JPS56169978A - A-d converter for image sensor - Google Patents
A-d converter for image sensorInfo
- Publication number
- JPS56169978A JPS56169978A JP7397880A JP7397880A JPS56169978A JP S56169978 A JPS56169978 A JP S56169978A JP 7397880 A JP7397880 A JP 7397880A JP 7397880 A JP7397880 A JP 7397880A JP S56169978 A JPS56169978 A JP S56169978A
- Authority
- JP
- Japan
- Prior art keywords
- level
- converter
- signal
- compression
- fed
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N5/00—Details of television systems
- H04N5/14—Picture signal circuitry for video frequency region
Landscapes
- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Picture Signal Circuits (AREA)
- Facsimile Image Signal Circuits (AREA)
- Analogue/Digital Conversion (AREA)
Abstract
PURPOSE:To avoid the decrease in contrast at high luminance, by compressing the input level only more than the standard white level and matching the entire analog signal after compression for a dynamic range of an A/D converter. CONSTITUTION:An analog signal Si outputted from an image sensor 10 is fed to a compression circuit 30 via a buffer amplifier 20. In the circuit 30, a compression start level decided with the forward voltage drop of a diode D and the DC voltage of a DC power supply E is set to the level of the signal Si. Further, the white peak level is the maximum input level of the signal Si after the compression and the compressing coefficient of the standard white level is selected to be 75-90% of the maximum input level. A compressed analog signal S0 is fed to an A/D converter 50 via an amplifier 10. The dynamic range of the converter 50 is matched to that of the signal S0. The digital signal SD outputted from the converter 50 is fed to a gamma compensation circuit 60 for gamma compensation.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP7397880A JPS56169978A (en) | 1980-06-02 | 1980-06-02 | A-d converter for image sensor |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP7397880A JPS56169978A (en) | 1980-06-02 | 1980-06-02 | A-d converter for image sensor |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS56169978A true JPS56169978A (en) | 1981-12-26 |
JPH0357679B2 JPH0357679B2 (en) | 1991-09-02 |
Family
ID=13533689
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP7397880A Granted JPS56169978A (en) | 1980-06-02 | 1980-06-02 | A-d converter for image sensor |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS56169978A (en) |
Cited By (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS58154971A (en) * | 1982-02-19 | 1983-09-14 | エヌ・ベ−・フイリツプス・フル−イランペンフアブリケン | Television image pickup device |
JPS5934776A (en) * | 1982-08-20 | 1984-02-25 | Olympus Optical Co Ltd | Picture signal processor |
JPS61214863A (en) * | 1985-03-21 | 1986-09-24 | Canon Inc | Gradation compensating method |
KR100422579B1 (en) * | 2002-04-29 | 2004-03-12 | 주식회사 하이닉스반도체 | Image sensor and method for signal processing of image sensor |
KR100498594B1 (en) * | 2000-12-30 | 2005-07-01 | 매그나칩 반도체 유한회사 | Cmos image sensor |
US7996188B2 (en) | 2005-08-22 | 2011-08-09 | Accuri Cytometers, Inc. | User interface for a flow cytometer system |
US8004674B2 (en) | 2009-06-02 | 2011-08-23 | Accuri Cytometers, Inc. | Data collection system and method for a flow cytometer |
US8077310B2 (en) | 2006-08-30 | 2011-12-13 | Accuri Cytometers, Inc. | System and method of capturing multiple source excitations from a single location on a flow channel |
US10031064B2 (en) | 2010-10-25 | 2018-07-24 | Accuri Cytometers, Inc. | Systems and user interface for collecting a data set in a flow cytometer |
-
1980
- 1980-06-02 JP JP7397880A patent/JPS56169978A/en active Granted
Cited By (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS58154971A (en) * | 1982-02-19 | 1983-09-14 | エヌ・ベ−・フイリツプス・フル−イランペンフアブリケン | Television image pickup device |
JPS5934776A (en) * | 1982-08-20 | 1984-02-25 | Olympus Optical Co Ltd | Picture signal processor |
JPS61214863A (en) * | 1985-03-21 | 1986-09-24 | Canon Inc | Gradation compensating method |
KR100498594B1 (en) * | 2000-12-30 | 2005-07-01 | 매그나칩 반도체 유한회사 | Cmos image sensor |
KR100422579B1 (en) * | 2002-04-29 | 2004-03-12 | 주식회사 하이닉스반도체 | Image sensor and method for signal processing of image sensor |
US7996188B2 (en) | 2005-08-22 | 2011-08-09 | Accuri Cytometers, Inc. | User interface for a flow cytometer system |
US8077310B2 (en) | 2006-08-30 | 2011-12-13 | Accuri Cytometers, Inc. | System and method of capturing multiple source excitations from a single location on a flow channel |
US8004674B2 (en) | 2009-06-02 | 2011-08-23 | Accuri Cytometers, Inc. | Data collection system and method for a flow cytometer |
US10031064B2 (en) | 2010-10-25 | 2018-07-24 | Accuri Cytometers, Inc. | Systems and user interface for collecting a data set in a flow cytometer |
US10481074B2 (en) | 2010-10-25 | 2019-11-19 | Becton, Dickinson And Company | Systems and user interface for collecting a data set in a flow cytometer |
US11125674B2 (en) | 2010-10-25 | 2021-09-21 | Becton, Dickinson And Company | Systems and user interface for collecting a data set in a flow cytometer |
Also Published As
Publication number | Publication date |
---|---|
JPH0357679B2 (en) | 1991-09-02 |
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