.[.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..]. .Iadd.Apparatus and method for controlling
recording and/or reproduction of digital signals to and/or from a digital
storage medium, are discussed. According to an embodiment, there is
provided a method for processing a digital signal stored on a digital
storage medium, comprising receiving digital data processed based on
first timing information and second timing information, the digital data
being stuffed by stuffing data capable of being detected and removed, and
being processed to prevent at least one of buffer underflow and buffer
overflow, wherein the first timing information is multiplexing timing
information for a multiplexer, and the second timing information is sync
information for video reproduction, and wherein the digital data includes
video data; determining whether a speed-varied reproduction mode is
selected for reproduction of the video data in a varied speed, the video
data compressed as at least one of I-frame and P-frame; and reproducing
the video data in a varied speed based on speed information when the
speed-varied reproduction mode is selected, the speed-varied reproduction
mode being associated with the speed information..Iaddend.