Abstract: The present invention provides a method and apparatus for measuring transaction response times. The method and apparatus can identify service request sequences corresponding to a transaction and the start and stop times for the transaction. The invention can be applied non-intrusively/non-invasively to the service packets communicated between a source and destination node.

Abstract: The present invention provides a method and apparatus for measuring transaction response times. The method and apparatus can identify service request sequences corresponding to a transaction and the start and stop times for the transaction. The invention can be applied non-intrusively/non-invasively to the service packets communicated between a source and destination node.

Abstract: A host adapter contains a RISC processor, a local memory, and a memory management unit that permits the RISC processor and a host computer system to access a local memory. The host computer system writes command descriptions directly into the local RAM. The RISC processor retrieves and processes the command descriptions. The local RAM may be divided into numbered command description blocks having a fixed size and format. In standard bus protocols, such as SCSI-2, block numbers are used as tag messages. Such tag messages allow the host adapter to quickly identify information used when an SCSI I/O request is resumed. The command description blocks may be linked into lists, including an active list containing command description blocks that are ready for the RISC processor and a free list containing command description blocks that are available for use by the host computer.

Abstract: The present invention has at least a continuous belt or chain, a sliding bar, at least two drivers--one for moving and driving the belt--, and a plurality of constraining rollers for guiding the belt around all the other components such that the portion of the belt between the rollers and the extreme ends of the sliding bar is substantially parallel thereto. Suction cups or grippers disposed at regular intervals along the belt and having distance which is greater or equal to that of the tray pitch and frame pitch picks up outputs from a packaging system and places such outputs into carrier trays. The sliding bar accommodates automaticaly troy change without interrupting the operating of the packaging system. By matching the flow of outputs from packaging system with that of the offloading trays, space economy is achieved without requiring modification to existing packaging systems.

Abstract: A method for encapsulating semiconductor devices includes the steps of: providing a molding system and a close-loop control system which is coupled to the molding system, the close-loop control system including a computer, a programmable logic control, a servo motor controller, and at least two drivers, wherein the servo motor controller is coupled to the computer and the programmable logic control, respectively, the servo motor controller is further coupled to the drivers, and the drivers are coupled to the molding system; clamping together at least one set of top and bottom molds of the molding system, the molding system including a clamping assembly having a clamping axis, the close-loop control system being coupled to the clamping assembly; feeding a molding compound into a cavity formed by a space between at least one set of top and bottom molds, the molding system further including a transfer assembly having a transfer axis; alternating a gear switching assembly of the molding system between a high spee

Abstract: A single instance of a device driver is used to control multiple peripheral devices in a computer system having a central processor for executing an operating system, a memory, and first and second interface buses permitting interconnection of peripheral adapters with the central processor. The interface buses each correspond to different classes of peripheral adapters. The device driver includes an initialization routine for scanning the interface buses to identify predetermined functionally related peripheral adapters. A communications path is provided between the operating system and each of the peripheral adapters of a form appropriate for the particular interface bus connected to each adapter. A control path is also provided between each of the peripheral adapters and the operating system of a form appropriate for the particular interface bus connected to each adapter.

Abstract: An input/output port address selection circuit for a device that couples to a local bus of a computer operates in two modes. In a first mode, the I/O port address is maintained as the last I/O port address saved. In the second mode, the selection circuit changes the I/O port address and saves the change when the circuit is reset. A computer user resolves I/O port address conflicts by placing the selection circuit in the second mode then resetting the system until the conflict is resolved and the system works properly. The selection circuit is then placed and left in the first mode so that the non-conflicting address is reused. Non-volatile memory, an electrically erasable-programmable read-only memory, is used for saving an index which indicates the last I/O port address set. The non-volatile memory is changed when the selection circuit is operated in the second mode.

Abstract: The present invention describes an apparatus for achieving power amplification in general press and elevating systems with enhanced control and without the disadvantages of the pneumatic and angle-linked devices. A motor is coupled to a screw and nut for delivering force to at least one transfer piston within a fixed volume at the base of a larger piston. Amplification of power is attained when transfer piston displaces the fluid within the fixed volume. A pressure sensor in the fixed volume and coupled to the motor provides the closed loop feedback required of the control of power amplification. The change in force exerted by the transfer piston has linear relationship with the change in power output of the larger piston.

Abstract: A direct drive electro-mechanical press for encapsulating semiconductor devices has at least a clamping axis and a transfer axis. The clamping axis has a planetary roller screw coupled to a tie bar platen assembly on which at least one top mold is mounted. A two-speed gearbox is further coupled to the clamping axis for switching between a high speed mode and a high torque mode along the clamping axis. The two-speed gearbox has a high speed clutch coupled to a speed reducer and a high torque clutch respectively. The transfer axis is slidably located above the clamping axis; the transfer axis has another planetary roller screw coupled to a bottom platen on which at least one bottom mold is mounted. The transfer axis transfers the molding resin from the pot into the cavities formed when the top and bottom molds are clamped together.

