the signal processing system 214 further communicates with processor 244 via interrupt and messaging capabilities of dhct 200 the components of signal processing system 214 are further capable of performing pid filtering to reject packetized data associated with programs or services that are not requested by a user or unauthorized to dhct 200 such rejection being performed according to the pid value of the packetized streams pid filtering is performed according to values for the filters under the control of processor 244 pid filtering allows for one or more desired and authorized programs and or services to penetrate into dhct 200 for processing and presentation pid filtering is further effected to allow one or more desired packetized streams corresponding to a program e g a 1080p u2014 60 program to penetrate dhct 200 for processing while simultaneously rejecting one or more different packetized stream also corresponding to the same program processor 244 determines values for one or more pids to allow to penetrate or to reject from received information such as tables carrying pid values as described later in this specification in an alternate embodiment undesirable video streams of a program are allowed to penetrate into dhct 200 but disregarded by video decoder 223 a compressed video stream corresponding to a tuned carrier frequency carrying a digital transmission signal can be output as a transport stream by signal processing 214 and presented as input for storage in storage device 273 via interface 275 the packetized compressed streams can be also output by signal processing system 214 and presented as input to media engine 222 for decompression by the video decoder 223 and audio decoder 225 one having ordinary skill in the art will appreciate that signal processing system 214 may include other components not shown including memory decryptors samplers digitizers.