Patent ID: 6032242
Filing Date: 2000-02-29
Classification: G06F,G06T

Abstract:
A scanning address generator for generating address locations of two-dimensional array data stored in an alternate scan address format, comprising:a first up/down counter having inputs containing an up signal, a down signal, and a reset signal, and having outputs representing an X-axis address;a second up/down counter having inputs containing an up signal, a down signal, a first reset signal, a second reset signal and a third reset signal, and having outputs representing a Y-axis address; anda control signal generator having a first set of inputs coupled to the outputs of the first up/down counter for receiving the X-axis address, a second set of inputs coupled to the outputs of the second up/down counter for receiving the Y-axis address, a first set of outputs coupled to the inputs of the first up/down counter, a second set of outputs coupled to the inputs of the second up/down counter, the control signal generator generating a subsequent address from the X-axis address output and Y-axis address output by controlling the up signal, the down signal, and the reset signal of the first up/down counter according to the alternate address access pattern and by controlling the up signal, the down signal, the first reset signal, the second reset signal, and the third reset signal of the second up/down counter according to the alternate address access pattern.