A system of reducing power consumption in and active pixels sensor. The sensor is broken into different blocks, and each of the blocks is individually optimized. The optimization may include minimizing the parasitic capacitance on the readout bus, turning off biases when not in use, and operating in a way that minimizes static power consumption of different elements such as A/D converters.
In-Pixel Analog Memory With Non-Destructive Read Sense Circuit For High Dynamic Range Global Shutter Pixel Operation
An imaging device having pixels that store charge from a photosensor under at least one storage gate during a sampling period. A driver used to operate the at least one storage gate, senses how much charge was transferred to the storage gate and sets a flag in an analog memory (e. g. , stores a voltage in a floating diffusion region) based on the amount of sensed charge. The sensed charge is used to determine an integration time for the pixel.
Method And Apparatus Providing Pixel Storage Gate Charge Sensing For Electronic Stabilization In Imagers
An imaging device that stores charge from a photosensor under at least one storage gate. A driver used to operate the at least one storage gate, senses how much charge was transferred to the storage gate. The sensed charge is used to obtain at least one signature of the image scene. The at least one signature may then be used for processing such as e. g. , motion detection, auto-exposure, and auto-white balancing.
Skimmed Charge Capture And Charge Packet Removal For Increased Effective Pixel Photosensor Full Well Capacity
An imaging device having pixels that store charge from a photosensor under at least one storage gate during a sampling period. A driver used to operate the at least one storage gate, estimates how much charge in the pixel exceeds a predetermined limit during a non-destructive pixel sensing operation. A specific voltage is stored on the pixel's floating diffusion region to flag how many times the pixel exceeded the limit. The final pixel signal and the stored information is readout at the end of integration period to create a sum that represents the pixel's final signal value.
Method And Apparatus Providing Pixel Storage Gate Charge Sensing For Electronic Stabilization In Imagers
An imaging device that stores charge from a photosensor under at least one storage gate. A driver used to operate the at least one storage gate, senses how much charge was transferred to the storage gate. The sensed charge is used to obtain at least one signature of the image scene. The at least one signature may then be used for processing such as e. g. , motion detection, auto-exposure, and auto-white balancing.
Skimmed Charge Capture And Charge Packet Removal For Increased Effective Pixel Photosensor Full Well Capacity
An imaging device having pixels that store charge from a photosensor under at least one storage gate during a sampling period. A driver used to operate the at least one storage gate, estimates how much charge in the pixel exceeds a predetermined limit during a non-destructive pixel sensing operation. A specific voltage is stored on the pixel's floating diffusion region to flag how many times the pixel exceeded the limit. The final pixel signal and the stored information is readout at the end of integration period to create a sum that represents the pixel's final signal value.
Method And Apparatus Providing Pixel Storage Gate Charge Sensing For Electronic Stabilization In Imagers
An imaging device that stores charge from a photosensor under at least one storage gate. A driver used to operate the at least one storage gate, senses how much charge was transferred to the storage gate. The sensed charge is used to obtain at least one signature of the image scene. The at least one signature may then be used for processing such as e. g. , motion detection, auto-exposure, and auto-white balancing.
Bob Gove - Los Gatos CA, US Sandor Barna - Pasadena CA, US Siri Eikedal - Los Angeles CA, US Scott Smith - Los Angeles CA, US Mike Malone - San Jose CA, US Roger Panicacci - Los Angeles CA, US
International Classification:
H04N005/217
US Classification:
348241000
Abstract:
An imager having special light shielded, optically black pixels in each row of the imager's pixel array. Ideally, the optically black pixels should only output black pixel and reset signals. Since the optically black pixels of each row experience the same row-wise noise as the active pixels in the associated row, the optically black signals are used as reference signals to cancel out the row-wise noise, from reset and pixel signals, seen in a particular row.
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