US4701799A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Image display panel drive
Assignee: Sharp Corp
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Filing: 1985-03-12
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Granted: 1987-10-20
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Expires: 2005-03-12
Abstract
Abstract A selection circuit is connected between a display composed of unit picture elements arranged in a dot matrix and a vertical scanning circuit, the selection circuit effects the selection of odd or even lines in the display. The advantages offered by such an arrangement are elimination of the necessity of interlaced scanning in the scanning circuit itself, cutting the number of steps in half in the scanning circuit during interlaced scanning, increase in the margin in operating speed and elimination of limitations on circuit configuration, device construction and materials used.
Inventors
- 👤 Masahiro Yoshimura
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 21:11
CPC Classifications
H; H04; H04N; H04N3/00; H04N3/10; H04N3/12
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
76 words
An image panel display drive system, comprising: a display; horizontal driving means for scanning a plurality of horizontal fields of said display; vertical driving means for scanning a plurality of vertical fields of said display; differentiation means for producing a field selection signal; and selection means, connected to said vertical driving means for permitting said vertical driving means to selectively scan said display in an interlace or non-interlace mode in accordance with said field selection signal.
Claim 2
Dependent Claim
76 words
An image panel display drive system, comprising: a display; horizontal driving means for scanning a plurality of horizontal fields of said display; vertical driving means for scanning a plurality of vertical fields of said display; differentiation means for producing a field selection signal; and selection means, connected to said vertical driving means for permitting said vertical driving means to selectively scan said display in an interlace or non-interlace mode in accordance with said field selection signal.
Claim 3
Dependent Claim
25 words
The drive system of claim 1, wherein said selection means is connected to said vertical driving means and to vertical input lines of said display.
Claim 4
Dependent Claim
69 words
The drive system of claim 1 wherein said selection means includes a plurality of selection output lines and said display has a plurality of vertical input lines wherein the number of said selection output lines equals the number of vertical input lines, and wherein said vertical driving means has a plurality of drive output lines, wherein a number of said drive output lines are connected to said selection means.
Claim 5
Dependent Claim
24 words
The drive system of claim 3 wherein each of said number of said drive output lines corresponds to two of said selection output lines.
Claim 6
Dependent Claim
14 words
The drive system of claim 1 wherein said display includes a dot matrix display.
Claim 7
Dependent Claim
24 words
The drive system of claim 1 wherein said plurality of vertical fields includes a plurality of odd fields and a plurality of even fields.
Claim 8
Dependent Claim
44 words
The drive system of claim 6 wherein said vertical driving means selectively alternately scans all of said odd fields and all of said even fields in said interlace mode and wherein said vertical driving means scans odd and even fields in said non-interlace mode.
Claim 9
Dependent Claim
116 words
An image panel display drive system, comprising: a dot matrix display having a plurality of vertical input lines and a plurality of horizontal input lines; horizontal driving means for scanning said plurality of horizontal input lines; vertical driving means having a plurality of vertical drive lines for scanning a plurality of vertical fields, each of said vertical fields associated with one of said plurality of vertical input lines; differentiation means for producing a field selected signal; and selection means connected to said vertical driving means at said plurality of vertical drive lines for permitting said vertical driving means to selectively scan said display in an interlace or non-interlace mode in accordance with said field selection signal.
Claim 10
Dependent Claim
116 words
An image panel display drive system, comprising: a dot matrix display having a plurality of vertical input lines and a plurality of horizontal input lines; horizontal driving means for scanning said plurality of horizontal input lines; vertical driving means having a plurality of vertical drive lines for scanning a plurality of vertical fields, each of said vertical fields associated with one of said plurality of vertical input lines; differentiation means for producing a field selected signal; and selection means connected to said vertical driving means at said plurality of vertical drive lines for permitting said vertical driving means to selectively scan said display in an interlace or non-interlace mode in accordance with said field selection signal.
Claim 11
Dependent Claim
39 words
The drive system of claim 8 wherein said selection means includes a plurality of selection output lines equal in number to said plurality of vertical input lines that connect said selection to said display at said vertical input lines.
Claim 12
Dependent Claim
23 words
The drive system of claim 9 wherein each of said plurality of vertical drive lines corresponds to two of said selection output lines.
Claim 13
Dependent Claim
24 words
The drive system of claim 8 wherein said plurality of vertical fields includes a plurality of odd fields and a plurality of even fields.
Claim 14
Dependent Claim
44 words
The drive system of claim 11 wherein said vertical driving means selectively alternately scans all of said odd fields and all of said even fields in said interlace mode and wherein said vertical driving means scans odd and even fields in said non-interlace mode.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1990-10-19 | 1991-04-20 | 1991-10-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-10-19 | 1995-04-20 | 1995-10-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-10-19 | 1999-04-20 | 1999-10-20 | $7700.00 | Window Closed / Lapsed |