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| Number | Title | Issue Date |
| 8175867 | Voice communication apparatus A voice communication apparatus includes a communication portion that receives a plurality of frames including at least a first frame having first voice data and a second frame having second voice data subsequent to the first frame, the first voice data and the seco... | 05/08/2012 |
| 7873512 | Sound encoder and sound encoding method Even when a combination of the stegonography technique and prediction encoding is applied to sound encoding, a sound encoder does not cause deterioration in quality of decoded signals. In the device, an encoding section (102) outputs an encoding code (I) to a... | 01/18/2011 |
| 7472057 | Detector for use in voice communications systems One or more methods and systems of detecting or identifying one or more types of algorithms used in the encoding of a voice or speech waveform is presented. The system and method may be used as a testing tool to identify whether a voice data stream is encoded using ... | 12/30/2008 |
| 7391813 | Digital wireless communications device A digital wireless communications device enabling call distance to be increased while avoiding mute processing as far as possible, even if code error occurs in an ADPCM code. The digital wireless communications device may be configured to include: an error detector ... | 06/24/2008 |
| 7366161 | Full duplex voice path capture buffer with time stamp For diagnostic and trouble-shooting purposes, an audio/voice signal capture mechanism is adapted to be interfaced with a time division multiplexed (TDM) transport path-cascaded echo canceler and compression arrangement for an integrated access device (IAD). The audi... | 04/29/2008 |
| 7366162 | Reception apparatus and reception method A multiformat-compatible receiving apparatus is quickly compatible with a change in the signal type of a received signal. Responsive to the detection of a stream change to an invalid data stream (ancillary no data), a signal processing means is controlled to ... | 04/29/2008 |
| 7353170 | Noise-adaptive decoding In one aspect the invention is a method for decoding. The method includes receiving encoded data and decoding the encoded data using a noise-adaptive decoder. The data may include first-order Reed-Mueller (FORM) based codes. The data may be based on Complementary Co... | 04/01/2008 |
| 7343282 | Method for transcoding audio signals, transcoder, network element, wireless communications network and communications system The invention relates to a method for transcoding audio signals in a communications system. In order to improve the inter-operability between units (2,40) capable of handling wideband audio signals and units (3,46) or network components (50) cap... | 03/11/2008 |
| 7336713 | Method and apparatus for encoding and decoding data A DPCM operation which can reduce the size of differential data and a method and an apparatus for encoding data using the DPCM operation are provided. A method for generating differential data includes generating differential data by performing a DPCM operation on q... | 02/26/2008 |
| 7330139 | Scalable audio data arithmetic decoding method, medium, and apparatus, and method, medium, and apparatus truncating audio data bitstream A scalable audio data arithmetic decoding method, medium, and apparatus, and a method, medium, and apparatus truncating an audio data bitstream. The arithmetic decoding method of decoding a scalable arithmetic coded symbol may include arithmetic decoding of a symbol... | 02/12/2008 |
| 7328027 | Method for vocoder selection based on loads in coverage areas of a wireless wide area network The load of a coverage area in a wireless wide area network can be used as a basis to determine which vocoder to use in establishing a call between a wireless device in that coverage area and a wireless device in a different coverage area. If the load of the coverag... | 02/05/2008 |
| 7313419 | Wireless device battery conservation method and system Generally, the present invention provides a method for detecting poor RF conditions, and entering different sleep mode levels or phases in accordance with the RF conditions to save battery power. Mobile device battery life can be conserved when the mobile device det... | 12/25/2007 |
| 7310322 | Method and node for the control of a connection in a communication network In a method for the control of a connection in a communication network comprising a plurality of nodes (MSC, TSN, MG), a connection (CO) is established stepwise between nodes (MSC, TSN, MG). At least two of the nodes (MSC, TSN, MG) are adapted to insert an entity in... | 12/18/2007 |
