摘要:
A solid state image sensor and an image sensing apparatus incorporated with the solid state image sensor include: pixel arrays each provided with pixels, and an accumulating section e.g. a capacitor CX which sums up and accumulates signal charges obtained by exposure of an object with respect to a corresponding color at different timings when the signal charges are obtained by the pixels of each of the pixel arrays. A reset noise of a converting floating diffusion is outputted after the converting floating diffusion is reset. Thereafter, a summation of the reset noise, and the signal charges accumulated in the accumulating section is outputted.
摘要:
A trace control unit 61 traces photoelectric conversion characteristics of dummy pixels G2 by varying a current value outputted from constant current sources Id. The constant current sources Id are provided common to respective rows in a dummy pixel section 12 and output a current value according to a setting signal outputted from the trace control unit 61. At this point, the trace control unit 61 instructs a vertical scan circuit 2 to turn off a switch ISW during a predetermined read period in which a read circuit 3 reads pixel signals from the dummy pixels G2.
摘要:
A solid state image sensor and an image sensing apparatus incorporated with the solid state image sensor include: pixel arrays each provided with pixels, and an accumulating section e.g. a capacitor CX which sums up and accumulates signal charges obtained by exposure of an object with respect to a corresponding color at different timings when the signal charges are obtained by the pixels of each of the pixel arrays. A reset noise of a converting floating diffusion is outputted after the converting floating diffusion is reset. Thereafter, a summation of the reset noise, and the signal charges accumulated in the accumulating section is outputted.
摘要:
An object of the present invention is to provide a solid-state image sensing device configured to change a bias voltage given to the photoelectric converting section at the time of resetting so that an operative condition of the photoelectric converting section after the resetting can be maintained a constant condition regardless of an amount of the incident light. To achieve the object, an MOS transistor T5 is provided. The drain of the MOS transistor T5 is connected with a gate and a drain of an MOS transistor T2 and the source of the MOS transistor T5configured to be applied a DC voltage VRS. Here, a signal Φ V is given, an MOS transistor T4is turned on, and image data is output. A signal Φ RS is given and the MOS transistor T5 is turned on. As a result, a gate voltage Vg of the MOS transistor T2 is maintained as a constant voltage value. Then, a reset operation for pixels is stared.
摘要:
To provide an image pickup device and an image pickup apparatus which are equipped with a linear-log sensor which can cancel variations between pixels in an inflection point caused by variations in a threshold of the transistors constituting a logarithmic conversion circuit while using a circuit constitution similar to a pixel circuit of an image pickup device having only an ordinary linear characteristic. When the photoelectric charge accumulated in a photoelectric conversion element is removed, a charge removing transistor is controlled such that the potential of the channel of the charge removing transistor is set to be higher than the minimum potential of the photoelectric conversion element.
摘要:
In order to provide a solid state image pickup device in which an offset voltage in an image signal from which a noise signal is removed is made to be low, when an image pickup operation is performed while the MOS transistor T1 is ON, after a signal φVD with a value Vh is integrated by a capacitor C, the signal φVD is Vm (Vm
摘要:
A database obtained based on the photoelectric conversion characteristics for R and G signals and a database obtained based on the photoelectric conversion characteristics for G and B signals are stored in LUTs respectively. Signal value calculators read out the databases from the LUTs respectively and perform white balance processing on the R and B signals respectively.
摘要:
In a solid-state image sensing device, a method for driving the solid-state image sensing device, and an image sensing system incorporated with the solid-state image sensing device of the invention, pixel signals having two or more different photoelectric conversion characteristics to be outputted from a pixel section are amplified by using an analog gain with respect to each of the photoelectric conversion characteristics for outputting the amplified pixel signals. This enables to reproduce an image having a wide dynamic range while suppressing lowering of the frame rate.
摘要:
Provided is a solid-state imaging device comprising a plurality of pixel circuits GC having photoelectric conversion characteristics including linear characteristics and logarithmic characteristics on either side of an inflection point. The pixel circuits GC each include a photoelectric conversion element PD which accumulates a signal charge by exposing a subject, and a floating diffusion FD which converts the signal charge accumulated by the photoelectric conversion element PD into a voltage signal. The floating diffusion FD is set to have an operating charge that is smaller than a saturation charge of the photoelectric conversion element PD.
摘要:
To provide an image pickup device and an image pickup apparatus which are equipped with a linear-log sensor which can cancel variations between pixels in an inflection point caused by variations in a threshold of the transistors constituting a logarithmic conversion circuit while using a circuit constitution similar to a pixel circuit of an image pickup device having only an ordinary linear characteristic. When the photoelectric charge accumulated in a photoelectric conversion element is removed, a charge removing transistor is controlled such that the potential of the channel of the charge removing transistor is set to be higher than the minimum potential of the photoelectric conversion element.