SU551690A1 - Method of recording and reproducing digital information on magnetic media - Google Patents
Method of recording and reproducing digital information on magnetic mediaInfo
- Publication number
- SU551690A1 SU551690A1 SU2323772A SU2323772A SU551690A1 SU 551690 A1 SU551690 A1 SU 551690A1 SU 2323772 A SU2323772 A SU 2323772A SU 2323772 A SU2323772 A SU 2323772A SU 551690 A1 SU551690 A1 SU 551690A1
- Authority
- SU
- USSR - Soviet Union
- Prior art keywords
- recording
- digital information
- magnetic media
- reproducing digital
- plot
- Prior art date
Links
Landscapes
- Signal Processing For Digital Recording And Reproducing (AREA)
Description
(S4) СПОСОБ ЗАПИСИ И ВОСПРОИЗВЕДЕНИЯ ЦИФРОВОЙ ИНФОРМАЦИИ НА МАГНИТНОМ HOCMTEJffi(S4) METHOD OF RECORDING AND REPRODUCTION OF DIGITAL INFORMATION ON MAGNETIC HOCMTEJffi
(эпюра 2) и инвертированием (эпюра 3). В процессе воспроизведешш на сигнал могут накладыва-тьс посто нные или полученные в тракте аппарата магнитной записи помехи, которые снижают достоверность воспроизводимой информации. Воспроизведанный неинвертированный сигнал интегрируетс в течении, например, второго полупериода несущей частоты, который принимают за предыдуидай, а инвертированньш - в течении последунндего полупериода этой же частоты. В результате интегриров% 11ИЯ за период несущей частоты получают напр жение , близкое к нулю (при коде нулей) и к другому, отличному от нул , значению (при коде единиц), что соответствует эпюре 4. При этом действие аддитивного шума сводитс к минимуму. Ддлее интег{жрованное значение сравнивают с заданным уровнем (эпюра 5) и в случае выхода интегрированного значени за пределы интервала выдел ют код единиц , а в нахождени этого значени ыгутри интервала - код нулей. Результат изображен на эпюре 6.(plot 2) and invert (plot 3). In the process of reproducing a signal, interference may be superimposed either permanently or received in the path of the magnetic recording apparatus, which reduce the reliability of the reproduced information. The reproduced non-inverted signal is integrated during, for example, the second half-period of the carrier frequency, which is taken as the previous one, and the inverted one - during the next half-period of the same frequency. As a result, the% 11IRI integrators for the period of the carrier frequency receive a voltage close to zero (with the code of zeros) and to a value other than zero, (with the code of units), which corresponds to the plot 4. At the same time, the effect of additive noise is minimized. Next, the integrated value is compared with a predetermined level (plot 5) and in case the integrated value goes beyond the interval, the code of units is allocated, and the code of zeros is found in finding the value of the interval interval. The result is depicted in plot 6.
Таким образом попыщаетс достоверность записываемой и воспроизводимой информации и существенно снижаетс веро тность сбо информадни при наличии аддитивных помех.In this way, the reliability of the recorded and reproducible information is boosted and the probability of a loss of information is significantly reduced in the presence of additive interference.
7 7
Claims (3)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SU2323772A SU551690A1 (en) | 1976-02-17 | 1976-02-17 | Method of recording and reproducing digital information on magnetic media |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SU2323772A SU551690A1 (en) | 1976-02-17 | 1976-02-17 | Method of recording and reproducing digital information on magnetic media |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| SU551690A1 true SU551690A1 (en) | 1977-03-25 |
Family
ID=20648675
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| SU2323772A SU551690A1 (en) | 1976-02-17 | 1976-02-17 | Method of recording and reproducing digital information on magnetic media |
Country Status (1)
| Country | Link |
|---|---|
| SU (1) | SU551690A1 (en) |
-
1976
- 1976-02-17 SU SU2323772A patent/SU551690A1/en active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JPS5341921A (en) | Method of reproducing video signals recorded on respective tracks of recording carrier | |
| KR840000140A (en) | Magnetic recording method | |
| ES456757A1 (en) | Method and apparatus for increasing the recording capacity of a disk | |
| DE59104275D1 (en) | METHOD AND DEVICE FOR RECORDING AND / OR PLAYING BACK DIGITAL DATA ON A RECORDING MEDIUM AND RECORDING MEDIUM. | |
| ATE48489T1 (en) | METHOD AND APPARATUS FOR RECORDING AND/OR REPRODUCTION OF SIGNALS ON/FROM A TAPE-FORM RECORDING CARRIER. | |
| SU551690A1 (en) | Method of recording and reproducing digital information on magnetic media | |
| KR840003178A (en) | Video and audio signal recording device | |
| JPS55113175A (en) | Information signal recording medium and its recording system | |
| KR910005241A (en) | Recording medium, signal recording method and signal reproduction method | |
| JPH0619903B2 (en) | Data punching circuit | |
| ATE20985T1 (en) | DEVICE FOR PLAYBACK FROM A RECORDING MEDIA. | |
| DE3376037D1 (en) | Apparatus for reproducing a digital signal recorded with several heads | |
| SU514329A1 (en) | Device for recording information | |
| SU896687A1 (en) | Device for recording onto and reproducing from magnetic disks | |
| SU471602A1 (en) | Method of recording and reproducing digital information | |
| SU540283A1 (en) | Device for reproducing signals from magnetic media | |
| JPS5542337A (en) | Magnetic recording reproducing device | |
| SU853652A1 (en) | Device for reproduction from magnetic record carrier | |
| SU585527A1 (en) | Apparatus for magnetic recording/reproducing of binary signals | |
| SU672646A1 (en) | Apparatus for magnetic recording and reproducing of information | |
| SU892468A1 (en) | Method of magnetic recording and reproducing of digital information | |
| JPS5477116A (en) | Data recording apparatus | |
| JPS59129904A (en) | Magnetic recording and reproducing system | |
| JPS5277713A (en) | Signal recording and reproduction system | |
| JPS53115209A (en) | Magnetic recording method |