Abstract: A mobile information terminal has: an operating position detecting part 37 that detects an operating position of a user on the basis of an output of an electrostatic capacitance sensor 30 that includes a thin film having a plurality of electrodes and detects an electrostatic capacitance of each of the electrodes; a direction input control part 31 that senses movement of the operating position on the basis of an output of the operating position detecting part, and generates a direction input signal; a key input part 32 that detects a pressing operation of the user on a pressing face of an operation key, and generates a key input signal; a display 22 having a display screen; and a display control part 34 that controls a display position of image information in the display screen on the basis of the direction input signal.

Abstract: An electronic device (200) comprises a touch screen (210), a pen-form stylus (170) for activating the touch screen (210), and a receptacle (220) located within or coupled to the electronic device (200) for storage of the pen-form stylus (170). The electronic device (200) comprises a flexible attachment mechanism (130) that is fixed to both the pen-form stylus (120) and the electronic device (230). The stylus (170) comprises a slot (150) such that the flexible attachment mechanism (130) is located within the slot (150). In this manner, an efficient geometry of the electronic device prevents the stylus being misplaced and enables the flexible attachment mechanism (130) to be located within the slot by the action of inserting the stylus (170) into the receptacle (220).

Abstract: An untethered stylus, configured to cooperate with a location sensor, includes a coil resonant circuit configured to develop an arbitrary AC voltage in response to a varying magnetic field produced by the location sensor. The coil resonant circuit includes a first capacitor and an inductive coil. A power converter includes a switch circuit having an output coupled to a second capacitor, an input coupled to the coil resonant circuit, and a threshold voltage. The switch circuit facilitates charging of the second capacitor in response to the arbitrary AC voltage and discontinuance of second capacitor charging in response to a voltage across the first capacitor reaching the threshold voltage so as to prevent diversion of a discharging current when the arbitrary AC voltage exceeds the threshold voltage. A stable DC voltage is provided at the output of the switch circuit. The power converter is preferably devoid of a Zener diode.

Abstract: A portable electronic device includes a main body, a stylus and a switch. The main body has a containing slot and the stylus is suitable for being inserted into the containing slot. The switch is disposed at a side of the containing slot and electrically connected to the main body. When the stylus is inserted into the containing slot, the switch is pressed by the stylus. When the stylus is taken out from the containing slot, the switch is released to enable the main body to execute a presetting function.

Abstract: The present disclosure relates to a method of manufacturing a stylus pen configured to select one of plural pieces of content installed in advance in a communication terminal. Examples of the method comprise preparing a protective cap of a conductive fiber material by sequentially stacking nickel, copper and nickel on both sides of a polyester fiber by deposition coating, placing the protective cap on a mold, applying a bonding agent to an internal surface of the protective cap, and injecting a non-conductive liquid onto the internal upper portion of the protective cap.

Abstract: The invention provides mechanical devices to enhance the input process for touch screen devices. Fader tracks with or without fader caps, rotary and fixed knobs, and joysticks may be removably adhered to a touch screen and used to emulate their respective functions, using software interpretation of the touch detections provoked by the devices to carry out the emulations. The devices are inexpensive and simple, and the touch screen and associated software provide the function and feel of electromechanical controllers that are far more expensive and difficult to connect and maintain. The devices may be provided as components on a crack-and-peel sheet. For fixed knobs, the software application accepts initial inputs and determines the location on the touch screen, and also interprets the geometry of the input strokes as commands for selected controller emulations, such as joystick, fader, knob, or mouse.

Abstract: An electronic apparatus including a main body and a stylus is provided. The main body includes a containing trench having a bulge and a reset button. The stylus includes a stylus body, a stylus front end and a stylus rear end. A surrounding trench structure of the stylus body has a first end and a second end connected to a first stylus body and a second stylus of the stylus body respectively, wherein the cross section area of the first end is smaller than the same of the second end. The stylus front end passes into the containing trench to perform a first displacement to a first position, and then to perform a second displacement to a second position by pressing the stylus rear end to make the surrounding trench structure slide over the bulge such that the stylus tip touches the reset button to reset the electronic apparatus.

