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| Number | Title | Issue Date |
| 8174424 | Image sensing system In general, a method includes comparing a first input signal with a second input signal to produce an output signal. The first input signal corresponds to an amount of light detected by a sensor, and the second input signal corresponds to an aggregated value of the ... | 05/08/2012 |
| 7990304 | Double data rate (DDR) counter, analog-to-digital converter (ADC) using the same, CMOS image sensor using the same and methods in DDR counter, ADC and CMOS image sensor In a double data rate (DDR) counter and counting method used in, for example, an analog-to-digital conversion in, for example, a CMOS image sensor and method, a first stage of the counter generates a least significant bit (LSB) of the value in the counter. The first... | 08/02/2011 |
| 7952510 | Solid-state imaging device, driving method thereof, and camera It is an object of the present invention to provide a solid-state imaging device for enhancing accuracy of AD conversion and active switching of up-counting and down-counting in the asynchronous counter without limiting the AD conversion frequency. The solid-state i... | 05/31/2011 |
| 7859447 | Image processing method, semiconductor device for detecting physical quantity distribution, and electronic apparatus An image processing method for obtaining digital data comprising the steps of obtaining a plurality of image signals under a condition of different accumulation periods as an initial value for a counting operation, comparing, by using digital data for a first image ... | 12/28/2010 |
| 7804437 | Analog-to-digital converter for accumulating reference voltages successively divided by two An analog-to-digital converter includes a ½ powered signal generator configured to generate divided signals by successively dividing a full scale signal by 2 and output one of the divided signals, an accumulator configured to update a reference signal according to ... | 09/28/2010 |
| 7800526 | Data processing method, semiconductor device for detecting physical quantity distribution, and electronic apparatus A data processing apparatus and method is disclosed for obtaining digital data for a plurality of signals to be processed, comprising. The disclosed process includes comparing, by using digital data for a first signal of the plurality of signals, an electric signal ... | 09/21/2010 |
| 7786921 | Data processing method, data processing apparatus, semiconductor device, and electronic apparatus In a solid-state imaging device with an AD converter mounted on the same chip, to enable an efficient product-sum operation while reducing the size of the circuit scale and the number of transmission signal lines. A pixel signal during an n-row readout period is com... | 08/31/2010 |
| 7733262 | Quantizing circuits with variable reference signals Systems, methods, and devices are disclosed, such as an integrated semiconductor device that may include a data location coupled to an electrical conductor, a delta-sigma modulator coupled to the electrical conductor, a counter coupled to an output of the delta-sigm... | 06/08/2010 |
| 7714763 | Circuit and method for preventing bang-bang error, calibration circuit including the circuit, and analog-to-digital converter including the circuit A circuit including a comparing unit for comparing a target voltage with a stepwise-varying tracking voltage, a counting unit for counting a code according to the comparison result of the comparing unit and a control signal generating unit for generating a signal fo... | 05/11/2010 |
| 7683818 | Method and apparatus for AD conversion, semiconductor device for detecting distribution of physical quantity, and electronic apparatus A column analog-to-digital converter having a voltage comparator and a counter is arranged for each a vertical signal line. The voltage comparator compares a pixel signal inputted via the vertical signal line at each row control signal line with a reference voltage,... | 03/23/2010 |
| 7629914 | Counter circuit, AD conversion method, AD converter, semiconductor device for detecting distribution of physical quantities, and electronic apparatus A solid-state image pick up device including a pixel array unit having unit pixels arranged in a matrix pattern. Each unit pixel includes a photoelectric converter. Additionally, the solid-state image pick up device has column signal lines that correspond to the res... | 12/08/2009 |
| 7616146 | A/D conversion circuit, control method thereof, solid-state imaging device, and imaging apparatus An A/D conversion circuit includes: an input capacitance to which an input signal and a reference signal are sequentially applied; an operational amplifier; a first switch connected between the other end of the input capacitance and a first input end of the operatio... | 11/10/2009 |
| 7609195 | On die thermal sensor and method for generating thermal code of ODTS An on die thermal sensor (ODTS) in a memory device includes: a band gap unit for detecting a temperature of the memory device to output a first voltage corresponding to the temperature; and an analog-to-digital converting unit for outputting a digital code having te... | 10/27/2009 |
