利索-全球专利检索

  1. 登录
  2. 注册

搜索结果

16 条记录 (耗时 0.012 秒)

    Audio signal recording and playback apparatus of magnetic recording and playback apparatus
    1.
    发明公开
    Audio signal recording and playback apparatus of magnetic recording and playback apparatus 失效
    磁记录和再现装置Tonsignalaufzeichnungs-记录和再现装置。

    公开(公告)号：EP0470472A2

    公开(公告)日：1992-02-12

    申请号：EP91112691.0

    申请日：1991-07-29

    申请人： HITACHI, LTD.

    发明人： Azuma, Nobuo ,  Furuhata, Takashi ,  Watatani, Yoshizumi ,  Takahashi, Hiroaki ,  Takeda, Katsumi

    IPC分类号： H04N5/91

    CPC分类号： G11B27/036 ,  G11B27/032 ,  G11B2220/90 ,  H04N5/775 ,  H04N5/9202 ,  H04N5/928

    摘要： An audio signal recording and playback apparatus of a magnetic recording and playback apparatus operates to record and play back multiple audio signals together with a video signal in a first and second record areas (102, 103) formed in correspondence to audio signals of first and second sets each consisting of two channels. Among input stereo audio signals in four channels at most, two-channel signals pertinent to left and right side information are recorded as main audio signals in the first record area (102) and remaining two-channel signals are recorded selectively as ancillary audio signals in the second record area (103).

    摘要翻译： 磁性记录和重放装置的音频信号记录和重放装置操作来记录和对应于形成为第一和第二音频信号的第一和第二记录区（102，103）与视频信号一起重放的多个音频信号 设置了两个信道的每个由。 间输入的立体声音频信号划分成至多四个通道，两个信道信号相关的左，右侧的信息被记录为被选择性地记录为辅助音频信号在第一记录区域（102）和剩余的两个信道信号的主音频信号 所述第二记录区域（103）。

    Method and apparatus for PCM recording and reproducing audio signal
    5.
    发明公开
    Method and apparatus for PCM recording and reproducing audio signal 失效
    方法和装置用于记录和再现的PCM音频信号。

    公开(公告)号：EP0222386A2

    公开(公告)日：1987-05-20

    申请号：EP86115708.9

    申请日：1986-11-12

    申请人： HITACHI, LTD.

    发明人： Arai, Takao ,  Kobayashi, Masaharu ,  Amada, Nobutaka ,  Yumde, Yasufumi ,  Takahashi, Hiroaki

    IPC分类号： G11B20/18 ,  G11B20/10

    CPC分类号： H04N5/928 ,  G11B20/10527 ,  G11B20/1809 ,  G11B2020/1087

    摘要： A PCM audio signal recording and reproducing apparatus samples an audio signal accompanying with a video signal, converts it to a PCM signal, adds an error detection correction data to a predetermined number of PCM data, forms a data frame by those signals, modulates it in accordance with a predetermined modulation system, and records the audio signal together with the video signal or singly on a record medium by using a rotary head type scanner. A digital signal processing circuit having a memory of a predetermined capacity is provided, and the number of digital data to be recorded in one data frame is varied in accordance with a difference between the number of input data of the digital audio signal to the digital signal processing circuit and the number of output data supplied to the record medium for recording. In the recording mode, the PCM audio signal is sectioned into blocks, a data block address signal is added to each block to indicate a relative order to other blocks and complete in one track, certain number of blocks are combined to form a block set for processing signals, and an identification signal completing in the block and an interleave block address signal for indicating a relative order to other blocks are added to each block.

    Apparatus for recording and reproducing a plurality of television signals of different systems
    7.
    发明公开
    Apparatus for recording and reproducing a plurality of television signals of different systems 失效
    用于记录和复制不同系统的多种电视信号的装置

    公开(公告)号：EP0417609A3

    公开(公告)日：1993-01-13

    申请号：EP90116999.5

    申请日：1990-09-04

    申请人： HITACHI, LTD.

