Knowing the value of the control word at a given moment is of relatively little value, as under normal conditions, content providers will change the control word several times per minute.
42.
Because the length of the complete control word is so small ( 64 bits ), delivery of the control words to many different clients is easily possible on a home internet connection.
43.
Because the length of the complete control word is so small ( 64 bits ), delivery of the control words to many different clients is easily possible on a home internet connection.
44.
If enough users were to correctly type the control word, but incorrectly type the second word which OCR had failed to recognize, then the digital version of documents could end up containing the incorrect word.
45.
If we don't have D registers, we have to look at the control word at the base of the D [ 5 ] frame, which points to the frame containing the D [ 4 ] environment.
46.
We then look at the control word at the base of this environment to find the D [ 3 ] environment, and continue in this fashion until we have followed all the links back to the required lexical level.
47.
The CA subsystem in the receiver will decrypt the control word only when authorised to do so; that authority is sent to the receiver in the form of an " entitlement management message " ( EMM ).
48.
Later, when the B6500 was designed, it was realized that the 1-bit control word / numeric distinction was a powerful idea and this was extended to three bits outside of the 48 bit word into a tag.
49.
Typically, a legitimate smart card is attached to a host digital television receiver, which is equipped with software to share the decrypted 64-bit " control word " key over a computer network, such as the Internet.
50.
The Zero 1 system supplied the track with a 20 V square wave at the local mains frequency ( 50 Hz in the UK, 60 Hz in the US ) with a 32-bit control word replacing every third cycle.
