Fujitsu Corporation

Kiyoshi Taninaka

Yuichi Kamata

Yasuhiro Endo

Akinori Miyamoto

Akihiko Yabuki

Tetsuya Takei

Junji Wakihara

Jun Sasaki

Hiroyuki Kawai

Morihisa Kawahara

Nobuo Kuwabara

Sachihiro Youoku

Yoshiya Matsumoto

Tohru Harada

Minoru Takano

Yoshiki Nagasaki

Michio Shimura

Kunihiro Kitsu

Nobuyuki Tanaka

Shigeo Nonoyama

Koji Yoshimoto

A control device that controls an electronic device including a top panel having an operation surface, a position detector that detects a position of operational input performed on the operation surface, and a first vibrating element that generates vibration in the top panel, the control device includes a first processor that outputs a first drive signal to the first vibrating element to drive the first vibrating element; a first capacitor inserted in series between the first vibrating element and the first processor; and a first differential amplifier that detects a first voltage of the first capacitor or the first vibrating element, wherein the first processor is configured to determine whether pressing operation to the top panel has been performed based on the first voltage detected by the first differential amplifier.

Control circuitry, electronic device, and method for controlling electronic device

An electronic device includes: a top panel with an operation surface; a coordinate detector that detects coordinates of operational input performed on the operation surface; a vibrating element that generates vibration on the operation surface; a drive controller that drives the vibrating element with a drive signal that generates natural vibration in an ultrasonic band on the operation surface, the drive controller driving the vibrating element so that intensity of the natural vibration changes depending on a position of the operational input on the operation surface and a degree of temporal change in the position; and a reflector disposed on the operation surface side of the top panel and having a reflective surface that reflects ultrasonic waves radiated from the top panel.

Electronic device

A drive control device being configured to provide a signal to an electronic device, the electronic device including a top panel having an operation surface, and a position detection circuit configured to detect a position of an operational input performed on the operation surface, and a vibrating element configured to generate vibration in the operation surface, the drive control device comprising: processor circuitry configured to execute a drive control processing that includes driving the vibrating element of the electronic device with a drive signal, the drive signal being configured to cause the vibrating element to generate natural vibration in the operation surface and being obtained by modulating a waveform signal of a first frequency in an ultrasonic band with a modulation signal of a second frequency having a difference from the first frequency, the difference being able to be sensed by a tactile receptor of a human.

Drive control device, electronic device, and drive control method

An electronic device includes a top panel configured to have an operation surface; a detection circuit configured to detect a position of an operation input on the operation surface; a vibrating circuit configured to be attached to the top panel to generate vibration on the operation surface; a control circuit configured to drive the vibrating circuit by a driving signal for generating natural vibration of an ultrasonic wave band on the operation surface, in which the driving of the vibrating circuit is performed such that an intensity of the natural vibration changes in accordance with the position of the operation input to the operation surface and a temporal change degree of the position; and a damping member configured to abut against a position that corresponds to a node of a standing wave generated by the natural vibration on a surface opposite to the operation surface of the top panel.

A drive controller includes a pulse generator configured to generate a pulse width modulation signal by modifying a period of at least one cycle of a plurality of cycles of the pulse width modulation signal for synchronizing the plurality of cycles of the pulse width modulation signal with one cycle of a drive signal, and a drive circuit configured to generate the drive signal based on the pulse width modulation signal generated by the pulse generator, and drive a vibration element coupled to a panel of an electronic device on a basis of the generated drive signal for generating vibration in an ultrasonic band on the panel.

Drive controller, electronic device, and drive control method

An electronic device includes: a top panel having a manipulation surface; a position detector configured to detect a position of a manipulation input performed on the manipulation surface; a vibrating element; and a drive controlling part configured to drive the vibrating element for generating a natural vibration in an ultrasound frequency band at the manipulation surface such that an intensity of the natural vibration is changed in accordance with the position of the manipulation input performed on the manipulation surface and a time change degree of the position, wherein a width of the vibrating element in a direction in which an amplitude of the natural vibration changes is set based on a ratio between a flexural rigidity of the top panel and a flexural rigidity of the top panel and the vibrating element at a portion where the vibrating element is attached to the top panel.

A game controller includes a housing; a top panel disposed on an opening portion of the housing and having a manipulation input surface; a position detector configured to detect a position of a manipulation input performed on the manipulation input surface; a vibrating element configured to generate a vibration in the manipulation input surface of the top panel; and a drive controlling part configured to drive the vibrating element by using a driving signal causing the vibrating element to generate a natural vibration in an ultrasound-frequency-band in the manipulation input surface.

Game controller

An electronic device can provide a satisfactory tactile sensation by Fourier-transforming a first image including brightness information, to obtain a first spatial-frequency distribution of the brightness, obtaining a second spatial-frequency distribution by multiplying the first spatial-frequency distribution by a coefficient depending on the first image size, obtaining a first time-frequency distribution based on the second spatial-frequency distribution and an input operation speed, filtering the first time-frequency distribution through a filter in which the transmittance for a frequency band detectable by Pacini's corpuscles is reduced, to obtain a second time-frequency distribution, converting the second time-frequency distribution into a third spatial-frequency distribution, based on the coefficient and the predetermined speed, inverse-Fourier-transforming the third spatial-frequency distribution, to obtain a second image, and driving a vibration element by a drive signal that has an amplitude according to brightness of the second image at the input position.

