Abstract: A diffraction display device includes a diffraction optical element that comprises a diffraction display portion and a non-display portion disposed between a pair of substrates, and an illuminating device that emits linearly polarized illuminating light to be incident on a side surface of the diffraction optical element. In the diffraction display device, the illuminating light having entered the diffraction optical element exits the diffraction optical element through a substrate surface at which the diffraction display portion is disposed.

Abstract: A fiber optic communication system comprising: an optical signal source adapted to receive a binary base signal having a bit period T, and generate a first signal, wherein the first signal is frequency modulated; and an optical spectrum reshaper (OSR) adapted to reshape the first signal into a second signal, wherein the second signal is amplitude modulated and frequency modulated; characterized in that: the frequency excursion of the first signal is adjusted such that the frequency excursion is substantially equal to the ratio of the bit period of the digital base signal to total dispersion of the transmission fiber, whereby to increase the tolerance of the second signal to dispersion in a transmission fiber.

Abstract: A control apparatus with a balance feedback function includes a direction control module for outputting several direction signals of different directions; an operation control module outputting several control signals of different operations; a balance control module for detecting the control apparatus and presetting a tilting angle between horizontal planes to generate a horizontal shift vector signal or detecting a vertical shift in the vertical direction of the control apparatus to generate a corresponding vertical vector signal; a processing module coupled to the balance control module for receiving the direction signal to produce a corresponding direction data, for receiving the operation control signal to produce a corresponding operation control data, for receiving the horizontal shift vector signal to produce a horizontal vector data, and for receiving the vertical vector signal to produce vertical vector data; and a transmission module provided for transmitting any one of the data to an electronic de

Abstract: A silicon carbide semiconductor device includes: a semiconductor substrate having a silicon carbide substrate, a first semiconductor layer, a second semiconductor layer, and a third semiconductor layer; a trench penetrating the second and the third semiconductor layers to reach the first semiconductor layer; a channel layer on a sidewall and a bottom of the trench; an oxide film on the channel layer; a gate electrode on the oxide film; a first electrode connecting to the third semiconductor layer; and a second electrode connecting to the silicon carbide substrate. A position of a boundary between the first semiconductor layer and the second semiconductor layer is disposed lower than an utmost lowest position of the oxide film.

Abstract: Briefly, in accordance with one embodiment of the invention, an ad-hoc network comprises nodes. A sub-set of the nodes provides a backbone for communication between nodes in the ad-hoc network. At least some of the nodes in the backbone are selected to be a router based at least in part on a metric of the node.

Abstract: A program execution data trace is created by instrumenting a program to record value sets during execution and an instruction trace. By simulating instructions either backward or forward from a first instruction associated with a recorded value set to a second instruction according to the instruction trace, a value set is determined for the second instruction. Backward and forward simulation can be combined to complement each other. For backward simulation, a table of simulation instructions is preferably maintained, which associates program instructions encountered in the instruction trace with simulation instructions which reverse the operation of the associated program instructions. Preferably, one or more probes is inserted into the program to save values of particular variables whose value may be difficult to determine. Preferably, the instruction trace is displayed alongside and correlated with the data trace.

Abstract: In measurement of wireless channels in an IEEE 802.11 wireless local area network (WLAN), in the case of multi-channel measurement as in North America in which eight wireless channels Ch1 through Ch8 are available, channel measurement according to a predetermined algorithm is made in which odd-numbered channels Ch1, Ch3, Ch5 and Ch7 are first measured, and if radio interference occurs in channel Ch5, channels Ch4 and Ch6 adjacent to channel Ch5 are measured. This shortens the measurement time that conventionally corresponds to measurement of the eight channels to the time of six channels, i.e., the sum of the measurement time for the odd-numbered channels and that for the channels adjacent to the interference-occurring channel.

Abstract: A camera apparatus includes a base; an outer case assembled on the base; an inner case assembled in the outer case; a supporting member assembled in the inner case; a camera and a board assembled in the supporting member; a cooling fan for cooling the board, and so forth. The cooling fan is provided in the inner case to blow cooling air over the board. An air inlet is located on an air intake side of the cooling fan, whereas an air outlet is located in an extension of an air discharge side of the cooling fan along the board.

Abstract: Provides a data processing system comprising a processor and encrypted information in a first persistent memory whose level of information leakage is higher than that of a second persistent memory. The second persistent memory stores a cryptographic key for decrypting the encrypted information, generating therefrom unencrypted information that is usable by the processor for executing an operation. The cryptographic key may be used for encrypting the unencrypted information, generating the encrypted information. Also provided is a method of processing such a data-processing system with an operating system, comprising writing unencrypted information into the first persistent memory, encrypting the unencrypted information under use of the first cryptographic key, creating therefrom encrypted information in the first persistent memory, and setting the data-processing system to a state in which writing into the first persistent memory is controlled by the operating system.

