Patent ID: 7139037
Filing Date: 2006-11-21
Classification: H04N

Abstract:
1. A circuit comprising: a first circuit portion connected to a first input, the first circuit portion including at least one delay element; and a second circuit portion attached to the first circuit portion, the second circuit portion including at least one delayed signal input from the at least one delay element, and an adjustment input, the adjustment input not passing through the at least one delay element, wherein when there is no adjustment input, the circuit acts as a filter, and wherein the adjustment input changes the level of the output without the adjustment signal being filtered, wherein the second circuit portion includes at least one coefficient circuit connected to one of the at least one delayed signal input and to the adjustment input, and wherein the output of the at least one coefficient circuit is to a second delay element and the output of the second delay element is sent to the at least one coefficient circuit.