Did You Know...
...that the Band-Aid Bandage was invented by a Johnson & Johnson employee whose wife had cut herself? Earl Dickson's wife was rather accident prone, so he set out to develop a bandage that she could apply without help. He placed a small piece of gauze in the center of a small piece of surgical tape, and what we know today as the Band Aid bandage was born!
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| Number | Title | Issue Date |
| 7366244 | Method and system for antenna interference cancellation A wireless communication system can comprise two or more antennas that interfere with one another via free space coupling, surface wave crosstalk, dielectric leakage, or other interference effect. The interference effect can produce an interference signal on one of ... | 04/29/2008 |
| 7342983 | Apparatus and method for digitally filtering spurious transitions on a digital signal A digital filtering apparatus and method for digitally filtering out undesirable or invalid data from data signal lines. The digital filtering apparatus includes a digital delay element having one or more outputs, a comparator connected to the outputs of the digital... | 03/11/2008 |
| 7321621 | Differential receiver circuit with electronic dispersion compensation for optical communications systems The invention describes a number of differential, balanced high-speed circuits that permit the design of a receiver with Electronic Dispersion Compensation (EDC) on a single semiconductor substrate, including the functions of an analog Fast Forward Equalizer (FFE), ... | 01/22/2008 |
| 7315876 | System and method for providing delay line and/or finite impulse response filters using a lossless and dispersion-free transmission line A delay line is constructed using a lossless (or low loss) transmission line which, in turn, can be constructed using an auxiliary conductor inductively coupled to the primary conductor. The auxiliary conductor is driven by the primary conductor through an active sh... | 01/01/2008 |
| 7286980 | Speech processing apparatus and method for enhancing speech information and suppressing noise in spectral divisions of a speech signal A speech processing apparatus and method may identify divisions of a signal spectrum as having a speech component or having no speech component. A comb filter is generated, based on a high-accuracy speech pitch obtained in the identified speech component divisions, ... | 10/23/2007 |
| 7283917 | System and method for calibrating an adjustable delay time for a delay module A timing calibration system for an adjustable delay time of a delay module for an electronic circuit is provided. The system includes a control delay module including at least one calibration delay module, the control delay module having a second delay time. The sys... | 10/16/2007 |
| 7274736 | Multiple path equalization for multicarrier systems A dual path equalization structure is used to equalize DMT systems operating over channels in which different impairments dominate the performance of different parts of the channel. Two TEQ/DFT structures are used to process the received signal, each optimized for a... | 09/25/2007 |
| 7256720 | Output filter for delta sigma modulator and digital signal processor provided with the same The invention intends to reduce noises by resistors in an output filter for a delta sigma modulator. The output filter uses an FIR filter with constant current sources as the current source, extracts output data of the delta sigma modulator from each taps of a shift... | 08/14/2007 |
| 7218188 | Microelectromechanical apparatus and methods for surface acoustic wave switching Microelectromechanical system (MEMS) apparatus and methods for surface acoustic wave (SAW) switching are disclosed. The apparatus includes a piezoelectric substrate having spaced apart input and output SAW transducers. A MEMS switch is arranged between the input and... | 05/15/2007 |
| 7200371 | Inter-modulation interference inhibiting line amplifier Systems and methods are provided for using an inter-modulation interference inhibiting line amplifier that reduces signal losses for signals transmitted between a transmitting element and a receiving element. The present invention inhibits inter-modulation interfere... | 04/03/2007 |
| 7174488 | Echo canceler-based mechanism for performing and reporting fault diagnostic testing of repeatered telecommunication line A repeater-installed fault location mechanism conducts parametric measurements on a segment of wireline to which the repeater is connected, and adjusts taps of an echo cancellation operator in the repeater transceiver equipment, in accordance with the response of th... | 02/06/2007 |
| 7132908 | Selectable performance filter RF programmable SAW filters achieve selectable filter performance by providing tunable input and output interdigital (IDTs) with different synchronous frequencies and substantially reduce electromagnetic interference (EMI) associated with RF signals not of interest.... | 11/07/2006 |