    发明人： Takahashi, Hiroaki ,  Furuhata, Takashi

    IPC分类号： H04N9/79

    CPC分类号： H04N9/825 ,  H04N9/7925 ,  H04N9/7973

    摘要： There is provided a video signal recording and reproducing apparatus in which video signals based on a plurality of television systems in which the numbers of scanning lines and the frame frequencies are different are recorded by the same VTR. The numbers of effective pixels in one horizontal scanning period and the numbers of effective scanning lines per frame which are based on the respective television systems are made coincident. Only the effective scanning lines are recorded. The rotational speed of the cylinder is also changed in proportion to the frame frequency and tape patterns are made coincident.

    Rotary head type PCM recording and reproduction method and system
    8.
    发明公开
    Rotary head type PCM recording and reproduction method and system 失效
    旋转头类型PCM记录和再现方法和系统

    公开(公告)号：EP0155664A3

    公开(公告)日：1986-05-28

    申请号：EP85103110

    申请日：1985-03-18

    申请人： HITACHI, LTD.

    发明人： Takahashi, Hiroaki ,  Kobayashi, Masaharu ,  Noguchi, Takaharu ,  Shibuya, Toshifumi ,  Arai, Takao

    IPC分类号： G11B20/18

    CPC分类号： G11B20/1809 ,  G11B20/10527

    摘要： A data recording/reproducing method and apparatus for' carrying out the method in a rotary head type PCM recording/reproducing apparatus including at least two magnetic heads (10, 11), a rotatable cylinder (9) having mounted thereon the magnetic heads in diametrical opposition at an angle of 180°, an A/D converter (6) for sampling an analog signal such as audio signal and converting it to a digital signal, and a signal processing circuit (7, 14) for adding the digital signal with an error detecting and correcting code, synchronizing signal and control signal, wherein the output of the signal processing circuit is recorded on a magnetic tape (12) or the signal recorded on the magnetic tape is reproduced. In recording operation, the odd-numbered sample data and the even-numbered sample data are discriminatively extracted and stored. The stored data corresponding to an amount of data outputted from the A/D converter (6) and completed within a predetermined time is selectively read out and supplied to the two heads to thereby record the data in such a manner that the odd-numbered data and the even-numbered data are recorded separately on the track basis (24, 25) or alternatively recorded separately on a preceding half (R-ODD, L-ODD) and a succeeding half (L-EVEN, R-EVEN) of each track. The error detecting and correcting code is prepared on the basis of the data to be recorded in each track. In reproduction, upon detection of drop-out of data from one of the two heads, the drop-out data is corrected through interpolation procedure to thereby reconstitute the original analog signal.

    Magnetic recording apparatus
    10.
    发明公开
    Magnetic recording apparatus 失效
    磁记录装置

    公开(公告)号：EP0488337A3

    公开(公告)日：1993-05-19

    申请号：EP91120462.6

    申请日：1991-11-29

    申请人： HITACHI, LTD.

    发明人： Azuma, Nobuo ,  Furuhata, Takashi ,  Takeda, Katsumi ,  Takahashi, Hiroaki

    IPC分类号： H04N9/79 ,  H04N5/782

    CPC分类号： H04N9/7921 ,  G11B15/07 ,  G11B15/087 ,  G11B33/10

    摘要： A magnetic recording apparatus of the rotary head helical scan type which can selectively record input information signals of a plurality of signal formats comprises an input signal kind discriminating circuit (13, 14, 18), a controller (18) for generating control output signals to set each section of the magnetic recording apparatus into a predetermined mode on the basis of a recording mode command, a recording signal processing circuit (15) which is respectively switched to a predetermined mode in accordance with an output signal of the controller (18), and a servo control circuit (8), wherein there is an effect such that one magnetic recording apparatus can automatically record the input signals of a plurality of formats such as NTSC signal, HD signal, and the like in the optimum mode by a simple and easy using method.