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JP3240832B2 |
PURPOSE: To output a sound without cut, delay, erasure vocal sounds. CONSTITUTION: When a decoded sound V3 of a packet P3 is ended, when no decoded sound V4 is obtained due to the delay of the packet P4, an interpolation sound V3' is out...
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JP3241778B2 |
PURPOSE: To transmit transmission information at a prescribed quality level by controlling the switching of the transmission with a constant quantization characteristic or the transmission with a fluctuated quantization characteristic ba...
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JP3241954B2 |
PURPOSE: To generate high speed phasing in a receiver by transmitting signals from two orthogonally polarized antennas so that signals may have offset slightly varying with time between both antennas. CONSTITUTION: A data signal is sent ...
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JP2001352255A |
To provide an operating unit for communication apparatus and a recording medium or an operating method in which trace back processing can be performed by soft input soft output decoding based on Viterbi algorithm.Path determining means 1...
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JP3238448B2 |
PURPOSE: To provide a signal transmission device which easily encodes an analog signal. CONSTITUTION: An analog signal source 10 is connected to an analysis means 12 so that plural parameters are supplied to a bus 14. The analysis means ...
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JP2001343984A |
To improve the quality of hearing sensation of decoded signals and to reduce the amount of computations required for sound/silence discrimination.A voice synthesizer 201 synthesizes decoded voice based on decoded parameters outputted by ...
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JP3236592B2 |
To provide a digital voice coding method improving controlls of filters of a voice encoder without increasing the complexity of the voice encoder accordingly. A single filter providing controls of plural filters without complexity of the...
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JP3236853B2 |
To enable a noise code book search at low calculation cost and to obtain a synthesized voice of high quality by providing a voicedness decision means which decides a voiced sound and outputting a different noise code vector by a noise co...
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JP3236852B2 |
To enable searching of a noise code book with the computational cost of the same order as that in the case of using an algebraic structure sound source in the noise code book and to obtain a synthetic voice having high quality. After a q...
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JP3236849B2 |
To enable searching a noise code book with the computational cost of the same order as that in the case of using an algebraic structure sound source in the noise code book and to obtain a synthetic voice having high quality. A fixed wave...
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JP3236851B2 |
To enable a noise code book search at low calculation cost and to obtain a synthesized voice of high quality by providing a fixed waveform arranging means, etc., which arranges fixed waveforms read out of a fixed waveform storage means a...
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JP3236850B2 |
To enable a noise code book search at low calculation cost and to obtain a synthesized voice of high quality by storing fixed waveforms to a fixed waveform storage means and allowing a fixed waveform arranging means to set and to arrange...
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JP2001339353A |
To provide a smell transmission system where a smell can be transmitted and a transmission destination can reproduce the smell.A transmitter 2 allows a communication section 8 to transmit a signal on which digitized data of smell element...
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JP3235668B2 |
PURPOSE: To provide a digital transmission system with various levels of transmission quality by increasing or decreasing the complication of a circuit on the transmitter side or the receiver side. CONSTITUTION: The digital transmission ...
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JP3234481B2 |
To provide an information transmission system capable of being added to a conventional system and transmitting other kinds of information without requiring a power system for transmission and at low cost. This transmission system is prov...
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JP3235761B2 |
PURPOSE: To reduce quantizing error by providing a quantizing means, inverse quantizing means and error detecting means, comparing block quantizing errors corresponding to quantizing step width and selecting a code with the quantizing st...
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JP3235793B2 |
PURPOSE: To reduce the processing time by adding information of a coded data length discriminated at coding to a compressed data and informing the sum so as to omit the calculation of a code data size through the detection of a delimiter...
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JP3234044B2 |
PURPOSE: To provide a voice communication equipment capable of maintaining improved speech quality by lowering the sense of incongruity of reception voice when pseudo background noise and actual background voice included in input voice s...
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JP2001333024A |
To provide such a transmission system as prevents the occurrence of the undesired behavior of a receiver which is caused in such a manner that the interleave releasing device of the receiver transmits undetermined data to an external err...
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JP2001332975A |
To provide a delta/sigma modulator capable also of dealing with plural communication modes.While using a delta/sigma modulator 100 provided with a communication mode deciding part 60 for deciding plural communication modes and a coeffici...
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JP2001332972A |
To provide a signal processor, capable of performing the A/D conversion of practical multiple bits with inexpensive configuration and simple processing.A dither signal is added to an inputted signal and is over- sampled by an A/D convert...
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JP2001523902A |
A system is provided for the remote control of one computer from another in which selectable compression speeds are utilized to minimize overall screen refresh time. In one embodiment, an algorithm selection module at one computer choose...
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JP3232413B2 |
A communications system wherein an intelligence signal modulates the spacing of relatively narrow pulses of a fixed rate pulse train, and these pulses key on a transmitter which employs a pair of series connected avalanche mode operated ...
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JP3233625B2 |
To provide a sender capable of sending a plurality of data strings by using a plurality of hierarchies including an A-hierarchy and a B-hierarchy. In each of the plurality of hierarchies, a plurality of carriers having mutually orthogona...
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JP3233626B2 |
To provide a transmission system that transmits data streams by using plural layers including layers A and B. Carriers, in a frequency relation orthogonal to each other by each symbol time in each of layers, are modulated by two data str...
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JP2001326619A |
To provide a signal generator that can generate plural clock signals with frequencies using a simple, small scale and inexpensive configuration.Data S1OO are used to sequentially increment storage data in a flip-flop circuit 104 and when...
