Random number sequence sharing system, random number sequence sharing apparatus, codec system, coding apparatus, decoding apparatus, random number sequence sharing method, coding method, decoding method, and program product
US7471714B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Mar 15, 2005 |
| Grant date | Dec 30, 2008 |
| Priority date | — |
| Expiry date | Aug 25, 2026 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L2209/34
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
In a random number sequence sharing apparatus, a reception unit receives a radio signal including a radio wave from a pre-designated radio star at a pre-designated observation time, a sending unit sends the received radio signal to another random number sequence sharing apparatus, an acceptance unit accepts a radio signal sent from the another sharing apparatus, an analysis unit separates the two radio signals into a plurality of independent components by independent component analysis, a selection unit selects two independent components temporally different by difference in time required for the radio wave to arrive at both sharing apparatuses from the radio star, a sampling unit averages the two selected independent components after adjusting the temporal difference and bit-samples the average, and an output unit outputs a sequence of the bit samples as a random number sequence to be shared.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.