Patents by Inventor Kwok-Wai Cheung
Kwok-Wai Cheung 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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Publication number: 20120114036Abstract: The present invention relates to method and apparatus for multiview video coding. In particular, the present invention describes a disparity compensated prediction to exploit the inter-view correlation in multiview video coding by providing stretching, compression, and shearing (SCSH) disparity compensation to approximate the actual disparity effects in addition to the translational disparity. A sub-sampled block-matching disparity estimation technique is provided to implement the SCSH disparity compensation which makes use of the interpolated reference frames for subpixel motion and disparity estimation in conventional hybrid video coding structure.Type: ApplicationFiled: November 10, 2010Publication date: May 10, 2012Applicant: Hong Kong Applied Science and Technology Research Institute Company LimitedInventors: LAI MAN PO, Ka Man WONG, Kwok Wai CHEUNG, Ka Ho NG, Yu LIU
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Patent number: 8170110Abstract: In accordance with an example embodiment of the present invention, the present invention provides method and apparatus for motion compensated prediction. Apart from translational motion, zoom motion is taken into account by sampling an interpolated frame with one or more selected sampling rates to generate one or more zoom reference frames; matching a frame with the zoom reference frames; and determining one or more motion data.Type: GrantFiled: October 16, 2009Date of Patent: May 1, 2012Assignee: Hong Kong Applied Science and Technology Research Institute Company LimitedInventors: Lai-Man Po, Ka Man Wong, Kwok Wai Cheung, Ka Ho Ng, Yu Liu
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Publication number: 20110103614Abstract: Methods and systems to produce audio output signals from audio input signals. In one embodiment, a first portion of the audio input signals can be pre-processed, with the output used to modulate ultrasonic carrier signals, thereby producing modulated ultrasonic signals. The modulated ultrasonic signals can be transformed into a first portion of the audio output signals, which is directional. Based on a second portion of the audio input signals, a standard audio speaker can output a second portion of the audio output signals. Another embodiment further produces distortion compensated signals based on the pre-processed signals. The distortion compensated signals can be subtracted from the second portion of the audio input signals to generate inputs for the standard audio speaker to output the second portion of the audio output signals. In yet another embodiment, noise can be added during pre-processing of the first portion of the audio input signals.Type: ApplicationFiled: January 4, 2011Publication date: May 5, 2011Inventors: Kwok Wai Cheung, Peter P. Tong, C. Douglass Thomas
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Publication number: 20110090963Abstract: In accordance with an example embodiment of the present invention, the present invention provides method and apparatus for motion compensated prediction. Apart from translational motion, zoom motion is taken into account by sampling an interpolated frame with one or more selected sampling rates to generate one or more zoom reference frames; matching a frame with the zoom reference frames; and determining one or more motion data.Type: ApplicationFiled: October 16, 2009Publication date: April 21, 2011Applicant: HONG KONG APPLIED SCIENCE AND TECHNOLOGY RESEARCH INSTITUTE COMPANY LIMITEDInventors: Lai-Man PO, Ka Man WONG, Kwok Wai CHEUNG, Ka Ho NG, Yu LIU
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Patent number: 7801570Abstract: A directional speaker for an electronic device having audio output capabilities is disclosed. The directional speaker can thus be used with the electronic device to direct audio output in a directionally constrained manner. As a result, a certain degree of privacy with respect to the audio output is achieved for the user of the electronic device, yet the user need not wear a headset or ear phone, or have to hold a speaker against one's ear. The directional speaker can be integral with the electronic device. Alternatively, the directional speaker can be an attachment (or peripheral) to the electronic device.Type: GrantFiled: April 15, 2004Date of Patent: September 21, 2010Assignee: IpVenture, Inc.Inventors: Kwok Wai Cheung, Peter P. Tong, C. Douglass Thomas
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Publication number: 20100205272Abstract: A computer-implemented system and method to manage the communication of a user are disclosed. In one embodiment, when a person tries to electronically convey a message to the user, the status of the user, the identity of the person, and the urgency of the message can be identified. The access priority of the person can be determined based on the person's identity. Then, the message can be managed using one or more rules and in view of the status of the user, the access priority of the person and the urgency of the message.Type: ApplicationFiled: April 14, 2010Publication date: August 12, 2010Inventors: Kwok Wai Cheung, Peter P. Tong, C. Douglass Thomas
