Bizarre Patents
Wearable Device For Feeding and Observing Birds and Other Flying Animals
A device for feeding and observing flying animals comprising a hat, a support mounted on the hat and extending outward from the hat, and a feeder mounted on the support.
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| Number | Title | Issue Date |
| 8154336 | Method and apparatus for reducing interference A method and apparatus is provided for reducing interference in circuits. A management strategy is provided to reduce reference spurs and interference in circuits. The management strategy uses a combination of one or more techniques which reduce the digital current,... | 04/10/2012 |
| 8018273 | Filter circuit A filter circuit that removes high-frequency components from an input signal, comprises: an operational amplifier; a first resistor connected between a non-inverting input terminal of the operational amplifier and an input signal source; a first capacitor connected ... | 09/13/2011 |
| 7915952 | Semiconductor integrated circuit In a semiconductor integrated circuit, a switching circuit controls the capacity of a capacitor unit based on a control signal from a control circuit and separates a resonant frequency determined by first inductance, second inductance, and the capacity of the capaci... | 03/29/2011 |
| 7902917 | Current-input current-output reconfigurable passive reconstruction filter Embodiments of the present invention relate generally to reconstruction filtering. In particular, embodiments enable highly linear, highly programmable, and easily reconfigurable reconstruction filters. Further, embodiments provide substantial power consumption, are... | 03/08/2011 |
| 7884666 | Method and apparatus for reducing interference A method and apparatus is provided for reducing interference in circuits. A management strategy is provided to reduce reference spurs and interference in circuits. The management strategy uses a combination of one or more techniques which reduce the digital current,... | 02/08/2011 |
| 7880536 | Simplified sallen-key low-pass filter circuit Circuits, methods and devices for providing low-pass filtering are implemented according to a number of different embodiments. In one such embodiment a Sallen-Key low-pass filter circuit is implemented that comprises a first resistor and a second resistor connected ... | 02/01/2011 |
| 7876148 | Low pass filter and lock detector circuit A low pass filter includes a driver unit configured to output a voltage proportional to an input pulse width, a charge/discharge unit configured to charge the output voltage of the driver unit, a comparator unit configured to compare an output voltage of the charge/... | 01/25/2011 |
| 7868688 | Leakage independent very low bandwith current filter A current filter circuit is provided. The current filter circuit comprises a source transistor comprising a drain, a gate, and a source. The source of the source transistor is coupled to a reference voltage terminal, the gate of the source transistor is coupled to t... | 01/11/2011 |
| 7800435 | Audio filter using a diode connected MOSFET A diode connected P-type CMOS transistor is operated in the sub-threshold area and, with a bypass capacitor, operates as a low pass audio filter. The equivalent resistance of the CMOS transistor in the sub-threshold range is very high—in the gigaOhm range. With th... | 09/21/2010 |
| 7795957 | Power supply circuit for south bridge chip A power supply circuit for a south bridge chip includes a voltage conversion chip having a first voltage input terminal, a second voltage input terminal, a driving voltage output terminal, and a gate voltage output terminal, a control circuit having a first control ... | 09/14/2010 |
| 7795956 | Multi format video filter design Current generation digital media processors support multi-format video resolutions, SDTV, Progressive Scan and HDTV. Built-in video encoders directly support NTSC and progressive 480P video outputs. These two video formats have different image bandwidth and output g... | 09/14/2010 |
| 7782127 | Multi-mode reconstruction filter A circuit (e.g., a reconstruction filtering circuit) may include a single operational amplifier (op-amp) that is arranged to receive a voltage input and that is arranged to have a biasing of constant gmR, a first device capacitor that is operatively coupl... | 08/24/2010 |
| 7760014 | Lowpass biquad VGA filter A biquad gain stage, as well as a Variable Gain Amplifier is disclosed. The biquad gain stage comprises a plurality of transistors as well as conductances, and capacitances, as well as current sources. The resulting variable gain amplifier comprising a plurality of ... | 07/20/2010 |
