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3M employee and church chorister Art Fry needed something to temporarily mark pages in his hymnal. He was in luck because his colleague, Spencer Silver, accidentally developed a glue that was too weak for other purposes. After initially discouraging consumer response, Post-it Notes became a hit in 1979.
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| Number | Title | Issue Date |
| 8130126 | Analog to digital conversion system The system converts an analog input signal into a digital output signal while avoiding interference, such as clipping. The system derives two signal components having differing signal magnitude levels from the analog input signal. The signal components are subjected... | 03/06/2012 |
| 8077065 | Data processing device and data processing system In AD conversion of a voltage under measurement, data continuity is ensured between the result of conversion after amplification by using an amplifier circuit and the result of direct conversion without using the amplifier circuit. In AD conversion operation using a... | 12/13/2011 |
| 8035541 | Digital-analog converter circuit, solid-state imaging device, and imaging apparatus A digital-analog converter circuit includes: a first digital-analog conversion part that obtains an analog output signal in response to a value of a digital input signal; and a second digital-analog conversion part that generates a control signal in response to a va... | 10/11/2011 |
| 8013767 | Analogue-to-digital converter (ADC) dynamic range and gain control The present invention relates to a method for using the peak-to-average power ratio (PAR) of signals received by a receiver to control the gain of the receiver for an analogue-to-digital converter (ADC) and/or to control the dynamic range of the ADC. ... | 09/06/2011 |
| 7978106 | Interference detection using a moving window A receiver including an automatic gain control module, a digital signal processor module, and a control module. The automatic gain control module has a gain that varies from a nominal value in response to the receiver receiving an input signal. The automatic gain co... | 07/12/2011 |
| 7965208 | Auto ranging system and method for analog signal Disclosed herein are embodiments of an auto ranging system and method for an analog signal. A microprocessor is configured to digitally control the programmable gains of an operational amplifier based on the digital output of an A/D converter which may reside on or ... | 06/21/2011 |
| 7952504 | Gain control method and electronic apparatus capable of gain control A gain control method is provided. In one embodiment, an amplifier amplifies a first signal according to a gain to obtain a second signal, and a converter converts the second signal to a digital signal. First, the gain is sequentially set to a plurality of gain valu... | 05/31/2011 |
| 7944383 | Data processing device comprising ADC unit A device (100) for processing data, the device (100) comprising a plurality of signal paths (130, 140, 150) each receiving an identical analog input signal (104), at least one signal conditioning unit (101 to 103) in at leas... | 05/17/2011 |
| 7944382 | Exponential digital to analog converter A system for generating a programmable exponential analog output signal, comprising a digital to analog conversion circuit for converting said digital signal into an analog output signal, the digital to analog conversion circuit having a substantially exponential tr... | 05/17/2011 |
| 7924189 | Method and apparatus for analogue to digital conversion An analogue to digital conversion unit (208, 210) comprises three analogue to digital converters (ADCs) (300, 301, 302) having different dynamic ranges. A lowest dynamic range ADC (300) and middle dynamic range ADC (301) have saturation d... | 04/12/2011 |
| 7924190 | Adjustble gain signal processing device A CLK generating section of a digital ALC generates a multiplication clock signal that is obtained by multiplying a triangular wave generated at a triangular wave generating circuit. On the basis of the multiplication clock signal, a signal converting section conver... | 04/12/2011 |
| 7884745 | Analogue to digital conversion An analog-to-digital conversion arrangement converting an input analog signal into an output digital representation. Two or more analog-to-digital conversion paths each applying a conversion mapping between input analog signal magnitudes and respective digital value... | 02/08/2011 |
| 7880652 | Adjusting a filter of a time-continuous sigma-delta converter This invention relates to adjusting a filter of a time-continuous Sigma-Delta converter arranged to convert an analog input signal (Sin) to a digital output signal. A control signal indicative of a gain of the filter is provided, and the gain of the filte... | 02/01/2011 |
