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"The wireless music box has no imaginable commercial value. Who would pay for a message sent to nobody in particular?"
David Sarnoff, American radio pioneer ; 1921
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| Number | Title | Issue Date |
| 7372291 | Circuits having precision voltage clamping levels and method A slew rate control circuit includes a receiver for receiving input signals and an output generator for generating output signals based on the input signals. The slew rate control circuit also includes an electrical interconnection coupling an output of the receiver... | 05/13/2008 |
| 7368969 | Level shift circuit and semiconductor device A level shift circuit including a capacitor, a charge control circuit, and a limiting circuit. The charge control circuit is connected to the capacitor to provide the voltage of a high potential power supply to the capacitor and to control the charging of the capaci... | 05/06/2008 |
| 7269551 | Apparatus including an error detector and a limiter for decoding an adaptive differential pulse code modulation receiving signal An apparatus for decoding encoded voice data comprises a demodulator (101) which demodulates the encoded voice data (RF) and provides a demodulated encoded voice data (APO, RD), an adaptive differential pulse code modulation decoder (102) which decodes... | 09/11/2007 |
| 7173487 | Power amplification circuit and communication device using the same A power amplification circuit, and a communication device using the same, which are capable of suppressing gain decreases of a power amplifier due to increases in input signal power in a state near the saturation operation, capable of reducing its size, and low in d... | 02/06/2007 |
| 6917239 | Level shift circuit and semiconductor device A level shift circuit including a capacitor, a charge control circuit, and a limiting circuit. The charge control circuit is connected to the capacitor to provide the voltage of a high potential power supply to the capacitor and to control the charging of the capaci... | 07/12/2005 |
| 6762636 | Circuit and method for adjusting duty cycle of a high speed, low swing output signal A circuit, system, and method is provided for regulating the pulse width and/or duty cycle of a signal indirectly or directly used to drive, e.g., a transmitter. The load of the transmitter can be, for example, an optical signal transmitter. The circuit includes a f... | 07/13/2004 |
| 6750694 | Signal clipping circuit A clipping circuit (20) for clipping an input signal to a level corresponding to a regulated power supply voltage (AVDD). The clipping circuit (20) includes a current mirror-like arrangement having a reference transistor (30) and a mirror transi... | 06/15/2004 |
| 6356606 | Device and method for limiting peaks of a signal A method and device for limiting peaks of an input signal. The device and method isolate peaks of an input signal based on a clipping threshold voltage, generate an extrema signal representing the local extrema of the peak isolated signal, filter the extr... | 03/12/2002 |
| 6281735 | Voltage clamping circuits for limiting the voltage range of an input signal An input signal voltage clamping circuit that provides asymmetrical, or unipolar, voltage clamping for an input signal terminal of a circuit. For a circuit having a positive power supply voltage relative to its ground, or reference, terminal and an input ... | 08/28/2001 |
| 6278312 | Method and apparatus for generating a reference voltage signal derived from complementary signals A driver circuit and a receiver circuit. The driver circuit is coupled to drive two complementary signals and the receiver is coupled to receive the two complementary signals. The receiver circuit generates a reference voltage from the two complementary s... | 08/21/2001 |
| 6208199 | Pulse amplifier with low duty cycle errors A low power pulse amplifier with low duty cycle errors. The amplifier provides several differential amplifier stages with a biasing and canceling network. To minimize duty cycle errors for large input signals, cascode transistors are added between the dra... | 03/27/2001 |
| 5959492 | High speed differential driver circuitry and methods for implementing the same An integrated circuit driver drives a differential signal over a communication cable, such as a twisted-pair cable. The integrated circuit driver includes a differential pre-driver that receives an input signal having an about 50% duty cycle and produces ... | 09/28/1999 |
