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"During my service in the United States Congress, I took the initiative in creating the Internet."
Al Gore ; The basis for the later misquote by US Republicans that Gore had "invented" the Internet. Gore was the leading political champion of the modern-day Internet.
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| Number | Title | Issue Date |
| 7346326 | Mobile communication terminal with equalizer function Disclosed is a mobile communication terminal which is provided with an equalizer function of audio equipment to adjust a timbre of transmitting/received speech sounds so as to satisfy a great number of users having various individualities and tastes simultaneously. ... | 03/18/2008 |
| 7330523 | Estimating frequency offset Frequency offset estimation apparatus for estimating the offset from a predetermined centre frequency of an input signal carrying a plurality of frequency shifted symbols, the apparatus comprising: a demodulator for demodulating the input signal to estimate the symb... | 02/12/2008 |
| 7277690 | Communication apparatus including a mechanism for preventing demodulation of text telephone information during poor signal reception A communication apparatus includes a mechanism for preventing demodulation of text telephone information during reception of a poor quality signal. In one embodiment, the communication apparatus includes a receiver including a demodulator unit configured to receive ... | 10/02/2007 |
| 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 |
| 7164897 | Method and apparatus for conversion of radio frequency (RF) signals using aperiodic mixing signals An inexpensive, high-performance, fully-integrable, multi-standard transceiver with a topology including: an active mixer, followed by a high pass filter, and a passive mixer. The input signal is modulated up, or demodulated down, using a pair of complementary, aper... | 01/16/2007 |
| 7158586 | Systems and methods to provide wideband magnitude and phase imbalance calibration and compensation in quadrature receivers Systems and methods for passively calibrating and correcting for I/Q mismatch in a quadrature receiver without the necessity of modifying the analog portion of the receiver by adding calibration signals or correction circuitry are presented. The passive I/Q mismatch... | 01/02/2007 |
| 7142836 | Microwave filter distributed on circuit board of wireless communication product The present invention is to provide a microwave filter distributed on a circuit board of a wireless communication product, which comprises an input terminal, a resonant chamber of double frequencies, and an output terminal of the microwave filter directly distribute... | 11/28/2006 |
| 7016661 | Multi-mode receiver for frequency error mitigation The present invention provides a multimode receiver design for mitigation of frequency offset by selective demodulation of an input modulated signal. The receiver (103) comprises a plurality of demodulators (207). Each of the plurality of demodulators ... | 03/21/2006 |
| 6937871 | Anti-demodulator circuit, filtering device and demodulator circuit The invention relates to an anti-demodulator circuit which is fundamentally built up in the same way as a demodulator circuit but, instead of a bandpass filter as generally used in a demodulator, comprises a notch filter which receives an input signal comprising a u... | 08/30/2005 |
| 6882861 | Wireless user terminal and system having signal clipping circuit for switched capacitor sigma delta analog to digital converters A wireless user terminal (42) and system (40) implementing a mixed signal CODEC (100) including an improved sigma-delta ADC (18) which limits input signals into a switched capacitor configuration and avoids adding circuit overhead in the ... | 04/19/2005 |
| 6859238 | Scaling adjustment to enhance stereo separation A demodulator (10) converts television signals to video baseband signals and audio baseband signals including stereo signals representing a right channel signal value and a left channel signal value. A DSP (60) recursively finds a preferred coefficient... | 02/22/2005 |
| 6826392 | Multipath noise reduction method, multipath noise reducer, and FM receiver A multipath noise reducer extracts a high-frequency signal from a demodulated signal obtained from a frequency-modulated signal, and generates a noise reduction coefficient from the extracted high-frequency signal. The demodulated signal is also separated into high-... | 11/30/2004 |
| 6754480 | Baseband analog circuit with improved noise characteristics A baseband analog circuit includes a demodulator to demodulate a received signal and to output a baseband analog signal, a low-pass filter to filter the demodulated baseband analog signal, and an impedance converter, provided between the demodulator and the low-pass... | 06/22/2004 |
| 6636731 | Demodulation method preserving a high spectral purity The invention relates to a method of demodulating a signal (I, Q) that has a main component and harmonics. According to the invetion, this method includes the following of a selection of one of the harmonics, and a demodulation of the selected harmonic. T... | 10/21/2003 |
| 6006082 | FM demodulating device using an extended kalman filter This invention provides an FM demodulating device for robustly demodulating a received FM signal even under a jammed communication condition through the use of an improved extended Kalman filtering scheme, which is applied to the FM communication system e... | 12/21/1999 |
| 5881364 | Radio pager having correcting circuit responsive to temperature variation In a radio pager capable of receiving a paging signal subjected to multilevel digital frequency modulation, an analog-to-digital converter (ADC) receives a demodulated voltage signal in the form of an analog signal from a demodulator. The ADC functions to... | 03/09/1999 |
