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Patent EP0085645A2 successfully refreshed from Google Patents.
EP0085645A2
Expired / Lapsed
EP
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Keyboard apparatus
Assignee: Ergoplic Makashot 1981 Ltd
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Filing: 1983-02-01
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Granted: —
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Expires: 2003-02-01
Abstract
Abstract A chordic keyboard including a plurality of keys, each key having a predetermined travel path and an entry location disposed at a predetermined location along the predetermined travel path, the plurality of keys arranged for engagement by respective first, second and third fingers, the first, second and third keys having differences between themselves in one or more of their predetermined travel paths, entry locations and force requirements. There is also provided a method for high speed teaching of chordic key code operation comprising the steps of: selecting a plurality of chordic keyboard engagement location arrangements having a predetermined visually sensible geometric relationship therebetween; assigning to each of the plurality of location engagement arrangements a symbol corresponding thereto; and presenting the plurality of location engagement arrangements together with a word defined by the plurality of symbols corresponding thereto for memorization by an operator during training.
Inventors
- 👤 Zohar Eilam
- 👤 Zeev Bar Itzchak
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-08 19:52
CPC Classifications
B; B41; B41J; B41J5/00; B41J5/08; B41J5/10; G; G06; G06F; G06F3/00; G06F3/01; G06F3/02; G06F3/023; G06F3/0233; G06F3/0235
Claims Analysis
Total Claims: 41
Claim 1
Independent Claim
79 words
A chordic keyboard comprising: a plurality of keys, each key having a predetermined travel path and a data entry location disposed at a predetermined location along said predetermined travel path, said plurality of keys including at least first, second and third fingers, at least two of said first, second and third keys differing from each other in at least one of said predetermined travel paths, the position of said data entry location and the force required for key travel.
Claim 2
Dependent Claim
79 words
A chordic keyboard comprising: a plurality of keys, each key having a predetermined travel path and a data entry location disposed at a predetermined location along said predetermined travel path, said plurality of keys including at least first, second and third fingers, at least two of said first, second and third keys differing from each other in at least one of said predetermined travel paths, the position of said data entry location and the force required for key travel.
Claim 3
Dependent Claim
29 words
A chordic keyboard comprising a plurality of keys, each of said plurality of keys having a predetermined travel path of length in the range of 3 - 9 mm.
Claim 4
Dependent Claim
29 words
A chordic keyboard comprising a plurality of keys, each of said plurality of keys having a predetermined travel path of length in the range of 3 - 9 mm.
Claim 5
Dependent Claim
25 words
A chordic keyboard including a plurality of keys, each of said plurality of keys having a linear force/dis- placement characteristic over its entire travel path.
Claim 6
Dependent Claim
25 words
A chordic keyboard including a plurality of keys, each of said plurality of keys having a linear force/dis- placement characteristic over its entire travel path.
Claim 7
Dependent Claim
49 words
A chordic keyboard comprising a plurality of keys, each key having a predetermined travel path and a data entry location located at a position between one-third and one-half of the distance from the at rest position of the key to its fully depressed position along said predetermined travel path.
Claim 8
Dependent Claim
49 words
A chordic keyboard comprising a plurality of keys, each key having a predetermined travel path and a data entry location located at a position between one-third and one-half of the distance from the at rest position of the key to its fully depressed position along said predetermined travel path.
Claim 9
Dependent Claim
36 words
A chordic keyboard comprising a plurality of keys, each key having a predetermined travel path which is arranged along a travel axis, the travel axes of at least two of said plurality of keys being non-parallel.
Claim 10
Dependent Claim
36 words
A chordic keyboard comprising a plurality of keys, each key having a predetermined travel path which is arranged along a travel axis, the travel axes of at least two of said plurality of keys being non-parallel.
Claim 11
Dependent Claim
30 words
A chordic keyboard according to claim 5 and wherein said travel axes arranged to be parallel to the axes of force exertion of human fingers arranged to engage respective keys.
Claim 12
Dependent Claim
30 words
A chordic keyboard according to claim 1 and also comprising handrest means for holding an operator's hand at a height approximately equal to or higher than said plurality of keys.
Claim 13
Dependent Claim
30 words
A chordic keyboard according to claim 2 and also comprising handrest means for holding an operator's hand at a height approximately equal to or higher than said plurality of keys.
Claim 14
Dependent Claim
30 words
A chordic keyboard according to claim 3 and also comprising handrest means for holding an operator's hand at a height approximately equal to or higher than said plurality of keys.
Claim 15
Dependent Claim
30 words
A chordic keyboard according to claim 4 and also comprising handrest means for holding an operator's hand at a height approximately equal to or higher than said plurality of keys.
Claim 16
Dependent Claim
30 words
A chordic keyboard according to claim 5 and also comprising handrest means for holding an operator's hand at a height approximately equal to or higher than said plurality of keys.
Claim 17
Dependent Claim
44 words
A chordic keyboard according to claim 1 and wherein each of said plurality of keys comprises an elongate key engagement surface arranged for pivotal motion relative to a pivot location disposed other than forward of said key engagement surface and underlying an operator's finger.
Claim 18
Dependent Claim
30 words
A chordic keyboard according to claim 1 and also comprising means for providing a repeat key output when a key is depressed for a time beyond a predetermined threshold duration.
Claim 19
Dependent Claim
30 words
A chordic keyboard according to claim 2 and also comprising means for providing a repeat key output when a key is depressed for a time beyond a predetermined threshold duration.
