Panasonic Corporation

Matsushita Electric Industrial Co., Ltd.

Panasonic Intellectual Property Management Co., Ltd.

Panasonic Intellectual Property Corporation of America

Takeshi Shimamoto

Katsuya Watanabe

Takashi Kawamura

Yoshiaki Komma

Takeharu Yamamoto

Masahide Tsukamoto

Takashi Kishimoto

Kozo Ezawa

Masahiro Takada

Toshihiko Ichinose

Kazuo Arai

Kazufumi Yamaguchi

Junko Shimamoto, Legal Representative

Yasumori Hino

Kenji Kondo

Kousei Sano

Shin-ichi Kadowaki

Teruyuki Takizawa

Junichi Minamino

Hidenori Wada

Yusuke Monobe

Hideki Nakata

Kazuyuki Murata

Yutaka Taguchi

Akihiro Miyazaki

Takahiro Sato

Joji Anzai

Toshio Inaji

Yoshiaki Igarashi

Katsumi Kozu

Yuuichi Kuze

Keisuke Fujimoto

Shin-ichi Yamada

Yasushi Ayaki

Tomoo Kimura

Tsutomu Kai

Shinsuke Ogata

Yoshiaki Sugitani

Nobuyoshi Nagagata

Hiroshige Ishibashi

Kazutsugu Kobayashi

Seiji Kubo

Fumikazu Tateishi

Yoshihiro Yokoyama

Fumikazu Tateishii

Toshimine Ide

A flying object control system includes a flying object, and a setting base that performs holding of the flying object and releasing the holding, the flying object and the setting base being communicable with each other. The flying object controls, upon receiving a takeoff instruction, thrust for taking off from a predetermined initial position, and when the thrust becomes greater than or equal to a first threshold, the flying object notifies the setting base of a start notification. Upon receiving the start notification, the setting base releases the holding of the flying object and notifies the flying object of a release completion notification. Upon receiving the release completion notification, the flying object takes off from the predetermined initial position by controlling the thrust in such a manner that the thrust becomes a second threshold smaller than the first threshold.

Flying object control system and flying object control method

A stylus detecting device detects a pointed position which is a position pointed to by a stylus, and includes a first camera; a second camera; and a control unit including an axis detecting unit that detects a three-dimensional position and attitude of an axis of the stylus by using two images captured respectively by the first and second cameras, and a pointed position detecting unit that calculates as the pointed position a point of intersection between a straight line indicated by the axis of the stylus whose three-dimensional position and attitude have been detected by the axis detecting unit and a target plane having a predetermined positional relationship with respect to the first and second cameras.

Stylus detecting device and stylus detecting method

An imaging device includes: a movable lens unit including at least one lens for converging light from a subject and a lens holder supporting the at least one lens; a body base supporting the movable lens unit so as to be capable of moving along a first direction and a second direction which are orthogonal to each other on a plane perpendicular to an optical axis of the at least one lens and along a third direction which is parallel to the optical axis of the at least one lens; an imager being supported by the body base for converting light transmitted through the movable lens unit to an electrical signal; a driving mechanism being provided on the movable unit and/or body base for driving the movable lens unit along the first, second, and third directions; and a plurality of strain detectors provided between the movable unit and the body base.

Image pickup device

An image capturing device in one aspect of the present invention includes: an imaging device; a lens optical system including a focus lens; a driving section for driving one of the imaging device and the focus lens; a displacement control section for controlling displacement of the imaging device or the focus lens to be driven based on a predetermined displacement pattern; a diaphragm having an aperture having a size which can be changed and being provided in the lens optical system; an aperture control section for controlling the size of the aperture of the diaphragm; a synchronizing section for controlling the displacement control section and the aperture control section based on exposure timing; and an image capturing parameter determining section for determining the exposure time, the size of the diaphragm aperture, and the displacement pattern, wherein: the predetermined displacement pattern includes a first-type displacement pattern and a second-type displacement pattern by which the imaging device or the focus lens is displaced over different ranges between a first focus position and a second focus position in an image capturing scene; the first-type displacement pattern and the second-type displacement pattern are repeated alternately; and the aperture control section controls the diaphragm so as to have a first aperture and a second aperture having a different size from that of the first aperture in the first-type displacement pattern and the second-type displacement pattern based on timing from the synchronizing section.

