Pressure Stylus Patents (Class 178/19.04)
  • Patent number: 6882340
    Abstract: An electronic pen is provided with a casing. A sensor substrate is formed by arranging two comblike conductive patterns on a flexible substrate so that the conductive patterns are interleaved but do not come into contact with each other. The sensor substrate is wound around part of the casing and is thereby fixed. A pressure-sensitive conductive rubber member is arranged to cover the sensor substrate. A protective grip is provided to cover these portions. Accordingly, a sensor which senses finger contact or a pressure applied by a finger is formed. When a finger presses the protective grip, a circuit on a control substrate detects a change in the relationship between the conductive patterns between which continuity is established by the pressure-sensitive conductive rubber member. The detection is transmitted as operation information to a digitizer by exchanging electromagnetic waves with the digitizer.
    Type: Grant
    Filed: October 17, 2002
    Date of Patent: April 19, 2005
    Assignee: Wacom Co., Ltd.
    Inventors: Hiromichi Kanzaki, Yashuyuki Fukuashima
  • Patent number: 6853369
    Abstract: The present invention provides a variable capacity condenser having fewer components. A variable capacity condenser according to the present invention comprises a dielectric substance, two electrodes, and a flexible electrode. The dielectric substance has two end faces. The two electrodes are disposed on one end face of the dielectric substance. The flexible electrode faces the other end face of the dielectric substance. The flexible electrode is pressible by a pressing member to vary a distance between at least a portion of the flexible electrode and the other end face of the dielectric substance.
    Type: Grant
    Filed: April 19, 2001
    Date of Patent: February 8, 2005
    Assignee: Wacom Co., Ltd.
    Inventors: Yasuyuki Fukushima, Hiroyuki Fujitsuka
  • Patent number: 6801192
    Abstract: In an input pen having a pen-shaped casing, a ferrite core with a coil wound thereon and a ferrite chip are placed opposed to each other via an O-ring. The ferrite chip has a projection. When the input pen is operated, the projection and the ferrite core are moved closer together. When the ferrite chip is moved closer to the ferrite core during operation, the projection is placed substantially close to the ferrite core. Therefore, high responsivity is ensured without moving the ferrite chip into the coil, and there is no need to form an opening or a cavity in the ferrite core.
    Type: Grant
    Filed: September 21, 2001
    Date of Patent: October 5, 2004
    Assignee: Wacom Company Ltd.
    Inventors: Hiroyuki Fujitsuka, Yashuyuki Fukushima
  • Patent number: 6771254
    Abstract: A nib for a stylus for use with a tablet and stylus computer. The nib provides a desired amount of firmness and friction between the stylus and a writing surface of the tablet and stylus computer. A nib substrate material approximates a desired nib-and-writing-surface firmness and a desired amount of friction between the nib and the writing surface. A secondary material is optionally added to the nib substrate material to alter the amount of friction between the stylus nib and the writing surface.
    Type: Grant
    Filed: February 28, 2001
    Date of Patent: August 3, 2004
    Assignee: Microsoft Corporation
    Inventors: Bin An, Vincent Jesus
  • Patent number: 6731270
    Abstract: A piezoelectric transducer is provided, in which a piezoelectric shell has conductive layers on the outside and inside of the shell, which are adapted to be connected to a signal input source. When the conductive layers are activated, the piezoelectric layer resonates to produce an output signal waveform from the shell structure. An alternative embodiment includes a flat piezoelectric layer with opposing conductive layers, which is then formed into a shell structure. In preferred embodiments, an inner spool is located within the shell structure, which acts to increase the output sound pressure level for the transducer. To increase the sound pressure level further, the inner spool preferably includes a recessed area, which defines a void between the inner conductive layer on the shell and the recessed area. The void acts to increase the characteristic output sound pressure level for the transducer.
    Type: Grant
    Filed: October 21, 1998
    Date of Patent: May 4, 2004
    Assignee: Luidia Inc.
