The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Nov. 16, 1999
Filed:
Apr. 02, 1997
Tomoki Tsumura, Yokohama, JP;
Matsushita Electric Industrial Co., Ltd., Osaka, JP;
Abstract
The present invention aims to provide a system, which can prevent unauthorized copying of information in a society covered by a network and can exclude distribution and diffusion of information in the network or package media. In a system comprising a receiving unit connected to broadcasting and/or communication network, there are provided a transmitting unit, a writing unit to a package medium, a reading unit, a reproducing unit for displaying and reproducing the information, and a management unit including a filing unit, each of these units has an ID to define a space to which that unit belongs, and by comparing it with a space ID, which defines a space where the information can be utilized and is added to the information transferred within the system, the compatibility of the utilization, i.e. whether the information is being utilized in an authorized space or not, is checked and unauthorized utilization of information or unauthorized copying are prevented.