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Pillow with retractable umbrella
A pillow assembly having a supporting assembly and a retractable umbrella assembly that is easily transportable and allows a user to support his/her head while covering their face from sunlight.
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| Number | Title | Issue Date |
| 8013675 | Combiner-less multiple input single output (MISO) amplification with blended control Multiple-Input-Single-Output (MISO) amplification and associated VPA control algorithms are provided herein. According to embodiments of the present invention, MISO amplifiers driven by VPA control algorithms outperform conventional outphasing amplifiers, including ... | 09/06/2011 |
| 7911272 | Systems and methods of RF power transmission, modulation, and amplification, including blended control embodiments Embodiments of the present invention enable a blended control approach to generate a desired output waveform in an outphasing-based system. Embodiments of blended control according to the present invention combine outphasing with bias and/or amplitude control to yie... | 03/22/2011 |
| 7642849 | Multiple-input and multiple-output amplifier The invention relates to an amplifier capable of producing a plurality of currents at its output terminals, these currents being controlled by a plurality of input voltages. A multiple-input and multiple-output amplifier of the invention includes 4 signal input term... | 01/05/2010 |
| 7408406 | Mode selection amplifier circuit usable in a signal acquisition probe A mode selection amplifier circuit has multiple differential amplifier circuits coupled to receive input signals A, B and C. Each differential amplifier circuit is selectively operable for generating a signal output representative of an output mode with the output m... | 08/05/2008 |
| 7403069 | Trifferential amplifier and trifferential amplifier system A multi-fferential amplifier system includes an amplifier having a plurality of amplifier inputs and a plurality of amplifier outputs; a plurality of input terminals for receiving a plurality of inputs and being interconnected with the amplifier inputs through a plu... | 07/22/2008 |
| 7276971 | Multi-operational amplifier system A multi-operational amplifier system comprises a plurality of operational amplifiers and a controller to configure the plurality of operational amplifiers. The operational amplifiers may be selectively configured to operate individually or in combination with other ... | 10/02/2007 |
| 7236054 | Multi-operational amplifier system A multi-operational amplifier system comprises a plurality of operational amplifiers and a controller to configure the plurality of operational amplifiers. The operational amplifiers may be selectively configured to operate individually or in combination with other ... | 06/26/2007 |
| 7098733 | Methods and circuits for selectable gain amplification by subtracting gains The present invention comprises methods and circuits for increasing the number of selectable gain settings of an amplifier by subtracting gains. In one embodiment, the amplifier is configured with three gain channels that are power-of-three weighted—that is, the g... | 08/29/2006 |
| 7030679 | Analog multiplexing circuits A multiplexer circuit includes a plurality of switched differential amplifier circuits, one of which can be selected at a time. Each switched differential amplifier includes a pair of differential inputs and a pair of differential outputs, with each pair of differen... | 04/18/2006 |
| 6809595 | Method of multiplexing column amplifiers in a resistive bolometer array A two dimensional array of resistive bolometers (B) is arranged in rows and columns. Amplifiers (A0, A1 etc) amplify signals obtained from the bolometers. Instead of providing one amplifier per column, a smaller number of amplifiers is used each of whi... | 10/26/2004 |
| 6788153 | Method of multiplexing column amplifiers in a resistive bolometer array A two dimensional array of resistive bolometers (B) is arranged in rows and columns. Amplifiers (A0, A1 etc) amplify signals obtained from the bolometers. Instead of providing one amplifier per column, a smaller number of amplifiers is used each of whi... | 09/07/2004 |
| 6535060 | System and method for noise and spurious supression in power amplifier systems An amplifier system including a vacuum tube amplifier having an input signal terminal and an output signal terminal, wherein the vacuum tube amplifier is for amplifying an input signal supplied to the input signal terminal, a phase comparator having a fir... | 03/18/2003 |
| 6489845 | Multiplexing amplifier A multiplexing amplifier has a differential amplifier for amplifying multiple input signals which are selected by a plurality input select circuits. The select circuits are comprised of longtail transistor pairs which are activated by current steering dio... | 12/03/2002 |
| 6388517 | Input change-over type amplifier and frequency change-over type oscillator using the same An input change-over amplifier is capable of effecting a change-over in outputting two signals having different frequencies, without lowering the signal levels thereof. Two signals having different frequencies are fed into two input terminals of an amplif... | 05/14/2002 |
| 6069533 | Circuit and method for automatically adjusting common mode rejection ratio A circuit and method for automatically adjusting a common mode rejection ratio. The circuit includes a mixing circuit for mixing two input signals received via first and second channel input terminals, eliminating noise from the input signals, and supplyi... | 05/30/2000 |
| 6054902 | High-frequency amplifier A high-frequency amplifier that can reduce the size, weight and price of a device that contains this high-frequency amplifier. The high-frequency amplifier has, for example, an input matching circuit of the low-pass type and an input matching circuit of t... | 04/25/2000 |
| 5652543 | Amplifier array for high-frequency signals and multiplexer configuration including the amplifier array An amplifier array for high-frequency signals includes a differential amplifier with transistors capacitively coupled to the emitters. The differential amplifier therefore has high-pass characteristics. The input signals are each supplied to the different... | 07/29/1997 |
| 5586114 | Multiplexing instrumentation preamplifier An oscilloscope preamplifier includes N inputs and Z outputs. A programmable cross-point multiplexer provides a first operating mode in which each of N inputs is connected to a different output thereby providing a preamplifier with Z channels, a second op... | 12/17/1996 |
| 5459434 | Detector amplifier for standby system A detector amplifier includes a first stage, a second stage and a low voltage supply. The first stage has a first input for receiving a first input signal, and an output for outputting a first output signal, and amplifies and/or demodulates the first inpu... | 10/17/1995 |