    Inventor: Carol A. Tosaya
  • Patent number: 6727892
    Abstract: In one embodiment of the invention, a hot spot is normally centered in an area of contact between a user's finger and a touch screen to position the hot spot on an icon or other feature thereby selecting a program or function corresponding to the icon or feature. When the contact area is near an edge, the hot spot is offset toward the edge so that it coincides more closely to the center of the users finger, thus allowing an icon or other feature adjacent the edge of the screen to be more easily selected. In another embodiment, a cursor is displayed on a touch screen at a location that is offset from the contact area between a finger and the screen. The cursor, which is used as the hot spot of the computer, is normally offset above the contact area except when the contact area is close to the bottom of the screen.
    Type: Grant
    Filed: May 20, 1999
    Date of Patent: April 27, 2004
    Assignee: Micron Technology, Inc.
    Inventor: Stephen C. Murphy
  • Patent number: 6710267
    Abstract: An input pen for a touch panel excellent in a using feeling without causing any flaw in a display, and an input pen. A touch ball made of, for example, an acetal resin is provided at a pen tip of an input pen. The touch ball is held via a first spring and a second spring. Furthermore, respective spring constants of the first spring and the second spring are set in such a manner as to establish the relationship of (a displacement of the first spring)>(a displacement of the second spring)>(a deformation of the touch ball) when pressing force for pressing the touch ball toward a main body shaft acts. Thus, it is possible to suppress any deformation of the soft touch ball even if the input pen is strongly pressed against a screen of a touch panel or the like.
    Type: Grant
    Filed: March 30, 2001
    Date of Patent: March 23, 2004
    Assignee: International Business Machines Corporation
    Inventors: Yoshifumi Natsuyama, Hiroshi Takatsuji, Yoshihiri Katsu
  • Patent number: 6683601
    Abstract: Disclosed is a user-friendly electronic apparatus having a pen and a panel as the input devices. The pen is tethered to the apparatus by a cord on which position data is recorded along its length direction. Responding to the readout of the position data, the CPU controls the reel-in operation according to the standby mode or the sleep mode of the apparatus. As the pen is held at a proper position on the apparatus by the CPU's control, the user is free from worrying about dropping, spoiling, or losing the pen. Besides, the operation of reeling-out the pen from a housing position in the apparatus allows the apparatus to automatically come back into an active mode from its sleep mode or standby mode.
    Type: Grant
    Filed: July 20, 2001
    Date of Patent: January 27, 2004
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventor: Kazuo Okamoto
  • Patent number: 6667740
    Abstract: A low cost x-y digitising system is provided for use in consumer electronic devices, such as portable digital assistants, mobile telephones, web browsers and the like. The digitiser includes a resonant stylus, an excitation winding for energising the resonant stylus and a set of sensor windings for sensing the signal generated by the stylus, from which the x-y position of the stylus is determined.
    Type: Grant
    Filed: January 5, 2001
    Date of Patent: December 23, 2003
    Assignee: Synaptics (UK) Limited
    Inventors: David T. Ely, Ian P. Collins, Peter D. Cauwood, Steven R. Brace
  • Patent number: 6642458
    Abstract: A touch screen device and method for co-extensively and contrastingly presenting text characters (34) and rendering ink (36) in a common area of a user interface. The text characters (34) and the rendering ink (36) are presented in relative contrast such that co-extensive text characters (34) and rendering ink (36) are independently legible.
    Type: Grant
    Filed: June 19, 2002
    Date of Patent: November 4, 2003
    Assignee: Motorola, Inc.
    Inventors: Gerald Thomas Panagrossi III, Steven Nowlan
  • Patent number: 6642921
    Abstract: In one embodiment of the invention, a hot spot is normally centered in an area of contact between a user's finger and a touch screen to position the hot spot on an icon or other feature thereby selecting a program or function corresponding to the icon or feature. When the contact area is near an edge, the hot spot is offset toward the edge so that it coincides more closely to the center of the users finger, thus allowing an icon or other feature adjacent the edge of the screen to be more easily selected. In another embodiment, a cursor is displayed on a touch screen at a location that is offset from the contact area between a finger and the screen. The cursor, which is used as the hot spot of the computer, is normally offset above the contact area except when the contact area is close to the bottom of the screen.
