Kabushiki Kaisha Toshiba

Yosuke Toyama

Tetsuro Itakura

Osamu Watanabe

Takayuki Miyazaki

Takeshi Ueno

Taichi Ogawa

Kentaro Yoshioka

Akihide Sai

Toshiki Sugimoto

Satoshi Kondo

Kohei Onizuka

Tuan Thanh Ta

An oscillation circuit has a first oscillator having output nodes of n stages, where n is an integer of 3 or more, a second oscillator having output nodes of n stages, and a third oscillator having output nodes of n stages. An output node at an a-th stage of the first oscillator and an output node at an a-th stage of the second oscillator are connected with each other, where a is an integer of 1 or more and n or less and an output node at a b-th stage of the second oscillator and an output node at a b-th stage of the third oscillator are connected with each other, where b is an integer of 1 or more and n or less different from a.

Oscillation circuit, time-to-digital converter, and electronic device

An analog-to-digital converter has a first digital signal generator that generates a first digital signal based on whether or not a sampling signal of an input signal is equal to or lower than a signal corresponding to a second reference signal higher than a first reference signal, a first slope generator to generate a first slope signal that changes with time from the sampled and held signal equal to or lower than the first reference signal, a second slope generator to generate a second slope signal that changes with time from the sampled and held signal to a signal level equal to or lower than the second reference signal, and a second digital signal generator that generates a second digital signal based on a time at which the first slope signal matches the first reference signal or a time at which the second slope signal matches the second reference signal.

Analog-to-digital converter and electronic device

According to one embodiment, an information processing device, includes: a digital-to-pulse converter configured to output a pulse signal including a pulse with a pulse length corresponding to a digital input signal; and a bidirectional selective oscillator including a first ring oscillator and a second ring oscillator, the first ring oscillator including a plurality of delay elements connected in a ring shape in a first direction, the second ring oscillator including a plurality of delay elements connected in a ring shape in a second direction reverse to the first direction. The bidirectional selective oscillator is configured to select one of the first ring oscillator and the second ring oscillator depending on a sign of the digital input signal, oscillate the selected ring oscillator during a period when the pulse is outputted, and keep a state of oscillation operation when the pulse stops being outputted.

Information processing device, semiconductor device, and information processing method

A DC-DC converter includes an input terminal, multiple output terminals, an inductor, a first switch, a first condenser, a second switch and a switch controller. One end of the inductor is connected to the input terminal. The first switch is subjected to on-off control to change a current flowing through the inductor. The first condenser has one end connected between the inductor and a first output terminal, which is one of the multiple output terminals, and has the other end connected to a ground. The second switch is connected between the inductor and the first condenser. The switch controller controls the second switch to turn on when the first switch is turned off while a first output voltage from the first output terminal is smaller than a predetermined first threshold value.

DC-DC converter

According to one embodiment, a DC-DC converter, includes: an inductor configured to be supplied with an input voltage; a plurality of rectifiers connected in parallel to the inductor; a plurality of p-MOS transistors connected in series to the respective rectifiers; a switch configured to connect an output side of the inductor to a reference potential; and a control circuit configured to control the p-MOS transistors and the switch. The control circuit performs control to supply a voltage to turn on a first p-MOS transistor selected from among the p-MOS transistors to a gate terminal of the first p-MOS transistor, and to supply a voltage depending on an output voltage of the first p-MOS transistor to a gate terminal of a second p-MOS transistor other than the first p-MOS transistor among the p-MOS transistors.

DC-DC converter and power source device

An electronic circuit according to one embodiment of the present invention includes a first logic circuit, a second logic circuit, first and second capacitors, and a connection circuit. The first logic circuit has a first output terminal from which a first output signal based on a first input signal is output. The second logic circuit outputs a second output signal obtained by inversion of the first output signal is output in a steady state. The first and second capacitors each have one terminal at a first voltage. The connection circuit connects one of the first output terminal and the second output terminal to the first capacitor, and the other to the second capacitor. The connection circuit interchanges connection destinations of the first capacitor and the second capacitor in accordance with a received first connection control signal.

Growing community of inventors

Kawasaki, Japan

Yosuke Toyama