Canon Kabushiki Kaisha

Showa Highpolymer Co., Ltd.

Takeshi Iwasa

Tsutomu Ishida

Kenichi Kataoka

Eiichiro Takiyama

Mitsuhiro Imaizumi

Masataka Kotani

Hiromasa Masuta

Haruhiko Kondo

The present invention relates to a medical apparatus which includes a motion mechanism which has at least one degree of freedom, an actuator configured to drive the motion mechanism and a control unit configured to control the actuator, and which operates in a magnetic field environment of an MRI, the medical apparatus including: a data storage unit in which data related to magnetic susceptibility of the actuator is stored; a calculating unit configured to calculate information related to an influence which the actuator exerts upon the magnetic field environment by calculation based on the magnetic susceptibility; and a communication unit configured to output the information to the MRI. An influence which an apparatus which operates in a strong magnetic field environment exerts upon an MR image can be reduced.

Medical apparatus

A synchronization control device includes a detection unit configured to detect at least one of a position and an orientation of the device in a three-dimensional space. The synchronization control device includes one or more image pickup elements, and a control unit configured to control such that a phase of an image capturing timing of the one or more image pickup elements is synchronized with a phase of a detection timing of the detection unit, and a cycle length of the image capturing timing is equal to a cycle length of the detection timing or an integral multiple of the cycle length of the detection tuning.

Synchronization control device and synchronization control method

The present invention aims to appropriately prevent an excessive temperature rise of a portable apparatus according to a situation of a heat release property of the portable apparatus. For such a purpose, there is provided a portable apparatus which comprises: a temperature estimating unit configured to estimate a temperature of the portable apparatus; a heat release property determining unit configured to determine whether or not a heat release property of the portable apparatus satisfies predetermined performance, based on information related to an orientation of the portable apparatus; and a stop controlling unit configured to stop at least a part of functions of the portable apparatus, based on the temperature estimated by the temperature estimating unit and a determination result by the heat release property determining unit.

Portable apparatus controlling stopping of functions based on temperature, heat release property and stationary status

A recording medium determination apparatus that determines grammage of a recording medium by using an ultrasonic wave includes a transmission unit configured to output an ultrasonic wave having a predetermined frequency, a reception unit configured to receive the ultrasonic wave output from the transmission unit and transmitted through the recording medium and output a received signal, a calculation unit configured to calculate a signal having a peak component according to a cycle of the received signal, and a determination unit configured to determine the grammage of the recording medium based on the signal calculated by the calculation unit.

Recording medium determination apparatus and image forming apparatus

An unnecessary vibration detection apparatus of a vibration type actuator includes an AC voltage generation unit that generates a plurality of AC voltages having a driving frequency; a vibration detection unit that outputs a vibration detection signal of the vibration type actuator; and an unnecessary vibration detection unit that detects an unnecessary vibration component by generating a signal for cancelling the vibration component of the driving frequency in the vibration detection signal by controlling amplitudes of a plurality of AC signals which are used for generating the plurality of AC voltages.

Unnecessary vibration detection apparatus and driving control apparatus of vibration type actuator

A driving device, including a drive signal generating section configured to variably control a frequency or an amplitude of an application voltage to a vibration member, includes a variable period setting section configured to output a value of a PWM period, the set value being set so that an average value of PWM periods in one target period of the application voltage is one fraction of an integer number of the target period by variably adjusting the PWM periods in an aperiodic manner; a drive waveform information output section; and a variable period PWM signal generating section configured to generate a PWM signal based on the set value of the PWM period output from the variable period setting section and drive waveform information of the application voltage, wherein the drive signal generating section is a digital circuit.

Driving device and driving circuit for a vibration actuator

An inner-rotor brushless motor includes a holding member configured to hold a stator core. The holding member includes a mounting surface disposed perpendicular to a shaft and brought into contact with a mating member in which the inner-rotor brushless motor is installed; bent portions integrated with the mounting surface, bent upward so as to be substantially perpendicular to the mounting surface, and configured to hold the outer circumferential surface of the stator core; and mounting flanges used for fastening the motor to the mating member. The mounting surface, the bent portions, and the mounting flanges are integrated with each other.

Inner-rotor brushless motor

A sheet formed by using as a main component an aliphatic polyester having a melt viscosity of 1.0.times.10.sup.3 -1.0.times.10.sup.6 poises at a temperature of 190.degree. C. and a shear rate of 100 sec.sup.-1, and having a melting point of 70.degree.-190.degree. C. The sheet of the present invention is biodegraded when buried in soil and is excellent in mechanical properties and transparency. The sheet is also superior in non-absorbency of aroma as well as heat-sealability and formability.

Growing community of inventors

Kawasaki, Japan

Takeshi Iwasa