Bizarre Patents
Mountable Printable Placard With Headband
A resilient headband in a shape for being mounted on the head of the user. The headband is equipped with a longitudinal slotted member for holding a placard.
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| Number | Title | Issue Date |
| 7564392 | Decoder circuit A decoder circuit that selects a grayscale voltage responsive to digital input includes a first transistor circuit that selects grayscale voltages greater than a certain voltage and a second transistor circuit that selects grayscale voltages less than the certain vo... | 07/21/2009 |
| 7423572 | Digital-to-analog converter For example, in order to convert a 6-bit digital signal into an analog signal, a reference voltage generating circuit for generating 17 reference voltages, a first switch circuit having 19 switch pairs each including a MOS transistor for two reference voltages adjac... | 09/09/2008 |
| 7403146 | Decoder circuit A decoder circuit that selects a grayscale voltage responsive to digital input includes a first transistor circuit that selects grayscale voltages greater than a certain voltage and a second transistor circuit that selects grayscale voltages less than the certain vo... | 07/22/2008 |
| 7397407 | D/A conversion circuit and A/D conversion circuit A D/A conversion circuit for performing D/A conversion at high speeds. The D/A conversion circuit includes a resistor string including a plurality of resistor elements connected between a low-potential power supply and a high-potential power supply. A plurality of f... | 07/08/2008 |
| 7394419 | Decoding circuit for decoding multibit data, and a display apparatus utilizing the same In each of sub-decoding circuits at a first stage provided for a plurality of output candidates arranged adjacently, for selecting corresponding output candidates in accordance with a bit of multibit data for transmission to subsequent stage sub-decoding circuits, u... | 07/01/2008 |
| 7369074 | D/A converter for a digital signal after non-linear A/D conversion, audio signal processing circuit and liquid crystal display device including the same A D/A converter inputted with non-linear conversion digital data such as a digital signal encoded according to a μ-Law system or the like as it is to convert into an analog signal. A D/A converter is of resistor string type, in which a resistance value of each of r... | 05/06/2008 |
| 7353417 | Microcontroller with synchronised analog to digital converter A microcontroller is provided, which includes a control unit (UC), at least one digital to analog converter (DAC) as a peripheral of the said control unit, and a buffer register located between the said control unit and the said converter, receiving data and a first... | 04/01/2008 |
| 7348913 | Arbitrary waveform generator, arbitrary waveform generate method, testing apparatus, and program There is provided an arbitrary waveform generator that generates an arbitrary waveform. The arbitrary waveform generator includes a waveform pattern generating section that generates pattern data showing a pattern of the arbitrary waveform, a digital-analog converti... | 03/25/2008 |
| 7317413 | Multi-channel digital to analog (D/A) conversion A multi-channel digital-to-analog (D/A) conversion system that can produce an analog output (210) from a digital signal (201) using N D/A converters (C1-CN), each with 1/N of the resolution of a single D/A converter used to perform the same D/A ... | 01/08/2008 |
| 7307570 | Method and apparatus to emulate a filter A system, apparatus, method and article to emulate a filter are described. The apparatus may include a digital-to-analog converter having an impulse response emulator, the impulse response emulator to receive multiple digital signals each having a predetermined wave... | 12/11/2007 |
| 7283082 | High-speed, high-resolution voltage output digital-to-analog converter and method A string DAC having 2M string resistors includes a plurality of switches for selectively coupling, according to the decoding of an M-bit MSB subword, the voltage across a string resistor to an interpolation sub-DAC which interpolates it according to the d... | 10/16/2007 |
| 7250882 | High speed data converter testing devices, methods, & systems Devices and methods to test high speed analog-to-digital and digital-to-analog signal converters are provided. According to one embodiment, a testing device can comprise an output, a mixer, and an input. The output can provide a signal, and the mixer can receive the... | 07/31/2007 |
| 7236060 | Electronic pulse generator and oscillator Distributed traveling wave oscillator circuitry is disclosed. The oscillator circuitry includes a signal path, a plurality of active switching means, and a direction promoting means. The signal path is formed from a pair of adjacent conductors and exhibits endless e... | 06/26/2007 |
