Did You Know...
...that while attempting to develop a super strong glue, 3M employee Spencer Silver accidentally developed a glue that was so weak it would barely hold two pieces of paper together? However, his colleague Art Fry needed the glue. Fry sang with his church choir and marked the pages of his hymnal with small scraps of paper that often fell out. He used Silver's glue to hold the papers in place. Today we call this invention Post-it Notes.
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| Number | Title | Issue Date |
| 8138802 | Symmetrical electrical physical layer activity detector A low-current differential signal activity detector circuit may be configured to reject large common mode signals on differential input lines, while still detecting smaller differential signals applied to the same set of differential input lines. The detector circui... | 03/20/2012 |
| 8063667 | Peak hold circuit A peak hold circuit includes an input transistor, which is provided with an input signal, and a first hold capacitor, which holds a maximum or minimum value of the input signal. A correction circuit, which corrects the hold voltage held by the first hold capacitor, ... | 11/22/2011 |
| 8044686 | Comparator circuit for generating binarized data A comparator circuit according to an embodiment of the present invention includes a comparator configured to compare an input signal voltage with a reference voltage obtained by smoothing the input signal by use of a resistor and a capacitor, and output a result of ... | 10/25/2011 |
| 7990182 | Electrical physical layer activity detector A low-current differential signal activity detector circuit may be configured to reject large common mode signals on differential input lines, while still detecting smaller differential signals applied to the same set of differential input lines. The detector circui... | 08/02/2011 |
| 7973568 | System for providing large RC time constants in integrated circuits A peak detector for implementation in a monolithic integrated circuit includes one or more Miller capacitors and one or more transistors for selectively setting large RC time constant values only with components included in the integrated circuit's die. Neither resi... | 07/05/2011 |
| 7944246 | Signal detecting circuit A full-wave rectifier circuit receives complementary signals and produces a current corresponding to an added value of differential signals at different levels. A voltage comparator performs a comparison between output signals produced and subjected to current addit... | 05/17/2011 |
| 7911236 | Detection circuit and detection method A detection circuit includes a bias circuit configured to generate a first bias voltage and a second bias voltage. The detection circuit further includes a storage device configured to store a detection value corresponding to an amplitude of a radio frequency signal... | 03/22/2011 |
| 7898300 | Peak detector A peak detector capable of rapidly detecting a peak value of a signal is provided. The peak detector includes first and second operational amplifiers and an auxiliary current source to detect two rail to rail signals. The first operational amplifier outputs a detect... | 03/01/2011 |
| 7880508 | Device for detecting the peak value of a signal A device for detecting the peak value of a signal with crest factor not known a priori includes a pair of peak detectors, each of which includes a rectifier element and a discharge-current generator and generates a respective output signal that is a function of the ... | 02/01/2011 |
| 7880509 | Wired signal receiving apparatus A wired signal receiving apparatus including a signal receiver, a signal peak detector, and a signal comparator is disclosed. The signal receiver includes an operation current detecting circuit for detecting an operation current. The signal receiver further receives... | 02/01/2011 |
| 7863939 | Signal detecting apparatus, signal receiving apparatus, and signal detecting method A signal detecting apparatus detects a signal received based on a current received and includes a detecting unit that detects, in the current received, a peak equal to or higher than a threshold and a time counting unit that counts a given period of time from a poin... | 01/04/2011 |
| 7839182 | Detector of noise peaks in the power supply of an integrated circuit A circuit for detecting noise peaks on the power supply of an electronic circuit, including at least a first transistor having its control terminal connected to a terminal of application of a first potential of a supply voltage of the circuit and having a first cond... | 11/23/2010 |
| 7737731 | High data rate envelope detector for high speed optical storage application To detect the peaks level of an incoming signal, the difference between the voltage level of the incoming signal and a voltage developed across a capacitor is amplified. The amplified difference signal is applied to a transconductor adapted to vary its output curren... | 06/15/2010 |
| 7701259 | Method and system for wide range amplitude detection Aspects of a method and system for wide range amplitude detection are provided. In this regard, many electronic systems may require amplitude detection of a variety of signals with widely varying amplitudes. Aspects of the invention may comprise suitable logic, circ... | 04/20/2010 |
| 7683676 | Signal-level detecting apparatus, optical receiver, and signal-level detecting method An amplifying unit performs a differential amplification with a highest level or a lowest level of an input signal and a previous input signal. A semiconductor element transfers a signal level output from the amplifying unit from a second terminal to a third termina... | 03/23/2010 |
| 7679407 | Method and apparatus for providing peak detection circuitry for data communication systems Method and apparatus for providing a peak detection circuit comprising a diode including an input terminal and an output terminal the input terminal of the diode configured to receive an input signal, a capacitor operatively coupled to the output terminal of the dio... | 03/16/2010 |
| 7598776 | Programming circuit with feedback circuit An exemplary programming circuit (40) includes an input terminal (42) configured for receiving an external high voltage signal, a driving circuit (20), a switch circuit (43) connected between the input terminal and the driving circuit, an... | 10/06/2009 |
| 7560958 | Low power comparator with fast propagation delay A direct relationship exists between an integrated comparator's propagation delay and the input differential pair's bias current and overdrive voltage. A new method using a pulsed bias scheme for the input differential pair improves propagation delay by more than on... | 07/14/2009 |
| 7535262 | High voltage level shifting by capacitive coupling A circuit configuration which includes an input circuit referenced to one ground voltage and an output circuit referenced to another ground voltage capacitively coupled to the input circuit. ... | 05/19/2009 |