Image capturing device, semiconductor integrated circuit, and image capturing method

An image-capturing device disclosed in the present application includes: an image-capturing element including a plurality of photoelectric conversion elements arranged in two dimensions, wherein the plurality of photoelectric conversion elements are exposed through successive scanning and electrical signals are read out from the plurality of photoelectric conversion elements through successive scanning, thereby generating an image signal; a lens optical system including a focus lens for collecting light toward the image-capturing element; a driving section for driving one of the image-capturing element and the focus lens so as to change a distance between the image-capturing element and the focus lens; a displacement control section for outputting a command to the driving section so as to control displacement of the image-capturing element or the focus lens to be driven based on a predetermined displacement pattern; and a synchronizing section for controlling the displacement control section based on exposure timing of the image-capturing element, wherein: the predetermined displacement pattern represents a reciprocal displacement of the image-capturing element or the focus lens to be driven over an entire section between a first focus position of the focus lens or the image-capturing element at which focus is at a first object distance in an image-capturing scene and a second focus position of the focus lens or the image-capturing element at which focus is at a second object distance in the image-capturing scene; and the image-capturing element or the focus lens to be driven is reciprocally displaced an integer number of times within an exposure time for one image of the image-capturing scene for each of the plurality of photoelectric conversion elements.

Imaging device, semiconductor integrated circuit, and imaging method

A movement control apparatus includes: an actuator that causes a driven body connected to a driving coil to perform reciprocating movement; a signal generation unit that generates a velocity command signal which indicates a target velocity of the driven body; a driving unit that supplies electric current corresponding to a driving signal to the driving coil; a voltage detection unit that detects induced voltage generated in the driving coil, and outputs a voltage signal corresponding to the induced voltage; a signal correction unit that corrects, based on the driving signal and the voltage signal, the voltage signal to adjust a shift of a resistance value from a reference resistance value of the driving coil, thereby generating a velocity signal; and a control unit that generates the driving signal based on the velocity command signal and the velocity signal, and outputs the driving signal to the driving unit.

Movement control apparatus, movement control method, and movement control circuit

An image pickup device includes an image pickup element; a lens optical system including a focus lens; a driving section for driving one of the image pickup element and the focus lens so as to change a distance between the image pickup element and the focus lens; a displacement control section configured to output an instruction to the driving section to control displacement of the image pickup element or the focus lens which is driven, based on a prescribed displacement pattern; and a synchronization section configured to control the displacement control section based on timing for exposing the image pickup element.

Image pickup apparatus, semiconductor integrated circuit and image pickup method

An image capture device according to the present disclosure includes: an image sensor; a lens optical system condensing light onto the image sensor and including a focus lens; a driving section driving one of the image sensor and the focus lens to change a distance between the image sensor and the focus lens; a displacement control section configured to control the displacement of the one being driven according to a predetermined displacement pattern by outputting an instruction to the driving section; and a synchronizing section configured to control the displacement control section by reference to timing of exposure of the image sensor. The displacement range of the image sensor or focus lens includes a first range, a second range separated from the first range, and a third range interposed between the first and second ranges. The predetermined displacement pattern includes first, second and third types of displacement patterns according to which one of the image sensor and the focus lens is displaced at least once in each of the entire first, second and third ranges. And one of the first and second types of displacement patterns and the third type of displacement pattern repeated alternately.

Imaging device, semiconductor integrated circuit and imaging method

An optical disc apparatus has: a spherical aberration correction unit () which corrects the spherical aberration generated in a light spot on a recording layer; a control unit () which focuses a light beam on a predetermined recording layer, and shifts the focal point position of the light beam from the current recording layer to another recording layer; and a focus jump control unit () which controls correction of spherical aberration and shift of the focal point position based on the interlayer distance between the current recording layer and a recording layer which adjoins in a direction opposite to a direction of shifting the focal point position of the light beam. By this configuration, focus jump is stably executed.

