The present technology relates to a reception apparatus, a reception method, a transmission apparatus, and a transmission method that enable provision of an emergency warning service more suited to actual operation. Provided is a reception apparatus that includes a reception section and a demodulation section. The reception section receives a physical layer frame transported as a broadcast signal. The demodulation section demodulates physical layer signalling acquired from the physical layer frame and monitors whether or not emergency warning information has been transported on a basis of emergency warning notice information acquired as a result of the demodulation. In a case where the emergency warning notice information indicates that the emergency warning information has been transported, the reception apparatus starts up automatically. The present technology is applicable, for example, to a transport system for transporting a physical layer frame compliant with a DVB-T2 standard.

The present technology relates to a reception apparatus, a reception method, a transmission apparatus, and a transmission method that enable provision of an emergency warning service more suited to actual operation. Provided is a reception apparatus that includes a reception section and a demodulation section. The reception section receives a physical layer frame transported as a broadcast signal. The demodulation section demodulates physical layer signalling acquired from the physical layer frame and monitors whether or not emergency warning information has been transported on a basis of emergency warning notice information acquired as a result of the demodulation. In a case where the emergency warning notice information indicates that the emergency warning information has been transported, the reception apparatus starts up automatically. The present technology is applicable, for example, to a transport system for transporting a physical layer frame compliant with a DVB-T2 standard.

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.

A method includes identifying, from radial contours indicating listening areas for respective radio stations, each radial contour specifying a geographic location of a respective radio station and a plurality of segments surrounding the radio station, each segment defining a radius outward from the geographic location defining a boundary of the listening area for the corresponding segment, a segment of a radial contour of a radio station currently tuned to by a radio receiver for a listener location; responsive to the listener location exceeding the radial extent from the radio station for the segment, identifying an alternate radio station available for the listener location; identifying, from the radial contours and the listener location, a segment of a radial contour of the alternate radio station; and responsive to the listener location being within a radial extent from the alternate radio station for the segment, transitioning to the alternate radio station.

Disclosed is a system and method for determining output transmission power for radio signal transmission, from an interception transmitter and from an announcement transmitter, respectively, to at least one announcement receiver, wherein each announcement receiver is in a respective motor vehicle, the method comprising: receiving an input signal to be suppressed; determining a first field strength of the input signal, at a first frequency f.sub.I, at a position POS.sub.R; determining a first transmission power of a first radio signal, intended to be transmitted by the interception transmitter, needed to suppress the input signal at an interception transmission distance; determining a second field strength of at least one of atmospheric noise and the input signal at a second frequency f.sub.A, at the position POSR; and determining a second transmission power of second radio signal comprising an announcement to be transmitted by the announcement transmitter to the at least one announcement receiver.

Disclosed is a system and method for determining output transmission power for radio signal transmission, from an interception transmitter and from an announcement transmitter, respectively, to at least one announcement receiver, wherein each announcement receiver is in a respective motor vehicle, the method comprising: receiving an input signal to be suppressed; determining a first field strength of the input signal, at a first frequency f.sub.I, at a position POS.sub.R; determining a first transmission power of a first radio signal, intended to be transmitted by the interception transmitter, needed to suppress the input signal at an interception transmission distance; determining a second field strength of at least one of atmospheric noise and the input signal at a second frequency f.sub.A, at the position POSR; and determining a second transmission power of second radio signal comprising an announcement to be transmitted by the announcement transmitter to the at least one announcement receiver.

A radio receiver comprises radio frequency (RF) receiver circuitry that receives a radio broadcast signal, an Internet network interface, a display, a memory, processing circuitry, and a client application including instructions for execution by the processing circuitry. The client application is configured to: determine geographic location information of the radio receiver; determine radio broadcasts that are available to the radio receiver using the geographical location information; select metadata, from metadata stored in the memory, that is associated with the radio broadcasts available to the radio receiver; and present information included in the selected metadata using the display according to the received radio broadcast signal.

A radio receiver comprises radio frequency (RF) receiver circuitry that receives a radio broadcast signal, an Internet network interface, a display, a memory, processing circuitry, and a client application including instructions for execution by the processing circuitry. The client application is configured to: determine geographic location information of the radio receiver; determine radio broadcasts that are available to the radio receiver using the geographical location information; select metadata, from metadata stored in the memory, that is associated with the radio broadcasts available to the radio receiver; and present information included in the selected metadata using the display according to the received radio broadcast signal.

Implementing and applying a database with radio station information that is gathered from client devices as stations become available to a plurality of users (i.e., crowd sourced radio station information) and allowing for a client device to download only the radio station information that is pertinent to the travel route of the user and/or radio station selection criteria associated with the client device or the user. Radio station information can be rendered via a graphical interface of a client device to allow the user to informatively select a new radio station, either before or as a current radio signal degrades to the point of being unusable. Radio station information may be rendered to cause the user's terrestrial radio to tune to a new station.