Display device ON/OFF detection methods and apparatus are disclosed. Example display activity detectors disclosed herein are to extract regions from respective ones of captured video frames, the regions corresponding to a depiction of a display of a monitored media device Disclosed example display activity detectors are also to compute a distance metric that is to represent an amount a first one of the regions of a first one of the captured video frames differs from a corresponding second one of the regions of a second one of the captured video frames. Disclosed example display activity detectors are further to compare the distance metric to a threshold to determine whether the monitored media device is ON or OFF.

Systems and methods described herein provide for monitoring of video streaming events. Techniques disclosed include rendering a first omnidirectional video associated with a first viewpoint. In response to a request to access an omnidirectional video associated with another viewpoint, a time of the request and information identifying the other viewpoint is recorded. Techniques disclosed also include identifying a time of switching into rendering of a second omnidirectional video associated with a second viewpoint, and reporting a viewpoint switching latency, representing a difference between the identified switching time and a recorded request time associated with information identifying the second viewpoint.

Systems and methods described herein provide for monitoring of video streaming events. Techniques disclosed include rendering a first omnidirectional video associated with a first viewpoint. In response to a request to access an omnidirectional video associated with another viewpoint, a time of the request and information identifying the other viewpoint is recorded. Techniques disclosed also include identifying a time of switching into rendering of a second omnidirectional video associated with a second viewpoint, and reporting a viewpoint switching latency, representing a difference between the identified switching time and a recorded request time associated with information identifying the second viewpoint.

Techniques described herein improve viewer experience by leveraging the ability of a viewer's device to access an over-the-top (OTT) content via the device's multi-channel connections to an OTT content server. In an example embodiment, the device receives the OTT content via a first channel and performs cross-party diagnostic testing through a second channel. In this embodiment, a diagnostic app in the device compares measured signals in the first channel with a first set of threshold values and further compares acquired telemetry data in the second channel with a second set of threshold values. Based on the comparison results, the device determines the possible root cause of the interruption. Further, the device performs an in-depth diagnostic testing on a determined possible root cause (e.g., OTT content server) and sends an in-depth diagnostic report to a viewer.

Techniques described herein improve viewer experience by leveraging the ability of a viewer's device to access an over-the-top (OTT) content via the device's multi-channel connections to an OTT content server. In an example embodiment, the device receives the OTT content via a first channel and performs cross-party diagnostic testing through a second channel. In this embodiment, a diagnostic app in the device compares measured signals in the first channel with a first set of threshold values and further compares acquired telemetry data in the second channel with a second set of threshold values. Based on the comparison results, the device determines the possible root cause of the interruption. Further, the device performs an in-depth diagnostic testing on a determined possible root cause (e.g., OTT content server) and sends an in-depth diagnostic report to a viewer.

Methods, systems, and apparatuses are described for performing a calibration process for synchronizing audio signals with video signals. The calibration process may be performed between one or more devices of an entertainment system and a handheld device. Device(s) (e.g., a television and speaker(s)) of the entertainment system are configured to playback video signal(s) and audio signal(s), respectively. The handheld device is configured to determine an amount of synchronization error between the audio signal and the video signal, determine a synchronization correction value based on the determined amount, and provide the synchronization correction value to device(s) of the entertainment system. The device(s) may use the synchronization correction value to correct the delay between the video signal and the audio signal such that the video signal and the audio signal are synchronized.

Methods, systems, and apparatuses are described for performing a calibration process for synchronizing audio signals with video signals. The calibration process may be performed between one or more devices of an entertainment system and a handheld device. Device(s) (e.g., a television and speaker(s)) of the entertainment system are configured to playback video signal(s) and audio signal(s), respectively. The handheld device is configured to determine an amount of synchronization error between the audio signal and the video signal, determine a synchronization correction value based on the determined amount, and provide the synchronization correction value to device(s) of the entertainment system. The device(s) may use the synchronization correction value to correct the delay between the video signal and the audio signal such that the video signal and the audio signal are synchronized.

Methods, systems, and computer readable media can be operable to monitor for and alert the occurrence of pre-failure indicators at a set-top box (STB) disk. Results of self-monitoring tests, short tests, and maximum/minimum performance tests may be used to identify the potential for a STB disk failure. Moreover, critical error events at the STB may be logged, and the health of the STB disk may be determined based on the logged critical error events. Test results and critical error event logs may be used to predict an impending failure of a STB disk, and a notification may be output to a user or technician indicating the potential need to replace the STB or STB disk.

An output circuit includes a level adjustment circuit and a determination circuit. The output circuit is employed for generating an output to an output terminal of the output circuit, where the output terminal is coupled to a connecting port. The level adjustment circuit is coupled to the output terminal and is employed for generating at least one adjusted signal according to a first voltage signal at the output terminal in a first period and a second voltage signal at the output terminal in a second period. The determination circuit is coupled to the level adjustment circuit and is employed for generating a determination signal according to the at least one adjusted signal, wherein the determination signal indicates whether a load is connected to the connecting port.

The present disclosure relates to an image display apparatus. The image display apparatus according to one embodiment of the present disclosure comprises a plurality of input terminals; and a switching circuit including a first receiving end to receive a signal through a first input terminal among the plurality of input terminals, a second receiving end to receive a signal through a second input terminal among the plurality of input terminals, a first transmitting end to transmit a signal received through the first or the second receiving end to a signal processor, and a second transmitting end to output an output signal to the first input terminal in response to a cable being connected between the first and the second input terminal, and a signal being not received. Accordingly, it is possible to determine whether a cable connected to an input terminal is defective.