Hitachi-lg Data Storage, Inc.

Honda Motor Co., Ltd.

Hitachi, Ltd.

Atsushi Yamada

Koichiro Nishimura

Toru Kawashima

Tsuyoshi Toda

Tomoya Hoshi

Mitsuhiro Nishidate

Hajime Yoshimura

Takuya Matsumoto

Tooru Kawashima

Atsushi Fuchiwaki

Norimoto Ichikawa

Masahiro Akiyama

Hikaru Yokomura

Fumiyoshi Kanbara

Keigo Mine

Tasuku Yamaguchi

Mitsuru Harai

Jinya Ikeda

Tetsuya Fushimi

A fuel tank structure that makes it difficult for mud, water, dust or the like to enter a fuel tank and that can restrict a fuel leakage path when a vehicle falls. A fuel cap includes a cap body mounted to a fuel supply port of a fuel tank, and a pressure adjusting device provided in the cap body to adjust a pressure in the fuel tank. In the fuel cap, a space is formed as a hermetically closed space in which the pressure adjusting device is accommodated, and the space communicates with an exterior of the fuel tank via a breather tube.

Fuel tank structure

An oil pan includes a lubricant guide surface positioned above a lower end of an output gear located at the lowest position in a gear train. The lubricant guide surface is inclined so as to descend toward the output gear in an axial view of the output gear, and is inclined so as to descend from opposite ends to a central part in the axial direction of the output gear on the lubricant guide surface.

Transmission

In a transmission including: a transmission shaft driven by an electric motor; and a case that supports the electric motor and the transmission shaft, the transmission includes an adapter that is interposed between the case and the electric motor to which the electric motor is attached. The adapter is in contact with one end of the transmission shaft in an axial direction of the transmission shaft.

An auger snow-removing machine includes a forward rotation shaft and a reverse rotation shaft disposed on the same axis and aligned in a width direction of an auger housing within the auger housing, and a transmission disposed inside the auger housing such that the forward rotation shaft and the reverse rotation shaft are rotated concurrently in opposite directions by a driving force transmitted from the transmission. A case of the transmission is divided into a front case member and a rear case member at a position behind a reverse rotation drive shaft extending in the width direction of the auger housing. The front case member has a first gear unit assembled therein, and the rear case member has a second gear unit assembled therein. The first and second gear units are assembled together when the front and rear case members are assembled together.

Auger snow-removing machine

Provided is a technology in which a controller for controlling read/write performed to/from an optical disc includes a processor for controlling an interface, a temporary memory unit, a rotation control unit, and an optical control unit. The controller causes the processor to shift to a hibernate state when a predetermined condition is satisfied, and causes the processor to recover from the hibernate state into an active state when the interface receives a first command. The processor receives the first command from the interface, instructs the rotation control unit to drive the optical disc at a predetermined target rotational speed, instructs the optical control unit to perform a processing specified by the first command, transmits a completion notification of the first command to the interface with a delay, receives a second command after transmitting the completion notification of the first command, and executes the processing of the second command.

Optical disc drive and hibernation recovery method for an optical disc drive

It is to provide an optical disc recording apparatus and a recording power control method that are adapted to high-speed recording and can set an optimal erasing power with high accuracy. A test writing signal detector reproduces a test writing signal of a predetermined mark length or space length with varied power, and detects the number of error mark signals and an amplitude value of an envelope. A controller obtains a first threshold Peof the erasing power based on the number of error mark signals in a region where laser power is low, and obtains a second threshold Peof the erasing power based on the amplitude value in a region where the laser power is high. Then, the controller sets an optimal value of the erasing power from an average value of the first and second thresholds.

Optical disc recording apparatus and recording power control method

The present invention makes it possible to reproduce reproduction images without a break without having to use any additional identification information even when real-time recorded data is not completely continuous. A control circuit references a data identification flag ('Recording Type') which is attached to each sector of reproduction data to indicate the type of recorded data, and counts the number of sectors to which the data identification flag representing real-time recorded data is attached. When the count is not smaller than a threshold value, the control circuit reproduces all the sectors of the target reproduction block in a real-time reproduction mode. In the real-time reproduction mode, the control circuit masks a portion of reproduction data that is found to be defective, changes the value of the defective data to 0 (zero), and transfers the resulting reproduction data to a host device.

