Browse Prior Art Database

Display Terminal

IP.com Disclosure Number: IPCOM000094833D
Original Publication Date: 1965-Jun-01
Included in the Prior Art Database: 2005-Mar-06
Document File: 2 page(s) / 40K

Publishing Venue

IBM

Related People

Donath, E: AUTHOR [+2]

Abstract

The display terminal uses a standard television cathode ray tube and scanning circuits as the display element. The display is primarily for use with alphanumeric data and has the advantages of a large screen format, rapid erasure, and no mechanical movements. The system comprises Standard Television Tube display 10, associated TV Scan circuitry 12, and central System Scan 18 or system clock which concurrently scans input information and synchronizes Scan 12.

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Display Terminal

The display terminal uses a standard television cathode ray tube and scanning circuits as the display element. The display is primarily for use with alphanumeric data and has the advantages of a large screen format, rapid erasure, and no mechanical movements. The system comprises Standard Television Tube display 10, associated TV Scan circuitry 12, and central System Scan 18 or system clock which concurrently scans input information and synchronizes Scan 12.

Data is brought in on an appropriate Input Line from a computer or some other display information source and entered into a small, local memory designated Input Character Identification Store 14. Local Character Description Store 16 actually contains the bit pattern necessary to display a particular character on tube 10 and is connected by a suitable interface or decoder to Store
14. Thus, when a particular storage location of Store 14 is interrogated and a character is called for, the bit pattern for this character is sent from Store 16 to Parallel-Series Converter 20.

This converts the parallel character information supplied from Store 16 for a given line, which is to be sent out in parallel to Converter 20, into a series signal for presentation to the grid of tube 10. Once Store 14 is loaded from the Input Line, the system continues to display the pattern called for until this information is erased and a new input signal is received.

Since the actual description of the character or the cha...