Abstract: A method and a device having amplification and noise reduction capabilities, the device may include (a) an amplifier; (b) an input circuit that includes multiple sampling circuits, (c) an error capacitor that is arranged to be charged by the amplifier, during a noise integration period, to an error voltage that is indicative of noise generated as a result of a sampling of first and second signals; and (d) a feedback circuit that is arranged to provide to the second input of the amplifier and in proximity to a beginning of second phase of operation, a feedback signal that represents the error voltage and thereby at least partially compensate for the noise.

Abstract: A storage system, a non-transitory computer readable medium and a method for pre-fetching. The method may include presenting, by a storage system and to at least one host computer, a logical address space; determining, by a fetch module, to fetch a certain data portion from a data storage device to a cache memory of the storage system; determining, by a pre-fetch module, whether to pre-fetch at least one additional data portion from at least one data storage device to the cache memory based upon at least one characteristic of a mapping tree that maps one or more contiguous ranges of addresses related to the logical address space and one or more contiguous ranges of addresses related to the physical address space; and pre-fetching the at least one additional data portions if it is determined to pre-fetch the at least one additional data portions.

Abstract: A method for performing a color based white balance of a digital image, the method includes: generating or receiving multiple chromaticity value pairs of multiple pixel areas of the digital image; finding selected candidates; wherein a selected candidate represents a pixel area and has a chromaticity value pair that falls within at least one color gamut out of a group of color gamut of different colors; wherein the different colors comprise at least one color that differs from gray; calculating at least one white balance compensation parameter in response to pixel information of pixels areas that have selected chromaticity values; and providing a compensated digital image by applying at least one white balance compensated image.

Abstract: A method for performing a color gamut based white balancing of a digital image, the method includes: determining at least one filtering parameter based upon a relationship between candidates and color gamuts that are associated with different illumination conditions; wherein each candidate represents a pixel area; selecting selected candidates by filtering the candidates; wherein the filtering is responsive to at least one filtering parameter; calculating at least one white balance compensation parameter in response to pixel information of the selected pixel areas; and providing a compensated digital image by applying at least one white balance compensated parameter.

Abstract: A method for writing to a pixel, the method includes: activating an input transistor and a second transistor; wherein the second transistor is coupled to a second node and the input transistor is coupled between the second node and a photo-detector; inactivating the second transistor; compensating for second node voltage change resulting from the inactivating of the second transistor by providing a feedback signal to a pixel node that is capacitively coupled to the second node via at least one pixel capacitance; repeating, until a control criterion is fulfilled, the stages of: inactivating the input transistor, and measuring a pixel output signal; and operating the input transistor in a weakly conductive mode and providing to the pixel a feedback signal that is responsive to a result of the measurement of the pixel output signal.

Abstract: A method for reading a pixel, the method includes: (i) generating a first signal responsive to light sensed by the pixel during a first exposure period; (ii) comparing a first threshold to a first value of the first signal; (iii) writing a second value to the pixel; wherein the second value equals the first threshold if the first value exceeds the first threshold; wherein the second value equals the first value is the first signal is below the first threshold; (iv) generating a third signal responsive to the second value and to light sensed by the pixel during a second exposure period; (v) reading the third signal; and (vi) calculating a digital detection signal in response to a value of the third signal and in response to a first threshold.

Abstract: A device that includes a pixel array, an interfacing circuit and a sample and hold circuit. The interfacing circuit directs to at least one pixel of the pixel array a sampled voltage that is outputted from the sample and hold circuit. The sample and hold circuit includes an NMOS transistor, a bootstrap circuit, a capacitor, sample phase switches and hold phase switches. During the sample phase the source of the NMOS transistor receives the input voltage; the gate of the NMIS transistor receives, from the bootstrap circuit a gate voltage that exceeds a supply voltage and a capacitor of the sample and hold circuit is charged to the input voltage to provide the sampled voltage. During a hold phase the capacitor stores the sampled voltage; the gate, source and drain of the NMOS transistor are maintained at the same potential and the source of the NMOS transistor is disconnected from an input port through which the input voltage was provided.

Abstract: A method for performing white balancing of a digital image, the method includes: generating or receiving multiple candidates, each candidate represents a pixel area of the digital image; applying multiple white balancing estimation processes on the candidates to provide multiple digital image imbalance estimations; wherein a first white balancing estimation process differs from a second white balancing estimation process by its inherent reliability; calculating at least one white balancing compensation parameter in response to at least two digital image imbalance estimations; and providing a compensated digital image by applying at least one white balancing compensation image.