Equalizer based symbol timing recovery with symbol enabled control

1. A method for use in a receiver, the method comprising:

determining a location of at least one tap of an equalizer having a feed-forward filter; and

adjusting a position of the at least one tap of the equalizer if the determined location is within a number of taps of an edge of the equalizer, wherein if the determined location is within the number of taps of a left edge of the equalizer, the adjusting step includes:

shifting the at least one tap at least one sample position to the right, and

inhibiting processing of an output sample from the feed-forward filter of the equalizer.

2. The method of claim 1 , wherein the determining step comprises:

determining representative energy levels in one, or more, taps of the equalizer as a function of associated tap coefficient values for determining the location of the at least one tap.

3. The method of claim 1 , wherein if the determined location is within the number of taps of a right edge of the equalizer, the adjusting step includes:

shifting the at least one tap at least one sample position to the left.

4. The method of claim 3 , wherein the adjusting step includes:

inhibiting a shifting of samples in a shift register of the feed-forward filter of the equalizer while at the same time enabling downstream processing such that an input sample is reinserted into an output signal of the feed-forward filter.

5. The method of claim 1 , wherein inhibiting processing of an output sample from the feed-forward filter includes:

inhibiting a clock for use by a feed-back filter of the equalizer such that the output sample from the feed-forward filter of the equalizer is not processed by the feed-back filter.

6. The method of claim 1 , wherein the receiver is an ATSC (Advanced Television Systems Committee) receiver.

7. Apparatus for use in a receiver, the apparatus comprising:

an equalizer including a feed-forward filter; and

a controller for determining a location of at least one tap of the equalizer and adjusting a position of the at least one tap of the equalizer if the determined location is within a number of taps of an edge of the equalizer, wherein if the determined location is within the number of taps of a left edge of the equalizer:

the controller shifts the at least one tap at least one position to the right, and

processing of an output sample from the feed-forward filter of the equalizer is inhibited.

8. The apparatus of claim 7 , wherein the controller determines representative energy levels in one, or more, taps of the equalizer as a function of associated tap coefficient values for determining the location of the at least one tap.

9. The apparatus of claim 7 , wherein the controller shifts the at least one tap at least one position to the left if the determined location is within the number of taps of a right edge of the equalizer.

10. The apparatus of claim 9 , wherein the equalizer is inhibited from shifting samples in a shift register of the feed-forward filter of the equalizer while at the same time enabling downstream processing such that an input sample is reinserted into an output signal of the feed-forward filter.

11. The apparatus of claim 7 , wherein a clock for use by a feed-back filter of the equalizer is inhibited such that the output sample from the feed-forward filter of the equalizer is not processed by the feed-back filter.

12. The apparatus of claim 7 , wherein the receiver is an ATSC (Advanced Television Systems Committee) receiver.

13. The method of claim 1 , wherein the at least one tap of the equalizer includes a main tap.

14. The method of claim 1 , wherein the number of taps is at least two.

15. The apparatus of claim 7 , wherein the at least one tap of the equalizer includes a main tap.

16. The apparatus of claim 7 , wherein the number of taps is at least two.