Did You Know...
...that in the early 1940s GE engineer James Wright was charged with a task of utmost importance to the war effort: develop a cheap substitute for rubber that could be used to produce tires, gas masks and a whole host of military gear. Wright tackled the task diligently -- and wound up inventing Silly Putty.
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| Number | Title | Issue Date |
| 5857075 | Method and integrated circuit for high-bandwidth network server interfacing to a local area network A single-chip, network interface controller (NIC) integrated circuit (IC) with a host interface and arbiter common to two 10BASE-T ETHERNET local area network (LAN) segments with respective unshielded twisted pair interfaces, encoder-decoders, medium acce... | 01/05/1999 |
| 5848438 | Memory mapping defect management technique for automatic track processing without ID field Defect management for automatic track processing without an ID field, processes defect information for a track on a magnetic media within a disk drive system. A system which uses any method of defect management including linear replacement, sector slippin... | 12/08/1998 |
| 5844378 | High side driver technique for miniature cold cathode fluorescent lamp system A circuit for supplying power to a fluorescent lamp comprising a buck regulator with a high side drive. A dc battery is coupled to a drain of a first transistor. A source of the first transistor is coupled to an inverter for powering the lamp. A first con... | 12/01/1998 |
| 5828700 | Adaptive equalizer circuit An adaptive equalizer is configured to reconstruct electronic signals which are transmitted over signal cables, such as twisted pair cables. The equalizer satisfactorily reconstructs the signals over a broad range of cable lengths. The degradation charact... | 10/27/1998 |
| 5808455 | DC-to-DC converter having hysteretic current limiting A DC-to-DC converter having hysteretic inductor current limiting and that does not have a resistor continuously carrying the inductor current. A voltage supply is coupled to a drain of a first transistor. A source of the first transistor is coupled to a f... | 09/15/1998 |
| 5793168 | Active deceleration circuit for a brushless DC motor A circuit for driving a brushless dc motor includes an active deceleration circuit for rapidly slowing the motor. A phase locked loop senses a position of the rotor for commutating from a drive state to a next drive state in a sequence of drive states at ... | 08/11/1998 |
| 5791914 | Electrical socket with floating guide plate A socket for connecting the contact pads (34) of an electrical circuit board (5) to the contact points (32) of an integrated circuit package (14). The socket has a socket body (7) including a first plurality of holes (27) and a floating guide plate (12) i... | 08/11/1998 |
| 5790752 | Efficient in-line fluid heater A highly efficient in-line fluid heater is suitable for heating ultra-pure fluids. Preferably, the heater can be used for heating various fluids, including water, as part of a "wet bench" system used in a wafer processing fabrication facility for the semi... | 08/04/1998 |
| 5764409 | Elimination of vibration by vibration coupling in microscopy applications A portable emission microscope for analyzing failures in an integrated circuit chip while the chip is contained within a wafer sorter. A base for the microscope is placed over an opening in the wafer sorter. A translational apparatus is attached to the ba... | 06/09/1998 |
| 5757174 | Current sensing technique using MOS transistor scaling with matched current sources A technique for sensing current that employs an internal current sensing resistor. Two current sources of small and equal magnitude pull currents from two identical PNP transistors. Two PMOS transistors supply current to the PNP transistors. The PMOS tran... | 05/26/1998 |
| 5754012 | Primary side lamp current sensing for minature cold cathode fluorescent lamp system A circuit for sensing a current in a fluorescent lamp. A control system comprises a buck regulator circuit for supplying a buck current, an inverter circuit for receiving the buck current and for generating a lamp voltage, a circuit for sensing a current ... | 05/19/1998 |
| 5747360 | Method of metalizing a semiconductor wafer A method for metallizing semiconductor materials includes two processing steps. In the first step, a layer of an alloy of conductive metal, such as aluminum, and an Alloy Material such as hafnium, tantalum, magnesium, germanium, silicon, titanium, titaniu... | 05/05/1998 |
