公开(公告)号：CA2173712A1

公开(公告)日：1997-07-03

申请号：CA2173712

申请日：1996-04-09

Applicant: ATI TECHNOLOGIES INC

Inventor： KITAMURA JOHN

IPC: G06T9/00 ,  H04N7/04 ,  H04N5/60

Abstract: A method of reconstructing a stream of digital frequency domain audio signal samples into audio signals comprising parsing the stream of samples and reconstructing subband data in the frequency domain, processing the subband data to obtain a processed frequency domain digital audio signal, and constructing a time domain audio output signal from the processed frequency domain digital audio signal.

公开(公告)号：CA2210014C

公开(公告)日：2000-09-19

申请号：CA2210014

申请日：1997-07-10

Applicant: ATI TECHNOLOGIES INC

Inventor： LAKSONO INDRA ,  THUT ANDREAS ,  KITAMURA JOHN

IPC: G09G5/02 ,  H04N9/67 ,  H04N7/01 ,  G06F3/14

Abstract: A method of converting video data from a YUV format to an RGB format comprising (a) performing a matrix transformation of Y, U and V pixel data of a set of possible Y, U and V parameters into corresponding R, G and B parameters, (b) determining whether the set of R, G and B parameters forms a first lookup table whose size exceeds the size of a particular memory space, (c) in the event the lookup table is too large for the memory space, truncating least significant bits of at least the U and V parameters, (d) repeating steps (a), (b) and (c) until the first lookup table fits the memory space, and then storing the first lookup table in the memory space, and (e) using the first lookup table to provide RGB pixel data using the YUV data as addresses thereto.

公开(公告)号：CA2210014A1

公开(公告)日：1998-04-15

申请号：CA2210014

申请日：1997-07-10

Applicant: ATI TECHNOLOGIES INC

Inventor： LAKSONO INDRA ,  KITAMURA JOHN ,  THUT ANDREAS

IPC: G09G5/02 ,  H04N9/67 ,  H04N7/01 ,  G06F3/14

Abstract: A method of converting video data from a YUV format to an RGB format comprising (a) performing a matrix transformation of Y, U and V pixel data of a set of possible Y, U and V parameters into corresponding R, G and B parameters, (b) determining whether the set of R, G and B parameters forms a first lookup table whose size exceeds the size of a particular memory space, (c) in the event the lookup table is too large for the memory space, truncating least significant bits of at least the U and V parameters, (d) repeating steps (a), (b) and (c) until the first lookup table fits the memory space, and then storing the first lookup table in the memory space, and (e) using the first lookup table to provide RGB pixel data using the YUV data as addresses thereto.

公开(公告)号：CA2187862A1

公开(公告)日：1997-10-30

申请号：CA2187862

申请日：1996-10-15

Applicant: ATI TECHNOLOGIES INC

Inventor： KITAMURA JOHN ,  LAKSONO INDRA ,  HARTOG ADRIAN H

IPC: G09G5/391 ,  G09G5/393 ,  G06F3/14