JPS5758224A - Digital magnetic recording and reproducing device - Google Patents
Digital magnetic recording and reproducing deviceInfo
- Publication number
- JPS5758224A JPS5758224A JP13405880A JP13405880A JPS5758224A JP S5758224 A JPS5758224 A JP S5758224A JP 13405880 A JP13405880 A JP 13405880A JP 13405880 A JP13405880 A JP 13405880A JP S5758224 A JPS5758224 A JP S5758224A
- Authority
- JP
- Japan
- Prior art keywords
- output signal
- read
- pulse
- time
- 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
Classifications
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
- G11B20/20—Signal processing not specific to the method of recording or reproducing; Circuits therefor for correction of skew for multitrack recording
Landscapes
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Signal Processing For Digital Recording And Reproducing (AREA)
Abstract
PURPOSE:To prevent a read error caused by skew, by detecting a head pulse output signal of each word, after that, sampling a pulse output signal of each track at prescribed intervals for a constant time, and comparing the number of times of ''1'' with a reference value. CONSTITUTION:A head pulse output signal of each word is detected by a controlling circuit 1, and after that, a counting signal C and a discriminating signal (d) are outputted at a pulse interval being much shorter than the minimum pulse width of a read-out output signal, and also for a constant time being longer than the sum of the minimum pulse width of the read-out pulse output signal and the minimum skew time. In counting circuits 2-4, read-out pulse signals b0-b1 from each track are sampled by the counting signal (c), and the number of times of ''1'' is counted, respectively. According to such a constitution, a pulse train output time of the counting signal (c) is longer than a time which has added the minimum pulse width of the read-out pulse output signal from each track, and the maximum skew time, therefore, a read error caused by skew is prevented.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13405880A JPS5758224A (en) | 1980-09-25 | 1980-09-25 | Digital magnetic recording and reproducing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13405880A JPS5758224A (en) | 1980-09-25 | 1980-09-25 | Digital magnetic recording and reproducing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5758224A true JPS5758224A (en) | 1982-04-07 |
Family
ID=15119375
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP13405880A Pending JPS5758224A (en) | 1980-09-25 | 1980-09-25 | Digital magnetic recording and reproducing device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5758224A (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4960667A (en) * | 1972-10-13 | 1974-06-12 | ||
| JPS5437246U (en) * | 1977-08-15 | 1979-03-10 |
-
1980
- 1980-09-25 JP JP13405880A patent/JPS5758224A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4960667A (en) * | 1972-10-13 | 1974-06-12 | ||
| JPS5437246U (en) * | 1977-08-15 | 1979-03-10 |
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