Did You Know...
...Chester Carlson was a patent agent who tired of having to make multiple copies of patent applications using the only duplication method available at the time: carbon paper. In 1959 he came up with a new copying system and took it to IBM for evaluation. The "experts" at IBM determined potential sales to be only 5,000 units because people wouldn't want to use a bulky machine when they had carbon paper. Carlson's invention was the xerography process, the company founded on the system is Xerox.
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| Number | Title | Issue Date |
| 7462543 | Flash memory cell transistor with threshold adjust implant and source-drain implant formed using a single mask A method for forming an NMOS transistor for use in a flash memory cell on a P-type semiconductor structure includes forming a photoresist layer over the semiconductor structure and patterning the photoresist layer using a source/drain mask for the NMOS transistor; f... | 12/09/2008 |
| 7443148 | Constant on-time regulator with increased maximum duty cycle A buck switching regulator receives an input voltage and provides a switching output voltage on a switch output node using a minimum on-time, variable off-time feedback control loop. The buck switching regulator includes an on-time control circuit for generating a f... | 10/28/2008 |
| 7443008 | Lateral programmable polysilicon structure incorporating polysilicon blocking diode A programmable element includes a diode and a programmable structure formed in a polysilicon layer isolated from a semiconductor substrate by a dielectric layer. The diode includes a first region and a second region of opposite conductivity types. The programmable s... | 10/28/2008 |
| 7433302 | Ethernet network implementing redundancy using a single category 5 cable A method for providing redundancy in a daisy chain local area network employing Category 5 cabling for connecting network devices uses the normally unused twisted wire pairs in the single Cat 5 cable connecting adjacent network devices. The method includes forming i... | 10/07/2008 |
| 7432689 | Buck-boost control logic for PWM regulator A PWM regulator is operated either a buck mode or a boost mode depending on whether the input voltage is above or below the desired regulated output voltage. The technique uses two sawtooth ramps 180 degrees out of phase. Where the two ramps cross each other is a bu... | 10/07/2008 |
| 7417879 | PFM and current controlled switching regulator A circuit and method for controlling a switching regulator utilize a combination of variable off-time control (or frequency control) and variable peak current control to achieve high efficiency at a wide range of load conditions. A non-linear control circuit receive... | 08/26/2008 |
| 7408332 | Intelligent soft start for switching regulators A circuit, method, and system for intelligently soft starting switching regulators are provided. The circuit, method, and system provide for a switching circuit operable to couple an input voltage to an output of the switching regulator in response to a control sign... | 08/05/2008 |
| 7408994 | AC coupling system for wide band digital data with dynamic AC load An interface system couples a fixed impedance device to a receiver for transmitting data signals at different data rates at different times. The interface system includes elements that are connected to provide different time constants of responsiveness to data signa... | 08/05/2008 |
| 7398101 | Transmitter power level optimization and error correction technique A master transceiver automatically lowers its transmit power level at intervals until a slave transceiver no longer accurately receives the transmitted data. When the master detects an inaccurate transfer of data, the master incrementally increases the transmit powe... | 07/08/2008 |
| 7395287 | Numerical value conversion using a saturation limited arithmetic logic unit supporting variable resolution operands A device for performing numerical value conversion of a digital input value in a first unit to a second, natural unit where the digital input value is a digitized value of a first measurement parameter includes a look-up table storing an array of coefficients for pe... | 07/01/2008 |
| 7394729 | Time constant based fixed parameter assignment A method for assigning a value to a fixed parameter in an electrical device where the fixed parameter has multiple states includes associating a time value to each state of the fixed parameter, driving a first input terminal of the electrical device to a first volta... | 07/01/2008 |
| 7370069 | Numerical value conversion using a look-up table for coefficient storage A device for performing numerical value conversion of a digital input value in a first unit to a second unit being a natural unit includes a look-up table storing an array of coefficients for performing the numerical value conversion. The look-up table is indexed us... | 05/06/2008 |
| 7348621 | Non-volatile memory cells A non-volatile memory cell and method of fabrication are provided. The non-volatile memory cell includes a substrate of a first conductivity type, a first dopant region of a second conductivity type in the substrate, a second dopant region of the first conductivity ... | 03/25/2008 |
| 7325060 | Management system for hardware network devices A management system for supporting management functions of managed network devices is formed by a backend management network providing processing capability to handle management transactions. In one embodiment, the management system is coupled to a first and a secon... | 01/29/2008 |
| 7315052 | Power FET with embedded body pickup A power transistor formed on a semiconductor substrate and including a lateral array of polysilicon lines separated by alternating source and drain regions includes one or more body contact diffusion regions formed in the source regions where each body contact diffu... | 01/01/2008 |
