Quotables
"To place a man in a multi-stage rocket and project him into the controlling gravitational field of the moon where the passengers can make scientific observations, perhaps land alive, and then return to earth--all that constitutes a wild dream worthy of Jules Verne. I am bold enough to say that such a man-made voyage will never occur regardless of all future advances."
Lee deForest, American radio pioneer ; 1957
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| Number | Title | Issue Date |
| 7358808 | Method and device for amplification of data signals over power lines A device for bi-directional amplification of data signals over power lines is disclosed. In one embodiment, the device includes a bandpass filter, a frequency converter and an amplifier. The bandpass filter filters out undesired frequencies and the frequency convert... | 04/15/2008 |
| 7292860 | Cell formation control method, a mobile communications system, and a base station and a mobile station used therein When a base station of a mobile communications system attempts to reduce its cell radius for power saving, frequency re-use enhancement and the like, a risk is that an ongoing communication between a mobile station served by the base station may be disconnected, whi... | 11/06/2007 |
| 7245894 | Radio receiver and radio signal processing method with controlling gain A radio receiver comprises a first amplifier to amplify a received radio signal; a quadrature demodulator to demodulate the radio signal amplified by said first amplifier and thereby generate a baseband signal; a second amplifier to amplify the baseband signal; a de... | 07/17/2007 |
| 7200372 | Reduction of dynamic DC offsets in a wireless receiver A gain control system in a Direct Conversion Receiver or similar receiver, includes an automatic gain control circuit which determines whether a low noise amplifier, which amplifies signals from an antenna prior to mixing with signals from a local oscillator, should... | 04/03/2007 |
| 7174133 | Systems and methods for determining the delay offsets of communication systems Methods for determining delay offsets of communication systems are provided. One such method comprises: determining components of a propagation path of a base station of a communication network; determining a propagation delay associated with each of the components;... | 02/06/2007 |
| 7082291 | Automatic gain control A method for controlling gain of an amplifier includes amplifying one or more received signals to produce one or more amplified signals. The method also includes generating a plurality of down converted signals using the one or more amplified signals. The method fur... | 07/25/2006 |
| 7081926 | Automatic gain control apparatus for video signal and adjusting method thereof An automatic gain control apparatus for a video signal and adjusting method thereof, An RF(Radio Frequency) automatic gain control apparatus receives a reproduced video signal from a demodulator, controlling a gain of an RF amplifier according to the reproduced vide... | 07/25/2006 |
| 7046749 | Narrowband gain control of receiver with digital post filtering An Automatic Gain Control (AGC) circuit as used in a digital receiver that utilizes a main loop filter that is of a relatively wide bandwidth. A pre-filter, wideband variance is determined from the input digital signal, and a post-filter, narrowband variance is also... | 05/16/2006 |
| 7003272 | Radio apparatus with adjustable reception quality A radio apparatus (95), particularly for mobile radio, which makes it possible to adjust the signal reception in a predeterminably optimized way is proposed. The radio apparatus (95) includes a receiver part (1) and an evaluation unit (5)... | 02/21/2006 |
| 7002638 | Automatic gain control In a method of automatic gain control for both TV and FM radio signals, the TV and FM radio signals are controllably amplified (AGC-AMP) to obtain amplifier output signals, the amplifier output signals are tuner processed (F, MIX, IF-AMP) to obtain tuner output sign... | 02/21/2006 |
| 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 |
| 6853837 | CDMA receiver and DCMA demodulator with AGC circuit A CDMA demodulator is disclosed, which comprises an AGC loop (13 to 20) including a IF signal converter (12) for converting a spread spectrum signal to an IF signal and an AGC amplifier (13) for variable gain amplifying the IF signal with... | 02/08/2005 |
| 6546237 | Differential FM detector for radio receivers A differential FM detection of signals uses in-phase and quadrature phase signal components of a received signal in the detection process, wherein the in-phase and quadrature phase signal components are at a low intermediate frequency (IF). The in-phase a... | 04/08/2003 |
| 6169887 | Range extension within a communication system Receivers (201, 202) within a base station (101) receive a transmission from a remote unit (114). The received signal is delayed a first amount by first delay circuitry (203), and a second amount by second delay circuitry (204). During despreading, a dela... | 01/02/2001 |
| 6151481 | Combiner with phase and delay correction A combining technique for coherently combining signals transmitted from a moving satellite that are received by separate antennas. The combining technique corrects for differential delays that are large enough to cause misalignments in the symbols of the ... | 11/21/2000 |
| 6101376 | Squelch circuit and methodology for a multi-level quantizer An improved squelch circuit and methodology for a multi-level quantizer employing one or more amplifiers to amplify an input signal at different gains. Comparators coupled to corresponding amplifiers or amplifier stages produce pulses based on comparing t... | 08/08/2000 |
| 5999802 | Direct conversion tuner A direct conversion tuner for tuning either analog or digital television signals includes a first and second channels, each having first and second mixers and an intervening filter stage, coupled between an RF input and an output combining unit. The first... | 12/07/1999 |
| 5305109 | Parallel untuned video if amplifiers supplied signals from TV 1st detector via respective input filters In TV receiving apparatus, a first IF amplifier chain comprises a first gain-controlled amplifier followed in cascade connection by a second gain-controlled amplifier, and a second IF amplifier chain comprises a third gain-controlled amplifier followed in... | 04/19/1994 |
| 5203016 | Signal quality-dependent adaptive recursive integrator The gain of a recursive integrator is controlled so as to be adaptive to the quality of a received signal by comparing the magnitude of its emphasized information component with a reference voltage and controlling the gain of the integrator's feedback del... | 04/13/1993 |
| 5175883 | Receiving apparatus A receiving apparatus according to the present invention comprises a high frequency amplifying circuit for amplifying a signal received from an antenna by a gain in accordance with a control signal, a frequency conversion circuit for converting the output... | 12/29/1992 |
| 4827511 | Automatic gain control circuit for controlling gain of video signal in television receiver An intermediate-frequency automatic gain control circuit generates an IFAGC voltage for controlling the gain of an IF amplifier, in accordance with the level of the output signal of the IF amplifier. An RFAGC voltage provides a voltage for controlling the... | 05/02/1989 |
| 4811423 | SSB receiver with improved feedforward AGC SSB receivers which use feedback and feedforward automatic gain control (AGC) are subject to bursts of noise in the audio output due to the action of the feedforward AGC when signals having low signal to noise (S/N) ratios are being received. This inventi... | 03/07/1989 |
| 4411019 | AGC System for television receivers An AGC system is described for setting a plurality of different AGC delay points for various channels or bands of channels in a television receiver. In one embodiment, the system includes an AGC control which develops a gain control signal for the UHF and... | 10/18/1983 |
| 4393513 | Input signal level control device for receiver An input signal level control device for a receiver particularly adapted for use in a mobile FM receiver in which the received electric field strength changes abruptly and greatly. An attenuating device such as a switching diode is coupled to an input of ... | 07/12/1983 |