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Patent number: 7729688Abstract: A computer-implemented system and method to manage the communication of a user are disclosed. In one embodiment, when a person tries to electronically convey a message to the user, the status of the user, the identity of the person, and the urgency of the message can be identified. The access priority of the person can be determined based on the person's identity. Then, the message can be managed using one or more rules and in view of the status of the user, the access priority of the person and the urgency of the message.Type: GrantFiled: June 12, 2006Date of Patent: June 1, 2010Assignee: IpVenture, Inc.Inventors: Kwok Wai Cheung, Peter P. Tong, C. Douglass Thomas
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Publication number: 20090298430Abstract: A wireless communication system based on a directional speaker is disclosed. The system can include an interface unit and a base unit. The audio signals from the speaker can be generated by transforming ultrasonic signals in air. This allows the production of directional audio signals even when the aperture of the speaker has dimensions in the order of a few centimeters. The audio signals from the speaker can be heard hands-free. Further, privacy protection is enhanced. In one embodiment, the interface unit can be attached or integrated to a piece of clothing at the shoulder of the user, with the audio signals from the speaker directed towards one of the user's ears. The wireless communication system can be applied to a number of different areas, including a communication device, such as a cell phone; a hearing aid; an entertainment system; and a computation system, such as a personal digital assistant or a computer.Type: ApplicationFiled: August 6, 2009Publication date: December 3, 2009Inventors: Kwok Wai Cheung, Peter P. Tong, C. Douglass Thomas
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Patent number: 7587227Abstract: A wireless communication system based on a directional speaker is disclosed. The system can include an interface unit and a base unit. The audio signals from the speaker can be generated by transforming ultrasonic signals in air. This allows the production of directional audio signals even when the aperture of the speaker has dimensions in the order of a few centimeters. The audio signals from the speaker can be heard hands-free. Further, privacy protection is enhanced. In one embodiment, the interface unit can be attached or integrated to a piece of clothing at the shoulder of the user, with the audio signals from the speaker directed towards one of the user's ears. The wireless communication system can be applied to a number of different areas, including a communication device, such as a cell phone; a hearing aid; an entertainment system; and a computation system, such as a personal digital assistant or a computer.Type: GrantFiled: August 16, 2007Date of Patent: September 8, 2009Assignee: IpVenture, Inc.Inventors: Kwok Wai Cheung, Peter P. Tong, C. Douglass Thomas
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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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Publication number: 20090065642Abstract: A seating arrangement with improved seating comfort is disclosed. In one embodiment, the seating arrangement is for a transportation vehicle. The arrangement includes seats at least having two levels adjacent to single-level seats. The multi-level seats include at least a bottom row of seats and a top row of seats. In one embodiment, the bottom row seats are on a floor; and there is an imaginary horizontal plane that is parallel to the floor, and that at least a part of the top row seats and at least a part of the bottom row seats intersect. The single-level seats include at least two rows, with at least one seat in each row being adjacent to the aisle, to allow passengers to access the single-level seats. In another embodiment, a seating arrangement includes only multi-level seats. In yet another embodiment, a computer-implemented method is applicable to the seats, such as allowing the display of a visual representation of a top-row seat and a bottom-row seat.Type: ApplicationFiled: September 27, 2008Publication date: March 12, 2009Inventors: Kwok Wai Cheung, Peter P. Tong, C. Douglass Thomas
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Publication number: 20080279410Abstract: A hearing enhancement system that enhances a user's hearing based on a directional speaker is disclosed. In one embodiment, the system can include an interface unit that has a directional speaker and a microphone. The microphone captures input audio signals that are transformed into ultrasonic signals. The speaker transmits the ultrasonic signals, which are transformed into output audio signals by interaction with air. At least a portion of the output audio signals are modified to enhance the hearing of the user. Based on the system, the user's ear remains free from any inserted objects and thus is free from annoying occlusion effects. Compared to existing hearing aids, the system is relatively inexpensive. In another embodiment, the system can also be used as a phone. In yet another embodiment, the system can also access audio signals from other portable or non-portable instruments, wired or wirelessly, such as from home entertainment units, phones, microphones at a conference or speakers at a movie theater.Type: ApplicationFiled: June 6, 2008Publication date: November 13, 2008Inventors: Kwok Wai Cheung, Peter P. Tong, C. Douglass Thomas
