Did You Know...
...that the x-ray was discovered purely by accident? When German physicist Wilhelm Konrad von Roentgen was experimenting with cathode rays in 1895, he put an activated Crookes tube in a book and went out to lunch. When he returned, he discovered that a key that had also been placed in the book showed up as an image on the developed film!
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| Number | Title | Issue Date |
| 7394857 | Flexible versatile low-cost wireline transmit driver A versatile, programmable, low-cost transmit line driver is provided. The line driver includes a digital-to-analog converter that receives a digital input and provides an analog output. The line driver is reconfigurable between the voltage mode of operation. ... | 07/01/2008 |
| 7375559 | Differential comparator with a replica input stage to set the accurate bias current for improved common mode rejection Methods and apparatus for properly biasing differential comparators are provided. Using a feedback relationship, a bias for a main stage that receives a first differential input of the comparator is produced. Separately, a feedback relationship produces a bias for a... | 05/20/2008 |
| 7373575 | Method and apparatus for generating expect data from a captured bit pattern, and memory device using same Expect data signals are generated for a series of applied data signals having a known sequence to determine if groups of the data signals were properly captured. A first group of the applied data signals is captured, and a group of expect data signals are generated ... | 05/13/2008 |
| 7368955 | Current-balanced logic circuit In accordance with some embodiments, a current-balanced logic circuit includes a first sense amplifier, a second sense amplifier, and a current-source transistor which provides bias current to the first and second sense amplifiers. The first and second sense amplifi... | 05/06/2008 |
| 7362146 | Large supply range differential line driver A differential transmission line driver with supplemental current sources that overcome switching anomalies and EMU issues when the logic state of the driver is switching. During a logic transition, a current source, that is directed to the output of the driver, may... | 04/22/2008 |
| 7358814 | Differential amplifier and methods for use therewith A differential audio amplifier includes a differential input stage for producing an output voltage in response to a differential audio input signal. The differential input stage has a first bias voltage and a second basis voltage. A bias compensation module controls... | 04/15/2008 |
| 7358776 | Signal detection circuit and signal detection method It is intended to provide a signal detection circuit and a signal detection method capable of preventing influences of variations in transistor characteristics, occurrence of yield degradations of the signal detection circuit and capable of detecting differential in... | 04/15/2008 |
| 7359458 | Structures and methods for capturing data from data bit streams Structures and methods are provided for capturing data from a data bit stream. They primarily generate successive bit sample sequences that each comprise N interleaved bit sample phases, identify subsampling strings formed of less than N consecutive bit samples with... | 04/15/2008 |
| 7358777 | Current feedback amplifiers Current feedback amplifiers circuits that generate common mode (CM) and/or differential mode (DM) currents are provided herein. This description is not intended to be a complete description of, or limit the scope of, the invention. Other features, aspects, and objec... | 04/15/2008 |
| 7352221 | Programmable amplifiers with positive and negative hysteresis Programmable dynamic amplifiers with hysteresis are provided. The hysteretic amplifiers have a first input voltage threshold when the output voltage is at a high voltage and a second input voltage threshold when the output voltage is at a low voltage. A multiplexer ... | 04/01/2008 |
| 7352211 | Signal history controlled slew-rate transmission method and bus interface transmitter A signal history controlled slew-rate transmission method and bus interface transmitter provide an improved channel equalization mechanism having low complexity. A variable slew-rate feed-forward pre-emphasis circuit changes the slew rate of the applied pre-emphasis... | 04/01/2008 |
| 7348807 | Electric circuit for providing a selection signal An electric circuit for providing a selection signal being used to select a control value of a control variable which oscillates, at steady state, about a reference value about a first control value and a second control value with a first period duration comprises a... | 03/25/2008 |
