System and method for disk software publishers to control disk d

Details System and method for disk software publishers to control disk d System and method for disk software publishers to control disk d

1993-10-29

1996-01-30

Buczinski, Stephen C.

Television

Special applications

Manufacturing

348441, 380 5, H04N 701, H04N 716, H04N 7167

Patent

active

054884101

ABSTRACT:
A system for allowing software publishers to control which video standard(s) can be recovered from an optical disk containing video source material. The disk may be digitally encoded so that any of NTSC, PAL and other video signal standards can be generated upon proper decoding. But the disk also includes a code which can lock out one or more standards. Players for such disks may be capable of generating video signals according to all popular standards, in which case the user selects a desired standard. However, the player will generate a video signal of the selected standard only if there is an appropriate authorization code on the disk. The system allows manufacture of "universal" players without necessarily impacting the contractual and marketing plans of motion picture companies, for example, which release films in different territories at different times. The control technique can be extended to lock out specific territories. Each player has a built-in territory code. The player will play a disk only if the disk contains an authorization code for the player's specific territory.

REFERENCES:
patent: 5036537 (1991-07-01), Jeffers et al.
patent: 5111160 (1992-05-01), Hershberger
Living Books, Arthur's Teacher Problem (CD-ROM 4869913); Novato, CA.; Aug. 1992.

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