Cryptography – Key management – Having particular key generator
Patent
1989-04-11
1992-08-11
Kriess, Kevin A.
Cryptography
Key management
Having particular key generator
380 3, 364DIG1, 3642258, 3642256, 364225, 3642466, 3642821, 3642864, 3642865, 364286, G06F 1214, G06F 1540
Patent
active
051387115
DESCRIPTION:
BRIEF SUMMARY
TECHNICAL FIELD
This invention relates to a data processing system. More particularly this invention relates to a data processing system which is capable of easy and efficient retrieval of data.
This invention also relates to an editing apparatus aided by the data processing system. More particularly this invention relates to an editing apparatus possessing protective functions controlled by Security Number and enabling handling manuals such as for automobiles and electric appliances, books in general, magazines, and newspapers (hereinafter referred to collectively as "books") to be edited quickly and easily.
BACKGROUND OF THE INVENTION
In recent years, the practice of performing the work of editing a book by the use of a personal computer or a work station (editing device) has been disseminated. In this case, the work of editing a book is carried out by newly feeding complete data on documents, illustrations, etc. for each of the pages, with the whole information of an edited book memorized as separated in units of page. With the conventional editing apparatus, however, those documents, illustrations, etc. which appear in two or more places cannot be utilized in common but must be repeatedly fed in all over. The conventional editing apparatus, therefore, takes up much time and labor in the production of a book. The production of a book, accordingly, is very expensive.
SUMMARY OF INVENTION
The present invention, directed to the solution of the problem mentioned above, is characterized by attaching an element data key possessing a format common to various kinds of element data such as documents, illustrations, and photographs which jointly form one page of the book, to each of the various kinds of element data thereby enabling the data concerning the elements to be handled as common data, causing data of an edited book to be decomposed into data concerning layout and other data concerning elements for storage, and composing data for one page with the data concerning the layout and the other data concerning desired elements.
When an editing apparatus is so constructed as to operate on the principle just described, the data for one edited page are enabled to be again decomposed into data concerning the layout and other data concerning the elements and put to storage. By again composing data for one page with the data concerning the layout and those concerning desired elements, therefore, the element data common to the plural pages can be used in common without requiring these data to be introduced newly or repeatedly.
When the editing of a book is enabled to be easily carried out as described above, however, there arises the possibility that an operator not authorized performs the work of editing a book or revises the contents of an already edited book. Further, since the various kinds of data forming a book are not only retained in the edited book but also memorized as element data, there ensues the possibility that the element data not yet disclosed to the public will be laid open to the public inspection without leave or even will be altered.
This invention also aims to solve the problem of alteration mentioned above.
For the solution of the problem of the alteration mentioned above, the present invention is characterized by utilizing a security number memory means for memorizing the security numbers assigned only to the operators authorized to edit books and inspect them and, whenever any operator seeks access to the editing apparatus, checking the security number of the operator, and allowing him to perform the work of editing with the editing apparatus only when the security No. is found among the memorized security numbers or prohibiting him from doing so when the security number is not found among the memorized security numbers.
The security of a book and element data can be warranted by checking the security number of an operator seeking access to the editing apparatus against the memorized security numbers to determine whether this operator should be allowed to do so.
This invention further p
REFERENCES:
patent: 4057849 (1977-11-01), Ying et al.
patent: 4652698 (1987-03-01), Hale et al.
patent: 4951249 (1990-08-01), McClung et al.
patent: 4958291 (1990-09-01), Mamone et al.
Miyoshi Akito
Terai Hiromitsu
Honda Giken Kogyo Kabushiki Kaisha
Kriess Kevin A.
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