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Patent US6535871B1 successfully refreshed from Google Patents.
US6535871B1
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US
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Method for searching a digital rights management package
Assignee: Pitney Bowes Inc
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Filing: 2000-07-24
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Granted: 2003-03-18
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Expires: 2020-07-24
Abstract
Abstract A method that allows a search engine to find a document and allows a potential buyer to review portions of the document. The invention provides a plain text index to the document that may be searched by internet engines and reviewed by potential buyers of the document. The full text of the document remains encrypted and managed by a Digital Rights Management (DRM) package. The index is synchronized and hides contextual information so that potential buyers may determine whether they want to obtain rights to review the document.
Inventors
- 👤 Brian M. Romansky
- 👤 Thomas J. Foth
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 12:21
CPC Classifications
G; G06; G06F; G06F16/00; G06F16/90; G06F16/95; G06F16/951; G06F16/953; Y; Y10; Y10S; Y10S707/00; Y10S707/99931; Y10S707/99932
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
91 words
A method for preparing a document for review, the method comprising the steps of: creating an index of the document; removing contextual information from the index so that the index does not reveal the context of the document that may be searched; removing sensitive words from the index; removing key words from the index; randomizing the order of words in the index; and randomizing the frequency information in the index so that the significance of a particular key word may not be determined; and encrypting the full text of the document.
Claim 2
Independent Claim
91 words
A method for preparing a document for review, the method comprising the steps of: creating an index of the document; removing contextual information from the index so that the index does not reveal the context of the document that may be searched; removing sensitive words from the index; removing key words from the index; randomizing the order of words in the index; and randomizing the frequency information in the index so that the significance of a particular key word may not be determined; and encrypting the full text of the document.
Claim 3
Dependent Claim
37 words
The method claimed in claim 1 , further including the step of: allowing potential buyers to review the index so that the buyers may determine whether or not they want to obtain rights to review the document.
Claim 4
Dependent Claim
18 words
The method claimed in claim 1 , wherein search engines are used for electronic searching of the index.
Claim 5
Dependent Claim
24 words
The method claimed in claim 1 , wherein the full text of the document remains encrypted and managed by a Digital Rights Management package.
Claim 6
Dependent Claim
31 words
The method claimed in claim 1 , further including the step of: maintaining synchronization of the document in the index by having the document and the index in the same file.
Claim 7
Dependent Claim
25 words
The method claimed in claim 1 , wherein sensitive regions of the document containing sensitive words are marked prior to the production of the index.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2006-03-17 | 2006-09-16 | 2007-03-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2010-03-17 | 2010-09-16 | 2011-03-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2014-03-17 | 2014-09-16 | 2015-03-18 | $7700.00 | Window Closed / Lapsed |