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 |
| 7787851 | Circuit arrangement with radio-frequency mixer, and receiver arrangement with the circuit arrangement The invention specifies a circuit arrangement with a radio-frequency mixer (4) in which a plurality of preamplifiers (1, 2, 3) in a receiver have a common output node (6). This node is connected to a common, broadband radio-frequency mixer (4... | 08/31/2010 |
| 7444126 | Signal-to-noise optimized fully monolithic video receiver IF channel In a video IF channel the gain of the circuit is achieved ahead of the IF filter and the output of the filter, including its noise, need only be amplified a relatively small amount, thus preserving an acceptable signal to noise ratio. In one embodiment, a variable g... | 10/28/2008 |
| 7440738 | Automatic gain control with two power detectors A receiver (100) adjusts its overall gain based on the detected power level of an incoming signal. The receiver is built with two detectors (D1, D2) which operate with different detecting ranges within the dynamic range of the incoming signal. I... | 10/21/2008 |
| 7415066 | Mis-matched modulation-demodulation format selectable filters Modulation-demodulation format selectable (MFS) processor, cross-correlator and transmit filter for processing, cross-correlating and filtering in-phase and quadrature-phase baseband signal and providing a first bit rate and a second bit rate baseband signal to a mo... | 08/19/2008 |
| 7353010 | Techniques for fast automatic gain control An automatic gain control (AGC) technique can quickly sense signal size over a large dynamic range by using a peak detector block in the analog portion of the receiver. The peak detector block can compare a received signal to predetermined thresholds (chosen to divi... | 04/01/2008 |
| 7348846 | Amplifier arrangement The present invention relates to an amplifier arrangement having a plurality of amplifier stages that form a series circuit. Each amplifier stage comprises a current mirror, the translation ratio of which defines the gain of the amplifier stage. Moreover, a current ... | 03/25/2008 |
| 7313378 | Tracking automatic gain control An automatic gain control provides for enhanced acquisition and tracking of wireless signals. The wireless signals may include signals using electrostatic fields, magnetic fields, or electromagnetic fields. In an embodiment, wireless signals are provided as radio fr... | 12/25/2007 |
| 7269401 | Signal processing circuit for tuner which applies signal processing based on variation in frequency of intermediate frequency signal A signal processing circuit for a tuner has a detector band pass filter for extracting a carrier of an intermediate frequency signal, a frequency counter for counting, based on a clock signal, a frequency of a carrier of the intermediate frequency signal which passe... | 09/11/2007 |
| 7260375 | Frequency agile RF circuit A frequency agile sequential amplifier circuit that includes first and second RF amplifiers coupled by a SAW delay line, a double balanced mixer coupling the first RF amplifier to the SAW delay line, the output of the first RF amplifier providing a signal as a first... | 08/21/2007 |
| 7257383 | Method and system for improving dynamic range for communication systems using upstream analog information The receiver is provided which comprises a mixer, a low pass filter coupled to the mixer and a plurality of gain controllers serially coupled to an output of the low pass filter (LPF). A plurality of analog-to-digital converters (ADCs) is coupled so that an input of... | 08/14/2007 |
| 7257381 | Self-tuned millimeter wave RF transceiver module A self-tuned millimeter wave transceiver module includes a microwave monolithic integrated circuit (MMIC) having at least one amplifier. A controller is operatively connected to the MMIC for sensing amplifier operating conditions and tuning the at least one amplifie... | 08/14/2007 |
| 7257385 | Wireless communication semiconductor integrated circuit device and wireless communication system A receiving circuit of a direct conversion system is provided which includes a differential amplifier circuit which amplifies a received signal, a mixer which combines the amplified received signal and an oscillation signal having a predetermined frequency to thereb... | 08/14/2007 |
| 7248846 | Feedforward amplifier and radio communication apparatus with the amplifier An amplifier comprises a first amplifier circuit which amplifies a first signal to output an amplified first signal, a circuit which outputs a second signal corresponding to a difference between the first signal and the amplified first signal, a second amplifier cir... | 07/24/2007 |
