US3916100A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for sending-out handwritten pattern information
Assignee: KDDI Corp
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Filing: 1974-02-26
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Granted: 1975-10-28
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Expires: 1994-02-26
Abstract
Abstract An apparatus for sending-out orthogonal coordinate signals of a handwritten pattern, in which a handwriting pen is supported by an arm having a variable length with respect to a reference position. The arm is supported by a supporting frame at the reference position to turn with respect to the reference position. The substantial length of the arm from the reference position to the handwriting position is converted to one of the orthogonal coordinate signals. A rotation angle of the arm with reference to a reference line passing through the reference position is converted to the other of the orthogonal coordinate signals. The orthogonal coordinate signals are simultaneously produced with the handwriting operation of the handwritten pattern.
Inventors
- 👤 Nobuhiro Azuma
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 09:55
CPC Classifications
G; G08; G08C; G08C21/00
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
268 words
A pattern information transmitting apparatus, comprising: a sine/cosine servo potentiometer having a shaft defining a reference axis; a supporting frame mounted on said shaft to turn therewith; a pinion gear rotatably mounted on said supporting frame, an arm having a rack portion extending along a portion of the length of said arm, said supporting frame having mounting means for slidably mounting said arm to orthogonally intersect said reference axis and with said rack portion engaging said pinion gear to rotate said pinion gear as said arm is displaced in a longitudinal direction thereof; a second potentiometer cooperative with said pinion gear to change resistance in proportion to the angular displacement of said pinion gear; a pointer mounted at an end of said arm remote from said supporting frame to facilitate positioning of the remote end of said arm radially and angularly about said reference axis to define a pattern in a reference plane; means for applying direct current to said potentiometers to develop direct current sine, cosine and distance output signals representative of the sine and cosine of the angular position of the remote end of said arm from said reference axis and the distance of the remote end of said arm from said reference axis, respectively; a first multiplier circuit receptive of said sine output signal and said distance output signal for developing a signal proportional to the product of said sine and distance output signals; and a second multiplier circuit receptive of said cosine output signal and said distance output signal for developing a signal proportional to the produce of said cosine and distance output signals.
Claim 2
Dependent Claim
268 words
A pattern information transmitting apparatus, comprising: a sine/cosine servo potentiometer having a shaft defining a reference axis; a supporting frame mounted on said shaft to turn therewith; a pinion gear rotatably mounted on said supporting frame, an arm having a rack portion extending along a portion of the length of said arm, said supporting frame having mounting means for slidably mounting said arm to orthogonally intersect said reference axis and with said rack portion engaging said pinion gear to rotate said pinion gear as said arm is displaced in a longitudinal direction thereof; a second potentiometer cooperative with said pinion gear to change resistance in proportion to the angular displacement of said pinion gear; a pointer mounted at an end of said arm remote from said supporting frame to facilitate positioning of the remote end of said arm radially and angularly about said reference axis to define a pattern in a reference plane; means for applying direct current to said potentiometers to develop direct current sine, cosine and distance output signals representative of the sine and cosine of the angular position of the remote end of said arm from said reference axis and the distance of the remote end of said arm from said reference axis, respectively; a first multiplier circuit receptive of said sine output signal and said distance output signal for developing a signal proportional to the product of said sine and distance output signals; and a second multiplier circuit receptive of said cosine output signal and said distance output signal for developing a signal proportional to the produce of said cosine and distance output signals.
Claim 3
Dependent Claim
53 words
A pattern information transmitting apparatus according to claim 1 further comprising, a table for defining a reference plane; and a plurality of supporting members extending from said table wherein one of said supporting members comprises said sine/cosine servo potentiometer whereby said reference axis is maintained at a fixed position relative to said table.
Claim 4
Dependent Claim
39 words
A pattern information transmitting apparatus according to claim 1 further comprising, a pair of analog-to-digital converters, each receptive of the output signal from a respective one of said multiplier circuits, for converting the multiplier output signals to digital signals.
Claim 5
Dependent Claim
26 words
A pattern information transmitting apparatus according to claim 1 further comprising, direct current voltage sources connected to said means for applying direct current to said potentiometers.
Claim 6
Dependent Claim
16 words
A pattern information transmitting apparatus according to claim 1, wherein said pointer comprises means for writing.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-10-27 | 1979-04-28 | 1979-10-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-10-27 | 1983-04-28 | 1983-10-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-10-27 | 1987-04-28 | 1987-10-28 | $7700.00 | Window Closed / Lapsed |