公开(公告)号：AT522086T

公开(公告)日：2011-09-15

申请号：AT01951502

申请日：2001-05-14

Applicant: NOKIA CORP

Inventor： HANNUKSELA MISKA ,  CAGLAR KEREM

IPC: H04N7/24 ,  H04N19/89 ,  G06T9/00 ,  H04N19/105 ,  H04N19/51 ,  H04N19/895

Abstract: A method for decoding an encoded video signal representing a sequence of pictures, the method comprising: - determining that a corresponding area of a default reference picture, for use in forming a motion compensated prediction for an area of a current picture, has been corrupted or lost; - examining an indicator provided in the encoded video signal to identify an area of an alternative reference picture that is sufficiently similar to the corresponding area of the default reference picture; and - forming a motion compensated prediction for the area of the current picture using the identified sufficiently similar area of the alternative reference picture.

公开(公告)号：AT511721T

公开(公告)日：2011-06-15

申请号：AT04769568

申请日：2004-10-06

Applicant: NOKIA CORP

Inventor： WENGER STEPHAN ,  HANNUKSELA MISKA

IPC: H04L1/00

Abstract: The invention relates to a method for assembling FEC frames for a sequence of groups of coded media packets. In order to reduce a buffer delay at a decoding end (15), it is proposed that the FEC frame is aligned with the groups of media packets. To this end, a number of next subsequent groups are determined, which fit completely into a FEC frame. All coded media packets associated to this determined group or groups, if any, are selected for the FEC frame (step 202,402). Then, the selected coded media packets are encoded to obtain at least one FEC packet for the FEC frame (step 206,406). For fixed FEC frame structures, moreover the introduction of padding packets as additional media packets, if required, is proposed.

公开(公告)号：ZA200903389B

公开(公告)日：2010-10-27

申请号：ZA200903389

申请日：2009-05-18

Applicant: NOKIA CORP

Inventor： WANG YE-KUI ,  CHEN YING ,  HANNUKSELA MISKA

IPC: H04N20060101

Abstract: An improved system and method for implementing efficient decoding of scalable video bitstreams is provided. A virtual decoded picture buffer is provided for each lower layer of the scalable video bitstream. The virtual decoded picture buffer stores decoded lower layer pictures for reference. The decoded lower layer pictures used for reference are compiled to create a reference picture list for each layer. The reference picture list generated by the virtual decoded picture buffer is used during a direct prediction process instead of a target reference list to correctly decode a current macroblock.

公开(公告)号：HK1134386A1

公开(公告)日：2010-04-23

申请号：HK10102342

申请日：2010-03-05

Applicant: NOKIA CORP

Inventor： WANG YE-KUI ,  CHEN YING ,  HANNUKSELA MISKA

IPC: H04N20060101

Abstract: An improved system and method for implementing efficient decoding of scalable video bitstreams is provided. A virtual decoded picture buffer is provided for each lower layer of the scalable video bitstream. The virtual decoded picture buffer stores decoded lower layer pictures for reference. The decoded lower layer pictures used for reference are compiled to create a reference picture list for each layer. The reference picture list generated by the virtual decoded picture buffer is used during a direct prediction process instead of a target reference list to correctly decode a current macroblock.

公开(公告)号：ZA200901936B

公开(公告)日：2010-03-31

申请号：ZA200901936

申请日：2009-03-19

Applicant: NOKIA CORP

Inventor： HANNUKSELA MISKA ,  BOUAZIZI IMED ,  WANG YE-KUI

IPC: H04N7/24

Abstract: A system and method for signaling and indicating track relationship information in media files. The present invention provides a mechanism for signaling the information of layered track groups and the information of MDC track groups, as well as a mechanism for signaling track relationship information in an efficient way. In local playback or unicast streaming applications, to select an independently decodable track for a certain media type, the information of alternate track groups is first found via the track relation box, and one track is selected from an alternate track group for the media type. If stream switching is desired, the switching track group information is found via the track relation box. In multicast applications with scalable or MDC streams, the tracks in a layered or MDC group are found via the track relation box and selected among all the layered or MDC groups.

