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Automatically relegendable keyboard
| Details |
Inventors: Robertsen, Anthony L.; McInnis, Andrew M.;
Assignee: Sheldon Industries Inc. (Monrovia, CA)
Primary Examiner: Brigance; Gerald L.
Assistant Examiner:
Attorney, Agent or Firm: Haefliger; William W.
An automatically relegendable keyboard apparatus includes: (a) an endwise elongated belt having keyboard legends thereon, (b) a driver engaging the belt to drive the belt endwise and present a selected portion of the keyboard belt in a planar viewing zone, and (c) a transparent key panel at the front side of said belt portion presented at said viewing zone, with associated means to provide an electrical output corresponding to the location of a selected area of the panel to which the user's finger is applied, there being multiple of said selected areas of the key panel corresponding to legends on said selected portion of the belt which are viewable through the transparent key panel. |
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DETAILED DESCRIPTION Referring first to FIG.
1, apparatus 10 embodying the invention may include a front panel 11 viewed by the user.
A transparent key panel 12 is seen through an opening 13 in the front panel 11.
Located behind the latter and attached thereto is a body or frame 14, which includes end members 15 and side members 16, as seen in FIGS.
2 and 3.
An endwise elongated belt 17 is provided to have keyboard legends thereon, as represented by the square or rectangular areas 18 seen in FIG.
7.
These areas are typically formed in rows and columns to define multiple "pages", as for example the 1-20 pages seen in FIG.
7.
Each page as shown includes eight columns and five rows of legend areas 18, these being illustrative only (i.
e.
other numbers of rows and columns may be employed).
The belt is typically transparent (except for the legend squares and legends thereon--see the "meat" and "fish" legends on two squares, for example), and may for example consist of MYLAR film, a few thousandths inch in thickness.
Drive means is provided to engage the belt and drive it endwise, i.
e.
in the direction of arrows 14 in FIG.
7, so as to present a selected portion of the belt in a planar viewing zone at the rear side of the key panel.
Such a viewing zone may be that as depicted at 20 in FIG.
4.
In this regard, it will be seen from FIGS.
1 and 5 that the key panel or "keyboard" 12 has a number of square "keys" 18' arranged in rows and columns corresponding to legend squares 18 of one "page" on the belt.
Therefore, when the belt has been advanced endwise to position a selected "page" in zone 20 in proper registration with the "keys" 18', the user may view the legends on squares 18 through the transparent "keys" 18', which register with squares 18.
The key panel 12 has associated therewith means to provide an electrical output corresponding to the location of a selected area or square 18' of that panel, whereby when a user applies his finger to that square, a unique signal will be produced.
As an example of this, FIG
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