发明名称 |
Method and apparatus for receiving and/or reproducing digital signals |
摘要 |
<p>A method and apparatus is provided for receiving and/or reproducing a digital signal, capable of efficiently recording a compressed, packeted digital signal (170-173) and inhibiting a copy thereof. An input packet signal is added (Fig. 9) with a time stamp indicating a relative time of an arrival of the packet, and the packet signals of digital information with the added time stamps are recorded at reduced intervals (Fig. 8(3)) therebetween. In reproducing, a packet interval adjusting circuit (Fig. 11) restores the original packet intervals in accordance with the time stamps, and then a time stamp change circuit (Fig. 9) changes at least one bit of the time stamp and thereafter outputs the digital information.</p> |
申请公布号 |
EP0740478(B1) |
申请公布日期 |
2002.08.28 |
申请号 |
EP19960106436 |
申请日期 |
1996.04.24 |
申请人 |
HITACHI, LTD. |
发明人 |
OWASHI, HITOAKI;OKAMOTO, HIROO;HOSOKAWA, KYOICHI;NOGUCHI, TAKAHARU |
分类号 |
H04B7/185;H04N5/00;H04N5/44;H04N5/761;H04N5/77;H04N5/913;H04N7/16;H04N7/24;H04N9/804;H04N21/2343;H04N21/2543;H04N21/4147;H04N21/43;H04N21/433;H04N21/434;H04N21/4367;H04N21/4385;H04N21/4405;H04N21/442;H04N21/4623;H04N21/472;H04N21/8355;H04N21/8547;(IPC1-7):H04N9/804 |
主分类号 |
H04B7/185 |
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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