Rohm Co., Ltd.

Stroly Inc.

Honda Motor Co., Ltd.

Optoelectronics Co., Ltd.

Nidec Corporation

Wakayama University

Toru Takahashi

Kei Nagao

Kazuhiro Nakadai

Hiroshi Okuno

Masaaki Nakayama

Hiroshi Hayakawa

Kentaro Takahashi

Varela Enrique Javier Arriaga

Toru Takuma

Yasuhiro Fujita

Katsuhiko Yoshihara

Tatsuya Noda

Masaki Omi

Masaki Yoshinaga

Masato Nakanishi

Takumi Okada

Yasuo Ishiyama

Toshio Irino

Hideki Kawahara

Masanori Morise

In a normal mode in which light emission control of the light emitting element is performed by a dimming controller (), if no communication signal from an external microprocessor () is recognized beyond a first predetermined period, the control logic circuit () shifts from the normal mode to a first limp home mode (limp homemode). In the first limp home mode, the dimming controller sets a light emitting element current set value based on a terminal current set value commensurate with a resistance value of a setting resistor (Rextiset) and a DC dimming set value for each of the channel set in the register (A), controls the current driver () so as to generate a current of the set light emitting element set value, and turns on and off the current driver based on a PWM on-duty for each of the channels set in the register.

Light emitting element driving device

It is possible to automatically acquire coordinate information and position information regarding a location name or the like on map representation data, in association with each other, with a map representation data processing device including: a map representation data acceptance unit that accepts map representation data; a character string acquisition unit that acquires a character string from the map representation data; a coordinate information acquisition unit that acquires coordinate information corresponding to the acquired character string; a position information acquisition unit that acquires pieces of position information corresponding to pieces of location information that are character strings, using a location dictionary that contains one or more pieces of location position information that associate the pieces of location information and the pieces of position information with each other; and a correspondence output unit that outputs the coordinate information and the position information in association with each other.

Map representation data processing device, correspondence information production method, and program

An information processing apparatus includes: a map expression data storage unit in which two or more pieces of map expression data are stored; a position specifying information storage unit in which one or more pieces of position specifying information are stored in association with the map expression data; a request instruction receiving unit that receives a request instruction containing specifying information for specifying map expression data, from a terminal apparatus; a data acquiring unit that acquires map user information having map user information specified with the specifying information, and one or more pieces of position specifying information associated with the map user information; and a transmitting unit that transmits position added map expression data in which a position specified with the map user information, or the position specifying information contained in the map user information is shown on the map expression data, to the terminal apparatus.

Information processing apparatus, information system, information processing method, and program

It is possible to realize navigation that employs map representation data acquired using a captured map photograph, with a map representation data processing device including: a photograph reception unit that receives a map photograph from a terminal device; a determination unit that searches a navigation information group that contains two or more pieces of navigation information that contain map representation data and two or more pieces of correspondence information that are each a set of coordinate information and position information on the map representation data, and determines a piece of navigation information that has a relationship that satisfies a first condition, with the map photograph; and a navigation information transmission unit that transmits the piece of navigation information determined by the determination unit, to the terminal device.

Map representation data processing device, information processing method, and program

A light emitting element drive device includes a driving circuit that supplies a variable drive current to a light emitting unit having one or more light emitting elements so that the light emitting unit can emit light, a drive reference voltage generation circuit that generates a drive reference voltage defining the upper limit value of the drive current and supplies the same to the driving circuit, and a specific external terminal capable of connecting to an external resistor. The drive reference voltage generation circuit operates selectively in a first mode to generate the drive reference voltage regardless of the state of the specific external terminal, or a second mode to generate the drive reference voltage in accordance with a second mode current through the specific external terminal.

Light emitting element drive device and light emitting system

In order to address a conventional problem that it is not possible to provide a user with map expression data whose display mode has been changed according to additional information, an information processing apparatus includes: a map expression data storage unit in which one or more pieces of map expression data expressing a map are stored, the data being associated with one or more attribute values containing region specifying information for specifying a region that is being expressed; an additional information storage unit in which additional information, which is information that is additional, is stored in association with the map expression data; and a transmitting unit that transmits map expression data to a terminal apparatus such that even same map expression data is displayed on the terminal apparatus in a different mode according to the additional information.

Information processing apparatus, information processing method, and program

An information processing apparatus includes: a map expression data storage unit in which two or more pieces of map expression data expressing a map are stored, the data being associated with one or more attribute values containing region specifying information for specifying a region that is being expressed; a receiving unit that receives position specifying information for specifying a position from a terminal apparatus; a data acquiring unit that acquires one or more pieces of map expression data associated with region specifying information corresponding to a position specified with the position specifying information, from the map expression data storage unit; and a transmitting unit that transmits the one or more pieces of map expression data acquired by the data acquiring unit, to the terminal apparatus.