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JP3230791B2 |
PURPOSE: To restore high quality wide band voice signals without being adversely affected by a nasal sound with a smaller amount of computations. CONSTITUTION: Narrow band voice signals (telephone voice signals) are LPC- analyzed and vec...
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JP3230365B2 |
PURPOSE: To reduce a processing amount at the time of encoding, to simplify constitution and to reduce the cost by performing an actual conversion processing only in a required band and encoding signals based on specified band informatio...
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JP3231036B2 |
To provide a transmitter capable of transmitting a plurality of data strings by using a plurality of hierarchies including an A-hierarchy and a B- hierarchy. In each of the plurality of hierarchies, a plurality of carriers having mutuall...
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JP3231277B2 |
To provide an analog FIFO memory device in which influence on signal components affected by a fixed pattern noise caused inside of an analog FIFO memory can be suppressed. Analog multipliers 21, 26 are provided at an input side and an ou...
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JP3229992B2 |
PURPOSE: To embody the time till when a mute release is performed after a transmission line error is restored in a comparatively short time and to perform a reproduction at almost the same time when video is normally projected. CONSTITUT...
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JP3230790B2 |
PURPOSE: To restore wide band voice signals without extracting the pitch of an input sound signal. CONSTITUTION: Input narrow band signals are LPC-analyzed, quantized by a narrow band code book 103 and decoded by a wide band code book 10...
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JP3231035B2 |
To provide a transmitter capable of transmitting a plurality of data strings by using a plurality of hierarchies including an A-hierarchy and a B-hierarchy. In each of the plurality of hierarchies, a plurality of carriers having mutually...
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JP3230761B2 |
PURPOSE: To improve resisting force to static and interference and to perform communication without noise by interrupting the flow of digital voice data, inserting command data to a data route and transmitting them by an RF link. CONSTIT...
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JP2001320281A |
To expand the error-correcting ability of an entire receiving/decode system by expanding the correcting ability of a Reed-Solomon decoding circuit by generating an erasure flag from a viterbi decoding circuit for decoding the convolution...
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JP2001320279A |
To analyze a frequency by completely making the frequency analysis into narrow band and making it coincident with the limits of the five senses such as hearing and to further improve compressibility by performing most compressed extracti...
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JP3228473B2 |
To enable normal reproduction on a reproduction side even if multiple channels are transmitted selectively through compression or noncompression and down-mixing on the reproduction side is selectively allowed or inhibited. An ATSI includ...
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JP3227615B2 |
PURPOSE: To precisely detect train position by transmitting to a center device the absolute time when the signal wave from a train is received by each relay device together with train position data, and conducting the time correction of ...
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JP3228475B2 |
To normally conduct reproducing at a reproducing side even though multichannel data are selectively transmitted in a compressed or a noncompressed manner and down mixing at the reproducing side is selectively permitted or inhibited. ATSI...
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JP3228474B2 |
To normally conduct reproducing at a reproducing side even though multichannel data are selectively transmitted in either a compressed or a noncompressed manner and down mixing at the reproducing side is selectively permitted or inhibite...
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JP2001313628A |
To perform waveform equalization with high accuracy when connecting and transmitting ISDB-Ts.Information for discriminating whether an adjacent segment is a synchronous segment or a differential segment is described in TMCC information i...
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JP2001313627A |
To perform waveform equalization with high accuracy when connecting and transmitting ISDB-Ts.Information for discriminating whether an adjacent segment is a synchronous segment or a differential segment is described in TMCC information a...
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JP2001521693A |
A method is shown for transmitting a digital data message in time slots within fixed length time frames between a sending unit and a receiving unit. The message is transcoded for transmission according to a transcoding function and when ...
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JP3225644B2 |
PURPOSE: To prevent the occurrence of hunting phenomenon based upon a limit cycle by detecting that an input signal becomes a DC value (including '0') and setting up a value fed back to a quantizer to '0'. CONSTITUTION: An input signal f...
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JP3224926B2 |
PURPOSE: To make a quantization.inverse quantization circuit small by decreasing the area of the circuit. CONSTITUTION: A signal outputted from a DCT circuit 1 is given to a multiplier 11 through a tri-state buffer 2 in the execution of ...
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JP3226537B2 |
PCT No. PCT/EP90/00143 Sec. 371 Date Oct. 1, 1990 Sec. 102(e) Date Oct. 1, 1990 PCT Filed Jan. 26, 1990 PCT Pub. No. WO90/09063 PCT Pub. Date Aug. 9, 1990.Transmitting a signal wherein the signals is segmented by means of windows into su...
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JP2001309375A |
To suppress image deterioration in occurrence of the erroneous transmission of the moving image communication of a video telephone, etc.In media separation processing, when detecting an error in an image signal, a specific code is insert...
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JP2001308804A |
To suppress spurious signals of electronic circuits for performing an interleave operation.This interleaving method having redundancy for parallelly arranging a plurality of substantially same electronic circuits 101, 102 and 103 and per...
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JP2001308919A |
To provide a communication unit that codes voice or other signals into digital information and transmits the information to a data communication network such as the Internet.A coding rate selector 13 selects a coding rate of an output of...
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JP2001306097A |
To provide a voice-encoding system which can output encoded data, having a different sampling frequency and the different number of channels from an input audio signal, without excessively increasing the processing quantity needed for en...
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