Abstract: The present disclosure relates to a duty cycle adjusting circuit of a lighting system and method thereof for sensing light of a first color and a second color emitted by a light emitting device of the first color and a light emitting device of the second color to generate corresponding intensity values. Then a first pulse width correcting value and a second pulse width correcting value can be calculated for adjusting a first duty cycle and a second duty cycle of a driving current to adjust the illuminating intensity of the light emitting devices of the first and the second colors. Through these adjusting steps, the light of the first and the second colors is within a predetermined range of color temperature. Therefore, light source for stable light in color temperature is provided.

Abstract: A height-adjustable apparatus, including a chassis, an actuation unit, an adjustment unit, and an elastic unit, is disclosed. The chassis has a positioning unit and an opening. The actuation unit, movably disposed on the chassis, had a first hole and a first engagement part. The first hole accommodates the positioning unit. The adjustment unit passes through the opening and is movably disposed on the chassis. The adjustment unit has a plurality of second engagement parts. The elastic unit is disposed in the first hole and between the positioning unit and the actuation unit. When the actuation unit is actuated, the first engagement part disengages with the second engagement part to allow movement of adjustment unit. When the actuation unit is non-actuated, the elastic unit forces the first engagement part to engage with a selected second engagement part to lock the adjustment unit.

Abstract: A graphical user interface has a display surface that is segmented into multiple regions. A set of unique, non-overlapping locations is associated with each region. A set of actions that can be performed by the graphical user interface is defined. A document to be displayed on the display surface is selected. The document is moved to a particular location, and a particular action of the set of actions is performed on the selected object according to the particular location of the object on the display surface to operate the graphical user interface in one of a plurality of modes for the particular action.

Abstract: A method selects multiple paths between a server and a client in an overlay network where nodes are connected by links. The nodes include the server and the client. Each path includes a set of selected links. First, in each node, Quality of service metrics are measured of each link directly connecting the node to an immediate neighboring node. The metrics are transmitted to the server. In the server, a link correlation matrix based on the metrics and a path correlation matrix based on the link correlation matrix are determined. Then, the multiple paths are selected based only on the metrics, the link correlation matrix, and the path correlation matrix.

Abstract: The invention provides a novel method for interacting with content objects stored in computer devices connected as nodes of a communications network, each node including an input interface and an output interface, the output interface including a display area. A first display area of a first node is partitioned into a first private work area and a first personal work area associated with the first node. A second display area of a second node is partitioned into a set of second personal work areas and a public work area, each second personal work area associated with other nodes and the public work area associated with all of the nodes. A particular content object of the first node in the first private work area is visualized as a content item according to attributes enabled by the visualizing and moved from the first private work area to the first personal work area.

Abstract: A method allocates resources of a wireless communications network to traffic transmitted to user equipment over a channel of the network. A packet of the traffic to be stored in a selected queue is received. A maximum delay of the selected queue is determined, along with a start time, a finish time, and a queuing order. The packet is inserted in the selected queue according to the start time, the finish time and the queuing order, and then a weight of the selected queue is updated. Then, a next packet to be dequeued from the selected queue is scheduled, and the next packet is transmitted to the user equipment over the channel.

Abstract: A multi-user collaborative graphical user interface has a display area with a horizontal orientation, the display surface is positioned between the multiple users. The display area also has a centroid and a circumference. The display area is partitioned into work areas so that there is one working area for each user of the multiple users. An item is displayed in a particular working area using a global polar coordinate system centered on the centroid.

Abstract: A direct touch-sensitive input device includes a display surface configured to display images on a front of the display surface, and a direct touch-sensitive surface mounted on a back of the display surface. The display surface and the direct touch-sensitive surface are geometrically coincident. The device can also include a touch-sensitive surface mounted on the front of the device.

Abstract: The invention provides a method and system for adapting a single-user, single-client application for multiple clients operated by multiple users. An instance of an unmodified single-client, single-user application is executed in each of the clients, and the execution of the multiple instances of the application is coordinated by a wrapper application executing in each of the clients. The wrapper application is configured to communicate messages between the clients via a network to facilitate the coordination.

