Jvc Kenwood Corporation

Victor Company of Japan, Limited

Ryo Nishima

Katsumi Watanuki

Hisao Kinjo

Hironobu Fukutomi

Katsuyuki Shudo

Shunichi Shichijo

Yoshio Mizuno

Shigeru Kawase

Motoshi Tohda

Morihiko Ota

Kouichi Kawamura

Kenji Yasui

Norihisa Yamamoto

Takayuki Sugahara

Masato Furuya

Yuji Tanaka

Yuji Uchiyama

Tatsuya Sato

Hiromichi Hirayama

Manabu Kobayashi

Tatsuru Kobayashi

Takeshi Makabe

Yasuo Ishizaka

Kazutaka Aboshi

Tatsuya Mukouyama

Isao Kaneno

Yoshio Fukuzaki

Akihiro Hamaguchi

Hisato Seki

A projection device includes a projection unit including a display element in which pixel lines each formed by pixels arranged in a first direction are arranged in a second direction and an optical system that projects light emitted from the display element and projecting an image based on input image data, a first correction unit for correcting a scale of each line data of the image data that corresponds to each of the pixel lines, a second correction unit for correcting a second-direction scale of each pixel data of the image data after the correction performed by the first correction unit, and an image cutting-out unit for cutting out image data of an area, which is projected from the projection unit, of the image data after the correction performed by the second correction unit and input the image data of the area to the projection unit.

Projection device, image correction method, and computer-readable recording medium

A projector includes, a projecting unit that converts image data into light and projects the light at a predetermined angle of view, a projecting direction changing unit that changes the projecting direction of the projecting unit from a first projecting direction to a second projecting direction, a projection angle derivation unit that derives a projection angle between the first projecting direction and a projecting direction after changed, and an image cutting out unit that generates cut-out image data that a part of a region of an image of the inputted image data is cut out based on the angle of view and the projection angle as image data to be projected, when the projecting unit projects the image of the inputted image data stored on the storage unit across the first projecting direction and the second projecting direction.

Projector

A projection device includes a correction unit that corrects a trapezoidal distortion of a projection image projected onto a projection medium in accordance with a projection angle derived by a projection angle deriving unit, and the correction unit sets a correction amount for the trapezoidal distortion of a case where the derived projection angle is changed within a range larger than a first predetermined angle determined based on the projection direction toward a boundary between a first projection face and a second projection face and smaller than a second predetermined angle determined based on the projection direction toward the boundary to be the correction amount for the trapezoidal distortion at one of the first predetermined angle and the second predetermined angle or less.

Projection device and image correction method

An image projection apparatus includes a light modulation device that modulates light according to image data; a projecting unit that projects modulated light; an angle-of-view deriving unit that derives an angle of view at which modulated light is projected; a projection-direction changing unit that changes a projection direction from a first direction to a second direction; a projection-angle deriving unit that derives a projection angle between the first direction and a changed projection direction; a storage unit that stores image data; and an image cutting unit that generates cut-out image data by cutting a part of the image data based on the angle of view and the projection angle as image data projected from the first direction through the second direction, and the minimum variable angle is determined based on the angle of view and a size of an effective region of the modulated light.

Image projection apparatus and image projection method for projecting cut-out image in a predetermined cycle

An display apparatus, for a vehicle, according to one embodiment includes a substrate housing portion, an optical unit, a turning member, and a plate-like attachment plate. The substrate housing portion contains a circuit substrate for outputting an image signal of an image to be displaced. The optical unit generates an image based on the image signal outputted from the circuit substrate and projects the generated image. The combiner is provided at one end of the optical unit, and the image is projected onto the combiner. The turning member connects the optical unit to the substrate housing portion in a freely rotatable manner. The plate-like attachment plate is used to mount the substrate housing portion to a rear-view mirror such that the optical unit is freely rotatable without coming into contact with the rear-view mirror inside a vehicle.

