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1. 发明公开

EP0614184A2 Digital recording and reproducing 失效
标题翻译： Digitale Aufzeichnung und Wiedergabe。
公开(公告)号：EP0614184A2
公开(公告)日：1994-09-07
申请号：EP94301411.8
申请日：1994-02-28
申请人： Samsung Electronics Co., Ltd.
发明人： Park, Sam-yong , Chang, Yong-deok
IPC分类号： G11B20/14 , G11B5/09 , H04L27/34
CPC分类号： G11B20/10 , G11B20/1496 , G11B20/1833
摘要： A digital signal magnetic recording and reproducing apparatus comprises a coding portion 10 for convolutionally coding input digital data, a modulating portion 20 for quadrature-amplitude-modulating and phase-shift-keying-modulating the convolutionally coded digital data, a pilot signal mixer 30 for generating a pilot signal and adding it to the modulated signal, a recording controller 40 for forming a magnetized signal suitable for a magnetic recording medium 52 from the modulated signal mixed with the pilot signal, a reproducing controller 60 for outputting a digital signal of which the distortion and deterioration produced in a transmission system are corrected, from the magnetized signal reproduced from the magnetic recording medium 52, a carrier wave restoring portion 70 for generating a clock signal having the carrier signal frequency by detecting a pilot signal from the reproduced magnetized signal, a demodulating portion 80 for demodulating the quadrature-amplitude-modulated signal output from the reproducing controller and a decoding portion 100 for outputting original digital data by Viterbi-decoding convolutionally coded data from the demodulating portion 80. The apparatus increases frequency utilization efficiency by adopting a multiple valued digital modulation method, is effective in recording at high density and is characterized in that the overall signal processing is carried out digitally.
摘要翻译：一种数字信号磁记录和再现装置，包括用于对输入数字数据进行卷积编码的编码部分10，用于正交幅度调制的调制部分20和对卷积编码数字数据进行相移键控调制的导频信号混合器30，产生导频信号并将其添加到调制信号中;记录控制器40，用于根据与导频信号混合的调制信号形成适合于磁记录介质52的磁化信号;再现控制器60，用于输出数字信号，通过从磁记录介质52再现的磁化信号来校正传输系统产生的失真和劣化，用于通过从再现的磁化信号检测导频信号来产生具有载波信号频率的时钟信号的载波恢复部分70，用于解调正交幅度调制的si的解调部分80 从再现控制器输出的声音输出和解码部分100，用于通过对来自解调部分80的卷积编码数据进行维特比解码来输出原始数字数据。该装置通过采用多值数字调制方式提高了频率利用效率，在高记录中有效并且其特征在于整体信号处理是以数字方式进行的。

2. 发明授权

EP0614184B1 Digital recording and reproducing 失效
标题翻译：数字记录和重放
公开(公告)号：EP0614184B1
公开(公告)日：1999-09-22
申请号：EP94301411.8
申请日：1994-02-28
申请人： SAMSUNG ELECTRONICS CO., LTD.
发明人： Park, Sam-yong , Chang, Yong-deok
IPC分类号： H04N5/926 , H04N5/922 , G11B20/14 , G11B5/09 , H04L27/34
CPC分类号： G11B20/10 , G11B20/1496 , G11B20/1833

3. 发明公开

EP0614184A3 Digital recording and reproducing 失效
标题翻译：数字记录和重放。
公开(公告)号：EP0614184A3
公开(公告)日：1996-03-06
申请号：EP94301411.8
申请日：1994-02-28
申请人： Samsung Electronics Co., Ltd.
发明人： Park, Sam-yong , Chang, Yong-deok
IPC分类号： G11B20/14 , G11B5/09 , H04L27/34
CPC分类号： G11B20/10 , G11B20/1496 , G11B20/1833
摘要： A digital signal magnetic recording and reproducing apparatus comprises a coding portion 10 for convolutionally coding input digital data, a modulating portion 20 for quadrature-amplitude-modulating and phase-shift-keying-modulating the convolutionally coded digital data, a pilot signal mixer 30 for generating a pilot signal and adding it to the modulated signal, a recording controller 40 for forming a magnetized signal suitable for a magnetic recording medium 52 from the modulated signal mixed with the pilot signal, a reproducing controller 60 for outputting a digital signal of which the distortion and deterioration produced in a transmission system are corrected, from the magnetized signal reproduced from the magnetic recording medium 52, a carrier wave restoring portion 70 for generating a clock signal having the carrier signal frequency by detecting a pilot signal from the reproduced magnetized signal, a demodulating portion 80 for demodulating the quadrature-amplitude-modulated signal output from the reproducing controller and a decoding portion 100 for outputting original digital data by Viterbi-decoding convolutionally coded data from the demodulating portion 80. The apparatus increases frequency utilization efficiency by adopting a multiple valued digital modulation method, is effective in recording at high density and is characterized in that the overall signal processing is carried out digitally.

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