Abstract: In a content delivery system comprising a content information server, a content delivery server, and a terminal information server all located within a communications carrier network, the content information server obtains location information of a content requesting terminal from the location information server and generates a play list per terminal for inserting local CM content into main stream content depending on the terminal location. The content delivery server delivers the main stream content and the local CM content to the requesting terminal according to content identifiers specified in time sequential based on the play list per terminal by the content information server.

Abstract: An optical pickup with a simplified structure in which, according to the type of optical disc, diffracted light from three types of laser light can be directed efficiently onto a photodetector and appropriate focus control can be performed based on the signals detected by the photodetector, and a diffractive optical element that can be used in the optical pickup, which has a semiconductor laser 10 that can emit three types of laser light, a diffractive optical element 42 that diffracts the laser light reflected from the optical disc 31, and a single photodetector 43 that detects the diffracted light exiting the diffractive optical element 42.

Abstract: One of network classifications or line classifications is selected and used for one network function. A line classification selection server stores network function information including one or both of communication quality information of a network and billing information for each of network classifications of plural networks. The selection server receives a service start request from a service provider. The selection server refers to the network function information based on the network condition information included in the request, and selects a network classification satisfying the communication quality condition and/or the billing condition. The selection server transmits a server start request including service classification information and identification information of a user terminal to a 3PCC server of the selected network classification.

Abstract: A content control system capable of controlling delivery destinations of user contents in respective groups, identifying each group through which each content is delivered, and delivering information/advertisements according to the attribution information of the content. In a content control server, group identifying information is set in each user content to be uploaded to or downloaded from a group memory area corresponding to a gateway ID from a terminal through a gateway having a plurality of its subordinate terminals. The information identifies each gateway through which each object content is delivered according to the gateway ID. The control system controls the delivery destination of each content according to the combination of the content delivery route and a table prepared in the content control server.

Abstract: Even when a site of the Internet is used, switching is automatically performed to a connection via NGN, and a service via the NGN is provided to a user terminal. A HGW transmits a request from the user terminal in accordance with a destination address to a redirect server and a service provider server through one of an IP network and an NGN network. The redirect server redirects access to the service provider server via the IP network to access via the NGN network. The user terminal accesses one of communication devices of the service provider server through the IP network, and communication with the service provider server is performed through the NGN network based on address information of a redirect destination from the redirect server.

Abstract: A laser emitting device (9) includes a light emitting portion (4) that emits light of a wavelength ?1 (approximately 405 nm), a light emitting portion (5) that emits light of a wavelength ?2 (approximately 650 nm), and a light emitting portion (6) that emits light of a wavelength ?1 (approximately 780 nm). The light emitting position of the light emitting portion (4) and the light emitting position of the light emitting portion (6) are approximately on the same position as seen in the direction of an optical axis of emitted light of the laser emitting device (9). An optical axis adjusting element (18) is provided for adjusting an optical axis of return light of at least one of the wavelengths among return lights of the wavelengths ?1, ?2 and ?3 so that respective return lights emitted by the light emitting portions (4, 5 and 6) of the laser emitting device (9) and reflected by an optical recording medium (16) are received by a common light detector (20).

Abstract: A peer-to-peer file sharing system includes software components for providing and maintaining a virtual directory in a server system component of the file sharing system. Client system components of the file sharing system cooperate with the server system to facilitate manipulations to the virtual directory.

Abstract: The selection of video content to be delivered to a video reproducing terminal is enabled from a communication terminal with WEB function without exposing a user ID. When a terminal makes a transfer request of content data, a web server requests a delivery management server for a transfer ID. The delivery management server issues the transfer ID each time the request is made and transmits it to the web server. The web server transmits the content data to a delivery server. The delivery server stores the content data from the web server correspondingly to the transfer ID. When receiving a delivery request including a transfer ID inputted to a video reproducing terminal from the video reproducing terminal, the delivery server reads the content data corresponding to the received transfer ID, and transmits it to the video reproducing terminal.

Abstract: [Problem] An objective is to provide an optical pickup device, for recording on or reproducing from optical medias enable to use for the light beams with plural kind of wavelength, in which plural light beams reflected by the optical medium can be detected by a common photo detector.

Abstract: In a cache control assuming plural user terminals accessing identical content, cache delete priority assignment is performed from a position where a user finished playback based on whether the user intends to view the content later. A cache control server is provided, and a cache delete inhibit span is determined based on a playback stop position or a normal speed playback time. A cache server deletes the cache based on the delete inhibit span received from the cache control server. Traffic of the core network due to re-cache can thus be reduced.

Abstract: A diffractive optical element whose two diffraction gratings diffract three different wavelength light beams is provided. The diffractive optical element includes a first diffraction grating and a second diffraction grating that is located opposite the first one, and is configured in such a way that, among three different wavelength incident light beams, the diffraction efficiency in one light beam diffracted on the first diffraction grating is a predetermined value or less, and the diffraction efficiencies in the other two different incident light beams diffracted on the second diffraction grating are predetermined values or less. This arrangement can achieve a diffractive optical element capable of diffracting the three different wavelength light beams in a simple configuration.