Abstract: The detection of touch on an optical touch-sensitive device is disclosed. For example, one disclosed embodiment comprises a touch-sensitive device including a display screen, a laser, and a scanning mirror configured to scan light from the laser across the screen. The touch-sensitive device also includes a position-sensitive device and optics configured to form an image of at least a portion of the screen on the position-sensitive device. A location of an object relative to the screen may be determined by detecting a location on the position-sensitive device of laser light reflected by the object.

Abstract: Touch sensor methods, devices and systems are disclosed. One embodiment of the present invention pertains to a method comprising monitoring a finger movement along a touch sensing surface based on position data of a finger touching the touch sensing surface, where the position data is obtained by locating a position of a force applied by the finger in a coordinate of the touch sensing surface. In addition, the method comprises generating direction data associated with the finger movement if the finger movement travels for more than a threshold distance. Furthermore, the method comprises determining a finger gesture which corresponds to the finger movement using a lookup table having multiple preconfigured finger gestures based on the direction data.

Abstract: An apparatus and method for distinguishing a particular gesture from among multiple gestures, performed by a conductive object on the sensing device, using fewer than three time intervals. The apparatus may include a sensing device to detect a presence of a conductive object, and a processing device, coupled to the sensing device, to distinguish the multiple gestures. The method may include distinguishing between a tap gesture, a double tap gesture, a drag gesture, and a motion gesture.

Abstract: A conductive brush, or stylus, for use with touch screen computing devices. The bristles or filaments are attached to an electrically conductive ferrule, so that even when the brush is pressed against the tablet to make the bristles splay apart, the conductive ferrule itself maintains electrical communication with the tablet. The brush thus allows users to conduct paint operations in an uninterrupted manner, even when its bristles spread apart. Further, this ferrule can be made removable so that users can swap out different brush heads quickly and easily. Additionally, the ferrule has at least a portion that is flexible, deforming visibly upon application of pressures commonly achieved during a typical painting operation. This deformation at least partially absorbs stresses on the filaments, preventing them from splaying apart excessively during painting, and thus helping to prevent loss of detection by the tablet and/or undesired visual effects.

Abstract: A method for using a touch display system comprises defining local distortion zones within regions of a touchscreen. Each of the local distortion zones has an associated calibration touch point and a target. Coordinates of a user touch point are distorted within a first local distortion zone based on a location of the user touch point within the first local distortion zone.

Abstract: A portable electronic device includes a touch pen comprising a main body, a first pen head, a first elastic member, and a first sleeve. The first elastic member interconnects the main body and the first pen head. The first sleeve is slidably sleeved on the main body or the first elastic member so as to expose at least a part of the first elastic member. The first elastic member is bendable.

Abstract: An untethered stylus is configured to cooperate with a location sensing device that generates a drive signal. The stylus includes transceiver circuitry disposed in a housing, which is configured to receive the drive signal and transmit a stylus signal for reception by the location sensor. Energy circuitry is disposed in the housing and energized by the drive signal. A reference frequency generator, disposed in the housing and coupled to the transceiver circuitry and energy circuitry, is configured to generate a number of reference frequencies based on a source frequency of the drive signal, the reference frequencies indicative of a number of stylus states and synchronized to the source frequency of the drive signal. The transceiver circuitry is configured to mix the reference frequencies with the stylus signal.

Abstract: An excitation coil (19) surrounding the periphery of the position detecting area is connected to an oscillating circuit (21), which oscillates at a frequency f0, through a drive circuit (20). A CPU (18) supplies control signals to a selecting circuit (12), a sample-and-hold circuit (16), an A/D conversion circuit (17), and the drive circuit (20). Based on the control signal output from the CPU (18), the drive circuit (20) controls the power of the signal output from the excitation coil (19) to ON or OFF. Further, the strength of the excitation signal supplied from the excitation coil (19) is controlled based on information obtained by analyzing a signal received from a position indicator (40), such as the position indicated by the position indicator on the position detecting area and/or a strength of the signal received from the position indicator.

