697A US 5978313 A US5978313 A US 5978313A Authority US United States Prior art keywords seismic time data forth records Prior art date Legal status (The legal status is an assumption and is not a legal conclusion.
Google Patents US5978313A - Time synchronization for seismic exploration system US5978313A - Time synchronization for seismic exploration system