公开(公告)号：JP2003179925A

公开(公告)日：2003-06-27

申请号：JP2002275956

申请日：2002-09-20

Applicant: ST MICROELECTRONICS SRL

Inventor： BARTOLUCCI VILIM ,  PAU DANILO ,  EMILIANO PICCINELLI

IPC: H04N7/30 ,  G06T9/00 ,  H03M7/30 ,  H04N7/50 ,  H04N19/94

Abstract: PROBLEM TO BE SOLVED: To provide a method for compressing a signal at a higher level compression while maintaining the same quality level and main features of MPEG2 standards. SOLUTION: The process for compressing a digital video signal comprises the steps of starting a frame for constituting the digital video signal from a microblock for receiving movement compensations (13, 14), dividing the frame into the blocks, assembling the set of the coefficient generated by using a discrete cosine transfer (15) so as to generate each set of the coefficients in each block, constituting them to the set of the vectors by masking (M 1 , M 2 , M 3 and M 4 ), detecting the dispersion of the vector, digitizing the vector for usable multiple bits by a pyramid vector digitizer (22), linking the vector to individual digitized pyramids having decided size in response to the number of usable bits, and encoding the digitized vector by corresponding code word. COPYRIGHT: (C)2003,JPO