    Type: Grant
    Filed: May 20, 1999
    Date of Patent: November 4, 2003
    Assignee: Micron Technology, Inc.
    Inventor: Stephen C. Murphy
  • Patent number: 6633282
    Abstract: A wireless input device having an outward appearance resembling a standard ballpoint pen operates as both a standard ballpoint pen or similar writing instrument as well as an input device. The pen includes directional sensors for determining the direction and length of each pen stroke. A transmitter is provided in the pen barrel for transmitting the stroke signals directly to a computer for input and processing each stroke to provide an accurate representation of the pen stroke as it is being made. The transmitter may be a wireless device for transmitting a low frequency radio signal to a receiver associated with the computer. This permits the pen to be utilized anywhere within the transmitting range of the device, and in any orientation, with the computer picking up, processing and storing the signal representing the pen strokes.
    Type: Grant
    Filed: January 4, 1999
    Date of Patent: October 14, 2003
    Inventor: Adam A. Monroe
  • Patent number: 6630896
    Abstract: A system and method obfuscates a reference voltage being applied to a touch screen to reduce the likelihood that location coordinates may be obtained from electrically coupling to the touch screen. The method is performed by applying a varying reference voltage to a first plane of a touch screen with a time of application duration being substantially less than a touch period and by measuring a voltage present on a second plane during a portion of the application duration of the voltage to the first plane. A system may include a controller for randomly varying the reference voltage level and coupling a reference source that generates the reference voltage to a first plane of a touch screen for an application period that is significantly less than the touch period.
    Type: Grant
    Filed: May 16, 2000
    Date of Patent: October 7, 2003
    Assignee: NCR Corporation
    Inventor: Robert H. Nathan
  • Publication number: 20030047360
    Abstract: A position indicator contains a resonant circuit. A first resistor having a minimum resistance, a second resistor having a maximum resistance, and a variable resistor whose resistance varies within the range of minimum to maximum resistances are connected to the resonant circuit at first, second, and third specific times based on predetermined timing information supplied from a tablet. Signal levels detected by the tablet at the first and second specific times are used as a lower limit and an upper limit of an operation quantity. Within this range, a signal level detected at the third specific time is converted into an operation quantity. Thus, the continuous quantity can be detected at a fast sampling rate without being influenced by the height and tilt of the position indicator.
    Type: Application
    Filed: August 27, 2002
    Publication date: March 13, 2003
    Inventor: Yuji Katsurahira
  • Patent number: 6479768
    Abstract: Disclosed is a method and a device for obtaining precision data acquisition via hand writing/drawing without requiring the use of a transducer pad, the screen of a monitor, or a scanner. As such, writing/drawing can be applied to almost all kinds of material surfaces, including books, fabrics, labels, etc., with or without showing an ink mark. Graphic and text images can all be effectively processed. Data acquisition function is accomplished by continuously monitoring the orientation of a magnet ball installed at the tip of a magnetomechanical ball-pen device whose outlook resembles a regular pen. When powered by a battery with self data-storage capability, the disclosed method and device allow for a new class of instrumentations that data acquisition function is carried out at the same time whenever hand writing/drawing is applied in the normal manner.
    Type: Grant
    Filed: May 17, 2000
    Date of Patent: November 12, 2002
    Inventor: Hoton How
  • Patent number: 6473074
    Abstract: A coordinate data input device comprising a pair of detecting members, a spacer disposed between the detecting members, and a ground conductor element disposed between the detecting members. Each detecting member includes an insulating substrate, a resistance film provided on the insulating substrate and a conductor formed on the insulating substrate to be electrically connected with the resistance film. The detecting members are arranged in a face-to-face manner in that respective resistance films of the detecting members are opposed to each other. The spacer defines a gap between the respective resistance films, while permitting the resistance films to be shorted to each other when at least one of the detecting members is deformed. The ground conductor element substantially surrounds the resistance films and conductors of the detecting members.
