Did You Know...
...that the Slinky toy was the result of a failed attempt by engineer Richard James to produce an antivibration device for ship instruments? His goal was to develop a spring that would instantaneously counterbalance the wave motion that rocks a ship at sea. Instead, he developed the Slinky.
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| Number | Title | Issue Date |
| 7405613 | Differential slope demodulator for low-IF frequencies A circuit and method for differential slope demodulator circuit are shown that utilize amplitude stabilizing of a frequency modulated signal to obtain an amplitude stabilized signal. Also shown is bandpass filtering of the amplitude stabilized signal for a first fre... | 07/29/2008 |
| 7292092 | Tunable poly-phase filter and method for calibration thereof A resonator circuit is shown that is fabricated with substantially identical elements disposed symmetrically along an axis such that the circuit has a linear response to bias current. The alignment of the circuit permits multiple characteristics of the circuit to be... | 11/06/2007 |
| 7212068 | Tunable Sallen-Key filter stage and filter assembly Disclosed is a filter circuit assembly that includes a filter stage with a variable resistor and a resistor/capacitor (RC) oscillator. A controlling output of the RC oscillator controls the value of the variable resistor. The RC oscillator itself also includes a var... | 05/01/2007 |
| 7190933 | Method and apparatus for automatic tuning of a resonant loop antenna in a transceiver circuit Disclosed is a circuit and method for automatic tuning of a resonant circuit in a transceiver having a receiver and a transmitter that includes a power amplifier for driving the resonant circuit. During a transmit mode of the transceiver, a resonance voltage of the ... | 03/13/2007 |
| 7164377 | Multiplexed voltage reference strategy for codec A shared voltage reference circuit for a codec is shown that includes a voltage reference circuit for producing a reference voltage. A first sample and hold circuit has a first capacitor coupled to an output of the voltage reference circuit through a first switch co... | 01/16/2007 |
| 7164310 | Systems and apparatus for digital control of bias for transistors The present invention is directed toward a system and apparatus for digitally controlling a bias control signal for at least one transistor. The present invention provides for software writable registers that control the bias control signal. The present invention fu... | 01/16/2007 |
| 7091713 | Method and circuit for generating a higher order compensated bandgap voltage A method and circuit are shown for generating a higher order compensated bandgap voltage is disclosed, in which a first order compensated bandgap voltage and a linearly temperature dependent voltage are generated. Thereafter, a difference between the linearly temper... | 08/15/2006 |
| 7058372 | Method and apparatus for automatic tuning of a resonant loop antenna Disclosed is a circuit and method for continuous automatic tuning of a resonant circuit. A resonance voltage of the resonant circuit is phase shifted by a predetermined phase shift Φ degrees and an input voltage signal to a power amplifier driving the resonant circ... | 06/06/2006 |
| 7031458 | Method and apparatus for isolation in a data access arrangement using analog encoded pulse signaling The present invention is directed toward a method and apparatus for transferring data across an isolation barrier using high speed analog encoded signals. A line side circuit interfaces with tip and ring contacts on one side of a capacitive isolation barrier that is... | 04/18/2006 |
| 6753586 | Distributed photodiode structure having majority dopant gradient and method for making same A distributed photodiode structure is shown formed on a semiconductor substrate having a first dopant type where a first plurality of diffusions of a second dopant type are formed on a first surface of the substrate. A second plurality of diffusions having the first... | 06/22/2004 |
| 6359517 | Photodiode transimpedance circuit Disclosed is a front end circuit involving a transimpedance amplifier that drives a resistor, thereby lowering the input impedance of the circuit by dividing the feedback resistance by the gain of the amplifier. In the front end circuit of the present inv... | 03/19/2002 |
