Matches 251 - 300 out of 437 < 1 2 3 4 5 6 7 8 9 >
Match Document Document Title
6169747 Variable code frame length for multistream applications  
The invention dynamically compensates for differences in data rates for multistreamed systems. Any or all of the streams in a multistreamed system may be individually compensated at one time. In...
6160502 Interpolation digital filter for audio CODEC  
An interpolation digital filter for an audio CODEC uses a bit serial method for an audio CODEC system with a clock signal of 256 FS. The interpolation digital filter converts a 32-bits data signal...
6154154 Digital signal processor and control method for changeover of sampling frequency  
A frequency counter detects a sampling frequency of an input digital signal. If a control circuit is notified that the sampling frequency of the input digital signal changes according to a signal...
6137349 Filter combination for sampling rate conversion  
A filter combination for sampling rate conversion is disclosed comprising a series combination of: an input low-pass filter (1) whose attenuation characteristic (tp1) has at least one first...
6134268 Apparatus for performing a non-integer sampling rate change in a multichannel polyphase filter  
A multichannel polyphase filter (304, 602) includes a processing system (204, 506) for accepting and processing M input channels of data, each sampled at an input sampling rate, wherein M is a...
6118393 EFM signal frame period detecting circuit, and system for controlling the frequency of the bit synchronizing clock signal used for reproducing the EFM signal  
A system for controlling the frequency of a bit synchronizing clock signal used for reproducing an EFM signal, comprises an EFM signal frame period detecting circuit for frequency-dividing an EFM...
6094627 High-performance digital signal averager  
A digital signal averager for averaging data collected by an analog detector is provided. The digital signal averager includes an analog-to-digital converter for converting the analog detector...
6084916 Receiver sample rate frequency adjustment for sample rate conversion between asynchronous digital systems  
The present invention comprises a sample rate conversion system for eliminating sample rate slippage. The system of the present invention includes a first sample rate conversion circuit and a...
6081216 Low-power decimator for an oversampled analog-to-digital converter and method therefor  
An oversampled analog-to-digital converter (ADC) (20) includes a sigma-delta modulator (21) with two decimation filters to provide minimum power consumption. The first decimation filter (30)...
6061006 Apparatus for sensing RF current delivered to a plasma with two inductive loops  
An apparatus for sensing RF current delivered to a plasma includes an RF conductor along which the current is delivered to the plasma and which is divided into two parts along part of its length so...
6061410 Frequency ratio estimation arrangement and method thereof  
A communication system includes a data sampling rate converter that uses a closed-loop control arrangement to convert an input signal at a first sampling rate to a second, asynchronous, sampling...
6061704 Method and apparatus for rate conversion  
A method and apparatus in a radio telecommunications system for converting data from a first sample rate to a second sample rate such that the first and second sample rates are preferably within...
6058141 Varied frame rate video  
A method and apparatus wherein raw video and audio are captured and digitized and stored at a frame rate different from the playback stand frame rate. The audio and the video are separated, the...
6055284 Symbol timing recovery circuit in digital demodulator  
A symbol timing recovery circuit in a digital demodulator is disclosed. The symbol timing recovery circuit comprises means for generating a clock signal in a predetermined period, means for...
6005901 Arrangement for asynchronous decimation using a frequency ratio estimator and method thereof  
A communication system includes a data sampling rate converter that uses a closed-loop control arrangement to convert an input signal at a first sampling rate to a second, asynchronous, sampling...
5996044 Sampling frequency converting device and memory address control device  
A sampling frequency converting device. A memory unit stores an input signal D si having an input sampling frequency Fsi. An interpolation unit interpolates the readout signal from the storage...
5990811 Transfer clock converter for digital data  
A transfer clock converter for digital data of the present invention is a circuit for converting digital data synchronized with a first transfer clock into digital data synchronized with a second...
5986589 Multi-stream audio sampling rate conversion circuit and method  
A sample rate conversion system and method uses a digital signal processor (DSP) and a separate sample rate conversion circuit (SRC) to perform multiple stream conversion and mixing of different...
5987067 Variable encoding rate puncturer  
A variable encoding puncturer, for encoding data in response to a variable encoding rate, in a digital broadcasting communication encoder, including a control unit for controlling an alignment of...
5982305 Sample rate converter  
A sample rate converter for converting a digital signal having a particular sample rate frequency into a signal having a different, specified sample rate frequency. The converter includes an...
5974106 Method and apparatus for multirate data communications  
In one embodiment a system is provided for multirate communications allowing for different data rates for each data unit on a channel, including both data units from different mobile units and from...
5963160 Analog to digital conversion using nonuniform 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...
5917438 Data storing and outputting apparatus  
A first data storing and outputting apparatus includes a coding unit for coding data of a program through N coding processes and generating N sets of coded data of the program, N being a natural...
5907295 Audio sample-rate conversion using a linear-interpolation stage with a multi-tap low-pass filter requiring reduced coefficient storage  
Audio sample rates are converted by an arbitrary ratio of Q/P using a two-stage sample-rate converter. One stage is an L-tap low-pass finite-impulse-response (FIR) filter, while the other stage is...
5903232 Apparatus and method for sampling rate conversion with rational factors  
A rational decimation circuit (200) has an integration filter (210) and an FIR-filter (220). The integration filter (210) has N serially arranged integrator blocks (230-n) and an interpolator block...
