JPS5319010A - Magnetically recording and reproducing system - Google Patents
Magnetically recording and reproducing systemInfo
- Publication number
- JPS5319010A JPS5319010A JP9349776A JP9349776A JPS5319010A JP S5319010 A JPS5319010 A JP S5319010A JP 9349776 A JP9349776 A JP 9349776A JP 9349776 A JP9349776 A JP 9349776A JP S5319010 A JPS5319010 A JP S5319010A
- Authority
- JP
- Japan
- Prior art keywords
- period
- signals
- during
- clock
- fed
- 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)
- Signal Processing Not Specific To The Method Of Recording And Reproducing (AREA)
Abstract
PURPOSE: To increase the compression ratio of a signal band by using memory elements and heads of the same number as the conventional system in case the time axis conversion is carried out with BBD for the recording purpose with a plurality of magnetic heads. After a video signal a is fed to a terminal 1 and synchronized and separated as at 2, the waveform b having a video portion Tβ and a blanking period Tα is extracted. A ring counter 4 of (n + 1) system which is operated by the signal Tβ produces output wavesforms C1, C2,...Cn + 1. On the other hand, a clock 5 is fed to a composing circuit 7 during the period Tα, and the signals which are produced by dividing the clock 5 into one (1 - a)/(n + a)th (wherein letter a satisfies the relationship a = Tα/(Tα + Tβ)) are supplied to the circuit 7 during the remaining period. As a result, such signals can be obtained by a memory element 8 as is elongated (n + α)/(1 - α) times on the time axis similarly to the waveforms d1 to dn + 1. Moreover, the blanking signals including the horizontal synchronizing signals during the Tα period are taken out and recorded in the tape 11.
COPYRIGHT: (C)1978,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9349776A JPS5319010A (en) | 1976-08-04 | 1976-08-04 | Magnetically recording and reproducing system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9349776A JPS5319010A (en) | 1976-08-04 | 1976-08-04 | Magnetically recording and reproducing system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5319010A true JPS5319010A (en) | 1978-02-21 |
Family
ID=14083973
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9349776A Pending JPS5319010A (en) | 1976-08-04 | 1976-08-04 | Magnetically recording and reproducing system |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5319010A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS604367U (en) * | 1983-06-20 | 1985-01-12 | マックス株式会社 | Bit for screwdriver |
| JPS6117471A (en) * | 1984-07-05 | 1986-01-25 | 三菱マテリアル株式会社 | Titanium carbonitride block and manufacture |
| JPS62232284A (en) * | 1986-04-02 | 1987-10-12 | Hitachi Ltd | Recording and reproducing device for video signal |
-
1976
- 1976-08-04 JP JP9349776A patent/JPS5319010A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS604367U (en) * | 1983-06-20 | 1985-01-12 | マックス株式会社 | Bit for screwdriver |
| JPS6117471A (en) * | 1984-07-05 | 1986-01-25 | 三菱マテリアル株式会社 | Titanium carbonitride block and manufacture |
| JPS62232284A (en) * | 1986-04-02 | 1987-10-12 | Hitachi Ltd | Recording and reproducing device for video signal |
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