EP0367282A2
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Coordinate input apparatus
Assignee: Canon Inc
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Filing: 1989-11-03
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Granted: —
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Expires: 2009-11-03
Abstract
Abstract There is a coordinate input apparatus in which a vibration input by a vibration pen is detected by vibration sensors attached to predetermined positions on a vibration propagating plate made of a transparent glass plate or the like and the coordinate position of the pen on the plate is detected on the basis of the vibration propagation times which are required until the vibration is detected by the sensors. Portions near edge sides out of the coordinate input area of the plate are gently largely curved, thereby preventing the generation of reflected waves from the periphery of the plate. The ratio of the effective coordinate input area to the size of the whole apparatus main body id set to a large value, so that the apparatus can be miniaturized.
Inventors
- 👤 Yuichiro Yoshimura
- 👤 Shinnosuke Taniishi
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-26 22:08
CPC Classifications
G; G06; G06F; G06F3/00; G06F3/01; G06F3/03; G06F3/041; G06F3/043; G06F3/0433
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
79 words
A coordinate input apparatus in which a vibration which was input from a vibration pen is detected by a plurality of vibration sensors attached at predetermined positions on a vibration propagating plate and the coordinate position of the vibration pen is detected on the basis of times which are required until the vibration is detected by the vibration sensors, wherein portions near edge sides out of a coordinate input area of the vibration propagating plate have a curved shape.
Claim 2
Dependent Claim
79 words
A coordinate input apparatus in which a vibration which was input from a vibration pen is detected by a plurality of vibration sensors attached at predetermined positions on a vibration propagating plate and the coordinate position of the vibration pen is detected on the basis of times which are required until the vibration is detected by the vibration sensors, wherein portions near edge sides out of a coordinate input area of the vibration propagating plate have a curved shape.
Claim 3
Dependent Claim
16 words
An apparatus according to claim 1, further having display means provided under the vibration propagating plate.
Claim 4
Dependent Claim
17 words
An apparatus according to claim 1, wherein said vibration propagating plate is made of a glass plate.
Claim 5
Dependent Claim
97 words
A coordinate input apparatus comprising: a vibration input pen to input a vibration; a vibration propagating plate in which portions near side edges out of a coordinate input area have a curved shape and to which the vibration which was input to the coordinate input area by the vibration input pen is propagated; vibration sensors to detect the vibrations which propagate in the vibration propagating plate; and operation control means for calculating coordinates of the position to which the vibration input pen touched on the basis of propagation times of the vibration detected by the vibration sensors.
Claim 6
Dependent Claim
97 words
A coordinate input apparatus comprising: a vibration input pen to input a vibration; a vibration propagating plate in which portions near side edges out of a coordinate input area have a curved shape and to which the vibration which was input to the coordinate input area by the vibration input pen is propagated; vibration sensors to detect the vibrations which propagate in the vibration propagating plate; and operation control means for calculating coordinates of the position to which the vibration input pen touched on the basis of propagation times of the vibration detected by the vibration sensors.
Claim 7
Dependent Claim
50 words
An apparatus according to claim 4, wherein said operation control means calculates the coordinates of the touch position of the vibration input pen on the basis of the propagation times of both of a group velocity waveform and a phase velocity waveform of the vibration detected by the vibration sensors.
Claim 8
Dependent Claim
16 words
An apparatus according to claim 4, further having display means provided under the vibration propagating plate.
Claim 9
Dependent Claim
17 words
An apparatus according to claim 4, wherein said vibration propagating plate is made of a glass plate.
Claim 10
Dependent Claim
102 words
A coordinate input apparatus in which a vibration which was input from a vibration pen is detected by a plurality of vibration sensors attached at predetermined positions on a vibration propagating plate and the coordinate position of the vibration pen is detected on the basis of times which are required until the vibration is detected by the vibration sensors, wherein portions near side edges out of a coordinate input area of the vibration propagating plate have a curved shape and an upper layer and a lower layer of the vibration propagating plate are coupled at an edge portions of said curved portions.
Claim 11
Dependent Claim
102 words
A coordinate input apparatus in which a vibration which was input from a vibration pen is detected by a plurality of vibration sensors attached at predetermined positions on a vibration propagating plate and the coordinate position of the vibration pen is detected on the basis of times which are required until the vibration is detected by the vibration sensors, wherein portions near side edges out of a coordinate input area of the vibration propagating plate have a curved shape and an upper layer and a lower layer of the vibration propagating plate are coupled at an edge portions of said curved portions.
Claim 12
Dependent Claim
36 words
An apparatus according to claim 8, wherein a vibration preventing material to reduce reflected waves of the vibration is provided in an intermediate layer sandwiched by said upper and lower layers of the vibration propagating plate.
Claim 13
Dependent Claim
17 words
An apparatus according to claim 8, wherein said vibration propagating plate is made of a glass plate.
References Cited (Backward Citations)
No citation records indexed.
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