Patent application number | Description | Published |
20090176869 | Halogenated Rhodamine Derivatives and Applications Thereof - Compounds of formula I: | 07-09-2009 |
20110021616 | HALOGENATED RHODAMINE DERIVATIVES AND APPLICATIONS THEREOF - Methods for treating a bacterial infection in a tissue sample are described. Tissue samples that are harvested from a patient may be infected with bacteria. A rhodmaine compound is mixed with the infected tissue sample to form a mixture. The mixture is then exposed to radiant energy to inhibit or kill the bacteria. The exposed mixture is then transplanted into the patient. Examples of rhodamine compounds include 2′-(6-dimethylamino-3-dimethylimino-3H-xanthen-9-yl) 4′, 5′-dichloro-benzoic acid methyl ester hydrochloride; 4,5-dibromorhodamine 110 2-(2-methoxy ethoxy)ethyl ester hydrobromide; acetate salt of 2,7-dibromorhodamine B hexyl ester; acetate salt of 2,7-dibromorhodamine B methyl ester; 4,5-dibromorhodamine 6G hydrobromide; rhodamine B 3-bromopropyl; acetate salt of 2,7-dibromo-4′-carboxytetramethylrosamine methyl ester; 4-bromo-5-phenyl rhodamine B methyl ester chloride; 2,7-dibromo-4,5-dimethyl rhodamine B methyl ester bromide; 2-bromo-7-ethynyl rhodamine B methyl ester bromide; and 4,5-dibromo-2,7-di-n-butyl rhodamine B methyl ester bromide. | 01-27-2011 |
20140314720 | HALOGENATED RHODAMINE DERIVATIVES AND APPLICATIONS THEREOF - Methods for treating an infection in a tissue sample are described. Tissue samples that are harvested from a patient may be infected with either bacteria or a virus. A rhodamine compound is mixed with the infected tissue sample to form a mixture. The mixture is then exposed to radiant energy to inhibit or kill the bacteria. The exposed mixture is then transplanted into the patient. The rhodamine compounds may be 2′-(6-dimethylamino-3-dimethylimino-3H-xanthen-9-yl)4′,5′-dichloro-benzoic acid methyl ester hydrochloride. | 10-23-2014 |
Patent application number | Description | Published |
20100292993 | Method and Device for Efficient Quantization of Transform Information in an Embedded Speech and Audio Codec - A method and device for coding an input sound signal in at least one lower layer and at least one upper layer of an embedded codec while reducing a quantization noise comprises, in the at least one lower layer, coding the input sound signal to produce coding parameters, wherein coding the input sound signal comprises producing a synthesized sound signal. An error signal is computed as a difference between the input sound signal and the synthesized sound signal and a spectral mask is calculated as a function of a spectrum related to the input sound signal. In the at least one upper layer, the error signal is coded to produce coding coefficients, the spectral mask is applied to the coding coefficients, and the masked coding coefficients are quantized. Applying the spectral mask to the coding coefficients reduces the quantization noise produced upon quantizing the coding coefficients. Therefore, a method and device for reducing the quantization noise produced during coding of the error signal in the at least one upper layer comprises providing the spectral mask and, in the at least one upper layer, applying the spectral mask to the coding coefficients prior to quantizing the coding coefficients. | 11-18-2010 |
20110046947 | System and Method for Enhancing a Decoded Tonal Sound Signal - A system and method for enhancing a tonal sound signal decoded by a decoder of a speech-specific codec in response to a received coded bit stream, in which a spectral analyser is responsive to the decoded tonal sound signal to produce spectral parameters representative of the decoded tonal sound signal. A quantization noise in low-energy spectral regions of the decoded tonal sound signal is reduced in response to the spectral parameters produced by the spectral analyser. The spectral analyser divides a spectrum resulting from spectral analysis into a set of critical frequency bands each comprising a number of frequency bins, and the reducer of quantization noise comprises a noise attenuator that scales the spectrum of the decoded tonal sound signal per critical frequency band, per frequency bin, or per both critical frequency band and frequency bin. | 02-24-2011 |
20110125505 | Method and Device for Efficient Frame Erasure Concealment in Speech Codecs - A method and device for concealing frame erasures caused by frames of an encoded sound signal erased during transmission from an encoder to a decoder and for recovery of the decoder after frame erasures comprise, in the encoder, determining concealment/recovery parameters including at least phase information related to frames of the encoded sound signal. The concealment/recovery parameters determined in the encoder are transmitted to the decoder and, in the decoder, frame erasure concealment is conducted in response to the received concealment/recovery parameters. The frame erasure concealment comprises resynchronizing, in response to the received phase information, the erasure-concealed frames with corresponding frames of the sound signal encoded at the encoder. When no concealment/recovery parameters are transmitted to the decoder, a phase information of each frame of the encoded sound signal that has been erased during transmission from the encoder to the decoder is estimated in the decoder. Also, frame erasure concealment is conducted in the decoder in response to the estimated phase information, wherein the frame erasure concealment comprises resynchronizing, in response to the estimated phase information, each erasure-concealed frame with a corresponding frame of the sound signal encoded at the encoder. | 05-26-2011 |
20120101813 | Coding Generic Audio Signals at Low Bitrates and Low Delay - A mixed time-domain/frequency-domain coding device and method for coding an input sound signal, wherein a time-domain excitation contribution is calculated in response to the input sound signal. A cut-off frequency for the time-domain excitation contribution is also calculated in response to the input sound signal, and a frequency extent of the time-domain excitation contribution is adjusted in relation to this cut-off frequency. Following calculation of a frequency-domain excitation contribution in response to the input sound signal, the adjusted time-domain excitation contribution and the frequency-domain excitation contribution are added to form a mixed time-domain/frequency-domain excitation constituting a coded version of the input sound signal. In the calculation of the time-domain excitation contribution, the input sound signal may be processed in successive frames of the input sound signal and a number of sub-frames to be used in a current frame may be calculated. | 04-26-2012 |
20130121508 | Non-Speech Content for Low Rate CELP Decoder - A method and device for modifying a synthesis of a time-domain excitation decoded by a time-domain decoder, wherein the synthesis of the decoded time-domain excitation is classified into one of a number of categories. The decoded time-domain excitation is converted into a frequency-domain excitation, and the frequency-domain excitation is modified as a function of the category in which the synthesis of the decoded time-domain excitation is classified. The modified frequency-domain excitation is converted into a modified time-domain excitation, and a synthesis filter is supplied with the modified time-domain excitation to produce a modified synthesis of the decoded time-domain excitation. | 05-16-2013 |
20140249807 | DEVICE AND METHOD FOR REDUCING QUANTIZATION NOISE IN A TIME-DOMAIN DECODER - The present disclosure relates to a device and method for reducing quantization noise in a signal contained in a time-domain excitation decoded by a time-domain decoder. The decoded time-domain excitation is converted into a frequency-domain excitation. A weighting mask is produced for retrieving spectral information lost in the quantization noise. The frequency-domain excitation is modified to increase spectral dynamics by application of the weighting mask. The modified frequency-domain excitation is converted into a modified time-domain excitation. The method and device can be used for improving music content rendering of linear-prediction (LP) based codecs. Optionally, a synthesis of the decoded time-domain excitation may be classified into one of a first set of excitation categories and a second set of excitation categories, the second set including INACTIVE or UNVOICED categories, the first set including an OTHER category. | 09-04-2014 |