Digital signal recording method and recording apparatus thereof
    71.
    发明授权
    Digital signal recording method and recording apparatus thereof 失效
    数字信号记录方法及其记录装置

    公开(公告)号:US5878187A

    公开(公告)日:1999-03-02

    申请号:US884753

    申请日:1997-06-30

    摘要: An input digital signal is recorded on inclined tracks on a magnetic tape. The tape has a length L divided quarterly. A leading portion L/4 is reserved for general data, while the remaining portions are reserved for continuous data. The general and continuous data are recorded as SYNC blocks on different tracks. A number of general data SYNC blocks of one track from a basic unit which is divided into sub-units. The general data sub-units are arranged in the same format as the continuous audio data such that the general data is recorded in the same format as the continuous data. The data rates of the input digital signal which includes the general and continuous data are supplied to a mechanism controller which controls a buffer, a frame segmenting circuit and a tape head mechanism according to the data rates of the general and continuous data such that the data is recorded at a standard rate. In the alternative, the data may be recorded at the standard rate by forming the data into packets to be recorded and controlling the number of bytes in the packets.

    摘要翻译: 输入数字信号记录在磁带上的倾斜磁道上。 磁带的长度L是每季度划分的。 前导部分L / 4被保留用于一般数据,而其余部分被保留用于连续数据。 一般和连续数据在不同的轨道上记录为SYNC块。 从基本单元的一个轨道的多个通用数据SYNC块被分成子单元。 一般数据子单元以与连续音频数据相同的格式布置,使得通用数据以与连续数据相同的格式记录。 包括一般和连续数据的输入数字信号的数据速率被提供给机构控制器,该机构控制器根据一般和连续数据的数据速率来控制缓冲器,帧分割电路和磁头机构,使得数据 以标准费率记录。 在替代方案中,数据可以通过将数据形成要记录的数据包并且控制数据包中的字节数来以标准速率记录。

    Method and apparatus for recording video signals on a record medium
    75.
    发明授权
    Method and apparatus for recording video signals on a record medium 失效
    用于在记录介质上记录视频信号的方法和装置

    公开(公告)号:US5606422A

    公开(公告)日:1997-02-25

    申请号:US441995

    申请日:1995-05-16

    CPC分类号: H04N5/9264 H04N9/8047

    摘要: Methods and apparatus are provided for recording video signals in a plurality of tracks on a recording medium. In certain embodiments, first and second video signal intervals include respective first and second common sub-area signals representing at least one common sub-area of a video screen. The common sub-area signals of the first and second video signal intervals are recorded at respectively different locations within the plurality of tracks. In certain embodiments, component color video signals including luminance signals and first and second color difference signals are divided into a plurality of discrete cosine transformation (DCT) blocks and blocks representing common respective subdivisions of a video screen are assembled into corresponding macro blocks. Adjacent macro blocks are assembled into super macro blocks which, in turn, are arranged in a shuffled sequence relative to the positions of their subdivisions on the video screen for recording in the shuffled sequence. In certain embodiments, digital video signals representing a video screen are recorded in a plurality of tracks on a recording medium after dividing the digital video signals into a plurality of macro blocks assembled into sub-area groups of the video screen. The sub-area groups are shuffled by forming a sequence of track units each including a plurality of the sub-area groups one each from a respective horizontal division of the video screen. Each track unit is recorded in a respective one of a plurality tracks on the recording medium.

    摘要翻译: 提供了用于在记录介质上的多个磁道中记录视频信号的方法和装置。 在某些实施例中,第一和第二视频信号间隔包括表示视频屏幕的至少一个公共子区域的相应的第一和第二公共子区域信号。 第一和第二视频信号间隔的公共子区域信号被记录在多个轨道内的不同位置处。 在某些实施例中,包括亮度信号和第一和第二色差信号的分量彩色视频信号被分成多个离散余弦变换(DCT)块,并且表示视频屏幕的共同相应细分的块被组合成相应的宏块。 相邻宏块被组装成超宏块,其又相对于它们在视频屏幕上的子部分的位置以混洗顺序排列,以便以混洗序列记录。 在某些实施例中,表示视频屏幕的数字视频信号在将数字视频信号划分成组合成视频屏幕的子区域组的多个宏块之后被记录在记录介质上的多个磁道中。 通过形成一系列轨道单元来混合子区域组,每个轨道单元包括多个子区域组,每个子区域组分别来自视频屏幕的相应水平划分。 每个轨道单元被记录在记录介质上的多个轨道中的相应一个轨道中。

