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A data processing apparatus for executing reproduction of a contentsdata from a memory device or recording of a contents data into said memorydevice comprising:an enabling key block distribution key enciphering key enciphered by an enabling key blocks containing enciphered data of renewal keys on such paths for constituting a key tree structure comprising a variety of keys disposed in correspondence with roots, nodes, and leaves on such paths ranging from roots to leaves of said key tree structure comprising a plurality of devices, wherein said enabling key block also contains data of upper-rank key enciphered via lower-rank key; whereinsaid data processing apparatus further comprises key distribution approval data files containing header data consisting of link count key for designating the number of contents data that should be enciphered by said enciphering keys acquirable based on said enabling key block distribution key enciphering key stored in said enabling key blocks, thereby said key distribution approval data files are stored in said memory device.
Notices, Deadlines & Correspondence
Patent Information
Applicants
SONY CORPORATION
Inventors
1. TAKUMI OKAUE
Specification
Documents
Application Documents
| # | Name | Date |
|---|---|---|
| 1 | 665-mum-2001-power of authority(15-10-2001).pdf | 2001-10-15 |
| 2 | 665-mum-2001-power of authority(23-11-2005).pdf | 2005-11-23 |
| 3 | 665-mum-2001-petition under rule 137(23-11-2005).pdf | 2005-11-23 |
| 4 | 665-mum-2001-form 3(23-11-2005).pdf | 2005-11-23 |
| 6 | 665-mum-2001-form 1(23-11-2005).pdf | 2005-11-23 |
| 7 | 665-mum-2001-correspondence(23-11-2005).pdf | 2005-11-23 |
| 8 | 665-mum-2001-claims(granted)-(23-11-2005).pdf | 2005-11-23 |
| 10 | 665-mum-2001-cancelled pages(23-11-2005).pdf | 2005-11-23 |
| 11 | 665-mum-2001-petition under rule 138(23-11-2006).pdf | 2006-11-23 |
| 12 | 665-MUM-2001-CORRESPONDENCE(RENEWAL PAYMENT LETTER)-(28-06-2013).pdf | 2013-06-28 |
| 13 | Form 27 [30-03-2017(online)].pdf | 2017-03-30 |
| 14 | 665-MUM-2001-FORM 4 [12-10-2017(online)].pdf | 2017-10-12 |
| 15 | 665-MUM-2001-RELEVANT DOCUMENTS [28-03-2018(online)].pdf | 2018-03-28 |
| 16 | abstract 1.jpg | 2018-08-08 |
| 17 | 665-mum-2001-form 5(13-7-2001).pdf | 2018-08-08 |
| 18 | 665-mum-2001-form 3(4-12-2001).pdf | 2018-08-08 |
| 19 | 665-mum-2001-form 3(13-7-2001).pdf | 2018-08-08 |
| 20 | 665-mum-2001-form 18(26-8-2005).pdf | 2018-08-08 |
| 21 | 665-mum-2001-form 1(13-7-2001).pdf | 2018-08-08 |
| 22 | 665-mum-2001-drawings(13-7-2001).pdf | 2018-08-08 |
| 23 | 665-mum-2001-correspondence(ipo)-(8-5-2006).pdf | 2018-08-08 |
| 24 | 665-MUM-2001-RELEVANT DOCUMENTS [07-03-2019(online)].pdf | 2019-03-07 |
| 25 | 665-MUM-2001-FORM-26 [24-02-2021(online)].pdf | 2021-02-24 |
| 26 | 200349-FORM 27-2013.pdf | 2024-03-01 |
| 27 | 200349- Form 27- 2009.pdf | 2024-05-07 |