| 7683704 | Multiple order low pass filter for an xDSL splitter in a telecommunication system A single-ended low pass filter and its double-ended or balanced version comprising a first coil (Lp1) coupled between a first input (Vin1) and a first output (Vout1) terminal of the filter, a second coil (Lp2) coupled between a second inp... | 03/23/2010 |
| 7675356 | Digital controlled filter system and filtering method A filter system and filtering method includes a subtractor which receives an analog input signal and a reference voltage as a first input, and an analog feedback signal, supplied through a feedback loop, as a second input, and outputs a difference between the analog... | 03/09/2010 |
| 7649408 | Loop filters Loop filters are provided, in which a first resistor comprises a first terminal coupled to a first node, and a second terminal coupled to a second node; a first capacitor is coupled between the second node and a ground voltage, a second resistor comprises a first te... | 01/19/2010 |
| 7592864 | High-order low-pass filter circuit and method A low-pass filtering circuit and method are disclosed. The circuit includes a low-pass filter with a capacitor, and a multiplier configured to multiply the capacitance of the capacitor by feeding-back a high-frequency signal apparent in an output signal of the low-p... | 09/22/2009 |
| 7564301 | Apparatus for adjusting frequency characteristic and Q factor of low pass filter and method thereof Provided are an apparatus for adjusting frequency characteristic and Q factor of a low pass filter (LPF) and a method thereof. The apparatus includes: a frequency comparing unit for calculating a first square value and a second square value, and comparing a first re... | 07/21/2009 |
| 7535289 | Integrated RC filter An integrated RC filter comprises a first resistor being coupled to a first capacitor through a first node and a signal input of said integrated RC filter is coupled through one of the first resistor and the first capacitor to the first node. To allow for an increas... | 05/19/2009 |
| 7466192 | Low-pass filter and voltage-current conversion circuit used in the same A low-pass filter with a high signal-to-noise ratio is provided. A low-pass filter includes a first RC filter circuit, a differential operation circuit subtracting an output signal from a low frequency component of an input signal and outputting a differential signa... | 12/16/2008 |
| 7436228 | Variable-bandwidth loop filter methods and apparatus Methods and apparatus are provided for varying the bandwidth of a loop filter in a loop circuit (e.g., a phase-locked loop circuit). The loop filter can include first and second resistor circuitries coupled to a capacitor. One of the resistor circuitries can be coup... | 10/14/2008 |
| 7429889 | Control system for programmable filters Control system for programmable filters, master-slave calibration system and fully programmable high precision filter for use in such control system, such filters being provided with a filter input and a filter output including a first, first order low pass filter s... | 09/30/2008 |
| 7425863 | Tuneable filters using operational amplifiers A low pass filter includes a switchable resistor bank, a gain stage, and a capacitor bank. The resistors and capacitors switched into the circuit determine a cutoff frequency of the low pass filter. Frequency programmability may be obtained using the switchable resi... | 09/16/2008 |
| 7423474 | Selectable pole bias line filter A current mirror with selectable filter poles provides a selected low pass filtering function to a DC bias signal generated by the current mirror. Coupled between a first MOSFET and second MOSFET of the current mirror, a low pass filter with selectable filter poles ... | 09/09/2008 |
| 7414461 | Linearization technique for current mode filters A circuit is disclosed that compensates for the non-linearity of a current mode real pole producing circuit used to generate poles and zeros in complex filter circuits. The non-linearity of the prior art is compensated by driving one end of the primary pole producin... | 08/19/2008 |
| 7397226 | Low noise, low power, fast startup, and low drop-out voltage regulator A circuit and method for providing voltage regulation that operates with relatively low noise, low power, fast start up and low dropout. The invention includes a constant voltage reference that is coupled to a reference amplifier which amplifies the reference voltag... | 07/08/2008 |
| 7385439 | Analog switch having a minimized external flow of leakage current and switched capacitor filter incorporating the analog switch An analog switch used in a switched capacitor filter has N-channel and P-channel MOS FETs connected in parallel between input and output switch terminals, with capacitor charge currents being periodically produced from the output terminal. The filter derives an outp... | 06/10/2008 |