Electronic device and drive control method thereof

An electronic device includes a top panel having a manipulation surface; a coordinate detector configured to detect coordinates of a manipulation input performed on the manipulation surface; a first vibrating element; and a drive controlling part configured to drive the first vibrating element by using a driving signal for generating a natural vibration in an ultrasound frequency band of the manipulation surface, the drive controlling part being configured to drive the vibrating element such that an intensity of the natural vibration changes in accordance with a position of the manipulation input and in accordance with a degree of time change of the position, wherein the top panel has a periodic structure whose thickness changes in a periodic manner in accordance with a period of a standing wave in a direction in which antinodes and nodes of the standing wave generated by the natural vibration are arrayed.

A drive control apparatus that drives a vibrating element of an electronic device including a touch panel and the vibrating element generating a vibration in a manipulation input surface of the touch panel, including, a drive controller being configured to drive the vibrating element by using a drive signal causing the vibrating element to generate a natural vibration in an ultrasound-frequency-band in the manipulation input surface, the drive controller being configured to drive the vibrating element so as to switch the natural vibration between a strong level and a weak level in accordance with a travel distance of a position of a manipulation input performed onto the manipulation input surface.

Drive control apparatus, electronic device and drive controlling method

An electronic device includes a display part; a top panel having a manipulation input surface; first vibrating elements configured to vibrate the manipulation input surface; second vibrating elements configured to vibrate the manipulation input surface; a memory configured to store section area data, in which coordinate points of section areas and identifiers of the first vibrating elements and the second vibrating elements are associated, the manipulation input surface being sectioned into the section areas; and a drive controlling part configured to drive at least one of the first vibrating elements and the second vibrating elements based on a position of a manipulation input performed on the manipulation input surface and the section area data by using a driving signal causing the at least one of the first vibrating elements and the second vibrating elements to generate a natural vibration in an ultrasound-frequency-band in the manipulation input surface.

Electronic device, drive controlling method, and drive controlling apparatus

An educational tactile sensation providing apparatus includes a top panel having a manipulation input surface; a position detector configured to detect a position of a manipulation input performed on the manipulation input surface; a display part disposed on a back face side of the top panel; a first vibrating element configured to generate a vibration in the manipulation input surface of the top panel; a memory configured to store tactile sensation data in which an image of a target tangible object is associated with positions in the image and amplitudes corresponding to tactile sensations of the target tangible object at the respective positions; and a drive controlling part configured to adjust an amplitude of a driving signal based on the position of the manipulation input performed on the manipulation input surface and a position among the positions in the image included in the tactile sensation data.

Educational tactile sensation providing apparatus and system

A drive apparatus includes a memory to store waveform data representing a sinusoidal drive signal satisfying a frequency f=(m/n)&#xd7;q(t) (m and n: natural numbers, m&#x2260;n), to vibrate a vibration-generating device m times, where q(t) is a time characteristic of a resonance frequency of the vibration-generating device, or ((m/2)&#xd7;r) times (r: natural number&#x2260;0, m and n: positive odd, m&#x2260;n), the vibration-generating device having the resonance frequency varying depending on an acceleration amplitude in a range between first and second resonance frequencies including the rated value f; and a drive-processor to output the drive signal to the vibration-generating device. The q(t) is obtained when driving the vibration-generating device by a sinusoidal drive signal satisfying f=(m/n)&#xd7;f, to vibrate the vibration-generating device m times if m&#x2260;n, or ((m/2)&#xd7;r) times.

Drive apparatus, electronic device, drive control program, and drive signal generating method

A drive control apparatus includes a storage configured to store waveform data representing a drive signal constituted of a sine wave satisfying a frequency f=(m/n)&#xd7;f(m and n are mutually different positive odd numbers), the drive signal applying vibration (m/2)&#xd7;Q times (Q is a natural number other than 0) to an actuator, the frepresenting a resonant frequency of the actuator, and a drive controller configured to read the waveform data stored in the storage, and output the drive signal corresponding to the read waveform data to the actuator.

Drive control apparatus that drives actuator, electronic apparatus that drives actuator, and control method for driving actuator

A drive control apparatus includes a storage storing first or second waveform data representing a drive signal, and a drive controller reading the first or the second waveform data, and output the drive signal to the actuator. The first waveform data applying vibration m&#xd7;Q times (Q is a natural number other than 0) and obtained by multiplying a sine wave (f1=(m/n)&#xd7;f0 (m and n are mutually different natural numbers other than 0)) by a damping ratio of a vibration system to an actuator, and the second waveform data applying a vibration (m/2)&#xd7;Q times (Q is a natural number other than 0) and obtained by multiplying a sine wave (a frequency f1=(m/n)&#xd7;f0 (m and n are mutually different positive odd numbers)) by the damping ratio to the actuator, where f0 represents a resonant frequency of the actuator.

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Ebina, Japan

Kiyoshi Taninaka