Abstract: Provided is an information processing apparatus that effectively utilizes contexts and has the highly convenient messaging function, a method thereof and a terminal device used for message communication. The information processing apparatus includes a communication section and a control section. The communication section communicates a message between respective terminal devices used by a plurality of users. The control section acquires is a context of one or more users among the plurality of users, and controls at least one of creation or communication of message-related information including content or a format of the message on the basis of the acquired context.

Abstract: An information processing device includes an end portion candidate determination unit configured to determine a plurality of candidates for an end portion that is added to an end of a body and forms a message along with the body.

Abstract: Provided is a program causing a computer to function as an acquirer that acquires information indicating an exercise state of a user, a storage controller that allows the information indicating the exercise state acquired by the acquirer to be stored, and an output controller that allows provision information that is to be provided to the user to be output, the provision information being generated on the basis of a history of the information indicating the exercise state stored by the storage controller.

Abstract: Provided is a program causing a computer to function as an acquirer that acquires information indicating an exercise state of a user, a storage controller that allows the information indicating the exercise state acquired by the acquirer to be stored, and an output controller that allows provision information that is to be provided to the user to be output, the provision information being generated on the basis of a history of the information indicating the exercise state stored by the storage controller.

Abstract: [Object] To provide an information processing apparatus that effectively utilizes contexts and has the highly convenient messaging function, a method thereof, a program thereof, and a terminal device used for message communication. [Solving Means] The information processing apparatus includes a communication section and a control section. The communication section is configured to communicate a message between respective terminal devices used by a plurality of users. The control section is configured to acquire a context of one or more users among the plurality of users, and control at least one of creation or communication of message-related information including content or a format of the message on the basis of the acquired context.

Abstract: An optical communication device, for performing communication between spatially separated points by using one or more laser beams, includes an angle correction device that corrects a direction of a light receiving system and an emission optical axis correction device, in which an angle error which is not corrected by the angle correction device is detected by a light receiving angle detection device, and the emission optical axis correction device is controlled according to a detected error amount, and an emission optical axis is corrected.

Abstract: Provided is a program causing a computer to function as an acquirer that acquires information indicating an exercise state of a user, a storage controller that allows the information indicating the exercise state acquired by the acquirer to be stored, and an output controller that allows provision information that is to be provided to the user to be output, the provision information being generated on the basis of a history of the information indicating the exercise state stored by the storage controller.

Abstract: [Object] To propose a novel and improved program and information processing system that can perform feedback in accordance with a history of exercise of the user. [Solution] Provided is a program causing a computer to function as an acquirer configured to acquire information indicating an exercise state of a user, a storage controller configured to allow the information indicating the exercise state acquired by the acquirer to be stored, and an output controller configured to allow provision information that is to be provided to the user to be output, the provision information being generated on the basis of a history of the information indicating the exercise state stored by the storage controller.

Abstract: An optical communication device, for performing communication between spatially separated points by using one or more laser beams, includes an angle correction device that corrects a direction of a light receiving system and an emission optical axis correction device, in which an angle error which is not corrected by the angle correction device is detected by a light receiving angle detection device, and the emission optical axis correction device is controlled according to a detected error amount, and an emission optical axis is corrected.

Abstract: [Object] To propose a novel and improved program and information processing system that can perform feedback in accordance with a history of exercise of the user. [Solution] Provided is a program causing a computer to function as an acquirer configured to acquire information indicating an exercise state of a user, a storage controller configured to allow the information indicating the exercise state acquired by the acquirer to be stored, and an output controller configured to allow provision information that is to be provided to the user to be output, the provision information being generated on the basis of a history of the information indicating the exercise state stored by the storage controller.

Abstract: The present invention provides a time setting system and method thereof that are capable of correctly setting time if a delay occurs in the transmission of time information. In the system for setting a master time outputted from a master apparatus to a slave time of a slave apparatus that counts time independently of the master apparatus, the slave apparatus has transmission section for transmitting master time request information to the master apparatus via a network and the master apparatus has an allowable range information acquisition section for acquiring allowable range information indicative of an allowable time in which the master time may be set to the slave time of the slave apparatus and transmission section for transmitting the master time and allowable range information to the slave apparatus.

Abstract: An optical pickup includes a light source emitting a light beam, a diffraction element diffracting the light beam to separate it into a main beam and a sub beam, an objective lens focusing the main and sub beams onto a desired recording layer of an optical disc, a lens moving section moving the objective lens in focusing and tracking directions, a light-separating element separating a reflected light beam, formed by reflecting each of the main and sub beams at the recording layer, into multiple beam components and allowing the reflected light beam to travel without rotating an image thereof, and a light-receiving element having multiple light-receiving regions that optically receive the reflected light beam and generating a light reception signal based on the amount of received light to allow a signal processing section to generate a focus error signal and a tracking error signal based on the light reception signal.

