Communications: electrical – Land vehicle alarms or indicators – Internal alarm or indicator responsive to a condition of the...
Patent
1984-10-31
1988-12-13
Brigance, Gerald L.
Communications: electrical
Land vehicle alarms or indicators
Internal alarm or indicator responsive to a condition of the...
340765, 340793, 340805, G09G 336
Patent
active
047914173
DESCRIPTION:
BRIEF SUMMARY
This invention relates to a novel display device, namely to such a device which is run in a controlled-automatic mode in order to display different or changing images, e.g. portraits, objects, scenes, series of alphanumerical signs, etc., the display being of short or long duration. The display device is based upon visibilization of signs the principal of mosaic or dot matrix systems.
Primarily, this display device is a large scale advertising panel displaying dynamic information. However, it should also comprise panels capable of the transmission and supplying of any other information as it will be described later.
Device for the display and the visibilization of images and other information are already known. For example. U.S. Pat. No. 3,273,140 discloses a display panel having a large plurality of lamps being energized according to a program such that an image is formed by the combination of light and dark lamps. A similar device is disclosed in U.S. Pat. No. 2,239,522 wherein coloured lamps are used, and in U.S. Pat. No. 3,210,757.
Another kind of display scale is described in U.S. Pat. No. 3,270,447. According to that patent, the display panel is subdivided in a plurality of small cells each containing a reflector which can be positioned at different depths within its cell by electromagnetic means.
U.S. Pat. No. 3,486,258 discloses means for the displaying of animated images whereby display elements are displaced behind a screen. Furthermore, U.S. Pat. No. 3,482,344 describes a display panel wherein flat display means are pivotable by 180.degree.. When an image is to be formed or cancelled, the whole screen must be transported from one station to another where the display means are pivoted by fluid means.
All these known devices first suffer from the common severe drawback of high power. Furthermore, they are very expensive to. Display panels with electric lamps have the additional disadvantage that lamps must always be replaced since they have a limited lifetime, the replacement being logistically difficult. Further, illuminated areas never cover the entire surface area of the screen since the lamps have a circular section and the panel elements a square one, and the light density is furthermore not the same on the circular lamp section.
Other known display devices are too expensive in function or too complicated.
The display processes and devices of U.S. Pat. Nos. 4,186,394 and 4,328,492 (issued to the applicant) resolve a number of the cited problems and have substantial advantages but are still complex in construction.
The primary object of the invention is to provide a novel display panel which will be able to function in an automatic mode and capable of rendering visible different information such as images of persons, scenes, signs, advertisements and so on.
A further object of this invention is to provide a display system being well visible in daylight as well as in artificially illuminated areas like halls, airport lounges etc., capable of displaying information, e.g. on sport fields, without difficulties. The display panel should furthermore offer the possibility of reproducing the displayed images with half-tones.
Still a further object of this invention is to render visible the display in the form of a mosaic or a dot matrix pattern by the device to be developed whereby, however, the different points or dots must not be distiguishable by the naked eye but the image should give the impression of being continuous with half-tones.
The device should be arranged, according to another object of this invention, in such a way that it works in a reliable and simple manner and is of uncomplex construction, and that it renders possible a rapid change of the displayed image. Furthermore, the device should be capable of being constructed in a most economic and automatic way.
These objects of the invention are fulfilled by a display device, one embodiment of which may include a large area display panel, for controlled auotmatic display of optical information in a dot matrix, comprising a two-dimensional
REFERENCES:
patent: 3603984 (1971-09-01), Heilmeier
patent: 3614509 (1971-10-01), Willson
patent: 3886403 (1975-05-01), Owaki et al.
patent: 4006476 (1977-02-01), Romney
patent: 4028692 (1977-06-01), Ngo
patent: 4330813 (1982-05-01), Deutsch
patent: 4365869 (1982-12-01), Hareng et al.
patent: 4367464 (1983-01-01), Kurahashi et al.
patent: 4368485 (1983-01-01), Midland
patent: 4399434 (1983-08-01), Bielaa
patent: 4427979 (1984-01-01), Clerc et al.
patent: 4495492 (1985-01-01), Anderson et al.
patent: 4531121 (1985-07-01), Brown
patent: 4560982 (1985-12-01), Sonehara et al.
patent: 4617563 (1986-10-01), Fujiwara et al.
Brier Jeffery A.
Brigance Gerald L.
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