at

Methods and apparatuses for isomerization of paraffins

Embodiments of methods and apparatuses for isomerization of paraffins are provided. In one example, a method comprises the steps of separating an isomerization effluent into a product stream that comprises branched paraffins and a stabilizer vapor stream that comprises HCl, H2, and C6-hydrocarbons. C6-hydrocarbons are removed from the stabilizer overhead vapor stream to form a HCl and H2-rich stream. An isomerization catalyst is activated using at least a portion of the HCl and H2-rich stream to form a chloride-promoted isomerization catalyst. A paraffin feed stream is contacted with the chloride-promoted isomerization catalyst in the presence of hydrogen for isomerization of the paraffins.




at

Method for the manufacture of branched saturated hydrocarbons

The invention relates to a method for the manufacture of branched saturated hydrocarbons, said method comprising the steps where a feed comprising olefins having at least 10 carbons is simultaneously hydrogenated and isomerized in the presence of hydrogen at a temperature of 100-400° C., under hydrogen partial pressure of 0.01-10 MPa, in the presence of a catalyst comprising a metal selected from the metals of Group VIIIb of the Periodic Table of Elements, a molecular sieve selected from ten member ring molecular sieves, twelve member ring molecular sieves and mesoporous molecular sieves embedded with zeolite, and a carrier, to yield branched saturated hydrocarbons.




at

Z-selective ring-closing metathesis reactions

The present invention relates generally to olefin metathesis. In some embodiments, the present invention provides methods for Z-selective ring-closing metathesis.




at

Spin-transfer torque magnetic random access memory (STTMRAM) with perpendicular laminated free layer

A perpendicular spin-transfer torque magnetic random access memory (STTMRAM) element includes a fixed layer having a magnetization that is substantially fixed in one direction and a barrier layer formed on top of the fixed layer and a free layer. The free layer has a number of alternating laminates, each laminate being made of a magnetic layer and an insulating layer. The magnetic layer is switchable and formed on top of the barrier layer. The free layer is capable of switching its magnetization to a parallel or an anti-parallel state relative to the magnetization of the fixed layer during a write operation when bidirectional electric current is applied across the STTMRAM element. Magnetic layers of the laminates are ferromagnetically coupled to switch together as a single domain during the write operation and the magnetization of the fixed and free layers and the magnetic layers of the laminates have perpendicular anisotropy.




at

Integrated microelectronic package temperature sensor

Temperatures in microelectronic integrated circuit packages and components may be measured in situ using carbon nanotube networks. An array of carbon nanotubes strung between upstanding structures may be used to measure local temperature. Because of the carbon nanotubes, a highly accurate temperature measurement may be achieved. In some cases, the carbon nanotubes and the upstanding structures may be secured to a substrate that is subsequently attached to a microelectronic package.




at

Metal silicate nanosheets, methods of making metal silicate nanosheets, and methods of use

Embodiments of the present disclosure relate to the preparation of colloidal dispersions or suspensions of inorganic materials with nano-sized and nano-structured morphologies, preferably the nanosheet form, compositions produced by this method, and the like.




at

Composite material, method for producing the same, and apparatus for producing the same

Disclosed is a composite material wherein adhesion between a silicon surface and a plating material is enhanced. A method and an apparatus for producing the composite material are also disclosed. The method for producing a composite material comprises a dispersion/allocation step wherein the surface of a silicon substrate (102), which is a matrix provided with a silicon layer at least as the outermost layer, is immersed into a first solution containing gold (Au) ions, so that particulate or island-shaped gold (Au) serving as a first metal and substituted with a part of the silicon layer are dispersed/allocated on the matrix surface, and a plating step wherein the silicon substrate (102) is immersed into a second solution (24), which contains a reducing agent to which gold (Au) exhibits catalyst activity and metal ions which can be reduced by the reducing agent, so that the surface of the silicon substrate (102) is covered with the metal or an alloy of the metal (108) which is formed by autocatalytic electroless plating using gold (Au) as a starting point.




