Did You Know...
...that two musicians were responsible for the invention of color print film? Fascinated by photography, Leopold Godowsky and Leopold Mannes worked together to produce an easy-to-use, practical color film. They worked full time as music teachers and gave concerts while experimenting during their off hours in Mannes' kitchen. Their success earned them full-time, well-paying jobs at Kodak and their efforts resulted in Kodachrome film, which was introduced in 1935.
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| Number | Title | Issue Date |
| 7692467 | Capacitance for decoupling intermediate level power rails Capacitive decoupling circuits and methods of making the same are disclosed. In one aspect, a method of manufacturing is provided that includes providing a semiconductor chip with a first power rail for a first no-load bias level and a ground rail. A first voltage d... | 04/06/2010 |
| 7412208 | Transmission system for transmitting RF signals, power and control signals via RF coaxial cables A transmission system for RF signals, power and control signals over RF coaxial cables is disclosed. A coaxial cable line interconnects two devices, such as an instrument and a remote coupler. A control signal (e.g., data bit) and RF signals are multiplexed onto the... | 08/12/2008 |
| 7372323 | Resonance limiter circuits for an integrated circuit In one embodiment, an integrated circuit comprises resonance limiter circuits coupled to a power supply connection of the integrated circuit. The resonance limiter circuits are configured to detect oscillation on the power supply connection at a resonant frequency, ... | 05/13/2008 |
| 7332971 | Multi-gigabit/s transimpedance amplifier for optical networks A Gigabit/s transimpedance amplifier system includes a forward-path amplifier section with a very large bandwidth and an overall frequency-selective feedback section which is active only from DC to low frequencies. The forward-path of the amplifier comprises a regul... | 02/19/2008 |
| 7212067 | Voltage regulator with bypass for multi-voltage storage system A system and method for supplying power to a peripheral device where the voltage supplied by a host device may be the voltage required for operation of the peripheral, or a higher voltage. A memory system includes a voltage regulator including an input, and output a... | 05/01/2007 |
| 7178992 | Apparatus and method of signal detection in an optical transceiver The present invention includes an optical transceiver having a fiber module with an optical data input and an electrical data output. The fiber module further includes a signal detect output that indicates the receipt of valid optical data. A physical layer device h... | 02/20/2007 |
| 7173481 | CMOS reference voltage circuit A CMOS reference voltage circuit, preferably formed on a semiconductor integrated circuit, and outputting a reference voltage having a temperature-independent characteristic, comprises first and second diode-connected transistors (or diodes), respectively grounded a... | 02/06/2007 |
| 7161417 | Loop filter and method for generating stable control voltage of the same A loop filter and a method for adjusting its compensating current to make a control voltage of the loop filter more stable. The loop filter includes a charge/discharge path for receiving a control current and constituted by a first resister and a capacitor, a second... | 01/09/2007 |
| 7157954 | Semiconductor type two phase locked loop filter There is described a semiconductor Type Two phased locked loop filter having a passive capacitor part and a variable active resistor part, the variable active resistor part being integrated with the passive capacitor part. Integrating an active variable resistor wil... | 01/02/2007 |
| 7129876 | Digital-analog converter A digital-analog converter includes a counter (13) for performing counting operation according to clocks (CK1, CK2), a comparator (12) for comparing the count value to a digital input value and outputting the clocks (CK1, CK2 | 10/31/2006 |
| 7131033 | Substrate configurable JTAG ID scheme A circuit generally comprising a core circuit and a test access port circuit. The core circuit may be configurable among a plurality of functions in response to a signal. The test access port circuit may be configured to determine an identification value in response... | 10/31/2006 |
| 7123301 | Pixel gain amplifier A correlated double sampling pixel gain amplifier includes an operational amplifier, an input sampling capacitor, and a feedback capacitor. The input capacitor samples the input signal during a first time phase and the feedback capacitor receives the signal charge f... | 10/17/2006 |