| 7348805 | Chip-to-chip digital transmission circuit delivering power over signal lines A chip-to-chip digital transmission circuit includes a differential driver portion, a pair of differential signal transmission lines connected to the driver portion, and a receiver portion connected to the transmission lines, an output node of which reproduces a dig... | 03/25/2008 |
| 7348808 | Method and apparatus for detection of high-speed electrical signals A signal detector includes, in part, first and second peak detectors, a comparator and an amplifier. The first peak detector generates a first signal in response to receiving an incoming signal. The second peak detector generates a second signal in response to recei... | 03/25/2008 |
| 7349939 | Processor, a circuit and a method for processing images in a parallel processor network A processor, a circuit and a method for processing images in an analog parallel processor network. A processor comprises a plurality of circuits, a bias transistor and an output transistor. A circuit comprises a first transistor and a second transistor, which receiv... | 03/25/2008 |
| 7342448 | Power output stage A class D power output stage for switching a supply voltage comprises a limiting transistor with a controllable path and a control terminal, a complementary limiting transistor with a controllable path and a control terminal, a switching transistor with a controllab... | 03/11/2008 |
| 7342526 | Digital-to-analog converter using plural transistors having the same operating characteristics A digital-to-analog converter converts a digital input signal into an analog signal. The digital-to-analog converter includes: a power-supply unit for outputting voltages of different magnitudes through plural output terminals thereof; plural switches connected to t... | 03/11/2008 |
| 7342420 | Low power output driver A low power output driver includes one of a regulated reduced voltage source that receives a supply voltage and outputs a regulated reduced voltage that is a lower voltage than the supply voltage. The driver also includes a first driver input that receives a first l... | 03/11/2008 |
| 7342449 | Differential amplifier, and data driver of display device using the same Disclosed is a Rail-to-Rail amplifier including a plurality of differential pairs of a first conductivity type and a plurality of differential amplifiers of a second conductivity type each with one of an input pair thereof constituting an input terminal, a different... | 03/11/2008 |
| 7339422 | Amplifier circuit and display device Offset canceling amplifier circuit in which a high accuracy of output with a suppressed output offset is achieved and a variation in a slew rate is also suppressed, and a display device having the amplifier circuit. A first differential pair (M5, M6) c... | 03/04/2008 |
| 7339963 | High speed data channel including a CMOS VCSEL driver and a high performance photodetector and CMOS photoreceiver A high speed optical channel including an optical driver and a photodetector in a CMOS photoreceiver. The optical channel driver includes a FET driver circuit driving a passive element (e.g., an integrated loop inductor) and a vertical cavity surface emitting laser ... | 03/04/2008 |
| 7336114 | High-speed latching technique and application to frequency dividers The inventive technique can dynamically adjust the current being applied within the components of a prescaler or divider. This dynamic scaling of the current can improve the speed of the divider by a factor of two or reduce the average current in half when compared ... | 02/26/2008 |
| 7336107 | Comparator circuit and control method thereof This invention provides a comparator circuit which outputs a stable waveform without oscillation even if a gradient of a change of a comparison input signal is small and determines a magnitude of the comparison input signal within a predetermined threshold value reg... | 02/26/2008 |
| 7336904 | Electro-magnetic interference reduction filter for an optical transceiver An optical transmit circuit that includes an electro-optic transducer driver and an electro-magnetic interference (“EMI”) reduction filter. The EMI reduction filter is coupled to an output terminal of the electro-optic transducer driver. This allows the EMI redu... | 02/26/2008 |
| 7332932 | Serial link receiver with wide input voltage range and tolerance to high power voltage supply A circuit device and method for designing a serial link receiver, which accommodates a wide input voltage range and provides tolerance to high termination voltages. The receiver is designed with a pair of RC networks connected inline between the input and the preamp... | 02/19/2008 |
| 7332950 | DLL measure initialization circuit for high frequency operation A memory device, delay lock loop circuit (DLL) and DLL reset circuitry are described. The DLL includes a shift register and a measured delay for pre-loading the shift register. The reset circuitry selectively filters a clock signal propagation through the measured d... | 02/19/2008 |
