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A self-righting hand-arm configuration which is adapted to pivot when struck by a user, thereby simulating a "high five."
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| Number | Title | Issue Date |
| 7302021 | Digital broadcast receiving apparatus In a digital broadcast receiving apparatus for amplifying a received modulated digital signal wave with automatically adjusted gain and demodulating the modulated signal wave to a digital signal, a tuner frequency-converts the modulated digital signal wave to genera... | 11/27/2007 |
| 7292103 | Amplifier system having compensated amplification variation An amplifier system is provided for amplifying an input signal to provide an amplified output signal, amplifying an amplified input signal to provide a further amplified output signal, and phase delay compensating variations of the amplifications of the amplified ou... | 11/06/2007 |
| 7228114 | Wide dynamic range power detection scheme A power detection circuit is described that provides for a wide dynamic range power detection. The circuit incorporates a coupler to sample a transmitted or received power. Such sampled power is then directed to a detector diode configured to generate a voltage from... | 06/05/2007 |
| 7199665 | Single to dual non-overlapping converter A converter includes an input circuit to receive a single-ended input signal to generate a number of control signals. The control signals have a delay different from one another relative to the single-ended input signal. The converter also includes a first output ci... | 04/03/2007 |
| 7196579 | Gain-controlled amplifier, receiver circuit and radio communication device A gain-controlled amplifier capable of dealing with the system for performing the receiving operation continuously, and capable of correcting a change of a DC offset owing to an operation condition such as temperature; a receiver circuit using the gain-controlled am... | 03/27/2007 |
| 7190222 | Predistorter A predistortion distortion signal generating unit uses a signal to be amplified to generate a predistortion distortion signal including odd-order signal components of the signal. A delay time difference adjusting unit adjusts a delay time difference between a signal... | 03/13/2007 |
| 7133082 | Digital television receiver with remote tuner for driving transmission line with intermediate-frequency signal An outdoor-antenna digital television receiver system has an electrically controlled remote tuner located close to the antenna. In response to a remote control signal, the remote tuner selects a particular radio-frequency digital television signal to be received, co... | 11/07/2006 |
| 7113035 | Electronic circuit An electronic circuit for adjusting a property of an input signal of a non-linear element is disclosed. A detector detects a strength of the input signal. An analog controller forms a control signal as a piecewise approximation of a non-linear dependency between the... | 09/26/2006 |
| 7065336 | Analog base band unit for a RF receiver and method for using the same A feedback circuit for amplification of the output signal of an analog front end and suppression of its DC and low frequency components comprises a variable gain amplification unit (2) controlled by a gain control signal and a reverse path unit (6) com... | 06/20/2006 |
| 6977548 | Predistortion circuit, low-distortion power amplifier, and control methods therefor An amplitude frequency characteristic adjustment circuit 106 is provided downstream of and connected to a distortion generation circuit 105. An amplitude difference between low-frequency-side and high-frequency-side distortion voltages is adjusted by t... | 12/20/2005 |
| 6960957 | Predistortion circuit, low-distortion power amplifier, and control methods therefor An amplitude frequency characteristic adjustment circuit 106 is provided downstream of and connected to a distortion generation circuit 105. An amplitude difference between low-frequency-side and high-frequency-side distortion voltages is adjusted by t... | 11/01/2005 |
| 6859101 | Frequency-selective phase/delay control for an amplifier The insertion phase or delay of an amplifier can be controlled by comparing signals from the amplifier path with signals from a corresponding reference path without requiring the overall signal delay through the reference path to nominally match the overall signal d... | 02/22/2005 |
| 6831516 | Method of forming a variable propagation delay semiconductor device and structure therefor A differential amplifier (10, 60) is formed to have a propagation delay that varied responsively to a control signal received on a differential control signal input. The propagation delay is varied by changing the bias current of a pair of differential input ... | 12/14/2004 |
| 6763470 | System and method for dynamically amplifying a delayed analog signal based on amplitude information obtained from its digital representation The present invention is directed to a signal processing and amplifying system that uses advance knowledge of a digital signal, before it is converted to analog form and applied to the input stage of the amplifier stage, to “intelligently” amplify the signal wit... | 07/13/2004 |
| 6664850 | Delay variability reduction method and apparatus A method for reducing delay variability in a differential receiver includes receiving a plurality of differential input signals, determining a first transition delay time of an output in response to the plurality of differential input signals, determining... | 12/16/2003 |
| 6603359 | High-frequency power amplifying apparatus A high-frequency power amplifying apparatus includes a plurality of series-connected amplifiers, a power controller for selectively supplying an output terminal with an output from a desired one amplifier in accordance with a demanded output power and for... | 08/05/2003 |
| 6590449 | Predistortion circuit, low-distortion power amplifier, and control methods therefor An amplitude frequency characteristic adjustment circuit 106 is provided downstream of and connected to a distortion generation circuit 105. An amplitude difference between low-frequency-side and high-frequency-side distortion voltages is adjusted by the ... | 07/08/2003 |
| 6573786 | Electronic devices comprising an audio amplifier and methods for controlling such electronic devices An electronic device comprises an audio amplifier, a main microprocessor and a user interface microprocessor. The UI microprocessor has a control pin for muting the audio amplifier. A muting circuit is provided for muting the audio amplifier when a signal... | 06/03/2003 |
| 6531921 | Operational amplifier An operational amplifier includes a differential amplification circuit, a voltage amplification circuit, a capacitor, and a bias setting circuit. The differential amplification circuit includes load transistors arranged in a cascode connection. The voltag... | 03/11/2003 |
