Abstract: A process for computing an eccentric amount of a disk upon rotating is provided. The process includes steps of starting a servo control system of a disk drive to rotate the disk at a specified angular velocity, measuring a track crossing speed of the servo control system at a focusing point on the disk, and computing the eccentric amount of the disk according to the specified angular velocity and the track crossing speed. A process for controlling rotation of a disk loaded in a disk drive is also provided. The process includes steps of realizing an eccentric amount of the disk, and rotating the disk at an operating speed corresponding to the eccentric amount.

Abstract: CAM devices that can be cascaded together to form CAM systems of different sizes are disclosed. The system has one or more clusters of M CAM devices, each device including (M?1) disable connections. Disable signals are used to avoid contention so that one CAM device generates the system output on a shared bus. To reduce pin count, the CAM device of priority N within each cluster has (N?1) of its disable connections programmed as inputs for disable-in signals received from higher-priority CAM devices, and its remaining (M?N) disable connections programmed as outputs for disable-out signals provided to lower-priority CAM devices. Some embodiments include two or more clusters of CAM devices and a controller. In some embodiments, the CAM system works as fast as a single CAM device. Some embodiments impose no architectural limits on the number of CAM devices that can be cascaded together.

Abstract: A method is provided for outputting a focusing completion signal to realize a focusing condition of an optical pickup head for an optical access apparatus. The method is described as follows. A trace shift of the optical pickup head along a focusing direction is actuated in response to a focus control signal when a focus adjustment operation starts. Then, a focusing error signal and a sub-beam addition signal are generated in response to optical signals from the optical pickup head. A closed-loop enable signal is generated to enable a closed-loop control operation in response to a specified situation of the focusing error signal. The focusing completion signal is outputted when the sub-beam addition signal is at a level greater than a threshold value and when the closed-loop enable signal is generated.

Abstract: An apparatus for generating wobble clock comprises: a comparing circuit and a phase lock loop. The comparing circuit generates a combining signal according to peak values of the wobble signal and compares the output signal with a reference voltage to output a control signal. The phase lock loop drives the wobble clock to be synchronized with the wobble signal if the protection signal corresponds to a first logic level, and stops driving the wobble clock to be synchronized with the wobble signal if the protect signal corresponds to a second logic level.

Abstract: A method and related circuit for clock generation and recovery utilizes digital components exclusively. The method is used to generate a wobble clock and an absolute time in pre-groove (ATIP) clock for controlling the operation of an optical disk drive. The circuit includes a counter and a digital logic circuit and utilizes clock triggering processes.

Abstract: A server and method is provided that allows a computer configured for a different network to access a network without hardware or software configuration changes to the computer. The invention allows users to plug into the network and access not only the network that their computer is connected to but also to the Internet, the Worldwide Web and the individual's email. This is particularly useful to visitors to multiple unit buildings such as hotels. Not only can the service be provided by the server and method of the invention connected to and carried out on the network but it does not require manual configuration changes to the computer or new software or hardware for the computer. In situations where access is to be controlled this is done through a registration driver and module. Only registered guests have access to the network and the services and access it provides. The invention determines and assigns addressing information to properly direct traffic to and from the computer.

Abstract: A problem is to provide a microspray column capable of increasing the ionization efficiency, and a high sensitive mass spectrometer and a mass spectrometric method using such a microspray column. For solving this problem, we provide a column for introducing a sample in an ionization source of a mass spectrometer (ESI/MS) being designed to ionize a sample molecule with electrospray and introduce it into an analyzer, has structural features of: (1) 0.5 ?m or less in an inner diameter of a tip opening of the column; (2) 0.5 ?m or more and 5 ?m or less in a particle size of a column filler; and (3) fritless, a microspray column having the above (1) to (3), a mass spectrometer having such a microspray column in an ionization source, and a mass spectrometric method capable of performing a nonoflow electrospray with the microspray column.