| 7864091 | Interference detection using a moving window A system comprises a gain control module that selectively generates a gain locked signal based on a wireless input signal. A sync detect module that selectively generates a sync detect signal based on the wireless input signal. An interference detection module that ... | 01/04/2011 |
| 7808412 | Integrated circuit device and electronic instrument An integrated circuit device includes an amplifier circuit that receives an input signal and performs an offset adjustment corresponding to a DC offset of the input signal and a gain adjustment corresponding to an amplitude of the input signal, a filter that is prov... | 10/05/2010 |
| 7773014 | Strong short-pulse interference detection method A receiver module includes an automatic gain control module having a gain that varies from a nominal value in response to the receiver module receiving an input signal. The automatic gain control module is configured to generate a first signal in response to the gai... | 08/10/2010 |
| 7755523 | ADC use with multiple signal modes A signal is received and whether a signal mode of the signal is a first signal mode or a second signal mode is determined. A gain of a variable gain amplifier is adjusted to a first gain value if the signal mode of the signal is determined to be the first signal mod... | 07/13/2010 |
| 7701371 | Digital gain computation for automatic gain control Techniques for performing automatic gain control are described. In some aspects, the gain control is achieved with an apparatus having an analog-to-digital converter (ADC) and a digital variable gain amplifier (DVGA), the DVGA configured to receive a digital signal ... | 04/20/2010 |
| 7675443 | Saturation detector for an ADC A method for detecting saturation in a cascaded ΔΣ ADC can include receiving an output of the cascaded ΔΣ ADC, determining a magnitude of the output, and squaring the magnitude. The squared magnitude can be added to a feedback signal, wherein the sum represents ... | 03/09/2010 |
| 7656328 | Signal level conversion circuit for increasing dynamic range of analog-to-digital converter Disclosed herein is a signal level conversion circuit for increasing the dynamic range of an Analog-to-Digital Converter (ADC). A comparison and calculation unit compares the value of an input signal Vin and the value of a first reference signal Vref... | 02/02/2010 |
| 7656327 | Saturation detection for analog-to-digital converter This disclosure describes techniques for detecting or predicting saturation of an analog-to-digital converter. The techniques analyze digital samples following analog-to-digital conversion, and count occurrences of specific values associated with a subset of bits wi... | 02/02/2010 |
| 7623052 | Strong short-pulse interference detection method A system for detecting interference includes an automatic gain control (AGC) module, a peak detection module, and a control module. The AGC module selectively generates a gain-locked signal when an input signal is received. The peak detector module communicates with... | 11/24/2009 |
| 7605731 | Signal processor with a signal strength detection circuit that is coupled to a loop of an analog to digital converter A signal processing circuit has an analog to digital converter (31) for providing a digital signal to a processor (15) from an analog input signal that is susceptible to variations in signal power, e.g. from a radio front end (12). The device ha... | 10/20/2009 |
| 7583213 | Signal processing system capable of changing signal levels A signal processing system for changing a level of an input signal to generate an output signal is disclosed. The signal processing system includes a shifter, a sigma-delta modulator, and a level adjuster. The shifter is utilized for receiving the input signal and f... | 09/01/2009 |
| 7573410 | Gain step calibration in a mobile cellular transmitter A technique to utilize digital gain control to fine adjust gain for one or more analog gain steps of an analog circuit. A gain step calibration procedure is utilized to set the digital gain within acceptable limits established for the analog gain at a particular ope... | 08/11/2009 |
| 7557741 | Overload detection unit with signal strength indicator to indicate an overload condition A device is for digitally processing an input signal that is susceptible to variations in signal strength. The signal (48) is analog to digital converted into a bitstream signal (47), the bitstream signal representing the input signal by consecutive di... | 07/07/2009 |
| 7545299 | Analog front end device The invention discloses an analog front end device includes a calibration unit and at least a conversion circuit. The conversion circuit includes a clamper, a multiplexer, an voltage buffer and an analog to digital converter. The clamper receives an image signal and... | 06/09/2009 |
