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| Number | Title | Issue Date |
| 7286442 | Method and apparatus for seismic data acquisition A marine seismic exploration method and system comprised of continuous recording, self-contained ocean bottom pods characterized by low profile casings. An external bumper is provided to promote ocean bottom coupling and prevent fishing net entrapment. Pods are teth... | 10/23/2007 |
| 7234340 | Apparatus, method, and medium for detecting and discriminating impact sound An apparatus, method, and medium for detecting an impact sound and an apparatus, method, and medium for discriminating the impact sound using the same. The impact sound detecting apparatus includes: an onset detector separating an input signal of a frame unit into a... | 06/26/2007 |
| 6985815 | Instantaneous spectral analysis A method of seismic data processing is described in which a particular wavelet is selected from a plurality of wavelets as being most characteristic of a received seismic signal. A subtracted signal can be determined by subtracting a weighted signal of the particula... | 01/10/2006 |
| 6920083 | Method intended for detection and automatic classification, according to various selection criteria, of seismic events in an underground formation A method for automatic classification, according to various selection criteria, of seismic or microseismic events picked up by seismic receivers coupled with an underground formation under development, according to whether the events are purely of microseismic natur... | 07/19/2005 |
| 5451164 | Method and system for geophysical and geologic modeling A method and system for using sonography to image the internal structure of geophysical and geologic models are disclosed. The sonography system includes a wand having a plurality of piezoelectric elements at an active surface thereof, each coupled to dri... | 09/19/1995 |
| 5112130 | Apparatus and method for measuring relative displacement of objects The present invention relates to a separation measuring method and a separation measuring apparatus for measuring the separation of objects, which have been displaced relatively, by using optical distance measuring equipments, and more particularly to a s... | 05/12/1992 |
| 5047933 | Full wave form restoration of optically digitized seismic traces A method for digitizing seismic traces comprising optically digitizing the seismic sections to produce a digitized image, normalizing the digitized image for brightness to produce a normalized digitized image, geometrically straightening the digitized ima... | 09/10/1991 |
| 4935748 | Blast recorder and method of displaying blast energy A blast recorder and method for monitoring and processing vibrations from blasts, and for displaying the results in a nearly real time basis and in a manner which is easily interpreted by a relatively unskilled field worker and corresponds to a form which... | 06/19/1990 |
| 4885724 | Cableless seismic digital field recorder having on-site seismic data processing capabilities An improved cableless seismic digital recording system is disclosed which records seismic-trace data generated by any type of seismic source, including high energy impulsive seismic sources, such as dynamite, and low energy surface seismic sources, such a... | 12/05/1989 |
| 4879696 | Method and apparatus for initiating seismic data storage in an isolated distributed recording system An improved method and apparatus for initiating seismic data storage in an Isolated Distributed Recording System. An encoded acoustic signal is generated by an acoustic energy source which is detected at an isolated distributed recorder where it is correl... | 11/07/1989 |
| 4807200 | Method and apparatus for gathering seismic data and selectively controlling isolated distributed recorders in an isolated distributed recording system A method and apparatus for selectively controlling isolated distributed recorders in an Isolated Distributed Recording System. Selection and control of isolated distributed recording units comprising a seismic data gathering Isolated Distributed Recording... | 02/21/1989 |
| 4663743 | Seismic data transcription system A transcriber system for receiving previously recorded data in a first medium and outputting the data in a second medium, and which includes at least one input device for receiving the data in the first medium, an output device for outputting the data in ... | 05/05/1987 |
| 4661934 | Ground position controller and method for automatically indicating parameters that spatially cross-reference the locations of seismic spread and source arrays during exploration for hydrocarbons and the like The present invention relates to a ground position controller utilizing a microcomputer system interconnected to a digital field system (DFS) via a system bus, for generating, formatting and displaying information (for insuring integrity of field operatio... | 04/28/1987 |
| 4661935 | Seismic data processing A variable amplitude/phase color seismic display is provided which increases the ease with which interpreters can locate peaks, troughs and other information of interest.... | 04/28/1987 |
| 4639901 | Method for testing cableless seismic digital field recorders Test features are incorporated in an improved cableless seismic digital recording system recorder. The improved recorder facilitates application of earlier cableless seismic digital recording systems to situations in which seismic-trace data is generated ... | 01/27/1987 |
| 4616320 | Seismic strong-motion recorder A digital recorder and method for digitizing and recording seismic events, the recorder being capable of lengthy stand-by periods during which it records lesser events of little interest in a static buffer and then displaces these events with more recent ... | 10/07/1986 |
| 4594692 | Seismic signal generator A system for testing seismic signal recording equipment wherein a test signal is generated which simulates the output of at least one seismic sensing device, and, thereafter, the test signal is applied to the seismic signal recording equipment. The test s... | 06/10/1986 |
| 4355379 | Continuous automatic migration of seismic data with waveform preservation Amplitude-versus-time information of a seismic time section is automatically migrated so that events on the time section are displaced, both vertically and horizontally, into positions on a seismic depth section that correspond to actual spatial positions... | 10/19/1982 |