| 7302387 | Modification of fixed codebook search in G.729 Annex E audio coding ITU Recommendation G.729 Annex E teaches in the implementation of a fixed codebook search to determine the selected sample combination providing the minimal difference between the original input speech and the reconstructed speech after implementation of the codec. ... | 11/27/2007 |
| 7299172 | Systems and methods for sound compression Embodiments of the invention achieve increased compression of audio data in comparison to prior art ADPCM compression schemes using modest processing power and resources. For one embodiment, an asymmetric ADPCM encoding scheme is implemented to increase apparent enc... | 11/20/2007 |
| 7298783 | Method of compressing sounds in mobile terminals A method of compressing sounds in mobile terminals according to the present invention transforms pulse code modulations (PCM) codes, which are source data of bell sounds using recorded sounds or voice memos and are generated by sampling the sounds, through applying ... | 11/20/2007 |
| 7295974 | Encoding in speech compression Linear predictive system with classification of LP residual Fourier coefficients into two or more overlapping classes, and each class has its own vector quantization codebook(s). The use of strong and weak predictors minimizes codebook size by only quantizing the di... | 11/13/2007 |
| 7289461 | Communications using wideband terminals A call setup procedure is presented to permit vocoder bypass, which will allow the transmission of wideband speech packets between wideband terminals over narrowband transmission constraints. In addition, methods and apparatus are presented that allow the conversion... | 10/30/2007 |
| 7286602 | Method of data transmission for N-channel digital data in an M-channel block format An audio data transmitting device with a varying channel count which on the transmission side includes, data of n channels divided into blocks each defined for m channels where n≦m. In addition, prior to a transmission of the audio data, a transmitted-data stream ... | 10/23/2007 |
| 7283639 | Hearing instrument with data transmission interference blocking One aspect relates to a method to block data transmission interference from an input of a receiver in a hearing instrument. In various embodiments, an acoustic-based signal representative of sound received at a microphone system is received. It is determined if a tr... | 10/16/2007 |
| 7277511 | Two-stage non-linear filter for analog signal gain control in an OFDM receiver An analog signal gain control circuit(ASGC) for a digital radio HomePlug orthogonal frequency division multiplexing (OFDM) receiver includes a digital variable gain amplifier (DVGA) to control the gain of a received signal to achieve a desired signal amplitude to ma... | 10/02/2007 |
| 7272567 | Scalable lossless audio codec and authoring tool An audio codec losslessly encodes audio data into a sequence of analysis windows in a scalable bitstream. This is suitably done by separating the audio data into MSB and LSB portions and encoding each with a different lossless algorithm. An authoring tool compares t... | 09/18/2007 |
| 7269551 | Apparatus including an error detector and a limiter for decoding an adaptive differential pulse code modulation receiving signal An apparatus for decoding encoded voice data comprises a demodulator (101) which demodulates the encoded voice data (RF) and provides a demodulated encoded voice data (APO, RD), an adaptive differential pulse code modulation decoder (102) which decodes... | 09/11/2007 |
| 7266131 | Data packet decoding Apparatus and method for generating decoding instructions for a decoder for decoding data packets from a telecommunications network, each of the data packets having a plurality of fields formatted in a predetermined protocol defined by a protocol specification. The ... | 09/04/2007 |
| 7260520 | Enhancing source coding systems by adaptive transposition The present invention relates to a new method for enhancement of source coding systems using high-frequency reconstruction. The invention teaches that tonal signals can be classified as either pulse-train-like or non-pulse-train-like. Relying on this classification,... | 08/21/2007 |
| 7245667 | Method of transmitting data In a data transmission method, the data to be transmitted and/or data corresponding to the same are transmitted via a first transmission channel and in addition via a second transmission channel. The data transmitted via the first transmission channel and the data t... | 07/17/2007 |
| 7240000 | Control of speech code in mobile communications system There is disclosed a method of controlling a speech code of speech communications between mobile terminals via an IP network, between mobile switching centers which are interconnected through the IP network. Two mobile switching centers communicate with each other v... | 07/03/2007 |