| 7586431 | Method and apparatus for AD conversion, semiconductor device for detecting distribution of physical quantity, and electronic apparatus A column analog-to-digital converter having a voltage comparator and a counter is arranged for each a vertical signal line. The voltage comparator compares a pixel signal inputted via the vertical signal line at each row control signal line with a reference voltage,... | 09/08/2009 |
| 7532147 | Analog voltage latch An analog voltage latch for use in a controller for controlling a motor equipped electric bicycle, includes a window comparator for comparing an analog voltage latch output and an analog input voltage to produce a comparison result, an S-R latch for producing HIGH o... | 05/12/2009 |
| 7508332 | On die thermal sensor having analog-to-digital converter for use in semiconductor memory device An On Die Thermal Sensor (ODTS) of a semiconductor memory device includes: a temperature detector for detecting an internal temperature of the semiconductor memory device to generate a temperature voltage corresponding to the detected internal temperature; a trackin... | 03/24/2009 |
| 7495597 | Counter circuit, AD conversion method, AD converter, semiconductor device for detecting distribution of physical quantities, and electronic apparatus An asynchronous counter that is capable of switching count mode includes flip-flops, and three-input single-output tri-value switches respectively provided between the adjacent pairs of the flip-flops. The tri-value switches switch among three values, namely, non-in... | 02/24/2009 |
| 7471230 | Analog-to-digital converter and semiconductor device An analog to digital converter comprising a reference signal generator, a comparator, and a counter wherein the reference signal generator is operable to generate a reference for converting an analog signal into a digital signal. The reference signal generator is al... | 12/30/2008 |
| 7436342 | Numerical full well capacity extension for photo sensors with an integration capacitor in the readout circuit using two and four phase charge subtraction A detector circuit having an integration capacitor coupled to an amplifier via a switch matrix and a comparator coupled to the amplifier, the integration capacitor operable in two or more phases, the switch matrix is configured to phase switch the integration capaci... | 10/14/2008 |
| 7417576 | Method and apparatus for detecting an edge A detector comprises an analog-to-digital converter. The analog-to-digital converter comprises an input for an analog receive signal and an output for a digital signal. The detector further comprises an edge detector. The edge detector comprises an input for a digit... | 08/26/2008 |
| 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 voltage to the IADC and obtains a first data value from the IADC. The... | 08/19/2008 |
| 7405688 | Analogue-to-digital converter and method for converting an analogue input signal into a digital information An analogue-to-digital converter comprises a window comparator. The window comparator comprises an input for an analogue input signal and an output for a comparison result indicating a result of a comparison of the analogue input signal with an upper bound and a low... | 07/29/2008 |
| 7382309 | Analog level meter and method of measuring analog signal level An analog level meter and a method of measuring an analog signal level may be provided. The analog level meter may include a comparator, a duty counter, an analog level detector and/or a digital to analog converter (DAC). The comparator may compare a voltage level o... | 06/03/2008 |
| 7382302 | A/D converter with voltage generation circuits An A/D converter has a first voltage generation circuit, a second voltage generation circuit, a comparator, first and second switch circuits connected in series between an input terminal of an analog input voltage and an output terminal of the first voltage generati... | 06/03/2008 |
| 7375672 | Analog-to-digital conversion method, analog-to-digital converter, semiconductor device for detecting distribution of physical quantity, and electronic apparatus In an analog-to-digital conversion method for converting a difference signal component representing a difference between a reference component and a signal component in an analog signal to be processed into digital data, in a first process, a signal corresponding to... | 05/20/2008 |
| 7368904 | Proximity detector A proximity detector includes a fine DAC and a coarse DAC, outputs of which are summed to provide a tracking signal for tracking a magnetic field signal. The proximity detector provides two mode of operation. In a first mode of operation the coarse and fine DACs ope... | 05/06/2008 |
| 7365528 | Method and apparatus of voltage measurement using flying capacitor and switching circuits The present invention is to provide a method and apparatus of voltage measurement with a high resolution. An apparatus of voltage measurement includes: a buffer circuit for separating a voltage between terminals of a capacitor or an equivalent voltage into a first v... | 04/29/2008 |
