Proceedings of the 1993 ACM Multimedia Conference, Anaheim CA, August 1993.
Abstract:
This paper describes a stand-alone network-based video capture and
processing peripheral (the Vidboard) for a distributed multimedia
system centered around a gigabit-per-second Asynchronous Transfer Mode
(ATM) network. The Vidboard captures video from an analog NTSC
television source and transmits it to devices within the system.
Devices control the Vidboard through a set of ATM protocols. Whereas
capture boards typically generate video streams having fixed frame
rate characteristics, the Vidboard is capable of decoupling video from
the real-time constraints of the television world. This allows easier
integration of video into the software environment of computer
systems. The Vidboard is based on a front-end frame-memory processor
architecture that is also capable of generating full-motion video
streams having a range of presentation (picture size, color space) and
network (traffic, pixel packing) characteristics. A series of
experiments are presented in which video is transmitted to a
workstation for display. Frame rate performance and a remote video
source control model are described.
