公开(公告)号：HK1166429A1

公开(公告)日：2012-10-26

申请号：HK12106697

申请日：2012-07-10

Applicant: QUALCOMM INC

Inventor： GOVINDASWAMY SENTHIL ,  THYAGARAJAN KADAYAM ,  LEVIN JEFFREY A

IPC: H03M7/30 ,  H04N7/26 ,  H04N7/30

公开(公告)号：BR0210946A

公开(公告)日：2006-10-24

申请号：BR0210946

申请日：2002-07-02

Applicant: QUALCOMM INC

Inventor： BEN-ZUR LIAT ,  MUSFELDT CURTIS D ,  WINGERT CHRISTOPHER ,  POMES PAUL ,  HOSE JESSE ,  IRVINE ANN C ,  GOVINDASWAMY SENTHIL

IPC: H04L9/08 ,  H04L9/10 ,  H04N7/16 ,  H04N7/167 ,  H04N21/414

Abstract: An apparatus for installing a decryption key is initially arranged so that a decryption algorithm received by a control processor is passed via a first interface path to a decryption processor. The algorithm is installed in the decryption processor together with a program decryption key. The apparatus is subsequently arranged so that encrypted working decryption keys received by the control processor are passed on to the decryption processor over the first interface path. The decryption processor decrypts the encrypted keys using the program decryption key. Decryption keys are thus obtained and are transferred via a second interface path to decryptors for use in decrypting encrypted program signals input to the decryptors.

公开(公告)号：CA2481902A1

公开(公告)日：2003-10-23

申请号：CA2481902

申请日：2003-04-09

Applicant: QUALCOMM INC

Inventor： RATZEL JOHN ,  IRVINE ANN C ,  GOVINDASWAMY SENTHIL

IPC: G06T9/00 ,  H04N19/89 ,  H04N7/12

Abstract: An apparatus and method for the detection of errors in compressed digital image is disclosed (Fig.2). In one embodiment, a signature is generated usin g a multiple input shift register and added to the compressed information (210 ). The signature is verified at the decoder to detect an error in the compresse d information. Other information such as the frame number and/or color compone nt type of the compressed image can also be verified to detect errors in the compressed information. In other embodiments, the decoder detects errors if there are bits remaining after decompression and/or if there are invalid cod es at decompression (215). Once an error is detected, the compressed informatio n can be discarded or re-sent and processed. Therefore, the detection of error s can significantly enhance at least the reliance of systems such as digital cinema that require compression of large amounts of data.

公开(公告)号：CA2450733C

公开(公告)日：2012-12-11

申请号：CA2450733

申请日：2002-06-13

Applicant: QUALCOMM INC

Inventor： GOVINDASWAMY SENTHIL ,  THYAGARAJAN KADAYAM ,  LEVIN JEFFREY A

IPC: H04N7/26 ,  H03M7/30 ,  H04N7/30

Abstract: An apparatus and method of serializing frequency based image data in a digital cinema system is described. At least one group of data that may be represented as a 16X16 block of data is compiled. Alternatively, a frame of data is compiled. The group of data is divided into four groups, each which may be represented as an 8X8 blocks. Each of the four 8X8 blocks of data are serialized using zig-zag scanning vertical scanning, and/or horizontal scanning.

公开(公告)号：AU2003221862C1

公开(公告)日：2009-06-11

申请号：AU2003221862

申请日：2003-04-09

Applicant: QUALCOMM INC

Inventor： RATZEL JOHN ,  IRVINE ANN C ,  GOVINDASWAMY SENTHIL

IPC: G06T9/00 ,  H04N19/89

Abstract: An apparatus and method for the detection of errors in compressed digital image is disclosed. In one embodiment, a signature is generated using a multiple input shift register and added to the compressed information. The signature is verified at the decoder to detect an error in the compressed information. Other information such as the frame number and/or color component type of the compressed image can also be verified to detect errors in the compressed information. In other embodiments, the decoder detects errors if there are bits remaining after decompression and/or if there are invalid codes at decompression. Once an error is detected, the compressed information can be discarded or re-sent and processed. Therefore, the detection of errors can significantly enhance at least the reliance of systems such as digital cinema that require compression of large amounts of data.

