Browse Prior Art Database

Automatic Video Stream Handler for Compression

IP.com Disclosure Number: IPCOM000111469D
Original Publication Date: 1994-Feb-01
Included in the Prior Art Database: 2005-Mar-26
Document File: 2 page(s) / 27K

Publishing Venue

IBM

Related People

Feig, E: AUTHOR

Abstract

Disclosed is a device for automatically feeding short contiguous video signals from a tape source, such as a VHS, to a computer storage device.

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This is the abbreviated version, containing approximately 100% of the total text.

Automatic Video Stream Handler for Compression

      Disclosed is a device for automatically feeding short
contiguous video signals from a tape source, such as a VHS, to a
computer storage device.

      The article proposes an automatic stop-rewind-play device, with
parameters tuned to the free space on the storage device (assumed to
be disk) and the speed of encoding (compressing).  Suppose the disk
has space for n seconds of video (and its associated audio).  The
device, which is linked to both the tape drive and the computer,
plays n seconds of the video to be stored, and then stops the video
player.  The computer proceeds to encode the n seconds of video,
while the device signals the video player to rewind a bit more than
the n seconds.  When the encoding (compression) is done, the computer
signals the device which, in turn, signals the video player to start
playing again.  A matching algorithm ensures that the next frame is
aligned appropriately.  The process repeats until all the desired
video is encoded.

      A variation of the method allows for an initial real-time
compression, say, k-to-1, and the recording of kn seconds of data
before the video source is stopped.