Concepts for a digital radio signal

Apparatus for receiving a digital radio signal, configured for deriving, from the digital radio signal, a target group information which indicates a geographical region,

• comparing an information about a geographic location of the apparatus with the target group information to determine whether the apparatus is, according to the information about a geographic location, located within the geographical region,
• if the apparatus is, according to the information about a geographic location, located within the geographical region, refraining from processing a content information signaled in the digital radio signal,
• wherein the target group information is indicative of at least three geographical positions forming a polygon to indicate the geographical region, wherein the apparatus is configured for using differential decoding for deriving the geographical positions from the target group information.

Apparatus for providing a digital radio signal, the digital radio signal comprising a first channel for carrying side information, and a second channel for carrying content information, the apparatus being configured for providing, in the first channel, an alarm status indication, which indicates whether an alarm announcement is active or inactive.

Method for receiving a digital radio signal, so that the digital radio signal comprises a first channel for carrying side information, and a second channel for carrying content information, the method comprising:

• deriving, from the first channel, an alarm status indication, which indicates whether an alarm announcement is active or inactive.

Method for receiving a digital radio signal, comprising deriving, from the digital radio signal, a target group information which indicates a geographical region,

• comparing an information about a geographic location with the target group information to determine whether the geographic location is, according to the information about a geographic location, located within the geographical region, and
• if the geographic location is, according to the information about a geographic location, located within the geographical region, refraining from processing a content information signaled in the digital radio signal,
• wherein the target group information is indicative of at least three geographical positions forming a polygon to indicate the geographical region, wherein the method comprises using differential decoding for deriving the geographical positions from the target group information.

Method for providing a digital radio signal so that the digital radio signal comprises

• a first channel for carrying side information, and a second channel for carrying content information, the method comprising:
• providing, in the first channel, an alarm status indication, which indicates whether an alarm announcement is active or inactive.