公开(公告)号：DE60043696D1

公开(公告)日：2010-03-04

申请号：DE60043696

申请日：2000-04-26

Applicant: NOKIA CORP

Inventor： HANNUKSELA MISKA

IPC: H04L12/56 ,  H04L29/10 ,  H04N7/24 ,  H04N7/26

Abstract: A data transmission system (10) is provided for transmitting a data signal between a server (12, 14, 16, 18) and a communications terminal (20, 22) over a transmission link having a variable bandwidth. The data signal is a scalable compressed multimedia clip comprising a sequence of images. Each image has a base layer and a number of enhancement layers. To cope with variability in the bandwidth, the sequence is re-ordered so that the base layers have greater safety times than the enhancement layers. This allows all of the base layers to arrive in time to be played at the expense of the enhancement layers.

公开(公告)号：AT455433T

公开(公告)日：2010-01-15

申请号：AT00920790

申请日：2000-04-26

Applicant: NOKIA CORP

Inventor： HANNUKSELA MISKA

IPC: H04L12/56 ,  H04L29/10 ,  H04N7/24 ,  H04N7/26

Abstract: A data transmission system (10) is provided for transmitting a data signal between a server (12, 14, 16, 18) and a communications terminal (20, 22) over a transmission link having a variable bandwidth. The data signal is a scalable compressed multimedia clip comprising a sequence of images. Each image has a base layer and a number of enhancement layers. To cope with variability in the bandwidth, the sequence is re-ordered so that the base layers have greater safety times than the enhancement layers. This allows all of the base layers to arrive in time to be played at the expense of the enhancement layers.

公开(公告)号：AT438136T

公开(公告)日：2009-08-15

申请号：AT05018669

申请日：2002-02-08

Applicant: NOKIA CORP

Inventor： HANNUKSELA MISKA ,  AKSU EMRE BARIS

IPC: G06F5/06 ,  H04J3/26 ,  H04L12/861 ,  H04L13/08 ,  H04L29/06 ,  H04N7/24 ,  H04N21/44 ,  H04N21/658

Abstract: The invention discloses a method of improving the playback of streamed media on a client device by overcoming problems caused by variations in the transmission delay of packets due to network and transport protocol operation and variations in encoding/server specific delays. In an embodiment of the invention, a client device has a decoder (120) and a pre-decoder buffer (110) which receives streamed packets from source server via a packet network. The pre-decoder buffer is variable in size and has a variable initial buffering time for receiving the transmitted packets from the source server prior to decoding in the decoder. The initial buffering time and pre-decoder buffer size can be dynamically adapted for improved playback performance by the source server. In a further aspect of the invention, a post-decoder buffer operates in conjunction with the pre-encoder buffer to reduce decoding-related delay variations.

公开(公告)号：AU2008320436A1

公开(公告)日：2009-05-07

申请号：AU2008320436

申请日：2008-10-29

Applicant: NOKIA CORP

Inventor： HANNUKSELA MISKA

IPC: G06F17/30

Abstract: Systems and methods for using sample numbers to pair timed metadata samples with media or hint samples is provided. A timed metadata sample can be paired with media or hint samples since a sample number contained in the time media sample is provided relative to the appropriate media or hint track. Additionally, an offset of sample numbers, applicable to scenarios where a plurality of timed metadata samples exist, may be added to the provided sample number to obtain the actual sample number within the media or hint track.

公开(公告)号：AU2008313328A1

公开(公告)日：2009-04-23

申请号：AU2008313328

申请日：2008-10-15

Applicant: NOKIA CORP

Inventor： CHEN YING ,  HANNUKSELA MISKA ,  WANG YE-KUI

IPC: H04N7/26 ,  H04N7/50

Abstract: A system, method and computer program tangibly embodied in a memory medium for implementing motion skip and single-loop decoding for multi-view video coding. In various embodiments, a more efficient motion skip is used for the current JMVM arrangement by 8x8 or 4x4 pel disparity motion vector accuracy, while maintaining the motion compensation process that is compliant with the H.264/AVC design regarding hierarchical macroblock partitioning. Adaptive referencing merging may be used in order achieve a more accurate motion skip from one inter-view reference picture. In order to indicate whether a picture is to be used for motion skip, a new syntax element or syntax modification in the NAL unit header may be used.