...Chester Carlson was a patent agent who tired of having to make multiple copies of patent applications using the only duplication method available at the time: carbon paper. In 1959 he came up with a new copying system and took it to IBM for evaluation. The "experts" at IBM determined potential sales to be only 5,000 units because people wouldn't want to use a bulky machine when they had carbon paper. Carlson's invention was the xerography process, the company founded on the system is Xerox.
Make the Most of Our Site
See this month's Top Inventors and Most Cited Patents.
Stay on top of the latest innovations by subscribing to an RSS feed.
Registered users: Manage your profile.
| Number | Title | Issue Date |
| 8180633 | Fast semantic extraction using a neural network architecture A system and method for semantic extraction using a neural network architecture includes indexing each word in an input sentence into a dictionary and using these indices to map each word to a d-dimensional vector (the features of which are learned). Together with t... | 05/15/2012 |
| 8126710 | Conservative training method for adapting a neural network of an automatic speech recognition device A method of adapting a neural network of an automatic speech recognition device, includes the steps of: providing a neural network including an input stage, an intermediate stage and an output stage, the output stage outputting phoneme probabilities; providing a lin... | 02/28/2012 |
| 7966177 | Method and device for recognising a phonetic sound sequence or character sequence The invention relates to a method for recognizing a phonetic sound sequence or a character sequence, e.g. according to the ASCII standards, comprising the following steps: a) the sequence is fed to a neural network, b) in said neural network, a sequence of character... | 06/21/2011 |
| 7827031 | Method for accelerating the execution of speech recognition neural networks and the related speech recognition device A neural network in a speech-recognition system has computing units organized in levels including at least one hidden level and one output level. The computing units of the hidden level are connected to the computing units of the output level via weighted connection... | 11/02/2010 |
| 7620546 | Isolating speech signals utilizing neural networks A speech signal isolation system configured to isolate and reconstruct a speech signal transmitted in an environment in which frequency components of the speech signal are masked by background noise. The speech signal isolation system obtains a noisy speech signal f... | 11/17/2009 |
| 7617101 | Method and system for utterance verification A method and system for utterance verification is disclosed. It first extracts a sequence of feature vectors from speech signal. At least one candidate string is obtained after speech recognition. Then, speech signal is segmented into speech segments according to th... | 11/10/2009 |
| 7603272 | System and method of word graph matrix decomposition Disclosed is a system and method of decomposing a lattice transition matrix into a block diagonal matrix. The method is applicable to automatic speech recognition but can be used in other contexts as well, such as parsing, named entity extraction and any other metho... | 10/13/2009 |
| 7502736 | Voice registration method and system, and voice recognition method and system based on voice registration method and system Disclosed is a voice registration method for voice recognition, comprising the steps of analyzing a spectrum of a sound signal inputted from the outside; extracting predetermined language units for a speaker recognition from a voice signal in the sound signal; measu... | 03/10/2009 |
| 7444282 | Method of setting optimum-partitioned classified neural network and method and apparatus for automatic labeling using optimum-partitioned classified neural network A method of automatic labeling using an optimum-partitioned classified neural network includes searching for neural networks having minimum errors with respect to a number of L phoneme combinations from a number of K neural network combinations generated at an initi... | 10/28/2008 |
| 7409340 | Method and device for determining prosodic markers by neural autoassociators A neural network is used to obtain more robust performance in determining prosodic markers on the basis of linguistic categories. ... | 08/05/2008 |
| 7379507 | Method and device for modulation recognition of digitally modulated signals with multi-level magnitudes A modulation recognition method and device for digitally modulated signals with multi-level magnitudes are provided. The modulation recognition method includes selecting plural quantization sizes used to construct plural statistic histograms related to the magnitude... | 05/27/2008 |
| 7376553 | Fractal harmonic overtone mapping of speech and musical sounds An apparatus for signal processing based on an algorithm for representing harmonics in a fractal lattice. The apparatus includes a plurality of tuned segments, each tuned segment including a transceiver having an intrinsic resonant frequency the amplitude of the res... | 05/20/2008 |