| 7057449 | Noise cancellation in mixed signal environment A method of canceling noise in analog circuits is described along with noise cancellation circuits. Analog circuits are sensitive to noise. Especially in mixed signal environments where digital circuits and analog circuits are combined, the noise generated by relati... | 06/06/2006 |
| 7057450 | Noise filter for an integrated circuit A noise filter for an integrated circuit is proposed. The noise filter comprises a CMOS inverter and two capacitors. The input of the CMOS inverter is coupled with an input pad of the integrated circuit and the output of the CMOS inverter is coupled with an input bu... | 06/06/2006 |
| 7035417 | System for reducing noise in the reproduction of recorded sound signals A noise reduction system is connected to at least two input channels for receiving input signals that have substantially identical program content but differing instantaneous noise transients. The system selects a filtered input signal that has the lowest instantane... | 04/25/2006 |
| 7030702 | Optical receiver with wide dynamic range transimpedance amplifier An optical component, such as an optical receiver, is provided that includes a detector configured to receive a signal from an optical fiber and to communicate with a translationl module of the optical component. A transimpedance amplifier of the optical component i... | 04/18/2006 |
| 7020164 | System and method for special signaling with customer premises equipment A system and method are provided for special signaling with customer premises equipment. The system includes loop termination equipment coupled to a local loop and comprising a signal generator. The system also includes customer premises equipment coupled to the loc... | 03/28/2006 |
| 7015747 | Device for controlling a frequency response by scaling an impedance Provided is a device for controlling a frequency response by scaling an impedance. The device includes a filter and a duty ratio controller. The filter generates an output signal after removing a frequency from an input signal, and comprises a first impedance compon... | 03/21/2006 |
| 7006520 | System and method of operation for managing data communication between physical layer devices and ATM layer devices A system for managing data communication between physical layer devices and ATM layer devices in a cell based ATM network is disclosed. A plurality of low speed physical layer devices a high speed physical layer device are connected to a bus. A bus interface device ... | 02/28/2006 |
| 6995605 | Resonance suppression circuit A resonance suppression circuit is provided to suppress resonance on a power grid of a chip or die. The resonance suppression circuit may include a band-pass filter portion, a comparator portion, an amplification portion and a current dissipation portion. The band-p... | 02/07/2006 |
| 6995618 | VCO feedback loop to reduce phase noise A phase adjustment module in a voltage controlled oscillator (VCO) samples a VCO oscillation to detect changes in the oscillation frequency and produces a corresponding correction voltage that is feedback to the VCO input to correct the frequency change. A plurality... | 02/07/2006 |
| 6956513 | Error feedback structure for delta-sigma modulators with improved stability An error feedback circuit includes a first summer receiving an analog input signal and a feedback signal and outputting a summed signal. A quantizer receives the summed signal and outputs a quantized output signal. A limiter receives the summed signal and outputs a ... | 10/18/2005 |
| 6943630 | Amplifier circuit, an optical communication system and a method of controlling amplification The invention concerns an amplifier circuit for receiving an optical signal. The circuit comprises a light sensitive member (301) which delivers an electric signal in response to an optical signal. Furthermore, the amplifier circuit comprises an amplifier uni... | 09/13/2005 |
| 6861898 | Loop filter and method for adjusting a compensating current of the same A loop filter and a method for adjusting its compensating current to make a control voltage of the loop filter more stable. The loop filter includes a charge/discharge path for receiving a control current and constituted by a first resister and a capacitor, a second... | 03/01/2005 |
| 6774714 | Semiconductor device provided with noise cut filter A functional circuit and a filter are disposed between a first power supply wire capable of being set in a first electric potential of a semiconductor device and a second power supply wire capable of being set in a second electric potential, which is different from ... | 08/10/2004 |
| 6696868 | Frequency to frequency de-randomizer circuit A frequency to frequency de-randomizer circuit having means for smoothing a current which comprises a diode filter configured so as to have a time constant which changes in response to changes in the current thus providing a rapidly responding, real time,... | 02/24/2004 |
