JPS54146925A - Magnetic recording and reproducing device - Google Patents
Magnetic recording and reproducing deviceInfo
- Publication number
- JPS54146925A JPS54146925A JP5453178A JP5453178A JPS54146925A JP S54146925 A JPS54146925 A JP S54146925A JP 5453178 A JP5453178 A JP 5453178A JP 5453178 A JP5453178 A JP 5453178A JP S54146925 A JPS54146925 A JP S54146925A
- Authority
- JP
- Japan
- Prior art keywords
- recording
- signals
- color
- time
- level
- 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 improve S/N by increasing the recording current in comparison with a normal recording time to raise a reproducing level in case of switching to recording for a long time.
CONSTITUTION: Signals applied from the VTR external to input terminal 11 have luminance components in video signals taken out by video processing circuit 1, and luminance components are subjected to frequency modulation by FM modulator 2 and are amplified by luminance signal recording amplifier 3. Meanwhile, in the color signal system, color components in video signals are taken out by band pass filter 9 and are amplified by color signal recording amplifier 7 after converted to a low band by frequency converter 8. FM modulation signals and color signals converted to the low band are adjusted to proper levels by level adjustment equipment 4 and 6 and are mixed and supplied to head 5. Level adjustment equipment 6 is controlled by control part 10 according to switching of the recording time, and the recording current level of color signals is raised to perform recording at a long-time (4 hours) recording time.
COPYRIGHT: (C)1979,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP53054531A JPS6036676B2 (en) | 1978-05-10 | 1978-05-10 | magnetic recording and reproducing device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP53054531A JPS6036676B2 (en) | 1978-05-10 | 1978-05-10 | magnetic recording and reproducing device |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS54146925A true JPS54146925A (en) | 1979-11-16 |
JPS6036676B2 JPS6036676B2 (en) | 1985-08-21 |
Family
ID=12973240
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP53054531A Expired JPS6036676B2 (en) | 1978-05-10 | 1978-05-10 | magnetic recording and reproducing device |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS6036676B2 (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS58172089A (en) * | 1982-04-02 | 1983-10-08 | Hitachi Ltd | Signal writing circuit |
JPS5948804A (en) * | 1982-09-10 | 1984-03-21 | Hitachi Ltd | Recording circuit of video tape recorder |
JPS59138185A (en) * | 1983-01-28 | 1984-08-08 | Hitachi Ltd | Recording circuit of video tape recorder |
-
1978
- 1978-05-10 JP JP53054531A patent/JPS6036676B2/en not_active Expired
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS58172089A (en) * | 1982-04-02 | 1983-10-08 | Hitachi Ltd | Signal writing circuit |
JPS5948804A (en) * | 1982-09-10 | 1984-03-21 | Hitachi Ltd | Recording circuit of video tape recorder |
JPH0424778B2 (en) * | 1982-09-10 | 1992-04-28 | Hitachi Ltd | |
JPS59138185A (en) * | 1983-01-28 | 1984-08-08 | Hitachi Ltd | Recording circuit of video tape recorder |
JPH0134515B2 (en) * | 1983-01-28 | 1989-07-19 | Hitachi Ltd |
Also Published As
Publication number | Publication date |
---|---|
JPS6036676B2 (en) | 1985-08-21 |
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