Patent EP0156544A2 successfully refreshed from Google Patents.
EP0156544A2
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Visual display apparatus
Assignee: ASHKALE Ltd
•
Filing: 1985-03-04
•
Granted: —
•
Expires: 2005-03-04
Abstract
Abstract Visual display apparatus comprises one or more rows of light emitting sources (5) arranged to move cyclically through a display zone. The illumination of the light sources is controlled so that, to an observer, an image appears to be formed in the zone. The apparatus also includes a programming device which encodes artwork or the like in a form suitable for use by the visual display apparatus.
Inventors
- 👤 Trevor John Lock
- 👤 John Edward Scott-Hubbard
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-27 11:53
CPC Classifications
G; G09; G09G; G09G3/00; G09G3/005
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
78 words
Visual display apparatus comprising means for forming an array of light emitting sources, means for causing said array to move cyclically so that said sources perform a repetitive scanning of a display zone, and control means for- controlling the state of illumination of said light sources during said cyclic movement so as to cause said light sources to create in said display zone the appearance of an image which extends in the direction of movement of the array.
Claim 2
Dependent Claim
78 words
Visual display apparatus comprising means for forming an array of light emitting sources, means for causing said array to move cyclically so that said sources perform a repetitive scanning of a display zone, and control means for- controlling the state of illumination of said light sources during said cyclic movement so as to cause said light sources to create in said display zone the appearance of an image which extends in the direction of movement of the array.
Claim 3
Dependent Claim
34 words
Visual display apparatus according to Claim 1, wherein said array forming means is arranged to form a plurality of said arrays of light emitting sources arranged to scan said display zone in repeating succession.
Claim 4
Dependent Claim
24 words
Visual display apparatus according to Claim 1 or Claim 2, wherein the or each said array of sources is carried on a rotatable support.
Claim 5
Dependent Claim
45 words
Visual display apparatus according to Claim 3, wherein means are included for providing an indication of the rotational position of the said array or arrays to permit synchronisation of the state of illumination of said light sources in accordance with the rotation of said arrays.
Claim 6
Dependent Claim
47 words
Visual display apparatus according to any one of the preceding Claims, wherein said control means includes data memory means for storing data determining for each increment of movement of the or each said array, the state of illumination of each said light emitting source in said arrays.
Claim 7
Dependent Claim
22 words
Visual display apparatus according to Claim 5, wherein said data memory means is in the form of a detachable memory storage device.
Claim 8
Dependent Claim
34 words
Visual display apparatus according to Claim 5 or Claim 6, wherein means are included for programming said data memory means with data representative of artwork to be displayed as an image by the apparatus.
Claim 9
Dependent Claim
72 words
Visual display apparatus according to Claim 7, wherein said means for programming said data memory means comprises a rotatable drum for attachment of artwork, a light source for projecting light towards a segment of said artwork on said drum, sensor means for detecting light reflected from said segment of said artwork and memory means entering data representative of the light reflected from said segment of said artwork into said data storage means.
Claim 10
Dependent Claim
25 words
Visual display apparatus according to Claim 8, wherein said means for programming said data storage means includes means for detecting different colours on said artwork.
Claim 11
Dependent Claim
39 words
Visual display apparatus according to Claim 9, wherein said means for detecting different colours on said artwork comprises means for projecting different coloured light sources towards said artwork and means for detecting corresponding coloured light reflected from said artwork.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
Maintenance schedule is calculated for granted US utility patents.