An object of the present invention is to optimize a light-emitting driving voltage for each light-emitting portion. A light-emitting diode (LED) driver (A) includes: driver blocks () of a plurality of channels, each driver block () having a light-emitting portion connecting terminal (CH) to be connected to a light-emitting portion (LL) including one or more than one LED, the light-emitting portion being caused to emit light by a current flowing through the light-emitting portion connecting terminal to the light-emitting portion; a lowest voltage detection circuit (), detecting and outputting a lowest voltage among voltages of the light-emitting portion connecting terminals of each channel; a sample hold circuit (), comparing an output voltage (V) of the lowest voltage detection circuit with a hold voltage (V) thereof, and updating the hold voltage to the output voltage if the output voltage is lower than the hold voltage; and a feedback control circuit (), outputting a feedback signal according to the hold voltage and a predetermined reference voltage to a power supply device () providing a light emission driving voltage (Vo) to the light-emitting portions of the plurality of channels, so as to control the light emission driving voltage.

Light emitting device driving apparatus, light emitting device driving system and light emitting system

A semiconductor device includes a first overvoltage detection unit including a first comparator arranged to output a first detection signal based on a first divided voltage after dividing an output voltage of a power supply circuit by first resistors disposed externally and a second overvoltage detection unit including second resistors and a second comparator arranged to output a second detection signal based on a second divided voltage after dividing the output voltage by the second resistors.

Semiconductor device

A circuit element includes an upper switching device, a lower switching device, an upper diode device, and a lower diode device. An upper drain is connected to a first terminal connected to a positive electrode of a power supply, and an upper source is connected to a third terminal. A lower drain is connected to a fourth terminal, and a lower source is connected to a second terminal connected to a negative electrode of the power supply. An upper anode is connected to the fourth terminal, and an upper cathode is connected to the first terminal. A lower anode is connected to the second terminal, and a lower cathode is connected to the third terminal. The third terminal and the fourth terminal are arranged so as to be able to be short-circuited outside of a package.

Module, and power conversion apparatus and motor using the module

A semiconductor device includes: a diagnosis portion which diagnoses, when the device is started up, whether an abnormality occurs in a component for setting that is externally connected; and a control portion which stops the startup of the device when the diagnosis portion diagnoses that an abnormality occurs, the diagnosis portion diagnoses whether an abnormality occurs in which the connection of the component for setting that is a resistor is disconnected, the semiconductor device further includes an external terminal which is connected to one end of the resistor and the diagnosis portion includes a constant current circuit which passes a constant current through the resistor via the external terminal, a comparator to which a voltage produced at the external terminal is input and a transistor which switches between the connection and interruption of a path along which the constant current is passed.

An apparatus for driving a light emitting device includes a constant current control circuit configured to control a current flowing through the light emitting device to be constant, and an extension circuit configured to generate a post-extending PWM signal obtained by extending a period of an input PWM signal having a first level. The constant current control circuit is turned on during the period of the post-extending PWM signal having the first level, and the constant current control circuit is turned off during a period of the post-extending PWM signal having a second level.

Apparatus for driving light emitting device

Provided is a drive apparatus of a hybrid vehicle, configured in such a manner that the occurrence of a resonance phenomenon is minimized and that the efficiency of utilization of the space occupied by a torque limiter mechanism is improved. A drive apparatus for a hybrid vehicle is configured in such a manner that a torque limiter is provided in the path of power transmission between an inner shaft and a generator at a position between the generator and a motor. The torque limiter axially overlaps with at least a part of the stator of the generator and/or at least a part of the stator of the motor.

Drive apparatus for hybrid vehicle

The invention relates to a periodic signal processing method, a periodic signal conversion method, and a periodic signal processing device capable of reducing the influence of periodicity without using a spectral model. Time windows are arranged such that a center of each of the time windows is at a division position which divides a fundamental frequency in a temporal direction into fractions 1/n (where n is an integer equal to or larger than 2) so as to extract a plurality of portions of different ranges from a signal having periodicity. A power spectrum for the plurality of portions extracted by the respective time windows is calculated, and the calculated power spectrum is added with a same ratio.

Periodic signal processing method, periodic signal conversion method, periodic signal processing device, and periodic signal analysis method

A speech recognition system according to the present invention includes a sound source separating section which separates mixed speeches from multiple sound sources from one another; a mask generating section which generates a soft mask which can take continuous values between 0 and 1 for each frequency spectral component of a separated speech signal using distributions of speech signal and noise against separation reliability of the separated speech signal; and a speech recognizing section which recognizes speeches separated by the sound source separating section using soft masks generated by the mask generating section.

Growing community of inventors

Kyoto, Japan

Toru Takahashi