Abstract: Provided is an optical pickup including: a light-source emitting a light-beam; an objective lens collecting the light-beam on a desired recording layer among one or two recording layers or more installed in an optical disc and where spirally- or concentrically-shaped tracks are formed; a lens-moving unit moving the objective lens in a tracking direction toward at least an inner-circumference or outer-circumference side; a light splitting device splitting a reflected light-beam into reflected light-beams and propagating the light-beams; a light-detecting device generating central, inner-circumference-side, and outer-circumference-side light-detecting signals according to received light amounts thereof by central, inner-circumference-side, and outer-circumference-side light-detecting areas, receiving central, inner-circumference-side, and outer-circumference-side portions of an image of the reflected light-beam in the radial direction and allowing a signal processing unit to generate a tracking error signal by

Abstract: Provided is an optical pickup including: a light-source emitting a light-beam; an objective lens collecting the light-beam on a desired recording layer among one or two recording layers or more installed in an optical disc and where spirally- or concentrically-shaped tracks are formed; a lens-moving unit moving the objective lens in a tracking direction toward at least an inner-circumference or outer-circumference side; a light splitting device splitting a reflected light-beam into reflected light-beams and propagating the light-beams; a light-detecting device generating central, inner-circumference-side, and outer-circumference-side light-detecting signals according to received light amounts thereof by central, inner-circumference-side, and outer-circumference-side light-detecting areas, receiving central, inner-circumference-side, and outer-circumference-side portions of an image of the reflected light-beam in the radial direction and allowing a signal processing unit to generate a tracking error signal by

Abstract: An optical pickup includes a light source emitting a light beam, a diffraction element diffracting the light beam to separate it into a main beam and a sub beam, an objective lens focusing the main and sub beams onto a desired recording layer of an optical disc, a lens moving section moving the objective lens in focusing and tracking directions, a light-separating element separating a reflected light beam, formed by reflecting each of the main and sub beams at the recording layer, into multiple beam components and allowing the reflected light beam to travel without rotating an image thereof, and a light-receiving element having multiple light-receiving regions that optically receive the reflected light beam and generating a light reception signal based on the amount of received light to allow a signal processing section to generate a focus error signal and a tracking error signal based on the light reception signal.

Abstract: An information recording/reproducing apparatus for recording and reproducing information to and from a magneto-optical storage medium that includes a first magnetic layer for recording at least information, a second magnetic layer for regulating a switched connective force, and a third magnetic layer for shifting a magnetic wall of recorded markings for information reproduction. The three layers being stacked on a transparent substrate to make up the storage medium. The information recording/reproducing apparatus includes an optical head and a magnetic head. The optical head has a light source and an objective lens, the light source is configured to emit at least a laser beam with a wavelength of about 780 nm, the objective lens having a numerical aperture of about 0.45 and is configured to focus the laser beam from the light source into a beam spot for emission onto the magneto-optical storage medium. The magnetic head is for applying a recording magnetic field to the magneto-optical storage medium.

Abstract: A device and a method for judging the radial moving direction of light spots formed on the signal recording surface of an optical disc having grooves of two types, which are different from each other in terms of depth and which are arranged along a recording track that is a land of the optical disc. The judging section of the device judges the moving direction of the main spot on the basis of binarized data of a difference signal of the main spot and binarized data of a difference signal of one of spots on the side. With this arrangement, the moving direction of the light spots relative to a radial direction of the optical disc can be determined only by using difference signals without using any sum signal.

Abstract: The present invention provides a time setting system and method thereof that are capable of correctly setting time if a delay occurs in the transmission of time information. In the system for setting a master time outputted from a master apparatus to a slave time of a slave apparatus that counts time independently of the master apparatus, the slave apparatus has transmission section for transmitting master time request information to the master apparatus via a network and the master apparatus has an allowable range information acquisition section for acquiring allowable range information indicative of an allowable time in which the master time may be set to the slave time of the slave apparatus and transmission section for transmitting the master time and allowable range information to the slave apparatus.

Abstract: A copyright management system that manages the time limits of the reproduction of a plurality of pieces of content in a batch manner. A content reproduction apparatus has a storage unit storing a reproduction permission ID list and the valid period information of each group ID and a reproduction control block for controlling the reproduction of content data attached with the group ID. The reproduction control block reads the group ID from content data and, if the read group ID is contained in the reproduction permission ID list and the current time is not in excess of the valid period of this group ID, permits the reproduction of the content data; if the read group ID is not contained in the reproduction permission ID list or the current time is in excess of the valid period of this group ID, the reproduction control block restricts the reproduction of the content data.

Abstract: The present invention is a magneto-optical disk adopting the magnetic domain wall displacement detection type ultra-high resolution playback method. The magneto-optical disk has a recording track whose width Tw given as Tw≦0.046×(&lgr;/NA), where &lgr; is a wavelength of a laser light which is irradiated to a magneto-optical disk to play back recorded signals recorded on the magneto-optical disk and NA is a numerical aperture. Thus, the detrack tolerance can be 160 nmpp or more, which is contributed to easier design of the disk drive tracking.