5903482 Sampling frequency converting system and a method thereof  
An over-sampling device is provided for double over-sampling the input signal and for outputting as a sampling signal. The sampling signal is filtered at one of conversion rates of 147/160,...
5901149 Decode and encode system  
According to decode system and method of the present invention in which a system clock is generated on the basis of a time stamp contained in transmission data to be transmitted every packet, and...
5901177 High speed variable length code decoding apparatus and method  
A variable-length code decoding apparatus for decoding sequential variable-length codewords includes a first barrel shifter for producing a first window output sequence in response to a window...
5892468 Digital-to-digital conversion using nonuniform 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...
5880687 Cascaded integrator-comb interpolation filter  
A cascaded integrator-comb (CIC) interpolation filter is included within a digital-to-analog converter (138) and includes two up-samplers (150, 164). The two up-samplers (150, 164) also include a...
5872726 Memory control apparatus for compression and expansion of data  
A memory control apparatus for compression or expansion of data includes an input end for receiving a signal indicating the data rate of the original data and a second signal indicating the data...
5872480 Programmable down-sampler having plural decimators and modulator using same  
A digital QPSK demodulator includes a plurality of two-input-two-output (TITO) two-fold decimators where each TITO two-fold decimator operates at a rate equal to its input data rate. The in-phase I...
5870038 Circuit for converting sampling phase of digital data  
A sampling phase of digital data is converted with having a phase stabilization and a phase alignment. In a converting circuit for converting first digital data synchronized with a fist clock into...
5864309 Serial data timing base modulator  
A serial data timing base modulator includes a bidirectional data format converter, a data buffer, and a timing base generator. The bidirectional data format converter converts inputted serial data...
5859787 Arbitrary-ratio sampling rate converter using approximation by segmented polynomial functions  
A method for resampling includes convolving a given set of samples with the impulse response function of a low-pass filter. In this method, values of the impulse response required for the...
5859603 Signal processing apparatus and method for sound field processing of ΣΔ modulated digital signal  
A signal processing method and apparatus for performing special-effects processing on a 1 bit ΣΔ modulated signal in which, for amplitutde limiting a ΣΔ modulated 1-bit digital signal, the...
5856796 Sampling rate converting method and apparatus  
A sampling rate converting method and apparatus for converting the sampling frequency of a 1-bit digital data obtained a ΣΔ modulator to 32 kHz, 48 kHz, 96 kHz or 192 kHz without producing...
5841378 System and apparatus for, and method of, interfacing a demodulator and a forward error correction decoder  
A system (400) and apparatus (200, 300) for, and method (100) of, interfacing a demodulator and a forward error correction decoder enables a forward error correction decoder to be used in...
5835031 Facility and method for transmitting digitized signals  
When digitized signals are transmitted from a digital transmission system (NET1), e.g. a PDH system, to another digital transmission system (NET2), e.g. a SDH system, which operate at different...
5828698 Data flow management method for CDPD demodulator operating without CDPD clock  
An efficient and power-saving method of converting serial in-phase (I) and quadrature-phase (Q) symbols at the IS-54 standard symbol rate, to time-aligned IQ pairs at the CDPD standard symbol rate....
5821884 Sampling rate conversion method and apparatus utilizing an area effect correlation method  
A sampling rate conversion apparatus in which according to an area effect correlation method, an input signal having a first sampling rate K is converted into an output signal having a second...
5821882 Data conversion method and apparatus  
According to a data conversion method and apparatus, an original signal is wavelet-transformed with a desired expansion count to generate transformed data. The transformed data is corrected such...
5818834 Serial bit rate converter embedded in a switching matrix  
A time division switching matrix capable of effecting rate conversion comprises a plurality of serial inputs for connection to respective serial input links, each capable of carrying time division...
5818888 Sample rate converter  
A sample rate converter is described for converting an input data stream including a plurality of input samples at one sample rate to an output data stream including a plurality of output samples...
5812073 Method and apparatus for generating run-length limited code  
A method and an apparatus are provided for generating an (4,20) RLL modulation code having a decreased detectible window width and an increased recording density ratio. The code's spectrum is...
5812074 High speed data syntax parsing apparatus  
A syntax parsing apparatus produces an effective bit length used in a video decoder which decodes encoded bitstream data. The syntax parsing apparatus includes an input port for receiving encoded...
5786778 Variable sample-rate DAC/ADC/converter system  
A digital oversampling noise-shaping system includes a digital noise-shaped clock signal generating circuit, including a DCO operating at a fixed master clock rate, that receives a digital input...
5786779 Digital-to-analog converter which uses a sigma-delta modulation  
A digital-to-analog (D/A) converting apparatus for converting digital data to an analog signal is provided. Specifically, the apparatus contains a sampling rate converting circuit, an interpolator,...
5784010 Method and apparatus for implementing a set rate code for data channels with alternate 9-bit code words and 8-bit code words  
A data encoding method and apparatus are provided for implementing a predefined rate code, such as a 16/17 rate code for a data detection channel in a direct access storage device. A binary data...
5764113 Re-sampling circuit and modulator using same  
A re-sampling circuit includes a poly-phase finite impulse response (FIR) interpolator; a polynomial interpolator having a sample input connected to a sample output of the poly-phase FIR...
Matches 251 - 300 out of 437 < 1 2 3 4 5 6 7 8 9 >