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Matches 951 - 1,000 out of 7,072

Document Document Title
JP3920220B2
De-interleaving and rate de-matching of a demodulated signal are performed by batch process at the receiving side which received a radio signal subjected to interleaving and rate matching at the transmitting side for error correction.  
JP3922979B2
To provide a transmission line encoding method, a decoding method, and an apparatus capable of realizing a low delay and suppressing the degradation of a decoded sound signal without additional redundant bits. An audio encoder 100 conver...  
JP3918034B2
A method and apparatus is disclosed for determining a masked threshold curve as a function of frequency from an information signal. The method includes (a) a first step of determining for each frequency value a first masking component MC...  
JP3911398B2
To provide a time interleave method for minimizing memory size and at the same time processing time, and to provide a time deinterleave method. The amount of memory for storing the modulation symbol of each carrier for time interleave is...  
JP3912389B2
To achieve joining of 1-bit signals produced respectively at different sampling frequencies in an integer multiple relation to each other without causing noise. Upon the receipt of a switching request signal 302, a controller 13 controls...  
JP3907906B2
To solve the problem that an encode characteristics is deteriorated where position candidates at every voice source number are distributed uniformly in a frame, in order to realize the position candidates with a low bit rate, since only ...  
JP3907406B2
To control a UW(unique word) in response to a change of a line status between radio stations, so as for the UW to be optimum for the line status. A line status measuring device 15 measures how serious an error code is generated in a rece...  
JP3901607B2
To provide a signal processing apparatus with a small circuit scale, a non-integral frequency divider and a fractional N PLL (phase lock loop) synthesizer having the same. An adder 8 and a delay device 10 constitute a 9-bit accumulator, ...  
JP2007082253A
To provide a method and apparatus for selecting error correction code rates, in a cellular radio communication system.Each base station broadcasts a power product (PP), which is equal to the base station transmission power PBT, multiplie...  
JP3898218B2
A transmission system for encoded transmission of audio signals with frequency band compression. An input signal to be transmitted is divided into two spectral portions in a coder. One spectral portion is digitally encoded by a time-doma...  
JP3898775B2
To restore a data stream without producing various kinds of noises when a digitized sound is erased during transmission. The information of digital sounds such as voices is generally transmitted by a burst containing the samples of plura...  
JP3895325B2
To provide the delta / sigma modulator which minimizes an effect of a noise by reducing a quantization noise. The delta / sigma modulator comprises a 1-bit quantizer, a N-bit quantizer and an error correction circuit. The quantization no...  
JP3894946B2
To provide a coding device for adjusting a signal rate in a wireless communication system. A coding device includes a coding circuit for converting a digital input into a coded output having a greater number of bits than the input, an in...  
JP2007067797A
To lower the manufacturing cost of a sampling rate converter.The sampling rate converter is provided with a buffer (203) which captures input data, a sampling rate converter core (201) for converting the sampling rate of its output data,...  
JP2007065650A
To provide an infrared filter achieving the reduction of cost and the improvement of optical characteristic, and the shortening of designing time and working time by applying infrared cut coating to the window glass of a camera module an...  
JP3888565B2
To perform pulse density modulation more accurately than a conventional manner in a pulse density modulating device. It is possible to establish linearity between corrected pulse density modulation waveform data SK and its DC component a...  
JP3890605B2
Inputted audio signals are compressed and encoded by a speech encoder (3), sent to an RF transmission processor (4), subjected to channel encoding, modulation and transmission processing, and transmitted through an antenna (11). Signals ...  
JP3888698B2
PURPOSE: To provide a transmission system where an interpolation error is reduced and the audible quality of a reception signal is considerably improved. CONSTITUTION: Only a part of a series of signal samples is transmitted to a receive...  
JP3887028B2
PURPOSE: To obtain a signal, which characterizes each of primary signals from plural signal sources mixed by linear convolution, with a high precision in a small number of signal calculation processing stages. CONSTITUTION: A signal sour...  
JP3886815B2
To provide a voice encoding device, a voice decoding device, a voice encoding method and a voice decoding method which enable reproduction of voice of high quality without increasing the quantity of information to be transmitted. In the ...  
JP2007049723A
To provide a transmission/reception system for transmitting much more information at one and same frequency band by solving impossibility of increasing a transmission information amount when the frequency band is limited in transmission ...  
JP2007049724A
To provide a transmission/reception system for transmitting much more information at one and same frequency band by solving impossibility of increasing a transmission information amount when the frequency band is limited in transmission ...  
JP3883923B2
To provide a correlator in which an SN ratio of the correlator to calculate a correlation with received signals and a template string is improved in an impulse wireless receiver. The product of the received impulse string 500 and the tem...  
JP3880339B2
To provide a device and a method for determining the pulse position of a signal encoded by pulse modulation. In the device and the method for determining pulse position of signal encoded by pulse modulation, a signal can be received as a...  
JP3881679B2
To provide a transmitting/receiving system in which much more information can be transmitted on the same frequency band by solving a problem that a transmission information quantity can not be increased when a frequency band is limited i...  
