Fuji Xerox Co., Ltd.

Sanyo Electric Co., Ltd.

Tosoh Corporation

Sony Corporation

Fuji Photo Film Company, Limited

Sony Semiconductor Solutions Corporation

Panasonic Intellectual Property Management Co., Ltd.

Asahi Glass Company, Limited

Nippon Zeon Company, Ltd.

Nec Corporation

Olympus Corporation

Lenovo (singapore) Pte. Ltd.

Other

Olympus Optical Company, Ltd.

Fujifilm Business Innovation Corp.

Hiroyuki Watanabe

Chikara Manabe

Kazunori Anazawa

Masaaki Shimizu

Taishi Shigematsu

Masaki Hirakata

Miho Watanabe

Kentaro Kishi

Hideki Mizuhara

Kenji Tsuzuki

Takashi Isozaki

Shigeki Ooma

Shinsuke Okada

Kei Shimotani

Yasuaki Hanasaki

Mikio Ito

Teruhiko Ide

Kaori Misawa

Seigo Koura

Teppei Shibata

Masaki Hirase

Mitsuyuki Murakami

Hiroyuki Aoe

Sinzo Someya

Noritoshi Niimi

Kazuaki Tsukuda

Morio Yagihara

Masakazu Morigaki

Yoshihiro Fujita

Shigeru Nakamura

Yasunori Inoue

Hiroshi Kawamoto

Shinichi Tanimoto

Takumi Tokunaga

Yasuhiro Yoshioka

Koki Nakamura

Hiromitsu Yamaguchi

Ryosuke Usui

Takahiro Naito

Takashi Fujii

Naoteru Matsubara

Keizo Koya

Nobuhiko Shigyo

Hirotsugu Kashimura

Ken Nakaoka

Hideshi Tsukamoto

Koh Yokokawa

Daisuke Arai

Akira Yukitake

Hisashi Suekane

Hidenori Onishi

Daisuke Ide

Shoji Goto

Kimio Katsuura

Masami Totsuka

Nobuo Seto

Satoshi Kondo

Hisae Yoshizawa

Masanori Baba

Takashi Morikawa

Yasushi Katayama

Yoshisada Nakamura

Takayoshi Kamio

Jean-Louis M Bravet

Shinji Hasegawa

Hideaki Sugimoto

Takeshi Nakamura

Tomoko Miyahara

Shuichi Akita

Toshikazu Imaoka

Hiroyuki Yoshimori

Toshihiko Higuchi

Noriaki Kojima

Takumi Kagawa

Shintaro Suzuki

Yoshikazu Yamaoka

Hiroshi Washita

Kazuhiko Kuga

Hiroshi Arakatsu

Yoshihisa Mori

Yoshio Fukuda

Shiro Shigeta

Hideaki Takayama

Atsuhiro Nishida

Tatsuo Imamura

Hiromitsu Takayama

Toshimichi Naruse

Masaya Uemura

Mitsuru Yamane

Atsushi Kato

Takeyasu Koyanagi

Noel Crux

Takeshi Yamaguchi

Yuki Iguchi

Kentarou Kishi

Kimihide Saito

Hisakazu Muta

Satoshi Egawa

Kazunobu Uchiyama

Hirokazu Yamada

Provided is a low voltage and compact digital control regulator that achieves enhanced stability and reduced variations in ripple voltage and droop characteristics. The digital control regulator includes a first A/D converter configured to generate a first digital signal according to a differential voltage between an output voltage and a first reference voltage, an output stage circuit configured to generate the output voltage, a replica circuit having the same circuit configuration as the output stage circuit and configured to output a replica voltage related to the output voltage, a second A/D converter configured to generate a second digital signal according to a differential voltage between the replica voltage and a second reference voltage, and a control circuit configured to generate a control signal for controlling a gain of the output stage circuit, according to the first digital signal and the second digital signal.

Digital control regulator

A method for controlling a charging of a battery pack for a portable electronic device. The battery pack includes one or more cell blocks, each having a plurality of battery cells connected in parallel. The method includes the following steps. Determining, for each of the one or more cell blocks, a value of a first charging current flowing through a first battery cell that has the smallest capacity among the plurality of battery cells. Comparing, for each of the one or more cell blocks, the value of the first charging current with a first overcurrent value of the first battery cell to detect overcurrent in the first battery cell. Generating, in response to detecting the overcurrent in the first battery cell of any of the one or more cell blocks, a first overcurrent signal to reduce a total charging current of the battery pack.

Charging control method of a battery pack for portable electronic devices

To provide a digitally controlled LDO regulator that can control an output voltage even during an auto-zero processing period. A digitally controlled low dropout regulator is provided that includes a plurality of AD converters and an impedance variable circuit, each of the plurality of AD converters including a comparator, in which a first signal from each of the plurality of AD converters is input to the impedance variable circuit; a second signal output from the impedance variable circuit is input to one of two terminals of each of the plurality of AD converters; when one of the plurality of AD converters is in operation, another of the plurality of AD converters performs auto-zero processing to set a voltage value used as a reference; and the comparator compares a voltage value of the second signal input to the one of the two terminals with the set voltage value.

