Apparatus and method for entering setting commands in a computer-controlled interlocking system

US4864534A · kind A · utility

Assignee

• Alcatel N.V. · NL

Inventors

• Jurgen Kehrer · Ditzingen, DE
• Harald Schulz · Kammeltal, DE

Key dates

• Filing date: Oct 21, 1987
• Grant date: Sep 5, 1989
• Expiry date: Oct 21, 2007

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10S707/99934
• WIPO field: Transport
• WIPO sector: Mechanical engineering

Abstract

A method is disclosed for converting operator inputs into control commands in a computer-controlled interlocking system. For standard inputs, a search method is used instead of a complicated and time-consuming syntax analysis. Using a pseudorandom technique, a search code is determined from the text entered into an input device. With the aid of this search code, the control command assigned to the input text is found in a previously compiled list of all control commands. Before being processed, the control command found is checked for agreement with the input by a direct comparison.