7. The television receiver of claim 1 , further comprising generating the word list, wherein generating the word list includes: monitoring recorded or watched text data corresponding to audio portions of at least one of video content recorded by the television receiver and video content output by the television receiver for immediate display on the display device; evaluating the recorded or watched text data to rank words appearing in the watched or recorded text data by frequency; and adding one or more words appearing in the recorded or watched text data having rankings greater than a threshold ranking to the word list.
1. A television receiver, comprising: one or more processors; a plurality of tuners communicatively coupled with the one or more processors; an audio-video output interface communicatively coupled with the one or more processors; and a non-transitory computer readable storage medium communicatively coupled with and readable by the one or more processors and having stored therein processor-readable instructions that, when executed by the one or more processors, cause the one or more processors to perform operations including: receiving video content using an inactive tuner of the plurality of tuners; obtaining text data corresponding to an audio portion of the video content; evaluating the text data to identify frequencies of words appearing in the text data; receiving input corresponding to determination of one or more user-designated keywords; storing the one or more user-designated keywords to a word list, wherein the word list includes at least a first keyword; determining that the first keyword appears in the text data with a first frequency greater than a first threshold frequency; and generating a first interface for output by the audio-video output interface for displaying on a display device in real-time upon determining that the first frequency is greater than the first threshold frequency, wherein the first interface includes a notification identifying a match of the first keyword.