Abstract: A method and apparatus for controlling data flow across a network performs a method which includes transmitting a packet request message from a first station to a second station, then determining if the packet request message is valid. A request acknowledge message is transmitted from the second station to the first station, and it is then determined if the request acknowledge message is valid. The packet request message and the request acknowledge message each includes a control bit string, an identification bit string, and at least one parity bit.

Abstract: Embodiments of the present invention are related in general to data flow control in a network and in particular to synchronous packet flow control in a ring interconnect. An embodiment of a method may include rejecting an arriving packet at a destination node on a semiconductor chip's ring interconnect, e.g., an unbuffered, synchronous ring interconnect, if all of the destination node's buffers are not available, leaving the rejected packet on the ring interconnect to continue traversing the ring, and accepting the rejected packet upon arrival at the destination node, if a buffer is available. In an alternate embodiment, a method may include tracking the rejected packet as the rejected packet traverses the ring interconnect. An embodiment of an apparatus may include a semiconductor chip having a bidirectional ring interconnect and multiple nodes coupled to the bidirectional ring interconnect.

Abstract: A retention device is applied in an electronic device that has a case and a circuit board. The circuit board may shifts along a integrate direction or a release direction. The retention device includes a fastener, a latching member, and a releasing member. The fastener is movably disposed on the case and has a stopping portion. The latching member is disposed on one side of the circuit board. The releasing member is movably disposed on the case and is located on one side of the fastener, and pushes the fastener to shift. The latching member shifts along the integrate direction with the circuit board, pushes the fastener to shift, and is blocked by the stopped portion. When the fastener is pushed by the releasing member to shift, the latching member is separated along the release direction, such that the circuit board is fixed on or detached from the case.

Abstract: An optical module. The optical module includes a printed circuit board and an opto-chip. The opto-chip includes a transparent carrier with an optoelectronic device array and an associated integrated circuit array that are flip chip attached to the transparent carrier. The optoelectronic device array and the associated integrated circuit array are interconnected via surface wiring with bond sites. In addition, the associated integrated circuit array extends beyond the transparent carrier to provide direct flip chip attachment of the opto-chip to the printed circuit board.

Abstract: Priority binding enables a one-to-many mapping of a target to a source without requiring complex code development by the specification of one or more binding statements. During runtime, these bindings are evaluated. The highest priority binding that evaluates successfully is executed, controlling the two-way transfer of information between source and target. During execution, all possible data binding pathways are monitored. If a binding that has a higher priority than the existing binding evaluates successfully, the existing binding is terminated and the new binding is executed.

Abstract: A core adapter formed as a hollow cylindrical sleeve. A plurality of apertures extend through the sleeve, parallel to the sleeve's longitudinal axis. A plurality of radial apertures are formed in the sleeve for each longitudinal aperture. Each radial aperture is perpendicular to sleeve's axis and intersects a longitudinal aperture. Studs are provided in each radial aperture, initially recessed beneath the sleeve's outer surface. The sleeve's outside diameter is sized for insertion into a 6-inch inside diameter core. The sleeve's inside diameter is the same size as a 3-inch inside diameter core. The adapter is inserted into a 6-inch core until it is flush with the end of the core. Wedge-tipped bars are driven into each of the adapter's longitudinally aligned rows of studs, and against the bottom of each stud, thereby driving the studs perpendicularly away from the sleeve's axis into the core.

Abstract: In a holographic digital data storage system, a light source generates a reference beam, a holographic optical element saves a plurality of interference patterns between the reference beam and a plurality of beams of specific sizes and a beam splitter splits each reproduced beam into a holographic signal beam and a holographic reference beam. A medium records an interference pattern between the holographic reference beam and the holographic signal beam and reflecting the holographic reference beam to generate a reflective information beam and, if only the holographic reference beam is illuminated, a displaying means displays a holographic reproduced beam for the holographic signal beam and detecting the reflective information beam.

Abstract: The single-lens reflex camera body is provided with: a detector that detects which of a first lens unit or a second lens unit is attached; a rotation operator which accepts a rotating operation to adjust a diaphragm value of the lens unit attached to the camera body; and a controller which transmits the diaphragm value that is adjusted at the rotation operator to the lens unit attached to the single-lens reflex camera body, and having a configuration where an operating direction of the diaphragm ring when a rotating operation is performed at the diaphragm ring to adjust the diaphragm value is the same as an operating direction of the rotation operator when the rotating operation is performed at the rotation operator. Thereby, the diaphragm value can be set easily.