| 摘要 |
A circuit for discriminating whether or not a given point exists within a predetermined linear area, comprises first and second registers for storing first and second boundary values defining the predetermined linear area. A first detection circuit receives the first boundary value and a value of the given point, and a second detection circuit receives the second boundary value and the value of the given point. Each of the first and second detection circuits generating a first signal indicating that the boundary value is not greater than the value of the given point, a second signal indicating that the boundary value is equal to the value of the given point, and a third signal indicating that the boundary value is greater than the value of the given point. An output circuit receives the first, second and third signals from each of the first and second detection circuits, and generates an discrimination signal indicating that the value of given point is within the predetermined linear area defined by the first boundary value and the second boundary value.
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