US5598223A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for transforming a video image into an image suitable for a display matrix
Assignee: EssilorLuxottica SA
•
Filing: 1995-05-04
•
Granted: 1997-01-28
•
Expires: 2015-05-04
Abstract
Abstract A method and device for transforming a video signal representing a video image into a signal representing an image for a display matrix useful in equipment for centering spectacle lenses are disclosed, the device comprising a unit supplying a video image of the lenses, a unit furnishing data for a spectacle frame, a microprocessor which generates an image of said frame and an alignment pattern for superimposition in the image of said lenses, and a flat panel display device.
Inventors
- 👤 Thierry Leroux
- 👤 Christian Massart
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 01:38
CPC Classifications
G; G09; G09G; G09G5/00; G09G5/36; G09G5/39; G09G3/00; G09G3/20; G09G3/34; G09G3/36; G09G3/3611; G09G2310/00; G09G2310/02; G09G2310/0202; G09G2310/0221; G09G2340/00; G09G2340/10; G09G2360/00; G09G2360/12; G09G2360/126
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
186 words
A lens centering apparatus comprising: a unit supplying a video image of a lens to be centered; a spectacle frame reading unit comprising a microprocessor generating an image of a spectacle frame and of an alignment pattern to be inset into said video image of the lens; a display device which includes a display matrix; a video analog-digital convertor designed to receive the video image of the lens and to supply digital signals at its output corresponding to even-numbered and odd-numbered fields and composite field and line synchronization signals; an image storage memory having at least an even-numbered portion and at least an odd-numbered portion, accessible for asynchronous read and write operations; a graphics controller managing writing of the digital signals supplied by said convertor into said image storage memory, and reading of said image storage memory, and supplying at its output a signal for said display matrix; and an inset memory designed to receive said image to be inset, and said graphics controller further managing reading of said image inset memory and incorporating into said signal for said display matrix said image to be inset.
Claim 2
Dependent Claim
186 words
A lens centering apparatus comprising: a unit supplying a video image of a lens to be centered; a spectacle frame reading unit comprising a microprocessor generating an image of a spectacle frame and of an alignment pattern to be inset into said video image of the lens; a display device which includes a display matrix; a video analog-digital convertor designed to receive the video image of the lens and to supply digital signals at its output corresponding to even-numbered and odd-numbered fields and composite field and line synchronization signals; an image storage memory having at least an even-numbered portion and at least an odd-numbered portion, accessible for asynchronous read and write operations; a graphics controller managing writing of the digital signals supplied by said convertor into said image storage memory, and reading of said image storage memory, and supplying at its output a signal for said display matrix; and an inset memory designed to receive said image to be inset, and said graphics controller further managing reading of said image inset memory and incorporating into said signal for said display matrix said image to be inset.
Claim 3
Dependent Claim
72 words
The lens centering apparatus of claim 1, wherein said image storage memory comprises four portions corresponding respectively to an upper portion of even-numbered fields of said video image of the lens, an upper portion of odd-numbered fields of said video image of the lens, a lower portion of even-numbered fields of said video image of the lens and a lower portion of said odd-numbered field of said video image of the lens.
Claim 4
Dependent Claim
89 words
The lens centering apparatus of claim 2, wherein said graphics controller comprises: a video synchronization module for detecting a useful window of said video image of the lens a write module providing write synchronization in the portions of said image storage memory for digital signals supplied by said analog-digital convertor; a read module providing read synchronization in said image storage memory for supplying said signal for said display matrix; and a processing module for transforming signals read in said image storage memory into a signal for said display matrix.
Claim 5
Dependent Claim
60 words
The lens centering apparatus of claim 3, wherein said processing module comprises a gray scale palette module for transforming the values of said signals read in said image storage memory into gray scale levels, and an interface module for putting transformed signals received from said gray scale palette module into serial form for constituting said signal for said display matrix.
Claim 6
Dependent Claim
122 words
The lens centering apparatus of claim 1, wherein said graphics controller comprises: a video synchronization module for detecting a useful window of said video signal; a write module providing write synchronization in the portions of said image storage memory for digital signals supplied by said analog-digital convertor; a read module providing read synchronization in said image storage memory for supplying said signal for said display matrix; an inset memory management module and an address generation module allowing reading or writing in said image inset memory; a module for summing the signals read in said image storage memory and in said image inset memory; and a processing module for transforming signals originating from said summing module into a signal for said display matrix.
Claim 7
Dependent Claim
61 words
The lens centering apparatus device of claim 5, wherein said processing module comprises a gray scale palette module for transforming the values of said signals read in said image storage memory into gray scale levels, and an interface module for putting transformed signals received from said gray scale palette module into serial form for constituting said signal for said display matrix.
References Cited (Backward Citations)
US4730260A
Cited
US4656590A
Cited
US4680632A
Cited
US4885787A
Cited
US4908710A
Cited
US4994912A
Cited
US5218274A
Cited
FR2660471A1
Cited
US5168270A
Cited
US5227882A
Cited
US5293540A
Cited
EP0539033A1
Cited
US5283980A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2000-01-28 | 2000-07-29 | 2001-01-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2004-01-28 | 2004-07-29 | 2005-01-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2008-01-28 | 2008-07-29 | 2009-01-28 | $7700.00 | Window Closed / Lapsed |