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7746521 |
Analog-to-digital conversion in CMOS image sensor
An analog-to-digital converter in an image sensor is implemented with a plurality of comparator units. Each comparator unit has a respective capacitor array and respective switches integrated...
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7733250 |
Microcontroller having in-situ autocalibrated integrating analog-to-digital converter (IADC)
A microcontroller has an integrating analog-to-digital converter (IADC) with an in-situ autocalibrating functionality. On-chip autocalibrating circuitry supplies a first predetermined analog input...
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7467036 |
In-vehicle electronic control unit
A first control circuit portion carries out input/output control in cooperation with a microprocessor, a program memory, and a RAM memory. A second control circuit portion is in cooperation with...
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7414553 |
Microcontroller having in-situ autocalibrated integrating analog-to-digital converter (IADC)
A microcontroller has an integrating analog-to-digital converter (IADC) with an in-situ autocalibrating functionality. On-chip autocalibrating circuitry supplies a first predetermined analog input...
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7379011 |
Lossless nonlinear analog gain controller in image sensor and manufacturing method thereof
An image sensor comprises an active pixel sensor (APS) array, a first analog-to-digital converter (ADC), and a ramp signal generator. The APS array has includes a plurality of pixels of arranged in...
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7064694 |
Multi-cycle, multi-slope analog to digital converter
A multi-cycle, multi-slope analog to digital converter overlaps charge and discharge periods to reduce latency to the end of the measurement following a sampling window. Additionally, charging and...
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6850178 |
Analog-to-digital conversion method and device
An analog-to-digital conversion device is provided that uses pulse delay circuits to convert an input voltage into numerical data and offers a high resolution in analog-to-digital conversion or a...
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6661359 |
Device and method for generating synchronous numeric signals
A device for generating synchronous numeric signals, including a reference generating device supplying a reference signal and a first timing signal, both having a reference frequency; and a timed...
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6636575 |
Cascading PLL units for achieving rapid synchronization between digital communications systems
A clock synchronization system for synchronizing a first communications device and a second communications device to enable digital communication there between. A first device generates a first...
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6535156 |
Method and apparatus for a folding analog-to-digital converter (ADC) having a coarse decoder with reduced complexity
A method that correlates a course analog to digital converter (ADC) output value against a folded fine ADC transfer curve slope value to determine an ADC circuit region. The folded fine ADC has a...
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6492929 |
Analogue to digital converter and method of analogue to digital conversion with non-uniform sampling
An analogue to digital converter generating at least two threshold levels and a comparator for comparing each of the levels with the input signal and generating a primary digital output signal to...
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6285310 |
Integrating analog/digital converter
An analog/digital converter including an amplifier (1) wired as an integrator, a comparator (2) electrically downstream from the integrator, a time counter (6) which continually counts the pulses...
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5781142 |
Method and apparatus for converting an analog measurement signal to a digital signal having reduced conversion error
In a measurement device, a detector output signal indicative of a condition magnitude, e.g., radiation, pressure, temperature, etc, and a ramp signal are added, and the resulting analog summation...
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5565869 |
Multiple slope analog-to-digital converter having increased linearity
A multiple slope integrating analog-to-digital converter (ADC) includes an integrator and a comparator in which an input voltage to be measured is applied to a summing node at the input of the...
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RE34899 |
Analog to digital conversion with charge balanced voltage to frequency converter having polarity responsive offset
A bipolar analog voltage is converted into a digital signal by sensing the polarity of the voltage and selectively supplying a bias voltage to an analog-to-digital converter, which can preferably...
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RE34428 |
Analog-to-digital converter with offset voltage polarity inversion
There is provided according to the invention a method and apparatus for eliminating or minimizing the error due to amplifier offset or drift error in an integrating dual slope analog-to-digital...
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5022052 |
Analog signal binary transmission system using slope detection
A system for transmitting an analog signal comprises converting the input analog signal to a binary signal by detecting the change in sign of the slope of the analog signal and generating a binary...
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5019817 |
Analogue-to-digital converter
A multiple ramp analogue-to-digital converter comprises an integrator connected to receive and integrate an analogue input signal to be converted, and an opposing coarse reference signal. Instead...
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4573037 |
Analog-to digital converter and method
A system and method is provided for producing digital signals proportional to selected parameters of an input signal supplied to a modulator. The modulated output of the modulator is supplied to a...
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4357600 |
Multislope converter and conversion technique
A multislope A/D converter is presented which employs a multislope integration technique enabling the use of a single comparator to detect polarity changes in the integrator output voltage. The A/D...
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4309692 |
Integrating analog-to-digital converter
An integrating analog-to-digital converter for producing a digital output signal representing the value of an analog input signal which may have either a positive or negative polarity. The...
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4195283 |
Method for converting an analog voltage to a digital value free from conversion errors, and an integrating type analog-to-digital converter capable of eliminating conversion errors
An integrating type analog-to-digital converter is provided which finds in the first conversion cycle an analog-to-digital conversion value including a possible conversion error resulting from...
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RE29992 |
Integrating analog-to-digital converter having digitally-derived offset error compensation and bipolar operation without zero discontinuity
An analog-to-digital converter of the ramp-integrator type utilizing a special technique to reduce errors due to offset voltages. The integrator first is ramped up and then back to a reference...
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4081800 |
Analog-to-digital converter
Disclosed is an analog-to-digital converter comprising an analog switch for selecting one of analog input voltage, and first and second different reference potentials; an integrator including at...
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3943506 |
Multiple ramp digitisers
This invention relates to electronic analogue to digital converters of the integrating type wherein a capacitor is successively charged by an input signal and discharged by a reference signal, the...
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3942174 |
Bipolar multiple ramp digitisers
Electronic analogue to digital converters of the integrating type wherein a capacitor is successively charged by an input signal and discharged by a reference signal, the time required for...
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3872466 |
Integrating analog-to-digital converter having digitally-derived offset error compensation and bipolar operation without zero discontinuity
An analog-to-digital converter of the ramp-integrator type utilizing a special technique to reduce errors due to offset voltages. The integrator first is ramped up and then back to a reference...
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3833902 |
INTEGRATING A-D CONVERSION SYSTEM
An integrating A-D conversion system which is adapted to provide an analog input voltage in the form of a binary number and comprises the steps of (1) positively integrating a positive analog input...
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3737893 |
BIPOLAR CONVERSION ANALOG-TO-DIGITAL CONVERTER
Bipolar analog input signals are tested for apparent polarity, and depending on the polarity indication, the analog signal is either inverted or not inverted and resulting input signal is combined...
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3733600 |
ANALOG-TO-DIGITAL CONVERTER CIRCUITS
Time delays associated with switching controls of analog-to-digital converter circuits permit switching transients to be blocked from reducing conversion accuracy. The time delays allow switching...
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3048784 |
Binary input-a. c. wave output selector using bipolar generator, integrator, and low pass filter
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