Techniques are described for expanding and/or improving the Advanced Television Systems Committee (ATSC) 3.0 television protocol in robustly delivering the next generation broadcast television services. In a boundary region between first and second broadcast stations in which a receiver can pick up signals from both stations, a primary tuner receiving signals from plural antennae presents a demanded service while a secondary tuner uses a single antenna to scan for duplicate transmissions of the service, and if one is found, the version with the better quality metrics may be presented.

The present disclosure relates to a broadcast receiving device that minimizes the time required for channel search and a display device including the same, and the broadcast receiving device includes an RF automatic gain controller configured to perform automatic gain control to adjust a gain value according to an input magnitude of an RF signal, and a controller configured to detect the presence or absence of a signal in a preset frequency band based on whether the gain value is changed, and to perform channel search in the preset frequency band according to the presence or absence of a signal in the preset frequency band.

The present disclosure relates to a broadcast receiving device that minimizes the time required for channel search and a display device including the same, and the broadcast receiving device includes an RF automatic gain controller configured to perform automatic gain control to adjust a gain value according to an input magnitude of an RF signal, and a controller configured to detect the presence or absence of a signal in a preset frequency band based on whether the gain value is changed, and to perform channel search in the preset frequency band according to the presence or absence of a signal in the preset frequency band.

The present invention relates to a broadcast reception device. A broadcast reception device according to one embodiment of the present invention comprises: an impedance matching circuit for adjusting an input impedance value of the broadcast reception device; and a control unit, wherein the control unit can control the impedance matching circuit so as to adjust the input impedance value to a predetermined reference impedance value when the mode of the broadcast reception device is a mode for receiving a broadcast signal through a cable, and control the impedance matching circuit so as to adjust the input impedance value to be less than the predetermined reference impedance value when the mode of the broadcast reception device is not the mode for receiving a broadcast signal through a cable. Therefore, since a broadcast signal can be appropriately amplified while a criterion related to a reflection loss is satisfied, network management costs of a network provider can be reduced and a broadcast image of better quality can be provided to a user. Other various embodiments are possible.

A media rendering device and method for scan of channels on the media rendering device is provided. The media rendering device determines a first geographical region associated with a location of the media rendering device. A first set of over-the-air (OTA) channels may be communicated in the first geographical region. The media rendering device determines a second geographical region within a threshold distance from the location of the media rendering device. A second set of OTA channels may be communicated in the second geographical region. The media rendering device receives a first user input to scan the first set of OTA channels and the second set of OTA channels, and configures the first set of OTA channels and the second set of OTA channels on the media rendering device, based on the scan of the first set of OTA channels and the second set of OTA channels.

Methods, systems, and computer readable media may be operable to facilitate switching the video and audio output to a different service when a current service is not presentable. When outputting content from a first service, a multimedia device may identify and switch to an output of content from a second service when the content from the first service becomes unpresentable. The multimedia device may continue to monitor the quality or presentability of the content from the first service, and the multimedia device may switch from an output of content form the second service to an output of content from the first service when the determination is made that the content from the first service is presentable.

Methods, systems, and computer readable media may be operable to facilitate switching the video and audio output to a different service when a current service is not presentable. When outputting content from a first service, a multimedia device may identify and switch to an output of content from a second service when the content from the first service becomes unpresentable. The multimedia device may continue to monitor the quality or presentability of the content from the first service, and the multimedia device may switch from an output of content form the second service to an output of content from the first service when the determination is made that the content from the first service is presentable.

A main stream contains successive content elements of video and/or audio information that encode video and/or audio information at a first data rate. A computation circuit (144) computes main fingerprints from the successive content elements. A reference stream is received having a second data rate lower than the first data rate. The reference stream defines a sequence of the reference fingerprints. A comparator unit (144) compares the main fingerprints with the reference fingerprints. The main stream is monitored for the presence of inserted content elements between original content elements, where the original content elements have main fingerprints that match successive reference fingerprints and the inserted content elements have main fingerprints that do not match reference fingerprints. Rendering of inserted content elements to be skipped. In an embodiment when more than one content element matches only one is rendered. In another embodiment matching is used to control zapping to or from the main stream. In another embodiment matching is used to control linking of separately received mark-up information such as subtitles to points in the main stream.

A main stream contains successive content elements of video and/or audio information that encode video and/or audio information at a first data rate. A computation circuit (144) computes main fingerprints from the successive content elements. A reference stream is received having a second data rate lower than the first data rate. The reference stream defines a sequence of the reference fingerprints. A comparator unit (144) compares the main fingerprints with the reference fingerprints. The main stream is monitored for the presence of inserted content elements between original content elements, where the original content elements have main fingerprints that match successive reference fingerprints and the inserted content elements have main fingerprints that do not match reference fingerprints. Rendering of inserted content elements to be skipped. In an embodiment when more than one content element matches only one is rendered. In another embodiment matching is used to control zapping to or from the main stream. In another embodiment matching is used to control linking of separately received mark-up information such as subtitles to points in the main stream.

A display device and a control method therefor are disclosed. According to the disclosure, the display device comprises: a sensor for sensing the surrounding environmental state; an inputter for receiving a user command for content conversion; an outputter for outputting content corresponding to the user command; and a processor for controlling the outputter such that screen brightness and/or audio output strength of second content corresponding to the user command is changed and outputted, when the user command is inputted, on the basis of the sensed surrounding environmental state and/or output information of currently outputted first content. Therefore, the display device can variously output an output of content image and/or audio according to the surrounding environmental state.