Automatic format conversion system and publishing methodology for multi-user network

• US 5,911,776 A
• Filed: 12/18/1996
• Issued: 06/15/1999
• Est. Priority Date: 12/18/1996
• Status: Expired due to Term

• Current Assignee: Unisys Corporation
• Original Assignee: Unisys Corporation
• Inventors: Guck, Randal Lee
• Primary Examiner(s): Dinh, Dung C.
• Application Number:
  US08/768,387
• Time in Patent Office: 909 Days
• Field of Search: 707/2, 707/104, 707/10, 707/522, 707/523, 707/200, 707/205, 395/200.01, 395/500, 395/200.47, 395/200.49
• US Class Current: 709/217
• CPC Class Codes: G06F 16/258 Data format conversion from or to a database
• CPC Class Codes: G06T 1/00 General purpose image data processing
• CPC Class Codes: G06T 2200/16 involving adaptation to the client's capabilities
• CPC Class Codes: H04L 51/066 Format adaptation, e.g. format conversion or compression
• CPC Class Codes: H04L 67/01 Protocols
• CPC Class Codes: H04L 69/18 Multiprotocol handlers, e.g. single devices capable of handling multiple protocols
• CPC Class Codes: H04L 9/40 Network security protocols
• CPC Class Codes: Y10S 707/99945 Object-oriented database structure processing
• CPC Class Codes: Y10S 707/99948 Application of database or data structure, e.g. distributed, multimedia, or image
• CPC Class Codes: Y10S 707/99953 Recoverability

Abstract

A network providing a server using an object-database enables an author to create and store an original document, as a source file with a first format. Software in the data base will provide multiple sets of shadow file-converter groups connected to the source file of the original document. Each shadow file-converter set enables the transformation of the original source file format into a particular other specific type of format. Any client or user of the network can access and receive a copy of the original source document which is automatically reformatted to match the requirements of the receiver'"'"'s appliance. Thus, one original source document can be created and then published in any specific format to multiple numbers of and type of receiving appliances.

Claims

1. In a network having multiple sending-receiving appliances each having different format requirements and operating protocols, wherein said network is supported by a Server using an object database, a method for enabling any one of said appliances to communicate with any other of said appliances comprising the steps of:

(a) establishing a source file in a first format as an object in said database;

(b) establishing, as a database object, a shadow file dedicated to each format used by the appliances connected to the network;

(c) establishing, as a database object, a converter for each shadow file, said converter functioning to transform said source file into the particular format of its dedicated shadow file;

(d) creating said database objects of source file, shadow file and converter as a virtual file system using MIME (Multi-Dumose Internet Mail Extension) types and subtypes;

(e) enabling any User to set up a source file in said database;

(f) enabling any appliance in the network to access a copy of said source file in a format suitable for the receiving appliance.

2. The method of claim 1 which includes the steps of:

(f) authoring, by a User-Sender, of a source file in said first format as an object in said database;

(g) establishing a hierarchical organization of resource objects which include;

(i) a virtual file converter object utilizing a MIME format which provides multiple sub-objects;

(ii) a virtual message object Providing virtual message sub-objects;

(iii) a message board object providing virtual message sub-objects;

(iv) a class of shadow file-converter objects which provide file converter objects, message converter objects each having sub-objects which translate files between each of them;

(h) running a sequence of operations whereby a plurality of said established shadow files and converters provide a compatible format for each appliance in the network to receive a copy of said authored source file;

(i) delivering a copy of said source file in a compatible format to each one of said receiving appliances.

3. In a network having multiple sending-receiving appliances and supporting multiple User-clients where each User-client utilizes a computer terminal serviced by a client-server module with an object database, a method for enabling a User-client to create a single document in a first format and to publish said document in different formats compatible to other computer terminals and receiving appliances, comprising the steps of:

(a) creating an original source document in a first format within the User-client'"'"'s computer terminal;

(b) transmitting the content of said original source document for storage as an object in said object database;

(c) populating said database with discreet objects as virtual files designated as a source file, a shadow file and a converter for each type of output format required for each terminal or appliance connected to said network or said server;

(d) utilizing a dynamic format conversion search and transformation means for locating the appropriate converter objects in said database and to utilize their format transformation functions to provide compatible formats for transmission to each one of said receiving appliances and client-Users, together with a protocol compatible to the said appliances and users.

4. A system for supporting multiple User-clients, each utilizing a computer terminal, and for enabling network appliances, oriented to different operating formats, to communicate with one another automatically without user intervention, said system comprising:

(a) a plurality of inter-connected appliances in a network including;

(a1) a plurality of User-client computer terminals connected to a content server means wherein each said computer terminal can originate a source document to a content server means or receive the content of a document from said server means;

(a2) a plurality of communication terminals including telephones and FAX machines connected to said content server means;

(b) said content server means for holding the content of document files in an object database which is an organized hierarchy of database objects which define the document content via a virtual file object, said virtual file object utilizing the MIME format to communicate with multiple subsets of file objects, and including;

(i) means to receive and hold the contents of an original source document in a first format received from said computer terminals and communication terminals;

(ii) means to set up a shadow file-converter set for each operating format required by each of the said computer and communication terminals;

(iii) means to receive call-requests, from said User-client'"'"'s computer terminals, for the content of selected document files;

(iv) means to transmit an output format, converted from said first format, which supplies the needed operational format for the receiving appliance which initiated the call request.

5. The system of claim 4 wherein said User-client computer terminal includes:

(a) means for said User-client to author an original document for placement as an object in said object database;

(b) means to distribute and publish the contents of said original document to all of the appliances in said network.

6. The system of claim 4 which includes:

(i) means to notify a shadow file that the contents of an original source document has been changed;

(ii) means in said notified shadow file to remove its access to contents at the original source document and replace this with access to the contents of the changed document.