| 7218180 | Low noise oscillator A low noise oscillator constructed using a rotary traveling wave oscillator. The conductors of the rotary traveling wave oscillator provide at any tap position a pair of oppositely phased oscillations and these oscillations have slightly different phases at position... | 05/15/2007 |
| 7209065 | Rotary flash ADC A system and method for converting an analog signal to a digital signal is disclosed. The system includes a multiphase oscillator preferable a rotary oscillator, a sample and hold circuit, an integrator and a time-to-digital converter. The multiphase oscillator has ... | 04/24/2007 |
| 7161518 | Method and apparatus for driving two-dimensional modulator arrays In one embodiment, a micro electromechanical system (MEMS) driver circuit receives a pulse-width modulated (PWM) signal and uses it to control a voltage at a MEMS cell. The driver circuit further includes a current source, a capacitor, and a reset circuit that can d... | 01/09/2007 |
| 7129877 | Digital-to-analog converter with switched capacitor network A digital-to-analog converter generates a monotonic sequence of reference voltages and selects an arbitrary pair of reference voltages, adjacent in the monotonic sequence, according to digital input. A switching network charges a capacitor according to the differenc... | 10/31/2006 |
| 7089069 | Method and apparatus for reconstruction of soundwaves from digital signals Each of a plurality of speaklets (MEMS membranes) produces a stream of clicks (discrete pulses of acoustic energy) that are summed to generate the desired soundwave. The speaklets are selected to be energized based on the value of a digital signal. The greater the s... | 08/08/2006 |
| 7064591 | Coarse tuning for fractional-N synthesizers An improved coarse tuning process for fractional-N frequency synthesizers is provided. In general, a coarse tuning circuit controls a phase lock loop (PLL) of a frequency synthesizer such that the phase lock loop operates in an integer division mode during coarse tu... | 06/20/2006 |
| 7049872 | Use of analog-valued floating-gate transistors to match the electrical characteristics of interleaved and pipelined circuits Methods of and apparatuses for matching the signal delay, clock timing, frequency response, gain, offset, and/or transfer function of signal pathways in electrical circuits such as, for example, time-interleaved and pipelined circuits using analog-valued floating-ga... | 05/23/2006 |
| 7023282 | Coarse tuning for fractional-N synthesizers having reduced period comparison error An improved coarse tuning process for fractional-N frequency synthesizers is provided. In general, a coarse tuning circuit controls a phase lock loop (PLL) of a frequency synthesizer. During coarse tuning, a reference signal used to control an output frequency of th... | 04/04/2006 |
| 7003049 | Fractional-N digital modulation with analog IQ interface Digital I and Q (NRZ) data streams are generated by specially configured conversion circuits, the outputs of which are applied to a F-N synthesizer to modulate the synthesizer. All illustrative conversion circuit employs a system of comparators to detect the state o... | 02/21/2006 |
| 6933873 | PWM-based measurement interface for a micro-machined electrostatic actuator Methods and apparatus for varying and measuring the position of a micromachined electrostatic actuator using a pulse width modulated (PWM) pulse train are disclosed. One or more voltage pulses are applied to the actuator. In each of the pulses, a voltage changes fro... | 08/23/2005 |
| 6888486 | Apparatus for producing a natural electromagnetic alternating field close to the body An apparatus for producing a natural electromagnetic alternating field close to a user's body. The natural electromagnetic alternating field is similar to an area of pleasant weather (Sferics), to compensate for electrical stress acting on a user. The field can also... | 05/03/2005 |
| 6885329 | Signal generation using DAC having selectively switched registers storing output values A signal generator (1) for generating a square waveform analog voltage output signal comprises an on-chip DAC (12) which outputs the analog voltage signal on an output terminal (5). On-chip first and second programmable registers (9,10) s... | 04/26/2005 |
| 6867721 | Spectral shaping dynamic encoder for a DAC A tree-structured dynamic encoder generates an N-bit encoder output word in response to each encoder input word of a sequence of encoder input words, such that the number of encoder output word bits of value 1 equals a value of the encoder input word and such that p... | 03/15/2005 |