at

Negative active material, method of preparing the same, and lithium battery including the same

Provided are a negative active material, a method of preparing the same, and a lithium battery including the negative active material. The negative active material includes a carbonaceous core that has a sulfur content of about 10 ppm to 900 ppm; and an amorphous carbon layer continuously formed on a surface of the carbonaceous core, wherein the carbonaceous core has a crystalloid plate structure, and a crystallite size measured from a full width at half maximum of the peak with respect to the surface (002) of about 10 nm to about 45 nm in an X-ray diffraction spectrum of the carbonaceous core. The lithium battery including a negative electrode including the negative active material has improved capacity characteristics and ring lifetime characteristics.




at

Method of fabricating Ag-doped Te-based nano-material and memory device using the same

A nano-ionic memory device is provided. The memory device includes a substrate, a chemically inactive lower electrode provided on the substrate, a solid electrolyte layer provided on the lower electrode and including a silver (Ag)-doped telluride (Te)-based nano-material, and an oxidizable upper electrode provided on the electrolyte layer.




at

Silica-supported oligomeric hybrid materials

A particle-polymer hybrid material can include: a substance having the structure of Formula 1 Z(Y-FP)m, wherein Z is a particle smaller than 1 mm; m is an integer; Y is a linker including a silicon atom linked to the particle; FP is a functionalized polymer having: a first structure derived from a first norbornene compound linked to the Y; and one or more repeating units linked to the first structure, each unit being derived from a second norbornene compound and having a functional group.




at

Low molecular weight cationic lipids for oligonucleotide delivery

The instant invention provides for novel cationic lipids that can be used in combination with other lipid components such as cholesterol and PEG-lipids to form lipid nanoparticles with oligonucleotides. It is an object of the instant invention to provide a cationic lipid scaffold that demonstrates enhanced efficacy along with lower liver toxicity as a result of lower lipid levels in the liver. The present invention employs low molecular weight cationic lipids with one short lipid chain to enhance the efficiency and tolerability of in vivo delivery of siRNA.




at

Controlled synthesis of monolithically-integrated graphene structure

In a method for fabricating a graphene structure, there is formed on a fabrication substrate a pattern of a plurality of distinct graphene catalyst materials. In one graphene synthesis step, different numbers of graphene layers are formed on the catalyst materials in the formed pattern. In a method for fabricating a graphene transistor, on a fabrication substrate at least one graphene catalyst material is provided at a substrate region specified for synthesizing a graphene transistor channel and at least one graphene catalyst material is provided at a substrate region specified for synthesizing a graphene transistor source, and at a substrate region specified for synthesizing a graphene transistor drain. Then in one graphene synthesis step, at least one layer of graphene is formed at the substrate region for the graphene transistor channel, and at the regions for the transistor source and drain there are formed a plurality of layers of graphene.




at

Non-volatile memory structure containing nanodots and continuous metal layer charge traps and method of making thereof

A memory device includes a semiconductor channel, a tunnel dielectric layer located over the semiconductor channel, a first charge trap including a plurality of electrically conductive nanodots located over the tunnel dielectric layer, dielectric separation layer located over the nanodots, a second charge trap including a continuous metal layer located over the separation layer, a blocking dielectric located over the second charge trap, and a control gate located over the blocking dielectric.




at

Initialization method of a perpendicular magnetic random access memory (MRAM) device

Methods using a sequence of externally generated magnetic fields to initialize the magnetization directions of each of the layers in perpendicular MTJ MRAM elements for data and reference bits when the required magnetization directions are anti-parallel are described. The coercivity of the fixed pinned and reference layers can be made unequal so that one of them can be switched by a magnetic field that will reliably leave the other one unswitched. Embodiments of the invention utilize the different effective coercivity fields of the pinned, reference and free layers to selectively switch the magnetization directions using a sequence of magnetic fields of decreasing strength. Optionally the chip or wafer can be heated to reduce the required field magnitude. It is possible that the first magnetic field in the sequence can be applied during an annealing step in the MRAM manufacture process.




