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JP3704730B2 |
PURPOSE: To simplify the classification circuit by collecting data subjected to 1-bit quantization by a certain tap number and using the data for a class code of an input picture element. CONSTITUTION: Received 8-bit picture elements (Da...
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JP3703657B2 |
To provide a pre-data rate determining method for determining the data rate of received data through the use of quality information (symbol error rate) of data which are pre-processed and decoded into each data rate after executing pre-p...
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JP2005260584A |
To provide a turbo decoder capable of enhancing the transmission efficiency.A soft decision unit 115 carries out soft decision decoding by using an interleave processing result (data sequence X') of a data sequence X in a received sequen...
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JP3694059B2 |
PURPOSE: To improve recovery of each signal in a transmission signal including a superimposed signal of a pair of signals by using specified linear prediction in a receiver. CONSTITUTION: A receiving signal 130 is demodulated to coherent...
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JP3693636B2 |
To solve the problem that, if an error occurs once in a variable-length code string of video signals to be transmitted, it may be not only decoded to different code words but the boundary to the next code word may not be correctly recogn...
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JP3690591B2 |
To provide an encoding device which has been made able to suppress increase in quantization noise due to the switching of the kind of an object signal to be encoded in a unit block where encoding is carried out. The bit rate in encoding ...
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JP3686811B2 |
To resolve the problem that communication abnormality occurs to disable FAX communication because procedures different from conventional communication procedures are adopted for communication between FAX terminals dealing with the V.34 m...
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JP3685812B2 |
PURPOSE: To supply a received voice with high articulation by easily controlling the received sound volume. CONSTITUTION: A VSELP encoder 3 encodes a voice signal subject to high efficiency coding through digital signal processing. A noi...
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JP3683399B2 |
To increase the data transfer rate by receiving some of information signals to encode them by the multi-chip codes of prescribed length, generating a stream of sequences of the prescribed length of a spectrum diffusion code position modu...
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JP2005524370A |
A method to increase the available bandwidth across a wired network is provided. The method includes transmitting an ultra-wideband signal across the wired network. One embodiment of the present invention may transmit a multiplicity of u...
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JP3681386B2 |
Improved proprecessing and postprocessing for vector quantization, for example, for encoding an image. In one embodiment, the luminosity of the vectors in an image are used to determine the codes for vector quantization. In another embod...
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JP3679019B2 |
To provide a method or decoding an uplink status flag(USF) in a radio communication service. This method for decoding an uplink status flag having reduced interleaving depth in an RLC/MAC block in a GPRS, supplies all uplink status flags...
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JP3679809B2 |
A method and apparatus for mitigating error in a received communications signal includes an error mitigator (35) of a communication unit (12) which receives and performs mitigation based on an error indication. In a first embodiment the ...
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JP3675480B2 |
PCT No. PCT/FI95/00390 Sec. 371 Date Jun. 20, 1996 Sec. 102(e) Date Jun. 20, 1996 PCT Filed Jul. 5, 1995 PCT Pub. No. WO96/02091 PCT Pub. Date Jan. 25, 1996A method and apparatus for speech transmission in a telecommunications system in ...
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JP3677142B2 |
To provide a synchronous detector low in cost and reduced in power consumption by performing gain control for fixing a detection level independently of an input level after detection. In this synchronous detector by which AGC is performe...
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JP3667336B2 |
During recording of an MPEG information signal on a record carrier (40), transport packets (Pk) are stored in signal blocks in a track (1) on the record carrier (40). x transport packets of the MPEG information signal are stored in the s...
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JP3666430B2 |
To easily realize high performance encoding that improves the degree of freedom to design. In a data transmission and reception system, a transmitter 10 is provided with converters 110, 111 and 112 for converting information bit sequence...
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JP3665409B2 |
To provide a DSP and/or ADPCM transcoder which has low current consumption and high performance. A digital signal processor 10 contains a 1st data bus 12, a 1st instruction bus 14, a program control unit 16, an arithmetic unit 18 and a m...
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JP3661875B2 |
When one vocoding system is coupled to another vocoding system, a tandem arrangement results. The tandem configuration results in voice quality degradation as speech is encoded and decoded, then encoded and decoded again. One reason for ...
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JP2005151171A |
To obtain a method of performing internet data communication with the other apparatus and equipment needing data communications after connecting them via a single hardware-like circuit, using a wireless data communication network and a w...
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JPWO2003067840A1 |
The wireless information communication device according to the present invention includes an analog pulse modulator (14, 26) that samples an analog information signal by modulation processing according to a predetermined analog pulse mod...
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JP3653741B2 |
PURPOSE: To record/reproduce without hindrance even when a sampling frequency is indivisible by a frequency of a recording reference signal. CONSTITUTION: An edge detection circuit 23 detects a rising edge and/or a falling from the suppl...
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JP3653613B2 |
To provide a decision variable calculation unit in a mobile communication system, that can reduce power required for decision variable calculation so as to attain high-speed cell searching. The decision variable calculation unit in the m...
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JP2005515683A |
A direct down conversion receiver includes a signal filter having a selectable frequency response for receiving an input signal. The filtered signal is amplified by a variable gain amplifier, and the amplified signal is received as input...
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JP3649854B2 |
To reproduce a signal without having feeling of interruption in speech even when an error that is not correctable is continuously detected in a voice encoder which is used on a transmission path that has many bit errors. An error correct...
