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    • 7. 发明授权
    • Recording and/or reproducing apparatus for recording and/or reproducing
image data compressed according to different compressing methods
    • 用于记录和/或再现根据不同压缩方法压缩的图像数据的记录和/或再现装置
    • US5585933A
    • 1996-12-17
    • US357156
    • 1994-12-15
    • Kenji IchigeTakao AraiMasuo OkuHiroo Okamoto
    • Kenji IchigeTakao AraiMasuo OkuHiroo Okamoto
    • H04N5/92H04N5/926H04N5/94H04N19/50H04N19/65H04N19/89H04N19/895H04N19/91H04N5/76
    • H04N5/9264H04N5/94
    • A recording and/or reproducing apparatus for recording and/or reproducing image signals compressed according to different compressing methods. This recording and/or reproducing apparatus includes a compressing circuit for compressing first image data according to a first image data compressing method, a selecting circuit supplied with the first image data thus compressed and encoded by the compressing circuit and second image data compressed and encoded according to a second image data compressing method and selecting any one of the first and second compressed image data, and a first error correction encoding circuit for error correction encoding the selected compressed image data. The recording and/or reproducing apparatus further includes a recording and/or reproducing circuit for recording and/or reproducing the error correction encoded data on and/or from a recording medium, a first error correction decoding circuit for error correction decoding the compressed image data reproduced by the recording and/or reproducing circuit, an image data expanding circuit for expanding the compressed image data that has been error-corrected by the error correction decoding circuit, and an output circuit for outputting the first image data expanded by the image data expanding circuit. The second image data has a bit rate not greater than that of the first image data.
    • 一种用于记录和/或再现根据不同压缩方法压缩的图像信号的记录和/或再现装置。 该记录和/或再现装置包括用于根据第一图像数据压缩方法压缩第一图像数据的压缩电路,提供有由压缩电路压缩和编码的第一图像数据的选择电路和根据 第二图像数据压缩方法,并且选择第一和第二压缩图像数据中的任何一个,以及用于对所选择的压缩图像数据进行纠错编码的第一纠错编码电路。 记录和/或再现装置还包括用于在记录介质上和/或从记录介质记录和/或再现纠错编码数据的记录和/或再现电路,用于对压缩图像数据进行纠错解码的第一纠错解码电路 由记录和/或再现电路再现的图像数据扩展电路,用于扩展由纠错解码电路进行了纠错的压缩图像数据,以及输出电路,用于输出由图像数据扩展扩展的第一图像数据 电路。 第二图像数据具有不大于第一图像数据的比特率。