| 7366244 | Method and system for antenna interference cancellation A wireless communication system can comprise two or more antennas that interfere with one another via free space coupling, surface wave crosstalk, dielectric leakage, or other interference effect. The interference effect can produce an interference signal on one of ... | 04/29/2008 |
| 7359857 | Method and system of correcting spectral deformations in the voice, introduced by a communication network A technique for correcting the voice spectral deformations introduced by a communication network. Prior to the operation of equalization of the voice signal of a speaker, the constitution of classes of speakers is communicated, with one voice reference per class. Th... | 04/15/2008 |
| 7356466 | Method and apparatus for performing observation probability calculations A method and apparatus for calculating an observation probability includes a first operation unit that subtracts a mean of a first plurality of parameters of an input voice signal from a second parameter of an input voice signal, and multiplies the subtraction resul... | 04/08/2008 |
| 7349843 | Automatic call distributor with language based routing system and method A method and system for determining a language of a call handled by an automatic call distributor is disclosed. The method includes the steps of detecting the call, sampling an audio portion of the call, fitting a plurality of templates to the sampled portion of the... | 03/25/2008 |
| 7346497 | High-order entropy error functions for neural classifiers An automatic speech recognition system comprising a speech decoder to resolve phone and word level information, a vector generator to generate information vectors on which a confidence measure is based by a neural network classifier (ANN). An error signal is designe... | 03/18/2008 |
| 7343289 | System and method for audio/video speaker detection A system and method for detecting speech utilizing audio and video inputs. In one aspect, the invention collects audio data generated from a microphone device. In another aspect, the invention collects video data and processes the data to determine a mouth location ... | 03/11/2008 |
| 7330538 | Closed-loop command and response system for automatic communications between interacting computer systems over an audio communications channel A system and method for enabling two computer systems to communicate over an audio communications channel, such as a voice telephony connection. Such a system includes a software application that enables a user's computer to call, interrogate, download, and manage a... | 02/12/2008 |
| 7321882 | Method for supervised teaching of a recurrent artificial neural network A method for the supervised teaching of a recurrent neutral network (RNN) is disclosed. A typical embodiment of the method utilizes a large (50 units or more), randomly initialized RNN with a globally stable dynamics. During the training period, the output units of ... | 01/22/2008 |
| 7321852 | System and method for transcribing audio files of various languages System, method and program product for transcribing an audio file included in or referenced by a web page. A language of text in the web page is determined. Then, voice recognition software of the language of text is selected and used to transcribe the audio file. I... | 01/22/2008 |
| 7319954 | Multi-channel codebook dependent compensation Methods and apparatus, in the context of speech recognition, for compensating in the cepstral domain for the effect of an interfering signal by using a reference signal. ... | 01/15/2008 |
| 7319960 | Speech recognition method and system A speech recognition system uses a phoneme counter to determine the length of a word to be recognized. The result is used to split a lexicon into one or more sub-lexicons containing only words which have the same or similar length to that of the word to be recognize... | 01/15/2008 |
| 7319955 | Audio-visual codebook dependent cepstral normalization An arrangement for yielding enhanced audio features towards the provision of enhanced audio-visual features for speech recognition. Input is provided in the form of noisy audio-visual features and noisy audio features related to the noisy audio-visual features. ... | 01/15/2008 |
| 7318030 | Method and apparatus to perform voice activity detection A method and apparatus to perform voice detection are described. ... | 01/08/2008 |
| 7318022 | Method and apparatus for training a translation disambiguation classifier A method of training a classifier includes applying a first classifier to a first set of unlabeled data to form a first set of labeled data. The first classifier is able to assign data to classes in a first set of classes. A second classifier is applied to a second ... | 01/08/2008 |
