EP0507269A2
Expired / Lapsed
EP
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Writing device for storing handwriting
Assignee: Yashima Electric Co Ltd
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Filing: 1992-04-01
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Granted: —
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Expires: 2012-04-01
Abstract
Abstract When characters and the like are written with a writing device (2, 45, 53, 61), handwriting is detected by a handwriting detection circuit (21) based on outputs from optical sensors (17) and stress sensors (13) and is stored in a handwriting memory section (23, 73). The handwriting memory section (23, 73) stores the handwriting whereby it can be used as input data for a computer (36) and the like without reductions in the convenience in using the writing device (2, 45, 53, 61).
Inventors
- 👤 Toshio Taguchi
- 👤 Kiyoshi Agusa
- 👤 Takashi Fukuda
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-03 20:47
CPC Classifications
G; G06; G06F; G06F3/00; G06F3/01; G06F3/03; G06F3/033; G06F3/038; G06F3/0386; G06F3/0354; G06F3/03545; G06V; G06V10/00; G06V10/10; G06V10/12
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
67 words
A writing device for storing handwriting comprising: writing means (2, 45, 53, 61); handwriting detection means (6x, 6y, 6z, 7, 9, 10, 13, 13x, 13y, 13z, 17, 21, 42, 43, 44, 44a, 44b, 44c, 54a, 54b, 55a, 55b, 62x, 62y) for detecting a locus of a character written by said writing means (2, 45, 53, 61); and storing means (23, 73) for storing the detected locus .
Claim 2
Dependent Claim
99 words
A writing device as set forth in claim 1, wherein said handwriting detection means (6x, 6y, 6z, 7, 9, 10, 13, 13x, 13y, 13z, 17, 21, 42, 43, 44, 44a, 44b, 44c, 54a, 54b, 55a, 55b, 62x, 62y) includes an optical sensor (17) for optically detecting written handwriting, a stress sensor (13) for detecting force applied to said writing means (2, 45, 53, 61) during a writing operation, and locus detection means (21) for detecting the locus of said writing means (2, 45, 53, 61) based on signals output from said optical sensor (17) and said stress sensor (13).
Claim 3
Dependent Claim
31 words
A writing device as set forth in claim 2, wherein said optical sensor (17) includes a lens (6x, 6y, 6z), an optical fiber (7) and a charge coupled device chip (10).
Claim 4
Dependent Claim
39 words
A writing device as set forth in claim 2 or 3, wherein said optical sensor (17) includes three lenses (6x, 6y, 6z) which are disposed at every 120 degrees in shifted positions with respect to said writing means (2).
Claim 5
Dependent Claim
40 words
A writing device as set forth in one of claims 2 to 4, wherein said optical sensor (17) includes a lens (43) which surrounds said writing means (45) and a CCD chip (44) which also surrounds said writing means (45).
Claim 6
Dependent Claim
25 words
A writing device as set forth in claim 2, wherein said optical sensor (17) includes a CCD chip (44) which surrounds said writing means (45).
Claim 7
Dependent Claim
100 words
A writing device as set forth in one of claims 1 to 6, wherein said handwriting detection means (6x, 6y, 6z, 7, 9, 10, 13, 13x, 13y, 13z, 17, 21, 42, 43, 44, 44a, 44b, 44c, 54a, 54b, 55a, 55b, 62x, 62y) includes at least one pair of lenses (54a, 54b) which are disposed synmetrically with respect to said writing means (53), a CCD chip (10) and image compensation means (21) for obtaining an image of the leading edge of said writing means (53) based on image signals corresponding to each lens (54a, 54b) obtained by said CCD chip (10).
Claim 8
Dependent Claim
52 words
A writing device as set forth in one of claims 1 to 7, wherein said handwriting detection means (6x, 6y, 6z, 7, 9, 10, 13, 13x, 13y, 13z, 17, 21, 42, 43, 44, 44a, 44b, 44c, 54a, 54b, 55a, 55b, 62x, 62y) includes an optical sensor (21) and locus detection means (21).
Claim 9
Dependent Claim
63 words
A writing device as set forth in one of claims 1 to 8, comprising casing means (1, 71, 72) for housing said writing means (2, 45, 53, 61), said handwriting detection means (6x, 6y, 6z, 7, 9, 10, 13, 13x, 13y, 13z, 17, 21, 42, 43, 44, 44a, 44b, 44c, 54a, 54b, 55a, 55b, 62x, 62y) and said storing means (23, 73) therein.
Claim 10
Dependent Claim
46 words
A writing device as set forth in claim 9, wherein said casing means (1) is arranged with two casing part means (71, 72) which are removably mountable to one another and said handwriting storing means (73) is housed in one of said casing part means (72).
References Cited (Backward Citations)
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