JPS6489868A - Video signal processing circuit - Google Patents
Video signal processing circuitInfo
- Publication number
- JPS6489868A JPS6489868A JP62246914A JP24691487A JPS6489868A JP S6489868 A JPS6489868 A JP S6489868A JP 62246914 A JP62246914 A JP 62246914A JP 24691487 A JP24691487 A JP 24691487A JP S6489868 A JPS6489868 A JP S6489868A
- Authority
- JP
- Japan
- Prior art keywords
- signal
- level
- signal level
- video signal
- advance
- 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
- Television Signal Processing For Recording (AREA)
Abstract
PURPOSE:To prevent deterioration of picture quality of a reproduced video image in advance by setting a signal level of a blanking period to a prescribed value aud applying digital signal processing and adding a reference synchronizing signal. CONSTITUTION:A clamp circuit 21 clamping a pedestal level of an analog video signal SY to a prescribed signal level and a blanking circuit 22 replacing the signal level of horizontal and vertical blanking periods of an analog video signal outputted from the clamp circuit 21 into a prescribed signal level are provided. The signal level of the horizontal and vertical blanking periods to a prescribed value in the stage of the analog video signal SY and analog/digital conversion is processed and reference synchronizing signals DSYNC, DB1 are added. Thus, the shift in the pedestal level due to quantization error is prevented in advance to replace the synchronizing signal DSYNC, DB1 surely and the deterioration in the picture quality of the reproduced video image is prevented in advance.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62246914A JPS6489868A (en) | 1987-09-30 | 1987-09-30 | Video signal processing circuit |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62246914A JPS6489868A (en) | 1987-09-30 | 1987-09-30 | Video signal processing circuit |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS6489868A true JPS6489868A (en) | 1989-04-05 |
Family
ID=17155629
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP62246914A Pending JPS6489868A (en) | 1987-09-30 | 1987-09-30 | Video signal processing circuit |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS6489868A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102104739A (en) * | 2009-12-22 | 2011-06-22 | 索尼公司 | Transmission system, imaging apparatus, and transmission method |
US11803377B2 (en) | 2017-09-08 | 2023-10-31 | Oracle International Corporation | Efficient direct convolution using SIMD instructions |
-
1987
- 1987-09-30 JP JP62246914A patent/JPS6489868A/en active Pending
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102104739A (en) * | 2009-12-22 | 2011-06-22 | 索尼公司 | Transmission system, imaging apparatus, and transmission method |
US11803377B2 (en) | 2017-09-08 | 2023-10-31 | Oracle International Corporation | Efficient direct convolution using SIMD instructions |
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