Apparatus for, and method of, packing and unpacking information in transmission lines
US5384775A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Dec 8, 1993 |
| Grant date | Jan 24, 1995 |
| Priority date | — |
| Expiry date | Dec 8, 2013 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04J3/1682
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
Symbols, each having a particular number (e.g. 9) of binary bits in first channels have individual periodicities. A symbol in each channel indicates the start and the periodicity of the symbols in that channel. Another symbol indicates the end of the symbols in that channel. The symbols from each channel are merged into sequential time slots, in a priority dependent upon the symbol periodicities in the different channels. Aperiodic symbols in second channels are merged sequentially into the time slots not occupied by the periodic symbols. Second portions (e.g. 5 bits) of the symbols in groups are provided in character frames without change. The binary bits (e.g. 4) in the first portion of each symbol in each group represent a decimal integer. The resultant decimal value is represented in the character frame by a reduced number (e.g. 10) of binary bits. After transmission, the reduced number of binary bits are converted at a receiver to binary bits representing each decimal integer in the resultant decimal value. The converted bits for each symbol are combined with the bits in the second portion of the symbol to restore the symbol. The time slots for the periodic symbols of each ind…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.