| 7310599 | Removing noise from feature vectors A method and computer-readable medium are provided for identifying clean signal feature vectors from noisy signal feature vectors. Aspects of the invention use mixtures of distributions of noise feature vectors and/or channel distortion feature vectors when identify... | 12/18/2007 |
| 7295977 | Extracting classifying data in music from an audio bitstream The method of the present invention utilizes machine-learning techniques, particularly Support Vector Machines in combination with a neural network, to process a unique machine-learning enabled representation of the audio bitstream. Using this method, a classifying ... | 11/13/2007 |
| 7292726 | Recognition of electronic ink with late strokes A method and apparatus relating to the recognition of free-form data input is disclosed. The method involves ordering writing strokes based upon spatial relationships between the strokes, and partitioning the strokes into segments. The segments are then ordered base... | 11/06/2007 |
| 7292982 | Active labeling for spoken language understanding An active labeling process is provided that aims to minimize the number of utterances to be checked again by automatically selecting the ones that are likely to be erroneous or inconsistent with the previously labeled examples. In one embodiment, the errors and inco... | 11/06/2007 |
| 7289957 | Verifying a speaker using random combinations of speaker's previously-supplied syllable units A method for verifying a speaker by a computer is specified in which the speaker utters at least one code word consisting of a random combination of syllable units previously supplied by the speaker. A comparison of this uttered code word with at least one pattern v... | 10/30/2007 |
| 7286990 | Universal interface for voice activated access to multiple information providers An interface for accessing data from one or more information systems using a wireless telephone or other user device. The interface is presented to a user as an abstraction of a unified mailbox and permits access by the user to messaging and other services from the ... | 10/23/2007 |
| 7287015 | Methods and apparatus for transmitting signals through network elements for classification The present invention provides techniques for transmitting at least one signal through an element of a classification system. One or more input signals are received at the element. One or more functional components are extracted from the one or more input signals, a... | 10/23/2007 |
| 7283959 | Compact easily parseable binary format for a context-free grammar A computer-loadable data structure is provided that represents a state-and-transition-based description of a speech grammar. The data structure includes first and second transition entries that both represent transitions from a first state. The second transition ent... | 10/16/2007 |
| 7280961 | Pattern recognizing device and method, and providing medium The silence-acoustic-model correcting division generates a silence acoustic model that is used for recognizing the silent section Ts which exists in the beginning of the speech recognition section, on the basis of the environment noise that is included in the noise ... | 10/09/2007 |
| 7277846 | Navigation system A navigation system includes a speech-recognition unit for performing speech-recognition processing on input speech. The system also includes a language-determining unit for determining the language of a speaker based on the contents of the input speech as recognize... | 10/02/2007 |
| 7277850 | System and method of word graph matrix decomposition Disclosed is a system and method of decomposing a lattice transition matrix into a block diagonal matrix. The method is applicable to automatic speech recognition but can be used in other contexts as well, such as parsing, named entity extraction and any other metho... | 10/02/2007 |
| 7266498 | Method and apparatus for reducing conflicts between speech-enabled applications sharing speech menu Method and apparatus are provided for developing a speech menu which is adapted to store a plurality of sound commands for a speech-enabled application. A first sound command of the plurality of sound commands is compared to a second sound command to determine an ac... | 09/04/2007 |
| 7254536 | Method of noise reduction using correction and scaling vectors with partitioning of the acoustic space in the domain of noisy speech A method and apparatus are provided for reducing noise in a training signal and/or test signal. The noise reduction technique uses a stereo signal formed of two channel signals, each channel containing the same pattern signal. One of the channel signals is “cleanâ... | 08/07/2007 |
| 7254538 | Nonlinear mapping for feature extraction in automatic speech recognition The present invention successfully combines neural-net discriminative feature processing with Gaussian-mixture distribution modeling (GMM). By training one or more neural networks to generate subword probability posteriors, then using transformations of these estima... | 08/07/2007 |