�� :

�� :

�� "��" - 2004

15.4 � ��: ��

�� : �� 

�� ? �� ?

�� = TV + Video + Internet + SMS + ... > STB

�� = 500 �� + T-Commerce +

Filters + EPG + PPU + Community

�� = �� + �� + �� +

�� + �� + ��"� + �'� + ��

�� : http://www.satil.com/begin_dict_interactv.htm

- - �� (�� ' 2):

�� , �� .

�� -�MS-WebTV, NDS, SKY, OpenTV, Wink, WorldGate

��: �� 2002?

�� : http://www.mlab.uiah.fi/briefhistory/ITV/

- - �� ? (�� /�� ' 3):

22.4 � ��: �� 

��-TV, 1993

�� - �� (Liberate, LinuxTV

�� , �� ?

�� "��" ��

�� , ��

�� ?

EPG �� , ��

Set-top boxes �� WebTV, OpenTV

�� Set-Top boxes �� (��.��)

��

�� , � � Conditional Access �� NDS (VideoGuard)

�� VOD, NVOD, �� .

PVR, DVR

Tivo, ReplayTV ��

�� : �� Set-top box �� ?

�� - ATI, �� PS2, XBOX, �� DVD

�� SMS �� (�� ?)

Convergence ,�� , TVGATE �� COMVERSE

29.4 � ��: ��

�� 

�� - �� , �� 

�� ? �� 