| 6484017 | Up converter of base station transmitter in wireless communication system and method of controlling outputs thereof Disclosed an up converter of base station transmitter of an wireless communication and method of controlling outputs of the up converter to control output signals of the up converter in accordance with the conditions of the strength of input signal and/or... | 11/19/2002 |
| 6380804 | Method and apparatus for switching stages of a multistage amplifier quickly between operational modes The stages of a multistage amplifier are quickly switched between operational modes, e.g., from a standby mode to an active mode. The delivery of a control signal to each individual stage is delayed so that the modes of the stages are switched, in a desir... | 04/30/2002 |
| 6133789 | Method and system for robustly linearizing a radio frequency power amplifier using vector feedback A method of linearizing an amplifier having an input and an output involves the steps of amplifying the amplifier input signal with a vector modulator having a gain adjustment signal input for receiving a gain adjustment signal and adjusting the gain of t... | 10/17/2000 |
| 6121835 | Variable time delay network, method and apparatus thereof A variable time delay network (210) includes segments (270, 260) which are connected in parallel to form variable time delay network (210). Segment (270) includes a varactor diode (222) and an inductive element (223) connected in series at an anode electr... | 09/19/2000 |
| 6107879 | Automatic dynamic range control circuit An automatic dynamic range control circuit is provided with a fixed-gain first circuit means and a variable-gain second circuit means having substantially the same propagation delay as the first circuit means. The automatic dynamic range control circuit h... | 08/22/2000 |
| 6047167 | Output power control device A comparator (5) compares a detected voltage obtained by detecting an output power of a nonlinear amplifier (2) with a reference voltage to generate a control voltage for the nonlinear amplifier (2). The control voltage is converted into such a control vo... | 04/04/2000 |
| 5805022 | Circuit for automatically regulating the gain of a differential amplifier A circuit having a double half-wave rectifier connected to the outputs of a differential amplifier in order to produce two quantities dependent on the amplitudes of the half-waves of the output signal of the amplifier. Two comparators each having an input... | 09/08/1998 |
| 5745016 | Method for improving power measurement implemented with a directional coupler at low power levels The invention relates to a directional coupler arrangement and measurement of radio frequency electric power with a directional coupler arrangement, which arrangement comprises a directional coupler, in which a terminal impedance, a detector element and a... | 04/28/1998 |
| 5699017 | Automatic gain control circuit An automatic gain control circuit is provided, which has minimum variations in the output signal level even with the presence of variations in component parts thereof and the temperature dependency of component parts thereof and can therefore dispense wit... | 12/16/1997 |
| 5677962 | Hybrid analog and digital amplifier with a delayed step change in the digital gain An amplifier comprises a variable gain analog amplifier for amplifying an input analog signal to generate an intermediate analog signal, the gain of the analog amplifier being switchable between two or more discrete gain values. An analog to digital conve... | 10/14/1997 |
| 5672999 | Audio amplifier clipping avoidance method and apparatus An audio amplifier clipping avoidance apparatus (140) identifies signal segments of an audio signal that can have an amplitude peak greater than a particular amplifier clip avoidance threshold (530). A scaling factor is determined for each signal segment ... | 09/30/1997 |
| 5606285 | Power control circuit for use with transmitter A power control circuit having a saturation preventing control loop including a variable gain amplifier, an RF power amplifier, a directional coupler, a detecting circuit, a comparator, a switch, and an adder. When the signal level of an output signal of ... | 02/25/1997 |
| 5515008 | Output level automatic control apparatus An output level automatic control apparatus suitable for use to keep a transmitted output level of a radio system constant has an objective to prevent an output level above a specified value from being transmitted if an input level abruptly becomes a norm... | 05/07/1996 |
| 5515004 | Method and apparatus for precision gain control for amplified signals An automatic gain control circuit (100) provides precision gain control for amplified signals. An offset generator (130) generates an offset signal (132) from an output signal (108) of a variable gain amplifier, shifted according to a target signal level,... | 05/07/1996 |
| 5483198 | Method and apparatus for controlling amplifier power A method and apparatus for controlling an amplifier power output, in particular, a transmitter RF Amplifier includes a control circuit connected to the RF Amplifier. The control circuit derives a control signal from a shaper circuit and this control signa... | 01/09/1996 |
| 5475342 | Amplifier for stably maintaining a constant output An amplifier having an automatic threshold control circuit (ATC) and a limiting amplifier. The ATC detects and holds a top value (peak value) and bottom value of an input signal, and outputs the middle value between the top and bottom values as a referenc... | 12/12/1995 |
| 5412341 | Power control apparatus and method for a radio frequency amplifier A power controller for a class C radio frequency power amplifier that exhibits an output power threshold, including a detector circuit (299) that detects a output power level to provide a level signal when the radio frequency power amplifier has achieved ... | 05/02/1995 |
| 5404115 | Variable gain amplifier An amplifying system for variably amplifying electrical input signals, depending on magnitudes of those signals, with the variation in amplification being selectable as is substantially the maximum output signal value.... | 04/04/1995 |
| 5363057 | Control device for power amplifier A control device for a power amplifier controls the power amplifier upon a rise in output power based on a power variation pattern stored in storage means to suppress a power overshoot which occurs upon a rise in output power.... | 11/08/1994 |
| 5339046 | Temperature compensated variable gain amplifier An amplifier for a radio transceiver overcomes the problem of gain being dependent on ambient temperature. Transmission power is matched to strength of a received signal by providing matched dual gate FET amplifier stages in both the transmitter and recei... | 08/16/1994 |
| 5337020 | Differential radio frequency detector/comparator for power level control An automatic level control circuit for radio frequency power amplifiers which is immune to temperature and power supply induced variations. The level control circuit (42) employs a detector/comparator comprising a matched transistor pair (55) operating as... | 08/09/1994 |