Optical disc apparatus and reproduction control method

A method for adjusting recording power of an optical disk apparatus having an output circuit that outputs recording light onto a test writing area of an optical disk, and a control circuit that adjusts the recording power of the recording light outputted from the output circuit, the method including the steps of causing the control circuit to erase a recording mark recorded onto the test writing area, to record a recording mark onto the test writing area in constant recording power lower than threshold power for starting a recording operation, and to record a recording mark onto the test writing area while changing the recording power.

Method for adjusting recording power and optical disk apparatus

An optical disc apparatus capable of improving an overwrite performance for performing an overwrite operation on a re-writable type optical disc. The apparatus includes a calculating section which calculates out a recording power at the time of previously performing recording in a recording area of the optical disc, and a recording power determining section which determines a write power of the recording power calculated out by the calculating section as a write power of the currently recorded recording power, and at the same time, adjusts erase power, cooling power, and/or middle power of the recording power calculated out by the calculating section to finally determine the currently recorded recording power.

Optical disc apparatus and method for controlling overwrite power

In a method for adjusting a focus position for an optical disc, onto/from which in formation is recorded or reproduced, while adjusting the focus position of an optical reproducing means, upon a recording surface of an optical information recording medium having an area where information of the optical information recording medium is recorded in advance, comprising the following steps of: memorizing plural numbers of information relating to focus positions determined appropriately, which can be obtained from the area where the information of the optical information recording medium is recorded in advance; and adjusting the focus position for the optical disc loaded into an apparatus, from at lease one (1) signal relating to the focus position, which can be obtained from the optical disc, with utilizing a relationship between the plural numbers of information relating to the focus positions determined appropriately, memorized in advance, when reproduction of the information is impossible when the optical disc is loaded into the apparatus, thereby providing the focus position adjusting method and an optical disc apparatus applying the same therein, for enabling an appropriate focus adjustment even in case when DMA area cannot read out due to damages or defects therein.

Method for adjusting a focus position on an optical disc and an optical disc apparatus applying the same therein

In the present invention, the processing sequence of a microprocessor for restructuring the recording parameters when changing the recording in an optical disk recording apparatus from a constant angular velocity (CAV) mode to a constant linear velocity (CLV) mode is as follows: (1) interrupt the recording process; (2) calculate a linear velocity at a point where the recording linear velocity becomes constant; (3) calculate a third recording parameter in the linear velocity by a linear interpolation based on first and second recording parameters which are corrected by test writing, replacing all the recording parameters for an outer circumference of an optical disk from a radius position where the linear velocity becomes Cx, with the third recording parameter; and (4) restart the recording with the third recording parameter as a recording condition.

Recording control method for optical disk recording apparatus and optical disk recording apparatus

Within an optical disk recording/reproducing apparatus, equipped with a test writing method during the recording operation, for improving accuracy on calculating the most-suitable power and recording quality, thereby recording data through irradiation of a laser beam of a predetermined power onto a optical disk, defining test writing areas on an inner periphery side and an outer periphery side and an area recordable with data between those inner periphery side and outer periphery side, or reproducing data recorded thereon from a reflection light thereupon, wherein a controller circuitexecutes a test writing process, with selecting a test writing area on a periphery side being large in a ratio of difference, upon basis of ratios of the differences between powers on an inner periphery and an outer periphery of said disk, which are set up at present, and control data on the inner periphery and the outer periphery, which are recorded on said optical disk loaded therein, when executing the test writing process for determining the predetermined laser power of the laser beam during executing a recording process within the apparatus.

Optical disk recording/reproducing apparatus and test writing method thereof

Means is provided that produces stabilized trial write results when, for example, servo misalignments are caused due to deviations on an optical disc that requires trial writes at high linear velocity. A recording method produces a recording parameter in the event of recording information into an arbitrary address position in the manner that a recording parameter is obtained through a predetermined calculation method from the results of learning of recording parameters on two or more zones of the optical disc where the linear velocities are different form one another. In a zone where the linear velocity is low, the method determines an optimal recording parameter from a jitter value of a reproduced signal waveform generated in a trial write. In a zone where the linear velocity is high, the method determines an optimal recording parameter in accordance with information obtainable from an amplitude value of a reproduced signal generated in a trial write.

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Saitama, Japan

Atsushi Yamada