Method for using audio and video devices and audio and video device system
    2.
    发明公开
    Method for using audio and video devices and audio and video device system 有权
    AnwendungsverfahrenfürAudio- undVideogerätesowie Audio- undVideogerätesystem

    公开(公告)号:EP0912051A2

    公开(公告)日:1999-04-28

    申请号:EP98308590.3

    申请日:1998-10-21

    申请人: HITACHI, LTD.

    IPC分类号: H04N5/782

    摘要: A plurality of devices and a device system are disclosed, in which a plurality of input devices (100; 1701, 1704, 1706; 2210; 4700; 5704, 5706) generate an input AV signal, a related device (110; 1702, 1703, 1705; 2220, 2230; 4810; 5702, 5703, 5705) records and reproduces the AV signal, and a display device (120; 1707; 2240, 2250; 4820; 5707) displays the AV signal. The input devices, the related device and the display device are interconnected to configure an AV system having a bus for transmitting or receiving the AV signal and management information. The related device of the AV system includes a recording medium for recording the AV signal, and the input devices transmit to the related device a request to secure a recording area on the recording medium.

    摘要翻译: 公开了多个设备和设备系统,其中多个输入设备(100; 1701,1704,1706; 2210; 4700; 5704,5706)生成输入AV信号,相关设备(110; 1702,1703 ,1705; 2220,2230; 4810; 5702,5703,5705)记录和再现AV信号,并且显示装置(120; 1707; 2240,2250; 4820; 5707)显示AV信号。 输入设备,相关设备和显示设备互连以配置具有用于发送或接收AV信号的总线的AV系统和管理信息。 AV系统的相关设备包括用于记录AV信号的记录介质,并且输入设备向相关设备发送保护记录介质上的记录区域的请求。

    Information recording media, optical disc and playback system
    6.
    发明公开
    Information recording media, optical disc and playback system 失效
    Informationsaufzeichnungsträger,optische Platten und Wiedergabesystem。

    公开(公告)号:EP0643391A1

    公开(公告)日:1995-03-15

    申请号:EP94113942.0

    申请日:1994-09-06

    申请人: HITACHI, LTD.

    摘要: A CD-ROM (4 in Fig. 1) is provided with an area for forming a character/graphic pattern (14). The character/graphic pattern (14) is formed in such a way that data, which generate on the CD-ROM (4) two sorts of pit patterns having average reflectances different from each other to a perceptible extent, are respectively recorded inside and outside the character/graphic pattern (14). Unless an illegal copy disc is produced by duplicating the legal original disc of the CD-ROM (4) at a very high precision, the character/graphic pattern of the copy disc is invisibly deformed by the discrepancy between the arrangements of the pit patterns of the copy disc and the original disc (4).

    摘要翻译: CD-ROM(图1中的4)设置有用于形成字符/图形(14)的区域。 字符/图形(14)形成为使得在CD-ROM(4)上生成具有彼此不同的平均反射度的两种凹坑图案的数据到可察觉的程度,分别被记录在内部和外部 字符/图形(14)。 除非通过以非常高的精度复制CD-ROM(4)的合法原始光盘来产生非法复制光盘,否则复制光盘的字符/图形将由于凹坑图案的布置之间的差异而不可见地变形 复印光盘和原始光盘(4)。