Abstract: An input/output integrated display apparatus according to an embodiment of the present invention includes a capture device for capturing an image of a user, an information register device for relating users' image information to pen settings information for each scheduled user and registers it, a user identification device for comparing image information of a user captured by the capture device with the users' image information and identifying a user in real time, and a display device for displaying text and lines entered by the user in a display format based on the pen settings information of the user identified by the user identification device on a display screen in real time. With this configuration, a user can be automatically identified, and text and lines are displayed based on the pen settings information of the user.

Abstract: An electromagnetic pen, an electromagnetic signal transmission method and an electromagnetic signal processing method, a processing device and a processing apparatus comprises: a reference inductance and a reference capacitor, connected with each other in parallel in a housing of the electromagnetic pen and configured to transmit an electromagnetic signal in a handwritten frequency; a control capacitor, connected with the reference capacitor in parallel and controlled by a control switch connected in series so as to transmit an electromagnetic signal in a control frequency. The processing device comprises: a receiving identification module, configured to receive the electromagnetic signal transmitted by the electromagnetic pen and identify a frequency of the electromagnetic signal; a handwritten input module, configured to input a handwritten symbol when the identified frequency is within a range of the handwritten frequency; and a control input module, configured to input a control signal.

Abstract: An untethered stylus is configured to cooperate with a location sensor that generates a magnetic field. The stylus include a housing having a tip and a shield. Circuitry, including a power circuit, is provided in the housing. An antenna arrangement provided at the housing includes multiple coil resonant circuits each tuned to a different frequency of the magnetic field. A first coil resonant circuit energizes the power circuit in response to the magnetic field, which provides DC power to the circuitry. One or more other coil resonant circuits are coupled between the tip and shield of the housing to define separate channels for communicatively coupling the stylus tip and the location sensor. An information signal communicated between the stylus tip and the location sensor is substantially unperturbed during provision of DC power by the first coil resonant circuit.

Abstract: The present disclosure relates to a stylus and a method of manufacturing the same. The stylus is configured to select one of plural pieces of content installed in advance in a communication terminal and indicate an associated operation of the selected piece of content to be performed by touching the selected piece of content with the stylus.

Abstract: A smart surface is disclosed that can stand alone or be contained within a portable computer or other system, for powering and communicating with single or multiple cord-free transducers. Operating or charging power is transmitted by the surface using a carrier signal that is on/off keyed or amplitude modulated with synchronization, clock, enable, address, modes, commands and other pulse width, encoded or digital data. The signal is transmitted to single or multiple cordless smart transducers located on or above the surface, such as pens with multiple pressure sensing and switch capability, pointers, stylus, cursors, pucks, mouse, pawns, implements and similar items. Overlapping resonant inductive circuits are used in the surface to transmit operating power and communicate data to the transducer(s).

Abstract: A sensing device is provided for sensing data encoded on a surface. The device has a region identity sensor and a transmitter. The region identity sensor senses region identity data of the coded data when the sensing device is positioned or moved relative to a region of the surface. The region identity data is indicative of an identity of the region. The transmitter transmits the sensed region identity data to a computer system.

Abstract: A position input device is provided in which signals are transmitted from a position indicator, and signals transmitted from the position indicator are received by a position detector device. According to certain embodiments, an electrical double-layer capacitor, a charging circuit which charges the electrical double-layer capacitor, and a power transmission unit which relays and supplies to the charging circuit power supplied from a power supply unit external to the position indicator, are provided in the position indicator. In other embodiments the position input device has a built-in power supply unit, transmitting units, and a control unit for switching the transmitting units between energized and de-energized states. Also provided are position input systems and computer systems including the position input device, and methods of operating the position input device and the systems.

