| 摘要 |
The present invention relates to a service providing method for generating and transmitting a digital television signal stream (10), comprising the steps of providing at least one downscaled sub picture service stream (S2, S4) having a resolution equal to or less than the resolution of the standard definition television SDTV format, multiplexing (S5) the at least one downscaled sub picture service stream in one transport stream and transmitting (S6) said transport stream to a receiving means (3). The present invention further relates to a method for receiving and processing a digital television signal stream (10), whereby the transport stream has multiplexed thereto at least one downscaled sub picture service stream having a resolution equal to or less than the resolution of the standard definition television SDTV format, comprising the steps of receiving (S 11) the transport stream, separating (S12) the at least one downscaled sub picture service stream, and displaying (S16) on a display (12) the at least the downscaled sub picture service stream according to predefined or user defined display parameters. Additionally the present invention relates to a service providing apparatus (5) and to a receiving means (3).
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