CMOSIS NV Patent applications |
Patent application number | Title | Published |
20140239161 | Pixel Array With Global Shutter - A pixel comprises a pinned photodiode for generating charges in response to incident radiation and a sense node. A transfer gate is positioned between the pinned photodiode and the sense node for controlling transfer of charges to the sense node. A reset switch is connected to the sense node for resetting the sense node to a predetermined voltage. A first buffer amplifier has an input connected to the sense node. A sample stage is connected to the output of the first buffer amplifier and is operable to sample a value of the sense node. A second buffer amplifier has an input connected to the sample stage. | 08-28-2014 |
20140203956 | ANALOG-TO-DIGITAL CONVERSION IN PIXEL ARRAYS - An analog-to-digital converter for generating an output digital value equivalent to the difference between a first analog signal level (Vres) and a second analog signal level (Vsig) comprises at least one input for receiving the first analog signal level and the second analog signal level, an input for receiving a ramp signal and an input for receiving at least one clock signal. A set of N counters, where N≧2, are arranged to use N clock signals which are offset in phase from one another. A control stage is arranged to enable the N counters based on a comparison of the ramp signal with the first analog signal level (Vres) and the second analog signal level (Vsig). An output stage is arranged to output the digital value which is a function of values accumulated by the N counters during a period when they are enabled. | 07-24-2014 |
20140145068 | PIXEL ARRAY - A pixel array for imaging comprises an array of pixels of a first pixel type and a second pixel type. Each pixel of the first pixel type comprises a first photo-sensitive element having a first area. Each pixel of the second pixel type comprises a second photo-sensitive element and a third photo-sensitive element. The second photo-sensitive element has a second area, which is smaller than the first area. Only the second photo-sensitive element in the pixel of the second pixel type is connected to a readout circuit. The third photo-sensitive element is connected to a charge drain via a permanent connection or a switchable connection. Outputs of the second photo-sensitive elements can be used to perform phase detect autofocussing. | 05-29-2014 |
20120175499 | PIXEL ARRAY WITH GLOBAL SHUTTER - A pixel includes a photo-sensitive element for generating charges in response to incident radiation. A transfer gate is positioned between the photo-sensitive element and a sense node for controlling transfer of charges to the sense node. A reset switch is connected to the sense node for resetting the sense node to a predetermined voltage. A first buffer amplifier has an input connected to the sense node and an output connected to a sample stage operable to sample a value of the sense node. A second buffer amplifier has an input connected to the sample stage. Control circuitry operates the reset switch and causes the sample stage to sample the sense node while the photo-sensitive element is exposed to radiation. An array of pixels is synchronously exposed to radiation. Sampled values for a first exposure period can be read while the photo-sensitive element is exposed for a second exposure period. | 07-12-2012 |
20110205100 | ANALOG-TO-DIGITAL CONVERSION IN PIXEL ARRAYS - An analog-to-digital converter (ADC) generates an output digital value equivalent to the difference between two analog signal values. The ADC | 08-25-2011 |