JP4485203B2 - ノイズ消去型cmos画像センサ - Google Patents
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- JP4485203B2 JP4485203B2 JP2003543314A JP2003543314A JP4485203B2 JP 4485203 B2 JP4485203 B2 JP 4485203B2 JP 2003543314 A JP2003543314 A JP 2003543314A JP 2003543314 A JP2003543314 A JP 2003543314A JP 4485203 B2 JP4485203 B2 JP 4485203B2
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Classifications
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N1/00—Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
- H04N1/32—Circuits or arrangements for control or supervision between transmitter and receiver or between image input and image output device, e.g. between a still-image camera and its memory or between a still-image camera and a printer device
- H04N1/32358—Circuits or arrangements for control or supervision between transmitter and receiver or between image input and image output device, e.g. between a still-image camera and its memory or between a still-image camera and a printer device using picture signal storage, e.g. at transmitter
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11C—STATIC STORES
- G11C11/00—Digital stores characterised by the use of particular electric or magnetic storage elements; Storage elements therefor
- G11C11/21—Digital stores characterised by the use of particular electric or magnetic storage elements; Storage elements therefor using electric elements
- G11C11/34—Digital stores characterised by the use of particular electric or magnetic storage elements; Storage elements therefor using electric elements using semiconductor devices
- G11C11/40—Digital stores characterised by the use of particular electric or magnetic storage elements; Storage elements therefor using electric elements using semiconductor devices using transistors
- G11C11/401—Digital stores characterised by the use of particular electric or magnetic storage elements; Storage elements therefor using electric elements using semiconductor devices using transistors forming cells needing refreshing or charge regeneration, i.e. dynamic cells
- G11C11/4063—Auxiliary circuits, e.g. for addressing, decoding, driving, writing, sensing or timing
- G11C11/407—Auxiliary circuits, e.g. for addressing, decoding, driving, writing, sensing or timing for memory cells of the field-effect type
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L27/00—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate
- H01L27/14—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including semiconductor components sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation
- H01L27/144—Devices controlled by radiation
- H01L27/146—Imager structures
- H01L27/14643—Photodiode arrays; MOS imagers
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N1/00—Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
- H04N1/32—Circuits or arrangements for control or supervision between transmitter and receiver or between image input and image output device, e.g. between a still-image camera and its memory or between a still-image camera and a printer device
- H04N1/32358—Circuits or arrangements for control or supervision between transmitter and receiver or between image input and image output device, e.g. between a still-image camera and its memory or between a still-image camera and a printer device using picture signal storage, e.g. at transmitter