| 7123676 | Method and system for antenna interference cancellation A wireless communication system can comprise two or more antennas that interfere with one another via free space coupling, surface wave crosstalk, dielectric leakage, or other interference effect. The interference effect can produce an interference signal on one of ... | 10/17/2006 |
| 7110482 | Method and apparatus for tracking invalid signals through a digital system A tracking apparatus identifies distorted output signals from a digital system caused by at least one distorted signal input to the digital system. A first signal is input to the tracking apparatus when a distorted signal is input to the digital system. A second sig... | 09/19/2006 |
| 7106853 | Method and means for increasing inherent channel capacity for wired network A receive system providing enhanced Signal to Noise performance is applicable to a wide variety of applications including both wireless and wireline systems which further include internet type communications. Received signals are converted to digital values and stor... | 09/12/2006 |
| 7100025 | Apparatus and method for performing single-instruction multiple-data instructions An apparatus and method for performing single-instruction multiple-data instructions using a single multiply-accumulate unit while minimizing operational latency. The multiply-accumulate unit generates a first half and a second half of a data result. A register stor... | 08/29/2006 |
| 7050388 | Method and system for crosstalk cancellation Signals propagating in one communication channel can generate crosstalk interference in another communication channel. A crosstalk cancellation device can process the signals causing the crosstalk interference and generate a crosstalk cancellation signal that can co... | 05/23/2006 |
| 7023963 | DSL line card echo canceler-based mechanism for locating telecommunication line fault A digital subscriber loop line card-installed mechanism conducts parametric measurements on the wireline to which the line card is connected, and adjusts taps of an echo cancellation operator in accordance with the response of the wireline to an electrical stimulus ... | 04/04/2006 |
| 7024447 | Time continuous FIR filter to implement a hilbert transform and corresponding filtering method A finite impulse response (FIR) filter for implementing a Hilbert transform is provided. The FIR filter includes a plurality of programmable delay cells connected in cascade between an input terminal of the FIR filter and an output terminal of the FIR filter. Each p... | 04/04/2006 |
| 7020297 | Subband acoustic feedback cancellation in hearing aids A new subband feedback cancellation scheme is proposed, capable of providing additional stable gain without introducing audible artifacts. The subband feedback cancellation scheme employs a cascade of two narrow-band filters Ai(Z) and Bi(Z) alo... | 03/28/2006 |
| 7003031 | Pulse width modulating device and exposure device A PWM signal is made to rise synchronously with a pixel clock by inputting of a pulse to a set terminal (S terminal) of an R-S flip-flop. One of a reference clock, which is generated by a reference clock generator, and a delay clock, which is obtained by a delay cir... | 02/21/2006 |
| 6999540 | Programmable driver/equalizer with alterable analog finite impulse response (FIR) filter having low intersymbol interference and constant peak amplitude independent of coefficient settings A programmable driver/equalizer with an alterable FIR enables the equalization of serial links or other transmission systems to adapt to a variety of transmission media, specifically, intersymbol interference (ISI). Current mode differential drive circuits are coupl... | 02/14/2006 |
| 6950678 | Control technique for a communication system A control technique for a communication system in which a microcell base station is co-located with a macrocell base station. The microcell base station tracks hot spots as they move within the macrocell. The microcell base station may utilize a two-dimensional (2-D... | 09/27/2005 |
| 6950741 | Plant controller for frequency-shaping response-designating control having a filtering function A plant controller controls a plant modeled in a discrete-time system. The controller uses a frequency-shaping response-designating control algorithm having a filtering function to cause a difference between output of the plant and a target value to converge. Thus, ... | 09/27/2005 |
| 6804828 | Tap device of cable broadcasting system A part of transmission signal is branched by a directional coupler, and split by a splitting circuit, so that the transmission signal can be outputted to the subscribers' terminal devices via branched output terminals. Latching relays disposed in signal paths to the... | 10/12/2004 |
