Browse Prior Art Database

Communicating Paper Tape Typewriter

IP.com Disclosure Number: IPCOM000095129D
Original Publication Date: 1965-Sep-01
Included in the Prior Art Database: 2005-Mar-07
Document File: 2 page(s) / 41K

Publishing Venue

IBM

Related People

Cater, J: AUTHOR [+3]

Abstract

Communicating paper tape typewriter 10 has sending contacts 11 and 12 at both tape reading station 13 and tape punching station 14. Reading station 13 comprises a reader for sensing the information in punched tape. Station 13 his devices for selectively activating either printer 15 to provide printed copy or a punch at punching station 14 to produce punched tape or both. During this mode of operation contacts 11 at station 13 are operative to transmit data sensed by the reader to serializer-deserializer 16 and then to a communications line. Contacts 12 at station 14 are inoperative at this time.

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Communicating Paper Tape Typewriter

Communicating paper tape typewriter 10 has sending contacts 11 and 12 at both tape reading station 13 and tape punching station 14. Reading station 13 comprises a reader for sensing the information in punched tape. Station 13 his devices for selectively activating either printer 15 to provide printed copy or a punch at punching station 14 to produce punched tape or both. During this mode of operation contacts 11 at station 13 are operative to transmit data sensed by the reader to serializer-deserializer 16 and then to a communications line. Contacts 12 at station 14 are inoperative at this time.

Another mode of operation is the punching of paper tape at station 14 in response to keyboard actuation of printer 15. The information is transmitted to serializer-deserializer 16 and the communications line by contacts 12 at station 14 and contacts 1 1 at station 13 are inoperative.

When switching between the two modes of operation, a delay occurs between the initiation of the switching operation and the actual switching from one set of contacts to the other. This insures that all valid information is transmitted to the communications line.

For example, if paper tape is being read at station 13 and it is desired to punch paper tape at station 14 under control of the keyboard at printer 15, there is a slight delay before station 14 is rendered operative to punch tape and contacts 12 at station 14 can transmit information to serializer-d...