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Patent number: 7448575Abstract: A seating arrangement with improved seating comfort. In one embodiment, the seating arrangement is for a transportation vehicle. The arrangement includes seats at least having two levels adjacent to single-level seats. The multi-level seats include at least a bottom row of seats and a top row of seats. In one embodiment, the bottom row seats are on a floor; and there is an imaginary horizontal plane that is parallel to the floor, and that at least a part of the top row seats and at least a part of the bottom row seats intersect. The single-level seats include at least two rows, with at least one seat in each row being adjacent to the aisle, to allow passengers to access the single-level seats. In another embodiment, a seating arrangement includes only multi-level seats. In yet another embodiment, a computer-implemented method is applicable to the seats, such as allowing the display of a visual representation of a top-row seat and a bottom-row seat.Type: GrantFiled: February 28, 2006Date of Patent: November 11, 2008Assignee: Ip Venture, Inc.Inventors: Kwok Wai Cheung, Peter P. Tong, C. Douglass Thomas
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Patent number: 7388962Abstract: A hearing enhancement system that enhances a user's hearing based on a directional speaker is disclosed. In one embodiment, the system can include an interface unit that has a directional speaker and a microphone. The microphone captures input audio signals that are transformed into ultrasonic signals. The speaker transmits the ultrasonic signals, which are transformed into output audio signals by interaction with air. At least a portion of the output audio signals are modified to enhance the hearing of the user. Based on the system, the user's ear remains free from any inserted objects and thus is free from annoying occlusion effects. Compared to existing hearing aids, the system is relatively inexpensive. In another embodiment, the system can also be used as a phone. In yet another embodiment, the system can also access audio signals from other portable or non-portable instruments, wired or wirelessly, such as from home entertainment units, phones, microphones at a conference or speakers at a movie theater.Type: GrantFiled: April 15, 2004Date of Patent: June 17, 2008Assignee: IpVenture, Inc.Inventors: Kwok Wai Cheung, Peter P. Tong, C. Douglass Thomas
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Patent number: 7269452Abstract: A wireless communication system based on a directional speaker is disclosed. The system can include an interface unit and a base unit. The audio signals from the speaker can be generated by transforming ultrasonic signals in air. This allows the production of directional audio signals even when the aperture of the speaker has dimensions in the order of a few centimeters. The audio signals from the speaker can be heard hands-free. Further, privacy protection is enhanced. In one embodiment, the interface unit can be attached or integrated to a piece of clothing at the shoulder of the user, with the audio signals from the speaker directed towards one of the user's ears. The wireless communication system can be applied to a number of different areas, including a communication device, such as a cell phone; a hearing aid; an entertainment system; and a computation system, such as a personal digital assistant or a computer.Type: GrantFiled: April 15, 2004Date of Patent: September 11, 2007Assignee: IpVenture, Inc.Inventors: Kwok Wai Cheung, Peter P. Tong, C. Douglass Thomas
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Publication number: 20070174480Abstract: 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: March 27, 2007Publication date: July 26, 2007Inventors: Kwok-Wai Cheung, Kwong-Wing 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: 20040208324Abstract: A directional audio apparatus that provides directional delivery of audio output is disclosed. The audio output is targeted to those one or more persons desirous of hearing the audio output. Consequently, other persons not desirous of hearing the audio output do not receive substantial amounts of the audio output and thus are less disturbed by the unwanted audio sounds. In one embodiment, the directional audio apparatus includes a directional speaker, whose audio output is generated through ultrasonic signals. The directional speaker includes a number of speaker elements. A number of the attributes of the audio output can be controlled, either by a user or by monitored measurements. Such attributes include the beam width, the beam direction, the degree of isolation or privacy, and the volume of the audio outputs. The audio output can also be personalized or modified according to the audio conditions of the surroundings of the apparatus.Type: ApplicationFiled: April 15, 2004Publication date: October 21, 2004Inventors: Kwok Wai Cheung, Peter P. Tong, C. Douglass Thomas
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Publication number: 20040208325Abstract: Techniques for providing wireless delivery of audio sounds from audio systems to personal audio devices are disclosed. These techniques can permit users of the personal audio device to be mobile yet still acquire the audio sounds. These techniques can also optionally provide customization (or personalization) of the audio sounds to the user's hearing and/or modification of the audio sounds in view of environmental conditions. According to one aspect of the invention, audio output from an audio system or a personal audio device can be delivered in a directionally constrained manner. According to another aspect of the invention, a wireless adapter can serve as an after market modification to an audio system.Type: ApplicationFiled: April 15, 2004Publication date: October 21, 2004Inventors: Kwok Wai Cheung, Peter P. Tong, C. Douglass Thomas