Matches 301 - 350 out of 437 < 1 2 3 4 5 6 7 8 9 >
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5760717 Method and circuit arrangement for the generation of a channel-coded binary signal  
Low-redundancy codes are increasingly being striven for, such codes thus inevitably requiring comparatively long code words. However, since the memory requirement for coding tables increases...
5742773 Method and system for audio compression negotiation for multiple channels  
Modem-equipped computers which can initiate an audio channel using the modem data connection. The connection is initiated with a new protocol called the voice-over-data protocol. The new protocol...
5734682 Method for increasing transmission rate  
The off-state of the binary transitions is used in order to possibly generate symmetrical transitions of the active state of the binary transitions in relation to the off-state, in order to replace...
5731770 Digital data buffering device  
When digital audio data is input, the data is temporarily stored in a ring buffer memory. A clock generator adjusts an output transfer clock cycle so that the difference between the count of an...
5731769 Multi-rate digital filter apparatus and method for sigma-delta conversion processes  
Data converter (10, 50, 150, 200) and method (250, 300) operate at variable sampling rates. Input gain stage (12) adjusts input bit stream (18) at an input bit rate (20) to produce gain adjusted...
5729225 Method and apparatus for asynchronous digital mixing  
An asynchronous digital mixer (20) receives digitally sampled audio signal data at different unrelated asynchronous sampling rates. The audio data is then edge synchronized and mixed using a...
5729228 Parallel compression and decompression using a cooperative dictionary  
A method and apparatus for compressing a block of data using a shared dictionary. Data to be compressed is divided into subblocks which are each provided to a respective compressor in a plurality...
5729224 Code conversion and demodulation apparatus, a method thereof, and a recording medium  
Source data each consisting of m-bits can be converted into conversion codes each consisting of n (>m) bits with ease, and reverse conversion thereof can be performed with ease. The code...
5715252 High rate data transmission circuit  
A 1:N divider 40 divides an input high rate data signal into N (N being 2 or greater integer) division data signals. Data transmission rate converters 70 1 -70 N for converting the transmission...
5712635 Digital to analog conversion using nonuniform sample rates  
A method and apparatus for digital to analog conversion using sigma-delta modulation of the temporal spacing between digital samples. The method and apparatus of the present invention provides for...
5708683 Symbol rate conversion method for CDPD demodulator  
A method of converting GMSK modulated signals arriving at an integer multiple of the IS-54 standard sampling (or symbol) rate (24.3 KHz) to GMSK modulated signals at an integer multiple of the CDPD...
5661478 Conversion between analogue and digital signals  
Analogue to digital (A/D) and digital to analogue (D/A) converters perform the required conversion at a higher sampling rate (e.g. 64Fs) and a lower resolution (e.g. 1 to 4 bits) than the actual...
5659577 Apparatus for generating a digital recording signal which avoids the generation of false synchronization bit patterns  
In a digital information modulating apparatus, first information signal is separated every m bit or bits, and n bit or bits are added to the head of every m bit or bits to change every m bit or...
5657261 Interpolation of digital signals using signal sample replication  
A filtering technique that results in improved performance of interpolating filters. The improved filter and technique replicates samples of the digital input signal instead of inserting zeroes...
5657015 Method and apparatus of rate conversion for coded video data  
Picture coded data that are obtained by coding at a coding rate R1 that is input via a coded data input terminal 1 are supplied to a variable length decoder. The variable length decoder decodes...
5633634 Data rate conversion circuit  
A data conversion circuit that acts as an interface between components or systems having different data input/output rate requirements. A circuit reads data transmitted at one bit rate and...
5633472 Method and system using pathnames to specify and access audio data at fidelity levels other than the level at which the data is stored  
A method and system for dynamically converting audio data into a standard format. The method and system also provides for using a directory hierarchy to specify a fidelity level and dynamically...
5633633 Codec apparatus  
A codec apparatus is for converting an analog signal to a digital signal, and for decoding the digital signal to an analog signal. The codec apparatus includes a detection device for discriminating...
5623512 Rate converting device capable of determining a transmission rate as desired  
On converting an input data signal having a first transmission rate into an output data signal having a second transmission rate different from the first transmission rate, the input data signal is...
5621404 Digital-to-digital sample rate converter  
A digital-to-digital sample rate converter for converting digital input signals x(n) having a first sample rate F into digital output signals y(m) having a second sample rate FL/M, wherein L/M...
5619197 Signal encoding and decoding system allowing adding of signals in a form of frequency sample sequence upon decoding  
In a signal compressing and encoding apparatus, a plurality of A/D converters sample input audio signals synchronously to produce time sample sequences. An audio encoding circuit transforms the...
5613084 Interpolation filter selection circuit for sample rate conversion using phase quantization  
A filter selector generates a filter address value to select one of a number of frequency characteristics of a filter to resample a first data signal from a first segment of data in order to...
5612975 Digital receiver for variable data rate communications  
A digital receiver includes a tuner and a demodulator that obtains a modulated signal carried in a received analog signal. A digital-to-analog converter operates at a preselected fixed sampling...
5610942 Digital signal transcoder and method of transcoding a digital signal  
A method and device for transcoding a digital signal first oversamples the input signal, converts the sampling rate to an oversampled output signal, filters the signal to reduce unwanted bands and...
