Name of the company who developed analogue copy protection systems to prevent recording to VHS. A variant is used to prevent copying of DVD-Video discs. Macrovision also offer Safedisc(tm) copy protection for CD-ROM and SafeAudio(tm) for CD Audio. www.macrovision.com.
A technology that applied to VHS tape and DVD support prevents unauthorized duplication.
Macrovision is a copy protection system designed to prevent the copying of films onto videotape. Most movies released onto DVD are encoded with Macrovision protection. Macrovision can generally be seen as a lightening and darkening of the video picture during play. Macrovision will be visible if the DVD player is piggybacked through a VCR, and also some projection monitors have a decrease in video quality if Macrovision is present, even if the video signal is not passing first through a VCR. Macrovision operates by interfering with the operation of the AGC (Automatic Gain Control) used on VCR machines.
This is a method of copy protection that rapidly modulates colorburst signals and pulses the vertical blanking signal in order to make videotape copies of protected materials unwatchable. Some older VCRs and beamers have trouble viewing Macrovision protected movies. DVD players typically have Macrovision circuits built in to make copying of DVD movies impossible, however, some DVD players enable Macrovision to be disabled.
Copy protection scheme used to protect DVDs and videotapes from illegal duplication.
An anti-taping process that modifies a signal so that it appears unchanged on most televisions but is distorted and unviewable when played back from a videotape recording. Macrovision takes advantage of characteristics of AGC circuits and burst decoder circuits in VCRs to interfere with the recording process.
DVD copying deterrent. If you try to run a DVD player through the composite video jack on a VCR to record a DVD onto a tape, you will see the incompatible effects of Macrovision. DVD players must be hooked up directly to the TV, or through a receiver with video switching to get a clear signal.
Content-protection company, which markets a form of analog content protection commonly used with pre-recorded tapes and DVDs.
Trademark for video encoding used to inhibit copying of video programs, particularly programs on DVD. A VCR has difficulty maintaining synchronization and black level when it encounters Macrovision encoding.
Copy-protection software used to prevent unauthorized copying of DVD's. It fluctuates the signal output from the DVD player, so that if the signal is run through any secondary device (such as a VCR) en route to the TV, the image will be severely distorted. Some DVD players can be modified to disable Macrovision.
A copy-protection scheme that inhibits illegal copying of analog television programs, videos or DVDs.
A copy-protection scheme that inhibits illegal copying of analog television programs. Macrovision Corporation developed and licenses the technology. Modulation A technique for embedding digital information in a radio carrier wave for broadcast.
A jamming signal encoded into most prerecorded videotapes that makes it difficult to do tape-to-tape copies
A trademarked system designed to prevent unauthorised copying of video material.
A copy-protection technology used on commercial videotapes and DVDs. Resetting a drive's jumper is a simple matter of removing a plastic tab and sliding it onto a different set of posts.
The process used in pre-recorded videotapes to prevent unauthorized duplication. Named for the company that originated process. Places flashing boxes in vertical intervals that confuse the VCR circuits that regulate brightness. This can result in an unwatchable picture or no picture in illegally duplicated tapes. May also interfere with normal playback, even when no unauthorized duplication is attempted.
A copy protection system built into all DVD players and encoded into some DVDs and VHS tapes. It interferes with the synchronization pulses of the output video making it impossible to make high-quality copies.
Video tape copy protection method for VHS video cassette recorders, used on pre-recorded videotapes. "Macrovision" is also the name of the company that invented the process. They also make other scrambling systems.
A form of copy protection (created by the company of the same name) which scrambles unseen parts of a video signal, preventing the creation of viewable copies.
Macrovision is a company that creates electronic copy prevention schemes, established in 1983. The name is also sometimes used to refer to certain video copy prevention schemes developed by that company.