Home > Posted - 08 September 2011
DVD-RAM and DVRs - pause and rewind live TV

An advanced feature installed with high end DVD recorders is the ability to pause, rewind and watch live television. For this feature a DVD recorder will need to have a hard disk installed.

The way it works is as follows, your watching a live TV programme, at the same time the DVR silently records it, you press pause, the device keeps recording, but the DVD recorder can also allow you to simultaneously watch and rewind recorded portions of the programme.

There usually is a limit to the amount of time you can either pause or rewind the recording. Up to recently one hour was about the maximum time a recording could be left on pause.

TiVo and Sky+ are two prime examples of DVRs, which use a non-removable hard disk to record, store and playback digital recording.

A combined DVR and DVD recorders can use either DVD-R/RW, DVD+R/RW or DVD-RAM as the rewritable technology.

All of the rewritable discs are relatively inexpensive, costing less than £1. Some versions can be over-writtern one hundred thousand times without loss of quality.

All of recording technologies have been designed with exacting standards. The verification of software and hardware, and the disc verification management standards ensure a high rate of safe guards for recorded data.

DVD-RAM's are discs which work somewhat like a computers hard disk, as the 'RAM' portion of the term suggests. And is the rewritable technologies most closely related to DVRs.

There has been a variety of DVD-RAM versions.

version 1.0, record rate 1x. SL disc 2.58 GB, DL disc 5.16 GB
version 2.0, record rate 2x. SL disc 4.7 GB, DL disc 9.4 GB
version 2.1, record rate 3x
version 2.2, record rate 5x
version 2.3, record rate 6x
version 2.4, record rate 8x
version 2.5, record rate 12x
version 2.6, record rate 16x


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