Abstract: A method for determining an optimum writing power of a compact disc drive includes representing the relationship between a target read-back signal parameter and writing power as a polynomial function, which is stored in a database. The optimum writing power is obtained after at least one iteration of a writing test procedure. The test procedure includes utilizing a constant writing power.

Abstract: A ventilation system is disclosed for an enclosure in which people live. The ventilation system comprises a first ducting means for ducting fresh air from outside to inside the enclosure and a second ducting means for ducting stale air. The second ducting means comprises a stale air inlet for receiving stale air containing carbon dioxide from inside the enclosure and an exhaust manifold having a first vent to exhaust air outside the enclosure and a second vent in fluid communication with the first ducting means to return clean air into the first ducting means. The ventilation system is further characterised in that it comprises catalysing means for catalysing hydration of carbon dioxide contained in at least a portion of the stale air into a solution of carbonate ions and hydrogen ions, and thereby removing carbon dioxide from said portion of the stale air and obtaining clean air. Evacuating means are also provided for evacuating the solution out of the ventilation system.

Abstract: A search scheme (10) in which a controller (14) provides a search key (16) to a search engine (18, 36). In one variation, the search engine (18) provides a match address (20) based on prefix matching to an associate content (AC) memory (22) and the AC memory provides a search result (24) back to the controller. In an other variation the search engine (36) effectively may include the AC and itself provide the search result (24). Within the search engine (18, 36) every possible prefix for possible respective prefix lengths in the search key may be represented, either by a bit which addressable maps to the search result, by content addressable memory (CAM) (32) associatively mapping to the search result, or by directly addressing the search result (24).

Abstract: A relocation system to associatively search a database lookup table with a search key to addressably retrieve a corresponding associate content table record as a search result. The relocation system is implemented in search engine devices having associative memory (e.g., CAM) having one or more sections. The search engine devices employ relocation values when calculating addresses, one per section per device, with the relocation values optionally pre-calculated and stored in relocation registers. The search engine devices may be cascaded to construct a larger search engine. The search engine is typically used with a processor and addressable memory (e.g., RAM or ROM). In particular, the relocation system permits multiple databases to be concurrently stored and worked with in the associative and addressable memory.

Abstract: A search engine (100) having a controller (112), a memory (114), and a hash pointer unit (110). The memory (114) includes a database of search data and associate content, and the controller (112) uses individual search values to access the memory (114) to obtain individual search results. The controller (112) includes a hash function (116) that generates a hash value from a, typically large, search value into a, typically smaller, hash value that may be a hash collision. The controller (112) converts the hash value into a hash address which is communicated to the hash pointer unit (110), which receives the hash address and provides a hash pointer that is communicated to and used by the memory to look up respective search results. In this manner hash collisions are avoided and the size of the memory (114) is not a function of the degree of multi-way set-associativity used.

Abstract: A process is disclosed for producing cement clinker, comprising the steps of: a) providing a mixture of ground calcareous materials and ground argillaceous materials; b) heating the mixture of step a) to a temperature sufficient to calcine and fuse the ground materials to form the cement clinker, and thereby producing an exhaust gas containing CO2; c) catalysing the hydration of at least a portion of the CO2 contained in the exhaust gas and producing a solution containing bicarbonate ions and hydrogen ions; and d) adding to the solution obtained in step c) metal ions, and adjusting the pH of the solution to precipitate a carbonate or said metal. Preferably, the metal ions are Ca++ obtained from the dissolution of a material selected from the group consisting of CaCl2, cement kiln dust and sea salts and the carbonate is CaCO3 which is advantageously recycled into the process by adding the CaCO3 to the mixture of step a). A cement plant for performing this process is also disclosed.

