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    • 62. 发明授权
    • Apparatus for receiving broadcasting signals
    • 用于接收广播信号的装置
    • US6144707A
    • 2000-11-07
    • US59306
    • 1998-04-14
    • Tadao YoshidaTadashi Okamoto
    • Tadao YoshidaTadashi Okamoto
    • H04B1/16H04H20/00H04H40/18H04J11/00H04L27/06H04H5/00
    • H04H60/27H04H40/18H04H2201/20
    • An apparatus for receiving broadcasting signals, which includes a tuner for receiving a digital audio broadcasting signal, a data demodulating portion for obtaining time interleaved information data based on the digital audio broadcasting signal received by the tuner, a time de-interleaving portion for causing the time interleaved information data to be subjected to a time de-interleaving arrangement, an audio signal reproducing portion for obtaining a reproduced audio signal based on time de-interleaved information data obtained from said time de-interleaving portion, a RAM for storing unit data constituting the time interleaved information data therein and reading stored unit data therefrom when the time interleaved information data are subjected to the time de-interleaving arrangement, and a memory control portion for controlling storage of the unit data in the RAM and for reading the stored unit data from the RAM and operative to utilize a part of the RAM which is not used for storing and reading the unit data for storing data other than the unit data therein and reading stored data therefrom.
    • 一种用于接收广播信号的装置,包括用于接收数字音频广播信号的调谐器,用于基于由调谐器接收的数字音频广播信号获得时间交织的信息数据的数据解调部分,用于使得 要进行时间解交织装置的时间交错信息数据,用于基于从所述时间解交织部分获得的时间去交织信息数据获得再现音频信号的音频信号再现部分,用于存储构成 其中时间交织的信息数据在其中并且当时间交错信息数据经受时间解交织装置时从其读取存储的单元数据;以及存储器控制部分,用于控制单元数据在RAM中的存储和读取存储的单元数据 从RAM中操作以利用不用于存储的RAM的一部分 读取用于存储除了单元数据之外的数据的单元数据并从其读取存储的数据。
    • 66. 发明授权
    • Optical disc recording and/or reproducing apparatus having a buffer
memory to accommodate track jumps
    • 具有缓冲存储器以容纳轨道跳跃的光盘记录和/或再现设备
    • US5317553A
    • 1994-05-31
    • US745486
    • 1991-08-15
    • Norio OhgaKatsuaki TsurushimaTadao Yoshida
    • Norio OhgaKatsuaki TsurushimaTadao Yoshida
    • G11B20/12G11B7/00G11B7/004G11B7/09G11B11/105G11B20/00G11B20/10G11B21/08G11B27/00G11B27/19G11B27/24G11B27/30G11B27/36
    • G11B20/10527G11B11/10502G11B11/10595G11B20/00007G11B27/19G11B27/24G11B27/3063G11B27/36G11B7/004G11B7/0946G11B2020/10592G11B2220/20G11B2220/216G11B2220/2525G11B2220/2545G11B27/3027
    • A disc-shaped recording medium and a recording/reproducing apparatus employing the disc-shaped recording medium as a recording medium, are disclosed. The recording medium has a diameter of not more than 80 mm, and a recording track is formed on the recording medium with a track pitch of approximately 1.6 .mu.m. Information in excess of 130 Mbytes is recorded in a data compressed state on the recording track and the recording medium is rotationally driven at a constant linear velocity for recording and optically reproducing the information. The recording/reproducing apparatus employing the disc-shaped recording medium as a recording medium includes a buffer memory between a data compressing circuit for compressing input digital data and a recording encoding circuit for processing the compressed data by modulation suitable for recording, as long as a recording system of the apparatus is concerned, and a buffer memory between a playback decoding circuit for processing the compressed data by error correction decoding and demodulation complementary to the modulation and a data expansion circuit for expanding the compressed data to the original state. By suitably selecting the capacity of the buffer memories, recording and reproduction may continue satisfactorily even if the scanning position of the recording head and the optical head undergoes track jump during recording or reproduction.
    • 公开了一种盘形记录介质和采用盘形记录介质作为记录介质的记录/再现装置。 记录介质的直径不大于80mm,并且记录轨道形成在轨道间距大约为1.6μm的记录介质上。 在记录磁道上以数据压缩状态记录超过130M字节的信息,并且以恒定的线速旋转驱动记录介质以进行记录和光学再现信息。 采用盘形记录介质作为记录介质的记录/再现装置包括用于压缩输入数字数据的数据压缩电路和用于通过适于记录的调制来处理压缩数据的记录编码电路之间的缓冲存储器,只要 关于该装置的记录系统以及用于通过纠错解码和与调制互补的解调来处理压缩数据的重放解码电路之间的缓冲存储器和用于将压缩数据扩展到原始状态的数据扩展电路。 通过适当地选择缓冲存储器的容量,即使记录头和光头的扫描位置在记录或再现期间经历轨迹跳跃,记录和再现可以令人满意地继续。