US4458989A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electro-optic addressing apparatus and novel modulator configurations for use therein
Assignee: Eastman Kodak Co
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Filing: 1982-06-16
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Granted: 1984-07-10
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Expires: 2002-06-16
Abstract
Abstract Electro-optic addressing using an electro-optic modulator with improved electrode configuration and improved address control. During a first address stage activating and inactivating reference potentials are applied respectively to first and second of adjacent pixel portions of the modulator while an addressing signal potential (e.g. in accord with image data) is applied to both pixel portions. During a second address stage activating and inactivating reference potentials are applied respectively to the second and first pixel portions while signal potential is applied to both pixel portions.
Inventors
- 👤 Pin-Seng Tschang
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 04:06
CPC Classifications
G; G06; G06K; G06K15/00; G06K15/02; G06K15/12; G06K15/1238; G06K15/1242; G06K15/1252; G02; G02F; G02F1/00; G02F1/01; G02F1/03; G02F1/0305; G02F1/0316; G02F1/0327
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
241 words
An electro-optical address device comprising: (a) a panel of electro-optic material, including a linear array of high resolution pixel portions, each transformable to an active condition by an activating electrical field; (b) first electrode means comprising a plurality of electrically coupled first reference electrodes formed on said panel in spaced relation; (c) second electrode means comprising a plurality of electrically coupled second reference electrodes formed on said panel in spaced relation an interleaved with said first electrodes so that adjacent sequential-address pairs of pixel portions are located between respective first and second reference electrode pairs; (d) a plurality of signal electrodes, each adapted for independent address with a signal potential, and formed on said panel in a spaced relation, respectively between the pixel portions of said sequential-address pairs; (e) address means for applying signal potential to predeterminedly address said signal electrodes during each of sequential first and second modulator address stages; (f) means for applying an activating reference potential substantially different than said signal potential to said first reference electrodes during said first address stage and for applying an inactivating reference potential, intermediate in magnitude with respect to said signal potential and said activating potential, to said first reference electrodes during said second address stage; and (g) means for applying said inactivating reference potential to said second reference electrodes during said first address stage and for applying said activating reference potential to said second reference electrodes during said second address stage.
Claim 2
Dependent Claim
241 words
An electro-optical address device comprising: (a) a panel of electro-optic material, including a linear array of high resolution pixel portions, each transformable to an active condition by an activating electrical field; (b) first electrode means comprising a plurality of electrically coupled first reference electrodes formed on said panel in spaced relation; (c) second electrode means comprising a plurality of electrically coupled second reference electrodes formed on said panel in spaced relation an interleaved with said first electrodes so that adjacent sequential-address pairs of pixel portions are located between respective first and second reference electrode pairs; (d) a plurality of signal electrodes, each adapted for independent address with a signal potential, and formed on said panel in a spaced relation, respectively between the pixel portions of said sequential-address pairs; (e) address means for applying signal potential to predeterminedly address said signal electrodes during each of sequential first and second modulator address stages; (f) means for applying an activating reference potential substantially different than said signal potential to said first reference electrodes during said first address stage and for applying an inactivating reference potential, intermediate in magnitude with respect to said signal potential and said activating potential, to said first reference electrodes during said second address stage; and (g) means for applying said inactivating reference potential to said second reference electrodes during said first address stage and for applying said activating reference potential to said second reference electrodes during said second address stage.
Claim 3
Dependent Claim
289 words
A light valve electronic imaging apparatus comprising: (a) a panel of electro-optic material, including a linear array of high resolution pixel portions, each transformable to an active condition by an activating electrical field; (b) first electrode means comprising a plurality of electrically coupled first reference electrodes formed on said panel in spaced relation; (c) second electrode means comprising a plurality of electrically coupled second reference electrodes formed on said panel in spaced relation and interleaved with said first electrodes so that adjacent sequential-address pairs of pixel portions are located between respective first and second reference electrode pairs; (d) a plurality of signal electrodes, each adapted for independent address with a signal potential, and formed on said panel in a spaced relation, respectively between the pixel portions of said sequential-address pairs; (e) image address means for applying to said signal electrodes, during a first address stage, signal potential in accord with a portion of an image line to be reproduced by a first set of said pixel portions and for applying to said signal electrodes, during a second address stage, signal potential in accord with a a portion of an image line to be reproduced by a second set of said pixel portions; (f) means for applying an activating reference potential substantially different than said signal potential to said first reference electrodes during said first address stage and for applying an inactivating reference potential intermediate in magnitude with respect to said signal and activating potentials to said first reference electrodes during said second address stage; and (g) means for applying said inactivating reference potential to said second reference electrodes during said first address stage and for applying said activating reference potential said second reference electrodes during said second address stage.
Claim 4
Dependent Claim
289 words
A light valve electronic imaging apparatus comprising: (a) a panel of electro-optic material, including a linear array of high resolution pixel portions, each transformable to an active condition by an activating electrical field; (b) first electrode means comprising a plurality of electrically coupled first reference electrodes formed on said panel in spaced relation; (c) second electrode means comprising a plurality of electrically coupled second reference electrodes formed on said panel in spaced relation and interleaved with said first electrodes so that adjacent sequential-address pairs of pixel portions are located between respective first and second reference electrode pairs; (d) a plurality of signal electrodes, each adapted for independent address with a signal potential, and formed on said panel in a spaced relation, respectively between the pixel portions of said sequential-address pairs; (e) image address means for applying to said signal electrodes, during a first address stage, signal potential in accord with a portion of an image line to be reproduced by a first set of said pixel portions and for applying to said signal electrodes, during a second address stage, signal potential in accord with a a portion of an image line to be reproduced by a second set of said pixel portions; (f) means for applying an activating reference potential substantially different than said signal potential to said first reference electrodes during said first address stage and for applying an inactivating reference potential intermediate in magnitude with respect to said signal and activating potentials to said first reference electrodes during said second address stage; and (g) means for applying said inactivating reference potential to said second reference electrodes during said first address stage and for applying said activating reference potential said second reference electrodes during said second address stage.
Claim 5
Dependent Claim
21 words
The invention defined in claims 1 or 2 wherein said signal potential is approximately the half-wave voltage for said pixel portions.
Claim 6
Dependent Claim
24 words
The invention defined in claim 3 wherein said inactivating potential is substantially one-half of said half-wave voltage and said activating potential is substantially zero.
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) | 1987-07-10 | 1988-01-09 | 1988-07-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-07-10 | 1992-01-09 | 1992-07-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-07-10 | 1996-01-09 | 1996-07-10 | $7700.00 | Window Closed / Lapsed |