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...Daniel Webster invented a "bull plow" to pull out tree stumps. It didn't catch on because it was huge and required four oxen to pull it!
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| Number | Title | Issue Date |
| 7847715 | Segmented optics circuit drive for closed loop fiber optic sensors Systems and methods for improving output resolution of an optical drive circuit in an optical sensor. The optical sensor circuit includes an optics circuit that generates analog measurement data, a detector circuit that detects the analog measurement data and conver... | 12/07/2010 |
| 7688241 | Method and apparatus for detecting an analogue signal using a selection circuit A selection circuit is used for detecting analogue signals from different inputs. For the detection of a signal switched through by means of the selection circuit, a delay time during the detection of the switched-through signal is set depending on the occurrence of... | 03/30/2010 |
| 7605730 | Analog-digital converting apparatus and radio communication terminal An analog-digital converting apparatus includes: an analog-digital converting unit that performs a conversion from an analog input signal into a digital output signal; a buffer unit that temporary stores the digital output signal for a plurality of samples and outpu... | 10/20/2009 |
| 7589651 | Flexible signal detect for programmable logic device serial interface A serial interface for a programmable logic device (PLD) uses an analog-to-digital converter (ADC) in place of conventional signal detect and receiver detect circuitry. A separate ADC can be used in each receiver and each transmitter in each serial interface on the ... | 09/15/2009 |
| 7541955 | A/D conversion circuit and optical disk drive An A/D conversion circuit converts an asymmetric analogue signal into a digital signal. In an A/D conversion circuit of a parallel type, a central value of a reference voltage is adjusted by means of an average of an input analogue signal, such as a reproduced RF si... | 06/02/2009 |
| 7498964 | Analog interface for digital instrumentation Nuclear spectroscopy systems have improved over the course of time especially with the advent of digital pulse processing. One disadvantage of digital processing, however, is that it has eliminated the older, universally compatible interface standard of analog signa... | 03/03/2009 |
| 7369342 | Peak detection for magnetic tape timing based servo Selection of servo signals for peak detection of timing based servo tracks of magnetic tape for lateral positioning of heads relative to the magnetic tape. Servo signals from magneto-resistive servo read head(s) reading a magnetic tape are digitized by analog to dig... | 05/06/2008 |
| 7356186 | Digital representation of audio waveforms using peak shifting to provide increased dynamic range A system allows greater dynamic range in fixed-width sample representations of waveforms. Known properties of the waveform are used to determine an unlikely, or impossible, data condition to be used as an exception condition. Samples following the exception conditio... | 04/08/2008 |
| 7323672 | Light sensor structure with dark current compensation The ambient light sensor structure includes a power supply, a converter, and a pulse processing unit. The power supply provides a reference voltage interface, a high voltage interface and a low voltage interface. The converter includes a first current-to-pulse conve... | 01/29/2008 |
| 7252085 | Device for inhalation therapy The invention relates to a device for inhalation therapy. Said device comprises an aerosol-producing device for spraying a liquid (3), preferably comprising a membrane (1), a support unit (6), an electromechanical transducer unit (7), and... | 08/07/2007 |
| 7244919 | Semiconductor integrated circuit device having photo detector circuits, processing elements, and comparing circuits which compare the output of a photo detector element with a reference voltage A semiconductor integrated circuit device is provided which has a plurality of photo detector circuits and a plurality of processing elements. Each of the photo detector circuits includes a comparing circuit, which compares an output of a photo detector element with... | 07/17/2007 |
| 7230782 | Correlation receiver for demodulating servo track information A correlation receiver, among other functions, detects peaks of a correlation signal. The correlation receiver includes a master peak detector for determining whether an amplitude of a pulse of the correlation signal exceeds by at least a first delta an amplitude of... | 06/12/2007 |
