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| Number | Title | Issue Date |
| 8059020 | Adjustable analogue-digital converter arrangement and method for analogue-to-digital conversion An adjustable analog-digital converter arrangement comprising: an input adapted for receiving an input signal; an analog-digital converter operating by successive approximation, having a signal input coupled with the input, wherein said converter is adapted for conv... | 11/15/2011 |
| 8009071 | Gain circuit A gain circuit comprises a main amplification unit and a first refresh unit. The main amplification unit comprises an amplifier, a first capacitor connected between a first input terminal of the gain circuit and a first input terminal of the amplifier, and a second ... | 08/30/2011 |
| 7961127 | Variable gain stage having same input capacitance regardless of the stage gain A programmable gain amplifier (PGA) includes a sample-and-hold (S&H) stage which provides an input capacitance value for storing a charge. The PGA also includes an amplifying stage, which has a gain dependent on the input capacitance value. The amplifying stage is c... | 06/14/2011 |
| 7956779 | Non-linear interpolation circuit, interpolation current generating circuit thereof and method for converting digital data into analog data A non-linear interpolation circuit includes current interpolation units and an I-V converter. The current interpolation units receive an operating voltage corresponding to digital image data and corresponding reference voltages to generate corresponding operating cu... | 06/07/2011 |
| 7936292 | Diode smart track Systems and methods to achieve a logarithmic digital-to-analog converter (DAC), which is easy to be implemented, and requiring reduced chip space have been disclosed. The logarithmic DAC is created by a simple and easy to scale linear DAC, which is linearly scaling ... | 05/03/2011 |
| 7859441 | Data readout system having non-uniform ADC resolution and method thereof A data readout system with non-uniform resolution has a pick up head for reading data stored in an optical disc and generating an analog signal, a reference voltage unit for producing a plurality of reference voltage levels, wherein voltage differences between two a... | 12/28/2010 |
| 7808411 | Method and circuit for digitizing with improved resolution Embodiments of the invention relate to a method and a corresponding circuit for digitizing an analog signal. Applying a nonlinear function to the signal, digitizing the signal and applying the inverse of the nonlinear function to the digital samples improve the digi... | 10/05/2010 |
| 7733255 | Digital-to-analog converter with logarithmic selectable response and methods Embodiments of a digital-to-analog converter (DAC) with a logarithmic response and methods for converting digital signals to analog are generally described herein. Other embodiments may be described and claimed. In some embodiments, the DAC includes a wedge-shaped r... | 06/08/2010 |
| 7724168 | Pulse domain linear programming circuit A system for making a pulse domain linear programming circuit. The inputs and the outputs to the pulse domain linear programming circuit are time encoded pulse signals. The circuit includes arrays of two types of cross-coupled time encoding elements. The first type ... | 05/25/2010 |
| 7724167 | Integrated circuit arrangement, and method for programming an integrated circuit arrangement An integrated circuit includes a comparator having a first input, a second input, and an output for providing a comparison result. The first input is connected to a readable component having a predefined value, and the second input is connected to a reference compon... | 05/25/2010 |
| 7642941 | Gamma reference voltages generating circuit A gamma reference voltages generating circuit is disclosed in the present invention. The gamma reference voltages generating circuit comprises a voltage provider, a plurality of first digital-to-analog converters and a plurality of second digital-to-analog converter... | 01/05/2010 |
| 7586428 | Non-linear processing of signals In a non-linear processing system, the main non-linear processing and filtering is performed with low precision in a separate branch. A low-precision version (22) of the input signal (14) is created in an extractor (20), which is processed non-l... | 09/08/2009 |
| 7576669 | Method and apparatus for calibrating analog-to-digital converters within an imaging device A method of operating an imaging device, an imaging device, a camera system including an imaging device, and a processing system including an imaging device for calibrating an analog-to-digital converter of the imaging device to generate a look-up table of correctio... | 08/18/2009 |
| 7570185 | Data acquisition system for medical imaging A system and a method for converting an analog signal to a digital signal are provided. The technique involves receiving a sampled analog signal, and selecting one of a plurality of segments of a segmented relation between DAC output values and desired ADC input val... | 08/04/2009 |
| 7432839 | ADC with logarithmic response and methods for controlling RF power levels Embodiments of an analog-to-digital converter (ADC) and methods for controlling RF power levels are generally described herein. Other embodiments may be described and claimed. In some embodiments, the ADC includes an internal-reference digital-to-analog converter (D... | 10/07/2008 |
| 7432838 | Method and apparatus for reduced power consumption ADC conversion A method for conversion of signals between analog and digital characterised by; applying a non-linear transfer function to an input signal, such that the relation between the quantisation levels of the converter and the input signal vary as a non-linear function of ... | 10/07/2008 |
| 7408492 | A/D converter for wideband digital communication Circuitry for providing non-uniform analog-to-digital (“A/D”) signal conversion for wideband signals is provided. The circuitry of the invention is optimized for wideband signals because it does not sacrifice the small-scale resolution of high-probability signal... | 08/05/2008 |
| 7397403 | Range compression in oversampling analog-to-digital converters using differential input signals An analog-to-digital converter according to the invention is provided. The analog-to-digital converter preferably includes an analog input signal, a first reference signal, a second reference signal, and a range compression signal. The range compression signal is pr... | 07/08/2008 |
| 7397404 | Digital linearizing system A signal processing system includes a receiving terminal configured to receive a digital signal comprising a plurality of samples associated with a plurality of original sampling times, wherein the original sampling times have a period of T, and a compensation modul... | 07/08/2008 |
| 7382306 | AD converter and display unit An AD converter includes: a reference voltage generator circuit having a plurality of resistors connected in series with predetermined reference voltage applied to both ends thereof, the reference voltage being divided at connecting points between the individual res... | 06/03/2008 |
