Motion video signal processing for recording or reproducing – Local trick play processing – With randomly accessible medium
Reexamination Certificate
1997-09-09
2001-01-09
Garber, Wendy (Department: 2715)
Motion video signal processing for recording or reproducing
Local trick play processing
With randomly accessible medium
C386S349000, C386S349000, C369S047360
Reexamination Certificate
active
06173114
ABSTRACT:
BACKGROUND OF THE INVENTION
This invention relates to a device and method for reproducing data from recording media, and particularly relates to such a device and method which prevents data from overflowing or underflowing a decoder.
Recently, DVD (Digital Versatile Disc)-Video (referred to as simply DVD hereinafter) has been standardized, and it is expected to become extremely popular. Video data compressed by way of the MPEG (Moving Picture Expert Group) technique is recorded on a DVD. A DVD player reproduces data from the disc, decodes that data in the decoder section, and outputs it to a television for display.
If the television has decoding capabilities, the DVD player may be connected thereto via an audio-video (AV) bus, and the DVD player outputs an encoded bit stream via the AV bus to the television for decoding.
However, when data are transmitted through the AV bus from the DVD player to a television having decoding capabilities, the television decoder can overflow or underflow depending on the condition of the AV bus because there will be no overflow/underflow condition fed back from the television to the DVD player.
OBJECTS OF THE INVENTION
Therefore, it is an object of the present invention to provide an apparatus which overcomes the shortcomings of the above-discussed apparatus.
Another object of the present invention is to prevent a decoding device, such as a television having decoding capabilities, from overflowing and underflowing.
Various other objects, advantages and features of the present invention will become readily apparent from the ensuing detailed description and the novel features will be particularly pointed out in the appended claims.
SUMMARY OF THE INVENTION
In accordance with this invention, a reproducing device reproduces encoded data from a recording medium and a storage device temporarily holds the reproduced data. An extractor extracts the time information contained in the data, which is compared with a reference time. A controller controls the storage device and reproducing device in accordance with the result of comparison, and the data held by the storage device is applied to a transmission line.
In accordance with an aspect of this invention, the apparatus includes a reset device for resetting the reference time to correctly reproduce discontinuous data.
REFERENCES:
patent: 5243587 (1993-09-01), Itoh et al.
patent: 5758007 (1998-05-01), Kitamura et al.
patent: 5901149 (1999-05-01), Itakura et al.
patent: 5930450 (1999-07-01), Fujita
patent: 5930451 (1999-07-01), Ejiri
patent: 5949955 (1999-09-01), Nakai
patent: 5953483 (1999-09-01), Van Gestel et al.
patent: 5963704 (1999-10-01), Mimura et al.
patent: 5987214 (1999-11-01), Iwamura
patent: 6009234 (1999-12-01), Taira et al.
Horiguchi Mari
Yanagihara Naofumi
Boccio Vincent F.
Frommer William S.
Frommer & Lawrence & Haug LLP
Garber Wendy
Kessler Gordon
LandOfFree
Reproduction apparatus and method which prevents data... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Reproduction apparatus and method which prevents data..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Reproduction apparatus and method which prevents data... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2506266