Quotables
"I watched his countenance closely, to see if he was not deranged ... and I was assured by other senators after he left the room that they had no confidence in it."
U.S. Senator Smith of Indiana ; After seeing Samuel Morse demonstrate the telegraph.
PatentStorm News
Make the Most of Our Site
See this month's Top Inventors and Most Cited Patents.
Stay on top of the latest innovations by subscribing to an RSS feed.
Registered users: Manage your profile.
| Number | Title | Issue Date |
| 6232907 | Polarity shifting flash A/D converter and method An A/D converter which includes a sample-and-hold circuit having an input and an output, a zero-crossing detector having an input coupled to the output of the sample-and-hold circuit and having an output indicative of a change in polarity of an input sign... | 05/15/2001 |
| 6222476 | Architecture to reduce errors due to metastability in analog to digital converters A system and method for reduced metastability errors in an analog-to-digital converter ("ADC") are disclosed. The ADC comprises comparators configured to output a thermometer code and a thermometer-to-binary encoder for converting the thermometer code to ... | 04/24/2001 |
| 6218975 | Interleaved auto-zero analog-to-digital converter with switching noise compensation An interleaved auto-zero analog-to-digital converter includes chopper comparators for comparing an analog input signal to predetermined voltage values. An additional chopper comparator is included for performing the comparison function of a chopper compar... | 04/17/2001 |
| 6198420 | Multiple level quantizer A DC coupled serial data stream receiver system utilizing a switched capacitor based differencing front end which compares the instantaneous value of an analog voltage with respect to its long term minimum value to a series of reference voltages V1 | 03/06/2001 |
| 6198422 | Low-voltage analog-to-digital converter A low-voltage A/D converter is provided which improves resolution by applying a sampling block at input terminal of a comparator to 0~Vdd period. The low-voltage A/D converter includes: data input/output terminals consisting of input terminals for respect... | 03/06/2001 |
| 6198421 | Neural-flash analog-to-digital converter using weighted current similation One embodiment of the present invention provides a flash analog-to-digital converter (ADC) based on a feedforward perceptron. The ADC includes a plurality of N stages to provide N digital signals. The plurality of N stages includes a first stage to provid... | 03/06/2001 |
| 6195031 | Analog-to-digital converter with level converter and level recognition unit and correction memory An analog-to-digital converter circuit for digitalizing a high-frequency signal with large dynamics has a first analog-to-digital converter and a second analog-to-digital converter connected in parallel, a level converter connected to one of the two analo... | 02/27/2001 |
| 6188347 | Analog-to-digital conversion system and method with reduced sparkle codes Analog-to-digital conversion with reduce sparkle codes. An analog-to-digital converter includes a plurality of comparators each coupled to receive an analog input signal, and an adder decoder coupled to receive the outputs of the comparators. Each compara... | 02/13/2001 |
| 6177893 | Parallel processing analog and digital converter In one aspect, the present invention is directed to a converter for converting a signal from a first format to a second format. The converter includes a decomposition section, a converter array operatively coupled to the decomposition section, and a recom... | 01/23/2001 |
| 6172636 | Linearizing structures and methods for adjustable-gain folding amplifiers Structures and methods are provided that linearize and stabilize the gain of adjustable-gain folding amplifiers. Accordingly, these folding amplifiers are suited for use in various compound ADCs where they improve the performance of subsequent folding amp... | 01/09/2001 |
| 6160508 | Method and device for analogue to digital conversion A parallel SC ADC (switched capacitor analog-to-digital converter) includes a passive sampling technique controlled by a global clock phase to reduce the influence of the sampling phase skew. Since it does not require operational amplifiers for sampling, ... | 12/12/2000 |
| 6133864 | Analog-to-digital converter for processing analog signals from a large array of detectors A parallel pipelined analog-to-digital converter for use with chips containing large arrays of detectors is described. In these A/D converters, the degree of parallelism decreases between earlier and later pipeline stages. That is, there are fewer instanc... | 10/17/2000 |