Display apparatus for vehicle

In a projector, a projection unit includes a projection mechanism that projects an image and an air hole that takes in or exhausts air used to dissipate heat generated from a light source included in the projection mechanism. A housing covers the air hole when the projection unit is in a storage position in which the projection unit does not project an image and uncovers the air hole when the projection unit is in a projection position in which the projection unit projects an image. The drive mechanism moves the projection unit or a cover member. An electronic control unit controls the drive mechanism to move the projection unit to the projection position in which an image is projected when receiving a predetermined projection preparation request and move the projection unit to the storage position in which no image is projected when receiving a predetermined storage request.

A first linearly polarized bundle of rays of incident rays is converted by optical modulation with an input video signal into a second linearly polarized bundle of rays orthogonal to the first rays in polarization. The first rays pass through a polarizer before optically modulated. A second linearly polarized bundle of rays originally involved in the incident rays is reflected by the polarizer in a first direction. The second rays obtained by the optical modulation are reflected by the polarizer in a second direction. The second rays reflected in the second direction pass through another polarizer. A first linearly polarized bundle of rays involved in the reflected second rays is reflected by the other polarizer. The reflected first rays is detected by an optical sensor that is positioned outside an optical path of the second rays originally involved in the incident rays and reflected in the first direction.

Light modulator, projection display apparatus and image projection method

An optical color separation and synthesis system is constructed according to a method, in which four first to fourth polarization beam splitters are arranged in such a manner that polarization separating surfaces of the polarization beam splitters form an X-shape, a predetermined gap is formed between facing surfaces of the polarization beam splitters before bonding the polarization beam splitters onto a base platform, and thereafter a frame comprising an opening in a middle portion thereof and a stepped portion to be bonded to an optical function plate in a peripheral portion thereof is secured to any of the first to fourth polarization beam splitters.

Optical color separation and synthesis system, and method of constructing optical color separation and synthesis system

By mounting a projection lens to a first supporting member for fixing spatial light modulators, polarization beam splitters and a cross dichroic prism, and providing a second supporting member having a thermal expansion coefficient larger than that of the first supporting member between the projection lens and the first supporting member, afluctuation of distance between the spatial light modulators and the projection lens due to heat generated by a light source lamp of a projection type display apparatus and temperature change in use environment can be canceled so that an optimum projected image having nothing to do with being out of focus can always be obtained.

Projection type display apparatus

A magnetic recording and reproducing apparatus includes a tape guide drum (10) composed of a lower stationary drum (10A) supported integrally with a drum shaft (18) and an upper rotary drum (10B), a lead member (12) provided separately from the lower drum and composed of an annular portion (52) having a portion for guiding a reference edge Te of a magnetic tape T and a bottom portion (53). The apparatus further includes pivot means provided inside the drum to support and allow the center axis of the drum to tilt with respect to the annular portion of the tape guide.

Magnetic recording/reproducing apparatus with tilting head drum for

A device for detecting the position of a recording/reproducing element, which is provided with two position detecting elements having the same input/output characteristics and a device for generating a difference signal representing the difference between output signals of the two position detecting elements. Further, the outputs of the position detecting elements vary correspondingly to change in position of the recording/reproducing element in such a manner to be complementary to each other.

Device for detecting the position of a recording/reproducing element

A magnetic head actuator for displacing a magnetic head on a rotary magnetic head drum in a magnetic recording and reproducing apparatus includes a hollow cylindrical yoke housing a permanent magnet and a central pole therein, providing a magnetic circuit having an air gap. A support shaft axially movably extends through the yoke and has opposite ends positioned outside of the yoke. A coil bobbin is attached to the end of the support shaft which is positioned outside of the open end of the yoke. The coil bobbin supports a coil which is axially movably positioned in the air gap. Two parallel resilient suspension support wings are mounted on the yoke and attached respectively to the opposite ends of the support shaft. A magnetic head holder supporting a magnetic head is mounted on the end of the support shaft near the bottom of the yoke. When the coil is energized, the coil bobbin and hence the support shaft are axially moved to displace the magnetic head to a desired track on a magnetic tape around the rotary magnetic head drum. Since the support shaft is supported by the parallel suspension support wings, the magnetic head is held in good contact with the magnetic tape and prevented from being tilted out of a desired azimuth with respect to the magnetic tape. The magnetic head which is positioned near the bottom of the yoke is free from leakage fluxes from the magnetic circuit.

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Yokohama, Japan

Ryo Nishima