| 5748442 | Personal computer and chassis having interchangeable trim plates for horizontal model and tower model configuration, one trim plate having a larger periphery for use as a base plate A personal computer chassis having increased reliability, versatility and decreased manufacturing costs. In a first embodiment, a disk drive is installed in the chassis in a first orientation for resting the computer on a desk top or in a second orientati... | 05/05/1998 |
| 5742151 | Input current shaping technique and low pin count for pfc-pwm boost converter An integrated circuit controller for power factor correction circuit that provides unity power factor by sensing only a current in the power factor correction circuit and a dc supply voltage. The power factor correction circuit is coupled to a circuit for... | 04/21/1998 |
| 5742153 | Coasting power supply for AC power system waveform measuring instrument A power supply for an instrument that measures waveforms on AC (alternating current) power systems. Under ordinary circumstances, the power supply draws its power from the signal that the instrument measures. The power supply includes energy storage means... | 04/21/1998 |
| 5734129 | Forms for use with handwriting capturing device The present invention provides novel methods, forms and devices for simultaneously capturing handwriting on one or more forms and on an electronic device including a membrane digitizer, wherein the forms are integrated with the digitizer.. Proper alignmen... | 03/31/1998 |
| 5734926 | Direct memory access controller in an integrated circuit A direct memory access controller controls many direct memory access ports using a token passing scheme. The system multiplexes the port's accesses to external random access memory by daisy-chaining a loop of direct access memory ports and passing the tok... | 03/31/1998 |
| 5731802 | Time-interleaved bit-plane, pulse-width-modulation digital display system A time interleaved bit addressed weighted pulse width modulation (PWM) method and apparatus reduces the bandwidth requirement necessary for providing a plurality of data entries regarding multiple points of information. As is well known, a weighted PWM sc... | 03/24/1998 |
| 5719532 | Horizontal lock detector A horizontal lock detector circuit monitors charge pump control signals within a horizontal phase-lock loop to determine when the sampling pulses generated by the video system are locked in phase with the synchronization pulses of the input composite vide... | 02/17/1998 |
| 5717350 | Degenerated differential pair waveform builder A degenerated differential pair waveform builder has a single ramp generator control circuit and a plurality of differential pairs. A trigger input is generated and input to the ramp generator control circuit. The ramp generator control circuit then gener... | 02/10/1998 |
| 5717742 | Electronic mail system having integrated voice messages In a computer network having a plurality of interconnected terminals and a shared memory device for storing digital data, a message handling system for sending and retrieving both voice and text messages over the computer network. A voice message is input... | 02/10/1998 |
| 5714897 | Phase-shifted triangle wave generator A signal generator generates a reference signal, centered about a reference voltage and having a predetermined period. The signal generator also generates output signals P and Z. The output signal P is a squarewave which changes levels at the peaks of the... | 02/03/1998 |
| 5698912 | Brushless motor with torque and speed proportional coolant flow A brushless electric motor has a fluid-tight housing, an internal rotor which is connected to an output shaft, stator plates which are disposed at a radial spacing from the rotor, a coolant delivery line leading into the interior of the housing, and a coo... | 12/16/1997 |
| 5694125 | Sliding window with big gap data compression system A sliding window with big gap data compression system is simple to implement and gives good compression over a wide variety of bilevel images. A sliding window compressor with a very small window size is utilized in conjunction with a storage buffer which... | 12/02/1997 |
| 5691663 | Single-ended supply preamplifier with high power supply rejection ratio A single-ended input amplifier circuit for use within a magnetic media storage system includes circuits for concurrently biasing and amplifying signals generated by a magnetoresistive element. The amplifier receives power from a single-ended power supply.... | 11/25/1997 |
| 5687579 | Double circuited refrigeration system with chiller A more efficient system for cooling a load to very low temperatures by utilizing a double circuited refrigeration design. The design incorporates an air cooled condenser in a first circuit coupled in parallel with a water cooled condenser. The water coole... | 11/18/1997 |