JP3881680B2
To provide a transmitting/receiving system for transmitting much more information in one and the same frequency band by solving a problem that a quantity of transmission information can not be increased when a frequency band is restricte...  
JP3876781B2
To make it possible to decode voice of high sound quality in each user. A portable telephone set 421-1 encodes user's voice data and outputs the encoded voice data. At the time of no-calling, voice sample data which are not encoded yet a...  
JP2007027806A
To provide a portable terminal device which is provided with a fuel cell and excellent in portability.Two casings are coupled by a coupler 400 so that the device can take a first state in which a display casing 200 and a grip casing 300 ...  
JP3872115B2
PURPOSE: To connect signals without using any large-scaled transformer or capacitor between more than two electric circuits operating with different voltages. CONSTITUTION: A node 911 at a transmission side is connected through an aeries...  
JP2007500986A
A dual-channel network with in each case one communication controller (2, 6) for each of the two channels (A, B). In order to ensure that the two channels (A, B) operate on a temporally matched basis, an exchange of current states ("read...  
JP3870170B2
To provide a radio communication method for extending a digital transmission band by utilizing two different polarized planes and performing amplitude shift modulation by comparison of relative amplitudes in respective polarized planes a...  
JP3869211B2
A pitch search method and device for digitally encoding a wideband signal, in particular but not exclusively a speech signal, in view of transmitting, or storing, and synthesizing this wideband sound signal. The new method and device whi...  
JP3862735B2
To provide a secondary station which communicate a message in an environment which is exposed to fading. At a transmitter, a checksum (CSM) is determined for an encoded and formatted data, and the checksum (CSM) is concatenated with enco...  
JP3862734B2
To provide a system for communicating messages in an environment which is subjected to fading. At a transmitting side, a checksum (CSM) is specified for encoded and formatted data and the checksum (CSM) is added to an address code word (...  
JP3859462B2
To provide an apparatus and a method for analyzing a forecasting parameter with high analysis performance by which the interfusion of an unnecessary component can be suppressed to the minimum. The apparatus, for analyzing the forecasting...  
JP3851130B2
To provide a peripheral device of a portable viewing device excellent in usability and to provide a broadcasting viewing system. A fixed type peripheral device 1 receives broadcasting and stores encoded video data in a memory card 3. A p...  
JP3849914B2
To enable a parallel processing at high speed by preventing access collision while suppressing an increase in storage capacity for a buffer memory. A subband encoder divides an input signal into areas and divides band in a parallel proce...  
JP3849210B2
To enable controlling dynamically quantity of coding information in accordance with the situation, to enable securing a transmission real time characteristic independently of variation of a circuit condition, and to enable varying flexib...  
JP3845505B2
To eliminate noise included in an input 1-bit signal without increasing a degree number by allowing the modulator to have a middle stage mixing means and a final stage mixing means in addition to a quantization means and a 1st stage mixi...  
JP3844352B2
To automatically adjust the synchronization between an amplitude signal and a phase signal in a transmitter such as a polar modulation transmitter. A polar signal generation circuit 101 generates a signal corresponding to the amplitude a...  
JP3842269B2
In a transmitting/receiving apparatus (6) of a transmitting side, a signal from an input terminal (Ti) is inputted to a delta sigma modulator circuit (42), delta-sigma modulated thereby, thereafter packet-divided by a transmitter (12), a...  
JP2006523996A
Sample rate converters ( 12 ) for converting input sample rates (F81) of signals into output sample rates (Fs4) are provided with sample rate adapters ( 3,6 ) for adapting (basic idea) intermediate sample rates (Fs 2 ) such that output s...  
JP3835822B2
The present invention relates to arrangements and methods for radio frequency modulation and power amplification of an information signal (XIF). Modulation and amplification of the information signal (XIF) is carried out with very high l...  
JP3831608B2
To provide improved error detection technology used to process digital audio information received by a digital communication system or information of other types. To control the generation of an error indicator for a packet, control info...  
JP3829853B2
To read out the image of a boundary region faithfully even if the interval of boundary imaging devices is larger than the interval of imaging devices without using interpolation data (data of virtual imaging element). The image sensor di...  
JP3830106B2
An arrangement for determining a signal spectrum of a wideband digital audio signal in an adaptive bitallocation system, including a signal splitting unit for splitting the wideband digital audio signal into M narrow band sub signals (SB...  
JP2006261826A
To provide a receiving apparatus and a receiving method capable of demodulating received data stably even against amplitude variations of a received signal and a code error due to noise.An incidence rate calculation section 140 obtains a...  
JP3827720B2
In a transmission system for transmitting speech and music signals, an input signal is coded in a coder (11) by a time domain coder (4). The output signal of the time domain coder (4) is decoded by a time domain decoder (8) and the signa...  
JP3826185B2
A method to detect a presence of a hangover period in a speech decoder in a communication system that utilizes discontinuous transmission between a transmitter and a receiver. The discontinuous transmission is defined by temporally seque...  
JP3822632B2
[Problems] To realize a reliable and stable transfer of digital data that does not require a reference clock and a handshake operation. [Means for Solving the Problems] The present invention provides a digital data transfer method for al...  

Matches 951 - 1,000 out of 7,072