at

Method for detection of cyanide in water

The method for detection of cyanide in water is a method for the detection of a highly toxic pollutant, cyanide, in water using ZnO2 nanoparticles synthesized locally by an elegant Pulsed Laser Ablation technique. ZnO2 nanoparticles having a median size of 4 nm are synthesized from pure zinc metal target under UV laser irradiation in a 1-10% H2O2 environment in deionized water. The synthesized ZnO2 nanoparticles are suspended in dimethyl formamide in the presence of Nafion, and then ultrasonicated to create a homogenous suspension, which is used to prepare a thin film of ZnO2 nanoparticles on a metal electrode. The electrode is used for cyanide detection.




at

Method for separately processing regions on a patterned medium

The disclosure relates generally to a method for fabricating a patterned medium. The method includes providing a substrate with an exterior layer under a lithographically patterned surface layer, the lithographically patterned surface layer comprising a first pattern in a first region and a second pattern in a second region, applying a first masking material over the first region, transferring the second pattern into the exterior layer in the second region, forming self-assembled block copolymer structures over the lithographically patterned surface layer, the self-assembled block copolymer structures aligning with the first pattern in the first region, applying a second masking material over the second region, transferring the polymer block pattern into the exterior layer in the first region, and etching the substrate according to the second pattern transferred to the exterior layer in the second region and the polymer block pattern transferred to the exterior layer in the first region.




at

Biomolecular sensor with plural metal plates and manufacturing method thereof

Disclosed are a biomolecular sensor and a method of fabricating the same having high sensitivity and resolution by using a plurality of metal plates that change electrical properties of a plurality of nanostructures according to the attachment of biomolecules. The biomolecular sensor includes a substrate, first and second electrodes disposed to be spaced apart from each other on the substrate, a plurality of nanostructures disposed on the substrate to connect the first and second electrodes to each other, and a plurality of metal plates that change electrical properties of the plurality of nanostructures according to the attachment of biomolecules.




at

Water-borne paints based on epoxy resins

An aqueous epoxy resin system AB is described comprising an aqueously dispersed epoxy resin A having, on the average, at least one epoxy group per molecule, and a water-soluble or water-dispersible curing agent B which comprises the reaction product of an amine B1 having at least one primary and/or at least one secondary amino group, an adduct B2 of a polyalkylene ether polyol B21 and an epoxide component B22, and an aromatic compound B3 having at least one acidic group selected from the group consisting of hydroxyl and carboxyl groups, which system can be applied by rolling, spraying or brushing to provide corrosion protection on base metals.




at

Rubber composition and pneumatic tire

The present invention provides a rubber composition that can enhance the fuel economy, wet-grip performance, and abrasion resistance in a balanced manner, and a pneumatic tire using this rubber composition. The present invention relates to a rubber composition that contains a rubber component, silica, and a silane coupling agent, wherein the rubber component contains, based on 100% by mass of the rubber component, not less than 5% by mass of a conjugated diene polymer containing a constituent unit based on a conjugated diene and a constituent unit represented by formula (I) below, at least one terminal of the polymer being modified with a specific compound; an amount of the silica is 5 to 150 parts by mass per 100 parts by mass of the rubber component; and the silane coupling agent contains a mercapto group.




at

Epoxy group-terminated polymers, the compositions thereof and the use thereof as impact resistance modifiers

The present invention relates to epoxy group-terminated polymers of the formula (I). Said epoxy group-terminated polymers are suited extremely well as impact resistance modifiers, particularly in epoxy resin compositions. They are particularly suited for use in heat-curing epoxy resin adhesives. It has been found that such epoxy resin compositions not only have excellent mechanical properties and high glass transition temperatures, but also above all improved impact resistance properties, both at room temperature and at low temperatures.




