TDM collision detector
US4751701A · kind A · utility
40Cited by
22References
16Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 14, 1985 |
| Grant date | Jun 14, 1988 |
| Priority date | — |
| Expiry date | Nov 14, 2005 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L12/413
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A collision detection mechanism includes a transmission protocol which locates a gap in a station's transmission, of fixed duration and position, relative to start of transmission. Collision detection is enhanced since random timing of collisions normally results in filling in the gap. This condition is more readily detectable than detecting the simultaneous presence of energy from two transmitters. The transmission protocol is followed unless the transmitting station detects a collision, in which event gap creation is inhibited. The gap detecting equipment may be located at a network head end.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.