| 5710996 | Adaptive noise canceling system and FM radio communication receiver using said system An adaptive noise canceling system for improving a S/N ratio and clarity of a output signal includes a delay for delaying the input signal X(j) by a fixed time delay a, a filter for filtering the delayed signal D(j), a subtracter for subtracting the filte... | 01/20/1998 |
| 5680418 | Removing low frequency interference in a digital FM receiver In a digital FM receiver having a demodulator that receives a radio signal and generates therefrom a phase sample whose behavior determines an output of the demodulator, an apparatus for removing a low-frequency interference signal from the phase sample c... | 10/21/1997 |
| 5564091 | Method and apparatus for operating an automatic frequency control in a radio A method and apparatus for determining received signal strength of a radio frequency signal of a frequency dependent device to determine errors in automatic frequency control calculations. The method includes the steps of: 1 ) receiving the radio frequenc... | 10/08/1996 |
| 5499399 | Two-dimensional kernel adaptive interference suppression system A two-dimensional interference suppression system utilizes adaptive locally optimum detection algorithms derived from kernel estimation. By using these algorithms in the process of the invention, fewer receive samples are required to obtain useful estimat... | 03/12/1996 |
| 5438691 | Receiver using a plurality of amplifiers and analog-to-digital converters for demodulating and decoding a signal In a receiver, a plurality of amplifiers each having a particular amplification factor amplifies a received signal. Analog-to-digital converters (ADCs) each converts the output of the respective amplifier to a digital value. The resulting digital values f... | 08/01/1995 |
| 5052050 | Direct conversion FM receiver A direct conversion receiver for demodulating an FM signal converted frequency down converts the signal to quadrature related baseband signals (I,Q). These signals are applied by way of respective d.c. blocking capacitors (16, 18) and differentiating circ... | 09/24/1991 |
| 4926499 | Carrier phase controller for a receiver of phase modulated signals A simplified carrier phase control apparatus used in a modem for demodulating a quadrature amplitude modulated data signal, to correct phase jitters of a carrier signal due to a 50 Hz or a 60 Hz frequency of the commercial power supply, and its harmonic w... | 05/15/1990 |
| 4866261 | Data limiter having current controlled response time A data limiter in a paging receiver for converting an analog signal to a digital signal, the data limiter having a variable time constant. The data limiter includes an amplifying circuit and an integrating circuit. The amplifying circuit, being responsive... | 09/12/1989 |
| 4814718 | Microwave discriminator and demodulator/receiver using the same A microwave frequency discriminator, i.e. an electronic device for directly transforming frequency modulation on a microwave carrier into a demodulated lower frequency signal. The discriminator is similar to a Travis discriminator and includes an inlet mi... | 03/21/1989 |
| 4742570 | Multipath noise detecting circuit A multipath noise detecting circuit, which is not affected by ignition noise nor by the level of the antenna input voltage, includes a band pass filter having a mean frequency of 114 KH supplied with signals output from a FM demodulator, an AM detector fo... | 05/03/1988 |
| 4622520 | FM demodulator with impulse noise elimination circuit An apparatus for demodulating a frequency modulated input signal having a carrier signal component, including a filter for allowing only signals having frequency around the frequency of the carrier signal component and a demodulator connected to the filte... | 11/11/1986 |
| 4553102 | Multilevel amplitude modulation demodulator with DC drift compensation Multilevel baseband signals are applied to a full-wave rectifying section which produces first and second outputs. These outputs are applied to an analog-to-digital converting means which produces a plurality of recovered binary digital signals and an err... | 11/12/1985 |
| 4479250 | Dual audio capture limiter squelch circuit A communications receiver squelch circuit for use in frequency modulation systems which has tight squelch sensitivity. The squelch circuit includes two audio limiters and provides improved squelch sensitivity and squelch action that is independent of carr... | 10/23/1984 |
| 4329714 | Audio distortion eliminator An audio distortion elimination circuit is provided which eliminates the effects of periodic decreases in signal amplitude of an audio signal. A comb filter includes an undelayed signal path, a signal path including a delay line and a combining circuit co... | 05/11/1982 |
| 4271535 | Noise eliminating system A noise eliminating system is disclosed for use in a radio receiver including a detector. The system comprises a differentiation circuit for differentiating the signal fed thereto from the detector, a clipper circuit for limiting the amplitude of the sign... | 06/02/1981 |
| 4256975 | Limiter circuit for removing nose from demodulated signals A diode limiter circuit comprising a low-pass filter for suppressing noise pulses superposed on a demodulated signal and for passing only the noise-suppressed demodulated signal, and a circuit means including limiter diodes whose conduction starting level... | 03/17/1981 |
| 4197505 | Limiter circuit A limiter circuit comprises circuit means for variably controlling a current source for a differential amplifier in accordance with the magnitude of a modulating signal carried by a carrier or a percentage modulation.... | 04/08/1980 |
| 4087641 | Noise limiting circuit for FM stereo receiver A noise limiting circuit for an FM stereo receiver comprises a filter circuit 13 for grounding high frequency components in the detector output signal through a transistor switch 14 in response to a low field strength signal supplied by the IF amplifier. ... | 05/02/1978 |
