Patent application number | Description | Published |
20140036983 | EQUALIZATION DEVICE, RECEPTION DEVICE AND EQUALIZATION METHOD - This equalization device and method, while preventing an expansion of circuit size, enable high-speed detection of a CIR in order to effectively achieve frequency domain equalization even when the phase of the received signal is significantly different from the phase of the known signal, and when the transmission channel has large temporal variations. A reference signal extraction unit ( | 02-06-2014 |
20140192852 | EQUALIZER DEVICE, RECEIVER DEVICE AND EQUALIZATION METHOD - The present invention is provided with: a CIR generating unit which generates an channel impulse response from a received signal; a CIR variation detection unit which uses a plurality of channel impulse responses generated from a plurality of different sections of the received signal by the CIR generating unit to detect an amount of variation in the channel impulse response; an equivalent width control unit which determines an equivalent width corresponding to a signal length used in equalization of the received signal such that the equivalent width is shortened as the amount of variation in the channel impulse response increases; and a waveform equalization unit which uses the channel impulse response generated by the CIR generating unit to equalize the received signal over the equivalent width determined by the equivalent width control unit and generate a demodulated signal. | 07-10-2014 |
20140341324 | RECEPTION DEVICE AND RECEPTION METHOD - A reception device includes signal receiving units that generate received signals from signals obtained by receiving a transmitted signal at antennas, signal processing units that perform processes of generating received frequency domain signals by transforming the received signals to signals in the frequency domain, calculating channel impulse responses of the received signals, calculating estimated received signals from the channel impulse responses, and calculating residual error weights with values that decrease with increasing differences between the received signals and the estimated received signals, a combining ratio calculation unit that calculates combining ratios for the received frequency domain signals such that the ratios decrease as the residual error weights decrease, a diversity combining unit that combines the received frequency domain signals according to the combining ratios to generate a diversity combined signal, and an inverse Fourier transform unit that transforms the diversity combined signal to a time domain signal. | 11-20-2014 |
Patent application number | Description | Published |
20100187706 | WET GRANULATION TABLETING METHOD USING AQUEOUS DISPERSION OF LOW-SUBSTITUTED HYDROXYPROPYL CELLULOSE - Provided is a method for preparing a tablet having high tablet hardness and an excellent disintegration property even if low-substituted hydroxypropyl cellulose is added in a relatively small amount. More specifically, provided is a method for preparing a tablet comprising steps of granulating while spraying an aqueous dispersion of low-substituted hydroxypropyl cellulose having a degree of hydroxypropoxyl group substitution ranging from 5 to 16% by weight to a tablet-forming composition and tableting the resulting granules. | 07-29-2010 |
20110311712 | CAPSULE COMPRISING LOW-SUBSTITUTED CELLULOSE ETHER AND METHOD FOR PREPARING THE SAME - A capsule with good disintegration properties that can quickly display its content's efficacy as well as a method for preparing the same are provided. More specifically, provided is a capsule comprising a shell comprising low-substituted cellulose ether. Also, provided is a method for preparing a hard capsule comprising the low-substituted cellulose ether comprising a step of covering a pin for forming the hard capsule with the low-substituted cellulose ether by immersing the pin in an alkaline solution of the low-substituted cellulose ether; a step of forming the low-substituted cellulose on a surface of the pin into a gel by further immersing the covered pin in an aqueous acid solution; a step of washing by immersing the pin whose surface has been covered with the gel in water; and a step of drying. | 12-22-2011 |
20130338238 | METHOD OF PREPARING COMPOSITE GRANULE COMPRISING LOW-SUBSTITUTED HYDROXYPROPYL CELLULOSE AND RAPID RELEASE PREPARATION - Provided is a base material for dry direct tableting, the material being excellent in a binding property and disintegrability. More specifically, provided is a method of preparing a composite granule comprising at least a step of granulating a second sugar or sugar alcohol while adding thereto an aqueous dispersion comprising at least low-substituted hydroxypropyl cellulose having a degree of hydroxypropoxy substitution of 5 to 16% by weight, polyvinyl alcohol, a first sugar or sugar alcohol, and water. | 12-19-2013 |
