Image sensor and driving method therefor
AssigneesRayence Co., Ltd., VATECH EWOO Holdings Co., Ltd.
InventorJo Seong Yim
Life of this patent
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Abstract
The objective of the present invention is to embody a convenient and reliable image sensor of an auto trigger scheme. The present invention provides a driving method for an image sensor in which pixels are arranged in a matrix form along row lines and column lines and which has a waiting mode and an image obtaining mode, the driving method for an image sensor comprising the steps of: when sequentially selecting a row line, applying a gate signal, and reading out a data signal for each frame in the waiting mode, calculating a variation between the data signal of the currently selected row line and the data signal of the same row line in the previous frame; and if the variation is greater than or equal to a threshold value, determining that light has been radiated.
Claims13
A method for driving an image sensor, the method being configured to drive an image sensor in which pixels are arranged in a matrix form along row lines and column lines, and which has a standby mode and an image acquisition mode, the method comprising:
- when row lines are sequentially selected in each frame in the standby mode, gate signals are applied to the row lines and data signals are read, calculating variation between data signals in a currently selected row line for a current frame and data signals in an identical row line for a previous frame, determining that light has been irradiated if the variation is equal to or greater than a threshold, and disabling output of gate signals to remaining row lines subsequent to the currently selected row line for the current frame if it is determined that light has been irradiated.
A method for driving an image sensor, the method being configured to drive an image sensor in which pixels are arranged in a matrix form along row lines and column lines, and which has a standby mode and an image acquisition mode, the method comprising:
- when row lines are sequentially selected in each frame in the standby mode, gate signals are applied to the row lines and data signals are read, calculating variation between data signals in a currently selected row line for a current frame and data signals in an identical row line for a previous frame, and determining that light has been irradiated if the variation is equal to or greater than a threshold,
- wherein the image sensor further includes a stabilization mode, and the image sensor repeatedly performs operations of the standby mode, operations of the image acquisition mode, and operations of the stabilization mode in order.
An image sensor, including a standby mode and an image acquisition mode, comprising:
- a photoelectric conversion panel in which pixels are arranged in a matrix form along row lines and column lines;
- a gate driving circuit for sequentially selecting the row lines in each frame, and applying gate signals to the row lines;
- a data driving circuit for reading data signals from the selected row lines;
- and
- a light irradiation determination unit for calculating variation between data signals in a selected row line in a current frame in the standby mode and data signals in an identical row line in a previous frame, determining that light has been irradiated when the variation is equal to or greater than a threshold, and disabling output of gate signals to remaining row lines subsequent to the currently selected row line in the current frame if it is determined that light has been irradiated.
An image sensor, including a standby mode and an image acquisition mode, the image sensor comprising:
- a photoelectric conversion panel in which pixels are arranged in a matrix form along row lines and column lines;
- a gate driving circuit for sequentially selecting the row lines in each frame and apply gate signals to the row lines;
- a data driving circuit for reading data signals from the selected row lines;
- and
- a light irradiation determination unit for calculating variation between data signals in a selected row line in a current frame in the standby mode and data signals in an identical row line in a previous frame and determining that light has been irradiated when the variation is equal to or greater than a threshold,
- wherein the image sensor further includes a stabilization mode, and repeats the image sensor repeatedly performs operations of the standby mode, operations of the image acquisition mode, and operations of the stabilization mode in order.
Dependencies are inferred from the claim text.