Method of secure server control of local media via a trigger through a network for instant local access of encrypted data on local media

• US 5,892,825 A
• Filed: 11/25/1996
• Issued: 04/06/1999
• Est. Priority Date: 05/15/1996
• Status: Expired due to Term

• Current Assignee: Apple Inc.
• Original Assignee: Hyperlock Technologies, Inc.
• Inventors: Mages, Kenneth G., Feng, Jie
• Primary Examiner(s): CANGIALOSI, SALVATORE A
• Application Number:
  US08/756,162
• Time in Patent Office: 862 Days
• Field of Search: 380/3-5, 380/21
• US Class Current: 705/51
• CPC Class Codes: G06F 21/10 Protecting distributed programs or content, e.g. vending or licensing of copyrighted material protection in video systems or pay television H04N7/16 ; Digital rights management [DRM]
• CPC Class Codes: G11B 20/00086 Circuits for prevention of unauthorised reproduction or copying, e.g. piracy indicating unauthorised use of record carriers in general G11B23/28; scrambling for television signal recording H04N5/913; network architectures or network protocols for network security H04L63/00; cryptographic mechanisms or cryptographic arrangements for secret or secure communication H04L9/00
• CPC Class Codes: G11B 20/00137 involving measures which result in a restriction to contents recorded on or reproduced from a record carrier to authorised users
• CPC Class Codes: G11B 20/00152 involving a password
• CPC Class Codes: G11B 20/00159 Parental control systems
• CPC Class Codes: G11B 20/0021 involving encryption or decryption of contents recorded on or reproduced from a record carrier
• CPC Class Codes: G11B 20/00224 wherein the key is obtained from a remote server
• CPC Class Codes: G11B 20/00615 said format change concerning the logical format of the recording medium, e.g. the structure of sectors, blocks, or frames
• CPC Class Codes: G11B 20/0071 involving a purchase action
• CPC Class Codes: H04L 63/0428 wherein the data content is protected, e.g. by encrypting or encapsulating the payload
• CPC Class Codes: H04L 63/061 for key exchange, e.g. in peer-to-peer networks cryptographic mechanisms or cryptographic arrangements for key agreement H04L9/0838
• CPC Class Codes: H04L 63/083 using passwords cryptographic mechanisms or cryptographic arrangements for entity authentication using a predetermined code H04L9/3226

Abstract

A method of triggering video imaging and/or audio data on a "HyperCD" (CD-ROM) via a trigger through a network for instant local access of encrypted data on local media. The CD-ROM contains video/audio files that have been crippled by removing the critical information thereof. The CD-ROM also contains programs for directly and automatically connecting the end-user'"'"'s computer to a targeted server (URL) a network (such as the Internet).

The method of the invention includes the separation of critical information/key from media data, the storage of encrypted keys on a remote server, the storage of crippled chunky media data on CD-ROM'"'"'s, the socket-to-socket connection between the end-user'"'"'s computer and the remote server and the request from user to server, the authorization and transmission of the uncrippling key through a network to the end-user'"'"'s computers, the combining in RAM of the trigger and the crippled data from CD-ROM for instant rendering/playback, the storing of the uncrippling key on the end-user'"'"'s computers non-volatile media for owning the data on the CD-ROM for later access authorized by the remote server. Since the uncrippling trigger is much smaller than the entire media file, it saves considerable amount of transmission time, thereby instantly combining the trigger with the crippled data on the CD-ROM, after which instantly playing the designated track from end-user'"'"'s computer.