| 5903028 | Static and monolithic current limiter and circuit-breaker The present invention relates to a static and monolithic current limiter and circuit-breaker component including, between two terminals, a one-way conduction current limiter, a sensor of the voltage between the terminals, and a mechanism for inhibiting th... | 05/11/1999 |
| 5818260 | Transmission line driver having controllable rise and fall times with variable output low and minimal on/off delay A driver for providing binary signals from a data system to a transmission line includes a data input node and an output transistor coupled between a data output node and ground. The output transistor has a gate, a source and a corresponding gate-source v... | 10/06/1998 |
| 5793127 | Inductive load driver circuit with shared flyback protection An inductive load driver circuit with shared flyback protection includes a first transistor (209) which drives a first load (229), and a second transistor (231) drives a second load (251). A first clamp voltage steering diode (217) is coupled between an i... | 08/11/1998 |
| 5751705 | Code division multiple access base station transmitter A digital base band section includes spread units for directly spreading input transmission data every channel by different spread codes to output spread signals, a summer for summing up the spread signals to output a multiplexed spread signal, a limiter ... | 05/12/1998 |
| 5631969 | System for limiting the magnitude of sampled data An analog signal is sampled at sampling rates which are low relative to the highest frequency components of the analog signal. The digitized sample signals are processed and amplitude limited in a digital signal processor. Real and imaginary components fo... | 05/20/1997 |
| 5600280 | Differential amplifier and variable delay stage for use in a voltage controlled oscillator A differential amplifier or delay cell for use in a voltage controlled oscillator comprises a pair of clipper transistors coupled across the output nodes of the amplifier for limiting the voltage swing of the output to a transistor threshold and improving... | 02/04/1997 |
| 5587681 | DC restoration circuit In a D.C. restoration circuit for a digital FM radio receiver, in which demodulated signals may be presented at the output of the demodulator as low-level differential signals superimposed on a variable D.C. level, the differential signal paths are capaci... | 12/24/1996 |
| 5514979 | Methods and apparatus for dynamically reducing ringing of driver output signal Disclosed is a bus driver circuit that dynamically clamps the bus voltage for a predetermined period following a transition of the bus voltage, thereby reducing overshoot and ringing. The disclosed circuit dynamically clamps the initial overshoot at appro... | 05/07/1996 |
| 5504446 | AC voltage clipper in MOS-technology AC voltage clipper for a MOS-circuit having two input terminals (In1, In2) receiving an ac supply voltage, wherein one input terminal (In1) is connected to a point of common voltage through a first MOS-transistor (MCL41) and the other input terminal (In2)... | 04/02/1996 |
| 5430335 | Simplified low-noise output buffer circuit An output buffer circuit has a pull-up output transistor controlled by a first node and a pull-down output transistor controlled by a second node. The first node is coupled to the second node through a switching stage controlled by feedback from the outpu... | 07/04/1995 |
| 5426389 | System for DC restoration of serially transmitted binary signals A device for restoring DC and non-zero average components of a serially transmitted binary signal which has been AC coupled. The device comprises an input port for the binary signal, a clamping circuit, a feedback network, a summing node, and an output po... | 06/20/1995 |
| 5053651 | Deglitched digital mixer circuit A digital mixer employs a plurality of flip-flops to mix two digital input signals and provide a beat frequency output. The first input signal is provided as a clock signal to a first D flip-flop and to a third JK flip-flop. The second input signal is pro... | 10/01/1991 |
| 5036232 | Push-pull output stage of integrated circuit providing enhanced high-low voltage level signal transition with ground bounce control A push-pull output stage of an integrated circuit for generating a pulse-like output signal in dependence upon a pulse-like input signal. The push-pull output stage includes complementary output field-effect transistors which are formed by respective firs... | 07/30/1991 |
| 4994689 | Semiconductor integrated circuit device A potential of a semiconductor substrate is clamped to a ground potential by a VBB clamping circuit until a first time period has elapsed since turning on of a power supply. Furthermore, the operation of a main circuit is prohibited until a sec... | 02/19/1991 |