| 5689452 | Method and apparatus for performing arithmetic in large galois field GF(2n) A method and apparatus for decoding Reed-Solomon codes in large Galois Fields GF(2n) represents the finite field as a quadratic extension field of one or more subfields GF(2m). This type of field representation allows embedded subfie... | 11/18/1997 |
| 5689309 | Control circuit for mixing two video signals A mixer control circuit generates content control signals which are used by a mixer circuit to control the content of an output signal. The output signal will include either an analog signal, a digital signal or a mixture of the analog and digital signals... | 11/18/1997 |
| 5689308 | Vertical reset genereator circuit A vertical reset generator monitors a composite video signal and generates a vertical reset pulse which is active during the presence of serration pulses within the composite video signal. The synchronization pulses within the input composite video signal... | 11/18/1997 |
| 5689167 | Two-phase electronic control of a three-phase induction motor A circuit for powering a three-phase AC induction motor. The circuit generates a first signal of the form Vdc+A sin (2πft-0°) and a second signal of the form Vdc+A sin (2πft-90°) as is done in conventional circuits for powering two-phase AC induction ... | 11/18/1997 |
| 5686974 | Method of and apparatus for providing a high speed video switch A high-speed video switch uses a current-mode switch to switch between a first input video signal and a second input video signal. Each of the first and second input video signals are input to the video switch through clamping circuits which clamp a blank... | 11/11/1997 |
| 5682337 | High speed three-state sampling The present invention describes a novel method and apparatus for sampling an input/output pin of an electronic device at high speeds, comprising the steps of: driving the device input/output pin through a series resistor with a middle voltage between the ... | 10/28/1997 |
| 5680028 | Charger for hand-held rechargeable electric apparatus with reduced magnetic field An improved system for charging a battery of a hand held device, such as an electric toothbrush. The system has a first coil coupled around a first magnetic core. The first magnetic core forms a substantially closed magnetic path except for a core gap. An... | 10/21/1997 |
| 5675392 | Mixer with common-mode noise rejection A mixer circuit with common-mode noise rejection combines input signals into a single output signal in a predetermined ratio and reduces the effect of noise within the single output signal. The input signals and their respective ground signals are all cou... | 10/07/1997 |
| 5672959 | Low drop-out voltage regulator having high ripple rejection and low power consumption A low drop-out regulator circuit that has high ripple rejection and low power consumption. A first local feedback loop is a high-speed, high-bandwidth loop that actively rejects noise from the input source to the regulator. A second feedback loop, having ... | 09/30/1997 |
| 5673295 | Method and apparatus for generating and synchronizing a plurality of digital signals A hardware interface generates and synchronizes precisely timed digital signals. The hardware interface receives data bits and associated timing information for application to a Hardware Modeling Element (HME). Preferably there are at least two modules, e... | 09/30/1997 |
| 5667115 | Vehicle interior storage container An interior vehicle storage container includes one or more storage compartments securable by one or more substantially flat covers. Preferably, three storage compartments are integrally formed within a single enclosure and separated and covered by three s... | 09/16/1997 |
| 5663874 | Multiple output flyback DC-to-DC converter with synchronous rectification and constant on-time current mode control A multiple output flyback DC-to-DC converter with synchronous rectification and constant on-time current-mode control. A controller includes a constant on-time, minimum off-time oscillator that is coupled to control a gate of a first transistor which cont... | 09/02/1997 |
| 5661427 | Series terminated clock deskewing apparatus A series clock deskewing apparatus uses a series terminated single transmission line system to deliver a clock signal to a load. A plurality of series clock deskewing apparatuses are implemented, one for each load, so that the clock signal is delivered to... | 08/26/1997 |
| 5661592 | Method of making and an apparatus for a flat diffraction grating light valve A deformable grating aparatus for modulating light is made by forming an insulating layer on a substrate, forming a first conductive layer on the insulating layer and then forming a sacrificial layer thereon. The sacrificial layer and the first conducting... | 08/26/1997 |
