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7446630 Phase shifter circuit  
A full range phase shifter circuit includes a power divider, a hybrid coupler, a differential phase shifter, a power combiner and switched attenuators. The power divider, hybrid coupler,...
7382826 Method and apparatus for the control of a decision feedback equalizer  
Input data segments of received symbols are continuously stored in a decision feedback equalizer buffer at a symbol rate S. Output data sections of received symbols are supplied from the decision...
7170011 System and method for modifying electrical characteristics  
System and methods for modifying an electrical parameter of an electrical component are described. The system includes an electrical component disposed on a circuit board and a dielectric material....
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...
6150901 Programmable RF/IF bandpass filter utilizing MEM devices  
A programmable high frequency (HF) bandpass filter is disclosed. The programmable filter has a tunable bandwidth and center frequency over a large range of the radio frequency (RF) and intermediate...
5887025 Matched filter acting in charge domain  
A charge mode operation circuit dedicated to detect the correlation between analog input signal and digital code, and for realizing by "RAKE method" the path diversity reception from the...
5726710 Low noise high performance charge detection system  
The charge coupled device (CCD) charge detection system includes a first CCD register having N non-destructive charge readouts where N is an integer greater than one, and N second CCD registers...
5615234 Digital high-pass filter having baseline restoration means  
A digital high-pass filter derived from a digital low-pass filter of conventional design. The digital low-pass filter periodically calculates respective low-pass filter output values. Corresponding...
5488540 Printed circuit board for reducing noise  
A multi-layered printed circuit board is provided. This printed circuit board includes generally a substrate formed with first and second base layers, a first conductive pattern block formed on a...
5420448 Complementary acoustic charge transport device and method  
A complementary acoustic charge transport circuit element comprises first and second buried channels. Each of the channels is comprised of a piezoelectric semiconductor and each channel has a...
5394003 Acoustic charge transport device buffered architecture  
An acoustic charge transport device comprises a substrate with a layer disposed thereon; a channel disposed within the layer for providing a propagation path for a surface acoustic wave; a contact...
5376906 CCD filter having comb-shaped characteristics  
A CCD filter according to the present invention can provide good comb-shaped characteristics with no adjustments, and can be produced at low cost. The input section 15 of a first CCD 11 is...
5243556 Acoustic charge transport memory device  
A sampling device operating as a buffer between a first data signal and a relatively slow processing device accepts the input signal and stores samples of it on a SAW traveling past an input...
5243307 Act device having optical control of saw velocity  
A high speed analog to digital converter system employs a set of ACT devices in parallel to buffer a high speed data sampling rate to the processing rate of the analog to digital converters...
5225798 Programmable transversal filter  
A transversal filter comprises an acoustic charge transport device comprising an input contact for introducing a signal into a buried channel through which the signal is transported by a high...
5159299 HACT electrode configuration  
A heterostructure acoustic charge transport (HACT) device having a number of signal tap electrodes has revealed unexpected insensitivity to electrode spacing and unexpected sensitivity to electrode...
5144262 Acoustic charge transport selectable delay line and delay line oscillator formed therewith  
A delay device comprises a semi-conductor chip having acoustic charge transport channel disposed therein; a contact operably connected to and disposed at one end of the channel for injecting an...
5034793 Time delay modulation and correction device  
An acoustic charge transport device (ACT) alters the intersection of an associated surface acoustic wave (SAW) electric potential with the static depletion potential and the input contact potential...
5001445 Transport processor filter  
A new structure for electro-magnetic signal filters is described. The structure of the invention incorporates ideal time lag elements having delay values selected to match an arbitrarily selected...
4994772 Acoustic charge transport processor  
An acoustic charge transport (ACT) device is easily constructed to provide for variable carrier frequency operation or, alternatively, for variable time delays. Variable carrier frequency operation...
4963773 Low pass/high pass filter phase shifter  
A compact low pass/high pass filter phase shifter including a semiconductor switch having a control electrode and first and second load electrodes; a first inductance connected in series with one...
4922509 Method of implementing programmable matched filters, and corresponding filters and filter banks  
The invention relates to a method of implementing programmable tuned filters, in particular for telegraph signal receivers, and also to tuned filters obtained by the method. A resonator (16)...
4885787 High-speed digital image processing apparatus  
An image processing apparatus is provided which is capable of real time image processing, especially filtering, without generating a delay in a frame memory. A cascade filtering circuit filters...
4859991 Electronic article surveillance system employing time domain and/or frequency domain analysis and computerized operation  
A magnetic article surveillance system utilizing microcomputer control and unique time domain and frequency domain information gathering channels whose information is processed by the microcomputer...
H000609 CCD transversal filter using weighted input  
An analog transversal filter includes a charge transfer delay line, including a plurality of cells for storing electrical charge, and a multiphase clock to transfer electrical charge from cell to...
4733407 Charge-coupled device  
The invention relates to a charge-coupled device, in which the channel is provided with two or more separation regions for obtaining a desired charge subdivision, for example, for a transversal...