Abstract: An untethered stylus is configured to cooperate with a location sensing device that generates a drive signal. The stylus includes transceiver circuitry disposed in a housing, which is configured to receive the drive signal and transmit a stylus signal for reception by the location sensor. Energy circuitry is disposed in the housing and energized by the drive signal. A reference frequency generator, disposed in the housing and coupled to the transceiver circuitry and energy circuitry, is configured to generate a number of reference frequencies based on a source frequency of the drive signal, the reference frequencies indicative of a number of stylus states and synchronized to the source frequency of the drive signal. The transceiver circuitry is configured to mix the reference frequencies with the stylus signal.

Abstract: When a start pulse is supplied, a time-constant circuit (1) is charged to a voltage Vcc, and charge in a variable capacitor (C) is discharged through a resistor (R1). Upon the voltage (a) of the variable capacitor (C) reaching a preset reference voltage V1, a signal (b) is output from a comparator (2). In response to the signal (b), a time measuring circuit (3) stores a measured time period as a time period “T1”, and at the same time a switching signal (c) is output. The switching signal (c) switches the reference voltage V1 to a reference voltage V2, which is slightly lower than the reference voltage V1, and further switches the resistor R1 to a resistor R2, which has higher resistance than the resistor R1. Upon the voltage (a) of the variable capacitor (C) reaching the reference voltage V2, the signal (b) is output from the comparator 2. In response to the signal (b), the time measuring circuit (3) stores a measured time period as a time period “T2”.

Abstract: Systems and methods provide for adaptive drive signal adjustment to improve reception of a stylus signal at a location sensor. A location sensing system includes an untethered stylus comprising circuitry configured to receive a drive signal and transmit a stylus signal. The circuitry is configured to be energized by the received drive signal and includes frequency-sensitive circuitry. A location sensor includes a controller and a sensing array. The location sensor is configured to generate the drive signal and receive the stylus signal. The controller is configured to adjust a parameter of the drive signal that improves receptivity of the stylus signal by the location sensor.

Abstract: A stylus retaining mechanism for portable electronic device includes a housing and a locking assembly. The housing includes a fixing portion, an opening and a receiving chamber communicating with the opening. The receiving chamber is configured to receive a stylus, the housing included. The locking assembly is attached to the fixing portion, and includes a button and an elastic member. The button defines a passage to allow the stylus to extend through and slide along a landscape orientation of the stylus. A protrusion is formed in the passage. The stylus is locked in the stylus retaining mechanism by engagement between the latching portion and the protrusion. The latching portion is disengaged from the protrusion when the button is depressed.

Abstract: A handwriting input device with electromagnetic power transmitting is disclosed herein and includes a micro-controller, a power transferring coil, an electromagnetic pen and a filter. The micro-controller is configured to control for the first signal producing and the power transferring coil is configured to transfer the electromagnetic power of the first signal. The electromagnetic pen is configured to receive the electromagnetic power of the first signal and transform the electromagnetic power to be the second signal to transmit. The antenna loops are configured to receive the second signal and the filter is configured to filter the noise of the second signal.

Abstract: A retention member holds a tip of a pen received in an inner space of a unit body through an opening. A narrowed path member is placed within the inner space at a position between a large-diameter member of the pen and the opening, when the retention member holds the pen. The large-diameter member expands outward from the outer peripheral surface of the pen by a predetermined amount. The narrowed path member contacts the large-diameter member when the pen is released from the retention member, and creates enough interference to prevent the pen from falling out of the unit body, but otherwise allows the pen to be drawn out of the opening.

