公开(公告)号：EP3295568A1

公开(公告)日：2018-03-21

申请号：EP16719648

申请日：2016-04-15

Applicant: QUALCOMM INC

Inventor： MILNER ADRIENNE ,  ANSARI AMIN ,  SENIOR RICHARD ,  BICA VITO REMO

IPC: H03M7/30 ,  G06F12/08 ,  H04N19/91

CPC classification number: H03M7/4062 ,  G06F2212/401 ,  H03M7/30 ,  H03M7/3084 ,  H03M7/4006 ,  H03M7/42 ,  H03M7/48 ,  H04N19/423 ,  H04N19/91

Abstract: Data compression systems, methods, and computer program products are disclosed. For each successive input word of an input stream, it is determined whether the input word matches an entry in a lookback table. The lookback table is updated in response to the input word. Input words may be of a number of data types, including zero runs and full or partial matches with an entry in the lookback table. A codeword is generated by entropy encoding a data type corresponding to the input word. The lookback table may be indexed by the position of the input word in the input stream.