| 7245884 | RF module An RF module includes a multi-layered substrate. A base-band IC, a memory IC, a quartz oscillator and surface-mount components are mounted on the upper surface of the multi-layered substrate. A metallic cap also is attached to the upper surface of the multi-layered ... | 07/17/2007 |
| 7231195 | Variable gain control circuit and receiver apparatus using the circuit Disclosed is a variable gain control circuit for executing automatic-gain-control on a variable gain amplification block composed of a plurality of amplifiers on which discrete gain setting is executed by a programmable-gain-amp method. A baseband amplifier (a varia... | 06/12/2007 |
| 7221919 | Receiver circuit and radio communication terminal apparatus There are provided, as a low noise amplifier (70) a low noise amplifier (71) with a low gain and a low noise amplifier (72) with a high gain, selectively operable under control of a bias current, and an output from the low noise amplifier (72... | 05/22/2007 |
| 7215937 | Radio wave reception device, radio wave clock, and repeater A received low-frequency standard radio wave, which is an amplitude modulation signal, is converted to an intermediate frequency signal Sa, and is output to a detection circuit and an AGC circuit. The detection circuit and AGC circuit generates an RF control signal ... | 05/08/2007 |
| 7202735 | Multi-band power amplifier module for wireless communication devices A multi-band power amplifier module includes a first power amplifier that amplifies a first input radio frequency signal in a first frequency band in response to a first bias control signal. A second power amplifier amplifies a second input radio frequency signal in... | 04/10/2007 |
| 7200370 | Power amplifier having enhanced swing cascode architecture A Radio Frequency (RF) power amplifier includes a transconductance stage, an AC coupling element, and a cascode stage. The transconductance stage is adapted to receive an input RF voltage signal and to produce an output RF current signal. The cascode stage is adapte... | 04/03/2007 |
| 7154335 | Variable gain amplifier with direct current offset correction Techniques to provide DC-offset correction in a variable gain amplifier are described. ... | 12/26/2006 |
| 7149484 | Portable communication device having adjustable amplification and method therefor Briefly, in accordance with one embodiment of the invention, a portable communication device comprises an amplifier having an input signal and an output signal. The amplitude of the input signal may be compared to the amplitude of the output signal and an appropriat... | 12/12/2006 |
| 7133655 | Amplifiers and amplifying methods for use in telecommunications devices A signal strength indicator circuit that includes a first amplifier configured to receive a first input signal from a first mixer and a second input signal from a second mixer;. The circuit also includes a second amplifier configured to receive a first set of differ... | 11/07/2006 |
| 7116955 | Dual loop automatic gain control An AGC circuit includes both wide-band and narrow-band VGAs. Two power monitors monitor the power level of the two VGAs. Based upon the signals provided by the power monitors, the AGC circuit derives two error terms. The AGC circuit filters and combines the error te... | 10/03/2006 |
| 7113758 | Automatic gain controller Disclosed is an automatic gain controller capable of reducing signal saturation or signal distortion caused by out-of-band signals of a filter extracting an object signal or delay of a control signal and capable of precisely measuring a signal level in a filter band... | 09/26/2006 |
| 7110735 | Automatic gain control system An example automatic gain control (AGC) system in which an adder adds a radio frequency (RF) signal power of only the low-frequency component of an RF signal and an intermediate-frequency (IF) signal of an output from a variable-gain intermediate-frequency amplifier... | 09/19/2006 |
| 7107074 | Computer system with wireless audio signal transmitter module A computer system provides a wireless audio signal transmitter module which is capable of transmitting audio signal wirelessly from a host computer to at least one remote wireless signal receiver. The wireless audio signal transmitter module is connected to a sound ... | 09/12/2006 |
| 7103335 | Receiver used in spread spectrum communication system In a receiver used in the spread spectrum communication system, power of a base band signal which is obtained by A/D converting an output of a quadrature demodulator is detected by a base band signal power-detecting unit, where the quadrature demodulator demodulates... | 09/05/2006 |
