SU464012A1 - Magnetic recording and playback device - Google Patents
Magnetic recording and playback deviceInfo
- Publication number
- SU464012A1 SU464012A1 SU1887820A SU1887820A SU464012A1 SU 464012 A1 SU464012 A1 SU 464012A1 SU 1887820 A SU1887820 A SU 1887820A SU 1887820 A SU1887820 A SU 1887820A SU 464012 A1 SU464012 A1 SU 464012A1
- Authority
- SU
- USSR - Soviet Union
- Prior art keywords
- magnetic recording
- playback device
- phase
- pulses
- channel
- Prior art date
Links
Landscapes
- Signal Processing For Digital Recording And Reproducing (AREA)
Description
33
тывает импульс вс кий раз, когда амплитуда сигнала уменьшаетс по сравнению с некоторым , заведомо выбранным уровнем. В дальнейшем эти импульсы используютс в декодере дл обнаружени ошибок.a pulse is emitted any time when the amplitude of the signal is reduced in comparison with a certain, obviously chosen level. These pulses are then used in the decoder to detect errors.
Предмет изобретени Subject invention
Устройство дл магнитной записи и воспроизведени цифровой информации методом фазовой манипул ции, содержашее генератор тактовых импульсов и фазовый манипул тор в канале записи, а та1кже соединенные последовательно формирователь и фазовый детектор в канале воспроизведени , отличаю4A device for magnetic recording and reproduction of digital information using phase-shift keying, a clock pulse generator and a phase key switch in the recording channel, and also connected in series to the driver and the phase detector in the playback channel.
щеес тем, что, с целью повышени точности выделени импульсов синхронизации кодовых групп и увеличени достоверности записываемой информации, канал записи снабжен последовательно соединенными блоком изменени временного масштаба с сумматором, св занным с фазовым манипул тором, и генератором импульсов синхронизации кодовых групп, включенных между генератором тактовых импульсов и указанным сумматором, а канал воспроизведени - последовательно соединенными корректором переходной характеристики , блоком выделени выпадений и декодером , два последних из которых подключены параллельно формирователю и фазовому детектору.This is so that, in order to increase the accuracy of the allocation of synchronization pulses of code groups and increase the reliability of the recorded information, the recording channel is equipped with a series-connected time-varying unit with an adder connected to the phase manipulator and a synchronization generator of code groups connected between clock generators pulses and the specified adder, and the playback channel is sequentially connected by a transient response corrector, a block of precipitation and deco The latter, the last two of which are connected in parallel to the driver and the phase detector.
Фиг 1Fig 1
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SU1887820A SU464012A1 (en) | 1973-02-28 | 1973-02-28 | Magnetic recording and playback device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SU1887820A SU464012A1 (en) | 1973-02-28 | 1973-02-28 | Magnetic recording and playback device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| SU464012A1 true SU464012A1 (en) | 1975-03-15 |
Family
ID=20543822
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| SU1887820A SU464012A1 (en) | 1973-02-28 | 1973-02-28 | Magnetic recording and playback device |
Country Status (1)
| Country | Link |
|---|---|
| SU (1) | SU464012A1 (en) |
-
1973
- 1973-02-28 SU SU1887820A patent/SU464012A1/en active
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