JPS6489867A - Method and apparatus of eliminating false synchronizing pulse and/or agc pulse from video signal - Google Patents
Method and apparatus of eliminating false synchronizing pulse and/or agc pulse from video signalInfo
- Publication number
- JPS6489867A JPS6489867A JP62237076A JP23707687A JPS6489867A JP S6489867 A JPS6489867 A JP S6489867A JP 62237076 A JP62237076 A JP 62237076A JP 23707687 A JP23707687 A JP 23707687A JP S6489867 A JPS6489867 A JP S6489867A
- Authority
- JP
- Japan
- Prior art keywords
- pulse
- video signal
- synchronizing
- agc
- pass filter
- 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
Abstract
PURPOSE: To remove an AGC pulse from a deformed video signal by operating the selective blanking of a video signal in a prescribed period following the generation of a synchronizing pulse. CONSTITUTION: A band pass filter 22 selectively filters and removes an AGC pulse for color burst information. A deformed input video signal from a buffer amplifier 10 drives a synchronizing separator circuit 30, the leading edge of each synchronizing pulse triggers a single stable multi-vibrator 32, and a synchronizing chip clamp 12 is clamped by a prescribed voltage. The single stable pulse in 5 micro-seconds of a single stable multi-vibrator 34 based on the tailing edge of each synchronizing pulse is used for the control of a switch 14, and the switch 14 is always connected with the output side of the band pass filter 22 when the pulse is high. The AGC pulse is generated after the synchronizing pulse. Thus, the AGC pulse can be removed from the video signal by the selection of the band pass filter 22 in a period in 5 micro-seconds following the synchronizing pulse.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62237076A JP2512008B2 (en) | 1987-09-21 | 1987-09-21 | Method and apparatus for removing pseudo sync pulses and / or AGC pulses from a video signal |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62237076A JP2512008B2 (en) | 1987-09-21 | 1987-09-21 | Method and apparatus for removing pseudo sync pulses and / or AGC pulses from a video signal |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS6489867A true JPS6489867A (en) | 1989-04-05 |
JP2512008B2 JP2512008B2 (en) | 1996-07-03 |
Family
ID=17010061
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP62237076A Expired - Lifetime JP2512008B2 (en) | 1987-09-21 | 1987-09-21 | Method and apparatus for removing pseudo sync pulses and / or AGC pulses from a video signal |
Country Status (1)
Country | Link |
---|---|
JP (1) | JP2512008B2 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1998016928A1 (en) * | 1996-10-16 | 1998-04-23 | International Business Machines Corporation | Method and system for managing access to data |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5728485A (en) * | 1980-07-28 | 1982-02-16 | Victor Co Of Japan Ltd | Adaptor for video signal recording and copying |
JPS61288582A (en) * | 1985-04-17 | 1986-12-18 | ジヨン・オリバ−・ライアン | Video signal processing method and apparatus |
-
1987
- 1987-09-21 JP JP62237076A patent/JP2512008B2/en not_active Expired - Lifetime
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5728485A (en) * | 1980-07-28 | 1982-02-16 | Victor Co Of Japan Ltd | Adaptor for video signal recording and copying |
JPS61288582A (en) * | 1985-04-17 | 1986-12-18 | ジヨン・オリバ−・ライアン | Video signal processing method and apparatus |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1998016928A1 (en) * | 1996-10-16 | 1998-04-23 | International Business Machines Corporation | Method and system for managing access to data |
Also Published As
Publication number | Publication date |
---|---|
JP2512008B2 (en) | 1996-07-03 |
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Legal Events
Date | Code | Title | Description |
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R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
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R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
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R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
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R250 | Receipt of annual fees |
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|
EXPY | Cancellation because of completion of term | ||
FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20080416 Year of fee payment: 12 |