Computer graphics processing and selective visual display system – Single display system having stacked superimposed display...
Reexamination Certificate
1998-12-03
2001-05-29
Hjerpe, Richard (Department: 2774)
Computer graphics processing and selective visual display system
Single display system having stacked superimposed display...
C345S007000, C345S008000, C345S009000, C345S087000, C345S905000, C359S630000
Reexamination Certificate
active
06239770
ABSTRACT:
BACKGROUND OF THE INVENTION
1. Technical Field of the Invention
The present invention relates to an instrument as disclosed in the introductory portion of the appended claims, especially to a diver's computer or the like, said instrument comprising a processor or the like microprocessor device, as well a displaying device for presenting at least the processor's control and/or output data to a user. The invention further relates to a method for reading an instrument like a diver's computer or the like, wherein a display at said instrument is located in a casing having two different directions for reading said display.
Prior Art
Computers intended to be used e.g. by divers are know, said computers having processors for recording and processing, during the operation or thereafter, different parameters related to diving or the like, as well as devices for presenting such data to a user. As an example of such devices an apparatus according to Finnish Patent No. 91686 can be mentioned. Said apparatus is intended to be fastened to the user's wrist, the strap of his diver's mask or the like, said apparatus comprising a visual display and, suitably, means arranged separately for relaying said information to the user also in other ways.
Especially for a diver it is important that at least the most important data displayed by the diver's computer or the like device, as well as other information related to the operation, can be observed, during the use of said device, as easily as possible, and preferably directly in front of the user, by only looking e.g. at a special portion of the diver's mask.
U.S. Pat. No. 5,258,785 discloses a diver's computer having a display arranged in such a manner that it can be observed from the inside of a pair of diver's glasses or the like. U.S. Pat. No. 4,796,987 discloses an ordinary watch arranged in a corresponding manner.
The drawback of the devices according to said U.S. Patents is, however, that the information expressed by said devices can be seen only from a close distance and only through a pair of diver's glasses or a diver's mask. A complete diver's computer, however, can be used in a much more versatile manner, i.e. the programming operation of the device usually takes place prior to the actual diving, and, correspondingly, the retrieval of certain information stored in the computer during the diving operation is performed after said operation. Quite often the programming or the retrieval can be performed by an assistant or a supervisor, the diver himself still carrying his equipment.
Object and Summary of the Invention
In order to solve said problems the device and method according to the present invention have been developed. Thus, the present inventive device is characterized in the display of a displaying device being adapted in a casing in such a manner that said display can be clearly read from two essentially different directions. Correspondingly, the present inventive method is characterized in that a first side of a structurally transparent display is read directly from above said display and an opposite side of said display is read essentially from the opposite side of the casing through a special optical arrangement so that a mirror image of the image read from behind said display will be seen. Especially favorably the display of said device is as such arranged to be readable from both sides, especially so that said display is arranged in such a manner that a first side of said display shows data as an image to be read as a true image, i.e. from the right side, the same data constituting, when they are observed from the opposite side of said display, a mirror image of the observed true image. Preferably said display is relatively thin and typically transparent, in which case the display segments as such can be seen from both directions.
REFERENCES:
patent: 5033818 (1991-07-01), Barr
patent: 5258785 (1993-11-01), Dawkins
patent: 5301668 (1994-04-01), Hales
patent: 5619373 (1997-04-01), Meyerhofer et al.
patent: 5856819 (1999-01-01), Vossler
patent: 95/28661 (1995-10-01), None
Benemec Oy
Browdy and Neimark
Hjerpe Richard
Lesperance Jean
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