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Browse Prior Art Database

Phantom Switch Mode for Printer or Other Apparatus

IP.com Disclosure Number: IPCOM000050247D
Original Publication Date: 1982-Sep-01
Included in the Prior Art Database: 2005-Feb-10
Document File: 2 page(s) / 57K

Publishing Venue

IBM

Related People

Zimmerman, LT: AUTHOR

Abstract

A printer or other apparatus having a controller, such as a microprocessor, for example frequently requires the capability of selecting more functions than its control switches are normally able to do. That is, there are only a limited number of positions on the switches. Here, a 16-position switch on a printer can be used to execute more than 16 functions.

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Phantom Switch Mode for Printer or Other Apparatus

A printer or other apparatus having a controller, such as a microprocessor, for example frequently requires the capability of selecting more functions than its control switches are normally able to do. That is, there are only a limited number of positions on the switches. Here, a 16-position switch on a printer can be used to execute more than 16 functions.

Fig. 1 illustrates an Operator Panel for the printer. It has various indicator lamps and a light emitting diode (LED) display as well as a number of control buttons including a Start button. The "density" portion identifies the digits to be displayed in the LED display (e.g., 10A6), the number of characters per inch (e.g., 10 CPI), and the number of lines per inch (e.g., 6 LPI).

Fig. 2 shows a Mode switch and the terminology that is placed beside it. There are two positions which are on line; the rest of the positions are off line. The first one or straight up is normal printing on line. The first position to the right is labeled "EBCDIC" and is used for diagnosing what is being sent to the printer from the host in a user diagnostic or a text buffer print mode with no interpretations. The rest of the positions are mainly used for testing the machine.

The Mode switch is used for a phantom operation. This means that the switch is used to represent 31 positions instead of the existing 16 positions. This is accomplished in the following manner.

Placing the Mode sw...