JPS5514513A - Recording and reproducing unit for digital signal - Google Patents
Recording and reproducing unit for digital signalInfo
- Publication number
- JPS5514513A JPS5514513A JP8641278A JP8641278A JPS5514513A JP S5514513 A JPS5514513 A JP S5514513A JP 8641278 A JP8641278 A JP 8641278A JP 8641278 A JP8641278 A JP 8641278A JP S5514513 A JPS5514513 A JP S5514513A
- Authority
- JP
- Japan
- Prior art keywords
- pulse
- synchronizing
- synchronism
- clock
- counts
- 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
- Signal Processing For Digital Recording And Reproducing (AREA)
- Synchronisation In Digital Transmission Systems (AREA)
Abstract
PURPOSE: To prevent the out of synchronism of VTR reproduction for digital data, by using the synchronizing pulse of the rotary head as the reference of leading-in.
CONSTITUTION: SYNC pulse is generated when the beginning end pulse each track from the terminal 33 to the synchronizing pattern coincidence circuit 32 which counts the set value and is driven with the clock from the terminal 33 and the reproducing synchronizing pattern every data section are in agreement. The pulse generator 36 making correction by taking this pulse as lead-in, counts the clock to produce the synchronizing pulse, and the synchronizing pulse only having no out of synchronism produced by the correction pulse generator 35 counting the clock is outputted via the AND gates 41, 39, FF 40 and OR gate 45, which are opened at the window pulse period produced by the window signal generator 34 taking the synchronizing pulse of the rotary head as lead-in. Accordingly, even if there is missing in the synchronizing pattern such as dropout, the synchronizing pulse without of synchronism can be formed to enable to reproduce the digital data excellent without out of synchronism.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8641278A JPS5514513A (en) | 1978-07-14 | 1978-07-14 | Recording and reproducing unit for digital signal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8641278A JPS5514513A (en) | 1978-07-14 | 1978-07-14 | Recording and reproducing unit for digital signal |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5514513A true JPS5514513A (en) | 1980-02-01 |
Family
ID=13886145
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP8641278A Pending JPS5514513A (en) | 1978-07-14 | 1978-07-14 | Recording and reproducing unit for digital signal |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5514513A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57179917A (en) * | 1981-04-24 | 1982-11-05 | Akai Electric Co Ltd | Malfunction preventing device in pcm signal reproducing system |
| FR2544145A1 (en) * | 1983-04-06 | 1984-10-12 | Ampex | METHOD AND DEVICE FOR SYNCHRONIZING DIGITAL SIGNALS FOR MAGNETIC RECORDERS WITH ROTATING HEADS |
| DE10224223A1 (en) * | 2002-05-31 | 2003-12-11 | Mann & Hummel Filter | Filter element, in particular for filtering liquids from a gas stream |
| US7449144B2 (en) * | 2002-01-19 | 2008-11-11 | Deutsche Carbone Ag | Process for manufacturing a sliding contact piece for medium to high current densities |
-
1978
- 1978-07-14 JP JP8641278A patent/JPS5514513A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57179917A (en) * | 1981-04-24 | 1982-11-05 | Akai Electric Co Ltd | Malfunction preventing device in pcm signal reproducing system |
| FR2544145A1 (en) * | 1983-04-06 | 1984-10-12 | Ampex | METHOD AND DEVICE FOR SYNCHRONIZING DIGITAL SIGNALS FOR MAGNETIC RECORDERS WITH ROTATING HEADS |
| US7449144B2 (en) * | 2002-01-19 | 2008-11-11 | Deutsche Carbone Ag | Process for manufacturing a sliding contact piece for medium to high current densities |
| DE10224223A1 (en) * | 2002-05-31 | 2003-12-11 | Mann & Hummel Filter | Filter element, in particular for filtering liquids from a gas stream |
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