发明名称 |
Digital/analogue converter |
摘要 |
A digital-to-analogue converter for use in a digitally-recorded-signal reproducing apparatus comprises a first constant current source, a switch for allowing the constant current of the first constant current source to flow therethrough for a period corresponding to the digital data, a second constant current source generating a current flowing in the direction opposite to that of the current generated by the first constant current source, a switch for allowing the current of the second constant current source to flow therethrough for a predetermined constant period, and an integrator, wherein the sum of the first and second constant currents is integrated by the integrator. The analogue signal outputted by the integrator has a center level in the vicinity of the ground potential level.
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申请公布号 |
US4571572(A) |
申请公布日期 |
1986.02.18 |
申请号 |
US19850715258 |
申请日期 |
1985.03.25 |
申请人 |
HITACHI, LTD. |
发明人 |
NODA, TSUTOMU;ISO, YOSHIMI;SATO, TETSUO |
分类号 |
G11B20/00;G11B20/10;H03M1/00;H03M1/82;(IPC1-7):H03M1/82 |
主分类号 |
G11B20/00 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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