Patent US4379288A successfully refreshed from Google Patents.
US4379288A
Expired / Lapsed
US
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Means for encoding ideographic characters
Assignee: Individual
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Filing: 1980-03-11
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Granted: 1983-04-05
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Expires: 2000-03-11
Abstract
Abstract A word processing system for Chinese type characters includes a keyboard with a generally standard key arrangement for encoding the characters in accordance with their basic stroke type and sequence. Up to eight basic stroke types may be employed, although a five stroke system is preferred. Recurrent code sequences of two, three, four and five strokes are identified. An "end of character" code may be generated with the space bar. Preferred sequences are assigned key positions so as to provide an ergonometrically efficient keyboard. Average typing speeds using the keyboard are comparable on a character/word basis to those for English.
Inventors
- 👤 Daniel L. Leung
- 👤 Lai-Wo S. Leung
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 11:15
CPC Classifications
G; G06; G06F; G06F3/00; G06F3/01; G06F3/018
Claims Analysis
Total Claims: 21
Claim 1
Independent Claim
81 words
Apparatus for encoding Chinese type characters in accordance with their basic stroke type and sequence comprising a keyboard having a plurality of up to eight inclusive of monographic keys, and a plurality of digraphic keys, key responsive means responsive to the actuation of each said monographic key for generating a code signal representative of a basic stroke and to the actuation of each said digraphic key for generating a code signal representative of a sequence of said basic strokes of two.
Claim 2
Dependent Claim
81 words
Apparatus for encoding Chinese type characters in accordance with their basic stroke type and sequence comprising a keyboard having a plurality of up to eight inclusive of monographic keys, and a plurality of digraphic keys, key responsive means responsive to the actuation of each said monographic key for generating a code signal representative of a basic stroke and to the actuation of each said digraphic key for generating a code signal representative of a sequence of said basic strokes of two.
Claim 3
Dependent Claim
14 words
Apparatus in accordance with claim 1, wherein the number of monographic keys is five.
Claim 4
Dependent Claim
15 words
Apparatus in accordance with claim 1, wherein the number of digraphic keys is about fifteen.
Claim 5
Dependent Claim
44 words
Apparatus in accordance with claim 1, further including a plurality of trigraphic keys, and wherein said key responsive means is responsive to the actuation of each said trigraphic key for generating a code signal representative of a sequence of said basic strokes of three.
Claim 6
Dependent Claim
16 words
Apparatus in accordance with claim 4, wherein the number of said trigraphic keys is about five.
Claim 7
Dependent Claim
32 words
Apparatus in accordance with claim 4, wherein the stroke sequence assigned to each digraphic and trigraphic keys is selected from two and three stroke sequences generally having the highest stroke-saving function values.
Claim 8
Dependent Claim
42 words
Apparatus in accordance with claim 4, further including at least one tetragraphic key and at least one pentagraphic key, and wherein said key responsive means respectively generates a code signal representative of a sequence of said basic strokes of four and five.
Claim 9
Dependent Claim
26 words
Apparatus as defined in claim 4, wherein said keys are assigned to positions locating in three horizontal ranks, each rank consisting of about 10 said keys.
Claim 10
Dependent Claim
37 words
Apparatus as defined in claim 4, wherein said keys are assigned to positions locating in three horizontal ranks, and wherein said monographic keys locate in finger positions in the middle rank remote from the central keys thereof.
Claim 11
Dependent Claim
72 words
Apparatus as defined in claim 4, wherein each said character encoding key has an indicium thereon in the form of an arabic numeral, each said monographic key having a single digit numeral indicative of the basic stroke type represented by said key, and each said key having a graphicity of greater than one having a sequence of single digit numerals in accordance with the sequence of basic strokes represented by that key.
Claim 12
Dependent Claim
32 words
Apparatus as defined in claim 4, including a space bar, and wherein said key responsive means is responsive to the actuation of said space bar to generate an end of code signal.
Claim 13
Dependent Claim
104 words
A keyboard for encoding Chinese type characters in accordance with five basic strokes and the sequence thereof comprising three horizontal ranks, each rank comprising about ten keys wherein all character coding keys locate, wherein five said keys locating in positions in the middle rank are monographic and representative of a basic stroke, and about twenty three said keys are polygraphic, representative of a sequence of basic strokes of two or more, at least a portion of said polygraphic keys being digraphic, means responsive to the actuation of said keys to generate a code signal representative of the stroke or sequence of strokes represented thereby.
Claim 14
Dependent Claim
104 words
A keyboard for encoding Chinese type characters in accordance with five basic strokes and the sequence thereof comprising three horizontal ranks, each rank comprising about ten keys wherein all character coding keys locate, wherein five said keys locating in positions in the middle rank are monographic and representative of a basic stroke, and about twenty three said keys are polygraphic, representative of a sequence of basic strokes of two or more, at least a portion of said polygraphic keys being digraphic, means responsive to the actuation of said keys to generate a code signal representative of the stroke or sequence of strokes represented thereby.
Claim 15
Dependent Claim
36 words
A keyboard apparatus in accordance with claim 12, wherein the polygraphic code sequence represented by said polygraphic keys are those code sequences selected from all possible code sequences generally having the highest stroke saving function values.
Claim 16
Dependent Claim
31 words
A keyboard in accordance with claim 12 wherein said polygraphic keys include about fifteen digraphic keys, about five trigraphic keys, at least one tetragraphic key and at least one pentagraphic key.
Claim 17
Dependent Claim
31 words
A keyboard apparatus in accordance with claim 13, wherein the keys are assigned to positions on the keyboard as determined generally in accordance with their monostrike frequency and dual strike frequency.
Claim 18
Dependent Claim
23 words
A keyboard apparatus in accordance with claim 13, wherein each monographic key locates in the middle rank remote from the central keys thereof.
Claim 19
Dependent Claim
18 words
A keyboard apparatus in accordance with claim 13, including a space bar representative of an "end of character".
Claim 20
Dependent Claim
30 words
Apparatus as defined in claim 1, 2 or 4, further including output information means responsive to the input of said code signals, writing means responsive to said output information means.
Claim 21
Dependent Claim
26 words
Apparatus defined in claim 12, 13 or 14 further including output information means responsive to said code signals, writing means responsive to said output information means.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1986-04-04 | 1986-10-04 | 1987-04-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-04-04 | 1990-10-04 | 1991-04-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-04-04 | 1994-10-04 | 1995-04-05 | $7700.00 | Window Closed / Lapsed |