公开(公告)号：US5587789A

公开(公告)日：1996-12-24

申请号：US227281

申请日：1994-04-13

申请人： Je H. Lee ,  Soo K. Kim ,  Sang J. Woo ,  Tae S. Yang

发明人： Je H. Lee ,  Soo K. Kim ,  Sang J. Woo ,  Tae S. Yang

IPC分类号： G11B20/10 ,  G11B5/008 ,  G11B5/02 ,  G11B5/09 ,  G11B15/12 ,  G11B15/18 ,  G11B15/467 ,  G11B15/48 ,  G11B15/52 ,  G11B20/12 ,  G11B27/00 ,  G11B27/10 ,  G11B27/30 ,  G11B27/32 ,  H04N5/76 ,  H04N5/7826 ,  H04N5/783 ,  H04N5/91 ,  H04N5/92 ,  H04N5/926 ,  H04N5/93 ,  H04N9/79 ,  H04N9/797 ,  H04N9/804 ,  H04N9/82

CPC分类号： H04N5/783 ,  G11B15/1875 ,  G11B27/005 ,  G11B27/107 ,  G11B27/3027 ,  G11B27/32 ,  G11B27/324 ,  G11B5/0086 ,  G11B5/09 ,  G11B5/5927 ,  H04N19/61 ,  H04N5/782 ,  H04N5/9262 ,  G11B15/125 ,  G11B15/4673 ,  G11B15/48 ,  G11B15/52 ,  G11B2220/90 ,  G11B2220/91 ,  H04N5/78206 ,  H04N5/78266 ,  H04N9/7973 ,  H04N9/8042 ,  H04N9/8205

摘要： An apparatus and method for controlling recording and reproduction in a video cassette tape recorder are disclosed apparatus is capable of, in a recording mode, separating specific data for speed-varied reproduction from compressed digital video signals, recording them on designated tracks, recording position information of the designated tracks on a control track by an index head or recording position information of recording position-synchronized blocks at the starting portions of the designated tracks recorded with the specific data, and in a speed-varied reproduction mode, controlling a capstan servo speed so as to maintain the travel of a magnetic tape at a normal speed and periodically or non-periodically accelerate or decelerate it where specific data for varied-speed have been recorded periodically or non-periodically on predetermined portions of tracks, thereby making heads travel repeatedly at the normal speed and the high speed and thereby detect continuously the specific tracks for varied-speed. A repeatability of reproduced video at a varied speed is obtained without any deterioration in picture quality, because of recording of the specific data for speed-varied reproduction and the continuous detection of the specific data in the speed-varied reproduction.

摘要翻译： 公开了一种用于控制盒式磁带录像机中的记录和再现的装置和方法，所述装置能够在记录模式下将压缩数字视频信号中的速度变化再现的特定数据分离，将其记录在指定轨道上，记录位置信息 在通过特定数据记录的指定轨道的起始部分处的索引头或记录位置同步块的记录位置信息在控制轨道上，并且在速度变化再现模式中，控制主导轴伺服速度 以便以正常速度保持磁带的行进，并且在轨道的预定部分上周期性地或非周期性地记录用于变速的特定数据的周期性或非周期性加速或减速，从而使头部重复行进 以正常速度和高速度，从而连续检测特定的tr 阿克斯变速。 由于记录速度变化再现的特定数据和在速度变化再现中连续检测特定数据，所以可以获得不同速度的再现视频的重复性，而不会降低图像质量。

公开(公告)号：US5532831A

公开(公告)日：1996-07-02

申请号：US208302

申请日：1994-03-10

申请人： Man C. Choi ,  Soo K. Kim ,  Je H. Lee ,  Tae S. Yang ,  Sang J. Woo

发明人： Man C. Choi ,  Soo K. Kim ,  Je H. Lee ,  Tae S. Yang ,  Sang J. Woo

IPC分类号： H04N9/83 ,  H04N5/76 ,  H04N5/92

CPC分类号： H04N9/833

摘要： A recording apparatus for a high definition video cassette recorder, comprises a tape discriminator for checking for the presence of a hole on a specified position of a tape to discriminate whether the tape is of the normal-VHS type or the super-VHS type, a clock signal generator for generating a clock signal of a desired period in response to an output signal from the tape discriminator, a frequency divider for frequency-dividing the clock signal from the clock signal generator by an integer N, a first switch for selecting either the clock signal from the clock signal generator or the frequency divided clock signal in response to the output signal from the tape discriminator, a video data separator for separating intra-frame data and inter-frame data from an input digital video signal in response to the clock signal selected by the first switch and outputting the separated intra-frame data, a second switch for selecting either the input digital video signal or the intra-frame data from the video data separator in response to the output signal from the tape discriminator, a video data formatter for formatting an output signal from the second switch in response to the clock signal from the first switch and the output signal from the tape discriminator, a recording amplifier for amplifying an output signal from the video data formatter, and a head for recording an output signal from the recording amplifier on the tape.