Abstract: The present invention is related to a computer-implemented method of identifying and annotating an image from an electronic medical record displayed on a touch screen, which includes displaying the image on the touch screen; identifying medical issues shown in the image; annotating the image with at least one symbol correlated to predetermined information using a navigational device; and prioritizing the medical issues using the navigational device. The prioritizing step may include color-coding at least one of the symbol and the image using the navigational device. Further, the navigational device may include a pressure detecting mechanism which determines at least one of a priority of the image and a speed of images displayed on the touch screen, based on an amount of pressure exerted by a user on the touch screen. The navigational device includes security features to ensure authorized use, including biometric authentication of identification.

Abstract: A digital pen of the kind having means to sense and create a digital record of the use made of the pen and a memory in which the digitised record is stored also includes a reader for communication with memory tags by inductive coupling. The means to sense and create a digital record of the use made of the pen may include a camera. Preferably the reader for communication with memory tags is located at the opposite end of the pen from a nib for convention writing, and the pen includes a battery power supply.

Abstract: The present invention relates to a multi-function electromagnetic pen, and particularly relates to an electromagnetic pen with a multi-function tail part. This electromagnetic comprises a body, a pen-tip part, and a multi-function electromagnetic ring. The pen-tip part is disposed on the front part of the electromagnetic pen and the multi-function electromagnetic ring is disposed on the tail part (or rear end part) of the electromagnetic pen. The multi-function electromagnetic ring can emit different electromagnetic signals with different frequencies. These electromagnetic signals with different frequencies are defined by a tablet to represent different functions (or modes), for example erasing function (or mode), magnifying function (or mode), and palette knife function (or mode). A user can control and change the frequency of the electromagnetic signal emitted form the multi-function electromagnetic ring by pressing the switch on the body of the electromagnetic pen.

Abstract: A stylus includes a housing, a stylus body and a first rotating member. The stylus body includes a tip. The first rotating member is coupled between the housing and the stylus body so the stylus body rotatably engages with the housing. The tip moves from one side of the first rotating member to another side of the first rotating member, when the stylus body rotates relative to the housing.

Abstract: A position indicator is provided. The position indicator includes an external case, and a core having an indicating unit projecting outside of the case. The core is movably supported by the case. The core has a central axis extending along a lengthwise direction thereof. A guiding unit includes an inclined plane provided on one of the case and the core. An engaging unit is provided on the other one of the case and the core. The engaging unit is slidably engaged with the inclined plane such that the guiding unit guides movement of the core when external force is applied to the indicating unit of the core in a lateral direction with respect to the central axis of the core. A pressure detector is operably associated with the core for detecting pressure applied to the indicating unit based on the movement of the core with respect to the case via the guiding unit.

Abstract: A stylus comprises a housing, an axle, a follower, a connecting rod, a stylus body and a pin. The housing has a receptacle and a guiding groove. The axle is rotatably mounted in the receptacle and a threaded portion formed thereon. The follower includes a main body, a nut screwed on the threaded portion and a guiding block slidably located in the guiding groove. The connecting rod is accommodated in the receptacle, the connecting rod defines a sliding groove. The stylus body has a body, a head and an pin hole aligned with the sliding groove. The pin is located in the housing. The pin is inserted in the pin hole and the sliding groove so the connecting rod and a second body end are hinged in the housing; a first connecting rod end is hinged near the center of the stylus body, the second connecting rod end is hinged to another side of the follower opposite to the nut.

Abstract: An untethered device, configured to inductively couple to a source device, includes a tunable resonant circuit having a resonance frequency and configured to generate a supply voltage for the untethered device in response to a varying magnetic field produced by the source device. The tunable resonant circuit includes an inductive coil comprising a center tap and a capacitive circuit coupled to the inductive coil. The capacitive circuit includes an anti-series arrangement of varactor diodes that behave as a capacitance when placed in reverse bias. A frequency control circuit is coupled to the tunable resonant circuit and includes a control voltage source coupled to the center tap of the inductive coil. The control voltage source produces a control signal to place the varactor diodes in reverse bias and to change the capacitance of the capacitive circuit, thereby effecting a change in the resonance frequency of the tunable resonant circuit.