| 7372382 | Voltage regulation using digital voltage control For one disclosed embodiment, error is sensed in a voltage at an output node. One or more analog signals are generated based on the sensed error. One or more generated analog signals are converted into one or more digital signals. The voltage at the output node is c... | 05/13/2008 |
| 7369074 | D/A converter for a digital signal after non-linear A/D conversion, audio signal processing circuit and liquid crystal display device including the same A D/A converter inputted with non-linear conversion digital data such as a digital signal encoded according to a μ-Law system or the like as it is to convert into an analog signal. A D/A converter is of resistor string type, in which a resistance value of each of r... | 05/06/2008 |
| 7362697 | Self-healing chip-to-chip interface A method, apparatus, and computer instructions for managing a set of signal paths for a chip. A defective signal path within the set of signal paths for the chip is detected. Signals are re-routed through the set of signal paths such that the defective signal path i... | 04/22/2008 |
| 7362246 | High speed comparator offset correction An offset canceling buffer receives a reference voltage, and provides a modified reference voltage to a comparator. The modified reference voltage operates to cancel any comparator offset. The offset canceling buffer includes a digitally controllable current source ... | 04/22/2008 |
| 7352226 | Versatile attenuator A versatile attenuator. The versatile attenuator includes a first mechanism for receiving an input signal. A second mechanism measures the input signal and provides a signal-level indication in response thereto. A third mechanism selectively attenuates the input sig... | 04/01/2008 |
| 7348912 | High resolution and low consumption digital-to-analog converter A digital-to-analog converter includes a first section (MSB) that converts the more significant bits of a digital code into a first voltage (Vin) of a multiplicity of discrete voltages that are integral multiples of a predetermined first voltage step (ΔV1). ... | 03/25/2008 |
| 7333040 | Flash ADC with sparse codes matched to input noise An analog-to-digital converter (ADC) architecture to implement a non-linear flash ADC. The apparatus includes a non-linear resistor, a non-linear comparator, and an inverse non-linear encoder. The non-linear resistor has an input and a plurality of non-linear voltag... | 02/19/2008 |
| 7333564 | High frequency power amplifier circuit The present invention provides a high frequency power amplifier circuit capable of obtaining sufficient detection output even in a range where a request output power level is low and performing a desired output power control by a control loop with the detection outp... | 02/19/2008 |
| 7330066 | Reference voltage generation circuit that generates gamma voltages for liquid crystal displays A gamma voltage generation circuit coupled to a digital-to-analog converter and provides the digital-to-analog converter with reference voltages by voltage division through resistor circuits. A variable voltage source can be modulated and charge-sharing switches can... | 02/12/2008 |
| 7272174 | Upstream data transmission A process transmits digital data to an A/D converter via an analog channel. The process includes generating a sequence of output signals by precoding a sequence of input signal points to precompensate for ISI in the analog channel. In the precoding is matched to the... | 09/18/2007 |
| 7271756 | Non-linear distribution of voltage steps in flash-type A/D converters A method, apparatus, and system for converting an input voltage VIN to a digital output. A comparison of VIN with reference voltages in one or more flash-type analog-to-digital (A/D) converters generates the digital output representing VIN. If one A/D converter is u... | 09/18/2007 |
| 7262727 | Digital-to-analog data converter and method for conversion thereof A digital-to-analog data converter for converting a digital input signal to an analog output signal is provided. The digital-to-analog data converter includes a register, a decoder, a converting unit and an output unit. During a first period, the decoder decodes lea... | 08/28/2007 |
| 7250894 | Matching circuit for two-channel analog to digital converters A matching circuit for two-channel Analog to Digital Converters (ADCs) is disclosed in which two ADCs convert analog signals of two channels to digital signals with the same operational characteristics. A bias voltage supplier operates in such a way that analog sign... | 07/31/2007 |
| 7250884 | Analog-to-digital converters for control loop applications An analog-to-digital converter error detector suitable for single-chip control loop applications employs a single comparator determining the difference between an initial input voltage and a reference voltage in one or more conversion iterations, with the difference... | 07/31/2007 |
| 7248690 | Voice signal clipping circuit and telephone set therewith A voice signal clipping circuit comprising, an amplifier which amplifies an input voice signal to a permissible level and a clipper which clips an amplitude component in excess of the permissible level from an output signal from the amplifier. ... | 07/24/2007 |
| 7245675 | Upstream data transmission A process transmits digital data to an A/D converter via an analog channel. The process includes generating a sequence of output signals by preceding a sequence of input signal points to precompensate for ISI in the analog channel. In the preceding is matched to the... | 07/17/2007 |
| 7242338 | Differential digital-to-analog converter Briefly, in accordance with one embodiment of the invention, a differential digital-to-analog converter utilized in a transmitter path of a transceiver utilizes a differential R2R architecture. Such a differential digital-to-analog converter may be utilized in highe... | 07/10/2007 |
| 7239257 | Hardware efficient digital control loop architecture for a power converter A power converter including a hardware efficient control loop architecture. Error detection circuitry may generate an error signal based on the difference between a power converter output voltage and a reference voltage. An oversampling ADC may digitize the error si... | 07/03/2007 |
| 7230559 | Quantizer in a multilevel sigma-delta analogue/digital converter The quantizer (2′) has an input network (5) which generates N different drive signals (Vij) as a function of the quantizer input signal (VI+−VI−). The input network (5) is designed in such a way that a valu... | 06/12/2007 |
| 7227488 | Low-power CMOS image device with analog-to-digital converter circuit Disclosed is a signal processing circuit which outputs a digital word corresponding to a current source controlled by a physical response. The signal processing circuit includes an analog integrated circuit for generating an analog signal in response to a time varyi... | 06/05/2007 |
