Clifford R Brannon

US Patent:

55131697, Apr 30, 1996

Filed:

Nov 29, 1994

Appl. No.:

8/346423

Inventors:

Barry A. Fite - Terre Haute IN
Michael L. Mitchell - Terre Haute IN
Russ A. Kunz - Terre Haute IN
Clifford R. Brannon - Terre Haute IN

Assignee:

Sony Corporation - Tokyo
Digital Audio Disc Corporation - Terre Haute IN

International Classification:

G11B 700

US Classification:

369272

Abstract:

A machine-readable serial number is formed on a CD-ROM by using a laser to selectively remove a reflective layer from the CD-ROM, Removal of the reflective layer creates defects in addressable information storage locations on the CD-ROM, The serial number is read by detecting the defects, The serial number is used in a software distribution system in which many different software programs are distributed on a single CD-ROM and an access code based on the desired software program and the serial number of a particular CD-ROM is used to "unlock" the desired program on the particular CD-ROM,.

US Patent:

59302151, Jul 27, 1999

Filed:

Feb 10, 1998

Appl. No.:

9/021673

Inventors:

Barry A. Fite - Terre Haute IN
Michael L. Mitchell - Terre Haute IN
Russ A. Kunz - Terre Haute IN
Clifford R. Brannon - Terre Haute IN

Assignee:

Sony Corporation - Tokyo
Digital Audio Disc Corporation - Terre Haute IN

International Classification:

G11B 700

US Classification:

369 58

Abstract:

A machine-readable serial number is formed on a CD-ROM by using a laser to selectively remove a reflective layer from the CD-ROM. Removal of the reflective layer creates defects in addressable information storage locations on the CD-ROM. The serial number is read by detecting the defects. The serial number is used in a software distribution system in which many different software programs are distributed on a single CD-ROM and an access code based on the desired software program and the serial number of a particular CD-ROM is used to "unlock" the desired program on the particular CD-ROM.

US Patent:

58055495, Sep 8, 1998

Filed:

Apr 2, 1996

Appl. No.:

8/626359

Inventors:

Barry A. Fite - Terre Haute IN
Michael L. Mitchell - Terre Haute IN
Russ A. Kunz - Terre Haute IN
Clifford R. Brannon - Terre Haute IN

Assignee:

Sony Corporation - Tokyo
Digital Audio Disc Corporation - Terre Haute IN

International Classification:

G11B 2719

US Classification:

369 54

Abstract:

A machine-readable serial number is formed on a CD-ROM by using a laser to selectively remove a reflective layer from the CD-ROM. Removal of the reflective layer creates defects in addressable information storage locations on the CD-ROM. The serial number is read by detecting the defects. The serial number is used in a software distribution system in which many different software programs are distributed on a single CD-ROM and an access code based on the desired software program and the serial number of a particular CD-ROM is used to "unlock" the desired program on the particular CD-ROM.

US Patent:

54003199, Mar 21, 1995

Filed:

Oct 6, 1993

Appl. No.:

8/132709

Inventors:

Barry A. Fite - Terre Haute IN
Michael L. Mitchell - Terre Haute IN
Russ A. Kunz - Terre Haute IN
Clifford R. Brannon - Terre Haute IN

Assignee:

Digital Audio Disc Corporation - Terre Haute IN

International Classification:

G11B 2330
G11B 2338

US Classification:

3692755

Abstract:

A machine-readable serial number is formed on a CD-ROM by using a laser to selectively remove a reflective layer from the CD-ROM. Removal of the reflective layer creates defects in addressable information storage locations on the CD-ROM. The serial number is read by detecting the defects. The serial number is used in a software distribution system in which many different software programs are distributed on a single CD-ROM and an access code based on the desired software program and the serial number of a particular CD-ROM is used to "unlock" the desired program on the particular CD-ROM.

US Patent:

55419046, Jul 30, 1996

Filed:

Jun 2, 1995

Appl. No.:

8/458476

Inventors:

Barry A. Fite - Terre Haute IN
Michael L. Mitchell - Terre Haute IN
Russ A. Kunz - Terre Haute IN
Clifford R. Brannon - Terre Haute IN

Assignee:

Sony Corporation - Tokyo
Digital Audio Disc Corporation - Terre Haute IN

International Classification:

G11B 700

US Classification:

369 58

Abstract:

A machine-readable serial number is formed on a CD-ROM by using a laser to selectively remove a reflective layer from the CD-ROM. Removal of the reflective layer creates defects in addressable information storage locations on the CD-ROM. The serial number is read by detecting the defects. The serial number is used in a software distribution system in which many different software programs are distributed on a single CD-ROM and an access code based on the desired software program and the serial number of a particular CD-ROM is used to "unlock" the desired program on the particular CD-ROM.