Abstract: A method of distributed authorization of one or more client applications to one or more connected devices. The method comprises: receiving at a connected device, from a browser executing a client application, a client token and an access request.

Abstract: A method of distributed authorization of one or more client applications to one or more connected devices. The method comprises: receiving at a connected device, from a browser executing a client application, a client token and an access request.

Abstract: We describe a touch sensing system projecting light defining a touch sheet above a surface and a camera to capture a touch image of light scattered by a pen intersecting the touch sheet. A signal processor identifies a lateral location of the pen. The pen includes a light source to provide a light signal, and the system also includes two photodiodes to detect the signal from the pen. The touch detection is augmented by modelling the signals received at the photodiodes, dependent on the distance and angle of a pen, and using this to derive a probability of the observed received signals given the pen location determined from the touch sheet. This information can be used, for example, to allocate identities to the pens.

Abstract: Method of processing an image of the skin is disclosed. The method comprises the receipt of skin image data, the generation of simulated images with artificial transformation and the analysis of the simulated images to form a vector from extracted features.

Abstract: Method of processing an image of the skin is disclosed. The method comprises the receipt of skin image data, the generation of simulated images with artificial transformation and the analysis of the simulated images to form a vector from extracted features.

Abstract: We describe a touch sensing system projecting light defining a touch sheet above a surface and a camera to capture a touch image of light scattered by a pen intersecting the touch sheet. A signal processor identifies a lateral location of the pen. The pen includes a light source to provide a light signal, and the system also includes two photodiodes to detect the signal from the pen. The touch detection is augmented by modelling the signals received at the photodiodes, dependent on the distance and angle of a pen, and using this to derive a probability of the observed received signals given the pen location determined from the touch sheet. This information can be used, for example, to allocate identities to the pens.

Abstract: This invention relates to video transmission systems, in particular to those used to transmit video content generated and displayed on a source device to a second remote display. We describe a method of transmitting a video stream over a data link is described. Video frames are captured at a capture frame rate. The captured frames are then processed to identify duplicated frames in consecutively captured frames. Duplicated frames, duplicated as a result of capture the same source frame twice, are deleted leaving a filtered set of video frames. The remaining frames are retimed to amend a presentation time and transmitted over a data link to a rendering device.

Abstract: This invention relates to video transmission systems, in particular to those used to transmit video content generated and displayed on a source device to a second remote display. We describe a method of transmitting a video stream over a data link is described. Video frames are captured at a capture frame rate. The captured frames are then processed to identify duplicated frames in consecutively captured frames. Duplicated frames, duplicated as a result of capture the same source frame twice, are deleted leaving a filtered set of video frames. The remaining frames are retimed to amend a presentation time and transmitted over a data link to a rendering device.

Abstract: A distributed reservation protocol for medium access control in a multiband OFDM ultrawideband communications network having a band group comprising a plurality of transmission bands, a device in said network having a mode in which it uses a selected one of said bands to communicate, and a band hopping mode, and wherein the protocol comprises allowing a device in a group of devices to make a combined time-frequency reservation, said time-frequency reservation comprising a reservation of a combination of a subset of said bands in a said band group and one or more data communications timeslots in which the device is allowed to use said reserved band for data communications such that multiple said devices in said group are able simultaneously to use one or more of the same or overlapping said reserved timeslots in different reserved frequency bands of said band group.

Abstract: We describe a method, particularly useful for a ultra wideband (UWB) network, to enable a first device to determine whether a device address used by a second device is intended to identify said first device, in a network with a variable topology in which a device address may change, the method comprising: transmitting, repeatedly, a beacon to said second device updating a said device address of said first device; storing a history of device addresses used by said first device; receiving, at said first device, a signal including an address and comparing the received device address with addresses in the history back in time for a period limited by a synchronisation refresh time which comprises a maximum time for which said second device may fail to receive said beacon from said first device without considering that said first device is no longer synchronised to said network.