Abstract: A first thermal buffer layer and a second thermal buffer layer are arranged between a recording medium and an actuator structure. The heat conductivity of the first thermal buffer layer is set low and the heat conductivity of the second thermal buffer layer is set high. Most of the heat generated from a coil wiring of the actuator structure is blocked by the first thermal buffer layer, and heat leaked from the first thermal buffer layer is diffused by the second thermal buffer layer. Temperature distribution on the recording medium is made uniform, and thus, a configuration wherein the recording medium and the actuator structure are placed one over another can be provided, information reading accuracy or information recording stability can be improved and the sizes of an information storage device can be reduced.

Abstract: In a two-dimensional probe array, an interval between the leading ends of probes adjacent to each other in an X direction is made shorter than that between the leading ends of probes adjacent to each other in a Y direction. Thus, the leading ends of the probes are arranged to form a lattice wherein many rectangles are arranged. Furthermore, the lowest resonance frequency of an actuator which moves a recording medium in the X direction is set higher than the lowest resonance frequency of an actuator which moves the recording medium in the Y direction. At the time of recording or reading information, the recording medium is reciprocated in the X direction at a frequency substantially equal to the lowest resonance frequency of the actuator.

Abstract: A transmitter, a communication system, and a communication method of the same capable of realizing communication of more than a set bandwidth with respect to packet communication with a bandwidth guarantee set therefor by using the set bandwidth as the minimum guaranteed bandwidth, wherein when a transmitter transmits packet data, it decides whether or not packet communication guarantees a bandwidth based on a guaranteed bandwidth set in advance and, when guaranteeing the bandwidth, adds a first identifier to the packet data, while when not guaranteeing the bandwidth, adds a second identifier to the packet data and transmits the same to the network and wherein a relay unit connected to the network decides, in accordance with identifiers registered in advance and guaranteed bandwidths corresponding to same, whether or not the received packet data are bandwidth guaranteed, adds the first or second identifier to the packet data in accordance with the result of the decision, and transfers them to the next relay u

Abstract: A position control area (76A) is partly formed in the recording area (75) of a recording medium (70) and position information is recorded only in the position control area (76A). To record data in the recording medium (70) by a head (60) having a plurality of cantilevers (62A), (62B), . . . , the position information is read by the cantilever (62E) corresponding to the position control area (76A) and, based on the position information, the positioning control or moving control of all the other cantilevers is performed.

Abstract: A transmitter, a communication system, and a communication method capable of realizing communication of more than a set bandwidth with respect to a packet communication with a bandwidth guarantee set therefore by using a set bandwidth as the minimum guaranteed bandwidth, wherein when a transmitter transmits packet data, it decides whether or not packet communication guarantees a bandwidth based on a guaranteed bandwidth set in advance, and adds a first identifier to the packet data when guaranteeing bandwidth, and adds a second identifier when not guaranteeing the bandwidth.

Abstract: A transmitter, a communication system, and a communication method capable of realizing communication of more than a set bandwidth with respect to a packet communication with a bandwidth guarantee set therefore by using a set bandwidth as the minimum guaranteed bandwidth, wherein when a transmitter transmits packet data, it decides whether or not packet communication guarantees a bandwidth based on a guaranteed bandwidth set in advance, and adds a first identifier to the packet data when guaranteeing bandwidth, and adds a second identifier when not guaranteeing the bandwidth.

Abstract: A transmitter, a communication system, and a communication method capable of realizing communication of more than a set bandwidth with respect to a packet communication with a bandwidth guarantee set therefore by using a set bandwidth as the minimum guaranteed bandwidth, wherein when a transmitter transmits packet data, it decides whether or not packet communication guarantees a bandwidth based on a guaranteed bandwidth set in advance, and adds a first identifier to the packet data when guaranteeing bandwidth, and adds a second identifier when not guaranteeing the bandwidth.

Abstract: A transmitter, a communication system, and a communication method capable of realizing communication of more than a set bandwidth with respect to a packet communication with a bandwidth guarantee set therefore by using a set bandwidth as the minimum guaranteed bandwidth, wherein when a transmitter transmits packet data, it decides whether or not packet communication guarantees a bandwidth based on a guaranteed bandwidth set in advance, and adds a first identifier to the packet data when guaranteeing bandwidth, and adds a second identifier when not guaranteeing the bandwidth.

Abstract: In order to easily and promptly make a connection to a station which a user desires and in a good communication condition, there is provided a communication apparatus applicable to a PDA having a wireless communication function, which includes setting means for setting a priority order of wireless communication stations, acquisition control means for controlling acquisition of RSSI (Receive Signal Strength Indication) of each of the stations, and connection control means for controlling a connection to one of the station having a highest priority order among the stations whose RSSI exceeds a predetermined threshold.

Abstract: This signal detection method detects an output signal indicating data information contained at least in two sideband waves from an input signal having a carrier and at least two sideband waves accompanying the carrier. The method includes a cut off step for cutting off a sideband wave positioned at the high frequency side or the low frequency side as compared to the carrier from the at least two sideband waves and a square detection step for outputting an output signal by performing square detection of an input signal having one of the sideband waves which has been cut off.

