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1. CN101057493 - Image sensor

Office
China
Application Number 200580038154.9
Application Date 28.10.2005
Publication Number 101057493
Publication Date 17.10.2007
Grant Number 101057493
Grant Date 25.05.2011
Publication Kind B
IPC
H04N 5/355
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
NPICTORIAL COMMUNICATION, e.g. TELEVISION
5Details of television systems
30Transforming light or analogous information into electric information
335using solid-state image sensors
351Control of the SSIS depending on the scene, e.g. brightness or motion in the scene
355Control of the dynamic range
H04N 5/361
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
NPICTORIAL COMMUNICATION, e.g. TELEVISION
5Details of television systems
30Transforming light or analogous information into electric information
335using solid-state image sensors
357Noise processing, e.g. detecting, correcting, reducing or removing noise
361applied to dark current
H04N 5/374
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
NPICTORIAL COMMUNICATION, e.g. TELEVISION
5Details of television systems
30Transforming light or analogous information into electric information
335using solid-state image sensors
369SSIS architecture; Circuitry associated therewith
374Addressed sensors, e.g. MOS or CMOS sensors
H04N 5/235
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
NPICTORIAL COMMUNICATION, e.g. TELEVISION
5Details of television systems
222Studio circuitry; Studio devices; Studio equipment
225Television cameras
235Circuitry for compensating for variation in the brightness of the object
H04N 9/04
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
NPICTORIAL COMMUNICATION, e.g. TELEVISION
9Details of colour television systems
04Picture signal generators
CPC
H04N 5/2353
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
NPICTORIAL COMMUNICATION, e.g. TELEVISION
5Details of television systems
222Studio circuitry; Studio devices; Studio equipment ; ; Cameras comprising an electronic image sensor, e.g. digital cameras, video cameras, TV cameras, video cameras, camcorders, webcams, camera modules for embedding in other devices, e.g. mobile phones, computers or vehicles
225Television cameras ; ; Cameras comprising an electronic image sensor, e.g. digital cameras, video cameras, camcorders, webcams, camera modules specially adapted for being embedded in other devices, e.g. mobile phones, computers or vehicles
235Circuitry ; or methods; for compensating for variation in the brightness of the object ; , e.g. based on electric image signals provided by an electronic image sensor
2353by influencing the exposure time, e.g. shutter
H04N 5/2355
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
NPICTORIAL COMMUNICATION, e.g. TELEVISION
5Details of television systems
222Studio circuitry; Studio devices; Studio equipment ; ; Cameras comprising an electronic image sensor, e.g. digital cameras, video cameras, TV cameras, video cameras, camcorders, webcams, camera modules for embedding in other devices, e.g. mobile phones, computers or vehicles
225Television cameras ; ; Cameras comprising an electronic image sensor, e.g. digital cameras, video cameras, camcorders, webcams, camera modules specially adapted for being embedded in other devices, e.g. mobile phones, computers or vehicles
235Circuitry ; or methods; for compensating for variation in the brightness of the object ; , e.g. based on electric image signals provided by an electronic image sensor
2355by increasing the dynamic range of the final image compared to the dynamic range of the electronic image sensor, e.g. by adding correct exposed portions of short and long exposed images
H04N 5/3535
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
NPICTORIAL COMMUNICATION, e.g. TELEVISION
5Details of television systems
30Transforming light or analogous information into electric information
335using solid-state image sensors [SSIS]
351Control of the SSIS depending on the scene, e.g. brightness or motion in the scene
353Control of the integration time
3535with different integration times within the sensor
H04N 5/35554
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
NPICTORIAL COMMUNICATION, e.g. TELEVISION
5Details of television systems
30Transforming light or analogous information into electric information
335using solid-state image sensors [SSIS]
351Control of the SSIS depending on the scene, e.g. brightness or motion in the scene
355Control of the dynamic range
35536involving multiple exposures
35545being simultaneously taken
35554with different integration times
H04N 5/35581
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
NPICTORIAL COMMUNICATION, e.g. TELEVISION
5Details of television systems
30Transforming light or analogous information into electric information
335using solid-state image sensors [SSIS]
351Control of the SSIS depending on the scene, e.g. brightness or motion in the scene
355Control of the dynamic range
35536involving multiple exposures
35572sequentially taken, e.g. using the combination of odd and even image fields
35581with different integration times, e.g. short and long exposures
H04N 5/361
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
NPICTORIAL COMMUNICATION, e.g. TELEVISION
5Details of television systems
30Transforming light or analogous information into electric information
335using solid-state image sensors [SSIS]
357Noise processing, e.g. detecting, correcting, reducing or removing noise
361applied to dark current
Applicants Matsushita Electric Ind Co., Ltd.
松下电器产业株式会社
Inventors Ogawa Masahiro
小川雅裕
Imamura Kunihiro
今村邦博
Nishikawa Mayu
西川真由
Hatano Toshinobu
秦野敏信
Agents luyi zhude he
北京德琦知识产权代理有限公司 11018
北京德琦知识产权代理有限公司 11018
Priority Data 319148/2004 02.11.2004 JP
Title
(EN) Image sensor
(ZH) 图像传感器
Abstract
(EN) The problem of the invention is to suppress image quality deterioration while expanding a dynamic range. In the following manner, an image sensor reads out a signal charge accumulated in image pickup elements from an area sensor wherein a plurality of image pickup elements are arranged in matrix. First, after setting a plurality of different exposure times, these exposure times are separately allotted to each line of the area sensor. Then, the signal charge accumulated in the image pickup element in the allotted exposure time is read out by a line unit of the area sensor. Then, the read out signal charges are composed by a screen unit of the area sensor.
(ZH)

在扩展动态范围的同时抑制图片质量的恶化,按照如下方式,图像传感器从其中以矩阵形式布置多个图像采集元件的区域传感器读出在所述图像采集元件中累积的信号电荷。首先,在设置多种不同的曝光时间之后,将这些曝光时间分别分配到所述区域传感器的各行。然后,以所述区域传感器的行为单位,读出在所分配的曝光时间中在所述图像采集元件中累积的信号电荷。然后,以所述区域传感器的屏幕为单位合成所读出的信号电荷。


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