Solid-state image sensor and camera system
A solid-state image and sensor technology, which is applied in the field of camera systems, can solve problems such as noise generation, and achieve the effects of suppressing the increase in circuit area, reducing AD converter noise, and increasing frame rate
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[0037] Embodiments of the present invention will be described below with reference to the accompanying drawings. It will be described as follows.
[0038] 1. Overall example structure of solid-state image sensor
[0039] 2. Example structure of comparator
[0040] 3. CDS considerations
[0041] 4. Comparator operation
[0042] 5. Modification example of comparator
[0043] 6. Example structure of camera system
[0044]
[0045] figure 1 is a block diagram illustrating an example structure of a column-parallel ADC solid-state image sensor (ie, a CMOS image sensor) according to an embodiment of the present invention. figure 2 is a more detailed explanation figure 1 A block diagram of an ADC bank in a column-parallel ADC solid-state image sensor (ie, a CMOS image sensor) is shown.
[0046] like figure 1 and 2 As shown, the solid-state image sensor 100 includes a pixel unit 110 constituting an imaging module, a vertical scanning circuit 120 , a horizontal readout scanni...
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