Browse Prior Art Database

Digital Video Direction And Speed Controls

IP.com Disclosure Number: IPCOM000122125D
Original Publication Date: 1991-Nov-01
Included in the Prior Art Database: 2005-Apr-04
Document File: 3 page(s) / 127K

Publishing Venue

IBM

Related People

Najjar, LJ: AUTHOR

Abstract

Once video is digitized, the power of the computer opens up a huge variety of ways to manipulate the digital video. To keep the user from being overwhelmed by this flexibility, the application should include powerful digital video controls that are small, simple and apparent. These controls are especially useful in multimedia software applications.

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This is the abbreviated version, containing approximately 49% of the total text.

Digital Video Direction And Speed Controls

      Once video is digitized, the power of the computer opens
up a huge variety of ways to manipulate the digital video.  To keep
the user from being overwhelmed by this flexibility, the application
should include powerful digital video controls that are small, simple
and apparent.  These controls are especially useful in multimedia
software applications.

      This article describes small, simple, and powerful controls
that can be used to manipulate digital video direction and speed.
These digital video controls are designed to be intuitively obvious
to the user -- the function of each control is immediately apparent
to the user.  Additionally, since not all digital audio users speak
English, this article includes language-free labels for the controls.

      Since the video is digitized for presentation on a computer
screen, the controls described in this article are designed to appear
on the computer screen, too.  These controls function like
pushbuttons. The user "presses" the pushbutton by selecting it.  If
the user has a touch-sensitive computer screen, then the user touches
the video control button.  Otherwise, the user can position the
computer cursor on the button and press the keyboard or mouse Enter
keys.

      The English label version of the digital video direction
control labels appears in Fig. 1.  The control labels are based on
the familiar tape player controls, but use simple, non-technical,
short words.  Each of these controls is described below:
         Go -- Plays the digital video at normal speed.
         Stop -- Stops the digital video.
         Backup -- Reverses the digital video.
         Beginning -- Moves the digital video to the first
         "frame"
        (the first picture in the video).
         End -- Moves the digital video to the last "frame"
        (the last picture in the video).
         Remove -- Clears from the computer screen the window
         that contains the digital video.
         Help -- Gives the user explanatory information about
         the digital video and its controls.

      For simplicity, the digital video controls are placed in
related groups. The controls that manipulate the direction and
movement of the video -- "Go," "Stop," and "Backup" -- are grouped
together.  The controls that position the video at its extremes --
"Beginning" and "End" -- are grouped together.  Finally, the controls
that clear the video window -- "Remove" -- or give the user
information on how to use the controls -- "Help" -- are grouped
together.

      The language-free version of the digital video direction
control labels appears in Fig. 2.  The control labels perform the
same functions described above.  A description of the language-free
labels follows:
      Go -- A simple right arrow indicating the direction
      th...