| 5406223 | Amplifier system for low level sensor signal An amplifier system embodying the invention includes an input stage comprising one or more differential amplifiers having a high degree of common mode rejection. The inputs of the differential amplifiers of the input stage are AC coupled to different sign... | 04/11/1995 |
| 5361038 | Active load applications for distributed circuits An active load applied to the gate transmission line termination of distributed power devices reduces the low frequency noise power appearing at the output of the device. The active load, including at least one active device such as a field effect transis... | 11/01/1994 |
| 5352987 | Analog multiplexer An analog multiplier includes a plurality of input stages that are selectively coupled to inputs of a common amplifier through coupling elements and logic circuitry that selectively controls conduction through the coupling elements to the amplifier. The c... | 10/04/1994 |
| 5304950 | Low power, low noise preamplifier with offset voltage cancellation Apparatus and methods are disclosed for providing a low power, low noise preamplifier, especially useful with a Forward Looking Infrared (FLIR) sensor array. Utilizing a differential amplifier, where one half of the differential pair is shared among a plu... | 04/19/1994 |
| 5276404 | Constant current video amplifier This invention is a constant current, noninverting, voltage amplifier powered by a single polarity of electrical power with respect to a ground potential. In a preferred embodiment, the amplifier consists essentially of a single transistor having a refere... | 01/04/1994 |
| 5148121 | Amplifier circuit designed for use in a bipolar integrated circuit, for amplifying an input signal selected by a switch circuit An amplifier circuit having a switch (SW), wherein the switch selects one of a plurality of input voltage-to-current converting amplifiers (GM1 to GMn), and the input amplifier, thus selected, converts an input signal into a current. This current is added... | 09/15/1992 |
| 5107224 | Wideband single-ended voltage-to-current converter and gain-control circuit In accordance with the teachings of this invention, a novel wide-band, DC coupled, single-ended voltage-to-current converter and gain control circuit is provided. Of importance, the circuit of this invention is designed to receive an input signal referenc... | 04/21/1992 |
| 5075633 | Instrumentation amplifier with single supply capacity and simplified gain equation A new instrumentation amplifier design uses three operational amplifiers (op amps), each of which has a feedback circuit connected from its output to its inverting input. The first op amp has a unity gain feedback, and is connected through a gain setting ... | 12/24/1991 |
| 5027081 | High gain differential-to-single ended amplifier having a tee network feedback loop An amplifier stage includes an operational amplifier having inverting and non-inverting inputs and an output and a resistive tee network coupled in the feedback loop between the inverting input and output to the non-inverting input which network is refere... | 06/25/1991 |
| 4994755 | Active balun A double balun circuit is provided by connecting two pairs of circut types. The first circuit, a distributed divider circuit, includes first and second pluralities of field effect transistors, a common input transmission line, and a first and second outpu... | 02/19/1991 |
| 4891706 | Analog and digital video display system A video display system having a forward locking infrared sensor which emits a linear video signal together with a digital graphics generator which generates digital video signals in a plurality of colors; together with a signal video amplifier for amplify... | 01/02/1990 |
| 4799026 | Multifunction amplifier A multifunction amplifier uses a finite transconductance amplifier to provide an amplifier with a high impedance input and a desired output impedance. A pair of appropriate polarity binary signals are summed to form a ternary signal which may be filtered ... | 01/17/1989 |
| 4764733 | Asymmetrical dual input amplifier An amplifier system having an input active device at its first input and having its second input provided through an inverting means to that first input.... | 08/16/1988 |
| 4760346 | Switched capacitor summing amplifier A switch capacitor summing amplifier is disclosed having a coupling means to couple desired signals to the active amplifier in response to an enable signal. The coupling is performed in synchronism to the "odd" phase of the sampling signals thereby improv... | 07/26/1988 |
| 4683441 | Apparatus for establishing the differences between multiple pairs of analog input signals A bank of differential amplifier circuits includes specialized circuits to provide multi-channel differencing with a minimum number of active devices such that the differences between pairs of analog input signals, such as available from patient monitorin... | 07/28/1987 |
| 4633188 | Mixer/amplifier circuit A mixer/amplifier circuit for selectively mixing a first input signal with a local oscillator signal or amplifying a second input signal. The mixer/amplifier circuit includes a transistor, a first circuit arrangement responsive to a first switching signal... | 12/30/1986 |
| 4616190 | Differential amplifier with current steering to enhance slew rate A steering circuit (10) in a differential amplifier having a pair of differentially arranged input amplifiers (A1 and A2) steers current from a pair of current sources (11 and 12) in such a way as to enhance slew rate without increasing offset voltage. Th... | 10/07/1986 |
| 4553105 | Multistage linear amplifier for a wide range of input signal levels A multistage amplifier with a low noise figure linearly amplifies an input signal having a level which varies over a wide range. The first stage of the amplifier provides a low noise figure and sufficient power gain to ensure overall low noise performance... | 11/12/1985 |
| 4536716 | Stereo amplifier circuit for bichannel signals A stereo amplifier circuit which comprises a first circuit responsive to a first input signal and to a second input signal for generating a first output signal which corresponds to the potential difference between the first and second input signals, a sec... | 08/20/1985 |
| 4484146 | Differential amplifier containing a low-pass filter A differential amplifier which incorporates at its preceding stage resistances and condensers combined with each other and serving as a low-pass filter, thereby omitting a conventional low-pass filter separate from a differential amplifier provided at a w... | 11/20/1984 |
| 4423386 | Multisignal amplification The present invention provides a modified distributed amplifier which is capable of accepting two or more independent inputs and amplifying them without giving rise to a large number of significant intermodulation products. This modified distributed ampli... | 12/27/1983 |
