发明授权
US5761218A Method of and apparatus for interpolating digital signal, and apparatus
for and methos of recording and/or playing back recording medium
失效
用于内插数字信号的方法和装置，以及记录和/或播放记录介质的装置和方法
- 专利标题： Method of and apparatus for interpolating digital signal, and apparatus for and methos of recording and/or playing back recording medium
- 专利标题（中）： 用于内插数字信号的方法和装置，以及记录和/或播放记录介质的装置和方法
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申请号： US682563申请日： 1996-09-23
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公开(公告)号： US5761218A公开(公告)日： 1998-06-02
- 发明人: Yasuhiro Ogura
- 申请人： Yasuhiro Ogura
- 申请人地址： JPX Tokyo
- 专利权人： Sony Corporation
- 当前专利权人： Sony Corporation
- 当前专利权人地址： JPX Tokyo
- 优先权： JPX6-299814 19941202; JPX7-059225 19950317
- 主分类号： G11B20/10
- IPC分类号： G11B20/10 ; G11B20/18 ; H04B14/04 ; G11B20/24 ; H04B15/00
摘要：
An apparatus and method for interpolating a digital signal where an input data signal from a data input terminal 1 is supplied through a memory 2 to an FIR low-pass digital filter 4. The memory 2 is controlled by a control circuit 6 to supply data preceding and following data which have suffered an error to the digital filter 4 to extract values A, and B. The values A, and B are calculated by an interpolation data generating circuit 7 to generate a value Y0. The data preceding and following data which have suffered an error is supplied to the digital filter 4 to extract a value A0. To the value A0, there is added values Bn calculated in advance by supplying all interpolation data which the error portion can take to an arbitrary position of the digital filter 4. The sum is compared with the value Y0. Interpolation data is generated according to a value Bn at which the sum is closest to the value Y0, and interpolation data is delivered from a data selector 3 to a data output terminal 8. This arrangement is capable of interpolating a digital signal digitized in an arbitrary small number of bits.