at

Ophthalmic and otorhinolaryngological device materials

Disclosed are soft, high refractive index, acrylic device materials. The materials contain a copolymeric additive for glistening resistance.




at

Matting and/or frosting additive for polymers or polymer blends

The invention is directed to a matting and/or frosting additive concentrate for polymers or polymer blends, said additive comprising to 75% by weight of hollow glass microspheres and 20 to 95% by weight of a liquid or waxy carrier material and optionally up to 75% by weight of additives.




at

Surface treated calcium carbonate filler for resin and resin composition containing the filler

Provided is a surface treated calcium carbonate filler for resins, which comprises calcium carbonate particles, the surface of which has been treated with at least one surface active agent (A) selected from the group consisting of saturated fatty acids, unsaturated fatty acids, alicyclic carboxylic acids, resin acids, and salts thereof and with at least one compound (B) having the ability to chelate alkaline earth metals, the compound (B) being selected from the group consisting of phosphonic acids, polycarboxylic acids, and salts thereof. The surface treated calcium carbonate filler for resins of the present invention deteriorates little with time, has satisfactory dispersibility in resins, and can give a sheet or film which has a satisfactory balance among durability, weatherability, strength, and thermal stability, and is useful as a battery separator or a light reflector.




at

Surface treatment of silicone materials

Disclosed herein are surface treatments for soft silicone gel materials such as silicone intraocular lenses.




at

Composite material comprising a monomer with a polyalicyclic structure element

A composite material and method of making and using the same is described. In particular a dental (and preferably photocurable) composite material, and the use of a composite material according to the invention as a dental material and a method for preparation of a composite material according to the invention. Also disclosed are novel radically polymerizable monomers comprising at least one polyalicyclic structure element and certain ethylenic structure elements, which are particularly suitable for use in a composite material according to the invention.




at

Epoxy resin composition and light emitting apparatus

Disclosed are an epoxy resin composition and a light emitting apparatus. The epoxy resin composition includes a triazine derivative epoxy resin and an alicyclic epoxy resin.




at

Dental prosthetics comprising curable acrylate polymer compositions and methods of their use

Disclosed herein are acrylic and methacrylic acid ester-based polymeric materials containing as flexibilizing and brittleness reducing agents 1-60% of C4-C8 polyalkylene or polyalkyldiene compounds, preferably having a molecular weight of 300-2100, and the use of such materials in dentistry and medicine.




at

Artificial silica marble having amorphous patterns and method for preparing the same

An artificial silica marble comprises a matrix and a line pattern portion. The line pattern portion comprises fine lines having a width of about 50 to about 500 μm and forms a web- or net-like pattern. The line pattern portion divides or partitions the artificial silica marble into a plurality of irregularly shaped pattern portions to form an amorphous pattern in the cross section of the artificial silica marble.




at

Coating/sealant systems, aqueous resinous dispersions, methods for making aqueous resinous dispersions, and methods of electrocoating

A coating/sealant system that includes a coating and a sealant deposited over at least a portion of the coating, in which the coating includes a reaction product formed from reactants comprising a phosphated epoxy resin and a curing agent, and the sealant includes a sulfur-containing polymer.




at

Thermosetting resin composition, B-stage heat conductive sheet, and power module

Provided is a thermosetting resin composition including an inorganic filler and a thermosetting resin matrix component, in which the inorganic filler includes secondary sintered particles each formed of primary particles of scaly boron nitride, and at least some of the secondary sintered particles each have a maximum cavity diameter of 5 μm to 80 μm. The thermosetting resin composition can be used for providing a heat conductive sheet in which electrical insulation property is kept by controlling where the defects such as voids and cracks occur and their size, and which has excellent heat conductivity.