| 4970419 | Low-noise transmission line termination circuitry Transmission line termination circuitry is provided on a driven IC chip utilizing active transistors constructed and arranged so as to steer appropriately directed damping currents into the input bus in a manner which effectively minimizes both overshoot ... | 11/13/1990 |
| 4965474 | Glitch suppression circuit The described embodiment of the present invention includes a combinatorial circuit, such as a multiplexor. All or a portion of the input signals to the multiplexor are also provided to a transition detector. Upon detecting a transition, the transition det... | 10/23/1990 |
| 4924120 | Low noise output circuit A output circuit is provided which contains voltage control circuitry (14) which drives the gates of the output transistors (18,20) such that the change in current remains relatively constant. The desired voltage output of the voltage control circuitry (1... | 05/08/1990 |
| 4908526 | Pulse generator output voltage calibration circuit A calibration circuit for a pulse generator which produces pulse rise and pulse fall times by charging and discharging a capacitor at selected currents and clamps the pulse high voltage output and pulse low voltage output at selectable voltage levels. An ... | 03/13/1990 |
| 4849654 | Semiconductor integrated circuit with input protection circuit A semiconductor device having an input protection circuit is disclosed. The semiconductor device includes a power-on reset circuit which generates a pulse having a pulse width determined according to an input surge, applied to an input terminal when an in... | 07/18/1989 |
| 4823020 | High voltage pulse top clipper with precise regulation of clipping level A high voltage pulse clipper for stabilizing the amplitude of successive pulses applied, for example, as modulator pulses to a microwave transmitter. A source of such pulses has its output connected across a capacitor through a series diode whereby the ca... | 04/18/1989 |
| 4823028 | Multilevel logic circuit with floating node voltage clamp A multilevel logic circuit includes a pair of resistors coupling collectors of an emitter-coupled pair of transistors to a voltage source, and includes a switch selectively connecting the emitters of the transistors to a current source. When the switch is... | 04/18/1989 |
| 4816699 | Slice amplifier using FET's A slice amplifier using field effect transistors (FET's) is provided which is suitable for achieving a correct discrimination of logics "0" and "1" of an input signal (Sin) at very high speed by reshaping the input signal (Sin) into ... | 03/28/1989 |
| 4803384 | Pulse amplifier suitable for use in the semiconductor laser driving device A semiconductor laser driving device using FET's as a positive element in a bias current supply circuit and a pulse current supply circuit, and having compensating circuits for compensating differences in the characteristics of the FET's and a laser diode... | 02/07/1989 |
| 4698520 | Method and apparatus to trigger the current-conducting state of gate-turn-off thyristor A method and apparatus to maintain the current-conducting state of a gate-turn-off thyristor by appropriate triggering. To maintain the thyristor's current-conducting state reliably and with little ignition energy consumed, a comparator signal is generate... | 10/06/1987 |
| 4626788 | Circuit for reconstructing noise-affected signals An analog signal which is affected by impulse noise is applied to a timing circuit that generates a sampling pulse in response to a noise impulse introduced in the desired signal. This noise-affected signal is also applied to a holding circuit which passe... | 12/02/1986 |
| 4517518 | Circuit arrangement for reconstructing noise-affected signals An analog input signal is applied to a timing circuit (2) for generating a sampling pulse in response to an impulse noise introduced to the signal and also to a first sample-and-hold circuit (7, 8, 9) through a buffer amplifier (6). The first sample-and-h... | 05/14/1985 |
| 4449061 | Wave-shaping circuit for digital signal A wave-shaping circuit for digital signal includes a slice or clipping circuit for slicing or clipping an input digital signal with a predetermined threshold level; a detecting circuit for detecting the pulse widths of high and low level portions of the s... | 05/15/1984 |
| 4404475 | Integrated circuit high voltage pulse generator system An integrated circuit system for generating a regulated high voltage tunneling pulse whose voltage level varies as a function of the voltage level needed to initiate tunneling of electrons across one or more dielectric gaps between respective first and se... | 09/13/1983 |
