Protocol encoding/decoding device capable of easily inputting/re

Details Protocol encoding/decoding device capable of easily inputting/re Protocol encoding/decoding device capable of easily inputting/re

1993-04-23

1995-05-23

Heckler, Thomas M.

Boots, shoes, and leggings

364DIG1, 3642408, G06F 1342

Patent

active

054189632

ABSTRACT:
In a protocol encoding/decoding device for use in syntax translation between an abstract syntax which is a set of data types described by an Abstract Syntax Notation One (ASN.1) and a transfer syntax, a structure generating unit (28) automatically generating, on the basis of a predetermined conversion rule, structures corresponding to data structure represented by the abstract syntax stored in the abstract syntax storage (10). The structures are stored in a structure storage (14). An AST generating unit (32) automatically generates an ASN.1 syntax tree (AST) which represents the data structure of the abstract syntax. The AST is stored in an AST storage (18). On encoding, a user program (26) inputs data values in the structure storage (14). On encoding, a VTL generating function (16G) automatically generates a VTL on the basis of the data values stored in the structure storage (14). On encoding, a PDU encoding/encoding unit (20) encodes the abstract syntax into a protocol data unit (PDU) on the basis of the AST and of the VTL. On decoding, the PDU encoding/decoding unit (20) decodes the PDU on the basis of the AST to generate a VTL. On decoding, a VTL referring function (16R) refers the VTL to store the data values in the structure storage (14). On decoding, the user program (26) refers to the data values stored in the structure storage (14).

REFERENCES:
patent: 5210535 (1993-05-01), Fujita
patent: 5263137 (1993-11-01), Anezaki
patent: 5291583 (1994-03-01), Bapat
Patent Abstracts of Japan, vol. 15, No. 144, (35 P 1189), 11, Apr. 1991, (corresponding to JP 3-19056 (A).
G. Neufeld, et al., "An Overview of ASN.1", Computer Networks and ISDN Systems, vol. 23, No. 5, Feb. 1992, pp. 393-415.

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