"Rail travel at high speeds is not possible because passengers, unable to breathe, would die of asphyxia."
Dionysius Lardner, Professor of Natural Philosophy and Astronomy at University College, London ; 1830
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| Number | Title | Issue Date |
| RE41521 | Variable capacity condenser and pointer 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 fa... | 08/17/2010 |
| 7773076 | Electronic pen holding Motion of a writing instrument is tracked from sensors located in the vicinity. The signals generated from the sensors are processed and used in a wide variety of ways. ... | 08/10/2010 |
| 7760195 | Writing instrument that calculates grade A writing instrument for use by a grader comprises an elongate, tubular housing, a writing component secured within the housing and operative to make marks on a surface, and a calculation assembly comprised of electronic components. The calculation assembly is retai... | 07/20/2010 |
| 7750895 | Navigating lists using input motions A method of navigating items on a display on a computing device with a touch sensitive input device is disclosed. Similar to a bike wheel, the list of items will rotate in relation to the velocity of the input applied including speed up, slow down, stop and change d... | 07/06/2010 |
| 7728825 | Targeting in a stylus-based user interface Aspects of the invention provide virtual hover zones. When a user lowers a hovering stylus while remaining within a hover zone, cursor control is modified to be more easily controllable by the user. If the user pauses the stylus in mid-air before lowering the stylus... | 06/01/2010 |
| 7710408 | Centralized information management based upon position information A system for information management comprises a central unit and a plurality of user units which are arranged to record information and send the information to the central unit. Particulars are stored in the central unit about a plurality of regions, each of which r... | 05/04/2010 |
| 7705837 | System and method for alarming for misplaced computer tablet pen A computer tablet includes a wireless receiver, and a pen is configured to be manipulated by a person to ride against the computer tablet and thereby provide input to the computer tablet. The pen includes a wireless transmitter. A processor associated with the compu... | 04/27/2010 |
| 7701449 | Ink correction pad User interfaces for editing text in pen-based computing systems include: (a) a display portion that displays text; and (b) a correction interface that displays an editable text portion corresponding to at least a portion of the text. The correction interface accepts... | 04/20/2010 |
| 7696987 | Touch panel and method of manufacturing the same A touch panel includes an input registration structure comprising a biasable medium layer. A generally inflexible cover is disposed on the input registration structure and defines a touch surface. A pointer biases the biasable medium layer at a position adjacent the... | 04/13/2010 |
| 7692639 | Uniquely identifiable inking instruments A method of interacting with a computing device via one or more inking instruments to generate digital ink may include the steps of emitting light from a light emitting device to an inking instrument, receiving first user inputs from the inking instrument, and ident... | 04/06/2010 |
| 7683895 | Multi-purpose pen A multi-purpose pen includes a housing having upper and lower ends and defining upper and lower openings, respectively. A carriage is rotatably mounted in the housing and is adjustably positionable by a user. Multiple implements, such as an ink assembly and a stylus... | 03/23/2010 |
| 7671850 | Electronic pen An electronic pen has a body which comprises a casing consisting of at least two casing parts which are joined to be separable, and electronic equipment arranged inside the casing. A girdle is arranged with a close fit round the joined casing parts. The casing and t... | 03/02/2010 |
| 7659890 | Automatic height adjustment for electronic highlighter pens and mousing devices Methods and systems provide for automatic adjustment of electronic highlighter cursor height in response to a determined height of images or typed or handwritten text to be highlighted. The highlighter thickness or cursor height of an electronic highlighter, such as... | 02/09/2010 |
| 7659891 | Associating electronic documents, and apparatus, methods and software relating to such activities A method of associating a first electronic document with a second electronic document comprising having a first physical paper identifier (130) having pen-readable coding (12) which codes for an identifier for the first electronic document, and reading... | 02/09/2010 |
| 7656397 | Pointing device with integrated audio input and associated methods A mobile personal digital assistant (PDA) allows a user to enter information using both a touch screen and voice commands with a stylus. The stylus includes a microphone positioned at one end, and a transmitter for transmitting received voice signals to either a per... | 02/02/2010 |
| 7656395 | Methods and apparatuses for compound tracking systems A method, apparatus, and system for tracking movement of a device are described. The method includes steps of implementing a first tracking subsystem for tracking positions of a device against a surface, determining whether to implement a second tracking subsystem f... | 02/02/2010 |
| 7656396 | Calibrating digital pens A method of calibrating a digital pen (100) comprises the steps of: i) acquiring calibration data indicative of parameters indicative of an offset between a nib (108) of the pen (100) and a field of view (12... | 02/02/2010 |
| 7643016 | Coordinate input pen and coordinate input apparatus having the same The coordinate input pen according to the present invention is a coordinate input pen for specifying a current position of the coordinate input pen by emitting an ultrasonic wave, including: an ultrasonic wave oscillating section for oscillating the ultrasonic wave ... | 01/05/2010 |
| 7633493 | Camera-equipped writing tablet apparatus for digitizing form entries The embodiments of the invention provide an apparatus, method, etc. for a camera-equipped writing tablet for digitizing form entries. More specifically, a data capture apparatus comprises a form holder and an image capture device connected to the form holder. The im... | 12/15/2009 |
| 7626580 | Highlevel active pen matrix The present invention relates to a system, method and medium for receiving and acting upon user input. In one embodiment, the user may only have access to a limited input device, like a stylus. Using the present invention, a user is provided with intuitive responses... | 12/01/2009 |
