Bizarre Patents
Ballistic resistant body covering
A ballistic resistant body covering for protecting the torso, groin and neck area from ballistic missiles.
PatentStorm News
Make the Most of Our Site
See this month's Top Inventors and Most Cited Patents.
Stay on top of the latest innovations by subscribing to an RSS feed.
Registered users: Manage your profile.
| Number | Title | Issue Date |
| 8031783 | Phase noise shaping using sigma delta modulation in a timing recovery unit A method and apparatus for converting a high precision digital word into a high precision analog value is disclosed. A sigma delta modulator applies a digital input signal to a dither signal to generate a combined signal for sampling. A digital-to-analog converter q... | 10/04/2011 |
| 7720160 | Phase noise shaping using sigma delta modulation in a timing recovery unit A method and apparatus for converting a high precision digital word into a high precision analog signal is disclosed. A sigma delta modulator applies a digital input signal to a dither signal to generate a combined signal for sampling. A digital-to-analog converter ... | 05/18/2010 |
| 7630445 | Establishing slot boundaries of slots of a diversity control feedback signal Establishing slot boundaries includes receiving a feedback signal reflecting feedback information describing a signal modified according to a diversity parameter adjustment. The feedback signal includes slots and bits. A slot boundary is established for each of the ... | 12/08/2009 |
| 7450648 | Digital signal processing device, a method and a delta-sigma modulator using the same method A signal processing device uses a ΔΣ modulator having varying effective orders to ensure an S/N ratio by selecting a high order when a 1-bit music signal is output via the ΔΣ modulator. The signal processing device prevents noise during switchover by shifting to... | 11/11/2008 |
| 7430239 | Bit-detection arrangement and apparatus for reproducing information A preprocessing unit converts an analog signal to a processed signal at a sample rate controlled by a first clock signal. A digital phase locked loop locks on the processed signal and outputs a phase signal using the first clock signal. A bit decision unit outputs a... | 09/30/2008 |
| 7385538 | Delta sigma modulator with multiple filters Methods and devices for an improved delta sigma modulator. The delta sigma modulator has multiple filters with at least one high order filter processing the MSBs of the quantizer fractional output and at least one lower order filter processing the LSBs of the quanti... | 06/10/2008 |
| 7372384 | High-speed, high-resolution, low-power analog-to-digital converter An ADC and method comprises a hybrid-type sigma-delta modulator comprising a digital delta-stage and an analog sigma-stage, wherein the analog sigma-stage comprises an analog low-pass filter adapted to only pass a low frequency audio band between 0-20 khz of a PWM w... | 05/13/2008 |
| 7369575 | Bandwidth matching device and method for operating the same Broadly speaking, a bandwidth matching device is provided for transforming a number of incoming data streams each having a first bandwidth into an outgoing data stream having a second bandwidth. More specifically, the bandwidth matching device provides an assembler ... | 05/06/2008 |
| 7365668 | Continuous-time delta-sigma analog digital converter having operational amplifiers The invention concerns a continuous-time delta-sigma analog-digital converter for the conversion of an analog input signal into a digital output signal, comprising an analog filter which filters the analog input signal and at least one externally circuited operation... | 04/29/2008 |
| 7359443 | Method for compensating for peak values during a data transmission with discrete multitone symbols and a circuit arrangement for carrying out the method The invention provides a method for transmitting an analog data stream (101) from a data stream transmitter (214) to a data stream receiver (215) by means of discrete multitone symbols (208), in which data (123) to be transmitted a... | 04/15/2008 |
| 7358881 | Quantizer overload prevention for feed-back type delta-sigma modulators A digital signal processing system includes a delta sigma modulator that maintains a low pass output during quantizer overload prevention conditions. In at least one embodiment, the delta sigma modulator includes a quantizer overload protected delta sigma modulator ... | 04/15/2008 |
| 7339997 | Line driver and method of operating the same A line driver coupled to a transmission path having line characteristics associated therewith and a method of operating the same. In one embodiment, the line driver includes a driver stage configured to send a signal along the transmission path. The line driver also... | 03/04/2008 |
| 7339510 | Accumulator for adaptive sigma-delta modulation A system and method for adaptive sigma-delta modulation. The system includes a input stage that produces a difference signal representing the difference between an analog input signal x(n) and a analog feedback signal z(n), the amplitude of the analog input signal x... | 03/04/2008 |
