KEYWORDS: Data communications, Control systems, Data storage, Telecommunications, Very large scale integration, Vestigial sideband modulation, Broadband telecommunications, Network architectures, Process control, Magnetism
A high-speed hardware architecture for an experimental
high-definition videotex system for a broadband integrated services digital network is introduced. The key technologies required are high-speed protocol processing, high-speed data transfer, and highspeed
picture readout from disks. High-speed protocol processing using a newly developed virtual memory copy, content rearrangement memory, two-bus architecture, and simultaneous editing and analyzing allows a requested 6-MB picture to be displayed within 3s.
KEYWORDS: Visual communications, Data communications, Telecommunications, Image processing, Data storage, Vestigial sideband modulation, Signal processing, Control systems, Process control, Magnetism
An experimental high-definition videotex system for broadband ISDN has been developed, and this paper introduces high-speed hardware architecture for this system. Key technologies required are highspeed protocol processing, high-speed data transfer, and high-speed picture readout. High-speed protocol processing — using a newly developed virtual memory copy, contents rearrangement memory, two-bus architecture, and simultaneous editing and analyzing — allows a requested 6-MB picture to be displayed within 3 seconds.
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