Optical disc apparatus, focus control method and integrated circuit

When information is recorded or reproduced on or from an optical information medium having three or more recording layers using blue light, interference by another layer light is reduced and, when information is reproduced from an optical information medium using red light, an S/N ratio is held excellently high. An optical head device includes a first laser light source () which emits blue light, a second laser light source () which emits red light, an objective lens () which focuses the blue light onto a recording layer of a first optical disc () or focuses the red light onto a recording layer of a second optical disc (), a photodetector () which receives the blue light reflected by the recording layer of the first optical disc () or the red light reflected by the recording layer of the second optical disc () and outputs an electric signal in accordance with an amount of the received blue light or red light, and a wavelength selective light blocking region () which blocks a predetermined range of the blue light including an optical axis thereof to prevent the predetermined range from reaching the photodetector (), and transmits the red light.

Optical head device, optical information device, and information processing device

Provided are an optical disc discrimination method, an optical disc device and an integrated circuit that enable to accurately discriminate the type of an optical disc. The optical disc discrimination method comprises a first seeking step (S) of performing a seek operation to a predetermined reference address in a user data area; a second seeking step (S) of performing a seek operation from the reference address sought in the first seeking step (S) to a predetermined target address in a physical information area, an address reading step (S) of reading a current address at a position sought in the second seeking step (S), and an optical disc type determination step (Sthrough S) of determining the type of the optical disc loaded in the optical disc device, based on the current address read in the address reading step (S).

Optical disc discrimination method, optical disc device and integrated circuit

An optical disc device is provided with an optical head including a light source, a condensing optical system including an objective lens for receiving a light beam emitted from the light source and forming a microspot on a multilayer optical recording medium, a photodetector for receiving the light beam reflected by the multilayer optical recording medium and outputting an electrical signal corresponding to the amount of light and a coma aberration correcting element for correcting a coma aberration of the condensing optical system, and a processing circuit for controlling the condensing optical system and the coma aberration correcting element. The processing circuit controls the condensing optical system and the coma aberration correcting element so that the correction of the coma aberration from a value suitable for a first recording layer to a value specified for a second recording layer is started before a movement of a focus position of the microspot from the first recording layer to the second recording layer is completed.

Optical disc device, video reproducing apparatus, server, car navigation system using the optical disc device, integrated circuit and recording/reproducing method

An optical disc drive according to the present invention can read and/or write data from/on an optical disc with information layers including first and second information layers (Land L). The drive includes: an objective lens for converging a light beam; a lens actuator for driving the lens; a photodetector section that receives the beam reflected from the disc and converts it into an electrical signal; and a control section for determining the values of a first group of parameters, which are set to read data from the first layer (L), and those of a second group of parameters, which are set to read data from the second layer (L), during a disc loading process. In performing the disc loading process, the control section determines the values of the first group of parameters, and then determines the values of the second group of parameters based on correlation information, representing correlation between the values of the first and second groups of parameters that were set during a previous disc loading process, and on the values of the first group of parameters that have been just determined during the current disc loading process.

Optical disc and optical disc device

With an optical disc apparatus of the present invention, the number of tracks of an optical disc crossed by a light spot when the tracking control is inactive is measured and stored in a memory for each passage of a predetermined rotation angle. When the tracking control is active, a lens tilt driving signal is generated by multiplying the value of a memory section corresponding to the disc rotation angle by a gain according to the disc rotation speed, thereby correcting the AC tilt occurring due to a lens shift.

Optical disc device and lens tilt control method

A power supply is provided, which is capable of stabilizing a generated output of the fuel cell using neither a voltage nor a current outputted from the fuel cell as a negative feedback signal. The power supply includes a fuel cell, a DC-DC converterthat adjusts a voltage outputted from the fuel cellaccording to a PWM signal and then outputs the voltage to a load device, a switching controllerthat generates the PWM signal and outputs this signal to the DC-DC converter, a voltmeterthat measures a voltage Vout outputted from the DC-DC converter, and a rechargeable batteryconnected to the load devicein parallel. The DC-DC convertercalculates a duty ratio of the PWM signal by performing a specific computation using the voltage Vout and a target fuel cell voltage Vt.

Power supply

Growing community of inventors

Osaka, Japan

Takeshi Shimamoto