- H04N1/32459—Circuits or arrangements for control or supervision between transmitter and receiver or between image input and image output device, e.g. between a still-image camera and its memory or between a still-image camera and a printer device using picture signal storage, e.g. at transmitter for changing the arrangement of the stored data
- H04N1/32475—Changing the format of the data, e.g. parallel to serial or vice versa
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N1/00—Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
- H04N1/32—Circuits or arrangements for control or supervision between transmitter and receiver or between image input and image output device, e.g. between a still-image camera and its memory or between a still-image camera and a printer device
- H04N1/32358—Circuits or arrangements for control or supervision between transmitter and receiver or between image input and image output device, e.g. between a still-image camera and its memory or between a still-image camera and a printer device using picture signal storage, e.g. at transmitter
- H04N1/32491—Circuits or arrangements for control or supervision between transmitter and receiver or between image input and image output device, e.g. between a still-image camera and its memory or between a still-image camera and a printer device using picture signal storage, e.g. at transmitter alternate storage in and retrieval from two parallel memories, e.g. using ping-pong buffers
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N1/00—Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
- H04N1/40—Picture signal circuits
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N25/00—Circuitry of solid-state image sensors [SSIS]; Control thereof
- H04N25/60—Noise processing, e.g. detecting, correcting, reducing or removing noise
- H04N25/616—Noise processing, e.g. detecting, correcting, reducing or removing noise involving a correlated sampling function, e.g. correlated double sampling [CDS] or triple sampling
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N25/00—Circuitry of solid-state image sensors [SSIS]; Control thereof
- H04N25/60—Noise processing, e.g. detecting, correcting, reducing or removing noise
- H04N25/65—Noise processing, e.g. detecting, correcting, reducing or removing noise applied to reset noise, e.g. KTC noise related to CMOS structures by techniques other than CDS
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N25/00—Circuitry of solid-state image sensors [SSIS]; Control thereof
- H04N25/70—SSIS architectures; Circuits associated therewith
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N25/00—Circuitry of solid-state image sensors [SSIS]; Control thereof
- H04N25/70—SSIS architectures; Circuits associated therewith
- H04N25/71—Charge-coupled device [CCD] sensors; Charge-transfer registers specially adapted for CCD sensors
- H04N25/75—Circuitry for providing, modifying or processing image signals from the pixel array
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N25/00—Circuitry of solid-state image sensors [SSIS]; Control thereof
- H04N25/70—SSIS architectures; Circuits associated therewith
- H04N25/76—Addressed sensors, e.g. MOS or CMOS sensors
- H04N25/77—Pixel circuitry, e.g. memories, A/D converters, pixel amplifiers, shared circuits or shared components
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N25/00—Circuitry of solid-state image sensors [SSIS]; Control thereof
- H04N25/70—SSIS architectures; Circuits associated therewith
- H04N25/76—Addressed sensors, e.g. MOS or CMOS sensors
