Abstract: An electronic pen cartridge includes a pen tip that is configured to protrude outside of an electronic pen electronic pen casing through an opening of the electronic pen casing, an electronic circuit that transfers signals to a position detecting sensor, and a first connector that is joined to a second connector disposed in the electronic pen casing. The first connector includes plural terminals insulated from each other, and each of the terminals is electrically connected to the electronic circuit. The first connector and the second connector are joined through insertion of a fitting protrusion of a first one of the first connector and the second connector into a fitting recess of a second one of the first connector and the second connector in an axis center direction of the electronic pen casing, and circular annular conductor contacts are included in the first connector or the second connector.

Abstract: A position detection apparatus includes a sensor, and a controller that detects a position of a first position indicator and a position of a second position indicator through the sensor. The controller continues detecting the position of the first position indicator and halts detecting the position of the second position indicator after a state in which the positions of the first position indicator and the second position indicator are not detected changes to a state in which the position of the first position indicator is detected, and continues both detecting the position of the second position indicator and detecting the position of the first position indicator after the state in which the positions of the first position indicator and the second position indicator are not detected changes to a state in which the position of the second position indicator is detected.

Abstract: An examination system includes a server apparatus, and a terminal apparatus connected to the server apparatus and capable of communicating with the server apparatus. The terminal apparatus is configured to transmit, to the server apparatus, response information, which is responsive to provided information and which is generated according to a position indication input performed by a user of the terminal apparatus. The terminal apparatus includes a position detection sensor that detects the position indication input, a determination unit that distinguishingly determines the position indication input in a response information area corresponding to an input field for the response information and the position indication input in an area outside the response information area, in a position detection area of the position detection sensor, and a transmission control unit that transmits, to the server apparatus, the position indication input in the response information area.

Abstract: A method is provided for adjusting the resonance frequency of a resonance circuit included in an electronic pen. The method uses adjusting means for adjusting the capacitance of an internal capacitor array and measuring means for measuring an alternating magnetic field generated by the resonance circuit. The method includes (1) a step of changing the state of a predetermined portion of multiple capacitive elements constituting the internal capacitor array, and (2) a step of changing, according to reference resonance frequency variations of the resonance circuit before and after the state change, the state of a portion or all of at least one capacitive element constituting the inner capacitor array other than said predetermined portion of the capacitive elements.

Abstract: A communication system includes a server apparatus, and a terminal apparatus connected to the server apparatus and capable of communicating with the server apparatus. The terminal apparatus is configured to transmit, to the server apparatus, response information, which is responsive to provided information and which is generated according to a position indication input performed by a user of the terminal apparatus. The terminal apparatus includes a position detection sensor that detects the position indication input, a determination unit that distinguishingly determines the position indication input in a response information area corresponding to an input field for the response information and the position indication input in an area outside the response information area, in a position detection area of the position detection sensor, and a transmission control unit that transmits, to the server apparatus, the position indication input in the response information area.

Abstract: Provided is a pen input device sheet disposed over a position detection region of a position detecting sensor, the pen input device sheet including an elastic material layer that is composed of a plurality of layer portions stacked in a thickness direction and has elasticity, an opposite side of a side of the position detecting sensor in the elastic material layer being employed as a side of a writing input surface to which writing input with an electronic pen is made, and the pen input device sheet being configured such that a vibration frequency characteristic of a kinetic friction coefficient when the electronic pen is moved at a predetermined speed on the writing input surface of the pen input device sheet matches a vibration frequency characteristic of a kinetic friction coefficient when a predetermined writing material is moved at the predetermined speed on a predetermined writing medium.

Abstract: An electronic pen cartridge includes a pen tip that is configured to protrude outside of an electronic pen electronic pen casing through an opening of the electronic pen casing, an electronic circuit that transfers signals to a position detecting sensor, and a first connector that is joined to a second connector disposed in the electronic pen casing. The first connector includes plural terminals insulated from each other, and each of the terminals is electrically connected to the electronic circuit. The first connector and the second connector are joined through insertion of a fitting protrusion of a first one of the first connector and the second connector into a fitting recess of a second one of the first connector and the second connector in an axis center direction of the electronic pen casing, and circular annular conductor contacts are included in the first connector or the second connector.

Abstract: A method is provided for adjusting the resonance frequency of a resonance circuit included in an electronic pen. The method uses adjusting means for adjusting the capacitance of an internal capacitor array and measuring means for measuring an alternating magnetic field generated by the resonance circuit. The method includes (1) a step of changing the state of a predetermined portion of multiple capacitive elements constituting the internal capacitor array, and (2) a step of changing, according to reference resonance frequency variations of the resonance circuit before and after the state change, the state of a portion or all of at least one capacitive element constituting the inner capacitor array other than said predetermined portion of the capacitive elements.

Abstract: An electronic pen cartridge includes a pen tip that is configured to protrude outside of an electronic pen electronic pen casing through an opening of the electronic pen casing, an electronic circuit that transfers signals to a position detecting sensor, and a first connector that is joined to a second connector disposed in the electronic pen casing. The first connector includes plural terminals insulated from each other, and each of the terminals is electrically connected to the electronic circuit. The first connector and the second connector are joined through insertion of a fitting protrusion of a first one of the first connector and the second connector into a fitting recess of a second one of the first connector and the second connector in an axis center direction of the electronic pen casing, and circular annular conductor contacts are included in the first connector or the second connector.

Abstract: Provided is a position indicator of an electromagnetic induction type including a position indicator cartridge housed in a hollow portion of a housing, in which the position indicator cartridge includes a first resonant circuit including a first coil wound around a magnetic core arranged on one end of the position indicator cartridge in an axial direction of the position indicator cartridge and a first capacitor, a second coil that is independent of the position indicator cartridge provided outside of the position indicator cartridge, at a position where the second coil, in operation, is magnetically coupled to the first coil of the position indicator cartridge, and a switch turned on and off by an operation portion provided outside of the position indicator cartridge, the operation portion, in operation, receiving an operation of a user, and a closed circuit including the second coil is formed when the switch is turned on.

