Browse Prior Art Database

Event Qualifying and Detecting Unit

IP.com Disclosure Number: IPCOM000078025D
Original Publication Date: 1972-Oct-01
Included in the Prior Art Database: 2005-Feb-25
Document File: 2 page(s) / 47K

Publishing Venue

IBM

Related People

Lawlor, FD: AUTHOR [+2]

Abstract

This is a device to detect the occurrence of certain events qualified by selected conditions, through the setting of condition and segment selection switches. Fig. 1 shows the interconnection of subunits making up the device, Segment selection unit 10, condition selection unit 11, and decoder 12.

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Event Qualifying and Detecting Unit

This is a device to detect the occurrence of certain events qualified by selected conditions, through the setting of condition and segment selection switches. Fig. 1 shows the interconnection of subunits making up the device, Segment selection unit 10, condition selection unit 11, and decoder 12.

The segment selection unit enables the user to select a subset of possible code values, where the total number of code inputs and condition qualifying inputs exceed the capacity of decoder inputs. Only one segment may be monitored at a time and segment size is 2/n/, where n is the number of decoder input lines.

Fig. 2 shows segment selection logic and illustrates the trade-off necessitated by the use of condition qualifiers, i.e., by using fewer condition qualifiers, the number of lines available for monitoring events (code lines) is increased. Fig. 2 shows that some code input lines are always fed into segment selection logic (through the permanent switches 20), while other code input lines are conditionally rechanneled into segment selection logic (through the switches 21) when displaced from decoder input by user selection of a qualifying condition.

The condition selection subunit is shown in Fig. 3 and allows the user to select those conditions with which to qualify the coded input. Note that when a condition signal is operative, it is fed into the decoder and the displaced code input is then fed into segment selection logic, as sh...