Abstract: A laser emitting device (9) includes a light emitting portion (4) that emits light of a wavelength ?1 (approximately 405 nm), a light emitting portion (5) that emits light of a wavelength ?2 (approximately 650 nm), and a light emitting portion (6) that emits light of a wavelength ?1 (approximately 780 nm). The light emitting position of the light emitting portion (4) and the light emitting position of the light emitting portion (6) are approximately on the same position as seen in the direction of an optical axis of emitted light of the laser emitting device (9). An optical axis adjusting element (18) is provided for adjusting an optical axis of return light of at least one of the wavelengths among return lights of the wavelengths ?1, ?2 and ?3 so that respective return lights emitted by the light emitting portions (4, 5 and 6) of the laser emitting device (9) and reflected by an optical recording medium (16) are received by a common light detector (20).

Abstract: In a similar face retrieval system for retrieving an image photographing a face similar to a face detected from a retrieval query image from a retrieval target image group by using an image photographing a human face as the retrieval query image, whole image features as features representative of background information are extracted from each whole area of an each image of a retrieval target image group, to calculate a degree of similarity through comparison with each set of whole image features, and an image having a degree of similarity not lower than a certain value and having a lower retrieval result order from retrieval results. It is possible to efficiently retrieve the same person playing in different scenes by utilizing different features for a retrieval process and a filtering process.

Abstract: Disclosed embodiments of the present invention include a peer-to-peer network comprising management server and a notification server. Information of interest can be subscribed to by peer clients. The notification server can then notify subscribing peer clients of modified information. A pure peer-to-peer architecture is also disclosed.

Abstract: A core network that includes a number of relay nodes and edge nodes, intercoupled by network links, interconnects a plurality data transfer entities through gateway elements. Each gateway element is allocated a portion of the data communicating (QoS) resource of certain of the links, and maintains information of that allocation. When a gateway receives a request for a data transfer from a data transfer entity with a particular communicating resource requirement, it will check its associated information to determine of the allocated resource is sufficient. If not, the gateway may ask for a reconfiguration of resources that re-allocate communicating resource from one gateway element to the asking gateway element.

Abstract: An optical-pickup-adjustment optical disk used for adjusting or producing an optical pickup device, includes a transparent protective substrate; and an optical-pickup-adjustment middle-depth information recording layer formed on a side of an inside surface of the transparent protective substrate, wherein the optical-pickup-adjustment middle-depth information recording layer is formed to have a middle depth which is a center of the maximum depth of the maximum-depth information recording layer prescribed by the optical disk standard and the minimum depth of the minimum-depth information recording layer prescribed by the optical disk standard.

Abstract: A scheme and a device for managing a user state and a plurality of terminal states on a presence server, and for automatically selecting an optimum terminal by using both the user state and the terminal states. Priority degrees which depend on the terminal states are set, then selecting a terminal whose priority degree is the highest of the plurality of terminals. In association therewith, a priority rank which is set depending on the user state is also taken into consideration, thereby selecting a final optimum terminal. The present scheme makes it possible to automatically perform a fine-grained selection of the optimum terminal in which both the terminal states and the user state are taken into consideration.

Abstract: A traffic information aggregating apparatus (hereinafter an aggregating apparatus) receives traffic information from a network apparatus. The aggregating apparatus generates aggregated data in which the traffic information for each previously determined aggregation time is aggregated, and stores the aggregated data into an aggregated data management table correspondingly to an aggregation identifier. The aggregating apparatus determines, at the interval of the aggregation time, whether a difference between the aggregated data and a base value is within a previously determined range, and accumulates, in the case where it is within the range, the aggregated data to corresponding accumulated data of the aggregated data management table, and resets the aggregated data. In the case where it exceeds the range, the aggregating apparatus exports the aggregated data and/or the accumulated data of the aggregated data management table to the monitor server.

Abstract: A file sharing system for managing both P2P type and C/S type shard files, wherein a management server accepts from each client a file registration request and a file access request for not only a P2P type shared file, but also a C/S type shared file, and each client executes a subsequent procedure for storing or accessing a shared file according to an acknowledgement response from the management server.

Abstract: Provided is a network system including a traffic information aggregating apparatus connected to a router for transferring data in a network, and a monitor server connected to the traffic information aggregating apparatus. In the network system, the traffic information aggregating apparatus receives traffic information from the router, assigns an aggregation identifier to the received traffic information, creates aggregated information by aggregating the traffic information based on the assigned aggregation identifier and by statistically processing the traffic information, transmits the created aggregated information and the assigned aggregation identifier to the monitor server, and retrieves, upon reception of a retrieval request including the aggregation identifier from the monitor server, requested traffic information from the received traffic information, based on the aggregation identifier included in the received retrieval request.