A transmission method for transmitting an emergency warning signal, pertaining to one aspect of the present disclosure, includes: generating control information, the control information including a flag indicating either presence or absence of information related to a region and, when the flag indicates presence, information related to the region; acquiring information related to emergency warning content; and generating the emergency warning signal including the control information and the information related to the emergency warning content. Thus, emergency warning (early warning) information can be transmitted with greater precision.

A transmission method for transmitting an emergency warning signal, pertaining to one aspect of the present disclosure, includes: generating control information, the control information including a flag indicating either presence or absence of information related to a region and, when the flag indicates presence, information related to the region; acquiring information related to emergency warning content; and generating the emergency warning signal including the control information and the information related to the emergency warning content. Thus, emergency warning (early warning) information can be transmitted with greater precision.

Methods and apparatus to calibrate media ratings based on return path data are disclosed. An apparatus includes a processor and memory including instructions that, when executed, cause the processor to: determine an initial rating for the media provided in a first geographic area based on return path data (RPD) tuning information obtained from RPD devices in subscriber households in the first geographic area; determine a first panelist rating for the media provided in a second geographic area based on first panel tuning information obtained from first metering devices in a first subset of panelist households in the second geographic area; determine a nonsubscriber calibration factor based on the first panelist rating; and determine a final rating for the media in the first geographic area by modifying the initial rating based on the nonsubscriber calibration factor.

A transmission method for transmitting an emergency warning signal, pertaining to one aspect of the present disclosure, includes: generating control information, the control information including a flag indicating either presence or absence of information related to a region and, when the flag indicates presence, information related to the region; acquiring information related to emergency warning content; and generating the emergency warning signal including the control information and the information related to the emergency warning content. Thus, emergency warning (early warning) information can be transmitted with greater precision.

A transmission method for transmitting an emergency warning signal, pertaining to one aspect of the present disclosure, includes: generating control information, the control information including a flag indicating either presence or absence of information related to a region and, when the flag indicates presence, information related to the region; acquiring information related to emergency warning content; and generating the emergency warning signal including the control information and the information related to the emergency warning content. Thus, emergency warning (early warning) information can be transmitted with greater precision.

Techniques are disclosed for managing delivery of content and tracking the same via audio cues. For example, a client computing device may monitor ambient sound for audio that matches audio sampled from broadcast content. In response to detecting matching audio, the client computing device transmits tracking data to a centralized content server. The content server records the tracking information and evaluates whether the matching audio was detected within a geographic area associated with the broadcast content. If so, the content server executes additional actions including transmitting supplemental content to the client computing device and/or updating summary level metrics that indicate receptions of broadcast content within target geographic locations.

Techniques are disclosed for managing delivery of content and tracking the same via audio cues. For example, a client computing device may monitor ambient sound for audio that matches audio sampled from broadcast content. In response to detecting matching audio, the client computing device transmits tracking data to a centralized content server. The content server records the tracking information and evaluates whether the matching audio was detected within a geographic area associated with the broadcast content. If so, the content server executes additional actions including transmitting supplemental content to the client computing device and/or updating summary level metrics that indicate receptions of broadcast content within target geographic locations.

Methods and apparatus to calibrate media ratings based on return path data are disclosed. An apparatus includes a processor and memory including instructions that, when executed, cause the processor to: determine an initial rating for the media provided in a first geographic area based on return path data (RPD) tuning information obtained from RPD devices in subscriber households in the first geographic area; determine a first panelist rating for the media provided in a second geographic area based on first panel tuning information obtained from first metering devices in a first subset of panelist households in the second geographic area; determine a nonsubscriber calibration factor based on the first panelist rating; and determine a final rating for the media in the first geographic area by modifying the initial rating based on the nonsubscriber calibration factor.

A method may include receiving radio station data associated with multiple radio stations from one or more radio station providers and filtering the radio stations based at least in part on playback availability. Playback availability may include a broadcast right associated with the one or more radio station providers. The method may also include removing duplicate radio stations and supplying a searchable radio station directory to a platform or a client device.

Systems and methods for increasing an effect of advertisement delivery are provided. The system includes a server and a connected vehicle. The server may be coupled to a database of advertisements and the connected vehicle having external and internal displays may be coupled to the server. Based on input by a user of the connected vehicle from a starting location to a destination, the connected vehicle may be configured to determine a first maximum reward route, which may be determined based in part on a maximum driving distance, a maximum driving time, or a sum of rewards within a route. The connected vehicle may be configured to receive one or more advertisements from the server for reproduction, which are selected based in part on location information of the connected vehicle, local time information, or attributes of people around the connected vehicle. As a result, the advertisements delivery effect is greatly increased.