| 6121913 | Electronic system with high speed, low power, A/D converter A method and apparatus for performing analog to digital conversion. A voltage to current converter converts an analog input voltage to an input current. A current reference generates a reference current. A plurality of scaling elements scaled the referenc... | 09/19/2000 |
| 6114982 | Source impedance matching in an analog-to-digital converter An analog-to-digital (A/D) converter for converting an analog signal into a digital signal includes a first resistor ladder coupled between a first reference voltage and a second reference voltage. The A/D converter also includes a second resistor ladder ... | 09/05/2000 |
| 6107949 | Flash analog-to-digital converter with matrix-switched comparators An integrated circuit includes a converter for converting a signal from one form to another, one of the forms being analog and the other form being digital. The converter includes a voltage gradient having a plurality of MSB taps spaced there-along with t... | 08/22/2000 |
| 6101376 | Squelch circuit and methodology for a multi-level quantizer An improved squelch circuit and methodology for a multi-level quantizer employing one or more amplifiers to amplify an input signal at different gains. Comparators coupled to corresponding amplifiers or amplifier stages produce pulses based on comparing t... | 08/08/2000 |
| 6100836 | Analog to digital converter An analog-to-digital converter (ADC) formed on an integrated circuit chip from a plurality of cells includes a differential amplifier having first and second branches. The branches in each cell respectively have first and second transistors respectively r... | 08/08/2000 |
| 6091353 | Bias circuit for flash analog to digital converter circuits A bias circuit for a flash A/D converter having a first bus line and a second bus line includes a voltage reference operatively coupled to an operational amplifier circuit. The bias circuit further includes a first transistor, a second transistor, a first... | 07/18/2000 |
| 6091346 | Multi-flash analog to digital converter using floating voltages A high resolution multi-flash analog-to-digital converter comprised of multiple small resolution full-flash analog-to-digital converters combined in such a manner as to generate a higher resolution digital voltage. The first small resolution analog-to-dig... | 07/18/2000 |
| 6087968 | Analog to digital converter comprising an asynchronous sigma delta modulator and decimating digital filter An analog to digital converter comprises an asynchronous sigma-delta modulator generating an asynchronous duty cycle modulated square wave, sampling means to synchronously sample the asynchronous square wave and a decimating digital filter to convert the ... | 07/11/2000 |
| 6081219 | Power saving arrangement for a flash A/D converter An arrangement for reducing power consumption in a flash A/D converter uses a predictor module to compute the "next" digital output value (i.e., s(n+1)) and then uses this value to regulate the number of individual comparators required to perform an accur... | 06/27/2000 |
| 6072416 | Analog-to-digital converter circuit An analog-to-digital converter circuit, such as a flash-type A/D converter, has a plurality of voltage comparators. Each voltage comparator has first and second input terminals and an output terminal. The voltage comparators are arranged in order of refer... | 06/06/2000 |
| 6064327 | Constant voltage generation circuit A constant voltage generation circuit in which a charging circuit (T1) connected to one side of resistors (LR2 to LR5) rapidly supplies a higher voltage, that is further higher than any voltage generated at each of the resistors (LR2 to LR5), to the outpu... | 05/16/2000 |
| 6037890 | Ultra high speed, low power, flash A/D converter utilizing a current mode regenerative comparator A method and apparatus for performing analog to digital conversion. A voltage to current converter converts an analog input voltage to an input current. A current reference generates a reference current. A plurality of scaling elements scaled the referenc... | 03/14/2000 |
| 6034630 | Analog to digital converter An analog to digital converter, which, by comparing utput signals of a first comparator group with a reference voltage by a second comparator group and setting this reference voltage to a level lower than an intermediate level of output signals of the fir... | 03/07/2000 |
| 6011503 | Half-flash type analog-to-digital converter capable of converting data at high speed A flash type analog-to-digital converter which generates a digital output signal in response to an analog input signal includes: a first comparator having a reference value being half of a level determining range against the input signal and determining w... | 01/04/2000 |
