Patent ID: 6353633
Filing Date: 2002-03-05
Classification: G06T,H04N

Abstract:
A method for transposing 8Ã—4 video signals using two 4Ã—4 memories, comprising the steps of:classifying received 8Ã—4 video signals into a first 4Ã—4 video signals of four odd numbered columns and a second 4Ã—4 video signals of four even numbered columns; respectively writing 4 rows of the first 4Ã—4 video signals and the second 4Ã—4 video signals on a first 4Ã—4 memory and a second 4Ã—4 memory of the two memories by a row unit while shifting from a bottom end row to a top end row by a row unit in sequence, with 4 signals in each row written from a right end to a left end of each row in each of the memories; respectively reading the first 4Ã—4 video signals and the second 4Ã—4 video signals on the first 4Ã—4 memory and the second 4Ã—4 memory by a column unit while shifting from a right end column to a left end column in each memory by a column unit in sequence, wherein a sequence of the reading is alternative from the second 4Ã—4 memory to the first 4Ã—4 memory, with 4 signals in each column in the memories read from the bottom end to the top end; and, respectively writing rows of the first 4Ã—4 video signals and the second 4Ã—4 video signals of the 8Ã—4 video signals received at the next time on the columns of the first 4Ã—4 memory and the second 4Ã—4 memory emptied from the left end to the right end due to the shift in the reading while shifting from the top end row to the bottom end row in sequence, with four signals in each row written from the bottom end to the top end of each emptied column in each of the memories.