Patents by Inventor Kwong-Wing Raymond Chan
Kwong-Wing Raymond Chan has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 7590751Abstract: A method and system for delivering data over a network to a large number of clients, which may be suitable for building large-scale Video-on-Demand (VOD) systems, are provided. In current VOD systems, the client may suffer from a long latency before starting to receive the requested data that is capable of providing sufficient interactive functions, or the reverse, without significantly increasing the network load. The method utilizes two groups of data streams, one responsible for minimizing latency while the other one provides the required interactive functions. In the anti-latency data group, uniform, non-uniform, or hierarchical staggered stream intervals may be used. The system may have a relatively small startup latency while users may enjoy most of the interactive functions that are typical of video recorders. The method and system may also maintain the number of data streams, and therefore, the bandwidth, required.Type: GrantFiled: October 17, 2006Date of Patent: September 15, 2009Assignee: Dinastech IPR LimitedInventors: Kwok-Wal Cheung, Kwong-Wing Raymond Chan, Gin-Man Chan, Wing-Kal Lam
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Patent number: 7574728Abstract: A method and system for delivering data over a network to a large number of clients, which may be suitable for building large-scale Video-on-Demand (VOD) systems. In current VOD systems, the client may suffer from a long latency before starting to receive requested data that is capable of providing sufficient interactive functions, or the reverse, without significantly increasing the network load. The method utilizes two groups of data streams, one responsible for minimizing latency while the other provides the required interactive functions. In the anti-latency data group, uniform, or non-uniform or hierarchical staggered stream intervals may be used. The system may have a relatively small startup latency while users may enjoy most of the interactive functions that are typical of video recorders including fast-forward, forward-jump, and so on. Furthermore, the system can maintain the number of data streams, and therefore the bandwidth, required.Type: GrantFiled: July 31, 2001Date of Patent: August 11, 2009Assignee: Dinastech IPR LimitedInventors: Kwok-Wai Cheung, Kwong-Wing Raymond Chan, Gin-Man Chan, Wing-Kai Lam
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Patent number: 7200669Abstract: A method and system for delivering data over a network to a large number of clients, which may be suitable for building large-scale Video-on-Demand (VOD) systems. In current VOD systems, the client may suffer from a long latency before starting to receive requested data that is capable of providing sufficient interactive functions, or the reverse, without significantly increasing the network load. The method utilizes two groups of data streams, one responsible for minimizing latency while the other provides the required interactive functions. In the anti-latency data group, uniform, or non-uniform or hierarchical staggered stream intervals may be used. The system may have a relatively small startup latency while users may enjoy most of the interactive functions that are typical of video recorders including fast-forward, forward-jump, and so on. Furthermore, the system can maintain the number of data streams, and therefore the bandwidth, required.Type: GrantFiled: September 18, 2001Date of Patent: April 3, 2007Assignee: Dinastech IPR LimitedInventors: Kwok-Wai Cheung, Kwong-Wing Raymond Chan, Gin-Man Chan, Wing-Kai Lam
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Patent number: 7174384Abstract: A method and system for delivering data over a network to a large number of clients, which may be suitable for building large-scale Video-on-Demand (VOD) systems. In current VOD systems, the client may suffer from a long latency before starting to receive requested data that is capable of providing sufficient interactive functions, or the reverse, without significantly increasing the network load. The method utilizes two groups of data streams, one responsible for minimizing latency while the other provides the required interactive functions. In the anti-latency data group, uniform, or non-uniform or hierarchical staggered stream intervals may be used. The system may have a relatively small startup latency while users may enjoy most of the interactive functions that are typical of video recorders including fast-forward, forward-jump, and so on. Furthermore, the system can maintain the number of data streams, and therefore the bandwidth, required.Type: GrantFiled: July 31, 2001Date of Patent: February 6, 2007Assignee: Dinastech IPR LimitedInventors: Kwok-Wai Cheung, Kwong-Wing Raymond Chan, Gin-Man Chan, Wing-Kai Lam