| 7330500 | Adjustable electronic duplexer A duplexer for a communication device having a transmission unit, a reception unit and a shared antenna is disclosed. The duplexer comprises a first signal path between the transmission unit and the reception unit, the first signal path comprises a filter unit filte... | 02/12/2008 |
| 7321608 | Process and device for generating pulses for the transmission of a pulsed signal of the ultra wideband type Successive groups of N bits are delivered at a delivery frequency Fe greater than a predetermined frequency PRF. At least one of the successive groups includes at least one subgroup of at least one bit defining at least one digital cue of position and of shape of at... | 01/22/2008 |
| 7310382 | Linearized switch-based power amplifier A power amplifier comprises a level-discretization modulator (210) and a mixing and amplifying stage (225), in combination with a properly designed negative feedback path. The feedback path forms an error compensation loop together with a properly sele... | 12/18/2007 |
| 7308032 | Oversampling D/A converter and method for shaping nonlinear intersymbol interference in an oversampling D/A converter A method and a device for spectrally shaping nonlinear intersymbol interference (NLISI) in an oversampling digital-to-analog converter are disclosed. At least one higher-order shaper circuit is provided, so as to shape NLISI, causing energy associated with NLISI to ... | 12/11/2007 |
| 7295140 | Oversampling analog-to-digital converter and method with reduced chopping residue noise A delta-sigma modulator includes a chopper-stabilized integrator, a quantizer having an input coupled to an output of the integrator, an input signal acquiring circuit controlled by a switched reference feedback circuit and having an output coupled to the input of t... | 11/13/2007 |
| 7295634 | Portable communication device and method therefor Briefly, in accordance with one embodiment of the invention, a portable communication device includes a quantization unit comprising an analog-to-digital converter and a signal generator. The output signal of the analog-to-digital converter may be adjusted to provid... | 11/13/2007 |
| 7295826 | Integrated frequency translation and selectivity with gain control functionality, and applications thereof Methods and apparatuses for frequency selectivity and frequency translation, and applications for such methods and apparatuses, are described herein. The method includes steps of filtering an input signal, and down-converting the filtered input signal. The filtering... | 11/13/2007 |
| 7292171 | Method and device for the version of digital signals with heterogeneous formats and application thereof to the digital amplification of audio signals The invention relates to a method and device for the conversion of digital signals comprising a phase involving modulation with the aid of a vector lattice encoder. The inventive method comprises iterative steps which are performed on N output candidates, consisting... | 11/06/2007 |
| 7289565 | Multiple description coding communication system A method and apparatus reliably encode and decode information over a communication system. The method includes transforming two coefficients into two pairs of random variables, one random variable in each pair having substantially equal energy as one random variable... | 10/30/2007 |
| 7289050 | Amplification method and apparatus Methods and apparatus for implementing and/or using amplifiers and performing various amplification related operations are described. The methods are well suited for use with, but not limited to, switching type amplifiers. The methods and apparatus described herein ... | 10/30/2007 |
| 7280066 | Single-loop switched-capacitor analog-to-digital sigma-delta converter A single-loop differential switched-capacitor sigma-delta converter has a three stage double-sampling architecture with reduced current consumption. The converter is stable for large input dynamics, which makes it suitable for RF applications. The three-stage multi-... | 10/09/2007 |
| 7275198 | Apparatus and method for transmitting/receiving error detection information in a communication system Disclosed is an apparatus for generating an error detection information bit sequence for determining a length of data sequence transmitted in a communication system. The apparatus comprises a plurality of cascaded registers, the number of which is identical to the n... | 09/25/2007 |
| 7266152 | Digital signal processing device and digital signal processing method A device for performing predetermined processing on an input signal that may have a signal amplitude of more than one bit. The input signal is obtained by subjecting one-bit serial signals to predetermined signal processing, wherein the signal amplitude of more than... | 09/04/2007 |