Abstract: A knock-type electronic pen including a tubular casing, a first position indicator such as a written input indicator, a second position indicator such as an eraser, a knock cam mechanism, and a holding mechanism. The knock cam mechanism includes a knock portion including a part protruding outward from an opening at a second end of the tubular casing, and is configured to cause a tip of the first position indicator to protrude from, or be housed within, an opening at a first end of the tubular casing. The holding mechanism, in the state in which the tip of the first position indicator protrudes from the opening at the first end, returns the knock portion pushed into the tubular casing to a state of protruding from the opening at the second end such that at least a tip of the second position indicator protrudes outward.

Abstract: Provided is a position indicator of an electromagnetic induction type including a position indicator cartridge housed in a hollow portion of a housing, in which the position indicator cartridge includes a first resonant circuit including a first coil wound around a magnetic core arranged on one end of the position indicator cartridge in an axial direction of the position indicator cartridge and a first capacitor, a second coil that is independent of the position indicator cartridge provided outside of the position indicator cartridge, at a position where the second coil, in operation, is magnetically coupled to the first coil of the position indicator cartridge, and a switch turned on and off by an operation portion provided outside of the position indicator cartridge, the operation portion, in operation, receiving an operation of a user, and a closed circuit including the second coil is formed when the switch is turned on.

Abstract: A communication system includes a server apparatus, and a terminal apparatus connected to the server apparatus and capable of communicating with the server apparatus. The terminal apparatus is configured to transmit, to the server apparatus, response information, which is responsive to provided information and which is generated according to a position indication input performed by a user of the terminal apparatus. The terminal apparatus includes a position detection sensor that detects the position indication input, a determination unit that distinguishingly determines the position indication input in a response information area corresponding to an input field for the response information and the position indication input in an area outside the response information area, in a position detection area of the position detection sensor, and a transmission control unit that transmits, to the server apparatus, the position indication input in the response information area.

Abstract: A method is provided for adjusting the resonance frequency of a resonance circuit included in an electronic pen. The method uses adjusting means for adjusting the capacitance of an internal capacitor array and measuring means for measuring an alternating magnetic field generated by the resonance circuit. The method includes (1) a step of changing the state of a predetermined portion of multiple capacitive elements constituting the internal capacitor array, and (2) a step of changing, according to reference resonance frequency variations of the resonance circuit before and after the state change, the state of a portion or all of at least one capacitive element constituting the inner capacitor array other than said predetermined portion of the capacitive elements.

Abstract: The present disclosure is directed to a position detection sensor of an electromagnetic induction type connected to a position detection circuitry. The position detection sensor includes a circular substrate, a plurality of first loop coils arranged in a first direction on the circular substrate, and a plurality of second loop coils arranged in a second direction on the circular substrate, the second direction intersecting the first direction. Each of the plurality of first loop coils includes a straight portion extending in the second direction and a circumferential portion disposed along an outer edge of the circular substrate, and each of the plurality of second loop coils includes a straight portion extending in the first direction and a circumferential portion disposed along the outer edge of the circular substrate.

Abstract: A method is provided for adjusting the resonance frequency of a resonance circuit included in an electronic pen. The method uses adjusting means for adjusting the capacitance of an internal capacitor array and measuring means for measuring an alternating magnetic field generated by the resonance circuit. The method includes (1) a step of changing the state of a predetermined portion of multiple capacitive elements constituting the internal capacitor array, and (2) a step of changing, according to reference resonance frequency variations of the resonance circuit before and after the state change, the state of a portion or all of at least one capacitive element constituting the inner capacitor array other than said predetermined portion of the capacitive elements.

Abstract: An electronic pen cartridge includes a pen tip that is configured to protrude outside of an electronic pen electronic pen casing through an opening of the electronic pen casing, an electronic circuit that transfers signals to a position detecting sensor, and a first connector that is joined to a second connector disposed in the electronic pen casing. The first connector includes plural terminals insulated from each other, and each of the terminals is electrically connected to the electronic circuit. The first connector and the second connector are joined through insertion of a fitting protrusion of a first one of the first connector and the second connector into a fitting recess of a second one of the first connector and the second connector in an axis center direction of the electronic pen casing, and circular annular conductor contacts are included in the first connector or the second connector.

Abstract: The present disclosure is directed to a position detection sensor of an electromagnetic induction type connected to a position detection circuitry. The position detection sensor includes a circular substrate, a plurality of first loop coils arranged in a first direction on the circular substrate, and a plurality of second loop coils arranged in a second direction on the circular substrate, the second direction intersecting the first direction. Each of the plurality of first loop coils includes a straight portion extending in the second direction and a circumferential portion disposed along an outer edge of the circular substrate, and each of the plurality of second loop coils includes a straight portion extending in the first direction and a circumferential portion disposed along the outer edge of the circular substrate.

Abstract: Provided is an electronic pen core body including a tip component portion coupled to an axis component portion. At least one end of the axis component portion in an axial direction is made of a material that is harder than a material from which the tip component portion is made. The axis component portion includes a recessed hole and a fitting portion directly or indirectly fitted to a pen pressure detector. The tip component portion includes a tip portion protruding from the one end of the axis component portion in the axial direction, a coupling core portion disposed within the recessed hole and coupled to an inner wall surface of the recessed hole of the axis component portion, and a second ring-shaped end surface that contacts a first ring-shaped end surface of the axis component portion. The first ring-shaped end surface is covered by the second ring-shaped end surface.