Toshiba RD-XS54SU owner manual Others, To protect recorded content, Technical Information

Recording

Others

To protect recorded content

You can protect recorded contents of the HDD or a DVD-RAM disc from unexpected deletion. Protection is provided for each title (original).

1)Perform steps 1 and 2 in “Playing recorded

contents (CONTENT MENU)” ( page 60) to select a title.

2)Press QUICK MENU button, and press / buttons to select “Title information”. Then press ENTER button.

3)Press QUICK MENU button, and press / buttons to select “Lock” and then press ENTER button.

The mark appears.

Notes

•To cancel protection, repeat this procedure.

•Disc initialization erases all titles on a disc even if they are protected.

•Executing “All HDD titles delete”( page 186) erases all titles on the HDD even if they are protected.

Technical Information

About recording time

The recording time of a typical VCR (Video Cassette Recorder) is determined by the length of a video tape and recording speed (SP, LP, etc.). Video tapes with various recording times are available on the market. On the other hand, the recording time of a DVD-RAM/ R/RW depends on the bit rate (Mbps: amount of data transmitted per second), which can be varied in MPEG2 (Moving Picture Experts Group2) compression technology.

As an example, when you pour water into a bucket from a faucet, the faster the water flows, the sooner the bucket is filled with water. On the other hand, the slower the water flows, the more slowly the bucket is filled. A DVD-RAM/R/RW is, so to speak, like a bucket, and the degree you turn the faucet is bit rate, the time required to fill the bucket with water is the recording time available for a disc. The higher you set the bit rate (making much more water flow), the sooner a disc is filled. Consequently, the recording time becomes shorter. The lower you set the bit rate, the longer time it takes to fill a disc.

Relay recording HDD DVD-RAM

This function automatically diverts a recording to the HDD if a DVD-RAM disc is near capacity.

When the remaining time of the DVD-RAM disc has reached about 10 minutes, the recorder starts recording the same content on the HDD as well as DVD-RAM. The chapter marks are automatically made at the start and end points of the overlapped recording portion. You can delete the unnecessary overlapped portion afterwards by referring to the chapter marks.

Recording end

DVD-RAM disc

10min.

HDD

Recording start

To engage the Relay Recording function, set “Relay recording” to “On” ( page 185).

Notes

•When the capacity of the HDD is not sufficient, the operation is canceled.

•While recording the overlapped portion, you cannot pause the recording.

•While recording the overlapped portion, you cannot play a recorded title on the same disc.

•When another programmed recording is set just after the relay recording, the relay recording stops about 2 minutes before the next programmed recording starts.

About picture quality (SP, LP, MN (Manual) mode)

The higher you set the bite rate, the more the volume of information for the picture. The lower the bit rate, the less the volume of picture information.

However a high bit rate does not always mean that the picture quality is high. The difference between the 1.4 Mbps and 9.2 Mbps is obvious, but when comparing similar bit rates, the difference may be insignificant. Generally when you set the bit rate low for a longer recording, the data volume shortage will result in a lack of detail information. As a result, the picture quality is decreased (more noticeable with dynamically moving images). For example, square noises (block noise) may occur in a scene with fast action or a scene with light and shadows, such as a water surface.

This recorder has two settings, 2 hour recording at “SP” mode or 4 hour recording at “LP” mode (both assume a blank 4.7 GB DVD-RAM). It is recommended to consider the “SP” mode as a standard mode and use the “LP” mode when you want to record for long time regardless of the picture quality. When you want to record a music program or animation with high picture quality, it is recommended that you select the “MN” mode. If you select more than 6 Mbps, you can usually record with considerably higher picture quality. However the higher you set the bit rate, the shorter the recording time.

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