摘要翻译： 一种用于高清晰度录像机的记录装置，包括：鉴别器，用于检查在磁带的指定位置是否存在孔，以鉴别磁带是正常VHS型还是超VHS型， 时钟信号发生器，用于响应于来自带鉴别器的输出信号产生期望周期的时钟信号;分频器，用于将来自时钟信号发生器的时钟信号分频整数N;第一开关，用于选择 来自时钟信号发生器的时钟信号或分频时钟信号，响应于来自带鉴别器的输出信号，用于响应于时钟从帧内数据和帧间数据与输入数字视频信号分离的视频数据分离器 信号由第一开关选择并输出分离的帧内数据;第二开关，用于选择输入数字视频信号或帧内数据， 响应于来自带鉴别器的输出信号，视频数据分离器，用于响应于来自第一开关的时钟信号和来自带鉴别器的输出信号格式化来自第二开关的输出信号的视频数据格式化器，记录 用于放大来自视频数据格式器的输出信号的放大器，以及用于在磁带上记录来自记录放大器的输出信号的磁头。

公开(公告)号：US5357526A

公开(公告)日：1994-10-18

申请号：US997778

申请日：1992-12-28

申请人： Gook H. Jang ,  Tae S. Yang

发明人： Gook H. Jang ,  Tae S. Yang

IPC分类号： G06F11/10 ,  G11B20/00 ,  G11B20/18 ,  H03M13/00 ,  H03M13/15 ,  H03M13/27

CPC分类号： H03M13/151 ,  G11B20/00007 ,  G11B20/1809

摘要： A method for and an apparatus for correcting errors of compressed digital data, using a dual decoding system for correcting errors generated at the data by adding parity bits having an error correction capability for K symbols to the data fields of the data. Errors of up to K are corrected by the C.sub.1 field- and C.sub.2 field-decodings. After the error correction, a determination is made about the presence of errors in the corrected data so that an erroneous detection and an erroneous correction of errors are prevented, thereby minimizing an influence by an error propagation generated upon the extension of compressed data. The present invention achieves an improvement in error correcting capability for compressed digital image data.

摘要翻译： 一种用于校正压缩数字数据的误差的方法和装置，使用双重解码系统，用于通过将具有针对K个符号的纠错能力的奇偶校验位添加到数据的数据字段来校正在数据处产生的错误。 通过C1场和C2场解码校正高达K的错误。 在纠错之后，确定校正数据中存在错误，从而防止误差的错误检测和错误校正，从而最小化由扩展压缩数据产生的错误传播的影响。 本发明实现了压缩数字图像数据的纠错能力的改进。

公开(公告)号：US5448369A

公开(公告)日：1995-09-05

申请号：US195012

申请日：1994-02-14

申请人： Dong H. Lee ,  Seung I. Kim ,  Tae S. Yang ,  Choon Lee

发明人： Dong H. Lee ,  Seung I. Kim ,  Tae S. Yang ,  Choon Lee

IPC分类号： H04N5/92 ,  H04N5/926 ,  H04N5/931 ,  H04N17/06 ,  H04N5/76 ,  G11B5/00 ,  G11B5/035 ,  G11B5/09

CPC分类号： H04N5/9206 ,  H04N17/06 ,  H04N5/9264 ,  H04N5/9315 ,  H04N5/926

摘要： A signal characteristic variation apparatus for a high definition VCR in which a characteristic of a video signal is varied according to characteristics of a tape and a channel. A predetermined frequency band of test signal is recorded on the tape for recording the tape and channel characteristics in a recording mode. This enables the video signal to be recorded on the tape in the proper mode and permits, in the play-back mode, the tape and channel characteristics to be discriminated by detecting the test signal recorded on the tape. Therefore, the video signal can be played back from the tape with its frequency characteristic properly adjusted according to the discriminated tape and channel characteristics.

摘要翻译： 一种用于高分辨率VCR的信号特征变化装置，其中视频信号的特性根据磁带和频道的特性而变化。 测试信号的预定频带被记录在磁带上，用于在记录模式下记录磁带和通道特性。 这使得视频信号能够以适当的模式被记录在磁带上，并且在播放模式中允许通过检测记录在磁带上的测试信号来区分磁带和通道特性。 因此，视频信号可以根据鉴别的带和信道特性，根据其频率特性进行适当的调整，从带重放。

公开(公告)号：US5396377A

公开(公告)日：1995-03-07

申请号：US121480

申请日：1993-09-16

申请人： Tae S. Yang

发明人： Tae S. Yang

IPC分类号： H03M9/00 ,  G11B5/09

CPC分类号： H03M9/00

摘要： This invention relates to a device for correct converting of continuously reproduced serial data to original parallel data by detecting a synchronous signal, including a shift register for delaying serial data by a number of bits of a synchronous signal pattern in accordance with a serial clock, the serial data being reproduced from a magnetic recording medium, a detector for detecting a synchronous signal from an output signal of the shift register, a system controller for generating a predetermined bits interval of a parallel load signal and a parallel clock signal from the synchronous signal in accordance with the serial clock, a parallel shift register for converting the output signal of the shift register to a predetermined bits interval of parallel data in accordance with the parallel load signal, and counter part for counting the parallel clock signal to generate window signals detecting the synchronous signal in a certain period when the detector detects the synchronous signal.

摘要翻译： 本发明涉及一种用于通过检测同步信号来正确地将连续再现的串行数据转换为原始并行数据的装置，该同步信号包括用于根据串行时钟将同步信号模式的多个比特延迟串行数据的移位寄存器， 从磁记录介质再现的串行数据，用于从移位寄存器的输出信号检测同步信号的检测器，用于产生并行负载信号的预定位间隔和来自同步信号的并行时钟信号的系统控​​制器 根据串行时钟，并行移位寄存器，用于根据并行负载信号将移位寄存器的输出信号转换为预定的并行数据位间隔;以及计数器部分，用于对并行时钟信号进行计数，以产生检测 当检测器检测到同步信号时，在一定周期内同步信号。