| 7203361 | Adaptive digitizer for optical reader An optical reader is provided that can include an image sensor. The optical reader can generate an array of miltibit pixel values. The array of multibit pixel values can be processed. In one embodiment, the image sensor can be provided by a 1D image sensor. In one e... | 04/10/2007 |
| 7203022 | Disk device, and positioning control method and signal-processing circuit for head Embodiments of the invention eliminate noise from burst signals by use of a reliable and simple method. In one embodiment, the read processor of the HDD has a noise elimination circuit. The noise elimination circuit retains multiple integral values of the waveform a... | 04/10/2007 |
| 7190192 | High speed source synchronous signaling for interfacing VLSI CMOS circuits to transmission lines A system of the present invention uses small swing differential source synchronous voltage and timing reference (SSVTR and /SSVTR) signals to compare single-ended signals of the same slew rate generated at the same time from the same integrated circuit for high freq... | 03/13/2007 |
| 7181297 | System and method for delivering customized audio data A method for providing customized audio data products that includes the steps of (1) storing a machine readable hearing profile for a customer, (2) accepting via a data input device or data network for example, machine readable orders from the customer for a particu... | 02/20/2007 |
| 7133233 | Disk drive with read while write capability A disk drive includes recording media having one or more recording surfaces, one or more transducer heads positionable relative to the recording surfaces by an actuator operating within a head position servo loop, and a data transfer driver. A preamplifier in the da... | 11/07/2006 |
| 7126521 | Two-dimension digital ratiometric decoder A two-dimensional all-digital ratiometric decoder to analyze signals representative of state changes in a closed loop control system. In one embodiment, the two-dimensional digital ratiometric decoder comprises at least one selector circuit, a summation circuit, a d... | 10/24/2006 |
| 7123176 | Digital peak detector with noise threshold and method A circuit and method for processing digitized analog signals (“input signals”) containing noise as well as maxima and minima of input signal, whereby local peaks and valleys of the input signal are detected and captured in the presence of the noise, and whereby ... | 10/17/2006 |
| 7120563 | Wire fault detection Described are techniques used in a wire diagnostics system to detect events, such as defects, that may occur within a wire or cable under test. An incident voltage signal is sent out on the wire and a measured voltage signal is obtained which includes the incident v... | 10/10/2006 |
| 7116253 | Radio frequency digital-to-analog converter A radio frequency digital-to-analog converter with a programmable current output. In exemplary aspects of the invention, improved apparatus and methods for providing (i) current mirror matching, (ii) enhanced current pulse rising edge performance, (ii) reduced base ... | 10/03/2006 |
| 7102329 | Method of measuring the battery level in a mobile telephone Measuring the voltage level of a mobile telephone battery during a charging operation involves disabling the charge temporarily so that the battery rapidly enters discharge mode. The discharge mode voltage is more representative of the true battery charge level, so ... | 09/05/2006 |
| 7049875 | One-pin automatic tuning of MOSFET resistors Methods and apparatus for automatic tuning of MOSFET resistors providing accuracy and linearity throughout process and temperature variations. In accordance with the methods, the source and drain of a MOSFET device are biased in a balanced manner around a common mod... | 05/23/2006 |
| 7039436 | Mobile communication terminal A mobile communication terminal includes a receiver (2) receiving a radio waves from a base station, a sampling unit (3) sampling a signal received by the receiver (2), a demodulator (5) demodulating the signal sampled by the sampling uni... | 05/02/2006 |
| 7030795 | Digital automatic gain control method and device An automatic gain control device (110) includes a peak detector (202) configured to receive a current output of an ADC (108) and to compare it to a previous output to produce a peak value. The automatic gain control device (110) also incl... | 04/18/2006 |
| 6999735 | Digital high frequency power detection circuit A digital high frequency power detection circuit includes a peak detecting circuit and a peak computing circuit. The peak detecting circuit is operably coupled to detect a peak value of a high frequency signal and includes an amplifier, transistor, and capacitor. Th... | 02/14/2006 |