Abstract: An untethered stylus is configured to cooperate with a location sensing device that generates a drive signal. The stylus includes transceiver circuitry disposed in a housing, which is configured to receive the drive signal and transmit a stylus signal for reception by the location sensor. Energy circuitry is disposed in the housing and energized by the drive signal. A reference frequency generator, disposed in the housing and coupled to the transceiver circuitry and energy circuitry, is configured to generate a number of reference frequencies based on a source frequency of the drive signal, the reference frequencies indicative of a number of stylus states and synchronized to the source frequency of the drive signal. The transceiver circuitry is configured to mix the reference frequencies with the stylus signal.

Abstract: A stylus comprises a housing, a stylus body, a pin, a shell and a latching element. The housing has a receptacle defined therethrough. The stylus body is accommodated in the receptacle. The pin transversely passes through the stylus body and the housing to retain the stylus body to the housing. The shell is slidably accommodated in the receptacle, the shell has a first stopping hole defined at one end thereof and a protrusion located adjacent to the first stopping hole, the first stopping hole is used for latch with the pin to hold stylus in a retracted state. The latching element is mounted in the receptacle and spaced apart from the stylus body, the latching element having a latching cantilever having a second stopping hole defined therethrough, the second stopping hole being used for latching with the protrusion to hold the stylus in an extended state.

Abstract: A cap assembly for protecting a head of a stylus, the cap assembly comprise a hollow cap and a resisting element. The cap has chamber defined therein. The resisting element is mounted in the chamber, the resisting element includes a resisting portion that has a receiving space defined therein. The receiving space has a shape and profile conforming to the head; so when the head is received in the receiving space, the head resisting an inner surface of the receiving space.

Abstract: A sensing device for sensing coded data on a surface is provided having marking and non-marking nibs for contact with the surface, a selection mechanism for moving the nibs relative to each other to select which nib contacts the surface, an image sensor for sensing the coded data, memory for storing respective identities of the nibs, and a processor for identifying the selected nib from the stored nib identities and processing the sensed coded data. The coded data is encoded in coded tags printed across the surface and indicates the position of that tag on the surface and an identity of the surface which is associated with a digital description of the surface maintained by a processing device. The processor determines an orientation and a position of the sensing device relative to the surface from the sensed coded data and the digital description.

Abstract: A smart surface is disclosed that can stand alone or be contained within a portable computer or other system, for powering and communicating with single or multiple cord-free transducers. Operating or charging power is transmitted by the surface using a carrier signal that is on/off keyed or amplitude modulated with synchronization, clock, enable, address, modes, commands and other pulse width, encoded or digital data. The signal is transmitted to single or multiple cordless smart transducers located on or above the surface, such as pens with multiple pressure sensing and switch capability, pointers, stylus, cursors, pucks, mouse, pawns, implements and similar items. Overlapping resonant inductive circuits are used in the surface to transmit operating power and communicate data to the transducer(s).

Abstract: A telescoping stylus includes a housing, a nib portion, a stopper member, a first sleeve, a shank member and a second sleeve. The nib portion is attached to one end of the housing. The stopper member is attached to another end of the housing. The shank member is slidably received in the first sleeve. The second sleeve receives the first sleeve and the shank member, and the shank member is fixed to the second sleeve. The second sleeve is releasably positioned in the housing, and abuts the stopper member.

Abstract: A refined coordinate detection method for a touch panel, which more finely measures coordinates of an object without increasing the number of infrared emitting/receiving elements, and an error correction method, which minimizes position detection errors caused by received optical level errors due to external environment or their inherent characteristics, are provided. In the detection method, received levels of infrared emitting/receiving elements corresponding to left and right ends of object are measured and stored and the levels and a maximum received level are compared to calculate the refined coordinates. In the correction method, a lower limit level at a position where infrared reception is most significantly impeded by object is calculated through a comparison calculation of maximum and minimum received levels and it is detected that an object is present at a position only when a lower limit level at that position is not greater than the calculated one.