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JP3648748B2 |
PURPOSE: To compress and transmit a wide-band signal like a high definition television signal. CONSTITUTION: In a reproducing system, average error data ε constituting block data SD inputted from an input terminal 33 is supplied to an e...
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JP3648931B2 |
To effectively code various sounds meaningful to human such as music and imitation sound as well as human voice with a high compression ratio. An IFS(Iterative-mapping Function System) code generating means 2 extracts the original voice ...
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JP3645819B2 |
To provide a digital normalization circuit which facilitates changing the variable width of input data and the number of bits of input/output data and simplifies circuit configuration, to make a circuit scale small in the case of digital...
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JP2005117670A |
To provide a weighted secret sharing and a reconstruction method.The secret sharing method includes a step to code a secret information by a prescribed code, a step to generate a voice which becomes a weight for weighting error, dependin...
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JP2005512208A |
The present invention provides methods and apparatus to protect user privacy while accessing information in public places, using both public and personal devices. This is achieved by employing a mechanism that prevents private informatio...
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JP3643993B2 |
To reduce the circuit scale when an orthogonal modulation signal is demodulated by digital processing. The circuit is provided with a band pass filter 1 receiving an orthogonal modulation signal with a carrier frequency Fc, an A/D conver...
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JP3643834B2 |
To provide a transmitting apparatus for particularly realizing compatibility of NTSC broadcasting and HDTV broadcasting in satellite broadcasting and remarkably reducing unreceivable zones within service areas of ground broadcasting in a...
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JP3643833B2 |
To make an NTSC broadcasting compatible with an HDTV broadcasting in satellite broadcasting particularly, and to drastically reduce an reception impossible area in the service area of ground broadcasting by modulating a carrier wave in a...
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JP3643836B2 |
To provide a transmitter capable of compatibly satisfying an NTSC broadcasting and an HDTV broadcasting particularly in a satellite broadcasting and drastically reducing unreceivable zones within service areas of ground broadcasting in a...
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JP3643832B2 |
To provide compatibility of NTSC broadcasting and HDTV broadcasting particularly in a transmitting apparatus for modulating a carrier wave to transmit a digital signal, and a transmitting apparatus for remarkably decreasing areas where r...
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JP3643835B2 |
To provide a transmitting apparatus for particularly realizing the compatibility of NTSC broadcasting and HDTV broadcasting in satellite broadcasting and for remarkably reducing unreceivable zones within service areas of ground broadcast...
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JP3640666B2 |
PCT No. PCT/DE92/00855 Sec. 371 Date Apr. 15, 1994 Sec. 102(e) Date Apr. 15, 1994 PCT Filed Oct. 6, 1992 PCT Pub. No. WO93/08482 PCT Pub. Date Apr. 29, 1993A method for reducing frequency crosstalk in the transmission of digitized audio ...
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JP3636383B2 |
PURPOSE: To generate only a minimum influence upon an audio signal by detecting even an extremely small fault in a received bit block as well in audio signal transmission between two stations. CONSTITUTION: A channel decoder 24 supplies ...
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JP3636684B2 |
To provide an interleaver for a turbo coder in UMTS and a method for performing interleaving. The interleaver for the turbo coder consists of a register part 200 for update-storing various kinds of variable data for setting an interleave...
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JP3632206B2 |
To provide a turbo decoder and a turbo decoding method capable of reducing a bit error rate. A low reliability information storage memory 551 or 552 stores only d pieces of information in order from the lowest reliability out of reliabil...
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JP3630686B2 |
Apparatus for sampling a signal parameter of a plurality of data signals is disclosed which comprises a plurality of sources (5) of data signals. Each data signal includes sequential groups of data. Each group of data in all of the data ...
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JP2005507211A |
A mobile wireless terminal (MWT) receives IP packets destined for a ground network in a predetermined sequence order. The MWT fragments each of the IP packets into many smaller packet fragments, appends identifying information to each of...
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JP3623609B2 |
To provide an adaptive quantization orthogonal transfrmoation coding system which can improves the dynamic range of a quantization characteristic with a small number of bits and excels in transient response characteristics. A subtracter ...
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JP2005045651A |
To prevent the generation of an abnormal sound at the moment of silence during performing muting, in a signal generator for generating voice signals of various frequencies according to a control signal.The signal generator comprises an a...
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JP2005033581A |
To provide a phase synchronization loop type frequency synthesizer of a fractional-N method operating with a high speed and stability.There is provided the phase synchronization loop type frequency synthesizer of a fractional-N method co...
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JP3613303B2 |
To greatly decrease the amount of accumulation for the method and the device of the system in which compressed and coded voice information is transmitted and received. The voice information, which is compressed and coded by a voice codin...
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JP3613537B2 |
To prevent decoding from being faulty (e.g. to prevent voice interruption of an output voice signal from being caused) even when a relative error is produced between a bit rate of input data to a decoder and a sampling rate of output dat...
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JP3614762B2 |
To perform data transmission in a state wherein the quantity and place of a state wherein a spectrum is null are unknown by generating a plurality of images, assigning a frequency different from those of other images to each image, and c...
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JP3611875B2 |
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JP3611358B2 |
PURPOSE: To transmit a signal regenerated from a medium recorded at a variable compression rate to a device recording/reproducing at a fixed compression rate. CONSTITUTION: The video data 201-205 are the data of every frame, and are comp...
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