Abstract: The invention provides an apparatus for testing input/output (I/O) interface in a computer system. The apparatus is capable of testing the I/O interface under real distance condition. The apparatus communicates with a first I/O interface in the computer system via a signal medium. The test apparatus includes a memory means, a clock generator for outputting a clock signal, an I/O interface communicating with the first I/O interface in the computer system via the signal medium, and a controller connected to the I/O interface. The controller operates synchronously with the clock signal for writing data transmitted from the I/O interface into the memory means, or reading out the data from the memory means and then transmitting the data to the first I/O interface through the I/O interface when a predetermined condition becomes effective.

Abstract: The present invention relates to an optical short pulse generator using an EA modulator. In addition to continuous wave light for generating an optical short pulse train, pump light for generating a pile up is injected into this EA modulator. Generating a pile up increases the number of photo-carriers which accumulate in the light absorption layer without being swept out to the clad layer, and this increases the change in the light absorption quantity when a sinusoidal electric field is applied to the EA modulator. The EA modulator in accordance with the present invention has excellent extinction characteristics so that it can generate an optical short pulse train whose loss is small and pulse width is very small. According to one preferred embodiment of the present invention, the pump light is injected into the light absorption layer of the EA modulator, not from the end face where continuous wave light is injected, but from the end face where the optical short pulse train is emitted.

Abstract: A semiconductor device test apparatus (a coupling device thereof) includes a circuit board 103 and film 105. A plurality of electrodes 103c are formed at the circuit board 103 at positions that face opposite a plurality of electrodes 201a at a device to be measured 201, whereas bumps 105b are formed at the surface of the film 105 located toward the device to be measured 201, at positions that face opposite the plurality of electrodes 201a at the device to be measured 201 and electrodes 105c are formed at the surface of the film 105 located toward the circuit board 103 at positions that face opposite the plurality of electrodes 103c at the circuit board 103. The bumps 105b formed at one surface of the film 105 and the electrodes 105c formed at another surface of the film 105 are electrically connected with each other via through holes 105d to support semiconductor devices having electrodes provided at a fine pitch and to improve durability.

Abstract: A structure of a printed circuit board with stacked daughter board. The structure has a motherboard and at least a daughter board. The motherboard has a first signal layer, a second signal layer, a first power layer, a first ground layer and isolation layers between every layer. The first signal layer and the second signal layer serve as surfaces of the motherboard and first contacts are formed on the first signal layer. The daughter board includes a third signal layer, a fourth signal layer, a second power layer, a second ground layer and isolation layers between every layer. The second power layer or the second ground layer serves as a surface of the daughter board and second contacts are formed on the surface. The daughter board is stacked on the motherboard and the second contacts are coupled with the first contacts.

Abstract: An image recording apparatus includes a plurality of print engine aligned in a advance direction in which a transporting member transports a recording medium. A first one of the plurality of image-forming sections records a first detection pattern on the transporting member and a second one of the plurality of image-forming sections records a second detection pattern on the first detection pattern. A color shift detecting section detects the amount of color shift between the first and second ones of the print engines by measuring an intensity of light reflected by the first and second detection patterns. Based on the amount of color shift, a correcting section corrects a position of the image recorded on the recording medium. The detection pattern may be of different configurations, depending on the direction in which color shift occurs, i.e., traverse, advance, and oblique directions.

Abstract: An image reading apparatus utilizing an indirect-contact transmission arrangement. The image reading apparatus includes a securing apparatus for placing a object for scanning; an image receiving apparatus; a guiding shaft; a transmitting component which can slide along the guiding shaft and drive the securing apparatus to move relatively to the image receiving apparatus via an indirect-contact component; and a dragging component which connects and drives the transmitting component. The indirect-contact component prevents the dragging component from transmitting vibrations generated during the scanning process to either the securing apparatus or the image receiving apparatus.

