§
PatentCue
Patent Intelligence
Join Waitlist Sign In
← Back to Patent Explorer
EP0284048A2 Expired / Lapsed EP ⏱️ 0.0 years remaining

Coordinates input apparatus

Assignee: Canon Inc
•
Filing: 1988-03-23
•
Granted: —
•
Expires: 2008-03-23
📄 Original PDF 🌐 Google Patents 🔄 Sync Now

Abstract

Abstract A coordinates input apparatus for detecting coordinates of an instructed position from a vibration propagation time on a vibration propagation plate is provided. This apparatus comprises: a vibration pen to generate a vibration; a vibration propagation plate with which the vibration pen is come into contact and which transmits the vibration; a sensor which is arranged in contact relation with the vibration propagation plate and detects the vibration; a vibration-­proof material attached to the periphery of the vibration propagation plate so as to have a width of 1/2 of a wavelength of the elastic wave of the vibration; and an operation controller to calculate the contact position of the vibration pen on the vibration propagation plate from the detection time when the vibration was detected by the sensor. The sensor detects the surface wave of the vibration-proof material. With this apparatus, the coordinates of the instructed point can be accurately detected using the vibration with being hardly influenced by the reflected waves from the periphery of the plate.

Inventors

  • 👤 Yuichiro Yoshimura
  • 👤 Atsushi Tanaka
  • 👤 Kiyoshi Kaneko

Bibliographic Details

Application Number —
Jurisdiction EP
Data Source google_patents
Last Synchronized 2026-11-05 04:54
CPC Classifications
G; G06; G06F; G06F3/00; G06F3/01; G06F3/03; G06F3/041; G06F3/043; G06F3/0433

Claims Analysis

Total Claims: 8
Claim 1
Independent Claim 77 words
A coordinates input apparatus comprising: a vibration pen to generate a vibration; a vibration propagation plate with which said vibration pen is come into contact and which propagates the vibration; a sensor which is arranged in contact relation with said vibration propagation plate and detects the vibration; and a vibration-proof material which is attached to a periphery of the vibration propagation plate so as to have a width corresponding to 1/2 of a wavelength of said vibration.
Claim 2
Dependent Claim 77 words
A coordinates input apparatus comprising: a vibration pen to generate a vibration; a vibration propagation plate with which said vibration pen is come into contact and which propagates the vibration; a sensor which is arranged in contact relation with said vibration propagation plate and detects the vibration; and a vibration-proof material which is attached to a periphery of the vibration propagation plate so as to have a width corresponding to 1/2 of a wavelength of said vibration.
Claim 3
Dependent Claim 37 words
An apparatus according to claim 1, further having arithmetic operating means for calculating the contact position of said vibration pen on said vibration propagation plate from a detection time when said vibration was detected by said sensor.
Claim 4
Dependent Claim 22 words
An apparatus according to claim 1, wherein said sensor is arranged so as to detect a surface wave of said vibration-proof material.
Claim 5
Dependent Claim 99 words
A coordinates input apparatus comprising: a vibration pen to generate a vibration; a vibration propagation plate with which said vibration pen is come into contact and which propagates the vibration; a sensor to detect the vibration which is propagated in said vibration propagation plate, said sensor is arranged in contact relation with the vibration propagation plate at an inside position from a periphery of the vibration propagation plate by two or more wavelengths of the vibration; and arithmetic operating means for calculating the contact position of said vibration pen from a detection time of the vibration by said sensor.
Claim 6
Dependent Claim 99 words
A coordinates input apparatus comprising: a vibration pen to generate a vibration; a vibration propagation plate with which said vibration pen is come into contact and which propagates the vibration; a sensor to detect the vibration which is propagated in said vibration propagation plate, said sensor is arranged in contact relation with the vibration propagation plate at an inside position from a periphery of the vibration propagation plate by two or more wavelengths of the vibration; and arithmetic operating means for calculating the contact position of said vibration pen from a detection time of the vibration by said sensor.
Claim 7
Dependent Claim 19 words
An apparatus according to claim 4, wherein the vibration which is detected by said sensor is a surface wave.
Claim 8
Dependent Claim 36 words
An apparatus according to claim 4, further having a vibration-proof material which is attached to the periphery of said vibration propagation plate so as to have a width of 1/2 of a wavelength of said vibration.

References Cited (Backward Citations)

No citation records indexed.

USPTO Annuity & Maintenance Windows

Maintenance schedule is calculated for granted US utility patents.

Assigned Categories & Tags

No categories assigned to this patent yet.

Assign Category Tag