Digitally controlled low dropout regulator

A method is provided for controlling a discharge of a battery pack that supplies power to a portable electronic device. The battery pack has one or more cell blocks each having a plurality of battery cells connected in parallel. The method includes the following steps. Determining, for each of the one or more cell blocks, a value of a first supply current flowing through a first battery cell that has the smallest capacity among the plurality of battery cells. Comparing, for each of the one or more cell blocks, the value of the first supply current with a first overcurrent value of the first battery cell to detect overcurrent in the first battery cell. Generating, in response to detecting the overcurrent in the first battery cell of any of the one or more cell blocks, a first overcurrent signal to reduce the power supplied to the portable electronic device.

Discharge control method of a battery pack for portable electronic devices

A reference voltage circuit () includes a PTAT voltage generation circuit () that generates a voltage with a positive temperature coefficient, a CTAT voltage generation circuit () that generates a voltage with a negative temperature coefficient, and a temperature characteristic adjustment circuit () that generates a voltage for adjusting temperature characteristics. The reference voltage circuit outputs a reference voltage (VOUT) formed by calculation based on the output of the PTAT voltage generation circuit, output of the CTAT voltage generation circuit, and output of the temperature characteristic adjustment circuit.

Reference voltage circuit and electronic apparatus with proportional and complementary voltage generation and temperature characteristic adjustment circuit

An activation circuit which can realize both of area reduction and current consumption reduction by more preferred embodiments. The activation circuit has an N-type MOS transistor having a gate terminal connected to a ground and having a threshold voltage in a vicinity of 0 V and a resistor interposed between a source terminal of the MOS transistor and a ground, wherein an electric potential of a drain terminal of the MOS transistor is controlled depending on a first signal output from a device serving as a drive target, and transmission of a second signal for activating the device is controlled depending on the electric potential of the drain terminal.

Activation circuit for activating a drive target

A starting circuit capable of further reducing an influence of a variation in the threshold voltage of a transistor is proposed. The starting circuit includes an N-type first MOS transistor whose threshold voltage is near 0 V, a resistor interposed between a source terminal of the first MOS transistor and a ground, and a control circuit controlling a gate voltage of the first MOS transistor. An amount of first current transmitted to a device to be driven and starting the device is controlled according to the control of the gate voltage.

Starting circuit

An image forming apparatus includes a printing unit that prints an image on a recording medium, and an image quality adjustment unit that performs an image quality adjustment of the printing unit in a case of a state in which an operation is started, which causes the number of operations performed by a user to become larger than a predetermined number.

Image forming apparatus and non-transitory computer readable medium storing program

A wireless communication device mountable in a vehicle acquires first position information on the vehicle and receives a packet signal from another wireless communication device, the packet signal including second position information on another vehicle in which the other wireless communication device is mounted. The wireless communication device has a storage that stores log information and a controller. The controller predicts whether the vehicle crosses the other vehicle at a point of crossing based on the first position information and the second position information, estimates a structure of crossing corresponding to the point of crossing based on the history information, and determines, when it is predicted that the vehicle crosses the other vehicle at the point of crossing, whether or not to notify a presence of the other vehicle to a driver of the vehicle, in accordance with the structure of crossing corresponding to the point of crossing.

Wireless communication device

[Object] [Solving Means] A discharge device includes a discharge unit and a cut-off detection unit. The discharge unit is configured to discharge a capacitor at a variable discharge current value on the basis of a voltage of a rectified signal obtained by full-wave rectifying an AC voltage input via an input filter including the capacitor. The cut-off detection unit is configured to monitor the voltage of the rectified signal and to detect whether or not a power supply is cut off on the basis of a change of the voltage when the capacitor is discharged by the discharge unit at a specific discharge current value.

Discharge device, power supply apparatus, and discharge method with power supply cut-off detection and capacitor discharge

The present technology relates to an image capturing apparatus, a method, and a program for performing appropriate zoom control. An angular velocity detection unit detects an angular velocity of movement of an image capturing apparatus. An operation determination unit determines an operation state of a user based on the angular velocities at a plurality of times. A zoom control unit performs zoom control based on the operation state. As described above, by using angular velocities at a plurality of times, it is possible to identify the operation state in more detail and to perform appropriate zoom control depending on the user's operation state. The present technology can be applied to a digital camera, a digital still camera, a multifunctional mobile phone and the like.

Image capturing apparatus, method, and program with operation state determination based upon angular velocity detection

A switching power supply device includes a switching element to which a DC input is supplied, a frequency control circuit which controls a switching frequency of the switching element, a frequency detection circuit which detects the switching frequency of the switching element, and a duty ratio control circuit which controls a switching duty ratio based on the frequency detected by the frequency detection circuit. The duty ratio control circuit controls the switching duty ratio such that the switching frequency becomes an approximately maximum frequency.

Switching power supply device, switching power supply control method, and electronic apparatus

A modulating and demodulating section receives, from another radio device, a packet signal including at least position information of another vehicle in which the other radio device is mounted. A position information acquiring section acquires position information of the vehicle in which the radio device is mounted. An estimating section estimates a time taken for the vehicle and the other vehicle to encounter each other on the basis of these two pieces of position information. A deriving section derives a distance between the vehicle and the other vehicle on the basis of these two pieces of position information. A determining section provides notification of an encounter with the other vehicle in a case where the estimated time is equal to or less than a first threshold value or in a case where the derived distance is equal to or less than a second threshold value.

Radio device

Growing community of inventors

Kanagawa, Japan

Hiroyuki Watanabe