    Type: Grant
    Filed: December 15, 1999
    Date of Patent: October 29, 2002
    Assignee: Fujitsu Takamisawa Component Limited
    Inventor: Masanori Okahashi
  • Patent number: 6441362
    Abstract: An optical digitizer is constructed for determining a position of a pointing object projecting a light and being disposed on a coordinate plane. In the optical digitizer, a detector is disposed on a periphery of the coordinate plane and has a view field covering the coordinate plane for receiving the light projected from the pointing object and for converting the received light into an electric signal. A processor is provided for processing the electric signal fed from the detector to compute coordinates representing the position of the pointing object. A collimator is disposed to limit the view field of the detector below a predetermined height relative to the coordinate plane such that through the limited view field the detector can receive only a parallel component of the light which is projected from the pointing object substantially in parallel to the coordinate plane.
    Type: Grant
    Filed: October 28, 1999
    Date of Patent: August 27, 2002
    Assignee: Kabushikikaisha Wacom
    Inventor: Yasuji Ogawa
  • Patent number: 6410865
    Abstract: A mechanism for ejecting stylus includes the locking apparatus and the ejecting apparatus. When the stylus is put in the slide groove, the movable arm of the locking apparatus exactly hooks the rabbet of the stylus resulting in the retention of stylus. The ejecting apparatus is used for ejecting the stylus along the slide groove. The locking apparatus and the ejecting apparatus are set separately at the end of the slide groove, and the distance between two apparatus is exactly equal to the length of the stylus.
    Type: Grant
    Filed: March 16, 2001
    Date of Patent: June 25, 2002
    Assignee: High Tech Computer Corp.
    Inventors: Ta-Wei Liu, Chien-Min Lin
  • Patent number: 6326565
    Abstract: A transmitter device is disclosed for use with a conventional pen in which the ultrasound transmitter is a cylindrical element lying coaxial with the pen and adjacent to its tip, and a jointed eraser structure. Conventional triangulation techniques are used to track the position and motion of a writer or eraser. An encoding facility associated with the pen provides the ability to distinguish whether the pen is used for marking or an as erasing implement, as well as determining the nature or character of written line width or eraser swath. A data stream thus generated can be used in a variety of ways, such as for example, to feed information into the memory of a digital computer, and/or to feed information for transmission to remote stations.
    Type: Grant
    Filed: February 28, 1997
    Date of Patent: December 4, 2001
    Assignee: Electronics for Imaging, Inc.
    Inventors: Rafi Holtzman, Isaac Zloter
  • Patent number: 6320570
    Abstract: A screen operator or artificial finger tip for entering commands and data into a personal data device, such as an electronic notebook, by contacting the screen of the personal data device. The screen operator comprises a partially rigid base that encircles the finger, generally conforming to the finger, and a rigid tip member which projects forwardly from the base to contact the screen. The extreme tip of the tip member is of reduced diameter at the point of contact with the screen. The base is tubular (preferably with a gap) and resiliently grips the finger. A hook member extends downwardly and back from the tip member to engage the underside of the user's finger tip. The hook member functions to retain the screen operator on the user's finger tip.
    Type: Grant
    Filed: December 18, 2000
    Date of Patent: November 20, 2001
    Assignee: True Tip, LLC
    Inventor: Karl Robb
  • Patent number: 6288711
    Abstract: Vibration is sensed as a signal by a vibration sensor and the signal level of the sensed signal is measured by an A/D converter. The distance between a position entered by a vibrating input pen and the vibration sensor is calculated and, on the basis of the calculated distance, input level information is obtained from the measured signal level by an arithmetic and control unit.
    Type: Grant
    Filed: February 25, 1999
    Date of Patent: September 11, 2001
    Assignee: Canon Kabushiki Kaisha
    Inventors: Atsushi Tanaka, Yuichiro Yoshimura, Ryozo Yanagisawa, Katsuyuki Kobayashi, Hajime Sato
  • Patent number: 6265676
    Abstract: A method and corresponding system for tracking variations in distance D calculated from time-of-flight measurements of a sequence of pulses of a pressure wave oscillation from a transmitter to a receiver identifies a state of synchronous operation by obtaining at least two time-of-flight measurements derived from successive pressure wave pulse which satisfy given synchronicity criteria. Successive time-of-flight measurements are then monitored to identify a shifted time-of-flight measurement which varies by at least half of the wave period from a predicted time-of-flight value calculated from a number of preceding time-of-flight measurements. A shift factor is then identified corresponding to an integer multiple of the wave period by which the shifted time-of-flight measurement must be corrected to obtain a corrected time-of-flight measurement falling within half of the wave period from the predicted time-of-flight value.
