JPS648796A - Magnetic recording and reproducing device - Google Patents
Magnetic recording and reproducing deviceInfo
- Publication number
- JPS648796A JPS648796A JP62165028A JP16502887A JPS648796A JP S648796 A JPS648796 A JP S648796A JP 62165028 A JP62165028 A JP 62165028A JP 16502887 A JP16502887 A JP 16502887A JP S648796 A JPS648796 A JP S648796A
- Authority
- JP
- Japan
- Prior art keywords
- recording
- recorded
- amplification factor
- signal
- amplifier
- 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
Abstract
PURPOSE:To obtain a reproducing pattern without rainbow color noise by using a recording current control means so as to reduce a recording current at a termination part. CONSTITUTION:A mixing circuit 14 mixes a luminance signal FM signal and a low frequency conversion chrominance signal and outputs the result to a recording amplifier 18. The mixed signal is amplified at the amplifier 18 by a prescribed amplification factor and recorded on a magnetic tape 1 through video heads 5, 6. The amplifier 18 is controlled into three stages; the 1st amplification factor in reducing the recording current at the termination of the already recorded part more at the normal recording, the 2nd amplification factor at the normal recording and the 3rd amplification factor in recording the start of the part recorded newly depending on a command of a system microcomputer 21. Thus, the recording current to the chrominance signal at the end of the already recorded is reduced and recorded in advance to prevent noise at reproduction.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62165028A JPS648796A (en) | 1987-06-30 | 1987-06-30 | Magnetic recording and reproducing device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62165028A JPS648796A (en) | 1987-06-30 | 1987-06-30 | Magnetic recording and reproducing device |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS648796A true JPS648796A (en) | 1989-01-12 |
Family
ID=15804469
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP62165028A Pending JPS648796A (en) | 1987-06-30 | 1987-06-30 | Magnetic recording and reproducing device |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS648796A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5158899A (en) * | 1990-05-09 | 1992-10-27 | Mitsubishi Denki Kabushiki Kaisha | Method of manufacturing input circuit of semiconductor device |
JP2008235418A (en) * | 2007-03-19 | 2008-10-02 | Yaskawa Electric Corp | Cooling device and electronic equipment equipped with the same |
-
1987
- 1987-06-30 JP JP62165028A patent/JPS648796A/en active Pending
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5158899A (en) * | 1990-05-09 | 1992-10-27 | Mitsubishi Denki Kabushiki Kaisha | Method of manufacturing input circuit of semiconductor device |
JP2008235418A (en) * | 2007-03-19 | 2008-10-02 | Yaskawa Electric Corp | Cooling device and electronic equipment equipped with the same |
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