Abstract: According to examples there may be provided a method of implementing an enhancement decoding, comprising: obtaining a preliminary set of residuals from an encoded enhancement signal comprising one or more layers of residual data, the one or more layers of residual data being generated based on a comparison of data derived from a decoded video signal and data derived from an original input video signal; and, instructing a drawing or addressing of the preliminary set of residuals on a texture of a GPU to combine the preliminary set of residuals with a set of temporal residual values, wherein the texture acts as a temporal buffer storing the set of temporal residual values. A system, video decoder, decoder integration layer and computer readable medium are also provided.

Abstract: There may be provided a module for use in a video decoder, configured to: receive a base decoded video signal from a base decoding layer; receive one or more layers of correction data; and, combine the correction data with the base decoded video signal to modify the base decoded video signal such that, when one or more layers of positive residual data are combined with the modified base decoded video signal to generate enhanced video data, the enhanced data corresponds to a combination of the base decoded video signal with one or more layers of residual data from the enhancement decoding layer, wherein the positive residual data comprises only values greater than or equal to zero and is based on one or more layers of residual data from an enhancement decoding layer, the one or more layers of residual data being generated based on a comparison of data derived from a decoded video signal and data derived from an original input video signal.

Abstract: According to examples there may be provided a method of implementing an enhancement decoding, comprising: creating one or more source buffers to receive an encoded video stream, the encoded video stream comprising an encrypted base video signal and an enhancement video signal; in a secure execution space, creating one or more protected input buffers and one or more protected output buffers to receive decrypted data; passing the one or more source buffers and the one or more protected input buffers to a decryption module to decrypt the encrypted base video signal and store the decrypted base video signal in the one or more protected input buffers; passing the one or more protected input buffers to a base decoder to implement a base decoding layer to decode the decrypted base video signal; passing the one or more source buffers to the secure execution space for decoding the enhancement video signal using an enhancement decoder.

Abstract: A mixing apparatus 100 for mixing at least two fluids, the mixing apparatus 100 comprising a shaft 120 rotatable about its longitudinal axis 121, a first 122 and a second 124 radially extending impeller mounted on the shaft 120 and respectively axially spaced apart, characterised in that the first impeller 122 comprises a plurality of curved blades 125 operable to move said fluids in an axial direction towards the second impeller 124, and the second impeller 124 comprises a plurality of curved blades 125 operable to move said fluids in an axial direction towards the first impeller 122.

Abstract: A mixing apparatus (100) for mixing at least two fluids, the mixing apparatus (100) comprising a shaft (120) rotatable about its longitudinal axis (121), a first (122) and a second (124) radially extending impeller mounted on the shaft (120) and respectively axially spaced apart, characterised in that the first impeller (122) comprises a plurality of curved blades (125) operable to move said fluids in an axial direction towards the second impeller (124), and the second impeller (124) comprises a plurality of curved blades (125) operable to move said fluids in an axial direction towards the first impeller (122).

Abstract: A lock for a door or the like which has a casing and a deadbolt assembly which comprises a bolt and a drive mechanism in the form of a cam of a cylinder lock which is adapted to be operated by a key. The drive mechanism is arranged to drive a coupler which is guided for sliding movement in the casing between a withdrawn position in which the bolt is located substantially wholly within the casing and an extended or thrown position in which a portion of the bolt projects from the casing. A lever in the form of a link is arranged between the coupler and the bolt, the link being pivotally mounted in the casing and provided with first engagement means in the form of a pin which is engageable in a slot in the coupler and second engagement means in the form of a slot which is arranged to engage with a pin on the bolt.

Abstract: A lock for a door or the like which has a casing and a deadbolt assembly which comprises a bolt and a drive mechanism in the form of a cam of a cylinder lock which is adapted to be operated by a key. The drive mechanism is arranged to drive a coupler which is guided for sliding movement in the casing between a withdrawn position in which the bolt is located substantially wholly within the casing and an extended or thrown position in which a portion of the bolt projects from the casing. A lever in the form of a link is arranged between the coupler and the bolt, the link being pivotally mounted in the casing and provided with first engagement means in the form of a pin which is engageable in a slot in the coupler and second engagement means in the form of a slot which is arranged to engage with a pin on the bolt.

Abstract: A lock for a door or the like having a dead lock assembly which comprises a bolt (41) and a drive mechanism (53, 54) adapted to be operated by a key, wherein the drive mechanism comprises a driving link (46), arranged to be driven by a lever (54) actuated by the key and arranged in turn to drive the bolt, and means (56) for transferring the drive from the driving link (46) to the bolt (41) in such a manner that the movement or throw of the bolt is increased relative to the displacement of the driving link (46).