Abstract: A problem is to provide a microspray column capable of increasing the ionization efficiency, and a high sensitive mass spectrometer and a mass spectrometric method using such a microspray column. For solving this problem, we provide a column for introducing a sample in an ionization source of a mass spectrometer (ESI/MS) being designed to ionize a sample molecule with electrospray and introduce it into an analyzer, has structural features of: (1) 0.5 ?m or less in an inner diameter of a tip opening of the column; (2) 0.5 ?m or more and 5 ?m or less in a particle size of a column filler; and (3) fritless, a microspray column having the above (1) to (3), a mass spectrometer having such a microspray column in an ionization source, and a mass spectrometric method capable of performing a nonoflow electrospray with the microspray column.

Abstract: A hash-CAM (H-CAM) which may work with a controller and a memory containing a database of either search values and associate content or associate content by itself The H-CAM includes at least one set of paired hash units and CAM units and at least one logic unit. The CAM units hold values known to cause hash collisions in the respectively paired hash units, and the logic unit prioritizes the hash and CAM unit outputs to a single address value usable to access the memory and obtain a search result at the controller that is not the result of a hash collision. The H-CAM may optionally include a search data storage to store the search values, so that they need not be stored in the memory, and a comparator to determine and handle newly determined hash collisions.

Abstract: The disclosed invention provides a tracking method of an optical storage. When proceeding with tracking, the optical pickup head can be moved constantly and the TE signal can be detected. Then differentiation of the TE signal is obtained. If the differentiation is less than 0, then the TE signal is masked; otherwise, the TE signal is not masked. Therefore, the TE Hysteresis signal can be determined by the TE signal and its differentiation. The TE Hysteresis signal of 0 represents that the laser beam is in the Pit, and then the tracking procedure is finished. Otherwise, the aforementioned steps are repeated until the end of the tracking procedure.

Abstract: A head and neck restraint device for being worn by a driver while operating a high performance vehicle in which the device controls the driver's head from snapping forward and downwards during a frontal vehicular crash. The device includes a pair of anchor straps that are worn along the back of the driver. The straps are adapted for being connected to the driver's helmet and for being anchored to either the vehicle's seat belt assembly and/or to the driver's legs. The restraint device itself does not inhibit the driver from exiting the vehicle as exiting may occur after simply unlatching the vehicle's seat belt assembly. Moreover, since the restraint device is neither rigid nor bulky the driver may quickly exit the vehicle without being restricted by the device.

Abstract: A device and method for measuring the jitters of phase locked loop signals. A phase lead or phase lag relationship between an input signal and an output signal of a phase locked loop is found. According to the phase relationship and using multiplexers, a first phase difference signal and a second phase difference signal are re-routed to a subtraction unit and produces a jitter-level output signal. The jitter-level output signal represents the absolute value of the difference of pulse width between the first phase difference signal and the second phase difference signal.

Abstract: A thin film resonator having enhanced performance and a manufacturing method thereof are disclosed. The thin film resonator includes a supporting means, a first electrode, a dielectric layer and a second electrode. The supporting means has several posts and a supporting layer formed on the posts. The first electrode, the dielectric layer and the second electrode are successively formed on the supporting layer. The thin film resonator is exceptionally small and can be highly integrated, and the thickness of the dielectric layer of the resonator can be adjusted to achieve the integration of multiple bands including radio, intermediate and low frequencies. Also, the thin film resonator can minimize interference and has ideal dimensions because of its compact substrate, making the thin film resonator exceptionally small, yet comprising a three-dimensional, floating construction.

Abstract: The object of the invention is the coupling of a hydrogen fuel cell to an enzymatic process for the production of electricity and the transformation and sequestration of CO2. Gaseous CO2 emissions from processes such as hydrocarbon reforming are transformed into carbonate or bicarbonate ions and hydrogen ions by the enzymatic system in order to prevent their contribution to the greenhouse effect. The hydrogen ions resulting from the enzymatic process are recovered and combined in order to supply the hydrogen fuel cell. Finally, water, a by-product of the oxidizing reaction of the hydrogen fuel cell, is recovered and recycled back into the aqueous enzymatic system.