GRID SIGNAL RECEIVER, WIRELESS POINTIG SYSTEM HAVING ITS AND METHOD FOR MOTION VECTOR COMPENSATION CAPABLE OF SMOOTH POINTING

摘要

PURPOSE: A grid signal receiver capable of soft pointing, a wireless pointing system and a motion vector correcting method thereof are provided to soften movement of pointing by producing a motion vector according to movement of gridlines. CONSTITUTION: An accumulation motion vector, a counting value and a predetermined vector increment are set to 0. The maximum motion vector are set to 100. The counting value is measured. When one grid line moves, the predetermined vector increment is calculated in advance. In case a wave of a signal B does not descend, the predetermined vector increment is totaled up in the accumulation motion vector value. If it arrives to sampling timing for applying the predetermined vector increment, an accumulation motion vector value is applied.