US3889244A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Graphic data display system with multiple display inhibit delay times
Assignee: Alcatel CIT SA
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Filing: 1973-09-21
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Granted: 1975-06-10
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Expires: 1993-09-21
Abstract
Abstract A graphic data display system for effecting controlled traces on the screen of a cathode ray tube in which data display is inhibited for various delay times in response to detection of changes in selected portions of the binary data signals indicating a change in the required trace including a memory for storing the binary signals and comparators for comparing the corresponding inputs and outputs of greatest weight of said memory to detect said changes.
Inventors
- 👤 Dusan Sinobad
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 00:58
CPC Classifications
G; G01; G01R; G01R13/00; G01R13/20; G01R13/22; G01R13/34; G01R13/345; G09; G09G; G09G1/00
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
153 words
A graphic data display system for effecting controlled traces on the screen of a cathode ray tube, comprising a memory capable of storing a sequence of data signals in binary form representing at least one data item relating to a portion of a tracing to be effected, control means connected to said memory for controlling the electron beam of the cathode ray tube on the basis of said data signals in binary form received from said memory and capable of affecting the beam for the displaying of the corresponding trace, detection means connected to the input and the output of said memory means for detecting the extent of changes in said data signals, and inhibiting means connected to said memory for inhibiting the application of data signals to said control means for selected delay periods in response to the output of said detection means representing different ranges of change in said data signals.
Claim 2
Dependent Claim
153 words
A graphic data display system for effecting controlled traces on the screen of a cathode ray tube, comprising a memory capable of storing a sequence of data signals in binary form representing at least one data item relating to a portion of a tracing to be effected, control means connected to said memory for controlling the electron beam of the cathode ray tube on the basis of said data signals in binary form received from said memory and capable of affecting the beam for the displaying of the corresponding trace, detection means connected to the input and the output of said memory means for detecting the extent of changes in said data signals, and inhibiting means connected to said memory for inhibiting the application of data signals to said control means for selected delay periods in response to the output of said detection means representing different ranges of change in said data signals.
Claim 3
Dependent Claim
68 words
A graphic data display system as defined in claim 1, wherein said detection means includes at least one comparator having a pair of inputs connected to the corresponding input and output of highest weight of said memory and said inhibiting means includes a delay circuit connected to the output of said comparator, the output of said delay circuit being connected in control of the operation of said memory.
Claim 4
Dependent Claim
56 words
A graphic display system as defined in claim 2, wherein said detection means includes a second comparator having a pair of inputs connected to the corresponding input and output of second highest weight of said memory and said inhibiting means includes a second delay circuit connected between said second comparator and said memory in control thereof.
Claim 5
Dependent Claim
43 words
A graphic display system as defined in claim 3, wherein the two delay circuits provide different delays and form between them a geometrical progression having a ratio of 1:2, the greatest delay being provided by the delay circuit connected to said one comparator.
Claim 6
Dependent Claim
46 words
A graphic display system as defined in claim 4, wherein said memory includes a read-out control and said inhibiting means further includes a logic OR circuit receiving the outputs of said delay circuits and having its output connected to control the read-out control of said memory.
Claim 7
Dependent Claim
37 words
A graphic display system as defined in claim 5, wherein said inhibiting means further includes first and second gating means responsive to a position signal for connecting the respective outputs of said comparators to said delay circuits.
Claim 8
Dependent Claim
24 words
A graphic display system as defined in claim 6, wherein said control means is connected to the deflection system of said cathode ray tube.
References Cited (Backward Citations)
US3588584A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-06-09 | 1978-12-09 | 1979-06-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-06-09 | 1982-12-09 | 1983-06-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-06-09 | 1986-12-09 | 1987-06-10 | $7700.00 | Window Closed / Lapsed |