| 7332953 | Circuit and method for controlling the threshold voltage of transistors A control unit, for controlling a threshold voltage of a circuit unit having transistor devices, includes a reference circuit and a measuring unit. The measuring unit is configured to measure a threshold voltage of at least one sensing transistor of the circuit unit... | 02/19/2008 |
| 7330390 | Noise resistant small signal sensing circuit for a memory device Apparatus and method for data sensing circuitry that uses averaging to sense small differences in signal levels representing data states. The apparatus periodically switches the coupling of input terminals and output terminals of an integrator circuit from a first c... | 02/12/2008 |
| 7330075 | Output impedance control circuit and control method thereof The invention provides an apparatus and a method for adjusting an output impedance of an output stage. The apparatus comprises a detector for outputting a direct current potential corresponding to the impedance of the output stage circuit. It also comprises a contro... | 02/12/2008 |
| 7327399 | Method and a circuit for deriving a synchronisation signal from a video signal A method for deriving a synchronisation signal (35) from a video signal comprises tracking the blanking level (107) of the video signal with first and second slice level signals (26, 27) and tracking the sync tip level (110) of the horizo... | 02/05/2008 |
| 7327620 | Differential input buffer for receiving signals relevant to low power Disclosed herein are exemplary embodiments of an improved differential input buffer for receiving low power signals and associated methods. The disclosed buffer circuit comprises at least one differential amplifier for receiving as inputs an enable signal (e.g., a c... | 02/05/2008 |
| 7327184 | Low-power multi-level pulse amplitude modulation driver and semiconductor device having the driver A low-power multi-level pulse amplitude modulation (PAM) driver, and a semiconductor device having the same, in which the multi (M)-level PAM driver includes a load unit, first and second current sources, a pair of first input transistors, a pair of second input tra... | 02/05/2008 |
| 7321239 | Differential line receiver In a differential line receiver circuit having differential amplifier circuit where output rise and fall times are influenced by the ability of internal current sources to charge parasitic capacitances, a feedback circuit is provided to tune those current sources so... | 01/22/2008 |
| 7321253 | Multiplier A conventional multiplier which uses a MOS transistor has a subject that, in order to compensate for a variation of a bias voltage or the like, it is necessary to add a complicated correcting circuit to an outputting section or the like, and the circuit scale become... | 01/22/2008 |
| 7315187 | Comparator for input voltages higher than supply voltage A comparator has first and second current paths, each passing from an input through a transistor, through a current source to ground, the second current path also having a reference voltage drop element coupled in series with the second input. The gates of the trans... | 01/01/2008 |
| 7315220 | Voltage controlled oscillator A voltage controlled oscillator (VCO) having a single stage ring-oscillator having both coarse and fine control of the frequency of oscillation is described. In an embodiment the VCO may include a first n-channel latch having a first output and a second output; a fi... | 01/01/2008 |
| 7312643 | Differential current driver and data transmission method A differential current driver has a current source that supplies current selectively to two output terminals according to data to be transmitted. A comparison circuit compares the current output by the current source with a reference value and generates a control si... | 12/25/2007 |
| 7313034 | Low supply voltage temperature compensated reference voltage generator and method A reference voltage generator uses a conventional forward junction voltage generating device and a conventional thermal generator to generate a thermal voltage. The forward junction voltage and the thermal voltages have respective thermal sensitivities that act oppo... | 12/25/2007 |
| 7304506 | Differential output circuit and semiconductor device having the same A differential output circuit first and second transistors forming a differential pair and having control electrodes input with binary signals, a constant current circuit supplying a constant current to the first and second transistors, and a protection circuit prot... | 12/04/2007 |
| 7304903 | Sense amplifier circuit A sense amplifier circuit includes a first double-gate metal oxide semiconductor field effect transistor (DGMOSFET) having a first gate defining a first input to the circuit, a second gate and an output being coupled to a first output of the circuit and a second DGM... | 12/04/2007 |