| 4296484 | Data display system A display system is provided in which the data from a plurality of data channels is displayed on a cathode ray tube (CRT) display device. Automatic gain control is utilized to ensure that essentially the entire screen of the CRT display device is filled e... | 10/20/1981 |
| 4279026 | Seismographic data color display A new and improved method of forming a color graphic display from seismographic input data is disclosed. The input data sequence is processed to obtain the absolute value of each amplitude value and to select the maximum amplitude value of each oscillatio... | 07/14/1981 |
| 4236233 | Interactive multidimensional classification and sorting of seismic segment data The specification discloses a method and system wherein an operator interacts with an automatic data processing and display system to classify and sort subsurface reflective surfaces or segments in a multidimensional context. The technique utilizes a prop... | 11/25/1980 |
| 4229810 | Seismogram display and method A novel seismogram display and method for making same are provided wherein a portion of the areas under certain ones of the positive and negative wavelet lobes of each seismic trace is shaded. Each shaded area originates at or near a null point. The novel... | 10/21/1980 |
| 4227198 | Seismic triggered seismograph A seismic triggered seismograph (10) has a transducer (12) that measures particle vibration along three orthogonal axes and a microphone (14) which measures atmospheric overpressure. The four parameters measured produce signals which are passed through de... | 10/07/1980 |
| 4217593 | Water depth-loran position recorder Apparatus, for use with a chart recording fathometer, for receiving loran C time difference/line of position information and for recording that information in vertical columns on the chart in juxtaposition with water depth information from the fathometer.... | 08/12/1980 |
| 4209855 | Apparatus for controlling the transfer of seismic data from _magnetic tape storage to a photographic recording Multiplexed seismic data representing a plurality of seismic channels intensity modulates each sweep of the electron beam of a cathode-ray tube. Each successive sweep of the electron beam is photographically reproduced on a rotating drum plotter to provid... | 06/24/1980 |
| 4193058 | System for displaying seismic data on a cathode-ray tube Multiplexed seismic data representing a plurality of seismic channels intensity modulates each sweep of the electron beam of a cathode-ray tube. Each successive sweep of the electron beam is photographically reproduced on a rotating drum plotter to provid... | 03/11/1980 |
| 4086600 | Method for producing half-tone, variable-density seismic trace recordings In a seismic data processing system, seismic data in channel-sequential format intensity modulates the electron beam of a cathode-ray tube. A photographic drum plotter provides a recording of the seismic data displayed on the face of the cathode-ray tube.... | 04/25/1978 |
| 4070187 | Color display of data A new and improved color display of geophysical and other scientific and industrial or similar technological data readily and quickly obtained from input data and containing color indications of variables in the data in a form better adapted for interpret... | 01/24/1978 |
| 4063216 | Displaying seismic sections in isometric view The present invention provides a new and improved method of displaying a plurality of seismic sections of geophysical data on two-dimensional surface in an isometric view, while the display so formed is a display of increased information content.... | 12/13/1977 |
| 4020447 | Method and apparatus for recording seismic signals A method and apparatus for marine seismic prospecting in which a long spacing linear array of seismic detectors is spaced from a seismic source and connected to a recording apparatus on a survey ship. A short spacing linear array of seismic detectors is a... | 04/26/1977 |
| 4017833 | Summer for group recorder Cableless seismic recorders employ a small, mobile amplifier-recorder in which preferentially the recorder tape contains in digital form both identification information (called header data) and the response of a plurality of seismometers (seismometer grou... | 04/12/1977 |
| 4006445 | Apparatus for and methods of seismic prospecting In seismic prospecting a local response is achieved by striking a hammer on the ground, and the recording apparatus is arranged to be triggered by the hammer to run from a short time before the impulse to a predetermined time after it. The impulse is reco... | 02/01/1977 |
| 4001768 | Data acquisition, transport and storage system This abstract describes a system for the field recording of seismic data in which a plurality of geophone outputs are connected to an array terminal. Each geophone is connected to a fixed gain differential amplifier. A shifting function is produced which ... | 01/04/1977 |
| 3987406 | Seismic group recorder control system In seismic group recording, each seismic trace is initially digitally recorded by a small, portable, magnetic recorder placed near the corresponding seismometer recorder group. A large number of such groups and corresponding recorders are placed over an a... | 10/19/1976 |
| 3975705 | Color display of geophysical and other data A new and improved color display of geophysical and other scientific and industrial or similar technological data readily and quickly obtained from input data and containing color indications of variables in the data in a form better adapted for interpret... | 08/17/1976 |
| 3961306 | Method of forming color graphic displays from input data A new and improved method of forming color graphic displays from input data is disclosed. In the displays so formed differing colors quantitatively identify and indicate differing values or ranges of values of the data. The input data are processed to det... | 06/01/1976 |
| 3952283 | Group recorder alarm This invention concerns a status alarm for a seismometer group recorder. In using group recorders, the automatic recording feature leaves the field personnel (the user) with minimum confidence that operations are satisfactory, in the absence of a status a... | 04/20/1976 |
| 3946356 | Synthetic display of seismic reflection strength A synthetic display is provided, in cross-sectional form, of the theoretical strength of seismic reflections. The theoretical strength is computed from calculated inverval-velocity values and known or estimated density values. By comparison of this synthe... | 03/23/1976 |