| 6002356 | Power saving flash A/D converter Flash analog-to-digital (A/D) conversion is performed with an n-bit converter using a resistive-divider string in which tap points are taken between each pair of adjacent resistors of the string as one input to each of a respective plurality of 2n | 12/14/1999 |
| 5990817 | A/D conversion device having a programmable transfer characteristic The invention relates to an A/D conversion device intended to supply at the output a digital signal Vout[0:7] resulting from the conversion of an analog input voltage Vin and receiving a control signal CRS used for defining the transfer characteristic of ... | 11/23/1999 |
| 5977898 | Decoding scheme for a dual resistor string DAC A decoding scheme for a dual string DAC which reduces the size of the decoding logic while also reducing the number of switches between the two strings of resistors and also eliminating the need for Op-amps between the coarse and fine resistor strings. Th... | 11/02/1999 |
| 5969659 | Analog to digital converters with extended dynamic range An arrangement for improving the operation of an analog to digital converter (A/D), which can form part of an integrated circuit, the A/D converter being coupled to a reference voltage and having a plurality of input pins associated therewith comprises: a... | 10/19/1999 |
| 5952951 | Chopper comparator and A/D converter A chopper comparator is constructed by connecting current control transistors Q15 to Q17 comprising p-channel MOSFETs between CMOS inverters 3 to 5 and a power source 7 to supply a power voltage VDD . A control signal V | 09/14/1999 |
| 5945935 | A/D converter and A/D conversion method The A/D converter realizes a high-rate and high-precision A/D conversion using amplifier circuits. Each amplifier circuit amplifies a difference between the voltage of an analog signal to be converted and a predetermined reference voltage. Each bank of ho... | 08/31/1999 |
| 5936566 | Auto-reference pseudo-flash analog to digital converter The n-bit A/D converter of the present invention includes a resistor network, n comparators, and (2n -1-n) multiplexers. The resistor network generates a plurality of reference voltages characterized by uniform voltage increments between two fi... | 08/10/1999 |
| 5936437 | Analog-to-digital converter with capacitor network Link capacitors are used to establish connection between joining-points of coupling capacitors and inverters in an inverter chopper comparator array, in order to reduce injected electric charge variation due to feedthrough. Some of the comparators in the ... | 08/10/1999 |
| 5923277 | Reference voltage generating circuit for use in series-parallel A/D converter A series-parallel A/D converter having a plurality of reference resistors, a first comparator section, a second comparator section, groups of switches, and lower-reference voltage lines. The reference resistors divide a full-scale voltage, generating diff... | 07/13/1999 |
| 5889487 | Flash analog-to-digital converter with latching exclusive or gates The number of input latching comparators in a flash analog-to-digital converter is significantly reduced by merging the input latching function into exclusive OR gates used in the converter's decoding section. A latching exclusive OR gate used for this pu... | 03/30/1999 |
| 5877720 | Reconfigurable analog-to-digital converter A reconfigurable analog-to-digital (A/D) converter that produces an N bit output in a first operating mode and an (N+1) bit output in a second operating mode. The reconfigurable A/D converter is especially well-suited for use in a read channel device.... | 03/02/1999 |
| 5877718 | Differential analog-to-digital converter with low power consumption An analog-to-digital (A/D) converter capable of receiving a differential input for improved noise rejection and having two static resistive ladders for reducing power consumption. The resistive ladders are anti-parallel and have a high impedance, each div... | 03/02/1999 |
| 5867116 | Multi-stage interpolating analog-to-digital conversion In a multi-stage, multi-residue interpolating analog-to-digital converter (ADC), which is suitable for pipelined implementation, inputs of at least three amplifiers are "leapfrog" switched to adjacent nodes of a first interpolation ladder having discrete ... | 02/02/1999 |
| 5861829 | High-speed, low power, medium resolution analog-to-digital converter and method of stabilization A full flash analog to digital converter operates on an input voltage with a track/hold circuit coupled to a reference input of each of multiple comparators. Particular track/hold circuits are activated in sequence through a track/hold select circuit, and... | 01/19/1999 |
