Abstract: A CAM array which enables a learning process to be an extension of a search process is disclosed. When a search fails to find a matching data in the CAM array, the searched data can automatically be written to a next free address without resorting to any additional search or selection processes.

Abstract: A recording clock generating apparatus for a data recording system includes a wobble signal sampler which samples a wobble signal, from wobble grooves of an optical disk. A first phase comparator provides a first phase-difference signal based on a difference in phase between the wobble signal and a first recording clock signal. A prepit detector detects a prepit signal from prepits of the optical disk. A second phase comparator provides a second phase-difference signal based on a difference in phase between the prepit signal and the first recording clock signal. A phase control signal generator provides a phase control signal based on a sum of the first phase-difference signal and the second phase-difference signal. A clock generator provides a second recording clock signal having a phase corrected in response to the phase control signal provided by the phase control signal generator.

Abstract: An optical cross-connecting device is small in scale of a switch even when a wavelength multiplexed signal to be transmitted through an optical fiber is high density and wide range. Switching of the wavelength multiplexed signals is performed in a first optical switch, switching per wavelength group in a second optical switch is performed for only signals required switching for smaller granularity, and switching per wavelength signals in a third optical switch is performed for only signals required switching for smaller granularity to from the opticall cross-connecting device. By this, even when the wavelength multiplexed signal to be transmitted through the optical fiber is high density and wide band, the optical cross-connecting device can be small in scale of a switch.

Abstract: In addition to five basic operation modes including “Add” operation mode, “Continue” operation mode, “Drop” operation mode, “Split and Add” operation mode and “Drop and Continue” operation mode, a function of carrying out “Time Division Switch Over” operation mode for sequentially switching over these basic operation modes in time division manner every constant time is provided in each of nodes 1 to 8. In a connection for a one-to-multiple communication, a connection for distributing a signal from the node 1 to a plurality of nodes 3, 5 and 7 is set by using “Split and Add” operation mode and “Drop and Continue” operation mode. In a connection for a multiple-to-one communication, the multiple-to-one communication is realized by timely switching between nodes performing one-to-one communication by using “Time Division Switch Over” operation mode for switching over between “Add” operation mode and “Continue” operation mode and “Time Division Switch Over” operation mode for switching over outgoing lines.

Abstract: A chemical mechanical polishing pad and a system and a method for using such a pad are described. The polishing pad includes pockets of continuous porosity, each of the pockets being separated from the other pockets by a non-porous matrix. The non-porous matrix may include a network of trenches, or may have pores which have been filled with a material. The material may include a polymer resin. A system for polishing a wafer includes the polishing pad mounted on a platen. A drive assembly creates relative rotation between the wafer and the polishing pad through a drive shaft. The drive shaft may be connected to the platen or it may be connected to a wafer holder which holds the wafer. Alternatively, one drive shaft may be connected to the platen and another drive shaft may be connected to the wafer holder, and a pair of drive assemblies drive the drive shafts.

Abstract: In a teleconference system, the computer disposed in each teleconference terminal apparatus for line reservation becomes unnecessary. An image generator of a center generates image information to display a list of numeric and nonnumeric characters. An image display unit of the teleconference terminal apparatus receives the image information via a communication line to display a list of numeric and nonnumeric characters on a monitor screen. When a user operates a position input operation from an input device, the input device accordingly generates positional information, and a pointer display unit display a pointer image at a position of the monitor screen indicated by the positional information. Each time the user moves the pointer image to a position of a desired numeric or nonnumeric character and conducts a selection determining operation from the input device, an information transmitter sends positional information to the center. In the center, an information receiver receives the positional information.

Abstract: A light amplifier is provided which is capable of maintaining the output light of excitation light sources at a constant level even when the light power input into the rare earth containing optical fiber fluctuates due to the tracking error of the excitation light source or due to the temperature characteristic or the polarization dependence of the excitation light multiplexer. The light passed through the rare earth containing optical fiber is extracted after being split by the splitting device 3, and output levels of the excitation light sources and are controlled by a control circuit in response to the levels of the extracted light. Consequently, the light output can be maintained at a constant level even when the excitation light power input into the optical fiber fluctuates due to the polarization dependence or the temperature characteristic of the light multiplexer for supplying the excitation light into the optical fiber.

Abstract: A GSM transceiver unit (10), for use in a GSM network (84), having a multilayer portable protocol stack is disclosed. The multilayer protocol stack includes a hardware layer (204), a first portable layer (206) configuring the hardware layer and controlling communications to and from the hardware layer, and second and third portable layers (208) controlling communications to and from the first portable layer and utilizing the first portable layer for communications with the GSM network. The GSM transceiver unit (10) includes a dynamics description (202) containing at least one time delay with each time delay representing an integer multiple of a fixed time duration for a particular instruction to be scheduled and containing at least one time advance with each time advance representing an integer multiple of the fixed time duration for a particular instruction to be scheduled.

Abstract: A method of repairing clear defects on a template such as a mask or reticle that includes the steps of directing a focused ion beam (FIB) to fill the clear defect with a carbon film and directing a FIB in the presence of a water containing gas to remove the carbon halo from around the clear defect repair area. The end of the carbon halo removal process may be detected by monitoring a change in the intensity of a secondary signal. The template is exposed to a basic solution to remove ion stains produced by the FIB. According to this method, clear defects are repaired and the carbon halo formed around the clear defect repair area of the template are removed.

Abstract: A portable, hydraulic prying machine is disclosed for use, for example, in prying open the doors of apartment buildings or of motor vehicles by rescue members in the event of an emergency. A motor and pump assembly, comprising an electric motor and a hydraulic pump driven thereby, is coupled to a pry assembly solely through the medium of a flexible conduit for delivery of a fluid under pressure from the pump to a hydraulic cylinder included in the pry assembly. The hydraulic cylinder on extension causes a pair of prying jaws to spread apart for forcing open the door. Being practically separate from the rest of the machine, the pry assembly is easier of handling. Additional embodiments are disclosed in which the pry assembly is replaced by other tool assemblies for other operations.

Abstract: A method and apparatus for operating a ventilator in a primary electronic mode or in a back-up pneumatic mode during primary electronic mode failure. A method and apparatus for operating a ventilator in an advanced mode, having a number of ventilatory modes, or in a basic mode, having a limited number of ventilatory modes is also disclosed.

Abstract: A system of semiconductor devices is formed by staggering like devices on opposite sides of a board, such that common leads on the opposed devices are aligned. The common leads are connected directly through the board. The staggered arrangement provides additional room for conductive lines on the board. In addition, it improves performance by reducing signal delays. The invention is applicable to a dual in-line memory module and other products formed of semiconductor devices.

Abstract: An ornament is shaped to be in balance about a surface point that is adapted to engage an upstanding projection. In one preferred embodiment, the ornament is formed from paper and is in the shape of a bird. The surface point is located at the bird's beak. The beak is adapted to engage the drinking edge of a vessel such as a glass. The center of mass of the bird is located below the surface point so that the bird has a stable equilibrium. The bird has a flat tail positioned to face upward. The tail may be written on, making the bird suitable for use a place indicator on a table at a formal function.