| 7257164 | Class D amplifier The present invention relates to Class-D amplifiers, and in particular to bit-flipping sigma-delta modulator (SDM) implementations of such amplifiers. Such amplifiers are particularly although not exclusively suitable for audio equipment such as hi-fi and personal m... | 08/14/2007 |
| 7248194 | Bit-detection arrangement and apparatus for reproducing information Disclosed is a bit-detection arrangement able to convert an analog signal (AS) having an amplitude into a digital signal (DS) representing a bit sequence from which the analog signal (AS) is derived. The bit-detection arrangement has a phase detector which detect th... | 07/24/2007 |
| 7236112 | Self-tuning output digital filter for direct conversion delta-sigma transmitter A self-tuning filter that is well suited for use as a output digital filter in a direct conversion delta-sigma transmitter is constructed as a high pass finite impulse response filter having a cutoff frequency of twice the desired carrier frequency. The filter is cl... | 06/26/2007 |
| 7227482 | Complex band-pass filter for use in digital radio receiver and complex band-pass Δ-Σ AD modulator using the same In a first-order complex band-pass filter, multiplexers are alternately switched over between time intervals of phases A and B, where the multiplexers includes two multiplexers provided at input and output stages, and a multiplexer provided in a feedback circuit of ... | 06/05/2007 |
| 7224304 | Method and apparatus for an image canceling digital-to-analog converter (DAC) A method and apparatus for an image canceling digital-to-analog converter is disclosed. Up-sampling and noise shaping is used to produce a stream of digital sample values at a relatively higher sampling rate than the sampling rate of the digitized input samples, eac... | 05/29/2007 |
| 7224757 | Method and apparatus for improving the performance of delta-sigma modulators A delta-sigma modulator that provides improved SNR performance in applications such as low-power mobile wireless communications and high frequency radar applications is disclosed. Multiple comparators 10, each comprising a sequence of three latches 20, 22,... | 05/29/2007 |
| 7218253 | Hardware efficient implementation of finite impulse response filters with limited range input signals Disclosed herein is a method and system to reduce the area and power dissipation in digital filters or multipliers. Compared to radix-4 Booth coding the proposed method reduces the number of partial products by one, if the input signal has certain limits on its rang... | 05/15/2007 |
| 7194036 | Digital data processing circuits and systems with delta-sigma modulator filtering A method of processing a digital data stream in a digital processing system includes filtering the digital data stream being processed through a delta-sigma modulator having a selected signal transfer function passing a frequency band of interest. ... | 03/20/2007 |
| 7190295 | Accumulator for adaptive sigma-delta modulation A system and method for adaptive sigma-delta modulation. The system includes a input stage that produces a difference signal representing the difference between an analog input signal x(n) and a analog feedback signal z(n), the amplitude of the analog input signal x... | 03/13/2007 |
| 7190294 | Jointly nonlinear delta sigma modulators A signal processing system includes a jointly non-linear delta sigma modulator. In one embodiment, the jointly non-linear delta sigma modulator includes a non-linear quantization transfer function, and the output of the delta sigma modulator is defined, at least in ... | 03/13/2007 |
| 7184716 | Low cost/low power analog transceiver architecture A time division duplex (TDD) single sideband (SSB) transceiver includes a transmitter adapted to input an analog audio signal, sample the analog audio signal, and to output an SSB frequency shift keyed (FSK) signal corresponding to the analog audio signal, the SSB F... | 02/27/2007 |
| 7184724 | System and method for frequency translation using an image reject mixer Frequency translation, such as frequency up conversion of a video baseband or intermediate frequency to a desired frequency division broadcast channel, is provided utilizing a single sideband or image reject mixer and filtering having relaxed selectivity requirement... | 02/27/2007 |
| 7177605 | Power amplification device, in particular for a cellular mobile telephone A power amplification device includes an input for receiving a signal having a useful or desired frequency band, and power amplification circuitry of the delta-sigma type connected to the input. The power amplification circuitry exhibits an order greater than or equ... | 02/13/2007 |
| 7170434 | Look-ahead delta sigma modulator with quantization using natural and pattern loop filter responses A look-ahead delta sigma modulator reduces and simplifies the computations used to generate quantizer output values. Superposition can be applied to a loop filter response of the look-ahead delta sigma modulator. By superposition, the complete loop filter response f... | 01/30/2007 |
