Patent US6296665B1 successfully refreshed from Google Patents.
US3742289A
Expired / Lapsed
US
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Video display system creating both horizontal and vertical sync pulses from the disc time track
Assignee: Mobil Oil AS
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Filing: 1970-10-30
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Granted: 1973-06-26
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Expires: 1990-10-30
Abstract
Abstract The video display system described consists of a digital disc which can store at least three seismic cross sections and a high resolution TV monitor. The monitor can show a cross section of 480 traces with 500 five-bit samples per trace. The electronic parts of the system control the flow of data to and from a computer through an interface controller. A high-speed D/A converter changes the digital seismic data into an analog video signal, and an external core memory is used to ''''bridge'''' the various speeds with which data flow from one point to another in the system. A graphical input device can be used to draw zones on the displayed cross section. This system can be an integral part of a complete computer graphics system.
Inventors
- 👤 G Koeijmans
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 10:25
CPC Classifications
G; G09; G09G; G09G5/00; G09G5/36; G09G5/39; G01; G01V; G01V1/00; G01V1/28; G01V1/34; G06; G06F; G06F3/00; G06F3/14; G06F3/153
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
194 words
A video system for displaying recorded digital data comprising: a cathode ray tube display device including means for sweeping an electron beam in a raster scan, said display device having a horizontal sync circuit triggered externally and a vertical sync circuit triggered externally and separately from said horizontal sync circuit, a cyclical storage device for storing said digital data on a recording medium and for reproducing timing signals stored on said recording medium, a digital-to-analog converter, means synchronized with said timing signals for transferring said data from said cyclical storage device to said digital-toanalog converter to produce an analog video signal which is applied to intensity modulate the electron beam of said cathode ray tube device, means synchronized with said timing signals for generating a horizontal sync signal and a vertical sync signal, and means for applying said horizontal sync signal to said horizontal sync circuit and for applying said vertical syne signals to said vertical sync circuit for sweeping said electron beam in said cathode ray tube display device in horizontal sweeps synchronized with the transfer of data and in vertical sweeps synchronized with the transfer of data from said cyclical storage device.
Claim 2
Dependent Claim
194 words
A video system for displaying recorded digital data comprising: a cathode ray tube display device including means for sweeping an electron beam in a raster scan, said display device having a horizontal sync circuit triggered externally and a vertical sync circuit triggered externally and separately from said horizontal sync circuit, a cyclical storage device for storing said digital data on a recording medium and for reproducing timing signals stored on said recording medium, a digital-to-analog converter, means synchronized with said timing signals for transferring said data from said cyclical storage device to said digital-toanalog converter to produce an analog video signal which is applied to intensity modulate the electron beam of said cathode ray tube device, means synchronized with said timing signals for generating a horizontal sync signal and a vertical sync signal, and means for applying said horizontal sync signal to said horizontal sync circuit and for applying said vertical syne signals to said vertical sync circuit for sweeping said electron beam in said cathode ray tube display device in horizontal sweeps synchronized with the transfer of data and in vertical sweeps synchronized with the transfer of data from said cyclical storage device.
Claim 3
Dependent Claim
45 words
The system defined by claim 1 wherein the data to be displayed is multitrace seismic data representing a cross section of the earth, each trace of said seismic data being represented by one horizontal sweep of the raster scan of said cathode ray tube device.
Claim 4
Dependent Claim
15 words
The system defined by claim 1 wherein said cyclical storage device comprises a rotatable disc.
Claim 5
Dependent Claim
22 words
The system defined by claim 1 wherein said cathode ray tube display device comprises a television-type monitor with a 525-line raster scan.
Claim 6
Dependent Claim
53 words
The system recited in claim 1 wherein said means for transferring said data from said cyclical storage device to said digital-to-analog converter comprises a set of shift registers for transferring data to said digital-to-analog converter at a greater rate than that at which said data is being read from said cyclical storage device.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-06-25 | 1976-12-25 | 1977-06-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-06-25 | 1980-12-25 | 1981-06-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-06-25 | 1984-12-25 | 1985-06-26 | $7700.00 | Window Closed / Lapsed |