Claims

1. A method of transmitting data invoking a crippled file on a storage medium containing video and/or audio over a network, comprising:

(a) converting analog video and/or audio data into digital data;

(b) crippling the video and/or audio files on the storage medium by removing selected information therefrom, whereupon the files are rendered unusable without an uncrippling trigger;

(c) storing the digital data representing the video and/or audio on a storage medium for use by an end user'"'"'s computer means;

(d) storing uncrippling trigger data comprising the selected information at a host computer means for use in uncrippling the data files on the storage medium;

(e) transmitting the uncrippling trigger data from the host computer means through a network to the end-user'"'"'s computer means with which the storage medium having the crippled data files thereon is associated;

(f) receiving the uncrippling trigger data at the end-user'"'"'s computer means in the volatile RAM of the end-user'"'"'s computer means; and

(g) substantially instantly uncrippling the crippled data files on the storage medium by means of combining in RAM the uncrippling trigger data sent by the host computer means in said step (e) with the crippled data on the storage medium;

(h) before said step (e), encrypting the uncrippling trigger data into encoded data; and

(i) after said step (f), decrypting the encrypted data;

step (g) being carried out immediately after said step (f), and, immediately after said step (g), playing the video and/or audio on a player means;

said step (f) comprising;

1) directing the incoming uncrippling trigger data to RAM for temporary storage therein;

2) combining in RAM said uncrippling trigger data with said crippled video and/or audio files; and

3) preventing the copying thereof to nonvolatile memory;

said step (g) being performed while said uncrippling data is in said RAM for immediate playback of said video and/or audio files on said storage medium.

2. The method of transmitting data invoking a crippled file on a storage medium containing video and/or audio over the Internet, according to claim 1, wherein said step (f) comprises catching the uncrippling trigger data for the crippled data files, and directing the encoded trigger data to a specific cache directory of the end-user computer means.

3. The method of transmitting data invoking a crippled file on a storage medium containing video and/or audio over the Internet, according to claim 1, wherein said step (c) comprises removing the header data from the video/audio files;

said step (d) comprising storing the header data representing the header data removed from the video/audio files in said step (c).

4. The method of transmitting data invoking a crippled file on a storage medium containing video and/or audio over the Internet, according to claim 1, wherein said step (h) comprises converting binary data into seven-digit ASCII code.

5. The method of transmitting data invoking a crippled file on a storage medium containing video and/or audio over the Internet, according to claim 1, said step of playing comprising converting the digital binary data back into analogue.

6. The method of transmitting data invoking a crippled file on a storage medium containing video and/or audio over the Internet, according to claim 1, wherein said storage medium comprises memory means for representing the necessary information for automatically and directly connecting via the Internet the end-user'"'"'s computer, with which the storage medium is associated, to a host computer which stores the uncrippling trigger data for the video/audio files on the storage medium.

7. The method of transmitting data invoking a crippled file on a storage medium containing video and/or audio over the Internet, according to claim 1, further comprising:

(j) allowing, by server-permission only, the end-user the ability to store said trigger on non-volatile media for permanent ownership of said data.

8. A method of transmitting data invoking a crippled file from which selected information has been removed, on a storage medium containing video and/or audio data over the Internet, comprising:

(a) storing uncrippling trigger data comprising said selected information at a host computer for use in uncrippling video/audio files on a storage medium;

(b) encrypting and transmitting the uncrippling trigger data from the host computer through the Internet to the end-user'"'"'s computer with which the storage medium having the crippled files thereon is associated;

(c) receiving and decrypting the uncrippling trigger data at the end-user'"'"'s computer over the Internet;

(d) immediately after said step (c), uncrippling the crippled data files on the storage medium by means of the uncrippling trigger data sent by the host computer in said step (b);

(e) immediately after said step (d), playing the video and/or audio on a player;

said step (c) comprising directing the incoming uncrippling trigger data to volatile RAM for temporary storage therein, combining in RAM said trigger data with said crippled file, and preventing the copying thereof to nonvolatile memory;

said step (d) being performed while said uncrippling data is in said volatile RAM for immediate playback of said video and/or audio files by said step (e).

9. The method of transmitting data invoking a crippled file on a storage medium containing video and/or audio data over the Internet, according to claim 8, wherein said step (c) comprises catching the uncrippling trigger data for the crippled data files and retrieving the encrypted data to a specific cache-directory location of the end-user computer from the remote server into the end-user'"'"'s RAM for immediate playback by said step (e).