| 7623121 | Flexible pen holder for a computer A computer system includes a holder attached to a housing of a pen-based computer. The holder may comprise a number of alternative materials, such as woven and non-woven sheet material. The holder may have a plurality of loop members configured for retaining a stylu... | 11/24/2009 |
| 7612767 | Trackpad pen for use with computer touchpad A pen or stylus for use with a finger activated computer touchpad uses capacitively coupled voltage signals to simulate the capacitive effect of a finger on the touchpad. In addition, the pen has buttons that can be utilized to capacitively couple control signals to... | 11/03/2009 |
| 7573467 | Graphic input device and method A Graphic Input Device comprises a pen-shaped pointing device moving about a writing surface and using ultrasonic (US) waves propagating in the air to measure displacement. Can be used in either a 2D or 3D mode. Uses displacement measuring means for two directions i... | 08/11/2009 |
| 7570253 | Pen-type computer A pen-type computer includes a pen barrel, a sensor, a primary processor, and a storage device. The pen barrel has a writing tip. The sensor is disposed in the pen barrel, sensing movement of the writing tip and generating a tracking signal corresponding to the move... | 08/04/2009 |
| 7567241 | Stylus with customizable appearance A stylus comprising: an elongate chassis molding; a nib at one end of the chassis molding; and, an elongate cover molding for close-fitting engagement with the chassis molding; such that, the cover molding is user replaceable. ... | 07/28/2009 |
| 7567242 | Writing stylus A stylus for an electrographic position location apparatus is disclosed. In one embodiment, the stylus includes a writing element that is retractable. The stylus may have a proximal end and a distal end. A conductive annular structure may be at the proximal end of t... | 07/28/2009 |
| 7532206 | System and method for differentiating between pointers used to contact touch surface A touch system comprises a touch surface and at least one camera acquiring images of the touch surface. A pointer contact data generator generates pointer position data in response to pointer contact with the touch surface, the pointer position data representing whe... | 05/12/2009 |
| 7528825 | Input pen and input device An input device includes an input pen that is capable of detecting an amount of a pen pressure applied to a pen tip. The input pen has a resistance film that alters a resistance vale thereof according to a touch area, a spring that alters the touch area between the ... | 05/05/2009 |
| 7522158 | Systems, methods, and media for determining the location of a stylus for a portable electronic device Methods for determining the location of a stylus for a portable electronic device are disclosed. One embodiment provides a method for determining at a first time that a stylus was not returned to a stylus receiver of the portable electronic device and determining la... | 04/21/2009 |
| 7522157 | Graphic input device A Graphic Input Device comprises a pen-shaped pointing device moving about a writing surface and using ultrasonic (US) waves propagating in the air to measure displacement. Can be used in either a 2D or 3D mode. Uses displacement measuring means for two directions i... | 04/21/2009 |
| 7518598 | Retraction mechanism of light pen Provided is a light pen comprising an elastic ejection assembly. In a retracting operation of the light pen, pressing a pushing rod into a barrel will move a pushing cylinder to compress a spring, push first teeth out of first grooves, clockwise turn the first teeth... | 04/14/2009 |
| 7511706 | Haptic stylus utilizing an electroactive polymer Haptic feedback interface devices using electroactive polymer (EAP) actuators to provide haptic sensations. A haptic feedback interface device is in communication with a host computer and includes a sensor device that detects the manipulation of the interface device... | 03/31/2009 |
| 7511705 | Position sensor A low cost x-y digitizing system is described for use in consumer electronic devices, such as portable digital assistants, mobile telephones, web browsers and the like. The digitizer includes a resonant stylus, an excitation winding for energizing the resonant stylu... | 03/31/2009 |
| 7508382 | Force-feedback stylus and applications to freeform ink This invention relates to a force-feedback apparatus which includes a stylus that is equipped with an electromagnetic device or a freely rotating ball. The stylus is functionally coupled to a controller which is capable of exerting a magnetic field to the electromag... | 03/24/2009 |
| 7508383 | Pen/stylus apparatus and method Embodiments of a pen/stylus apparatus are disclosed. In one embodiment, among others, a pen/stylus apparatus comprises a chamber configured to receive a pen, a holding element having a shaft, the holding element configured to retain the pen in a partially-ejected po... | 03/24/2009 |
| 7508384 | Writing system A Micro Inertial Measurement Unit (IMU) which is based on MEMS accelerometers and gyro sensors is developed for real-time recognition of human hand motions, especially as used in the context of writing on a surface. Motion is recorded by a rate gyro and an accellero... | 03/24/2009 |
| 7502018 | Projector, electronic whiteboard system using projector and method of acquiring indicated point An electronic whiteboard system has light emitting elements mounted on ultrasonic wave receivers of a signal processor, and an imager device for imaging the light emitting elements and a projection test pattern of a projector to acquire a positional relationship bet... | 03/10/2009 |
| 7489308 | Determining the location of the tip of an electronic stylus An electronic stylus system includes an electronic stylus and base receiving unit. The electronic stylus includes a first ultrasonic transmitter, a second ultrasonic transmitter, an electromagnetic transmitter, and a writing tip. The base receiver unit includes a fi... | 02/10/2009 |
| 7486282 | Size variant pressure eraser A method of adjusting the size of an area to be deleted in a pen-based computing system is provided. An electronic pen may include an eraser end. The eraser end may be used to contact the display surface of a computer system. Application of pressure to the display t... | 02/03/2009 |
| 7483017 | Ink collection and rendering A system and process for capturing and rendering ink is described. An ink canvas object may contain none, one, or more objects or elements and may specify the z-order of the objects or elements. The ink canvas object may host a variety of objects or elements and, th... | 01/27/2009 |