发明授权
US5825567A Apparatus for recording digital signals by controlling frequency
characteristics of digital signals utilizing bit extraction and
interleaved NRZI molulation
失效
用于通过利用位提取和交织的NRZI摩擦来控制数字信号的频率特性来记录数字信号的装置
- 专利标题： Apparatus for recording digital signals by controlling frequency characteristics of digital signals utilizing bit extraction and interleaved NRZI molulation
- 专利标题（中）： 用于通过利用位提取和交织的NRZI摩擦来控制数字信号的频率特性来记录数字信号的装置
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申请号： US674870申请日： 1996-07-02
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公开(公告)号： US5825567A公开(公告)日： 1998-10-20
- 发明人: Shinji Hamai , Masao Okabe , Yasunori Kawakami
- 申请人： Shinji Hamai , Masao Okabe , Yasunori Kawakami
- 申请人地址： JPX Osaka
- 专利权人： Matsushita Electric Industrial Co., Ltd.
- 当前专利权人： Matsushita Electric Industrial Co., Ltd.
- 当前专利权人地址： JPX Osaka
- 优先权： JPX4-278954 19921016; JPX4-321608 19921201; JPX4-321610 19921201; JPX4-321611 19921201
- 主分类号： G11B5/008
- IPC分类号： G11B5/008 ; G11B5/09 ; G11B5/592 ; G11B15/46 ; G11B20/10 ; G11B20/14
摘要：
When modulating by an interleaved NRZI technique by inserting one bit per every m bits of input data series, the frequency characteristics of bit rows varying by the polarity ("0" or "1") of the bit to be inserted are compared, and the bit row closer to the desired frequency characteristic is selected as the output series, so that recording is effected by controlling the frequency characteristics of the digital signal.
公开/授权文献
- US4698691A Halftone image processing method 公开/授权日：1987-10-06
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