A vehicle includes a plurality of broadcast reception antennae; a speaker; and an audio-video-navigation (AVN) device electrically connected to the plurality of broadcast reception antennae and the speaker; wherein the AVN device is configured to receive broadcast signals of a plurality of different frequencies from the plurality of broadcast reception antennae, synthesize the broadcast signals of different frequencies, and provide the synthesized broadcast signal to the speaker to output a sound corresponding to the synthesized broadcast signals.

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.

An example apparatus to monitor media that is presented via a mobile device includes: an application monitor to determine when media presentation software is being executed by the mobile device; and a metering information collector to collect at least one of a signature or a code of the media presented by the media presentation software based on the media presentation software being executed by the mobile device.

Embodiments herein provide for a Low-Frequency (LF) broadcast system that improves on the LORAN-C system to help optimize the use of available spectrum while modernizing the signal structure of broadcast signals. In particular, embodiments can utilize an Orthogonal Frequency Division Multiplexing (OFDM) signal structure to broadcast timing and data signals in successive symbols of an OFDM resource block. Signals can include, for example, comb-1, comb-2, or comb-3 signal structures. Other signal aspects such as muting schemes, modulation, frequency offsets, and the like may vary, depending on desired functionality.

Broadcast positioning systems supporting location services through over-the-air broadcast television (TV) signals are disclosed. The broadcast positioning system supports a broadcast TV signal format that includes a transmission time of the broadcast TV. The transmission time of the broadcast TV signal is used by a TV signal receiver to determine the propagation delay of the broadcast TV signal between the TV signal transmitter and the TV signal receiver. The TV signal receiver is also configured to receive multiple broadcast TV signals from multiple TV broadcasters, wherein the same delay of arrival for those broadcast TV signals can be determined. In this manner, the TV signal receiver can use the determined multiple delays of arrival from the multiple received broadcast TV signals as time-of-arrival (TOA) and the known locations of the antenna radiating these multiple broadcast TV signals to perform a trilateration or multilateration calculation to determine its position.

Broadcast positioning systems supporting location services through over-the-air broadcast television (TV) signals are disclosed. The broadcast positioning system supports a broadcast TV signal format that includes a transmission time of the broadcast TV. The transmission time of the broadcast TV signal is used by a TV signal receiver to determine the propagation delay of the broadcast TV signal between the TV signal transmitter and the TV signal receiver. The TV signal receiver is also configured to receive multiple broadcast TV signals from multiple TV broadcasters, wherein the same delay of arrival for those broadcast TV signals can be determined. In this manner, the TV signal receiver can use the determined multiple delays of arrival from the multiple received broadcast TV signals as time-of-arrival (TOA) and the known locations of the antenna radiating these multiple broadcast TV signals to perform a trilateration or multilateration calculation to determine its position.

The present disclosure relates to a method for operating a media reproduction device for a motor vehicle. Media information is received in a first and a second reception mode and reproduced based on the strength of the first and second reception. A temporal transmission delay between the reception modes is detected and compensated for by an electronic computing device. The surroundings of the motor vehicle are divided into at least two reception tiles, and each reception tile is assigned a first and a second reception strength value. The electronic computing device decides which reception mode to use to receive the media information is in each reception tile and when to compensate the temporal transmission delay if it has been determined that the media information is received in the first reception tile in the first reception mode and in the second reception tile in the second reception mode.

The present disclosure relates to a method for operating a media reproduction device for a motor vehicle. Media information is received in a first and a second reception mode and reproduced based on the strength of the first and second reception. A temporal transmission delay between the reception modes is detected and compensated for by an electronic computing device. The surroundings of the motor vehicle are divided into at least two reception tiles, and each reception tile is assigned a first and a second reception strength value. The electronic computing device decides which reception mode to use to receive the media information is in each reception tile and when to compensate the temporal transmission delay if it has been determined that the media information is received in the first reception tile in the first reception mode and in the second reception tile in the second reception mode.

A method for providing a broadcast signal frequency capable of determining an optimal broadcast signal frequency at an accurate location includes collecting vehicle data including location information and information related to a broadcasting function from a plurality of vehicles, determining, based on the vehicle data, a first frequency for receiving a first broadcasting channel with highest reception quality in a first location and a second frequency for receiving the first broadcasting channel with highest reception quality in a second location, and transmitting information on the first frequency and the second frequency to a first vehicle.

A vehicle includes: a communication device; an audio device; a global positioning system; and a control device configured to receive radio station information from a server through the communication device, the radio station information including information on a plurality of areas, radio frequencies for each of the plurality of areas, and a plurality of radio station names corresponding to each of the radio frequencies, identify location information of the vehicle based on a signal received through the global positioning system, receive a first signal of a first radio frequency through the audio device, and change a setting of a radio frequency of the audio device, based on the first radio frequency, the radio station information, and the location information of the vehicle, in response to a field strength of the first signal being equal to or less than a reference field strength.