10. The method of transmitting data invoking a crippled file on a storage medium containing video and/or audio data over the Internet, according to claim 8, wherein before said step (a), removing the header data from the video/audio files;

said step (d) comprising restoring the header data representing the header data removed from the video/audio files.

11. The method of transmitting data invoking a crippled file on a storage medium containing video and/or audio data over the Internet, according to claim 8, wherein said step (b) comprises encrypting the uncrippling trigger data from binary format into encoded text format data.

12. The method of transmitting data invoking a crippled file on a storage medium containing video and/or audio data over the Internet, according to claim 8, wherein said steps (c) and (d) are carried out substantially simultaneously so that said step (e) plays back the video and/or audio data substantially immediately after said step (d).

13. The method of transmitting data invoking a crippled file on a storage medium containing video and/or audio over the Internet, according to claim 8, wherein said storage medium comprises memory means for representing the necessary information for automatically and directly connecting via the Internet the end-user'"'"'s computer, said method further comprising before said step (a), automatically and directly connecting the end user'"'"'s computer to the host computer which has stored thereat the uncrippling trigger data for the video/audio files on the storage medium by means of the memory means of the storage medium for representing the necessary information for automatically and directly connecting via the Internet.

14. The method of transmitting data invoking a crippled file on a storage medium containing video and/or audio over the Internet, according to claim 8, wherein said step (a) comprises storing at least one of the following:

Video/audio header data;

data for removing the hidden-status flag for the video/audio data files on the storage medium;

data for unzipping the zipped data files of the video/audio data files on storage medium;

data for changing the extension of the video/audio data files.

15. The method of transmitting data invoking a crippled file on a storage medium containing video and/or audio over the Internet, according to claim 8, wherein said storage medium comprises at least one of:

CD-ROM, floppy disk, and hard drive.

16. The method of transmitting data invoking a crippled file on a storage medium containing video and/or audio over the Internet, according to claim 9, further comprising permanently storing the incoming uncrippling trigger data in ROM of the end-user'"'"'s computer, for repeatedly uncrippling the crippled file when the playing thereof is required.

17. In a storage device, for use with a computer, which storage device comprises memory means for storing digital data thereon, the improvement comprising:

said memory means comprising crippled data files representative of video and/or audio;

said crippled data files being crippled by removal of selected data therefrom;

said crippled data files of said memory means being encrypted;

an end-user'"'"'s computer for use in playing back the crippled and encrypted data files on the storage device;

a host computer having a memory means for storing encrypted uncrippling data comprising said selected data thereon for said crippled, encrypted data files on said storage device;

a network system linking said end-user'"'"'s computer with said host computer, whereupon said host computer'"'"'s sending said uncrippling encrypted data stored in said memory means thereof to said end-user'"'"'s computer, said crippled data files on said storage device, associated with said end-user'"'"'s computer is uncrippled in the RAM of the end-users'"'"'s computer and rendered playable after being decrypted;

said end-user'"'"'s computer comprising means for decrypting said encrypted uncrippling triggering data and said encrypted crippled data files of said storage device;

volatile memory means for receiving said encrypted uncrippling triggering data;

means for immediately joining said decrypted uncrippling triggering data and said decrypted data files of said storage device in said RAM, for immediate playback of said data files;

said end-user'"'"'s computer further comprising player means for playing back the decrypted, uncrippled data files;

said means for immediately joining said decrypted uncrippling triggering data and said decrypted data files of said storage device, for immediate playback of said data files comprising means for preventing the copying of said uncrippling triggering data sent from said host computer to nonvolatile memory.

18. The storage device for use with a computer according to claim 17, wherein said removed selected data from said crippled data files comprises audio/video header information.

19. The storage device for use with a computer according to claim 17, said wherein said storage device comprises CD-ROM means.