Methods, apparatus, systems and articles of manufacture are disclosed for media crediting and, more particularly, methods and apparatus of media device detection for media meters. An example computing system disclosed herein to detect media devices presenting media comprises a non-transitory computer-readable storage medium, having stored thereon program instructions that, upon execution by the processor, cause performance of a set of operations comprising generating a cluster of media locations based on media identifying information received from a presentation of media at a streaming media device and identifying the streaming media device based on the media devices available at the media locations in the cluster of media locations and an identity of a media device determined to be available in a majority of media locations in the cluster of media locations.

A method for processing a digital audio broadcast signal in a radio receiver, includes: receiving a hybrid broadcast signal; demodulating the hybrid broadcast signal to produce an analog audio stream and a digital audio stream; and using a normalized cross-correlation of envelopes of the analog audio stream and the digital audio stream to measure a time offset between the analog audio stream and the digital audio stream. The time offset can be used to align the analog audio stream and the digital audio stream for subsequent blending of an output of the radio receiver from the analog audio stream to the digital audio stream or from the digital audio stream to the analog audio stream.

A non-transitory computer-readable recording medium on which a program is recorded for a causing a processor to execute a demodulation process. The demodulation process includes detecting a preamble of a wireless signal transmitted from a first transmission station by way of a short wavelength carrier wave, extracting a first signal superimposed on the short wavelength carrier wave, the first signal being extracted from a wireless signal that is identified in accordance with the detection of the preamble, extracting a second signal superimposed on a carrier wave transmitted from a second transmission station, and performing demodulation on a target demodulation signal obtained by superimposing the first signal on the second signal.

A non-transitory computer-readable recording medium on which a program is recorded for a causing a processor to execute a demodulation process. The demodulation process includes detecting a preamble of a wireless signal transmitted from a first transmission station by way of a short wavelength carrier wave, extracting a first signal superimposed on the short wavelength carrier wave, the first signal being extracted from a wireless signal that is identified in accordance with the detection of the preamble, extracting a second signal superimposed on a carrier wave transmitted from a second transmission station, and performing demodulation on a target demodulation signal obtained by superimposing the first signal on the second signal.

The present invention provides a method for transmitting a broadcasting signal. The method for transmitting the broadcasting signal according to the present invention comprises the steps of: encoding data of a plurality of PLPs according to a code rate, wherein the step of encoding data of a plurality of PLPs comprises the steps of LDPC-encoding data of at least one PLP of the plurality of PLPs according to the code rate, bit-interleaving the LDPC-encoded data, and mapping the bit-interleaved data to constellation; mapping the encoded data of the plurality of PLPs to generate at least one signal frame; and modulating data of the generated signal frame through an OFDM scheme and transmitting a broadcasting signal including the modulated data of the signal frame.

The present invention provides a method for transmitting a broadcasting signal. The method for transmitting the broadcasting signal according to the present invention comprises the steps of: encoding data of a plurality of PLPs according to a code rate, wherein the step of encoding data of a plurality of PLPs comprises the steps of LDPC-encoding data of at least one PLP of the plurality of PLPs according to the code rate, bit-interleaving the LDPC-encoded data, and mapping the bit-interleaved data to constellation; mapping the encoded data of the plurality of PLPs to generate at least one signal frame; and modulating data of the generated signal frame through an OFDM scheme and transmitting a broadcasting signal including the modulated data of the signal frame.

A non-transitory computer-readable recording medium on which a program is recorded for a causing a processor to execute a demodulation process. The demodulation process includes detecting a preamble of a wireless signal transmitted from a first transmission station by way of a short wavelength carrier wave, extracting a first signal superimposed on the short wavelength carrier wave, the first signal being extracted from a wireless signal that is identified in accordance with the detection of the preamble, extracting a second signal superimposed on a carrier wave transmitted from a second transmission station, and performing demodulation on a target demodulation signal obtained by superimposing the first signal on the second signal.

A computer-implemented method for creating localized programming content includes receiving a broadcast signal and receiving geographic specific data from a server. The geographic specific data for presentation as geographic specific content is rendered and a combination of the broadcast signal and the geographic specific content is assembled to produce the localized programming content for display.