JPS54124713A - Video signal recording-reproducing method - Google Patents
Video signal recording-reproducing methodInfo
- Publication number
- JPS54124713A JPS54124713A JP3194878A JP3194878A JPS54124713A JP S54124713 A JPS54124713 A JP S54124713A JP 3194878 A JP3194878 A JP 3194878A JP 3194878 A JP3194878 A JP 3194878A JP S54124713 A JPS54124713 A JP S54124713A
- Authority
- JP
- Japan
- Prior art keywords
- video signal
- side band
- band level
- tape
- signal recording
- 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
Landscapes
- Television Signal Processing For Recording (AREA)
Abstract
PURPOSE: To improve carrier-to-noise ratios and achieve the improvement of the SN ratio of video signal by stressing and recording the side band level of FM modulating waves and attenuating the side band level at the reproducing.
CONSTITUTION: Input video signal is preemphasized 2 and is FM modulated 3, thence its side band level is stressed 4 and is recorded in a tape 12 by heads 10, 11 via amplifier 5, changeover switch 6, rotary transformer 7, revolving shaft 8 and rotary head bar 9. The reproduction signal from the tape 12 is outputted via switch 6 by passing through amplifier 17, side band level attenuating circuit 18, FM demodulator 19 and deemphasis circuit 20.
COPYRIGHT: (C)1979,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP3194878A JPS54124713A (en) | 1978-03-20 | 1978-03-20 | Video signal recording-reproducing method |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP3194878A JPS54124713A (en) | 1978-03-20 | 1978-03-20 | Video signal recording-reproducing method |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS54124713A true JPS54124713A (en) | 1979-09-27 |
JPS6214906B2 JPS6214906B2 (en) | 1987-04-04 |
Family
ID=12345177
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP3194878A Granted JPS54124713A (en) | 1978-03-20 | 1978-03-20 | Video signal recording-reproducing method |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS54124713A (en) |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5819711A (en) * | 1981-07-29 | 1983-02-04 | Hitachi Ltd | Signal processing method for magnetic recorder |
JPS5870405A (en) * | 1981-10-22 | 1983-04-26 | Nippon Kogaku Kk <Nikon> | Method for recording improvement of picture quality in picture recording device |
JPS5880106A (en) * | 1981-11-04 | 1983-05-14 | Hitachi Ltd | Signal processing method of magnetic video recorder |
JPS5897992A (en) * | 1981-12-07 | 1983-06-10 | Hitachi Ltd | Chroma signal recording and reproducing circuit |
JPS61142894A (en) * | 1985-10-18 | 1986-06-30 | Hitachi Ltd | Chrominance signal recording and reproducing circuit |
-
1978
- 1978-03-20 JP JP3194878A patent/JPS54124713A/en active Granted
Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5819711A (en) * | 1981-07-29 | 1983-02-04 | Hitachi Ltd | Signal processing method for magnetic recorder |
JPS5870405A (en) * | 1981-10-22 | 1983-04-26 | Nippon Kogaku Kk <Nikon> | Method for recording improvement of picture quality in picture recording device |
JPS5880106A (en) * | 1981-11-04 | 1983-05-14 | Hitachi Ltd | Signal processing method of magnetic video recorder |
JPH0445881B2 (en) * | 1981-11-04 | 1992-07-28 | Hitachi Ltd | |
JPS5897992A (en) * | 1981-12-07 | 1983-06-10 | Hitachi Ltd | Chroma signal recording and reproducing circuit |
JPH0117636B2 (en) * | 1981-12-07 | 1989-03-31 | Hitachi Ltd | |
JPS61142894A (en) * | 1985-10-18 | 1986-06-30 | Hitachi Ltd | Chrominance signal recording and reproducing circuit |
JPH0123993B2 (en) * | 1985-10-18 | 1989-05-09 | Hitachi Ltd |
Also Published As
Publication number | Publication date |
---|---|
JPS6214906B2 (en) | 1987-04-04 |
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