- H04N25/77—Pixel circuitry, e.g. memories, A/D converters, pixel amplifiers, shared circuits or shared components
- H04N25/771—Pixel circuitry, e.g. memories, A/D converters, pixel amplifiers, shared circuits or shared components comprising storage means other than floating diffusion
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N9/00—Details of colour television systems
- H04N9/64—Circuits for processing colour signals
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N2201/00—Indexing scheme relating to scanning, transmission or reproduction of documents or the like, and to details thereof
- H04N2201/0077—Types of the still picture apparatus
- H04N2201/0081—Image reader
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N2201/00—Indexing scheme relating to scanning, transmission or reproduction of documents or the like, and to details thereof
- H04N2201/32—Circuits or arrangements for control or supervision between transmitter and receiver or between image input and image output device, e.g. between a still-image camera and its memory or between a still-image camera and a printer device
- H04N2201/3285—Circuits or arrangements for control or supervision between transmitter and receiver or between image input and image output device, e.g. between a still-image camera and its memory or between a still-image camera and a printer device using picture signal storage, e.g. at transmitter
- H04N2201/329—Storage of less than a complete document page or image frame
- H04N2201/3292—Storage of less than a complete document page or image frame of one or two complete lines
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N9/00—Details of colour television systems
- H04N9/64—Circuits for processing colour signals
- H04N9/642—Multi-standard receivers
Description
本願は、米国特許法119条(e)に基づき、2001年11月6日出願の仮出願第60/333216号、2001年12月3日出願の仮出願第60/338465号、および2002年1月5日出願の仮出願第60/345672号からの優先権を主張するものである。
Claims (21)
- 光検出器と、
前記検出器から信号を受信するために結合されたゲートを有する出力トランジスタと、
前記光検出器に結合されたドレイン・ターミナルリセット・トランジスタと、
前記出力トランジスタから出力信号を受信するために結合された第1の減算回路と、
を具備し、
前記出力トランジスタは、前記リセット・トランジスタがトライオード領域に駆動されると、サンプルされた第1の基準出力信号を供給し、
前記出力トランジスタは、前記リセット・トランジスタが前記トライオード領域からOFF状態に切り換えられると、前記サンプルされた前記第1の基準出力信号とは異なる電圧を有するサンプルされたリセット出力信号を供給し、
前記第1の減算回路は、前記リセット・トランジスタが前記トライオード領域にある場合、前記サンプルされた第1の基準出力信号をサンプルして格納し、前記リセット・トランジスタがOFF状態にある場合、前記サンプルされたリセット出力信号をサンプルして格納し、前記サンプルされたリセット出力信号と前記サンプルされた第1の基準出力信号の差からノイズ信号を形成することを特徴とするCMOS画像センサ。 - 前記出力トランジスタは、前記サンプルされたリセット出力信号にしたがって前記リセット・トランジスタがOFF状態にあるとき、切り換えられてサンプルされた光応答出力信号を供給し、
前記リセット・トランジスタが前記OFF状態から第2のトライオード領域に切り換えられると、前記出力トランジスタは第2のサンプルされた基準出力信号を供給し、
前記第1の減算回路は、前記リセット・トランジスタが前記OFF状態中に前記サンプルされた光応答出力信号をサンプルして格納し、前記第2のトライオード領域中に前記サンプルされた第2の基準出力信号をサンプルして格納し、前記サンプルされた光応答出力信号と前記第2の基準出力信号との差から正常化された光応答信号を形成することを特徴とする請求項1記載のCMOS画像センサ。 - 前記正常化された光応答信号から前記ノイズ信号を減算するための前記第1の減算回路に結合された第2の減算回路をさらに有することを特徴とする請求項2に記載のCMOS画像センサ。
- 前記ノイズ信号を格納するためのメモリセルをさらに有することを特徴とする請求項3記載のCMOS画像センサ。
- 前記サンプルされた第1の基準出力信号と前記サンプルされた第2の基準出力信号を格納する前記出力トランジスタに結合された第1のキャパシタをさらに有することを特徴とする請求項2記載のCMOS画像センサ。
- 請求項2記載のCMOS画像センサと、
前記正常化された光応答信号と前記ノイズ信号との差から改善されたSNRの画像信号を形成する前記CMOS画像センサに結合された第2の減算回路を有する集積回路と、
を備えることを特徴とする画像取得システム。 - 請求項2記載のCMOS画像センサと、
前記正常化された光応答信号と前記ノイズ信号との差から改善されたSNRの画像信号を形成する前記CMOS画像センサに結合された減算手段と、
を備えることを特徴とする画像取得システム。 - 前記リセット・トランジスタが第1のOFF状態にある場合、前記出力トランジスタは切り換えられて第2のサンプルされた光応答出力信号を供給し、
前記リセット・トランジスタが前記第1のOFF状態からON状態に、その後第2のOFF状態へと切り換えられると、前記出力トランジスタは第2のサンプルされたリセット出力信号を供給し、