20140199406 | Coating Composition, Drug-Containing Particle, Solid Preparation and Method for Preparing Drug-Containing Particle - Provided are a drug-containing particle capable of suppressing dissolution of a drug in the oral cavity to suppress an unpleasant taste thereof and having excellent dissolution of the drug in the digestive tract after passing through the oral cavity; a method for preparing the drug-containing particle; a coating composition used for preparing the drug-containing particle; and a solid preparation having the drug-containing particle. More specifically, provided are a coating composition having 100 parts by weight of a cellulose-based enteric base and 50 parts by weight or less of a water-soluble cellulose ether; a drug-containing particle having a drug-containing core and a coat portion obtained by coating the core with the coating composition; a solid preparation having the drug-containing particle; and a method for preparing a drug-containing particle having a step of coating the drug-containing core with the coating composition. | 07-17-2014 |
20140357681 | Composition for Hot-Melt Extrusion and Method for Producing Hot-Melt Extrusion Product Using Same - Provided are a composition for hot-melt extrusion which can be hot-melt extruded at a temperature lower than a conventional temperature and therefore free of heat-induced deactivation of a drug; and a method for producing a hot-melt extrusion product which is simpler than a spray-drying method. More specifically, provided is a composition for hot-melt extrusion including a drug and hypromellose acetate succinate (HPMCAS) having a hydroxypropoxy molar substitution of 0.40 or more. Also provided is a method for producing a hot-melt extrusion product including a step of hot-melt extruding a composition for hot-melt extrusion including a drug and hypromellose acetate succinate having a hydroxypropoxy molar substitution of 0.40 or more at a hot-melt temperature of melting temperature of the hypromellose acetate succinate or higher, or at a hot-melt temperature equal to or higher than a temperature at which both the hypromellose acetate succinate and the drug become melted. | 12-04-2014 |
Patent application number | Description | Published |
20110230656 | Low-Substituted Hydroxypropylcellulose and Solid Preparation Comprising the Same - Provided is nonionic and excellently stable low-substituted hydroxypropylcellulose having improved compressibility and flowability, and further having improved disintegration and texture in oral cavity. More specifically provided is low-substituted hydroxypropylcellulose having a crystallinity of 60% or less, a degree of hydroxypropoxyl substitution of 5 to 9% by weight, and an aspect ratio of less than 2.5, wherein the crystallinity is calculated based on a diffraction intensity by wide-angle X-ray diffraction measurement according to the following formula (1): | 09-22-2011 |
20110236562 | FILM PREPARATION AND PROCESS FOR PREPARING THE SAME - An object is to provide a film preparation comprising a polymer harmless to living bodies and being highly adhesive to the skin; and a film preparation further containing a pharmaceutically active oily ingredient and being highly adhesive to the skin. More specifically, provided is a film preparation comprising a drug, a wetly shear-triturated low-substituted cellulose ether having a molar substitution of from 0.05 to 1.0 per anhydrous glucose unit, and a water-soluble cellulose ether, and having 100 minutes or greater of adhesion ability to the skin. The preparation becomes a skin-adhesive hydrous sheet having excellent skin adhesion after it is wet with water as it is used. | 09-29-2011 |
20130316176 | LOW-SUBSTITUTED HYDROXYPROPYLCELLULOSE POWDER - Provided is a low-substituted hydroxypropylcellulose powder having high compressibility, good flowability and excellent disintegration. The powder has an average particle size of 10 to 100 μm and a specific surface area measured by BET method of at least 1.0 m | 11-28-2013 |
20150044289 | HYPROMELLOSE ACETATE SUCCINATE FOR USE AS HOT-MELT EXTRUSION CARRIER, HOT-MELT EXTRUSION COMPOSITION, AND METHOD FOR PRODUCING HOT-MELT EXTRUDATE - Provided are hypromellose acetate succinates (HPMCAS) for use as a hot-melt extrusion carrier having a volume average particle size (D | 02-12-2015 |