| 6830302 | Waveform generating circuit, inkjet head driving circuit and inkjet recording device An inkjet head driving circuit driving piezoelectric actuators 21 for ink ejection provided on an inkjet head H includes one D/A converter 62 that converts a digital signal into an analog voltage and outputs the analog voltage, and a waveform generatin... | 12/14/2004 |
| 6762705 | Controlled drive circuit for an analog driven power semiconductor A controlled drive circuit for an analog controlled power semiconductor includes a digitally operating logic module, which has a control input receiving control signals from an A/D converter and a control output supplying processed control signals to a D/A module th... | 07/13/2004 |
| 6733099 | Waveform generating circuit, inkjet head driving circuit and inkjet recording device An inkjet head driving circuit driving piezoelectric actuators 21 for ink ejection provided on an inkjet head H is provided with an analog switch 71 (72) whose input can be switched between the output voltage of a D/A converter 62 (63 | 05/11/2004 |
| 6674383 | PWM-based measurement interface for a micro-machined electrostatic actuator Methods and apparatus for varying and measuring the position of a micromachined electrostatic actuator using a pulse width modulated (PWM) pulse train are disclosed. One or more voltage pulses are applied to the actuator. In each of the pulses, a voltage ... | 01/06/2004 |
| 6404371 | Waveform generator and testing device A waveform generator 30 for generating a desired waveform includes a plurality of rectangular wave generators (40a to 40n) for generating a plurality of rectangular waves and a waveform synthesizing unit 42 for synthesizing the rectangular waves to genera... | 06/11/2002 |
| 6344815 | Digital-to-analog converter A D/A converter of low distortion factor includes a plurality of voltage dividing resistances formed on a P-type semiconductor substrate and connected in series with each other between power source voltage and ground. One of plural N-channel MOS transisto... | 02/05/2002 |
| 6313777 | Binary waveform shaping apparatus The present disclosure discloses an apparatus for generating a shaped waveform derived from a binary input signal. The apparatus receives a binary input signal and a sample clock signal. The sample clock signal changes the state of an up/down counter. The... | 11/06/2001 |
| 6310569 | Skewless differential switching scheme for current-mode digital-to-analog converters A skewless differential switching circuit uses skewless switching elements to convert complementary signals with skew into complementary output signals with minimal time skew between the output signals and with equalized rise and fall times of the output ... | 10/30/2001 |
| 6275179 | Digital to analog converter using a current matrix system A first current cell group of an digital-to-analog converter has a first set of current cells which individually turn on and off in response to respectively input digital signals. A second current cell group of the analog-to-digital converter has a second... | 08/14/2001 |
| 6218977 | Methods and apparatus for distributing mismatched error associated with data converter elements A circuit for implementing a first order noise shaping apparatus for use in data converters employing thermometer-code based elements is disclosed. Raw thermometer code is rotated by up to four columns of shifters such that the code is rotated up to 15 po... | 04/17/2001 |
| 5933107 | Method and device to provide a high-performance digital-to-analog conversion architecture High-speed and high accuracy digital-to-analog (D/A) converters find many applications in signal processing. For wideband telecommunication systems, there is a strong demand on high-performance D/A converters. With the design of the present invention it i... | 08/03/1999 |
| 5739782 | Resistance ladder, D/A converter and A/D converter A D/A converter arranged to improve the resolution by changing the number of resistors to be interposed between a resistance ladder, from which a divided voltage between positive and negative voltage sources is taken out, and the positive and negative vol... | 04/14/1998 |
| 5708434 | Resistor string digital/analog converter with resetting switches In a digital/analog (D/A) converter, a plurality of resistors are connected in series between first and second power supply voltage terminals, and a plurality of switches are arranged in a tree configuration between first nodes of the resistors and an out... | 01/13/1998 |
| 5684482 | Spectral shaping of circuit errors in digital-to-analog converters A general digital-to-analog (DAC) topology spectrally shapes the DAC conversion noise caused by analog circuit mismatches. In particular, highly practical first-order and second-order noise-shaping DACs are special cases of a general topology. The topolog... | 11/04/1997 |