    Digital and analog interface for set back box
    77.
    发明授权
    Digital and analog interface for set back box 失效
    数字和模拟接口用于后箱

    公开(公告)号:US5553140A

    公开(公告)日:1996-09-03

    申请号:US250564

    申请日:1994-05-26

    摘要: A method and apparatus for interfacing digital and analog consumer electronic devices with digital and analog broadcast signals. The broadcast signals are received by electronic devices which tune the signals and provide them to set back boxes. The set back boxes process the signals and provide a plurality of signals to a plurality of electronic devices. Analog devices are provided with composite video signals, luminance video signals, chrominance video signals, and at least one audio signal while digital devices are provided with a digital video and audio signal. The processing performed by the set back boxes includes signal descrambling and decryption for analog and digital signals, error correction for digital signals, and intermediate frequency signal processing for analog signals. In addition, to interface digital signals, including high definition television (HDTV) signals, with analog electronic devices, the set back box decompresses the digital signal and converts it to an analog signal. A command line provides for communication between the set back box and the plurality of electronic devices.

    摘要翻译: 一种用于将数字和模拟消费电子设备与数字和模拟广播信号进行接口的方法和装置。 广播信号由调谐信号的电子设备接收并提供给设置箱。 集合箱处理信号并向多个电子设备提供多个信号。 在数字设备提供数字视频和音频信号的同时,模拟设备具有复合视频信号,亮度视频信号,色度视频信号和至少一个音频信号。 由后置盒执行的处理包括用于模拟和数字信号的信号解扰和解密,数字信号的纠错和用于模拟信号的中频信号处理。 另外,为了将数字信号(包括高分辨率电视(HDTV)信号)与模拟电子设备进行接口,设置后盒将数字信号解压缩并将其转换为模拟信号。 命令行提供了设置箱和多个电子设备之间的通信。

    Recording and/or reproducing apparatus with means for establishing an
after-recording area
    78.
    发明授权
    Recording and/or reproducing apparatus with means for establishing an after-recording area 失效
    具有用于建立后记录区域的装置的记录和/或再现装置

    公开(公告)号:US5426538A

    公开(公告)日:1995-06-20

    申请号:US026735

    申请日:1993-03-05

    摘要: Rotary head recording and/or reproducing apparatus in which respective oblique tracks on a record medium are scanned, each track having an information signal area in which information data is recorded and a track following area in which a tracking control pilot signal is recorded. The track following area precedes the information signal area; and in the preferred embodiment, an additional track following area follows the information signal area. The pilot signal is recorded in only a portion of the track following area, the remainder of which has timing sync data recorded therein. In an after-recording mode the timing sync data is reproduced, detected and used as a reference to define an after-record area.

    摘要翻译: 扫描记录介质上的各倾斜轨道的旋转头记录和/或再现装置,每个轨道具有记录信息数据的信息信号区域和记录跟踪控制导频信号的跟踪区域。 轨道跟随区域在信息信号区域之前; 并且在优选实施例中,附加轨道跟随区域在信息信号区域之后。 导频信号仅记录在磁道跟随区域的一部分中,其余部分具有记录在其中的定时同步数据。 在后续记录模式中,定时同步数据被再现,检测并用作参考以定义后记录区域。

    Tracking control apparatus of rotary head type recording unit using
pilot signals of different frequencies and different formats
    80.
    发明授权
    Tracking control apparatus of rotary head type recording unit using pilot signals of different frequencies and different formats 失效
    使用不同频率和不同格式的导频信号的旋转磁头型记录装置的跟踪控制装置

    公开(公告)号:US5402281A

    公开(公告)日:1995-03-28

    申请号:US29583

    申请日:1993-03-11

    摘要: A tracking control apparatus for a rotary head type recording unit having a first rotary head and a second rotary head for forming pairs of slant tracks on a magnetic type, each track having a head entering side tracking region and a head leaving side tracking region. First and second pilot signals of different frequencies are recorded in the head entering and head laving sides tracking region, with the first pilot signal being recorded at a predetermined position on the first track which precedes (in the track direction) the second pilot signal recorded at a predetermined position on the second track adjacent to the first track.

    摘要翻译: 一种用于旋转头型记录单元的跟踪控制装置,具有第一旋转头和第二旋转头,用于形成磁性对的倾斜轨道对,每个轨道具有头部进入侧跟踪区域和头部离开侧跟踪区域。 不同频率的第一和第二导频信号被记录在磁头进入和磁头分离侧跟踪区域中,其中第一导频信号被记录在第一磁道上的预定位置(在磁道方向上)记录在第二导频信号 在与第一轨道相邻的第二轨道上的预定位置。