| 7364355 | Method and apparatus for obtaining a temperature measurement using an InGaAs detector A method of linearizing the output a infrared camera having an InGaAs includes determining the an equivalent black body temperature of an object by utilizing a plurality of calibration constants determined by collecting data from a number of temperatures of the obje... | 04/29/2008 |
| 7345613 | Image processing circuit, imaging circuit, and electronic device An image processing circuit for reducing noise. The image processing circuit includes a CDS circuit for taking a potential difference between a pixel signal at a reset of an image pickup device and a pixel signal after exposure, and an AD conversion circuit. The AD ... | 03/18/2008 |
| 7336212 | Apparatus and methods for measurement of analog voltages in an integrated circuit The present disclosure relates to apparatus and methods for measurement of analog voltages in an integrated circuit. In particular, the apparatus includes an on-chip digital-to-analog converter configured to receive a variable digital input code and output a corresp... | 02/26/2008 |
| 7324037 | Analog to digital converter with interference rejection capability An analog to digital converter (ADC) with interference rejection capability and method thereof are disclosed. The ADC includes a threshold generator, a comparator circuit, a counter and an integrator. By comparing a signal with positive and negative threshold signal... | 01/29/2008 |
| 7315273 | Analog-to-digital conversion method, analog-to-digital converter, semiconductor device for detecting distribution of physical quantity, and electronic apparatus In an analog-to-digital conversion method for converting a difference signal component representing a difference between a reference component and a signal component in an analog signal to be processed into digital data, in a first process, a signal corresponding to... | 01/01/2008 |
| 7304599 | Analog-to-digital converter with reduced power consumption in CMOS image sensor An analog-to-digital converter includes a comparator, a latch, and a bias control unit. The comparator is turned on by an applied bias voltage for comparing an analog voltage with a ramp voltage. The latch activates an end signal when the ramp voltage becomes greate... | 12/04/2007 |
| 7292177 | Counter circuit, AD conversion method, AD converter, semiconductor device for detecting distribution of physical quantities, and electronic apparatus An asynchronous counter that is capable of switching count mode includes flip-flops, and three-input single-output tri-value switches respectively provided between the adjacent pairs of the flip-flops. The tri-value switches switch among three values, namely, non-in... | 11/06/2007 |
| 7277038 | Semiconductor integrated circuit A semiconductor integrated circuit including an A/D converter capable of converting an analog signal accepted through an external terminal into a digital signal. The A/D converter includes: a ladder-type resistor for generating a reference voltage; a set of first op... | 10/02/2007 |
| 7277039 | Semiconductor integrated circuit with A/D converter having a ladder-type resistor A semiconductor integrated circuit including an A/D converter capable of converting an analog signal accepted through an external terminal into a digital signal. The A/D converter includes: a ladder-type resistor for generating a reference voltage; a set of first op... | 10/02/2007 |
| 7277037 | Semiconductor integrated circuit A semiconductor integrated circuit including an A/D converter capable of converting an analog signal accepted through an external terminal into a digital signal. The A/D converter includes: a ladder-type resistor for generating a reference voltage; a set of first op... | 10/02/2007 |
| 7274321 | Analog to digital converter A analog to digital converter, comprising: an input for receiving an input signal to be digitized; a first converter core for performing a first part of an analog to digital conversion, and for outputting a first digital result; a first residue calculator for calcul... | 09/25/2007 |
| 7250880 | Analog to digital converter An analog to digital converter comprising at least two analog to digital conversion engines and a controller for controlling the operation of the analog to digital conversion engines such that during a first phase of an analog to digital conversion process the engin... | 07/31/2007 |
| 7244919 | Semiconductor integrated circuit device having photo detector circuits, processing elements, and comparing circuits which compare the output of a photo detector element with a reference voltage A semiconductor integrated circuit device is provided which has a plurality of photo detector circuits and a plurality of processing elements. Each of the photo detector circuits includes a comparing circuit, which compares an output of a photo detector element with... | 07/17/2007 |
