Information retrieval system with expanded logic capability

Details Information retrieval system with expanded logic capability Information retrieval system with expanded logic capability

1976-08-03

1978-01-03

Canney, Vincent P.

Optics: image projectors

Selective data retrieval

Film strip

360 72, G03B 2312, G11B 1518

Patent

active

040668720

ABSTRACT:
The disclosure relates to a system and method for expanding the capacity of the logic control for an information bearing element retrieval system. The system disclosed includes means for determining if the absolute numerical difference between a predetermined digit of a current number identifying the current information bearing element being inspected, and a target number identifying the information bearing element to be inspected, is equal to or greater than a preselected integer. If the absolute numerical difference is equal to or greater than the preselected integer, the normal direction of scanning the information bearing elements is reversed. In so doing, a logic control and display having a finite n digit capacity may properly handle consecutively numbered information bearing elements having identification numbers of more than n digits.

REFERENCES:
patent: 3941978 (1976-03-01), Husron et al.

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