JPS6437179A - Digital video camera - Google Patents
Digital video cameraInfo
- Publication number
- JPS6437179A JPS6437179A JP62193011A JP19301187A JPS6437179A JP S6437179 A JPS6437179 A JP S6437179A JP 62193011 A JP62193011 A JP 62193011A JP 19301187 A JP19301187 A JP 19301187A JP S6437179 A JPS6437179 A JP S6437179A
- Authority
- JP
- Japan
- Prior art keywords
- signal
- optical black
- adder
- converter
- black level
- 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.)
- Pending
Links
Landscapes
- Picture Signal Circuits (AREA)
- Transforming Light Signals Into Electric Signals (AREA)
Abstract
PURPOSE:To prevent the degradation of the quality of a video signal because of the fluctuation in optical black level by detecting the optical black level, holding the detected value during one horizontal cycle, then adding/subtracting to/from a subsequent signal level. CONSTITUTION:A signal from a CCD 1 is inputted to an adder 10 and an optical black detection/memory part 13 through an analog processing circuit 8 and an A/D converter 9. The part 13 detects an optical black level and holds it during one horizontal cycle. Thus held value is inputted to the adder 10 and added/subtracted to/from an output from the A/D converter 10. The output from the adder 10 is subjected to such as gamma, clipping, and synchronizing- signal-adding processings in a ROM part 11, and outputted via an A/D converter 12 as an NTSC signal.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62193011A JPS6437179A (en) | 1987-08-01 | 1987-08-01 | Digital video camera |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62193011A JPS6437179A (en) | 1987-08-01 | 1987-08-01 | Digital video camera |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS6437179A true JPS6437179A (en) | 1989-02-07 |
Family
ID=16300710
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP62193011A Pending JPS6437179A (en) | 1987-08-01 | 1987-08-01 | Digital video camera |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS6437179A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2008109264A (en) * | 2006-10-24 | 2008-05-08 | Sony Corp | Solid state imaging device and imaging apparatus |
-
1987
- 1987-08-01 JP JP62193011A patent/JPS6437179A/en active Pending
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2008109264A (en) * | 2006-10-24 | 2008-05-08 | Sony Corp | Solid state imaging device and imaging apparatus |
US8269863B2 (en) | 2006-10-24 | 2012-09-18 | Sony Corporation | Solid-state image pickup device and image pickup apparatus |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
EP0393823A3 (en) | Image motion vector detecting apparatus | |
CA2038096A1 (en) | Dark current and defective pixel correction apparatus | |
DE3363880D1 (en) | Charge-coupled device cameras | |
JPS5675780A (en) | Video signal processing circuit | |
JPS55163950A (en) | Automatic aperture control method of solid-state pickup unit | |
JPS6484147A (en) | Internal quality inspecting method for metal piece | |
JPS6437179A (en) | Digital video camera | |
JPS6437178A (en) | Digital video camera | |
JPS5560826A (en) | Photometry | |
JPS57133776A (en) | Solid-state image pickup device | |
EP0104817A3 (en) | Automatic chroma filter | |
JPS6434331A (en) | X-ray imaging apparatus | |
JPS55110905A (en) | Defect detecting device | |
JPS5597782A (en) | Solid-state pickup unit | |
JPS5520470A (en) | Signal processing method in surface defect detection of high-temperature tested material | |
JPS56149187A (en) | Color solid image pickup device | |
JPS5725076A (en) | Method for binary-coding of video signal | |
JPS5717276A (en) | Noise rejecting method for solidstate image sensor | |
JPS5742282A (en) | A/d converter for output video signal of vtr | |
KR920020936A (en) | Flare Correction Circuit for Video Camera | |
JPS5825774A (en) | Balck level compensation circuit for image pickup signal | |
JPS6423680A (en) | Image input device | |
JPS5649944A (en) | Method and device for detecting defect of moving sheetlike article | |
JPS6467087A (en) | Digitizing method for picture signal | |
JPS5628570A (en) | Video signal processing circuit |