Abstract: A method can include receiving an input image, performing an edge-preservation enhancement on the input image, performing a local-extrema enhancement on the input image, and performing a digital transient improvement (DTi) operation on the input image. A gradient-based fusion of an output of the edge-preserving enhancement and an output of the local-extrema enhancement may be performed, and a transient-based fusion of an output of the gradient-based fusion and an output of the DTi operation may also be performed.

Abstract: A method can include receiving an input signal that includes an input image having an original edge, applying multiple one-dimensional (1D) Digital Transient Improvement (DTi) algorithms to the input image, summing each result of the application of each of the 1D DTi algorithms to the input image, and providing an output signal that includes an output image having an enhanced edge that results from the applying and summing and corresponds to the original edge.

Abstract: A method of performing motion compensation includes dividing at least one frame of image data into blocks, performing phase plane correlation to determine a correlation surface for each block between a first frame and a second frame, using the correlation surfaces for each block in the first frame to produce a global correlation surface for a first frame, using the global correlation surface to produce a refined correlation surface, selecting peaks in the refined correlation surface, and perform sub-pixel motion vector calculations to produce global motion vectors using the peaks.

Abstract: A method of performing motion compensation includes dividing a current frame of video data into blocks, and clustering the blocks based on motion vectors.

Abstract: A method of transmitting video data includes receiving a frame of video data of a first resolution from an image capture device at a video transmission device and generating interlaced fields of the frame of video data at the video transmission device by applying a filter with a different set of filter coefficients to at least one field than is applied at least one other field. A method of producing video data of a particular resolution includes generating estimated high resolution video data from low resolution video data received at a display device, producing estimated low resolution video data from the estimated high resolution video data by applying a filter to the estimated high resolution video data, differencing the estimated low resolution video data and the received low resolution video data to generate difference data, and using the difference data to generate new estimated high resolution video data.

Abstract: The present invention provides a method and apparatus for the correction of time base errors in a video signal. The method and apparatus may combine a horizontal scaler and a time base corrector. A time base corrector in accordance with the present invention can function without locking a clock to a horizontal synchronization signal. Furthermore, a method or apparatus in accordance with the present invention may operate as a finite impulse response filter, an infinite impulse response filter, a low pass filter or an adaptive filter.

Abstract: A digital signal processing based decoder is disclosed. The decoder asynchronously samples video signals. By doing so, the decoder can work in pseudo real-time and without analog interface components improving performance while reducing cost.

Abstract: The present invention provides an apparatus and method for an adaptive Y/C separator that selects between input filters responsive to features of video signals. The adaptive Y/C separator can monitor the results of numerous filters and choose a combination of separators dependent upon signal properties. The adaptive Y/C separator can even blend results of the Y/C separators to improve signal quality.

Abstract: The present invention provides an ADC apparatus and method for improving effective bit resolution and suppressing digital reconstruction artifacts with an anti-aliasing filter and an over-sampled input. ADC resolution can be increased by combining a dither signal with a sampled signal and then after digitization, filtering out the dithered signal. Designing a notch in the filter corresponding to the attenuation frequency attenuates residual effects.