Browse Prior Art Database

Control Indicator Display Facility

IP.com Disclosure Number: IPCOM000094935D
Original Publication Date: 1965-Jul-01
Included in the Prior Art Database: 2005-Mar-06
Document File: 2 page(s) / 54K

Publishing Venue

IBM

Related People

Carlock, FR: AUTHOR [+4]

Abstract

In computer systems, control and test panels generally comprise neon type indicators and associated toggle switches for manual indicator control. In large system configurations, the number of indicators required and their related switches consume a substantial amount of space and a corresponding amount of circuits and associated hardware in the control panel.

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Control Indicator Display Facility

In computer systems, control and test panels generally comprise neon type indicators and associated toggle switches for manual indicator control. In large system configurations, the number of indicators required and their related switches consume a substantial amount of space and a corresponding amount of circuits and associated hardware in the control panel.

An alternative control indicator system consists of cathode ray tube 1 and associated light pen 3. The status of various circuits such as accumulators, counters, registers, etc., are indicated on the face of the CRT as shown. An indicator panel mask, provided by a silk screening process in the desired format, is bonded to the inner surface of the CRT screen. A wide or defocused beam is used to scan the CRT face. The statuses of triggers such as accumulator and register stages are indicated by the spot traced by the beams at the selected location under computer control and, in a preferred arrangement, are displayed as light characters against an opaque background.

Alternatively, portions of the display can be highlighted by color as lines 5 and 7 or displayed as opaque characters against a transparent background. Light pen 3 is utilized to communicate with the CRT display and to provide those control functions such as trigger reversal normally provided by toggle switches. A control panel associated with a graphic image processing system is used to illustrate the device. This...