Abstract: A storage device uses an inventive alternate processing method for accommodating defective sectors of the storage device. The storage device includes a host interface, an alternate process controller which controls the storage and transfer of user data in and among the components of the apparatus, a memory which has a user sector area, an alternate information area, and a spare sector area, and a buffer memory which may be a part of the controller. User data addressed to normal sectors of memory are stored directly in the user sector area. When user data is addressed to a defective sector, the controller performs alternate processing and temporarily stores the data in the buffer memory. A plurality of user data sectors stored in the buffer memory are then written by the controller at one time to the spare sector area of memory using address data in the alternate information area.

Abstract: The present invention is directed toward a connector for knockdown furniture. The connector includes a hollow connecting block having an aperture at both ends of the connecting block. The aperture at the front end is for riveting a rod. The connecting block further includes a hole on both lateral sides. A pressing bracket is inside the connecting block, and has a diminishing opening at its front end. The front edge is pivoted outward to form a suppressing surface having a plurality of serrations and having a hole at the rear end. A locking member has an eccentric axle that passes through the aperture on the connecting block and the hole on the pressing bracket and rivets the front end of the pressing bracket to the connecting block. A rod is pivoted in the front end of the connecting block and is deposed at the back end of the diminishing opening of the pressing bracket.

Abstract: A resin sealing type semiconductor device, a manufacturing method thereof and a packaging structure thereof are capable of downsizing the semiconductor device and attaining high-density packaging. For this, the resin sealing type semiconductor device with leads exposed in an outer surface, is provided with spot leads adhered to a circuit forming surface of a semiconductor element with an insulating adhesive tape interposed therebetween, each independently regularly arrayed, and exposed to outside with the semiconductor element disposed inside.

Abstract: The structural design of a toothbrush according to this invention mainly improves the shortcomings of the conventional toothbrush having difficult access of the bristles to the interproximal areas and the areas of the tooth surface at opposite sides of a person's mouth and blind spots on cleansing certain difficult-to-reach areas.

Abstract: A semiconductor memory device has a main cell array, a redundant cell array, a spare cell array, and a selection circuit. The selection circuit can be programmed with the addresses of defective memory cells in the main cell array, and can then select memory cells in the redundant cell array in place of the defective memory cells. The addresses programmed into the selection circuit are also stored in the spare cell array. After programming of the selection circuit, the programmed addresses are read from the selection circuit and compared with the addresses stored in the spare cell array to verify that the programming has been accomplished successfully.

Abstract: A hand tool provides two operative modes for user selection. The hand tool includes a movable handle which may be turned to a first operative position axially aligned with the shank or be turned normal to the shank at a second operative position so that users may select different handle positions to meet different needs.

Abstract: The present invention pertains to a polarization independent tunable acousto-optical filter and the corresponding method. The filter diffracts an input light beam into a first input light beam unaffected by acoustic waves and a second input light beam affected by acoustic waves. A polarization beam displacer/combiner is employed to separate the input light beam into two orthogonal beams. Several polarized rotators are used to rotate the polarization of light by 90 degrees. An acousto-optical device makes the polarization of light with a particular wavelength rotate by 90 degrees. The two beams are then properly combined to form orthogonal beams. The filtering method has nothing to do with the polarization of the incident light. The filter has such advantages as a high extinction ratio, a small volume and a lower cost.

Abstract: A sliding and swiveling device includes a mounting plate, a moving seat, a moving assembly, and a rotating assembly. On the moving scat is provided an inner annular-toothed portion. The rotating assembly includes a fixedly toothed sleeve, a movably toothed ring, a first protruding strip, a camshaft, etc. In the toothed sleeve is provided an annular-toothed portion. On the toothed ring is provided an annular-toothed portion, and the upper surface thereof is provided a protruding pillar. The first protruding strip and camshaft are fitted on the mounting plate, which can be engaged each other or not. The mounting plate can freely rotate in twenty locking positions within 360 degrees around the toothed sleeve. Because the camshaft is also positioned on the mounting plate, the sliding and turning of the chair are both operated in the same place along with the movement thereof, thus it's convenient for users.