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1. (CN102265606) Solid-state image pickup device, digital camera, and a/d conversion method

Office : China
Application Number: 200980152319.3 Application Date: 21.12.2009
Publication Number: 102265606 Publication Date: 30.11.2011
Publication Kind : A
Prior PCT appl.: Application Number:PCTJP2009007058 ; Publication Number:2010073584 Click to see the data
IPC:
H04N 5/3745
H03M 1/14
H ELECTRICITY
04
ELECTRIC COMMUNICATION TECHNIQUE
N
PICTORIAL COMMUNICATION, e.g. TELEVISION
5
Details of television systems
30
Transforming light or analogous information into electric information
335
using solid-state image sensors [SSIS]
369
SSIS architecture; Circuitry associated therewith
374
Addressed sensors, e.g. MOS or CMOS sensors
3745
having additional components embedded within a pixel or connected to a group of pixels within a sensor matrix, e.g. memories, A/D converters, pixel amplifiers, shared circuits or shared components
H ELECTRICITY
03
BASIC ELECTRONIC CIRCUITRY
M
CODING, DECODING OR CODE CONVERSION, IN GENERAL
1
Analogue/digital conversion; Digital/analogue conversion
12
Analogue/digital converters
14
Conversion in steps with each step involving the same or a different conversion means and delivering more than one bit
CPC:
H03M 1/144
H03M 1/123
H03M 1/56
H04N 5/37455
Applicants: Panasonic Corp.
松下电器产业株式会社
Inventors: Tanaka Nozomi
田中望美
Agents: huang jianfeng
永新专利商标代理有限公司 72002
Priority Data: 2008331626 25.12.2008 JP
Title: (EN) Solid-state image pickup device, digital camera, and a/d conversion method
(ZH) 固体摄像装置、数字相机以及AD转换方法
Abstract: front page image
(EN) A solid-state image pickup device (A) is provided with a pixel unit (1) which comprises a plurality of unit pixels (7) arranged in a matrix, a column signal line which is provided for each column of the pixel unit (1), an A/D conversion unit (3) which converts the voltage of a pixel signal from the column signal line to a digital value by counting the time required for a reference signal (Vramp) to reach the voltage of the pixel signal, and a clock signal generator (C) which generates for the A/D conversion unit (3) a counter clock (CLKAD) for the counting. During the A/D conversion, the clock signal generator (C) switches the frequency of the counter clock (CLKAD) from a first frequency to a second frequency different from the first frequency.
(ZH)

本发明的固体摄像装置(A)具备:像素部(1),具有被配置为矩阵状的多个单位像素(7);列信号线,被设置在所述像素部(1)的每个列;模数转换部(3),通过对参考信号(Vramp)到达来自所述列信号线的像素信号的电压为止的时间进行计数,从而将所述像素信号的电压转换为数字值;以及时钟信号产生部(C),针对所述模数转换部(3),产生用于所述计数的计数时钟(CLKAD),所述时钟信号产生部(C),在模数转换期间,将所述计数时钟(CLKAD)的频率从第一频率切换到与第一频率不同的第二频率。


Also published as:
WO/2010/073584