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Publication number: 20030131126Abstract: This invention describes a new method and system for delivering data over a network to a large number of clients, which may be suitable for building large-scale Video-on-Demand (VOD) systems. In current VOD systems, the client may suffer from a long latency before starting to receive the requested data that is capable of providing sufficient interactive functions, or the reverse, without significantly increasing the network load. The method utilizes two groups of data streams, one responsible for minimizing latency while the other one provides the required interactive functions. In the anti-latency data group, uniform, or non-uniform or hierarchical staggered stream intervals may be used. The system being realized based on this invention may have a relatively small startup latency while users may enjoy most of the interactive functions that are typical of video recorders including fast-forward, forward-jump, and so on.Type: ApplicationFiled: July 31, 2001Publication date: July 10, 2003Inventors: Kwok-Wai Cheung, Kwong-Wing Raymond Chan, Gin-Man Chan, Wing-Kai Lam
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Publication number: 20030093543Abstract: This invention describes a new method and system for delivering data over a network to a large number of clients, which may be suitable for building large-scale Video-on-Demand (VOD) systems. In current VOD systems, the client may suffer from a long latency before starting to receive the requested data that is capable of providing sufficient interactive functions, or the reverse, without significantly increasing the network load. The method utilizes two groups of data streams, one responsible for minimizing latency while the other one provides the required interactive functions. In the anti-latency data group, uniform, or non-uniform or hierarchical staggered stream intervals may be used. The system being realized based on this invention may have a relatively small startup latency while users may enjoy most of the interactive functions that are typical of video recorders including fast-forward, forward-jump, and so on.Type: ApplicationFiled: September 18, 2001Publication date: May 15, 2003Inventors: Kwok-Wai Cheung, Kwong-Wing Raymond Chan, Gin-Man Chan, Wing-Kai Lam
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Publication number: 20030074667Abstract: This invention describes a new method and system for delivering data over a network to a large number of clients, which may be suitable for building large-scale Video-on-Demand (VOD) systems. In current VOD systems, the client may suffer from a long latency before starting to receive the requested data that is capable of providing sufficient interactive functions, or the reverse, without significantly increasing the network load. The method utilizes two groups of data streams, one responsible for minimizing latency while the other one provides the required interactive functions. In the anti-latency data group, uniform, or non-uniform or hierarchical staggered stream intervals may be used. The system being realized based on this invention may have a relatively small startup latency while users may enjoy most of the interactive functions that are typical of video recorders including fast-forward, forward-jump, and so on.Type: ApplicationFiled: July 31, 2001Publication date: April 17, 2003Inventors: Kwok-Wai Cheung, Kwong-Wing Raymond Chan, Gin-Man Chan, Wing-Kai Lam
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Publication number: 20020114331Abstract: In a large-scale video-on-demand (VOD) system, the scalability and the provision of truly interactive functions are two difficult problems which have not been resolved satisfactorily. It is easy to provide fully interactive functions using unicast streams but these systems are limited in their scalability which affect the cost of service provisioning. Batching systems based on multicast streaming, on the other hand, can increase the scalability but it is difficult to provide interactive functions on these systems. This invention provides a media delivery system having a novel architecture aiming at serving millions of users in a metropolitan area. It features hybrid multicast-unicast streaming to achieve both scalability and full interactivity through the provision of distributed interactive servers, which cached the multicast media streams generated by the media servers. The interactive servers may also provide fault tolerant routing and error recovery.Type: ApplicationFiled: November 27, 2001Publication date: August 22, 2002Inventors: Kwok Wai Cheung, Kwong Wing Raymond Chan, Kwun Chung Chan, Cheuk Yin Tam, Chun Hay Chan, Chi Ho Ng
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Publication number: 20020114330Abstract: In a large-scale video-on-demand (VOD) system, the scalability and the provision of truly interactive functions are two difficult problems which have not been resolved satisfactorily. It is easy to provide fully interactive functions using unicast streams but these systems are limited in their scalability which affect the cost of service provisioning. Batching systems based on multicast streaming, on the other hand, can increase the scalability but it is difficult to provide interactive functions on these systems. This invention provides a media delivery system having a novel architecture aiming at serving millions of users in a metropolitan area. It features hybrid multicast-unicast streaming to achieve both scalability and full interactivity through the provision of distributed interactive servers, which cached the multicast media streams generated by the media servers. The interactive servers may also provide fault tolerant routing and error recovery.Type: ApplicationFiled: November 27, 2001Publication date: August 22, 2002Inventors: Kwok Wai Cheung, Kwong Wing Raymond Chan, Kwun Chung Chan, Cheuk Yin Tam, Chun Hay Chan, Chi Ho Ng