Source: http://www.google.de/patents/US5001468
Timestamp: 2013-05-25 01:31:10
Document Index: 781066000

Matched Legal Cases: ['art.\n3', 'art 22', 'art 21', 'art 22', 'art 21', 'art 22', 'art 21']

Patent US5001468 - Flat panel display device with operator-controlled display - Google PatenteSuche Bilder Maps Play YouTube News Gmail Drive Mehr » Erweiterte Patentsuche | Webprotokoll | Anmelden Erweiterte Patentsuche PatenteThe flat panel display device is organized so as to have, on its front side, a part with dedicated liquid crystals used in back-up mode, a matrix display part with non-dedicated liquid crystals used in normal mode, and a keyboard where the meaning of its keys is displayed by the matrix. Furthermore,...http://www.google.de/patents/US5001468?utm_source=gb-gplus-sharePatent US5001468 - Flat panel display device with operator-controlled display Ver�ffentlichungsnummerUS5001468 APublikationstypErteilung Anmeldenummer07/239,425 Ver�ffentlichungsdatum19. M�rz 1991Eingetragen1. Sept. 1988 Priorit�tsdatum4. Sept. 1987Auch ver�ffentlicht unterCA1331230CEP0306403A1EP0306403B1 ErfinderMichel BriceJean-Michel BuissonJean-Marie SoubrierUrspr�nglich Bevollm�chtigterThomson-Csf US-Klassifikation345/50345/87345/904Internationale KlassifikationG09G3/36 UnternehmensklassifikationG09G3/36G09G2360/04 Europ�ische KlassifikationG09G3/36ReferenzenPatentzitate (11) Referenziert von (13)Externe LinksUSPTO USPTO-Zuordnung EspacenetFlat panel display device with operator-controlled displayUS 5001468 A Zusammenfassung The flat panel display device is organized so as to have, on its front side, a part with dedicated liquid crystals used in back-up mode, a matrix display part with non-dedicated liquid crystals used in normal mode, and a keyboard where the meaning of its keys is displayed by the matrix. Furthermore, the non-dedicated liquid crystal matrix is addressed so as to increase operational safety and displaying speed.
What is claimed is: 1. A flat panel display device with operatorcontrolled display of information, said device comprising: a flat screen of an illuminating device, a device for holding said flat screen, a keyboard placed adjacent to said flat screen, a frame covering the holding device and used for supporting the keyboard, means for supporting the flat screen, the holding device and the frame, electronic circuits for controlling the flat screen and the keyboard, said circuits placed proximate to said supporting means, said circuits allowing each key of the keyboard to have several meanings so as to select a defined display of information on the screen, and a housing into which the supporting means fit and which acts as a shield, said flat panel display device including two forms of display type crystals controlled by two distinct circuits of said electronic circuits, a first part of the display being made of nondedicated liquid crystals arranged in a dot matrix format with addressing by row and column of the matrix to form a display and a second part of the display being made of dedicated liquid crystals with segments arranged vertically and horizontally to form the display.
2. A display device according to claim 1 having two modes of operation, one mode called a "normal" mode in which the data is displayed only by said first part with non-dedicated liquid crystals, and the other mode, called a "back-up" mode, in which some of this information is displayed by said second part with dedicated liquid crystals in order to overcome a display failure in the first part.
3. A display device according to claim 1, wherein the control circuits of the liquid crystal matrix comprise: means for generating and recording at least two images in digital form of the image to be displayed, with each generated and recorded image corresponding to a certain intensity of each point of the matrix. means for rearranging data corresponding to the recorded images so that one of a left-hand half of an image, a right-hand half of the image, even-numbered points of the image and odd-numbered points of an image can be displayed on the liquid crystal matrix, and addressing means for selecting each point of the matrix and giving it intensity information derived from data from each generated and recorded image.
4. A display device according to claim 3, wherein the rearranging means comprises: two shift registers, two multiplexer circuits connected to the shift registers, each multiplexer circuit having four outputs; a memory comprising eight shift registers, each connected to a single output of one of the two multiplexer circuits, and a control logic circuit which passes control signals to the shift registers, the multiplexer circuits and the memory so as to shunt information contained in the shift registers to one of the registers of the memory depending on the rearranged data.
The threaded rods 17 are of a length sufficient to enable the threading of the following elements with a view to supporting them: an illuminating plate 2, joints 3 and 6, a collar 5 and a frame 7. The collar 5 clamps a flat panel 4 formed of liquid crystals and supports it. The frame 7, fitted with a glass plate (not shown) takes the six keys 9 of a keyboard 18, the support 8 of which consists of a printed circuit Bolts such as those marked 20 are screwed on to the threaded rods 17 so as to fix the elements 2 to 8 to the frame 1. After joining, the frame 1, containing the printed circuit boards 12 to 14 and supporting the elements 2 to 9, is inserted into a housing 10 which shields it. Thus, a relatively small-sized display device, for example, 188 mm with a depth of 230 mm, is obtained.
It will be noted that, in normal operation, only the part 22 shows indications while the upper part 21 is not used. In back-up mode, the lower part 22 displays no information while the upper part 21 gives indications presented solely with alphanumeric characters: these indications correspond to all or a part of the indications given in the lower part 22. Thus, in FIG. 2, the information displayed in the upper part 21 is information on the speed of the turbines (for example 34,000 and 34,100 rpm as pictured) and their temperature (640 640
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