| 6791433 | Signal processing by means of resonators Scheme for processing an input signal A(t) by N resonators (17), each having parameters characterizing it, to generate N individual output signals. Then each of the N individual output signals is weighted using a corresponding weight to generate N individual ... | 09/14/2004 |
| 6563373 | Filter circuit utilizing a plurality of sampling and holding circuits An analog calculation circuit in a filter circuit is corrected in the calculation error by estimating the error from a calculation result of known inputs and known multiplier. A multiplier is changed according to the estimated error. The filter circuit ha... | 05/13/2003 |
| 6545567 | Programmable analog tapped delay line filter having cascaded differential delay cells Method and system for a programmable analog tapped delay line filter are disclosed. One embodiment of the present invention is a programmable analog tapped delay line filter comprising an input line, an output line, and one or more gaincells or taps coupl... | 04/08/2003 |
| 6492884 | Programmable transversal filter The operational flexibility of programmable transversal filters is enhanced by incorporating switch arrays to permit passage for a plurality of tap voltages or signals to particular amplifiers in amplifier arrays. Fixed gain amplifiers may be incorporated... | 12/10/2002 |
| 6459345 | Programmable saw filter including unidirectional transducers A programmable SAW transversal filter utilizing a finger array and phase shifters to implement unidirectional transducers for providing low insertion loss and reduced or suppressed triple transient echo. A piezoelectric substrate has an input unidirection... | 10/01/2002 |
| 6369670 | Dynamically adjustable tapped delay line A circuit (43) generates one or more signals to be delayed by a corresponding time intervals. Tapped delay lines (40) are coupled to the signals, each tapped delay line including a plurality of delay elements (42) and having a plurality of exit points (E)... | 04/09/2002 |
| 6356143 | Method and apparatus for filtering radio frequency signals A variable bandpass filter system passes a selected range of frequencies while rejecting other frequencies in an RF input signal. The system includes a switch and an oscillator. The switch receives the RF input signal and an oscillating calibration signal... | 03/12/2002 |
| 6131105 | Calculation of a scalar product in a direct-type FIR filter The invention relates to a direct-type FIR filter, a method for calculating a scalar product in a FIR filter, and a method for designing a direct-type FIR filter. Successive words of a digital input signal are delayed in a delay line having delays (50A-50... | 10/10/2000 |
| 6121825 | Monolithic tunable recursive filter In a tunable recursive filter implemented in a microwave monolithic integrated circuit (MMIC), a second-order recursive filter included two first order filters, having first and second transmission lines, respectively, connected in parallel. An amplifying... | 09/19/2000 |
| 6107898 | Microwave channelized bandpass filter having two channels A channelized active bandpass filter having only two branches which provide respective frequency-selective feed-forward signal paths. The two signal aths have overlapping frequency response bands such that the combination of the two paths provides a compo... | 08/22/2000 |
| 5973578 | Programmable signal translating devices and method of programming such devices A programmable signal translating device, praticularly a transversal filter, includes a wave transport body for transporting a wave along its length, a first channel of electrical conductors having a plurality of code sections spaced along its length for ... | 10/26/1999 |
| 5877971 | Digital signal processing Digital signal processing (e.g. filtering) apparatus comprises pipelined digital signal processing means for generating each output sample of an output digital signal from input samples of an input digital signal by combining the input samples with a plur... | 03/02/1999 |
| 5870432 | Method for transmission line impulse response equalization and a device to perform this method A set of parameters (W) is calculated for an equalizer which equalizes a transmission line impulse response (LIR) in such a way that the equalized impulse response (EIR) approximates a target impulse response (TIR) with predetermined length (L). An error ... | 02/09/1999 |
| 5781063 | Continuous-time adaptive learning circuit An integrator-multiplier-integrator circuit scheme usable in transverse fers, a transverse filter employing such a circuit, and a method for using each. The multiplier-integrator-multiplier has a capacitatively loaded integrating amplifier fed by a trans... | 07/14/1998 |
| 5738525 | Cable attenuation simulator for training CATV technicians A simulator for simulating the attenuation characteristics of a length of coaxial cable in a cable television (CATV) network employs a diplex filter to separate the CATV signal and AC power into at least two separate signal paths. The AC power path has a ... | 04/14/1998 |
