Read-out circuit of image sensor
First Claim
1. A read-out circuit of an image sensor, comprising:
- a correlated double sampling (CDS) block, including;
a plurality of reset capacitors storing inputted reset values of pixels;
a plurality of signal capacitors storing inputted signal values of the pixels;
a plurality of reset driving devices outputting the reset values stored into the reset capacitors;
a plurality of signal driving devices outputting the signal values stored into the signal capacitors; and
a plurality of capacitor equalization devices equalizing electric potential levels of the reset capacitors and the signal capacitors;
a reset line transferring reset value output signals of the CDS block;
a signal line transferring signal value output signals of the CDS block;
a differential amplification unit amplifying a difference between the individual reset value output signal and the individual signal value output signal; and
a line equalization device equalizing electric potential levels of the reset line and the signal line.
5 Assignments
0 Petitions
Accused Products
Abstract
A read-out circuit of an image sensor is provided. The read-out circuit includes: a CDS block, including: a plurality of reset capacitors storing inputted reset values of pixels; a plurality of signal capacitors storing inputted signal values of the pixels; a plurality of reset driving devices outputting the reset values stored into the reset capacitors; a plurality of signal driving devices outputting the signal values stored into the signal capacitors; and a plurality of capacitor equalization devices equalizing electric potential levels of the reset capacitors and the signal capacitors; a reset line transferring reset value output signals of the CDS block; a signal line transferring signal value output signals of the CDS block; a differential amplification unit amplifying a difference between the individual reset value output signal and the individual signal value output signal; and a line equalization device equalizing electric potential levels of the reset line and signal line.
24 Citations
26 Claims
-
1. A read-out circuit of an image sensor, comprising:
-
a correlated double sampling (CDS) block, including;
a plurality of reset capacitors storing inputted reset values of pixels;
a plurality of signal capacitors storing inputted signal values of the pixels;
a plurality of reset driving devices outputting the reset values stored into the reset capacitors;
a plurality of signal driving devices outputting the signal values stored into the signal capacitors; and
a plurality of capacitor equalization devices equalizing electric potential levels of the reset capacitors and the signal capacitors;
a reset line transferring reset value output signals of the CDS block;
a signal line transferring signal value output signals of the CDS block;
a differential amplification unit amplifying a difference between the individual reset value output signal and the individual signal value output signal; and
a line equalization device equalizing electric potential levels of the reset line and the signal line. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
-
-
11. A read-out circuit of an image sensor, comprising:
-
a CDS block, including;
a plurality of reset capacitors receiving reset values of pixels and storing the reset values;
a plurality of signal capacitors receiving signal values of the pixels;
a plurality of reset driving devices outputting the reset values stored into the reset capacitors;
a plurality of signal driving devices outputting the signal values stored into the signal capacitors; and
a plurality of capacitor equalization devices equalizing electric potential levels of the reset capacitors and the signal capacitors;
a reset line transferring reset value output signals of the CDS block;
a signal line transferring signal value output signals of the CDS block; and
a differential amplification unit amplifying a difference between the individual reset value output signal and the individual signal value output signal. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18)
-
-
19. A read-out circuit of an image sensor, comprising:
-
a CDS block storing and outputting reset values and signal values of pixels;
a reset line transferring reset value output signals of the CDS block;
a signal line transferring signal value output signals of the CDS block;
a differential amplification unit amplifying a difference between the individual reset value output signal and the individual signal value output signal; and
a line equalization device equalizing electric potential levels of the reset line and the signal line. - View Dependent Claims (20, 21, 22, 24, 25, 26)
-
-
23. The read-out circuit of 22, wherein the CDS block further includes:
-
a plurality of reset input switches transferring the reset values of the pixels to the corresponding reset capacitors; and
a plurality of signal input switches transferring the signal values of the pixels to the corresponding signal capacitors.
-
Specification