| 7088975 | Automatic gain control system and method using multiple local AGC loops A receiver comprises a first Variable Gain Amplifier (VGA) that amplifies an input signal in accordance with a first gain to produce a first amplified signal. The first gain is controlled based on the first amplified signal. The receiver includes a second VGA that p... | 08/08/2006 |
| 7085587 | Signal processing semiconductor integrated circuit device and wireless communication system Disclosed herein is a direct conversion type signal processing semiconductor integrated circuit device capable of suppressing a DC voltage variation in the output of a variable gain amplifier upon the transition to a reception mode, reproducing stable receiving char... | 08/01/2006 |
| 7076228 | Interference reduction for multiple signals The present invention reduces the degradation in performance of one or more radio signals that are co-transmitted with a first radio signal from the same transmitting antenna in the same frequency channel and received by the same antenna due to multipath or other sh... | 07/11/2006 |
| 7050779 | Semiconductor integrated circuit device The thermal interference due to the self heating of transistors constituting a gilbert cell circuit is reduced, thereby largely improving the receiving sensitivity to signals. A mixer circuit composed of a gilbert cell circuit comprises transistors T1 to T... | 05/23/2006 |
| 7031691 | Low-noise amplifier circuit and a method for amplifying low-power signals in a low-noise manner The invention relates to a low-noise amplifier circuit and a method for amplifying low-power signals in a low-noise manner. Said signals are supplied to the inputs of several amplifiers (20 . . . 29) which are arranged in parallel. The output signals of said ... | 04/18/2006 |
| 7027789 | Self-tuned millimeter wave RF transceiver module A self-tuned millimeter wave transceiver module includes a microwave monolithic integrated circuit (MMIC) having at least one amplifier. A controller is operatively connected to the MMIC for sensing amplifier operating conditions and tuning the at least one amplifie... | 04/11/2006 |
| 7010284 | Wireless communications device including power detector circuit coupled to sample signal at interior node of amplifier A multi-stage amplifier is coupled with a power detector. The multi-stage amplifier includes a plurality of amplifier stages in series, with a signal path extending through them. The power detector is coupled to an interior node of the amplifier along the signal pat... | 03/07/2006 |
| 6963733 | Method and apparatus for reducing the effect of AGC switching transients The present invention reduces automatic gain control (AGC) transients using first and second AGC processing branches to receive a signal. A gain is selectively adjusted (if desired) in the one of the AGC processing branches during a first time period. However, a gai... | 11/08/2005 |
| 6954624 | Transmitter and wireless communication device having a low power bypass branch A transmitter into which a modulated signal (TX) is fed, the transmitter comprising an adjustable amplifier (1) for adjusting transmission power level, the modulated signal (TX) being fed into to the input of the amplifier (1), an amplification branch ... | 10/11/2005 |
| 6954623 | Load variation tolerant radio frequency (RF) amplifier A power amplifier having a phase shift and impedance transformation element is disclosed. The power amplifier comprises a plurality of amplification paths, a first phase shift element at an input of each amplification path and a second phase shift element at an outp... | 10/11/2005 |
| 6941978 | Vapor recovery system with ORVR compensation A fuel dispenser with a booted nozzle for vapor recovery is modified to include check valves in a vapor return path. The check valves selectively allow atmospheric air into the vapor return path to alleviate nuisance shut offs at the nozzle when an ORVR vehicle is b... | 09/13/2005 |
| 6923221 | Vapor recovery system with ORVR compensation A fuel dispenser with a booted nozzle for vapor recovery is modified to include check valves in a vapor return path. The check valves selectively allow atmospheric air into the vapor return path to alleviate nuisance shut offs at the nozzle when ORVR vehicle is bein... | 08/02/2005 |
| 6785524 | Device and method for controlling the amplitude of signals A device for ensuring that the amplitude of signals fall within a predetermined range, said device comprising input means for receiving a plurality of input signals at substantially the same time, a first path for increasing the amplitude of any of the input signals... | 08/31/2004 |
