Method for efficient data transfers between domains of differing data formats
US6324178A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | May 26, 1998 |
| Grant date | Nov 27, 2001 |
| Priority date | — |
| Expiry date | May 26, 2018 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L69/22
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A method for efficient data transfers between domains of differing data formats. In one exemplary implementation, data transfer is performed with respect to an IEEE 1394 communication domain and an Ethernet communication domain. The novel data transfer method advantageously eliminates the need to copy the data payload section of a received data packet from one memory region to another memory region within a bridge device coupled between first and second communication domains. Specifically, the header, data payload and trailer sections of a received data packet (of a first communication domain format) are copied into a first portion of memory within the bridge device. The present invention then assembles a new data packet by constructing a new header of a second communication domain and appending a pointer to the new header that points to the data payload location within the first portion of memory. The header includes a destination address obtained from the data payload location and a source address of the bridge device. The new packet is of the second communication domain. The bridge device then transmits the new header section to the second communication domain and forwards the d…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.