US3753038A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for operating row-column matrix panels and devices
Assignee: OI Glass Inc
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Filing: 1970-12-11
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Granted: 1973-08-14
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Expires: 1990-12-11
Abstract
Abstract There is disclosed a method and apparatus for reducing or eliminating differential line aging on gaseous discharge display/memory panels. For a given size N X M grid or point pattern the use or incidence rate of each point is determined by applying normal patterns of characters thereto. The row-column conductor arrays forming matrix cross-points locating a discrete discharge site are shifted so as to assure that the positions in the dot matrix are more evenly utilized.
Inventors
- 👤 D Liddle
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 23:49
CPC Classifications
G; G09; G09G; G09G3/00; G09G3/20; G09G3/22; G09G3/28; G09G3/288; G09G3/296; G09G3/297; G09G5/00; G09G5/22; G09G5/32
Claims Analysis
Total Claims: 19
Claim 1
Independent Claim
76 words
A method of preventing differential line aging in a matrix type display panel comprised of a linear column conductor array and a linear row conductor array and on which panel alphanumeric characters are entered by potentials selectively applied to selected row-column conductors respectively defining character blocks which comprises the step of: simultaneously causing a shifting movement of the display positions all character blocks as a unit at least one conductor position in one of said arrays.
Claim 2
Independent Claim
76 words
A method of preventing differential line aging in a matrix type display panel comprised of a linear column conductor array and a linear row conductor array and on which panel alphanumeric characters are entered by potentials selectively applied to selected row-column conductors respectively defining character blocks which comprises the step of: simultaneously causing a shifting movement of the display positions all character blocks as a unit at least one conductor position in one of said arrays.
Claim 3
Dependent Claim
55 words
The invention defined in claim 1 wherein said step of causing a shifting movement of display positions of character blocks is in the direction of and along said column conductor, and further including simultaneous shifting movement of said display positions as a unit one conductor position in the direction of and along said row conductors.
Claim 4
Dependent Claim
43 words
The invention defined in claim 1 including repeating said step of causing a shifting movement of character block positions at least one further time in the same direction and then returning said character writing to the initial position thereof and repeating the process.
Claim 5
Independent Claim
142 words
A method of improving the average performance characteristics of a display matrix composed of transversely oriented row and column conductor arrays, wherein alphanumeric characters are written in a plurality of N X M cross poinT positions where N equals the number of row conductors assigned per character position and M equals the number of column conductors assigned per said character positions, comprising the steps of, determining the incidence rate of energized cross points written in said N X M cross points for a normal sequence of alphanumeric character to be displayed within said N X M cross points, and shifting said N X M cross points to at least one set of adjacent cross points along a conductor in said matrix and in a direction so as to establish a more uniform average use rate for all points in said display matrix.
Claim 6
Independent Claim
142 words
A method of improving the average performance characteristics of a display matrix composed of transversely oriented row and column conductor arrays, wherein alphanumeric characters are written in a plurality of N X M cross poinT positions where N equals the number of row conductors assigned per character position and M equals the number of column conductors assigned per said character positions, comprising the steps of, determining the incidence rate of energized cross points written in said N X M cross points for a normal sequence of alphanumeric character to be displayed within said N X M cross points, and shifting said N X M cross points to at least one set of adjacent cross points along a conductor in said matrix and in a direction so as to establish a more uniform average use rate for all points in said display matrix.
Claim 7
Independent Claim
73 words
A method of minimizing changes in the average performance characteristics of discrete discharge sites in a crossed row-column conductor gaseous discharge panel wherein the conductors are dielectrically isolated from the gas and wherein alphanumeric textual material is written on the panel a page at a time, which comprises the step of introducing a discrete shifting motion of at least one conductor position to each successive page of textual material written on said panel.
Claim 8
Independent Claim
73 words
A method of minimizing changes in the average performance characteristics of discrete discharge sites in a crossed row-column conductor gaseous discharge panel wherein the conductors are dielectrically isolated from the gas and wherein alphanumeric textual material is written on the panel a page at a time, which comprises the step of introducing a discrete shifting motion of at least one conductor position to each successive page of textual material written on said panel.
Claim 9
Dependent Claim
16 words
The invention defined in claim 6 wherein said discrete shifting motion is in a vertical direction.
Claim 10
Dependent Claim
16 words
The invention defined in claim 5 wherein said discrete shifting motion is in a horizontal direction.
Claim 11
Dependent Claim
16 words
The invention defined in claim 5 wherein said discrete shifting motion has horizontal and vertical components.
Claim 12
Dependent Claim
21 words
The invention defined in claim 8 wherein over a series of pages of textual material said discrete shifting motion is zig-zag.
Claim 13
Dependent Claim
71 words
In a gas discharge display panel having a row-column conductor cross point matrix for exciting a thin gaseous medium and wherein pages of textual material constituted by alphanumeric characters are entered as successive lines of text material with spacing at least between successive lines of said text material, the improvement comprising means for introducing a discrete displacement of at least one conductor position to each successive page of alphanumeric textual material.
Claim 14
Dependent Claim
71 words
In a gas discharge display panel having a row-column conductor cross point matrix for exciting a thin gaseous medium and wherein pages of textual material constituted by alphanumeric characters are entered as successive lines of text material with spacing at least between successive lines of said text material, the improvement comprising means for introducing a discrete displacement of at least one conductor position to each successive page of alphanumeric textual material.
Claim 15
Dependent Claim
18 words
The invention defined in claim 10 wherein said discrete displacement is caused to be in a vertical direction.
Claim 16
Dependent Claim
15 words
The invention defined in claim 10 wherein said discrete displacement is in a horizontal direction.
Claim 17
Dependent Claim
16 words
The invention defined in claim 10 wherein said discrete displacement has both vertical and horizontal components.
Claim 18
Dependent Claim
22 words
The invention defined in claim 13 wherein the direction of said horizontal component is reversed for each successive page of textual material.
Claim 19
Dependent Claim
35 words
The invention defined in claim 10 wherein said means for introducing a discrete displacement includes a counter means for counting such successive page of textual material by way of counting each full page erase signal.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-08-13 | 1977-02-12 | 1977-08-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-08-13 | 1981-02-12 | 1981-08-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-08-13 | 1985-02-12 | 1985-08-14 | $7700.00 | Window Closed / Lapsed |