Abstract: Methods, systems, and use cases for one-touch inline cryptographic data security are discussed, including an edge computing device with a network communications circuitry (NCC), an enhanced DMA engine coupled to a memory device and including a cryptographic engine, and processing circuitry configured to perform a secure exchange with a second edge computing device to negotiate a shared symmetric encryption key, based on a request for data. An inline encryption command for communication to the enhanced DMA engine is generated. The inline encryption command includes a first address associated with a storage location storing the data, a second address associated with a memory location in the memory device, and the shared symmetric encryption key. The data is retrieved from the storage location using the first address, the data is encrypted using the shared symmetric encryption key, and the encrypted data is stored in the memory location using the second address.

Abstract: Motion compensated video signal processing apparatus comprises a subsampler for horizontally subsampling an input digital video signal, to generate a subsampled video signal; a motion vector processor for generating motion vectors from the subsampled video signal; and a motion compensated video processor for processing the input digital video signal according to the motion vectors, to generate an output digital video signal.

Abstract: A method of processing an input 60 field/second video signal generated by 3232 pulldown to produce an output video signal, comprises producing from the input signal a series of progressive scan format frames, each frame corresponding to a respective one of the input fields, and comparing blocks of pixels in each progressive scan frame with blocks of pixels in the following frame to derive motion vectors representing the motion of the content of respective blocks between frames. The motion vectors are utilized to monitor the field sequence of the input signal, and fields or frames of the output video signal are produced using input fields or progressive scan frames selected in dependence upon the field sequence of the input signal, at least some of the output fields or frames being produced by motion compensated temporal interpolation utilizing the motion vectors.

Abstract: A time base changer for a video converter for converting between a sequence of input video images at an input video rate and a sequence of output video images at an output video rate is operable to convert from one of a number of input video rates to an output video rate. The time base changer includes N video stores 32 where N is a integer greater than one, each for storing a video image. The video stores are enabled cyclically and at the appropriate input video rate for storing successive input video images in successive video stores. Multiplexers 36 connected to the video stores can output pairs of video images from the video stores at the output video rate. The time base changer includes a counter 38 which can be clocked at the appropriate one of the input video rates. The counter is preferably a modulo-N counter.

Abstract: Image processing apparatus is described in which a source stream of data captured by a particular source is passed through a data splitter where it is split using one splitting technique into a plurality of split streams of data. These split streams of data each contain only part of the information within the source stream of data. The split streams of data are separately manipulated by a post production unit prior to being passed through a data combiner where they are recombined to form an output stream of data. The source stream of data and the output stream of data are of a higher resolution than the individual split streams of data. The post production unit includes at least one reformatter for reformatting the data stream to use a different splitting technique matched to the manipulation being performed in the post production unit.

Abstract: A motion compensation image processing apparatus and method for generating motion vectors that represent image motion between a pair of input images from which an output image is derived by motion compensated interpolation. A plurality of motion vectors are generated for each pixel of the output image and it is determined whether respective test blocks of each of the pair of input images, pointed to by each of the plurality of motion vectors, lie partially outside their respective input images. If one or both of the test blocks lies partially outside its respective input image, the degree of correlation between the test blocks is detected by performing a first correlation test on parts of the test blocks lying inside their respective input images. However, if both of the test blocks lie wholly inside their respective input image, the degree of correlation between the test blocks is detected by performing a second correlation test.

Abstract: An input digital video signal representing a series of input frames with at least some of the input frames each having a first picture portion having a first acquisition characteristic (such as 60 Hz, 2:1) and a second picture portion having a second acquisition characteristic (such as 30 Hz, 1:1) is processed to produce an output video signal representing a series of output frames having generally the same acquisition characteristic (such as 24 Hz, 1:1). The method comprises the steps of distinguishing between the first and second picture portions in the input frames (for example by determining the difference between input fields (a.sub.1, a.sub.2 ; a.sub.3, a.sub.4 ; . . . ) of a pair, or by detecting a key signal accompanying the input video signal) and processing the first and second picture portions differently to produce the output frames.

