Sony Semiconductor Solutions Corporation

Keio University

Kanagawa Institute of Industrial Science and Technology

Tetsuya Tashiro

Masahiro Ichihashi

Masayuki Katakura

Kazumasa Nishimura

Yasunori Tsukuda

Nobuhiko Shigyo

Kouhei Ohnishi

Kouzi Tsukamoto

Takahiro Mizoguchi

Kenya Kondou

Tomoyuki Shimono

Boyang Hao

To improve stability of a reference current in a current source circuit that generates the reference current by using capacitors. The current source circuit includes a pair of capacitors, a switching circuit, an operational amplifier, and an output transistor. The switching circuit charges one of the pair of capacitors with a predetermined charging current, and transfers electric charge from the one of the pair of capacitors to the other of the pair of capacitors. The operational amplifier amplifies a difference between the terminal voltage of the other of the pair of capacitors and a predetermined reference voltage and outputs the difference that has been amplified as an output voltage. The output transistor outputs a current corresponding to the output voltage as a reference current.

Current source circuit and electronic device

A haptic transmission system includes a master device and a slave device. The master device controls position and force in an operation of the master device based on information acquired from the operation of the master device and information relating to a response of the slave device, and compensates for a communication delay in a communication path with respect to the control of force. The slave device controls speed and force in an operation of the slave device based on information acquired from the operation of the slave device and information relating to control from the master device.

Haptic transmission system, haptic transmission method, and program

Provided is an amplifier that includes a first transistor including a gate terminal to which an applied input signal is input, where a current depending on the applied input signal flows through the first transistor. A gate terminal of a second transistor is connected to a load section, and a current depending on a change in a voltage of the drain terminal of the first transistor flows through the second transistor. A source terminal of the first transistor and a drain terminal of the second transistor are connected in common to a first resistance, and the current from the first transistor and the current from the second transistor flow through the first resistance. A third transistor supplies a current approximately equal to the current of the second transistor. The current supplied by the third transistor is output from an output end.

Amplifier

A level shift circuit includes an input section to which input signal of a first power supply system is input, a supply section that includes a pair of nodes, and a regulator. The supply section is connected to one of a pair of power supply lines serving as a second power supply system of which a voltage level is higher than a voltage level of the first power supply system, the supply section supplying a potential of the one of the pair of power supply lines to one of the pair of nodes according to the input signal. The regulator is connected to another of the pair of power supply lines, the regulator regulating current flowing between the one of the pair of nodes that is supplied with the potential of the one of the pair of power supply lines, and the other of the pair of power supply lines.

Level shift circuit and electronic apparatus

Growing community of inventors

Kanagawa, Japan

Tetsuya Tashiro