| 7233894 | Low-frequency band noise detection A pitch estimation system including a low-frequency band noise detector (LBND) operative to detect the presence of low-frequency band noise in a first audio frame, a frequency-domain pitch estimator operative to calculate a pitch estimation of a second audio frame f... | 06/19/2007 |
| 7206739 | Excitation codebook search method in a speech coding system A method for searching an excitation (or fixed) codebook in a speech coding system. In a speech coding system including a synthesis filter for synthesizing a speech signal, a fixed codebook searcher according to the present invention segments a speech signal frame i... | 04/17/2007 |
| 7205919 | Digital signal processing apparatus and digital signal processing method The present invention aims to realize linking of 1-bit signals having respective sampling frequencies that are different from each other and show a relationship of one equal to integer times of the other without noises. ... | 04/17/2007 |
| 7203637 | Transmission of compressed information with real time requirement in a packet oriented information network The present invention relates to packet-distributed data transmission of compressed data. According to the invention, parity bits are supplied to the compressed data. The parity bits are used in the entire transmission chain between an encoder having compressed the ... | 04/10/2007 |
| 7197093 | Digital signal processing apparatus and digital signal processing method A digital signal of which input data has been segmented as block each having a predetermined data amount and highly efficiently encoded along with an adjacent block is decoded, edited, and then highly efficiently encoded. A delay that takes place in such signal proc... | 03/27/2007 |
| 7193988 | Allocating Abis interface transmission channels in packet cellular radio network The invention relates to a method of allocating Abis interface transmission channels in a packet cellular radio network, and to a network part utilizing the method. The method comprises (502) allocating fixedly a certain number of transmission channels to bas... | 03/20/2007 |
| 7187391 | Projection display apparatus, display method for same and image display apparatus The present invention provides a technology that enables related portions of multiple pages of images to be displayed simultaneously. A projection display apparatus comprises: an image extraction section that extracts at least a portion of given first image data as ... | 03/06/2007 |
| 7171193 | Telecommunications interruption and disconnection apparatus and methods Embodiments of interruption-sound devices for producing an interruption sound signal in a telecommunications transmission signal comprising a signal generator circuit and a processor circuit, in accordance with the present invention. The interruption sound signals a... | 01/30/2007 |
| 7162419 | Method in the decompression of an audio signal The invention relates to a method in the decompression of a compressed audio signal. In the decompression, a predicting coding has been used, wherein samples taken of the audio signal have been formed into frames, and the samples of the frames have been compared wit... | 01/09/2007 |
| 7155384 | Speech coding and decoding apparatus and method with number of bits determination An audio signal coding device, an audio signal decoding device and a method to improve audio quality. The audio signal coding device and method include a quantizer that quantizes a given signal according to a number of assigned bits in order to generate a codeword. ... | 12/26/2006 |
| 7126501 | Floating point type digital signal reversible encoding method, decoding method, devices for them, and programs for them Digital signal samples X in a floating-point format, each of which is composed of 1 bit of sign, 8 bits of exponent E and 23 bits of mantissa M, are converted through rounding by an integer formatting part 12 into digital signal samples Y in an integer format... | 10/24/2006 |
| 7126504 | Methods and systems for filtering unwanted noise in a material metering machine Methods and systems for filtering an analog signal sampled at a very high frequency and outputting a digital signal that has a very low sampling frequency to drive a material metering machine. The high frequency digital input signal is input to a first decimation el... | 10/24/2006 |
| 7113907 | Circuits and methods for reducing pin count in multiple-mode integrated circuit devices A method of controlling a terminal of an integrated circuit includes determining a frequency ratio between a frequency of a signal and a frequency of another signal received by an integrated circuit. A selected signal appearing at a selected terminal of the integrat... | 09/26/2006 |