| 7375583 | Low noise lowpass filter A differential biquad filter includes positive and negative single ended circuits connected between first and second power supply terminals. Each single ended circuit includes a single input terminal; a transistor having a control terminal, and first and second main... | 05/20/2008 |
| 7365668 | Continuous-time delta-sigma analog digital converter having operational amplifiers The invention concerns a continuous-time delta-sigma analog-digital converter for the conversion of an analog input signal into a digital output signal, comprising an analog filter which filters the analog input signal and at least one externally circuited operation... | 04/29/2008 |
| 7358799 | Switchable high pass configuration and an optical receiver with a switchable high pass configuration The invention relates to a switchable high-pass filter arrangement which has a lower limiting frequency determining the high-pass filter behavior. The arrangement includes a transistor circuit, which has at least one transistor in a common-gate or common-base connec... | 04/15/2008 |
| 7355481 | Amplification circuit and control method of amplification circuit An amplification circuit connected with a lowpass filter, which reduces the time required for compensating the amplification characteristic and starting up at turning on the power supply, and a control method thereof are provided. An amplification circuit 10,... | 04/08/2008 |
| 7355463 | Loop filter integration in phase-locked loops A phase-locked loop and method are disclosed. One method embodiment includes providing a dual-path filter of a phase-locked loop, the dual-path filter consisting of passive components, and summing control signals in the dual-path filter using the passive components.... | 04/08/2008 |
| 7348827 | Apparatus and methods for adjusting performance of programmable logic devices A programmable logic device (PLD) includes mechanisms for adjusting or setting the body bias of one or more transistors. The PLD includes a body-bias generator. The body-bias generator is configured to set a body bias of one or more transistors within the programmab... | 03/25/2008 |
| 7342434 | Semiconductor device including capacitor having decoupling capacity A capacitor has a MOS gate structure in which a gate insulating film is held between a gate terminal and a ground terminal as a dielectric. A switch unit is connected between the gate terminal and a power supply. The ground terminal is connected to a ground. A switc... | 03/11/2008 |
| 7339420 | Method of switching PLL characteristics and PLL circuit A loop filter which is a component of a PLL circuit includes a switching element for switching a capacitance value which connects and disconnects a second capacitive element to a first capacitive element according to a natural angular frequency switching signal, and... | 03/04/2008 |
| 7330171 | Amplifier circuit A signal sampled by a sampling transistor is amplified with low power consumption. A display voltage signal Vsig sampled by the sampling transistor is amplified by an amplifier circuit of this invention. A thin film transistor T1 which functions as a MOS capa... | 02/12/2008 |
| 7327997 | High order trans-impedance filter with a single operational amplifier A trans-impedance filter circuit provided according to an aspect of the present invention contains an operational amplifier, a first resistor, a first capacitor, a second resistor, and a second capacitor. The second capacitor is connected in parallel between the inv... | 02/05/2008 |
| 7283004 | Phase locked loop filter A phase locked loop filter comprising a first capacitor for connecting to a first charge pump path; and a parallel resistor/capacitor circuit for connecting to a second charge pump path with the resistor/capacitor circuit having a second capacitor; wherein the first... | 10/16/2007 |
| 7279962 | Frequency tuning loop for active RC filters A tuning loop which can tune the cut-off frequency of an active RC filter is disclosed. The cut-off frequency is determined by equivalent resistance and equivalent capacitance in an active RC filter, therefore, the tuning loop changes the equivalent resistance to tu... | 10/09/2007 |
| 7274756 | Digital signal receiver operating beyond the -3dB frequency A receiver for digital data connects to a preceding signal path and the digital data has a lower to upper data frequency range. The receiver includes a received signal input terminal connected to a higher frequency gain circuit that shows highest transfer amplitude ... | 09/25/2007 |