Abstract: A stylus comprises a housing, a stylus body and a sliding enabling member. The slide enabling member slideably coupling the stylus body to the housing so the stylus body can slide relative to the housing from a retracted configuration to an extending configuration. The slide enabling member includes a sliding pin and two tracks engaging the sliding pin, the sliding pin is positioned on a sliding element located in the receptacle of the housing, and the tracks are two guiding grooves defined in a guiding element located in the chamber of the stylus body, the sliding pin slides in the tracks when the stylus body slides relative to the housing between the retracted configuration and the extended configuration.

Abstract: A stylus comprises a housing, a stylus body and a retaining structure. The housing has a receptacle defined therethrough. The retaining structure is configured to provide a mechanism for the stylus body to latch in the receptacle of the housing. The retaining structure includes a set of retaining members and a set of retaining slots that engage the retaining members.

Abstract: A pen includes a first speaker that outputs a first signal and a second speaker that outputs a second signal. The first and second speakers are located away from a tip of the pen at respectively different locations. The second signal is delayed with respect to the first signal by a time shorter than a cycle of the first signal. An interpolation time is set between the times of generation of the first and second signals. Interpolated positions of the first and second speakers at the interpolation time are estimated, and position of the tip of the pen is calculated from the interpolated positions of the first and second speakers.

Abstract: A stylus comprises a housing, a tip body, a slide enabling member and a cap assembly. The housing has a receptacle defined therethrough. The tip body is slidably accommodated in the receptacle of the housing. The slide enabling member slidably couples the tip body to the housing so the tip body can slide relative to the housing from a retracted position to an extended position. The cap assembly is releasably latched to the tip body. The tip body includes a tapered surface formed thereon; the cap assembly includes a resisting portion which is complemented in shape and size to resist the tapered surface of the tip body; when an external force is exerted on the cap assembly toward the housing, the resisting portion push the tapered surface so the tip body slides relative to the housing from the extended position to the retracted position.

Abstract: A stylus comprises a shell, a stylus body, and a slide enabling member. The shell has a chamber defined therethrough. The stylus body is slidably accommodated in the chamber of the shell. The slide enabling member is slidably coupling the stylus body to the shell so the stylus body can slide relative to the shell from a retracted position to an extended position. The slide enabling member includes a sliding pin located at one of the stylus body and the shell, and a track defined at another one of the stylus body and the shell and slidably engaging with the sliding pin so the stylus body slides relative to the shell.

Abstract: A stylus comprises a first shell, a second shell, a first slide enabling member. The first shell has a first hole defined therethough. The second shell is slidably accommodated in the first hole of the first shell. The first slide enabling member couples the second shell to the first shell such that the second shell slides relative to the first shell from a retracted configuration to an extending configuration. The first slide enabling member includes a first pin and a first track that engages the first pin, the second shell slides relative to the first shell along the first pin.

Abstract: An information display system includes a position indicating apparatus that indicates a position and an information display apparatus that displays information and is connected to the position indicating apparatus so as to communicate with the position indicating apparatus. The position indicating apparatus includes: a detecting unit that detects an indicated position; a first storage unit that stores the detected position; and a transmitting unit that transmits positional information indicating the stored position. The information display apparatus includes: a display unit that displays content; a receiving unit that receives the transmitted positional information; an associating unit that associates the positional information with the content; and a second storage unit that stores the positional information and the content associated with each other.

Abstract: A portable computer arranged to rest comfortably in the hand has a small display screen. Accelerometers capable of detecting movement of the pen with respect to gravity provide input to a microcontroller which selects a response from a number of viewing modes. The pen may be held in either hand and the output message to the screen will be oriented according to the location of the pen. Full personal digital assistance functionality may be incorporated in a relatively small plastics casing and functions, such as calendar, contracts the like may be incorporated.