Abstract: Pairs of temporally adjacent input images are interpolated to produce motion compensated images using motion vectors generated from said but not all of the pairs of input images from which the output images are interpolated.

Abstract: An input digital video signal is converted to an output digital video signal having a different frame rate and a different number of pixel lines per frame. A first series of progressive scan format frames is formed from the input signal. Then a second series of frames is formed from the first series of frames using motion compensated temporal interpolation between successive frames of the first series in producing at least some of the frames of the second series so as to provide the difference in frame rate. Before or after the second series of frames is formed, vertical spatial interpolation is performed so as to provide the difference in the number of pixel lines per frame.

Abstract: A digital picture signal processing apparatus has memories each capable of storing digital words representing respective pixels which, when arranged in a two-dimensional array, make up a picture. A read address generator produces a digital read address identifying the position of a set of the stored words to be read from respective different ones of the memories, the words of the set representing a set of pixels so positioned relative to one another as to constitute at least some of the pixels of a portion of the picture. The read address comprises at least one least significant bit (LSB) for each of the coordinate directions. A digital filter has a number of multipliers equal to the number of words in the set and each being connected to a data bus of a respective memory so as to receive a respective one of the set of words read therefrom, and a plurality of coefficient memories.

Abstract: An image signal processing apparatus has an address generator that generates addresses for successive words of a digital input signal representing an input image to be manipulated. A computation circuit monitors the addresses for successive word sets which each comprise first and second words relatively horizontally spaced in the input image and a third word aligned vertically with the second word, and computes from each set both horizontal and vertical local scaling factors representing the extent of compression in the horizontal and vertical directions of a corresponding local area of the manipulated image. A bandwidth controller is responsive to the successive scaling factors to vary the horizontal and vertical bandwidths of a digital filter which two-dimensionally filters the input image, thereby to minimize aliasing that would be caused by the manipulation of the local areas.

Abstract: Apparatus for processing a video signal derived by single frame animation for subsequent merging with live action material, comprises a motion vector estimator (11) for deriving motion vectors in dependence on motion in the picture sequence represented by the video signal, and an interpolator (12) and associated circuits (14 to 16) for blurring the images represented by the video signal of objects in the picture sequence so determined as being in motion in dependence on the motion vectors.

Abstract: A motion compensated video standards converter comprises a block matcher (3) for deriving a plurality of motion vectors for each pixel of each field or frame of an output standards-converted video signal, the motion vectors representing motion between successive fields or frames of an input video signal from which the output video signal is to be derived by motion compensated interpolation, a circuit (25) for testing each said motion vector by deriving the sum of absolute luminance differences of corresponding pixels in blocks of pixels in the two fields or frames of said input video signal temporarily nearest a field or frame of said output video signal, which blocks are pointed to by the motion vector under test, a circuit (26 to 28) for center-weighting said sum of absolute luminance differences if the magnitude of said motion vector under test is less than a predetermined value, and a selector (29) for selecting from said plurality of motion vectors, the motion vector which results in the minimum said sum

Abstract: Access to a two-dimensional (2-D) portion of a digital picture signal, the signal being made of a plurality of digital words representing respective pixels (P) when, when arranged in a 2-D array, make up the picture, is achieved as follows. The words are allocated into groups such that the pixels (P) represented by the words of each group make up a 2-D area (T0, T1, etc.) of the picture having a shape and size which is the same for all of the groups, the shape being such that the areas tessellate with one another to constitute at least part of the picture. Each word is stored in one of a plurality of memories (M0 to M15), the number of which is equal to the number of pixels (P) in the 2-D area (T0, T1, etc.), such that, for each pixel position in the area, the words from all of the groups representing the pixels having that pixel position in the area are stored in a respective one of the memories. Then, a set of the stored words which represent a set of pixels are read in parallel.