Abstract: A graphical user interface has a display surface that is segmented into multiple regions. A set of unique, non-overlapping locations is associated with each region. A set of actions that can be performed by the graphical user interface is defined. A document to be displayed on the display surface is selected. The document is moved to a particular location, and a particular action of the set of actions is performed on the selected object according to the particular location of the object on the display surface to operate the graphical user interface in one of a plurality of modes for the particular action.

Abstract: Graphical objects, such as documents and pop-up items, are projected onto a display surface of a touch-sensitive graphical user interface. The pop-up items associated with a particular document are displayed at a distance from the document. The distance is sufficient to prevent occlusion of the associated document when any of the pop-up items are touched. The pop-up items are connected visually with the particular document by transparent, that is, alpha-blended, colored triangles, so that the pop-up items appear to hover above the display surface.

Abstract: A height-adjustable apparatus, including a chassis, an actuation unit, an adjustment unit, and an elastic unit, is disclosed. The chassis has a positioning unit and an opening. The actuation unit, movably disposed on the chassis, had a first hole and a first engagement part. The first hole accommodates the positioning unit. The adjustment unit passes through the opening and is movably disposed on the chassis. The adjustment unit has a plurality of second engagement parts. The elastic unit is disposed in the first hole and between the positioning unit and the actuation unit. When the actuation unit is actuated, the first engagement part disengages with the second engagement part to allow movement of adjustment unit. When the actuation unit is non-actuated, the elastic unit forces the first engagement part to engage with a selected second engagement part to lock the adjustment unit.

Abstract: A method edits an object having a current state. A first level of an input device is activated to indicate an intent to edit the object, and the current state is stored in response to activating the first level. The object is edited to a next state. The next state is rejected by deactivating the first level, and restoring the current state. The next state is accepted by activating the second level of the input device, and replacing the current state with the next state.

Abstract: A method schedules packets in a router of a packet-switched network. The network has a set of service classes including a premium service, an assured service, and a best-effort service. The router includes one queue for each service class. Each queue stores packets to be transmitted according to the associated service class. The method measures an exponential weighted moving average queue length of the queue associated with the premium service each time a packet is stored in that queue. Bandwidth is increased if the average increases over a minimum threshold. The bandwidth remains below an upper limit once the average reaches a maximum threshold.

Abstract: A method transports a video over a network that includes multiple paths. First, a video is encoded into a base layer, one or more low bit-rate enhancement layers, and one or more high bit-rate enhancement layers using fine-granularity scalability. The base layer and the low bit-rate layers are duplicated into a multiple base layers and multiple low bit-rate enhancement layers, respectively. The high bit-rate layers are partitioned into multiple partial low-bit rate layers, and then each layer is transmitted over a different path of the network to a receiver.

Abstract: A graphic multi-user interface resolves multi-user conflicts. The interface includes a touch sensitive surface on which items, such as documents and images, can be displayed. The items have an associated state and policy. Touch samples are generated when users touch the touch sensitive surface. Each samples is identified with a particular user generating the of sample. The samples are associated with particular items. Touching items generates events. A decision with respect to a conflict affecting a next state of a particular item is made according to the events, the state and the policy.

Abstract: A multi-user collaborative circular graphical user interface for displaying items includes a transformation engine responsive to external command, such as mouse clicks, for generating polar coordinates for the items, an asynchronous rendering engine for generating images of the items according to the polar coordinates, and a thread switching engine for controlling the rendering engine.

Abstract: A method selects multiple paths between a server and a client in an overlay network where nodes are connected by links. The nodes include the server and the client. Each path includes a set of selected links. First, in each node, Quality of service metrics are measured of each link directly connecting the node to an immediate neighboring node. The metrics are transmitted to the server. In the server, a link correlation matrix based on the metrics and a path correlation matrix based on the link correlation matrix are determined. Then, the multiple paths are selected based only on the metrics, the link correlation matrix, and the path correlation matrix.

Abstract: A media access control protocol for a network including sensor nodes connected to each by a single shared wireless communications channel executes the following protocol in each node so that network access is managed in a distributed manner. The node monitors the channel for a period of time equal to at least a length of a frame. A frame length is predetermined and depends on network conditions. The frame is partitioned into time slots. A particular time slot is marked as occupied if the channel has a carrier signal during the time slot and otherwise the time slot is marked as available. The node only transmits a packet during available time slots. The frame structure is updated on a periodic basis if a configuration of the network changes over time.