Abstract: A recyclable abrasive blasting system for blasting abrasive against a surface to be cleaned and for recovering such abrasive which has been blasted, comprising a storage hopper for containing abrasive, blast pots which receive abrasive and deliver it to a blasting hose wherein abrasive is propelled against a surface, an autodump tank including an inlet for receiving particles resulting from blasting, such particles comprising trash, debris, dust and abrasive, a screen for separating trash and debris from the particles, an airwash for separating dust from said particles, and valves for metering the amount of particles traveling therethrough, a classifier includes a first auger and a plurality of augers formed by screens having spiral members thereon, the plurality of augers surrounding the first auger and in rotating cooperation therewith, whereby the screens classify debris from abrasive such that it may be routed outside of the classifier, whereby an airwash takes place and wherein any remaining particles tr

Abstract: A window system wherein lower level screens display a reduced size iconic representation of a menu screen. The depression of determined keys or key combinations enables the user to scan the menu in an iconic representation as well as to select the window corresponding to the position of the cursor. The reduced size iconic menu representation may be associated with descriptive text. The system permits selection of new window without the necessity of returning to the menu at the next higher window level. Icons may also be provided to enable skipping of menu levels, to avoid the necessity of returning to a previous menu.

Abstract: A system and method for converting moving video images to a format used by graphics display boards which is based on a pseudo-color method (i.e., displays such as Super VGA used by IBM personal computers and compatibles capable of displaying only 256 colors wherein the resulting visual model emulates thousands of colors displaying richly colored images and delivering a much better result than technologies based on currently used techniques such as the common histogram method. An error factor is determined for each pixel in a frame and a portion of the error is diffused among the neighboring pixels and the corresponding pixel in the next frame. A selection process specifies a universal palette which contains an optimum set of colors for all images, i.e., without using a histogram which determines the colors which appear most frequently in a single particular image.

Abstract: A system and method for converting true-color still images to a format used by graphics display boards which is based on a pseudo-color method (i.e., displays such as Super VGA used by IBM personal computers and compatibles capable of displaying only 256 colors). The resulting visual model emulates thousands of colors displaying richly colored images and delivering a much better result than technologies based on currently used techniques such as the common histogram method. The high quality is obtained by determining an error factor for each pixel. In a preferred embodiment, the 256 colors are determined by a selection process which specifies a universal palette which contains an optimum set of colors for all images, i.e., without using a histogram which determines the colors which appear most frequently in a single particular image.

Abstract: Apparatus for contacting a circuit board substrate with etching fluid or some other chemical includes a conveyor system comprised of upper and lower rotating disks for receiving and transporting the circuit board substrate while the substrate is contacted with fluid. The apparatus utilizes a modular drive system to drive the disks. The drive system is not exposed to the chemicals used to contact and process the circuit board substrate. The rotating disks can be removed from the apparatus without requiring disassembly of the modular drive system.

Abstract: A frequency source (1) in, for example, a remote unit in a mobile communications system, is controlled to maintain a stable frequency signal. In normal operation, the frequency source (1) is frequency locked to an external reference frequency (10). A temperature detecting device (2) monitors the temperature of the frequency source, and information relating to temperature is stored in a storage device (7) together with information relating to control signals (6) applied to the frequency source (1). In the absence of the reference frequency (10), the temperature of the frequency source (1) is detected and the stored information is used to generate a control signal (6) to control the output frequency of the frequency source (1) in accordance with the detected temperature.

Abstract: A system for extending the frequency range of an RF amplifier by improving the VSWR, and power handling capability of the amplifier, comprising a broadband reversing transformer, a first and a second amplifier coupled by means of a first and a second through-line quadrature coupler with the first quadrature coupler being connected to the inputs of the two amplifiers and the second quadrature coupler being connected to the outputs of the two amplifiers. The broadband reversing transformer is inserted in series with one of the two amplifiers enabling a signal at frequencies out of the passband of the quadrature couplers to pass through the through-lines port of the quadrature couplers, and thereby greatly extending the frequency range over which quadrature couplers may be used while, at the same time, retaining the usual combining and VSWR advantages of the couplers within their passbands.

Abstract: A spread-spectrum transmission system wherein a plurality of spread-spectrum signals are frequency division multiplexed by offsetting the center or carrier frequencies of the spread-spectrum signals by a fraction of the spectral-line spacing of the signals. The signals are generated by modulating a carrier with a pseudo-noise (PN) code signal. At a receiver, demultiplexing is carried out by mixing (42) the received multiplexed signal with a plurality of local oscillator frequencies (43) which are offset from each other in the same manner as the centre or carrier frequencies of the multiplexed spread-spectrum signals. The mixed signals are then further mixed (45) with generated PN code signals (47) corresponding to those used to generate the multiplexed spread-spectrum signals. The epoch of each generated PN code signal is then advanced or retarded in response to a respective epoch control signal (48) generated by a respective controller (46).

Abstract: A dynamic flood conveyor. The conveyor permits a chemical solution to be applied to the surface of a material such that the solution interacts with the material at a generally uniform rate at each point on the surface of the material. The apparatus promotes laminar flow of the channel solution over the surface of the material and uses segmented rollers to minimize the fluid loss from the flood conveyor.

Abstract: Disclosed are a pulse cancellation system and a pulse cancellation method for enhancing the effect of a small pulse superimposed on a large pulse, in the context of processing video signals in a circuit employing a compression video amplifier. The original waveform is delayed by a selected interval which is short as compared with the expected duration of pulses of interest in it, and the delayed waveform is subtracted from the original one to cancel the effect of those portions of pulses which are longer than the selected delay interval. Excursions of the resulting waveform which are on a selected side of a selected baseline can be removed, if desired. Alternative embodiments provide for selectively bypassing the delay and cancellation circuits, to feed the detector output directly to the compression amplifier in some cases, and for placing the small pulse enhancing circuit before the detector.