at

Hydroswellable, segmented, aliphatic polyurethanes and polyurethane ureas

Hydroswellable, absorbable and non-absorbable, aliphatic, segmented polyurethanes and polyurethane-urea capable of swelling in the biological environment with associated increase in volume of at least 3 percent have more than one type of segments, including those derived from polyethylene glycol and the molecular chains are structurally tailored to allow the use of corresponding formulations and medical devices as carriers for bioactive agents, rheological modifiers of cyanoacrylate-based tissue adhesives, as protective devices for repairing defective or diseased components of articulating joints and their cartilage, and scaffolds for cartilage tissue engineering.




at

Thermosetting adhesive composition, and heat resistant adhesive film and wiring film using the same

Provided are a thermosetting adhesive composition excellent in storage stability, reliability, and low-temperature adhesion properties; and a curl-resistant heat-resistant film and a wiring film obtained using the composition. The thermosetting adhesive composition includes 100 parts by weight of a phenoxy resin having a bisphenol S skeleton in the structure thereof; 5 to 30 parts by weight of a maleimide compound containing a plurality of maleimide groups in the structure thereof; and 3 to 20 vol % of an inorganic needle-like filler. The heat resistant adhesive film is obtained by applying the thermosetting adhesive composition onto a polyimide film, followed by drying. The wiring film is obtained by placing a conductor wiring layer on the heat resistant adhesive film.




at

Polymer material, ophthalmic lens and contact lens

Provided is a polymer material having superior water wettability and lubricity, and enabling persistence of the same by allowing the surfactant to be retained by the polymer material so as not to be gradually released. The present invention is directed to a polymer material including: [I] a polymer having a constitutional unit derived from (A) a polymerizable compound having an acryloyloxy group and not having a silicon atom; and [II] a surfactant. The content of the surfactant [II] is preferably 0.05% by mass or greater and 1% by mass or less. The surfactant [II] is preferably a nonionic surfactant having a polyoxyethylene group.




at

Direct-to-metal and exterior durable non-skid coating

A non-skid coating described herein attempts to overcome the deficiencies of the conventional coatings with improved external durability and color retention, a reduced level of VOCs, and direct-to-metal (DTM) adhesion using organo-siloxane chemistry. The non-skid coating has a first component having an amino-functional siloxane resin; a second component having a non-aromatic epoxy resin; a spherical filler for lowering viscosity; a pigment; a coarse aggregate; and a thixotropic agent. The amino-functional siloxane resin can be an amino-functional methyl phenyl polysiloxane, diphenyl polysiloxane or silsesquioxane-based resin. The non-aromatic epoxy resin can be cycloaliphatic or aliphatic. The first component is about 5% to 20% weight of the coating, and the second component is about 80% to 95% weight of the coating.




at

Rubber composition and pneumatic tire

The purpose of the present invention is to provide a rubber composition with which it is possible to produce a tire that retains wear resistance and has excellent frictional force on ice, and a pneumatic tire using the rubber composition. The rubber composition of the present invention is a rubber composition comprising a diene rubber, carbon black and/or a white filler, and a master batch prepared by premixing a non-diene rubber and an organic peroxide, wherein a total content of carbon black and white filler is from 20 to 70 parts by mass per 100 parts by mass of diene rubber and a content of the non-diene rubber in the master batch is from 3 to 30 parts by mass per 100 parts by mass of the diene rubber.




at

Poly(butylene-co-adipate terephthalate), method of manufacture and uses thereof

A method for preparing poly(butylene terephthalate-co-adipate) copolymer by polymerizing 1,4-butane diol, an adipic acid component and an aromatic dicarboxy compound derived from polyethylene terephthalate, and a polyester component residue in the presence of a catalyst under conditions effective to form poly(butylene terephthalate-co-adipate) oligomers; adding a quencher; and reacting the quenched poly(butylene terephthalate-co-adipate) oligomers with a chain extender.