前記第1の減算回路は、前記リセット・トランジスタが前記第1のOFF状態中に前記第2のサンプルされた光応答出力信号をサンプルして格納し、前記リセット・トランジスタが前記第2のOFF状態にある場合、前記第2のサンプルされたリセット出力信号をサンプルして格納し、前記第2のサンプルされた光応答出力信号と前記第2のサンプルされたリセット出力信号との差から信号を形成することを特徴とする請求項2記載のCMOS画像センサ。 - 低ノイズモードである第1のモード又は拡張ダイナミックレンジモードである第2のモードでの前記CMOS画像センサにおける前記リセット・トランジスタ、前記出力トランジスタおよび前記第1の減算回路の前記動作は、外部回路による設定が可能であることを特徴とする請求項8記載のCMOS画像センサ。
- 低ノイズモードである第1のモード又は拡張ダイナミックレンジモードである第2のモードでの前記CMOS画像センサにおける前記リセット・トランジスタ、前記出力トランジスタおよび前記第1の減算回路の前記動作は、外部回路による設定が可能であることを特徴とする請求項1又は2記載のCMOS画像センサ。
- 前記第1の減算回路が前記サンプルされた第1の基準出力信号をサンプルする場合、前記リセット・トランジスタのゲートは3状態にあることを特徴とする請求項1記載のCMOS画像センサ。
- 前記ドレイン・ターミナルリセット・トランジスタは、前記3状態の間、ドレイン電圧を増加することを特徴とする請求項11記載のCMOS画像センサ。
- 前記リセット・トランジスタのゲート電圧は、前記3状態中の容量結合による前記リセット・トランジスタのドレインの電圧の変化と同一方向に変化することを特徴とする請求項12記載のCMOS画像センサ。
- 前記リセット・トランジスタは前記ドレイン電圧が変化している間、トライオード領域に残ることを特徴とする請求項13記載のCMOS画像センサ。
- ピクセルは、リセット・トランジスタと、光検出器から信号を受信するために結合されたゲートを有する出力トランジスタを備え、前記リセット・トランジスタはINラインから信号を受信するために接続されたソース・ターミナルと、前記光検出器に結合されたドレイン・ターミナルとを有し、前記出力トランジスタはOUTラインに信号を送るために結合される方法であって、この方法は
基準出力信号が前記OUTラインに送られるように、トライオード領域に前記リセット・トランジスタを切り換えて、前記INラインに基準信号を送るステップと、
前記リセット・トランジスタがサンプルされた基準出力信号を得るためにトライオード領域にある間、前記基準出力信号をサンプリングするステップと、
前記リセット・トランジスタを前記トライオード領域からOFF状態に切り換えるステップと、
前記リセット・トランジスタがサンプルされたリセット出力信号を得るためにOFF状態にある間、前記OUTラインにリセット出力信号をサンプリングするステップと、
前記サンプルされた基準出力信号と前記サンプルされたリセット出力信号の差からノイズ信号を形成するステップと、
を含むことを特徴とするCMOS画像センサのピクセルからノイズ信号を生成する方法。 - 前記リセット・トランジスタは前記基準出力信号のサンプリング後、3状態になることを特徴とする請求項15記載の方法。
- 前記3状態の間、前記ドレイン・ターミナルの反バイアスを増加させるステップをさらに有することを特徴とする請求項16記載の方法。
- 前記リセット・トランジスタのゲート電圧は、前記3状態中の容量結合による前記リセット・トランジスタのドレインの電圧の変化と同一方向に変化することを特徴とする請求項17記載の方法。
- 前記容量の結合は前記リセット・トランジスタのチャネルから前記リセット・トランジスタのゲートまでの間で行われることを特徴とする請求項18記載の方法。
- 前記容量の結合は前記リセット・トランジスタのドレインから前記リセット・トランジスタのゲートまでの間で行われることを特徴とする請求項18記載の方法。
- 前記容量の結合は前記リセット・トランジスタのソースから前記リセット・トランジスタのゲートまでの間で行われることを特徴とする請求項18記載の方法。
Applications Claiming Priority (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US33321601P | 2001-11-06 | 2001-11-06 | |
US33846501P | 2001-12-03 | 2001-12-03 | |
US34567202P | 2002-01-05 | 2002-01-05 | |
US10/183,218 US6795117B2 (en) | 2001-11-06 | 2002-06-26 | CMOS image sensor with noise cancellation |
PCT/US2002/035717 WO2003041404A1 (en) | 2001-11-06 | 2002-11-06 | Cmos image sensor with noise cancellation |
Publications (2)
Publication Number | Publication Date |
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JP2005509378A JP2005509378A (ja) | 2005-04-07 |
JP4485203B2 true JP4485203B2 (ja) | 2010-06-16 |
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Application Number | Title | Priority Date | Filing Date |
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JP2003543314A Expired - Lifetime JP4485203B2 (ja) | 2001-11-06 | 2002-11-06 | ノイズ消去型cmos画像センサ |
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Country | Link |
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US (5) | US6795117B2 (ja) |
EP (1) | EP1452015A4 (ja) |
JP (1) | JP4485203B2 (ja) |
WO (1) | WO2003041404A1 (ja) |
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EP1484910A1 (fr) * | 2003-06-03 | 2004-12-08 | Asulab S.A. | Dispositif et procédé de conversion analogique numérique surnuméraire adaptatif pour un capteur d'image |
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US20060113460A1 (en) * | 2004-11-05 | 2006-06-01 | Tay Hiok N | Image sensor with optimized wire routing |
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JP4855704B2 (ja) * | 2005-03-31 | 2012-01-18 | 株式会社東芝 | 固体撮像装置 |
US8219886B1 (en) * | 2006-01-20 | 2012-07-10 | Marvell International Ltd. | High density multi-level memory |
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