发明名称 |
Digital information recording apparatus, reproducing apparatus and transmitting apparatus |
摘要 |
A digital information recording apparatus includes a recording circuit for recording information of a retention period included in the digital information and indicating a period for permitting the digital information to be held in the recording medium, starting with a time at which the digital information is recorded on the recording medium; and information of a playback permission period included in the digital information and indicating a period for permitting the digital information to be played back starting with a time at which the information is reproduced initially following recording of the digital information on the recording medium, permitting temporary recording or copying for the information permitted for copy never or copy one generation. |
申请公布号 |
US8311389(B2) |
申请公布日期 |
2012.11.13 |
申请号 |
US20070834350 |
申请日期 |
2007.08.06 |
申请人 |
OKAMOTO HIROO;OWASHI HITOAKI;YOSHIOKA ATSUSHI;HITACHI, LTD. |
发明人 |
OKAMOTO HIROO;OWASHI HITOAKI;YOSHIOKA ATSUSHI |
分类号 |
H04N5/91;H04N9/80;G06F21/24;G11B19/06;G11B19/12;G11B20/10;G11B27/00;H04N5/76;H04N5/913;H04N5/92;H04N7/08;H04N7/081 |
主分类号 |
H04N5/91 |
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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