| 7315585 | Clock-less serial data interface using a single pin A data communication method for receiving digital data on a data terminal includes receiving data pulses having a first pulse separation to represent a first logical data value and a second pulse separation to represent a second logical data value, generating a volt... | 01/01/2008 |
| 7307614 | Light emitting diode driver circuit Describe is a device for a multiplexing, output current-sensed, boost converter circuit which may be used as an LED driver. A boost converter LED driver circuit using a single set of passive external LC components for controlling the current through, and thus the ou... | 12/11/2007 |
| 7304464 | Switching voltage regulator with low current trickle mode For load currents greater than a threshold current, the voltage regulator operates in a conventional manner by fully turning on and off one or more switching transistors at a duty cycle necessary to maintain the output voltage a regulated voltage. Upon a load curren... | 12/04/2007 |
| 7273761 | Box-in-box field-to-field alignment structure A lithographic pattern includes a first scribe along an edge of a die region, and a second scribe along an opposing edge of the die region. The first scribe includes at least a first translucent box and a second translucent box. The second scribe includes at least a... | 09/25/2007 |
| 7265527 | Direct current multiplier A self-oscillating DCM is disclosed comprising two inductors that charge and discharge 180 degrees out of phase such that the charging inductor is conducting an upward ramping current and the discharging inductor is conducting a downward ramping current. A load rece... | 09/04/2007 |
| 7265041 | Gate layouts for transistors A transistor and a method of fabricating the transistor are provided. The transistor includes a semiconductor material comprising drain regions and source regions formed in alternating rows or columns. The transistor also includes polysilicon chains overlaying the t... | 09/04/2007 |
| 7259521 | Video driver architecture for AMOLED displays An AMOLED display system, including an AMOLED display panel receiving a video signal, includes a video driver receiving the video signal and generating a video drive signal indicative of the video signal and referenced to a positive power supply voltage of the displ... | 08/21/2007 |
| 7248097 | Voltage-activated, constant current sink circuit Voltage-activated and accurate current sink, and method of providing same. In one aspect, a circuit for accurately sinking current includes a zener diode coupled to a power source at the cathode of the zener diode, and first and second transistors, where the first t... | 07/24/2007 |
| 7245148 | Power saving method in an integrated circuit programming and control circuit A circuit in an integrated circuit having an input terminal to be coupled to a resistor network for selecting one of multiple digital states in the integrated circuit includes a voltage decode circuit, a control circuit and a power-up control circuit. The first inpu... | 07/17/2007 |
| 7218086 | Switching regulator with programmable output levels using a single input pin A switching regulator provides programming output current control through a single input terminal by modifying the reference voltage in the control loop of the switching regulator. The switching regulator includes a first input terminal receiving a program input vol... | 05/15/2007 |
| 7215108 | Method for starting a voltage-mode switching power supply into a biased load A method for starting up a voltage-mode switching power supply into a biased load includes computing a ratio of the load voltage at the biased load to an input voltage of the switching power supply, generating a first signal indicative of the duty cycle of the volta... | 05/08/2007 |
| 7202701 | Input/output circuit for handling unconnected I/O pads A circuit coupled to an input-output bond pad (I/O pad) in an integrated circuit including an input buffer, an output buffer and a pad management circuit. The pad management circuit receives a first data signal, a first output enable signal, and a configuration sign... | 04/10/2007 |
| 7195952 | Schottky diode device with aluminum pickup of backside cathode An integrated circuit package includes a semiconductor chip having a passivation layer forming the top surface of the semiconductor chip and a metal pad formed on the passivation layer and a discrete electronic device having a first terminal formed on a first surfac... | 03/27/2007 |
| 7184741 | Single chip radio receiver with decoder and controllable baseband filter A single chip receiver is disclosed herein. The chip only requires an external antenna for operation. A decoder is formed on chip for performing logical operations on demodulated digital data. A baseband filter is controlled by external control signals to have one o... | 02/27/2007 |
| 7183193 | Integrated device technology using a buried power buss for major device and circuit advantages A method for providing an improved integrated circuit device is disclosed. The method comprises the steps of providing active and passive areas in the substrate, providing a plurality of slots in the substrate after providing the active and passive areas, and oxidiz... | 02/27/2007 |
| 6963191 | Self-starting reference circuit A reference circuit provides a reference electrical characteristic such as a current or voltage using a low-threshold field effect transistor (FET) for improved start-up operation. The use of a low-threshold FET eliminates a stable operating point from occurring at ... | 11/08/2005 |
| 6242974 | Self-calibrating operational amplifier A stable, reliable, op-amp circuit overcomes the adverse affect of input offset voltages, VOSI, present at the input of op-amp. In one application, such VOSI-compensated op-amps employ a standard bandgap voltage input to achieve an improved vol... | 06/05/2001 |