5606319 Method and apparatus for interpolation and noise shaping in a signal converter  
A D/A converter (10) converts a digitized analog signal (32) to an analog signal (50). The D/A converter (10) includes first filtering stage (12), second filtering stage (14), and reduced-bit D/A...
5602762 Digital sample rate conversion  
A rate converter for digitally converting the sample rate of a signal, has a first digital filter for deriving an intermediate signal at increased sample rate and a second digital filter for...
5600318 Seismic data acquisition system  
The present invention is a method of processing digitized signal samples generated by a free running analog-to-digital converter and sampled at a first sample rate. The method includes the steps of...
5600320 Variable sample rate DAC  
A method and apparatus for digital-to-analog conversion using sigma-delta modulation of the temporal spacing between digital samples are provided. The method and apparatus include sigma-delta...
5585794 Electronic device for the automatic conversion of sampled frequencies  
An electronic device for the automatic conversion of sampling frequencies, being a type adapted to convert a predetermined frequency of a sampled input signal to a desired frequency of an output...
5559513 Digital sampling rate converter  
A sample rate converter includes a first interpolator which generates samples intermediate samples provided at a first sample rate. A second interpolator, using the intermediate samples, generates...
5543792 Method and apparatus to enhance the efficiency of storing digitized analog signals  
A sampler develops a digital representation of an analog signal at a predetermined sampling rate. The highest frequency of a period of samples is determined and, if sampling rate of the sampler...
RE35254 Conversion device for doubling/dividing the rate of a serial bit stream  
A device for doubling or dividing by 2 the flow rate of series bits comprising a succession of first one-bit registers (R4-R0) actuated at a frequency F; a second register (R) actuated at a...
5519395 Digital recording and reproduction device  
A digital recorder which includes an A/D converter for converting analog signal to digital form for recording and a D/A converter for converting recovered recorded digital information to analog...
5512894 Rate converter for converting data rate  
A rate converter for converting data rate is adapted to hold, at an output clock rate, by using a plurality of latch circuits, respective signals from the output stages of a shift register...
5512895 Sample rate converter  
Method and apparatus for digital sample rate conversion. A mixed signal tester employing digital sample rate conversion is also disclosed. According to the invention, variable phase jitter is...
5513209 Resampling synchronizer of digitally sampled signals  
A digital resampling system is provided for converting a first digital signal to a second digital signal, where both signals represent the same analog signal but sampled at two different clock...
5497152 Digital-to-digital conversion using non-uniform sample rates  
A method and apparatus for digital-to-digital conversion using sigma-delta modulation of the temporal spacing between digital samples. The method and apparatus of the present invention provides for...
5489903 Digital to analog conversion using non-uniform sample rates  
A method and apparatus for digital to analog conversion using sigma-delta modulation of the temporal spacing between digital samples. The method and apparatus of the present invention provides for...
5490183 Digital signal processing apparatus and a communication system using the same  
Base station equipment of a digital mobile communication system includes a digital audio signal processing apparatus provided for each message channel for low bit rate coding and decoding a digital...
5485152 Analog to digital conversion using non-uniform sample rates  
A method and apparatus for analog to digital conversion using sigma-delta modulation of the temporal spacing between digital samples. The method and apparatus of the present invention provides for...
5481267 Sampling rate converter  
A sampling rate converter for converting a first signal having a first sampling rate to a second signal having a second sampling rate, includes a circuit for generating first data corresponding to...
5461380 Phase detector for elastic store  
A bit resolution phase detector can be realized for a parallel elastic store by comparing a write bit clock and a read bit clock to determine when stuff bits are required; upon detection of phase...
5457456 Data converter with programmable decimation or interpolation factor  
In accordance with an embodiment of the invention, a data converter is disclosed that provides a sampling rate conversion. The converter receives a clock signal, a divided-down clock signal, and...
5451944 Sampling frequency converter by linear interpolation  
A data conversion apparatus for a facsimile system converts a first digital data composed of a sequence of primary values sampled at a first frequency, into a second digital data composed of a...
5451942 Method and apparatus for multiplexed encoding of digital audio information onto a digital audio storage medium  
Extra high quality or ultralong digital audio channels with an aggregate data bit rate that exceeds the maximum data bit rate for a digital storage medium, such as a CD, laser disk or digital audio...
5432511 Sampling frequency conversion using interrupt control  
A sampling frequency converter having an oversampler for operating on input data supplied to the converter, a signal processor for controlling operation of the sampling frequency converter and for...
5400024 Digital signal processing apparatus for converting a digital signal from one transmission rate to another transmission rate  
Base station equipment of a digital mobile communication system includes a digital audio signal processing apparatus provided for each message channel for low bit rate coding and decoding a digital...
5398029 Sampling rate converter  
A sampling rate converter includes an arithmetic circuit for performing digital filtering processing for sampling rate conversion, and a circuit for calculating a sampling rate ratio. A memory...
5389923 Sampling rate converter  
In a sampling rate converter for converting a sampling frequency L of a digital signal to a sampling frequency M (L:M conversion) or for converting a sampling frequency M of a digital signal to a...
5387910 Signal processor  
A signal processor is described for sampling rate conversion of a digitally sampled analog signal, the signal processor including an apparatus for generating an output sampled value for each output...
Matches 301 - 350 out of 437 < 1 2 3 4 5 6 7 8 9 >