About dubbing 10
When digital telecast is recorded in digital form and copied, the one the same no matter how it copies it can be made because there is no deterioration in the image quality at all. With this, there is a possibility that the person who reproduces the one with the copyright and uses it also comes out. Then, copy once has been adopted. When this failed in the copy and the move, the content of recording was occasionally lost. Dubbing 10 is the one taking the place of copy once.
What is dubbing 10?
As for dubbing 10, operation in a terrestrial digital broadcasting and satellite digital Television Broadcasting was begun in place of copy once. This makes nine times of the copy and one time of the move (In a word, it is said dubbing 10) can.
Copy of dubbing 10 and frequency limitation of move
It is dubbing 10 to enable nine copies of the first generation and moves of one time (movement) after the ground digital television and the BS digital broadcasting of dubbing 10 are recorded with a built-in tuner.
Therefore, dubbing 10 is not applied as for the method excluding this. When the output of an analog image of the digital recording equipment is recorded with the equipment for dubbing 10, the copy after that Since the second generation ,in a word, (grandchild) is prohibited.
It is the same as copy once and dubbing 10 that only the first generation (child) can copy it. Only the first generation (child) that recorded from broadcasting was able to copy copy once. Copying the one that broadcasting was recorded to the origin and other digital devices in dubbing 10 becomes the first generation (child).
The move is the same as the copy of the first generation (reproduction).
The frequency of the copy is limited to a digital copy, and the tenth times are automatically moves (movement). It is not possible to do excluding the move.
When the move is done when the frequency of the copy is not nine times, the copy after that is prohibited because it always becomes the first generation's (child) copy by dubbing 10 having done the move ahead.
When analog copying it
The analog copy done from a digital recorder via the analog image output is not counted as a frequency controlled by dubbing 10 in dubbing 10. In a word, when the output by an analog connection is used, nine copies or more become possible.
However, the next generation cannot be made from the one copied by the analog image output further. Because the CGMS-A signal is output to the analogue signal, it is not possible to copy it.
What is CGMS-A(Copy Generation Management System - Analog)?
The recorder side stops automatically even if it tries to copy the image from which the copy is prohibited with a recording equipment, it will be not able to record, and it does.
This function depends on the function of the recorder side. Therefore, it is possible to record by removing the signal of the correspondence the use of the recorder, and before it records of no operation like this.
The copy control executed by the ground wave digital and BS digital broadcasting is this CGMS now.