| 7541956 | Inverter system with variable input gain apparatus and method for the same An inverter system includes a comparator unit receiving an analog input voltage signal and compared with at least one threshold voltage value to determine a voltage range of the analog input voltage signal. An amplifier unit receives and amplifies the analog input v... | 06/02/2009 |
| 7525462 | Gain control for interleaved analog-to-digital conversion for electronic dispersion compensation Embodiments include a system for performing dispersion compensation on an electromagnetic signal received over a communication channel, the electromagnetic signal bearing information at a symbol rate. An interleaved analog to digital converter (“ADC”) block may ... | 04/28/2009 |
| 7504973 | Gain-variable analog/digital converter, gain adjustment method for gain-variable analog/digital converter, and system including gain-variable analog/digital converter Voltage values at a high-voltage side and a low-voltage side of a reference voltage are generated on the basis of a current outputted from a current source circuit having an adjustable current value, and an impedance element having an adjustable impedance value whic... | 03/17/2009 |
| 7504974 | Selecting circuit A selecting circuit having minimal signal distortion caused by non-linearity of semiconductor switching elements includes a plurality of circuit groups each comprising an input terminal (INa); serially connected resistors (R1a, R2a) havin... | 03/17/2009 |
| 7492295 | Self-adapting tracking analogue-to-digital converter and RF transmitter A self-adapting analogue-to-digital converter includes a forward path with a voltage divider coupled to a digital integrator. In a feedback path, a scaler is connected to a digital-to-analogue converter. A control unit provides control signals for the voltage divide... | 02/17/2009 |
| 7492296 | Discrete-time programmable-gain analog-to-digital converter (ADC) input circuit with input signal and common-mode current nulling A discrete-time programmable-gain analog-to-digital converter (ADC) input circuit with input signal and common-mode current nulling, provides a high input impedance level substantially independent of input capacitor size and input signal gain setting. An input volta... | 02/17/2009 |
| 7492294 | Receiving method with digital level adjustment in the analog section and incremental level change in the digital section In an analog receiving section of a receiving device, the level of a received signal is adjusted by a first correction factor corresponding to a first digital level correction signal. Following this, the level-adjusted received signal is converted into a digital rec... | 02/17/2009 |
| 7482958 | OFDM receiver The present invention provides an OFDM receiver having a level control section comprising comparators which respectively compare a first signal outputted from an ADC with threshold values, counters which respectively count the frequencies with which the level of the... | 01/27/2009 |
| 7446684 | Readout circuit for an image sensor and analog-to-digital converting method thereof A readout circuit is adapted for receiving a line analog image signal from an image sensor array of an image sensor. The readout circuit includes an amplifying unit, an m-bit analog-to-digital converter, and an m-to-n bit digital converting unit. The amplifying unit... | 11/04/2008 |
| 7436334 | Amplifier, analogue to digital converter, methods of amplifying and of converting an analogue input signal to a digital output signal and of producing a mineral hydrocarbon fluid Amplifier comprising an input signal node for conveying an input signal having an input signal value and an output signal node for conveying an output signal having an output signal value. Amplifier circuitry is coupled to the input signal node and provided with a p... | 10/14/2008 |
| 7429943 | Analog to digital (A/D) conversion circuit have a low dynamic range A/D converter A low-power, high-dynamic range, analog-to-digital (A/D) conversion circuit for converting an analog signal to a digital signal having a controllable amplifier for amplifying the analog log signal received at an input of the amplifier in response to a first control ... | 09/30/2008 |
| 7423570 | DA converter, AD converter, and semiconductor device A DA converter includes a first DA conversion section for obtaining an analog output signal in accordance with a digital input signal value, and a second DA conversion section for obtaining an analog gain control output signal in accordance with a digital gain contr... | 09/09/2008 |
| 7408489 | Method and system for mixed analog-digital automatic gain control Aspects of the invention provide a method and system for a mixed analog-digital automatic gain control. The received analog signal is amplified by the analog amplifier and then converted to a digital value by an ADC. A clamp reference level of the converted signal i... | 08/05/2008 |