| 7535263 | Comparator feedback peak detector There is disclosed a circuit and a process for detecting peak-to-peak voltage. The circuit comprises a first comparator having an output coupled to a first capacitor, a non-inverting input for receiving a high frequency AC waveform, and an inverting input, a second ... | 05/19/2009 |
| 7525347 | Differential peak detector Differential peak detection for outputting a signal indicative of a peak value of an input signal. The input signal is differentially amplified using common mode feedback and a common mode output is thereby output, wherein common mode level of the common mode output... | 04/28/2009 |
| 7474128 | Transient voltage detecting circuit for electronic system having multiple of power supplies The invention provides a transient voltage detecting circuit for detecting changes of voltage in an electronic system which has a first power supply (VDD), a second power supply (VDD), a third power supply (VDD), a fourth power supply (VDD), a first ground (GND), an... | 01/06/2009 |
| 7471118 | Squelch detection system for high speed data links An apparatus comprising a first comparator circuit, a second comparator circuit, a third comparator circuit, and a difference circuit. The first comparator circuit may be configured to generate a first intermediate current in response to a first input voltage and a ... | 12/30/2008 |
| 7439776 | Technique to increase the speed of a peak detector A peak detector can advantageously increase its bandwidth, i.e. its charging and discharging speed, while minimizing the ripple of its output signal by sensing the charging current of a storage device. In response to that charging current, the peak detector can cont... | 10/21/2008 |
| 7394295 | Sense amplifier The invention relates to a sense amplifier comprising the following element: a first current mirror unit coupled to a high voltage source, outputting a first current and a second current according to a first reference current, wherein the second current is twice the... | 07/01/2008 |
| 7382166 | Signal amplification device A signal amplification device which uses inexpensive standard CMOS and yet is capable of high-accuracy threshold setting. An offset voltage generator detects the direct-current level of an input signal, and generates a positive or negative offset voltage signal. A p... | 06/03/2008 |
| 7375578 | Radio frequency envelope detector An RF envelope detection circuit that operations at low currents, high sensitivity, and high dynamic range. The circuit receives an AC signal at its input terminal and applies a signal on its output terminal that is a function of the envelope magnitude of the AC sig... | 05/20/2008 |
| 7369625 | Apparatus and method for slicing RF signal and compensating for the slice level of RF signal in disk drive An apparatus and method for slicing an RF signal and compensating for the slice level of an RF signal reproduced from a disk, which minimizes a block error rate by optimizing the slice level of the RF signal according to variations in symmetry of the RF signal when ... | 05/06/2008 |
| 7368956 | Data slicer with a source-degeneration structure A data slicer with a source-degeneration structure is described. In particular, this invention can be implemented in a FM demodulation system. It located at the end of the demodulator. The data slicer can slice a signal transmitted through air and demodulates the sa... | 05/06/2008 |
| 7366224 | System and method for the detection of presence of a signal and its synchronization, for a frequency hopping system working in a disturbed environment A method and device are disclosed for the detection and synchronization of a signal in a frequency-hopping system. The method has a step, for each frequency F(1) . . . F(M), of selecting the K samples corresponding to the greatest values of the signal, and th... | 04/29/2008 |
| 7355456 | Wide linear range peak detector A wide linear range peak detector including first and second peak detectors and a compensation circuit. The first peak detector receives an input signal and has an output providing a first peak signal approximation which approximates a peak level of the input signal... | 04/08/2008 |
| 7352231 | Method and circuit for perturbing removable singularities in coupled translinear loops A translinear network (34) has first (Q1, Q2, Q3, Q4) and second (Q4, Q3, Q5, Q6) translinear loops. A Trafton-Hastings clamp circuit (36) is connected to generate ... | 04/01/2008 |
| 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 |
| 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 |
| 7336067 | Sensor assembly, sealing device, and roller bearing apparatus for vehicles having integrated connector and ring Balls are interposed between respective raceway surfaces of inner and outer ring members, and a seal apparatus is provided between shoulder portions of the inner and outer ring members. The seal apparatus comprises an outer ring-side seal ring fixed to the outer rin... | 02/26/2008 |
| 7328690 | Apparatus and method for accurate detection of locomotive fuel injection pump solenoid closure The invention relates to a system and method for detecting a closing of a solenoid. The system includes a capacitive charge circuit electrically coupled to the solenoid. The capacitive charge circuit conditions the current flow through the solenoid to increase the c... | 02/12/2008 |
| 7319770 | Method of processing an acoustic signal, and a hearing instrument A method of processing an acoustic input signal into an output signal in a hearing instrument includes converting the acoustic input signal into a converted input signal, and applying a gain to the converted input signal to obtain the output signal. According to the... | 01/15/2008 |
| 7301330 | Electronic sensing circuit that compensates for reference voltage drift A sensor (10) has an output coupled to a first comparator input. A control circuit (18) is arranged to switch from an upward tracking mode to a downward relative level detection mode, to a downward tracking mode, to an upward relative level detection m... | 11/27/2007 |
| 7302055 | Discharging envelope detector A receiver to detect pulses on a home phone wiring network using envelope detection. The receiver comprises an integrating capacitor charged by a first current source responsive to a differential signal propagated on the wiring network, and discharged by a FET in co... | 11/27/2007 |
| 7285948 | Method and apparatus providing single cable bi-directional triggering between instruments System and apparatus enabling the use of a single cable to communicate triggering information between each of a plurality of signal acquisition devices and, illustratively, an external trigger control unit. A combined tripper signal is produced only when each trippe... | 10/23/2007 |