公开(公告)号：AU2003221862B2

公开(公告)日：2008-11-06

申请号：AU2003221862

申请日：2003-04-09

Applicant: QUALCOMM INC

Inventor： RATZEL JOHN ,  IRVINE ANN C ,  GOVINDASWAMY SENTHIL

IPC: G06T9/00 ,  H04N19/89

Abstract: An apparatus and method for the detection of errors in compressed digital image is disclosed. In one embodiment, a signature is generated using a multiple input shift register and added to the compressed information. The signature is verified at the decoder to detect an error in the compressed information. Other information such as the frame number and/or color component type of the compressed image can also be verified to detect errors in the compressed information. In other embodiments, the decoder detects errors if there are bits remaining after decompression and/or if there are invalid codes at decompression. Once an error is detected, the compressed information can be discarded or re-sent and processed. Therefore, the detection of errors can significantly enhance at least the reliance of systems such as digital cinema that require compression of large amounts of data.

公开(公告)号：AU2002315160B2

公开(公告)日：2007-11-15

申请号：AU2002315160

申请日：2002-06-13

Applicant: QUALCOMM INC

Inventor： LEVIN JEFFREY A ,  THYAGARAJAN KADAYAM ,  GOVINDASWAMY SENTHIL

IPC: H04N7/26 ,  H03M7/30 ,  H04N7/30

Abstract: An apparatus and method of serializing frequency based image data in a digital cinema system is described. At least one group of data that may be represented as a 16X16 block of data is compiled. Alternatively, a frame of data is compiled. The group of data is divided into four groups, each which may be represented as an 8X8 blocks. Each of the four 8X8 blocks of data are serialized using zig-zag scanning vertical scanning, and/or horizontal scanning.

公开(公告)号：BR0210418A

公开(公告)日：2006-11-14

申请号：BR0210418

申请日：2002-06-13

Applicant: QUALCOMM INC

Inventor： GOVINDASWAMY SENTHIL ,  THYAGARAJAN KADAYAM ,  LEVIN JEFFREY A

IPC: H03M7/30 ,  H04N7/26 ,  H04N7/30

Abstract: An apparatus and method of serializing frequency based image data in a digital cinema system is described. At least one group of data that may be represented as a 16X16 block of data is compiled. Alternatively, a frame of data is compiled. The group of data is divided into four groups, each which may be represented as an 8X8 blocks. Each of the four 8X8 blocks of data are serialized using zig-zag scanning vertical scanning, and/or horizontal scanning.

公开(公告)号：HK1079317A1

公开(公告)日：2006-03-31

申请号：HK05111115

申请日：2005-12-06

Applicant: QUALCOMM INC

Inventor： GOVINDASWAMY SENTHIL ,  LEVIN JEFFEY ,  LAROCCA JUDITH

IPC: G06T20060101 ,  H04N19/124 ,  G06T9/00

Abstract: Apparatus, systems and methods for using the selection of an appropriate parameter at decompression are disclosed. In particular, when adaptive block size discrete cosine transform compression is used to compress data, different combinations of sub-blocks can be generated. To decompress the different combinations of sub-blocks, the appropriate parameter is selected based on block size assignment information and the address of data in the data block.

公开(公告)号：AU7812001A

公开(公告)日：2002-02-18

申请号：AU7812001

申请日：2001-08-01

Applicant: QUALCOMM INC

Inventor： GOVINDASWAMY SENTHIL ,  IRVINE A CHRIS ,  LEVIN JEFF

IPC: H03M7/40 ,  H03M7/42 ,  H04N7/30

Abstract: An apparatus and method for minimizing the code length of an input address for at least one for variable length encoded data is claimed. A block of variable length encoded data is read. The block of variable length encoded data is then converted into sub-optimall encoded data. The variable length encoded data is defined in having a prefix portion and a suffix portion. The prefix portion of the variable length encoded data is used to signify the look-up table. The suffix portion of the variable length encoded data is used as an input address for the look-up table.