    Type: Grant
    Filed: September 10, 1998
    Date of Patent: July 24, 2001
    Assignee: Electronics for Imaging, Inc.
    Inventors: Zahi Zloter, Gideon Shenholz, Ron Serber
  • Patent number: 6252182
    Abstract: A digital pressure sensitive electromagnetic pen for writing and drawing on a touchpad is disclosed. The digital pressure sensitive pen comprising a pen core extending through a coil, a clamp casing, into a pen core support where the pen core is secured within a polygonal notch. The pressure sensitive pen further comprises a fixing casing inside which a conductible rubber, a coil circuit board, and an elastic element are placed. On the coil circuit board, spiral circuit arrangement is printed on the side facing toward the conductible rubber. The other side of the coil circuit board is connected to a processing board. When the pen is not used, there is no contact between the conductible rubber and the coil circuit board. When the pen of the present invention is used, there is writing force exerted on the pen core which moves the pen core support upwards and consequently pushes the conductible rubber against the coil circuit board and deforms the rubber.
    Type: Grant
    Filed: May 6, 1999
    Date of Patent: June 26, 2001
    Assignee: Aiptek International Inc.
    Inventor: I-Lun Lai
  • Patent number: 6252563
    Abstract: An object of the present invention is to make it possible to input coordinate information continuously among a plurality of input faces in inputting such coordinate information from the plurality of input faces by specifying coordinate positions. When a time measured between an end of a first input on the first input face and a start of a second input on the second input face is within a predetermined time, the first and second inputs are recognized as one continuous input even if the first input is stopped. Furthermore, when the end position of the first input is within a predetermined region, the first and second inputs are recognized as one continuous input even if the first input is stopped. Accordingly, it becomes possible to make a series of inputs by using the plurality of input faces.
    Type: Grant
    Filed: April 21, 1998
    Date of Patent: June 26, 2001
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Noburu Tada, Shuzo Kugimiya, Yoshihiro Wada
  • Patent number: 6204457
    Abstract: A digitizer pen includes a barrel section, a nose section removably attached to the barrel section, and an ink cartridge disposed in the barrel section and having a writing tip protruding from an end of the nose section, a cylindrical ferrite core disposed in the nose section, a first portion of the ferrite core being rigidly attached to the nose section. A coil surrounding a second portion of the ferrite core is attached to the barrel section. A writing tip end of the ink cartridge extends through the ferrite core. The first portion of the ferrite core is separable from the coil, so that when the nose section is removed from the barrel section the first portion of the ferrite core is separated from the coil, leaving the coil attached in fixed relation to the barrel section and also leaving exposed a portion of the ink cartridge initially covered by the first portion of the ferrite core, whereby a user can easily grasp the exposed portion of the ink cartridge and remove it without the aid of a tool.
    Type: Grant
    Filed: June 20, 1997
    Date of Patent: March 20, 2001
    Assignee: Fine Point Innovations, Inc.
    Inventors: Alexander B. Shekhel, Stephen R. Caldwell
  • Patent number: 6188392
    Abstract: A marking device is provided. The marking device (MD) includes an elongated housing that has a tip configured to contact a surface. The MD also includes a pressure sensor disposed within the housing. The pressure sensor is coupled to the tip and is configured to detect when the tip contacts the surface. The MD further includes first and second acceleration sensors disposed within the housing and adjacent the tip of the MD. The first and second acceleration sensors are configured to sense acceleration of the tip in first and second directions. Responsive to the sensing of acceleration, first and second acceleration sensors generate a signal indicative of acceleration in first and second directions. The MD also includes a conversion device configured to receive first and second signals and convert first and second signals into at least one computer readable signal.
    Type: Grant
    Filed: June 30, 1997
    Date of Patent: February 13, 2001
    Assignee: Intel Corporation
    Inventors: Michael O'Connor, David S. Vannier