JPS647875A - Reproducing circuit for magnetic recording and reproducing device - Google Patents
Reproducing circuit for magnetic recording and reproducing deviceInfo
- Publication number
- JPS647875A JPS647875A JP62163358A JP16335887A JPS647875A JP S647875 A JPS647875 A JP S647875A JP 62163358 A JP62163358 A JP 62163358A JP 16335887 A JP16335887 A JP 16335887A JP S647875 A JPS647875 A JP S647875A
- Authority
- JP
- Japan
- Prior art keywords
- circuit
- reproducing
- time constant
- deemphasis
- 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.)
- Pending
Links
Landscapes
- Television Signal Processing For Recording (AREA)
Abstract
PURPOSE:To obtain a preferable reproducing video output signal by having the two different characteristics of a deemphasis circuit for a video signal and a synchronizing signal. CONSTITUTION:A video signal VOUT is obtained by using a synchronizing and separating circuit 23, a subtraction circuit 26, the deemphasis circuit A24, the deemphasis circuit B25 and an addition circuit 27. In the relation of the time constant Tt of the deemphasis circuit A24 for the synchronizing signal and the time constant Tp of the deemphasis circuit B25 for the video signal, when the Tp is the same as the time constant of the emphasis circuit 2 of a recording system, the Tt is selected to the time constant smaller than the Tp. Thereby, the deterioration in a dark clip generated based on the difference between a white clip level and the dark clip level is increased at the time of a reproducing, and completely restored.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62163358A JPS647875A (en) | 1987-06-30 | 1987-06-30 | Reproducing circuit for magnetic recording and reproducing device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62163358A JPS647875A (en) | 1987-06-30 | 1987-06-30 | Reproducing circuit for magnetic recording and reproducing device |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS647875A true JPS647875A (en) | 1989-01-11 |
Family
ID=15772364
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP62163358A Pending JPS647875A (en) | 1987-06-30 | 1987-06-30 | Reproducing circuit for magnetic recording and reproducing device |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS647875A (en) |
-
1987
- 1987-06-30 JP JP62163358A patent/JPS647875A/en active Pending
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