Patents by Inventor Alan Edward Bell
Alan Edward Bell has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 7770030Abstract: A system and method for enabling broadcast programs to be copied once only by consumer recorders includes writing a unique media identification on each blank disk to which content is to copied in a read-only area of the disk before it is initially recorded. Also, a one-way key management media key block is written to the disk. A content key is derived by combining a media key, derived from the media key block, with the media identification. Additionally, to facilitate copying the content one time only, an exchange key is established between the recorder and a sender such as a satellite receiver or a disk player that is associated with the recorder, and the exchange key is modified with one or more special numbers representing control commands including copy once and copy no more. The modified exchange key is then encrypted using the content key to render an encrypted modified exchange key, and the encrypted modified exchange key is then hashed with a nonce to render a bus content key.Type: GrantFiled: March 20, 2008Date of Patent: August 3, 2010Assignees: International Business Machines Corporation, Intel CorporationInventors: Alan Edward Bell, Jeffrey Bruce Lotspiech, Chandler Brendan Stanton Traw
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Publication number: 20080181410Abstract: A system and method for enabling broadcast programs to be copied once only by consumer recorders includes writing a unique media identification on each blank disk to which content is to copied in a read-only area of the disk before it is initially recorded. Also, a one-way key management media key block is written to the disk. A content key is derived by combining a media key, derived from the media key block, with the media identification. Additionally, to facilitate copying the content one time only, an exchange key is established between the recorder and a sender such as a satellite receiver or a disk player that is associated with the recorder, and the exchange key is modified with one or more special numbers representing control commands including copy once and copy no more. The modified exchange key is then encrypted using the content key to render an encrypted modified exchange key, and the encrypted modified exchange key is then hashed with a nonce to render a bus content key.Type: ApplicationFiled: March 20, 2008Publication date: July 31, 2008Inventors: ALAN EDWARD BELL, Jeffrey Bruce Lotspiech, Chandler Brendan Stanton Traw
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Patent number: 7380137Abstract: A system and method for enabling broadcast programs to be copied once only by consumer recorders includes writing a unique media identification on each blank disk to which content is to copied in a read-only area of the disk before it is initially recorded. Also, a one-way key management media key block is written to the disk. A content key is derived by combining a media key, derived from the media key block, with the media identification. Additionally, to facilitate copying the content one time only, an exchange key is established between the recorder and a sender such as a satellite receiver or a disk player that is associated with the recorder, and the exchange key is modified with one or more special numbers representing control commands including copy once and copy no more. The modified exchange key is then encrypted using the content key to render an encrypted modified exchange key, and the encrypted modified exchange key is then hashed with a nonce to render a bus content key.Type: GrantFiled: February 2, 2004Date of Patent: May 27, 2008Assignees: International Business Machines Corporation, Intel CorporationInventors: Alan Edward Bell, Jeffrey Bruce Lotspiech, Chandler Brendan Stanton Traw
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Patent number: 7082413Abstract: A system and method for enabling authorized music from a CD or DVD to be compressed by a user for the user's own use, but to prevent the recompression of unauthorized music from, e.g., the Internet, includes hashing the music during recording with a cryptographic hash, and then signing the hash with a digital signature derived from the hash. Subsequent unauthorized compression and recompression will destroy the digital signature. Accordingly, music to be recorded is hashed to obtain a test digital signature and if, after hashing, the test digital signature matches the digital signature accompanying the music, compression and recording are allowed to proceed.Type: GrantFiled: November 24, 1999Date of Patent: July 25, 2006Assignee: International Business Machines CorporationInventors: Alan Edward Bell, Jeffrey Bruce Lotspiech
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Patent number: 6832319Abstract: A system and method for enabling broadcast programs to be copied once only by consumer recorders includes writing a unique media identification on each blank disk to which content is to copied in a read-only area of the disk before it is initially recorded. Also, a one-way key management media key block is written to the disk. A content key is derived by combining a media key, derived from the media key block, with the media identification. Additionally, to facilitate copying the content one time only, an exchange key is established between the recorder and a sender such as a satellite receiver or a disk player that is associated with the recorder, and the exchange key is modified with special numbers representing control commands including copy once and copy no more. The exchange key is then encrypted using the content key and then hashed with a nonce to render a bus content key. The bus content key is then used to encrypt the data for copying the data to a disk.Type: GrantFiled: July 20, 1999Date of Patent: December 14, 2004Assignees: International Business Machines Corporation, Intel CorporationInventors: Alan Edward Bell, Jeffrey Bruce Lotspiech, Chandler Brendan Stanton Traw
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Publication number: 20040156503Abstract: A system and method for enabling broadcast programs to be copied once only by consumer recorders includes writing a unique media identification on each blank disk to which content is to copied in a read-only area of the disk before it is initially recorded. Also, a one-way key management media key block is written to the disk. A content key is derived by combining a media key, derived from the media key block, with the media identification. Additionally, to facilitate copying the content one time only, an exchange key is established between the recorder and a sender such as a satellite receiver or a disk player that is associated with the recorder, and the exchange key is modified with one or more special numbers representing control commands including copy once and copy no more. The modified exchange key is then encrypted using the content key to render an encrypted modified exchange key, and the encrypted modified exchange key is then hashed with a nonce to render a bus content key.Type: ApplicationFiled: February 2, 2004Publication date: August 12, 2004Applicants: International Business Machines Corporation, Intel CorporationInventors: Alan Edward Bell, Jeffrey Bruce Lotspiech, Chandler Brendan Stanton Traw
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Publication number: 20020161714Abstract: A system and method for enabling authorized music from a CD or DVD to be compressed by a user for the user's own use, but to prevent the recompression of unauthorized music from, e.g., the Internet, includes hashing the music during recording with a cryptographic hash, and then signing the hash with a digital signature derived from the hash. Subsequent unauthorized compression and recompression will destroy the digital signature. Accordingly, music to be recorded is hashed to obtain a test digital signature and if, after hashing, the test digital signature matches the digital signature accompanying the music, compression and recording are allowed to proceed.Type: ApplicationFiled: November 24, 1999Publication date: October 31, 2002Inventors: ALAN EDWARD BELL, JEFFREY BRUCE LOTSPIECH
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Patent number: 4101907Abstract: An optical recording medium comprises a light reflecting material coated with a light absorbing material which is coated with a transparent barrier layer and overcoated with a relatively thick transparent protective layer. During recording, portions of the light absorbing layer are ablated by a modulated focussed light beam, thereby exposing portions of the reflecting layer while leaving the barrier and overcoat layers intact. Information is recorded in the form of a reflective-antireflective pattern. The overcoat layer suspends dust particles far above the focal plane of the recording lens, thereby reducing their effect on the recording or playback signal. The barrier layer insulates the light absorbing layer and the overcoat layer from chemical and thermal interactions which might result in a decreased signal-to-noise ratio.Type: GrantFiled: August 29, 1977Date of Patent: July 18, 1978Assignee: RCA CorporationInventors: Alan Edward Bell, Robert Alfred Bartolini, Allen Bloom
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Patent number: 4023185Abstract: An ablative recording medium comprises a substrate coated with a light reflecting coating which in turn is coated with a light absorptive layer of 4-phenylazo-1-naphthylamine formed by evaporation of Sudan Black B dyestuff. During recording, portions of the organic coating are ablated, or vaporized, by a modulated focussed light beam, thereby exposing portions of the reflective layer and recording video information as a reflective-antireflective pattern.Type: GrantFiled: March 19, 1976Date of Patent: May 10, 1977Assignee: RCA CorporationInventors: Allen Bloom, Robert Alfred Bartolini, Alan Edward Bell