Calculator apparatus with electronically alterable key symbols
First Claim
1. In a data entry system, a keyboard apparatus having at least one keyboard configuration of alphanumeric symbols disposed as energizeable elements on at least one plane, said apparatus comprising:
- keyboard selection means having a keyboard with at least one labeled key and a plurality of transparent regions with unlabeled keys, said selection means including mode control means responsive to actuation of at least one of the labeled keys for selecting a first and a second mode of operation, and for selecting a keyboard configuration during said first mode, said keyboard selection means including means for selecting one of said planes; and
keyboard display means having at least one plane of energizeable elements disposed beneath the keyboard, and coupled to said keyboard selection means for electronically labeling the unlabeled keys during said first mode by energizing selected portions of selected ones of the energizeable elements on a selected plane, in accordance with the selected keyboard configuration and displaying the selected keyboard configuration of alphanumeric symbols through the transparent regions, the electronically labeled keys and selected ones of the labeled keys being actuatable during said second mode for entering information indicated by their labels.
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Abstract
A calculator system having a transparent keyboard includes an apparatus for electronically labeling the keyboard by displaying alphanumeric symbols through the keyboard. The apparatus comprises a keyboard selection device and a liquid crystal keyboard display device having a predetermined number of display planes each containing preselected symbols. The keyboard selection device operates both as a selection device and as an annunciator-feedback device, for selecting the symbols or legends of a given plane to label or configure the keyboard, and for feeding back to a user of the system the status of the selection device when it is activated. An alternative embodiment of the invention utilizes light-emitting diodes (LED'"'"'s) for labeling the keyboard.
149 Citations
19 Claims
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1. In a data entry system, a keyboard apparatus having at least one keyboard configuration of alphanumeric symbols disposed as energizeable elements on at least one plane, said apparatus comprising:
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keyboard selection means having a keyboard with at least one labeled key and a plurality of transparent regions with unlabeled keys, said selection means including mode control means responsive to actuation of at least one of the labeled keys for selecting a first and a second mode of operation, and for selecting a keyboard configuration during said first mode, said keyboard selection means including means for selecting one of said planes; and keyboard display means having at least one plane of energizeable elements disposed beneath the keyboard, and coupled to said keyboard selection means for electronically labeling the unlabeled keys during said first mode by energizing selected portions of selected ones of the energizeable elements on a selected plane, in accordance with the selected keyboard configuration and displaying the selected keyboard configuration of alphanumeric symbols through the transparent regions, the electronically labeled keys and selected ones of the labeled keys being actuatable during said second mode for entering information indicated by their labels. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A method of electronically labeling a keyboard with at least one keyboard configuration of alphanumeric symbols, the symbols being displayable from at least one substantially transparent plane of energizeable elements, the keyboard having at least one labeled key and a plurality of transparent regions with unlabeled keys, one of said labeled keys being disposed for selecting one of first and second modes of operation, said method comprising the steps of:
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selecting a first mode of operation; selecting a keyboard configuration of alphanumeric symbols during said first mode by selecting one of said transparent planes of energizeable elements; and displaying the selected configuration of alphanumeric symbols through the transparent regions during said first mode to electronically label the unlabeled keys in response to actuation of at least one of the labeled keys, by energizing selected portions of selected ones of the energizeable elements on a selected plane in accordance with the keyboard configuration selected, the electronically labeled keys and selected ones of the labeled keys being actuatable during said second mode for entering information indicated by their labels. - View Dependent Claims (11, 12, 13, 14)
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15. A keyboard having at least one keyboard configuration of alphanumeric symbols disposed as energizeable elements on at least one plane, said keyboard being responsive to means for selecting at least two modes of operation, means for selecting a keyboard configuration by energizing selected ones of the elements on a selected plane, and means for displaying the selected configuration, said keyboard comprising:
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a cover portion with at least one labeled key and a plurality of transparent unlabeled key regions, the labeled key being disposed for initiating the selection of one of the two modes of operation and for initiating the selection of a configuration of alphanumeric symbols during a first mode, to electronically label the unlabeled key regions; a conductive portion disposed below said cover portion and having a first transparent portion located below said transparent unlabeled key regions; and a display portion disposed below said conductive portion and having a second transparent portion located below said first transparent portion, said second transparent portion having at least one substantially transparent plane with the plurality of energizeable elements for producing and displaying through said transparent regions and portions at least one configuration of alphanumeric symbols to electronically label, during said first mode, the unlabeled key regions in accordance with the selected configuration, the electronically labeled key regions and the labeled keys being actuatable during a second mode for making keyboard entries indicated by their labels. - View Dependent Claims (16, 17, 18, 19)
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Specification