Abstract: An information processing apparatus for receiving broadcast data and outputting the received data to a client connected to a network includes a broadcast receiving unit that receives broadcast data; an encryption processor that performs encryption processing on the broadcast data received by the broadcast receiving unit; a data accumulation unit that accumulates encrypted data generated by the encryption processor; a data transmission unit that generates a communication packet in which encrypted data accumulated in the data accumulation unit is stored and outputs the generated communication packet; and a transmission data controller that monitors a retained state of the encrypted data in the data accumulation unit and removes, if a state different from a predetermined allowable retained state is detected, at least part of the encrypted data accumulated in the data accumulation unit from transmission data.

Abstract: Position information is formed on a recording surface of a recording medium. The position information is constructed from first line segments, which are parallel to each other, and a second line segment, which crosses the first line segments. On the basis of a distance between (i) an intersection of one of the first line segment and a scan line and (ii) an intersection of another of the first line segments and the scan line, the intersection and an intersection of the second line segment and the scan line are measured or calculated. By this, a position of a head is recognized.

Abstract: The data to be recorded onto a recording medium is directly spread and then recorded onto the recording medium through a needle-shaped member, such as a probe. Upon reproducing the data, the data read from the recording medium is de-spread and reproduced.

Abstract: A recording medium (100) on which record information is recorded, wherein the recording medium is displaced relatively with respect to a recording/reproducing device (60) for performing at least one of recording and reproduction of the record information, along each of one direction (X-axis) and another direction (Y-axis), and a track (120) which is a guide in recording the record information is formed such that a relative displacement direction of the recording/reproducing device due to the at least one of recording and reproduction of the record information is distributed substantially uniformly in both the one direction and the another direction.

Abstract: A content sharing system includes a plurality of client stations, each including a content acquiring unit, and one or more content management servers that manage a plurality of content items. The content management server includes a storage unit that stores meta data of the content items, a tree structure generating unit that generates a tree structure including a plurality of containers arranged in hierarchical levels, each container having an identifier representing a type of content assigned thereto, a content allocating unit that allocates the content items to the containers on the basis of the meta data and the identifiers, and a content presenting unit that presents the tree structure having the content items allocated thereto to the client station. The content acquiring unit acquires the tree structure from the content management server and acquires the one or more content items from the content management server using the acquired tree structure.

Abstract: A dielectric reproducing apparatus is provided with: a probe for applying an electric field to a dielectric material of a dielectric recording medium; a return electrode for returning the electric field applied from the probe; an inductor placed between the probe and the return electrode; an oscillator which oscillates at a resonance frequency determined from the inductor and a capacitance formed in the dielectric material just under the probe; an alternating current (AC) signal generation device for generating an AC signal which is applied to the probe; a frequency modulation (FM) demodulator for demodulating a FM modulation signal modulated by the capacitance corresponding to the polarization state owned by the dielectric material just under the probe; and a phase-shift keying (PSK) demodulator for reproducing data from the demodulated signal.

Abstract: A probe (100) is provided with: a substrate (110) having a surface facing a medium (20); and a point electrode (120), formed in the substrate, for performing at least one of detection operation of a state of a domain of the medium and change operation of the state of the domain of the medium, a tip portion, which is an edge portion on a side facing the medium, out of the point electrode being disposed in one point in a plane which is formed in a vicinity of an area portion in which the point electrode is formed by the surface.

Abstract: A recording/reproducing head is provided with: a substrate which has a predetermined width and a predetermined thickness and which is long in one direction; a probe disposed on one end in the longitudinal direction of the substrate; a lead wire disposed on a surface of the substrate provided with the probe thereon, i.e. the lead wire disposed on a surface facing to the dielectric recording medium; and an electric conductor, i.e. a return electrode, disposed so as to surround the probe and the lead wire. The probe is covered with a conductive film as well as connected with the lead wire. Via the lead wire, a signal for recording is inputted from an external device or a signal for reproducing is led to an external device.

Abstract: The dielectric recording medium is provided with a dielectric material, a conductive thin film, and a substrate. The conductive thin film and the substrate are bonded by a resin adhesive. The dielectric material is constructed of a ferroelectric single crystal having a uniform thickness, and its one surface is used for a recording and/or reproducing surface, on the order of mm on a side and about 5000 ? thick. The conductive thin film, about 1000 to 2000 ? thick, is placed on a surrounding portion and a back surface of the recording and/or reproducing surface of the dielectric material. The substrate is intended to preserve the thin dielectric material and maintain the planarity, and concave portions are formed on the adhesive surface. The concave portions absorb excessive resin adhesive when the dielectric material is bonded onto the substrate, which makes the adhesive surface uniform and flat.

Abstract: In an application layer, time txn necessary for packet transmission is calculated, and a packet pkn is transferred together with the time txn for packet transmission to the device driver of a data link layer. Then, in the data link layer, the amount of data is controlled based on the time transferred together with the packet. Thus, the amount of data transmitted per unit time from a transmission terminal on a packet network to the network can be controlled.