Sony Corporation

Toshihisa Iriyama

Yujiro Ito

Kazuhiko Otsuka

Kiyohiko Miyahara

Koji Inoue

Hiroki Matsui

Takashi Nagatomo

Hidehiro Kawaguchi

Takahiro Araki

Hideyuki Nakamuro

Provided is a recording apparatus including a light radiating unit that radiates light to an optical recording medium, a recording unit that performs light emission control of the light radiating unit, and performs recording on the optical recording medium, and a control unit that controls the recording unit in a manner that recording of remaining data starts from a position over a defect occurrence area, according to occurrence of a defect, in a state in which a logical address space and a physical address space are defined with respect to a recording area of the optical recording medium, and controls the recording unit in a manner that, when the buffer area is consumed and data is not completely recorded, a recording area of the remaining data that is not completely recorded is replaced with the spare area and the remaining data is recorded on the spare area.

Recording apparatus, and recording method

A recording apparatus includes a recording unit that performs a recording operation to each layer by performing laser light illumination to a recording medium which has (n+1) or more layers as a recording layer and in which a test writing area of each layer is formed between at least n consecutive layers and at a position in which the test writing areas are not overlapped with each other when seen from a laser light incident surface side, and a controller that sets the n consecutive layers to be a recording target layer in the recording operation including a test writing for laser power adjustment and causes the recording unit to execute the recording operation to the n recording target layers, wherein n&#x2267;2.

Recording apparatus, recording method and recording medium

A recording device includes a plurality of channels configured to record data to an optical recording medium, a reception unit configured to receive data transmitted from an external device, a storage unit configured to temporarily store the data that is received by the reception unit, and a distribution control unit configured to read the data that is stored in the storage unit and distribute the data by a block unit to the plurality of channels based on transfer time of the data and recording time to the optical recording medium so that record processing of the plurality of channels are simultaneously ended.

Optical recording device and recording method

Disclosed herein is a medium drive apparatus connected to an information processing apparatus for performing recording and reproduction on and from a recording medium in accordance with a request from the information processing apparatus, which may include an inputting and outputting section configured to record and reproduce data on and from a recording medium, and a control section configured to execute a first operation process as a reproduction only mode, a second operation process as a recording and reproduction mode, an authentication process with the information processing apparatus, and a mode changing process of changing the operation mode from the reproduction only mode to the recording and reproduction mode in response to success in the authentication by the authentication process thereby to control the recording operation and the reproduction operation of the inputting and outputting section.

Medium drive apparatus, operation method for medium drive apparatus, information processing apparatus, recording and reproduction accessing method for information processing apparatus, program, and program recording medium

A driving device includes: n pickups; n first control means for respectively controlling the pickups; and a second control means for controlling the n first control means so as to divide data into n pieces of data and to write divided data on a predetermined disc through the n pickups, wherein, when a notification that defect is detected is received from at least one first control means from among the n first control means while data is being written on the disc, the second control means determines a replacement destination, notifies information regarding the replacement destination to the n first control means, and determines the replacement destination in a region where data is continuously read at the time of reproducing of the disc.

Driving device and method, program, and recording medium

A recording or reproduction apparatus is disclosed which optimizes a standby state for recording or reproduction of a cartridge disk and can achieve rapid restoration of recording action upon ejection. A shutter close mode wherein a recording medium in a cartridge recording medium is not driven by a driving section and a shutter mechanism is closed can be maintained as one of modes during a loading process of the cartridge recording medium to achieve a dust preventing effect, a collision preventing effect with a head and a power saving effect while the cartridge recording medium is in a standby state. If a request to discharge the cartridge recording medium is issued, then the successive changeover from a drive on mode to a drive off mode shutter close mode eject mode is controlled using individual commands for the modes.

Recording or reproduction apparatus

An optical axis correcting apparatus for correcting the optical axes of light beams from a communicating party in an optical space transmission system that transmits and receives the light beams to/from the communicating party, comprises, in order to further accurately correct an optical axis with a simple configuration, optical axis changing means for changing the angle of a reflecting mirror placed in the optical path of the light beam and for changing the optical axis of the light beam to be reflected by the reflecting mirror, optical axis direction detecting means for detecting the direction of the optical axis of the light beam that is changed by the optical axis changing means, optical axis adjusting means for adjusting the angle of the reflecting mirror based on the direction of optical axis of the light beam detected by the optical axis direction detecting means through the optical axis changing means in order to adjust the direction of the optical axis of the light beam toward the communicating party, and correction means for detecting a change of angle occurred in the reflecting mirror owing an oscillation applied to the reflecting mirror and for correcting the angle of the reflecting mirror based on the detected result.

Optical axis correcting apparatus and method of correcting optical axis

In an optical axis correction device for correcting an optical axis within an optical spatial transmission device, a displacement of focal point can be prevented and a responding speed in rotation of the mirror can be made fast. As the incident light is reflected against the reflection surface of the mirror and radiated against the position sensing sensor, a displacement amount .DELTA.S between the incident point P1 on the position sensing sensor and the reference position P0 is detected at the optical axis correction device. In order to correct the optical axis only by the amount of displacement .DELTA.S, the Y-axis driving mechanism is driven to change an angle of the reflection surface of the mirror. At this time, the position of the reflecting portion on the reflection surface in a direction of Z-axis is prevented from being displaced. For example, a driving force of '-2' is applied to the first Y-axis driving mechanism and concurrently a state of '.+-.0' is held at the second Y-axis driving mechanism. With such an arrangement as above, it is possible to rotate the mirror in the same direction and by the same amount only as those of the case in which the driving force '-1' is applied to the first Y-axis driving mechanism and the driving force '+1' is applied to the second Y-axis driving mechanism without being displaced in a direction of the Z-axis.

Optical axis correction device

Disclosed is an optical axis correcting device which allows high accuracy optical axis adjustment and which has an excellent responsiveness. An optical communication device suited for long distance optical communication using this optical axis correcting device is provided. A two-axis spring for setting a mirror includes a first annular section, a second annular section on the outer side of the first annular section and concentric thereto, and a third annular section on the outer side of the second annular section and concentric thereto, wherein the first annular section and the second annular section are connected together by a pair of X-axis bridges which allow torsional rotation and which are opposed to each other with the center of the concentric circle therebetween, wherein the second annular section and the third annular section are connected together by similar Y-axis bridges. The X-axis bridges and the Y-axis bridges are arranged at a predetermined angle by using the center of the concentric circles as a reference, and are arranged so as to exhibit the same angle with respect to the rolling direction of the rolled members forming the two-axis spring using the center of the concentric circles as a reference.

Mirror holder and optical axis correcting device using the same

An optical atmospheric link device which is adapted to quickly correct the incident position of a light beam with high follow-up accuracy. Incident position detection signals are generated by an optical beam incident position detector in correspondence to the incident position of a first optical beam. The incident position detection signal along with a reference incidence position signal, are utilized to generate incident position correcting signal. The incident position correcting is utilized to move a lens to quickly correct the incident position in a small amplitude mode. Furthermore, a displacement detection signal is generated which corresponds to the displacement of the lens. The displacement detection signal and the incident position correcting signal are utilized to move a pair of mirrors to slowly correct the incident position in a large amplitude mode.

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Kanagawa, Japan

Toshihisa Iriyama