Information recording and reproducing system

Abstract

Abstract PURPOSE:To attain reproduction as data with less edge shift by constituting a start timing mark representing the start of information decoding with a couple of divided block patterns respectively. CONSTITUTION:The start timing mark representing the information decoding start position is provided as a duplicated pattern to the leading and trailing of a reproduced waveform. The start timing mark detected from the front edge takes timewise preceding over the start timing mark detected the tail ridge. Then the mark detection pulse from the front edge is inputted to a delay element to select a pulse coincident timewise with the mark detection pulse from the tail ridge not delayed among delayed pulses outputted from an output terminal of the delay element. Through the operation above, a time being the time difference of substantial both detection pulses added with an error by the edge shift is obtained. The error time of the succeeding data string to the timing mark is corrected by selecting some output terminals of delay elements of other systems to adjust the time of the error due to the edge shift among the obtained time differences.

Inventors

• 👤 Atsushi Saito
• 👤 温 斉藤
• 👤 Takeshi Maeda
• 👤 武志 前田
• 👤 Hisataka Sugiyama
• 👤 久貴 杉山
• 👤 Kazuo Shigematsu
• 👤 和男 重松
• 👤 Kazuo Takasugi
• 👤 高杉　和夫

Bibliographic Details