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Ink-jet ink for color filter and method for preparing the same and method for preparation of color filter

The disclosure provides an ink jet ink for color filter and a method for preparing the same, as well as a method for preparing of a color filter. The ink jet ink for color filter comprising, by weight, 10 to 50 parts of aqueous nano pigment dispersion and 51 to 95 parts of a cold curing component.




at

Multifunctional hyperbranched organic intercalating agent, method for its manufacture and its use

A facile synthesis of amphiphilic hyperbranched polymers consisting of poly(amic acid) and polyimide was developed via “A2+B3” approach from difunctional anhydride and trifunctional hydrophilic poly(oxyalkylene)triamine. Various amphiphilic hyperbranched poly(amic acid)s (HBPAAs) with terminal amine functionalities and amic acid structures were prepared through ring-opening polyaddition at room temperature, followed by thermal imidization process for the formation of hyperbranched polyimides (HBPIs), accordingly. The resulting HBPIs were analyzed by GPC, indicating the molecule weights of 5000˜7000 g/mol with a distribution of polydispersity between 2.0 and 3.8. The amine titration for HBPIs indicated the peripheral total-amine contents to be 8.32˜18.32 mequiv/g dependent on compositions.




at

Polymerization process and raman analysis for olefin-based polymers

The invention provides a process for monitoring and/or adjusting a dispersion polymerization of an olefin-based polymer, the process comprising monitoring the concentration of the carbon-carbon unsaturations in the dispersion using Raman Spectroscopy. The invention also provides a process for polymerizing an olefin-based polymer, the process comprising polymerizing one or more monomer types, in the presence of at least one catalyst and at least one solvent, to form the polymer as a dispersed phase in the solvent; and monitoring the concentration of the carbon-carbon unsaturations in the dispersion using Raman Spectroscopy.




at

Epoxy resin composition for encapsulating semiconductor, semiconductor device, and mold releasing agent

Disclosed is an epoxy resin composition used for encapsulation of a semiconductor containing an epoxy resin (A), a curing agent (B), an inorganic filler (C) and a mold releasing agent, in which the mold releasing agent contains a compound (D) having a copolymer of an α-olefin having 28 to 60 carbon atoms and a maleic anhydride esterified with a long chain aliphatic alcohol having 10 to 25 carbon atoms.




at

Phosphorylcholine-based amphiphilic silicones for medical applications

Amphiphilic biomimetic phosphorylcholine-containing silicone compounds for use in both topical and internal applications as components in biomedical devices. The silicone compounds, which include zwitterionic phosphorylcholine groups, may be polymerizable or non-polymerizable. Specific examples of applications include use as active functional components in ophthalmic lenses, ophthalmic lens care solutions, liquid bandages, wound dressings, and lubricious and anti-thrombogenic coatings.




at

Method and apparatus for output of high-bandwidth debug data/traces in ICS and SoCs using embedded high speed debug

Methods and apparatus for output of high-bandwidth debug data/traces in electronic devices using embedded high-speed debug port(s). Debug data is received from multiple blocks and buffered in a buffer. The buffer's output is operatively coupled to one or more high-speed serial I/O interfaces via muxing logic during debug test operations. The buffered data is encoded as serialized data and sent over the one or more high-speed serial I/O interfaces to a logic device that receives serialized data and de-serializes it to generate parallel debug data that is provided to a debugger. The buffer may be configured as a bandwidth-adapting buffer that facilitates transfer of debug data that is received at a variable combined data rate outbound via the one or more high-speed serial I/O interfaces at a data rate corresponding to the bandwidth of the serial I/O interfaces.




at

Method and device for detecting logic interface incompatibilities of equipment items of on-board systems

The invention in particular has as an object detecting incompatibility between equipment items of a on-board system. A logic interface associated with one equipment item comprises at least one input while a logic interface associated with another equipment item comprises at least one output. The input and the output are connected. After a minimal data definition level associated with the input and a data definition level associated with the output have been obtained (505), the said minimal data definition level associated with the input is compared (515) with the said data definition level associated with the output. Following this comparison, if the said minimal data definition level associated with the input is lower than the said data definition level associated with the output, an alarm indicating an incompatibility of these two equipment items is generated (545).