| 6992954 | Method for determining DC level of AC signal and DC offset of the same A method for determining a direct current (DC) level involved in an alternating current signal is provided. The alternating current signal is transmitted from an amplifier to an A/D (analog-to-digital) converter. When any of the extreme values of the alternating cur... | 01/31/2006 |
| 6972620 | Post amplifier array integrated circuit An optical communication system that includes a multi-channel post amplifier assembly with flexible output configurations for amplifying optical-to-electrical converted signals on selectable groups of amplifier channels is provided. The post amplifier assembly, when... | 12/06/2005 |
| 6947077 | Fast and accurate adjustment of gain and exposure time for image sensors A proportional counting circuit generates count values for use in variably adjusting gain and exposure time of an image sensor array. The count values are adjusted in proportion to the current count value. This technique allows for fast and accurate adjustment of ga... | 09/20/2005 |
| 6943721 | Charge-coupled amplifier and converter with matched offsets An linear optical sensor charged-coupled topology using single-stage inverting charge-coupled amplifier driving an analog-to-digital converter which uses the converter full-scale reference as a precharge level. Since an offset in the range of 100–200 mV is introdu... | 09/13/2005 |
| 6930629 | Analog/digital converting apparatus Upon detection of any abnormality in digital data of one of the input channels, it is possible to read, with reliability, digital data of all the remaining channels whose conversion is performed after conversion of the one channel. The apparatus includes: a comparin... | 08/16/2005 |
| 6914522 | Clamping circuit for an RF receiver system A low power consumption RF receiver system that is adapted for receiving and shaping transmitted digital data signals into a digital data stream for processing by a microprocessor is provided. The receiver system comprises an integrated circuit, which includes a dat... | 07/05/2005 |
| 6606047 | Methods and apparatus for estimating clipped samples during analog to digital conversion A circuit, for digitizing an analogue signal includes an analogue to digital converter, a clip processor adapted to estimate a value for clipped digital signal samples, and a buffer adapted to dynamically store a plurality of digitized samples produced by... | 08/12/2003 |
| 6476743 | Magnetic stripe reader A method for decoding information contained in a waveform having a series of peaks is disclosed which is particularly directed to a method for reading a magnetic stripe for example on a card that allows the information on the stripe to be read without the... | 11/05/2002 |
| 6417794 | System and apparatus for digitally calibrating capacitors in an analog-to-digital converter using successive approximation A digital calibration system for an analog-to-digital converter system includes a computational system receiving digital bits from an analog-to-digital converter representing selection of elements of the digital-to-analog converter in response to an analo... | 07/09/2002 |
| 6407689 | Method and apparatus for controlling stages of a multi-stage circuit A control mechanism that can be used to control a ΣƊ ADC to provide the required level of performance while reducing power consumption. The ΣƊ ADC is designed with multiple stages (i.e., loops or sections), and provides improved performance (e.g., hig... | 06/18/2002 |
| 6388596 | Digital signal demodulation using weighted peak sample averaging A circuit (50) and method are presented for demodulating servo bursts (40-45) detected from a data medium (12). The circuit (50) includes an A/D converter to receive the detected servo bursts to convert the servo bursts (40-45) into digital data words at ... | 05/14/2002 |
| 6359578 | System for externally referenced ratiometric signal processing A device for externally referenced ratiometric signal processing includes an external signal source and a control module. The external signal source has an external voltage reference supply for generating an external reference voltage and a gain & offset ... | 03/19/2002 |
| 6342849 | Method and apparatus for peak detection of an analog signal A peak detecting device which can efficiently detect a peak of an analog signal in a smaller error for a short time without making a sampling frequency higher. The analog signal processing apparatus (1) as the peak detecting device comprises: the frequenc... | 01/29/2002 |
| 6246353 | Integrated-circuit structures and methods for correction of temperature and process-induced parameter errors Integrated-circuit structures and methods are provided for generating an error signal that represents temperature and process-induced signal changes in transistor parameters. In particular, a reference transistor and a sense transistor are biased to each ... | 06/12/2001 |
