Accession Number : ADD009646

Title :   Interactive Communication Channel.

Descriptive Note : Patent Application,

Corporate Author : DEPARTMENT OF THE AIR FORCE WASHINGTON DC

Personal Author(s) : Chan,Robert H

Report Date : 11 Jun 1982

Pagination or Media Count : 60

Abstract : An interactive communications channel (ICC) for providing a digital computer with high-performance multi-channel interfaces. Sixteen full duplex channels can be serviced in the ICC with the sequence or scan pattern being programmable and dependent upon the number of channels and their speed. A channel buffer system is used for line interface, and character exchange. The channel buffer system is on a byte basis. The ICC performs frame start and frame end functions, bit stripping and bit stuffing. Data is stored in a memory in block format (256 bytes maximum) by a program control and the ICC maintains byte address information and a block byte count. Data exchange with a memory is made by cycle steals. Error detection is also provided for using a cyclic redundancy check technique. (Author)

Descriptors :   *Patent applications, *Multichannel communications, *Digital computers, Interfaces, Byte functional modules, Interactions, Error detection codes, Buffer storage, Data storage systems, Information exchange, Inventions

Subject Categories : Computer Hardware
      Non-radio Communications

Distribution Statement : APPROVED FOR PUBLIC RELEASE