Receiver for analog and digital television signals

DETAILED DESCRIPTION What is claimed is: 1.
A receiver comprising: a tuner for converting input signals to IF signals, the input signals including information in either one of an analog signal format and a digital signal format; an IF filter having a passband for passing the IF signals and an IF amplifier for amplifying the IF signals, wherein said IF amplifier and said IF filter provide an amplified and filtered IF signal including information in either one of an analog signal format and a digital signal format; an analog-to-digital converter coupled for converting the amplified and filtered IF signal including information in either one of an analog signal format and a digital signal format into a sequence of digital words including information in either one of an analog signal format and a digital signal format; a first signal processor for processing the sequence of digital words including information in the analog signal format; and a second signal processor for processing the sequence of digital words including information in the digital signal format.
2.
The receiver of claim 1 further comprising a controllable switch for selecting an output of one of said first signal processor and said second signal processor.
3.
The receiver of claim 2 further comprising a detector responsive to the sequence of digital words for controlling said controllable switch.
4.
The receiver of claim 3 wherein said detector detects at least one of: (a) a carrier signal included in the sequence of digital words that include information in the analog signal format, (b) a synchronization signal included in the sequence of digital words that include information in the analog signal format, (c) a pilot signal included in the sequence of digital words that include information in the digital signal format, and (d) symbol timing included in the sequence of digital words that include information in the digital signal format.
5.
The receiver of claim 3 wherein said detector is responsive to the timing and recovery of symbols included in the sequence of digital words that include information in the digital signal format