at

Systematic failure remediation

Aspects of the present invention provide a tool for analyzing and remediating an update-related failure. In an embodiment, a failure state of a computer system that has been arrived at as a result of an update is captured. A semantic diff that includes the difference between the failure state and at least one of an original state or a completion state is then computed. This semantic diff is transformed into a feature vector format. Then the transformed semantic diff is analyzed to determine a remediation for the update. Failure and/or resolution signatures can be constructed using the semantic diff and contextual data, and these signatures can be used in comparison and analysis of failures and resolutions.




at

User-coordinated resource recovery

A computing system resource recovery method can include identifying a resource manager associated with a computing transaction, classifying the computing transaction to determine a predetermined metric, measuring an actual metric of the computing transaction, comparing the predetermined metric to the actual metric to detect abnormal behavior in the transaction and modeling the abnormal behavior to determine how the resource manager is affected by the abnormal behavior.




at

Introspection of software program components and conditional generation of memory dump

An approach for introspection of a software component and generation of a conditional memory dump, a computing device executing an introspection program with respect to the software component is provided. An introspection system comprises one or more conditions for generating the conditional memory dump based on operations of the software component. In one aspect, a computing device detects, through an introspection program, whether the one or more conditions are satisfied by the software component based on information in an introspection analyzer of the introspection program. In addition, the computing device indicates, through the introspection program, if the one or more conditions are satisfied by the software component. In another aspect, responsive to the indication, the computing device generates the conditional memory dump through the introspection program.




at

Apparatus and control method

An apparatus includes a first memory, a second memory, a processor configured to perform an initialization process including adding data that generates a first error to initialization data and storing the initialization data together with the added data in the first memory to initialize the first memory, and a controller configured to perform an exchanging process including, when a second error occurs in the second memory during reading or writing data from or to the second memory, copying the data stored in the second memory into the first memory and switching, using a selector, a memory for use in writing and reading data from the second memory to the first memory. The processor is configured to read data from the first memory and the second memory and detect a failure of the selector or a failure of the exchanging process depending on whether the first error occurs or not.




at

Data store capable of efficient storing of keys

Embodiments relate to a computer implemented information processing system, method and program product for data access. The information processing system includes a data store having a top tier store and at least another tier store with the top tier store including a counter for each entry of a symbol and another tier store including a representative frequency value defined for the another tier store. A sorter is also provided configured to sort the symbol in the top tier store and the another tier stores according to a value generated in the counter for the assessed symbol. The said sorter is also configured to restore entry of the symbol in the top tier store, in response to a symbol having moved from said top tier store to another tier store, by using the representative frequency value defined for said another store to which said symbol was moved.




at

Double data rate memory physical interface high speed testing using self checking loopback

A double data rate memory physical interface having self checking loopback logic on-chip is disclosed. Disposed on the chip is a first linear feedback shift register, which is capable of generating a set of test data values that comprise at least two data bits. Also disposed on the chip is a second linear feedback shift register. The second linear feedback shift register is capable of generating a set of expected data values that match the test data values. Further, an internal loopback error check element is disposed on the chip. The internal loopback error check element is used to compare the set of expected data values with the set of test data values.




at

Apparatus and method for testing a memory

An apparatus is equipped with a storage device including an error correction circuit. The apparatus performs a test of the storage device according to a predetermined testing procedure, and records a time-point at which error correction of the storage device has been performed by the error correction circuit during performance of the test. The apparatus determines, with predetermined accuracy, a first position within the storage device on which the error correction has been performed, based on a test speed at which the test is performed, a time-period from the time-point to current time, and a second position within the storage device on which the test is being performed at the current time. Then, the apparatus performs the test predetermined times on a range included in the storage device and including the first position, according to a testing procedure that has been used at the time-point.