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Browse Prior Art Database

Intercommunication System

IP.com Disclosure Number: IPCOM000090896D
Original Publication Date: 1969-Aug-01
Included in the Prior Art Database: 2005-Mar-05
Document File: 2 page(s) / 47K

Publishing Venue

IBM

Related People

Bagley, DS: AUTHOR [+4]

Abstract

Work stations in a computer machine room can intercommunicate using free space in an existing display. Each work station is a small unit on a long cable placable on top of a tape drive, on a printer, on a table, etc. There are two types of work stations. A digital display unit is for output and a key unit is for input. Each eight functional positions. The existing display contains a buffer storage having a normal display area. Among other available, but unused, areas in the buffer storage is an extra station area. Information can be stored in the extra station area by eight position extra stations 1...n and the stations can display information so stored. Cable connections are made through an existing interface.

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Intercommunication System

Work stations in a computer machine room can intercommunicate using free space in an existing display. Each work station is a small unit on a long cable placable on top of a tape drive, on a printer, on a table, etc. There are two types of work stations. A digital display unit is for output and a key unit is for input. Each eight functional positions. The existing display contains a buffer storage having a normal display area. Among other available, but unused, areas in the buffer storage is an extra station area. Information can be stored in the extra station area by eight position extra stations 1...n and the stations can display information so stored. Cable connections are made through an existing interface. During normal display operation, the buffer storage normal display area is accessed by the address register in accordance with information on the data path. When the buffer storage normal display area is not being accessed, additional information in the extra station area can be accessed through control logic. The control logic selects stations in accordance with select information supplied on the data path. A station is selected via the station select bus. Positions in the selected station are sequentially selected via the position select bus from the counter logic which is stepped once for each piece of data leaving the extra station area.

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