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US3781785A Expired / Lapsed US ⏱️ 0.0 years remaining

Color sonagrams and methods for their production

Assignee: Marathon Oil Co
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Filing: 1970-01-26
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Granted: 1973-12-25
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Expires: 1990-01-26
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Abstract

Abstract Seismographic signals are separated by filters into their low-, medium-, and high-frequency component signals and the envelope of each is generated and displayed in a different color, e.g., red, green, and blue, respectively. The displays are superimposed, and combined with the seismic trace so as to show both frequency content and time varying amplitude simultaneously.

Inventors

  • 👤 A Balch

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-01 20:41
CPC Classifications
G; G01; G01D; G01D15/00; G01D15/14; G01V; G01V1/00; G01V1/24

Claims Analysis

Total Claims: 19
Claim 1
Independent Claim 170 words
In a process for the display of earth-controlled events, the improvement comprising in combination: a. creating a substantially continuous or discretely sampled electrical signal indicative of said events over an interval of time, b. parallel filtering said electrical signal through at least one filter to separate said signal into a plurality of filtered signals, each representing the component of said signal in a particular band of a continuously varying parameter, c. converting each of said filtered signals into a series of visible lines having excursions, the frequency of said excursions being proportional to the amplitude of said filtered demodulated signal, and representing the intensity of the signal in a particular band of said parameter, averaged over a small, moving time window, d. producing a differently colored replica of each of said set of visible line excursions, e. combining the color replicas corresponding to each signal of said plurality of filtered signals to form a single display indicative of the parameter component distribution of said signal indicative of said earth-controlled events.
Claim 2
Dependent Claim 170 words
In a process for the display of earth-controlled events, the improvement comprising in combination: a. creating a substantially continuous or discretely sampled electrical signal indicative of said events over an interval of time, b. parallel filtering said electrical signal through at least one filter to separate said signal into a plurality of filtered signals, each representing the component of said signal in a particular band of a continuously varying parameter, c. converting each of said filtered signals into a series of visible lines having excursions, the frequency of said excursions being proportional to the amplitude of said filtered demodulated signal, and representing the intensity of the signal in a particular band of said parameter, averaged over a small, moving time window, d. producing a differently colored replica of each of said set of visible line excursions, e. combining the color replicas corresponding to each signal of said plurality of filtered signals to form a single display indicative of the parameter component distribution of said signal indicative of said earth-controlled events.
Claim 3
Dependent Claim 180 words
In a process for the display of earth-controlled transient events, the improvement comprising in combination: a. creating a substantially continuous or discretely sampled electrical signal indicative of said events over an interval of time, b. parallel filtering said electrical signal through at least one filter to separate said signal into a plurality of filtered signals, each representing the component of said signal in a particular band of a continuously-varying parameter, c. demodulating each of said filtered signals to form a corresponding demodulated envelope signal, representing the intensity of the signal in a particular band of said parameter, averaged over a small, moving time window, d. producing a differently colored visible display of each of said demodulated envelope signals wherein the amount of color in a portion of said visible display is proportional to the amplitude of the corresponding portion of said demodulated signal, e. combining the colored displays corresponding to each of said filtered, demodulated envelope signals to form a single display indicative of the amplitude of each of said parameter components of said signal indicative of said earth-controlled event.
Claim 4
Dependent Claim 180 words
In a process for the display of earth-controlled transient events, the improvement comprising in combination: a. creating a substantially continuous or discretely sampled electrical signal indicative of said events over an interval of time, b. parallel filtering said electrical signal through at least one filter to separate said signal into a plurality of filtered signals, each representing the component of said signal in a particular band of a continuously-varying parameter, c. demodulating each of said filtered signals to form a corresponding demodulated envelope signal, representing the intensity of the signal in a particular band of said parameter, averaged over a small, moving time window, d. producing a differently colored visible display of each of said demodulated envelope signals wherein the amount of color in a portion of said visible display is proportional to the amplitude of the corresponding portion of said demodulated signal, e. combining the colored displays corresponding to each of said filtered, demodulated envelope signals to form a single display indicative of the amplitude of each of said parameter components of said signal indicative of said earth-controlled event.
Claim 5
Dependent Claim 52 words
A process according to claim 1 additionally comprising: f. producing a visible display representative of said electrical signal indicative of said events, g. combining said display representative of said electrical signal indicative of said events with said single display indicative of the time variation in amplitude of each of said parameter components.
Claim 6
Dependent Claim 51 words
A process according to claim 2 additionally comprising: h. producing a visible display representative of said electrical signal indicative of said events, i. combining said display representative of said electrical signal indicative of said events with said single display indicative of the time varying amplitude of each of said parameter components.
Claim 7
Dependent Claim 21 words
A process according to claim 3 additionally comprising: b''. demodulating each of said filtered signals to form a corresponding demodulated signal.
Claim 8
Dependent Claim 37 words
The process of claim 1 wherein each of said visible lines is displayed as a colored transparent line and wherein sAid single display is produced by superimposing two or more sets of colored line displays in registry.
Claim 9
Dependent Claim 41 words
The process of claim 2 wherein each of said visible lines is displayed as a colored transparent line and wherein said single display is produced by superimposing two or more sets of colored lines, i.e., individual colored line displays, in registry.
Claim 10
Dependent Claim 31 words
The process of claim 3 wherein each of said visible lines is displayed as a colored transparent line and wherein said single display is produced by aligning said colored transparent lines.
Claim 11
Dependent Claim 31 words
The process of claim 4 wherein each of said visible lines is displayed as a colored transparent line and wherein said single display is produced by aligning said colored transparent lines.
Claim 12
Dependent Claim 31 words
The process of claim 5 wherein each of said visible lines is displayed as a colored transparent line and wherein said single display is produced by aligning said colored transparent lines.
Claim 13
Dependent Claim 8 words
A colored display produced according to claim 1.
Claim 14
Dependent Claim 8 words
A colored display produced according to claim 2.
Claim 15
Dependent Claim 8 words
A colored display produced according to claim 10.
Claim 16
Dependent Claim 13 words
The process of claim 1 in which said continuously varying parameter is frequency.
Claim 17
Dependent Claim 13 words
The process of claim 2 in which said continuously varying parameter is frequency.
Claim 18
Dependent Claim 22 words
The process of claim 1 in which said continuously varying parameter is velocity through the earth or some mathematical function dependent thereon.
Claim 19
Dependent Claim 22 words
The process of claim 2 in which said continuously varying parameter is velocity through the earth or some mathematical function dependent thereon.

References Cited (Backward Citations)

US2901747A Cited
US2944620A Cited
US2991446A Cited
US3072907A Cited
US3209320A Cited
US3602879A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1976-12-24 1977-06-25 1977-12-25 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1980-12-24 1981-06-25 1981-12-25 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1984-12-24 1985-06-25 1985-12-25 $7700.00 Window Closed / Lapsed

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