Self-checking error checker for two-rail coded data
Abstract
Abstract A SERIES OF SELF-CHECKING ERROR CHECKING CIRCUITS ARE DISCLOSED FOR CHECKING TWO-RAIL LOGIC CODED DATA LINES. THE DATA LINES ARE ARRANGED AS N PAIRS OF TWO-RAIL GROUPS. ONE FORM OF THE CHECKER COMPRISES N-1 BASIC TWO OUTPUT BLOCKS CONNECTED IN A GENERAL TREE CONFIGURATION ACROSS THE TWO-RAIL DATA LINES. EACH OF SAID BASIC BLOCKS HAS TWO NORMALLY COMPLEMENTARY OUTPUT LINES AND THE LAST STAGE OF THE CHECKER IS A SINGLA BASIC BLOCK. IF AN INVAID CODE IS RECEIVED, THE TWO OUTPUTS WILL BE IDENTICAL. MALFUNCTIONS OR FAILURES IN THE CHECKING CIRCUIT ARE CHECKED BY CERTAIN LEGITIMATE CODE SIGNALS WHICH SIMILARLY CAUSE AN ERROR REPRESENTATION IN THE OUTPUT OF THE CHECKER WHEREBY BOTH OUTPUTS WILL BE IDENTICAL.
Inventors
- 👤 William C Carter
- 👤 Keith A Duke
- 👤 Peter R Schneider
Bibliographic Details
Claims Analysis
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| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
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| 3.5 Years (Year 4) | 1974-01-25 | 1974-07-27 | 1975-01-26 | $2000.00 | Window Closed / Lapsed |
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