Message transmission by means of a variable length frame
US5642361A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Sep 2, 1994 |
| Grant date | Jun 24, 1997 |
| Priority date | — |
| Expiry date | Sep 2, 2014 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04J3/1647
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A transmitter transmits blocks to a receiver by means of frames formed of a locking row and data rows. It receives an acknowledgement from the receiver sent by the latter on recognizing a locking row. A block comprises control bits, data bits and adaptation bits. During a first phase preceding reception of the acknowledgement the transmitter transmits blocks in which the adaptation bits have been eliminated by means of short frames comprising an initial number of data rows. During a second phase following on from reception of the acknowledgement it transmits blocks incorporating the adaptation bits by means of complete frames comprising a final number of data rows which is greater than said initial number. The receiver includes an analyzer for determining if the blocks are conveyed by a short frame or by a complete frame in order to identify the nature of the blocks.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.