4709381 CCD focal plane array convolver  
A semiconductor CCD focal plane array convolver is taught which permits performing convolution functions on the focal plane array chip. An X-Y array of photosensitive pixels is disposed in a...
4683580 CCD output signal processing circuit for use in an image pick-up device  
A CCD output signal generating circuit includes a CCD type charge transfer device for transferring and outputting signal charges in response to the drive signal of a frequency f c , an output...
4672644 Compensator for charge transfer inefficiency in charge coupled devices  
A technique for compensating for charge transfer inefficiency in charge coupled devices. A convolver output is summed concurrently with a previous convolver output delayed by a sample period and...
4661788 Tapped CCD delay line with non-destructive charge sensing using floating diffusions  
A CCD delay line may be tapped using a floating-diffusion electrometer at the tap. Charge sensing is made non-destructive by not resetting the floating diffusion to a reset drain after charge...
4658225 Amplitude insensitive delay lines in a transversal filter  
A transversal filter is provided which includes a delay circuit comprising a plurality of cascaded saturating circuit elements. The delay circuit has a series of taps from which signals with...
4639940 Charge coupled device with meander channel and elongated, straight, parallel gate electrodes  
A charge coupled device has a meandering charge path formed by a channel stop of unique shape. The channel stop is of interdigitated pattern, and the gate electrodes form a straight strip. The...
4616334 Pipelined programmable charge domain device  
Programmable signal processing apparatus for multiplying a sampled analog signal by a multiple bit digital word coefficient. All signal processing operations are accomplished by the splitting,...
4612522 Mask programmable charge coupled device transversal filter  
A programmable charge coupled device transversal filter 5 includes a charge coupled device register 10 for receiving and delaying incoming analog signals, a series of floating gate charge detectors...
4612521 Charge-coupled transversal filter  
The invention relates to a charged-coupled transversal filter of the parallel-in series-out (PISO) type having a buried channel of one conductivity type and zones diffused into the channel of the...
4603301 Amplitude insensitive delay lines in a frequency modulated signal detector  
A circuit for detecting a Frequency Modulated (FM) signal is provided. An amplitude limited FM signal is propated through a delay circuit comprising a plurality of cascaded saturating inverters. A...
4586010 Charge splitting sampler systems  
Methods and apparatus for high speed signal sampling and recording utilizing mutual repulsion field-induced splitting of charge carriers in a charge transfer channel.
4575866 Charge transfer filter structure including a splitter and equilibrator  
A charge transfer filter utilizing a charge transfer accumulator structure for exponential smoothing of sampled data signals is described. The charge transfer accumulator structure performs charge...
4562417 Transverse charge transfer filter  
In this transverse charge transfer filter having N MOS capacitors arranged on the same semiconductor substrate and provided with electrodes, the electrode of every other MOS capacitor has its ends...
4555770 Charge-coupled device Gaussian convolution method  
A Gaussian convolution is produced in a CCD imager or shift register by a method involving a special clocking sequence. The principle of operation, analagous to the process of diffusion, involves...
4554858 Digital filter for an electronic musical instrument  
A digital filter imparting a desired tone color to the tone signal is realized by the combination of a digital pole filter and a digital zero filter capable of controlling a pole and a zero in an...
4541068 Reducing noise in introducing bias charge into charge transfer devices  
A bias charge (commonly known as a "fat zero") is divided into a plurality, n, of equal parts. These equal parts are differentially delayed, and the results appearing parallel in time are summed to...
4539536 Parameter-setting approach to obtain high performance CTD transversal filters from devices with significant CTI and FPN  
A charge-transfer-device (CTD) transversal filter which makes use of tap-weight-adjustment circuitry for removing effects of charge-transfer inefficiency (CTI) and fixed-pattern noise (FPN). The...
4539537 Transversal filter having parallel inputs  
A transversal filter with an analog shift register has a plurality of parallel inputs and a serial output at which a filtered signal appears. An object is to provide as simple as possible a...
4528684 Charge-coupled device output circuit  
A circuit for obtaining an output from a CCD type signal processing circuit should operate satisfactorily in a high frequency band covering, for instance, video signals. For this purpose, the...
4524424 Adaptive spectrum shaping filter  
A transversal adaptive filter with a tap weight computer having a respective first and second input responsively coupled to a respective output and input of the filter, and including spectrum...
4521752 Passive transient recording systems  
Methods and apparatus for recording pulse signal information utilizing threshold integrating devices in which a pulse shaped signal is applied to a plurality of threshold integrating devices each...
4516263 Spatially integral, video signal processor  
A video signal processor, particularly for use in identifying light source position, in which a video signal stream from an image detector is processed directly on a substrate using charge coupled...
4513260 Programmable frequency converting filter  
Disclosed is a programmable frequency converting filter having a plurality of selectable operating modes, and having frequency passbands of a unique width for each of the operating modes. The...
4510522 CCD Comb filter employing floating gate subtractor techniques  
A charge transfer device (CTD) delay line comb filter for separating the frequency interleaved luminance and chrominance components of a composite video signal is provided wherein signal charges...
Matches 1 - 50 out of 240 1 2 3 4 5 >