Claim 20
Dependent Claim
30 words
A chordic keyboard according to claim 3 and also comprising means for providing a repeat key output when a key is depressed for a time beyond a predetermined threshold duration.
Claim 21
Dependent Claim
30 words
A chordic keyboard according to claim 4 and also comprising means for providing a repeat key output when a key is depressed for a time beyond a predetermined threshold duration.
Claim 22
Dependent Claim
31 words
A chordic keyboard comprising a plurality of keys each including a key engagement surface arranged for pivotal motion relative to a pivot location disposed other than underlying said key engagement surface.
Claim 23
Dependent Claim
31 words
A chordic keyboard comprising a plurality of keys each including a key engagement surface arranged for pivotal motion relative to a pivot location disposed other than underlying said key engagement surface.
Claim 24
Dependent Claim
17 words
A chordic keyboard according to claim 17 and wherein said key engagement surface defines an elongate surface.
Claim 25
Dependent Claim
20 words
A chordic keyboard according to claim 17 and wherein said plurality of keys includes keys having different travel path lengths.
Claim 26
Dependent Claim
20 words
A chordic keyboard according to claim 17 and wherein said plurality of keys includes keys having different force displacement characteristics.
Claim 27
Independent Claim
72 words
A method for high speed teaching of chordic keyboard code operation comprising the steps of: selecting a plurality of chordic keyboard location engagement arrangements having apredetermined visually sensible geometric relationship therebetween; assigning to each of said plurality of location engagement arrangements a symbol corresponding thereto; and presenting said plurality of location engagement arrangements together with a word defined by the plurality of symbols corresponding thereto for memorization by an operator during training.
Claim 28
Independent Claim
72 words
A method for high speed teaching of chordic keyboard code operation comprising the steps of: selecting a plurality of chordic keyboard location engagement arrangements having apredetermined visually sensible geometric relationship therebetween; assigning to each of said plurality of location engagement arrangements a symbol corresponding thereto; and presenting said plurality of location engagement arrangements together with a word defined by the plurality of symbols corresponding thereto for memorization by an operator during training.
Claim 29
Dependent Claim
26 words
A method according to claim 21 and wherein said plurality of location engagement arrangements and corresponding words defines a group which is remembered by interassociation therebetween.
Claim 30
Dependent Claim
75 words
A method according to claim 21 and wherein there is provided a high speed teachable code for use with chordic keyboards and comprising: a first plurality of groups of associated symbols and location engagement arrangements, each group comprising: a second plurality of location engagement arrangements having a visually sensible geometrical relationship therebetween, each of said location engagement arrangements having associated therewith a symbol, said symbols of each group being combinable in a readily memorizable word.
Claim 31
Dependent Claim
12 words
A method according to claim 23 and wherein said symbols comprise letters.
Claim 32
Dependent Claim
24 words
A method according to claim 21 and wherein location engagement arrangements having relatively high motoric efficiency are assigned symbols appearing with relatively high frequency.
Claim 33
Dependent Claim
36 words
A method according to claim 21 and wherein a plurality of location engagement arrangements defining a geometric pattern which is relatively easy to remember is assigned to a plurality of symbols appearing with relatively high frequency.
Claim 34
Dependent Claim
23 words
A method according to claim 21 and wherein symbols appearing in combination with relatively high frequency are assigned to non-overlapping location engagement arrangements.
Claim 35
Dependent Claim
68 words
- A high speed teachable code for use with chordic keyboards and comprising: a first plurality of groups of associated symbols and key location engagement arrangements, each group comprising: a second plurality of key location engagement arrangements having a visually sensible geometrical relationship therebetween, each of said key location engagement arrangements having associated therewith a symbol, said symbols of each group being combinable in a readily memorizable word.
Claim 36
Dependent Claim
68 words
- A high speed teachable code for use with chordic keyboards and comprising: a first plurality of groups of associated symbols and key location engagement arrangements, each group comprising: a second plurality of key location engagement arrangements having a visually sensible geometrical relationship therebetween, each of said key location engagement arrangements having associated therewith a symbol, said symbols of each group being combinable in a readily memorizable word.
Claim 37
Dependent Claim
30 words
A high speed teachable code for use with chordic keyboards according to claim 28 and wherein said second plurality of location engagement arrangements together define a readily memorizable geometrical configuration.
Claim 38
Dependent Claim
88 words
A chordic keyboard comprising: a plurality of keys arranged on a base, said plurality of keys defining a set of possible key location engagement arrangements, said set including a first plurality of groups of key location engagement arrangements each associated with a corresponding group of symbols, each group comprising a second plurality of key location engagement arrangements having a visually sensible geometrical relationship therebetween each of said key location engagement arrangements having associated therewith a symbol, said symbols of each group being combinable in a readily memorizable word.
Claim 39
Dependent Claim
88 words
A chordic keyboard comprising: a plurality of keys arranged on a base, said plurality of keys defining a set of possible key location engagement arrangements, said set including a first plurality of groups of key location engagement arrangements each associated with a corresponding group of symbols, each group comprising a second plurality of key location engagement arrangements having a visually sensible geometrical relationship therebetween each of said key location engagement arrangements having associated therewith a symbol, said symbols of each group being combinable in a readily memorizable word.
Claim 40
Dependent Claim
23 words
A chordic keyboard according to claim 30 and wherein said second plurality of location engagement arrangements together define a readily memorizable geometrical configuration.
Claim 41
Dependent Claim
30 words
A chordic keyboard according to claim 31 and wherein said first plurality of groups are differentiated by a single parameter, such as the number of keys engaged for each symbol.
References Cited (Backward Citations)
No citation records indexed.
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