Efficient packed encoding method for ASN.1
US5638066A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Mar 6, 1995 |
| Grant date | Jun 10, 1997 |
| Priority date | — |
| Expiry date | Mar 6, 2015 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03M7/30
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
An efficient packed encoding rules (EPER) for ASN.1 for efficiently encoding the value to each type of abstract syntax definition, in which structure of an encoding data is divided into three fields of a bit field, an octet field following the bit field, and an offset field selectively added to before the bit field, in the bit field, bit data is set in the order of the abstract syntax definition, in the octet field, octet data in a unit of octet is set in the order of the abstract syntax definition, in the offset field, a length information of bit field is set and, in the bit field, padding is made so that a total length of the offset field and the bit field is an integer multiple of 8 bits, and the offset field is added when the length of bit field is not determined from the abstract syntax definition, thereby eliminating problems of PER.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.