发明申请
- 专利标题: Digital modulation apparatus and digital modulation method
- 专利标题(中): 数字调制装置及数字调制方式
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申请号: US10553215申请日: 2004-03-18
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公开(公告)号: US20070080833A1公开(公告)日: 2007-04-12
- 发明人: Hiroyuki Yabuno , Hironori Deguchi
- 申请人: Hiroyuki Yabuno , Hironori Deguchi
- 优先权: JP2003-134638 20030513
- 国际申请: PCT/JP04/03694 WO 20040318
- 主分类号: H03M5/00
- IPC分类号: H03M5/00 ; H03M7/00 ; H03M5/06
摘要:
A digital modulation apparatus capable of generating a modulated code so that binary slice is correctly performed when reproducing is provided. To achieve this, in a digital modulation apparatus (10A), a DSV change amount calculator (15) calculates change amounts (ΔDSVa, ΔDSVb) in DSVs of candidate modulated codes (CODEa, CODEb) generated by a modulated code generator (11). A modulated code determinator (13) compares the change amounts (ΔDSVa, ΔDSVb), and determines that the candidate modulated code having a smaller absolute value should be selected as a modulated code (CODE). A modulated code selector (14) selects one of the candidate modulated codes (CODEa, CODEb) which is determined by the modulated code determinator (13), and outputs the selected code as a modulated code (CODE) for source data (DATA).
公开/授权文献
- US07317408B2 Digital modulation apparatus and digital modulation method 公开/授权日:2008-01-08
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