摘要:
A particular method may include detecting at a first network device of a video distribution network a fault in transmission of a stream of media data with a media channel. The method also includes, in response to detecting the fault, transmitting a notification that includes fault information corresponding to the detected fault and the stream of media data corresponding to the media channel from the first network device to a second network device of the video distribution network.
摘要:
A method includes receiving digital audio data at an audio adjustment system. The method includes converting a portion of the digital audio data to an analog audio signal with a digital-to-analog converter of the audio adjustment system to form a sample analog audio signal. The method includes determining a dynamic range of the sample analog audio signal with the audio adjustment system. The method also includes modifying a metadata parameter of the digital audio data with the audio adjustment system when the dynamic range of the sample analog audio signal is below a threshold. The metadata parameter is a dialog normalization parameter.
摘要:
A system that incorporates teachings of the present disclosure may include, for example, a server having a controller to receive a digital signal representative of media content where the digital signal includes a main profile version of the media content and one or more lower profile versions of the media content and where the one or more lower profile versions have higher error correction than the main profile version, monitor the main profile version for an undesired condition that jeopardizes video continuity for a viewer of the media content, and transmit one of the one or more lower profile versions over an internet protocol television system to the viewer when the undesired condition is detected, where the transmission of the lower profile version to the viewer maintains video continuity for the viewer. Other embodiments are disclosed.
摘要:
Methods and apparatus for frequency agile band-pass filtering of broadcast signals are disclosed. An example method to receive a broadcast signal for distribution to a plurality of reception sites disclosed herein comprises processing the broadcast signal with a frequency agile band-pass filter to receive the broadcast signal at a headend site for distribution to the plurality of reception sites, monitoring reception quality of the broadcast signal at an operating center separate from the headend site and included in the plurality of reception sites, and sending commands to the frequency agile band-pass filter from the operating center based on the monitored reception quality of the broadcast signal, the commands controlling at least a tuned operating frequency of and an attenuation provided by the frequency agile band-pass filter.
摘要:
A system that incorporates teachings of the present disclosure may include, for example, a server having a controller to receive a digital signal representative of media content where the digital signal includes a main profile version of the media content and one or more lower profile versions of the media content and where the one or more lower profile versions have higher error correction than the main profile version, monitor the main profile version for an undesired condition that jeopardizes video continuity for a viewer of the media content, and transmit one of the one or more lower profile versions over an internet protocol television system to the viewer when the undesired condition is detected, where the transmission of the lower profile version to the viewer maintains video continuity for the viewer. Other embodiments are disclosed.
摘要:
Methods and apparatus for frequency agile band-pass filtering of broadcast signals are disclosed. An example method to receive a broadcast signal for distribution to a plurality of reception sites disclosed herein comprises processing the broadcast signal with a frequency agile band-pass filter to receive the broadcast signal at a headend site for distribution to the plurality of reception sites, monitoring reception quality of the broadcast signal at an operating center separate from the headend site and included in the plurality of reception sites, and sending commands to the frequency agile band-pass filter from the operating center based on the monitored reception quality of the broadcast signal, the commands controlling at least a tuned operating frequency of and an attenuation provided by the frequency agile band-pass filter.
摘要:
A system that incorporates teachings of the present disclosure may include, for example, a server having a controller to monitor spectral characteristics of a target channel, a first channel and a second channel, where the target channel is of a digital terrestrial television system, where the first channel is an upper adjacent channel to the target channel, and where the second channel is a lower adjacent channel to the target channel. The controller is adapted to generate an emission mask based on the monitored spectral characteristics and detect interference between the target channel and at least one of the first and second channels based at least in part on the emission mask. Other embodiments are disclosed.
摘要:
A set-top box device includes a detector module and an electronic programming guide module. The detector module is configured to detect a closed captioning flag in a video stream, and to cache electronic programming guide information for the video stream if the video stream includes the closed captioning flag. The detector module is further configured to create a closed captioning electronic programming guide including the electronic programming guide information. The electronic programming guide module is in communication with the detector module, and is configured to output the closed captioning electronic programming guide.
摘要:
A method includes receiving digital audio data at an audio adjustment system. The method includes converting a portion of the digital audio data to an analog audio signal with a digital-to-analog converter of the audio adjustment system to form a sample analog audio signal. The method includes determining a dynamic range of the sample analog audio signal with the audio adjustment system. The method also includes modifying a metadata parameter of the digital audio data with the audio adjustment system when the dynamic range of the sample analog audio signal is below a threshold. The metadata parameter is a dialog normalization parameter.
摘要:
A closed caption detection system includes a video line selector that outputs a selected line of a video signal, a luminance detector that outputs a luminance level of the selected line, and an alarm that compares the luminance level with a threshold level and provides an alarm based on the result. A method of detecting closed captioning data includes selecting a television channel, decoding closed captioning in the channel, detecting a luminance level of a closed captioning line of the television signal, comparing the luminance level with a threshold level, waiting for a time if luminance level of the selected line is less than the threshold luminance level, and then re-detecting luminance level and re-comparing the luminance levels, then, if the luminance level is less than the threshold level, indicating the absence of closed captioning data.