Panasonic VDR M50 Dvd Camcorder - Page 149

Disc-protect, Howling, Suspending PC, Video selector, Finalize, MultiMediaCard, Linear PCM recording

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Page 149 highlights

Disc-protect: This disables writing to disc (protects disc from writing) so that images recorded on DVD-RAM disc cannot be accidentally deleted and the disc cannot be initialized. Howling: This phenomenon occurs as follows: When the DVD Video Camera is connected to a device, such as TV, the audio input to the microphone of DVD Video Camera is amplified and output from the speakers of TV, and the signal is again input to the microphone: This is repeated to form an endless loop of audio signal, and the signal is amplified up to the audio output amplitude limit of the device. Howling can be prevented by changing the positional relationship between the DVD Video Camera and TV, or by turning down the volume on TV. Suspending PC: This function stores the status of PC before it is turned off: It will restart the PC in the same status as immediately before PC was turned off, when the PC is turned on next time. Video selector: This device can input multiple audio and video signals, and select the desired audio and video signals among those input, to output them. Finalize: This process makes a DVD-R disc recorded on this DVD Video Camera playable on a DVD player, etc. that conforms to 8 cm DVD-R: No further recording can be made on a finalized DVD-R disc. MultiMediaCard: This is a memory card standard jointly developed by Siemens and SanDisk in 1997. The card is 32 mm long x 24 mm wide x 1.4 mm thick, and has 7 pins. It can be inserted into SD Memory Card slot and used. Linear PCM recording: Audio recording format similar to MPEG 1 Audio Layer 2: However, Linear PCM does not compress an audio signal, but instead samples it and converts it to a digital signal to be recorded. Therefore, the amount of data used is larger than that of MPEG 1 Audio Layer 2. Laser pickup block: This block emits laser beam to a disc, and then collects the laser beam reflected from the disc to convert it to an electric signal. The block consists of a laser, lens, receiving element, etc. Laser pickup block 149

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149
Disc-protect:
This disables writing to disc (protects disc from writing) so that images recorded on DVD-RAM disc cannot be
accidentally deleted and the disc cannot be initialized.
Howling:
This phenomenon occurs as follows: When the DVD Video Camera is connected to a device, such as TV, the audio
input to the microphone of DVD Video Camera is amplified and output from the speakers of TV, and the signal is
again input to the microphone: This is repeated to form an endless loop of audio signal, and the signal is amplified
up to the audio output amplitude limit of the device. Howling can be prevented by changing the positional relationship
between the DVD Video Camera and TV, or by turning down the volume on TV.
Suspending PC:
This function stores the status of PC before it is turned off: It will restart the PC in the same status as immediately
before PC was turned off, when the PC is turned on next time.
Video selector:
This device can input multiple audio and video signals, and select the desired audio and video signals among those
input, to output them.
Finalize:
This process makes a DVD-R disc recorded on this DVD Video Camera playable on a DVD player, etc. that conforms
to 8 cm DVD-R: No further recording can be made on a finalized DVD-R disc.
MultiMediaCard:
This is a memory card standard jointly developed by Siemens and SanDisk in 1997. The card is 32 mm long x 24 mm
wide x 1.4 mm thick, and has 7 pins. It can be inserted into SD Memory Card slot and used.
Linear PCM recording:
Audio recording format similar to MPEG 1 Audio Layer 2: However, Linear PCM does not compress an audio signal,
but instead samples it and converts it to a digital signal to be recorded. Therefore, the amount of data used is larger
than that of MPEG 1 Audio Layer 2.
Laser pickup block:
This block emits laser beam to a disc, and then collects the laser beam reflected
from the disc to convert it to an electric signal. The block consists of a laser, lens,
receiving element, etc.
Laser pickup block