JPS5769988A - Processing circuit for video signal - Google Patents
Processing circuit for video signalInfo
- Publication number
- JPS5769988A JPS5769988A JP55146614A JP14661480A JPS5769988A JP S5769988 A JPS5769988 A JP S5769988A JP 55146614 A JP55146614 A JP 55146614A JP 14661480 A JP14661480 A JP 14661480A JP S5769988 A JPS5769988 A JP S5769988A
- Authority
- JP
- Japan
- Prior art keywords
- signal
- circuit
- dropout
- switch
- video signal
- 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
- H04N9/00—Details of colour television systems
- H04N9/79—Processing of colour television signals in connection with recording
- H04N9/87—Regeneration of colour television signals
- H04N9/88—Signal drop-out compensation
- H04N9/882—Signal drop-out compensation the signal being a composite colour television signal
Landscapes
- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
Abstract
PURPOSE:To compensate the dropout to a playback video signal from a VTR and to correct the continuity of carrier phase of a chroma signal at speed change playback, by incorporating the dropout compensation circuit and the phase correction circuit for chroma signal. CONSTITUTION:Normally, when a switch 8 is switched to a filter 3, a delay circuit 5 and a subtraction circuit 14 form a comb type filter, and this comb type filter and a band pass filter 3 separate the chroma signal from a playback video signal at an input terminal 1 accurately. If any dropout takes place to this chroma signal, the switch 8 is selected to an inverter 7 side, and a signal delayed by one horizontal period is picked up from a subtraction circuit 14 and a applied to a phase correction circuit 16 and picked up at an output terminal 22 via a mixing circuit 20. If no dropout signal takes place, the input signal is outputted to an output terminal 22 from a switch 21.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP55146614A JPS5769988A (en) | 1980-10-20 | 1980-10-20 | Processing circuit for video signal |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP55146614A JPS5769988A (en) | 1980-10-20 | 1980-10-20 | Processing circuit for video signal |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5769988A true JPS5769988A (en) | 1982-04-30 |
JPS6358437B2 JPS6358437B2 (en) | 1988-11-15 |
Family
ID=15411712
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP55146614A Granted JPS5769988A (en) | 1980-10-20 | 1980-10-20 | Processing circuit for video signal |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5769988A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5861586U (en) * | 1981-10-20 | 1983-04-25 | 三洋電機株式会社 | video tape recorder |
JPS61208995A (en) * | 1985-03-13 | 1986-09-17 | Pioneer Electronic Corp | Dropout correcting circuit |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH032520U (en) * | 1989-05-26 | 1991-01-11 |
-
1980
- 1980-10-20 JP JP55146614A patent/JPS5769988A/en active Granted
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5861586U (en) * | 1981-10-20 | 1983-04-25 | 三洋電機株式会社 | video tape recorder |
JPH0411435Y2 (en) * | 1981-10-20 | 1992-03-23 | ||
JPS61208995A (en) * | 1985-03-13 | 1986-09-17 | Pioneer Electronic Corp | Dropout correcting circuit |
Also Published As
Publication number | Publication date |
---|---|
JPS6358437B2 (en) | 1988-11-15 |
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