| 6661281 | Method for reducing current surge using multi-stage ramp shunting A method reduces noise resulting from a current surge in a circuit. A plurality of loading elements, parallel with the circuit being protected, are connected sequentially and disconnected. The connection of the loading elements results in a ramping up of ... | 12/09/2003 |
| 6614294 | Filter to remove noise coupling into a sensitive circuit node A recurring noise filter for removing from a signal noise generated by parasitic coupling from a switching network. The filter contains an input filter, a sampling switch and an output filter. The input filter is a low pass filter which receives a signal ... | 09/02/2003 |
| 6597227 | System for providing electrostatic discharge protection for high-speed integrated circuits An ESD protection circuit uses an inductor to create an electromagnetic resonance in conjunction with the load capacitance of a conventional ESD device. By properly tuning the resonance of this combination, the protective properties of the ESD device can ... | 07/22/2003 |
| 6538499 | Low jitter transmitter architecture with post PLL filter A post PLL filter is coupled to the output terminal of a phase locked loop. The post PLL filter reduces the jitter of the PLL output clock signal by increasing the Q of the phase locked loop. In addition, some embodiments of the present invention also pro... | 03/25/2003 |
| 6535057 | Programmable glitch filter A glitch filter includes a storage element for storing a current state, which is the output of the filter. An output of the storage element is-connected to one input of a state comparator. Another input of the state comparator is connected to an input sig... | 03/18/2003 |
| 6529061 | Semiconductor device In a level-shift circuit of the high-side section of an HVIC, a switching-on level-shift resistance member includes two resistors, and a switching-off level-shift resistance member includes two resistors. A logic filter set fetches potentials of the both ... | 03/04/2003 |
| 6507799 | Method and apparatus for reducing microprocessor speed requirements in data acquisition applications A method and apparatus for improving microprocessor data acquisition. Noise in analog signals is removed by a low pass filter with a variable cutoff frequency controlled to cut off all frequencies above a frequency range of interest. The filtered signal i... | 01/14/2003 |
| 6459331 | Noise suppression circuit, ASIC, navigation apparatus communication circuit, and communication apparatus having the same A noise suppression circuit encompasses an internal circuit, a bypass capacitor, first and second transistors. The internal circuit has high and low level terminals, and the low level terminal is connected to a low level power supply line. The internal ci... | 10/01/2002 |
| 6437639 | Programmable RC filter A programmable resistive-capacitive filter circuit enabling on-chip digital control of the frequency response includes a switched resistive type voltage divider network where one of the resistors forms an element of an RC filter and wherein the voltage di... | 08/20/2002 |
| 6271706 | Divided voltage de-coupling structure The present invention provides an integrated circuit (I.C.) with a de-coupling circuit. The de-coupling circuit includes a voltage divider that includes first and second divider elements. The first and second divider elements are coupled to positive and n... | 08/07/2001 |
| 6256157 | Method and apparatus for removing noise spikes A method and apparatus is disclosed for reducing electrical noise from noise spikes in an electrical information signal. The invention can provide protection of a data storage system from soft errors rate due to noise spikes appearing in the signal from t... | 07/03/2001 |
| 6215347 | Undershoot/overshoot protecting circuit After an output signal is inverted by an inverter circuit, the resultant signal is differentiated by a differentiating circuit. The connecting states of selectors are changed so that only when the signal level of the differentiated output exceeds a predet... | 04/10/2001 |
| 6154090 | Method of and an active filter for reducing a residual ripple of a current drawn by a load from a network A method of reducing feedback action on a timely flow of current, which is drawn by a load from a network via rectifier, by active filtering of upper harmonics, which are superimposed on a network first harmonic, with a power factor corrector circuit with... | 11/28/2000 |
| 6144193 | Isolated transformer coupled gate drive for signals having variable duty cycle An improved coupling circuit for use in switched power supplies and other applications utilizes a DC restoration circuit following the secondary stage of a coupling transformer to maintain a relatively constant DC component in the coupled waveform, regard... | 11/07/2000 |
