100results about "Incoming video signal resampling" patented technology

A multimedia device includes input ports dedicated to receiving a real-time media signal and a processor system dedicated to capturing the real-time media signal. The processor system defines an embedded environment. The input ports and the processor system are integrated into the multimedia capture device. The input ports include an audio input port and at least one of a visual-capture input port or a digital-image input port.

A video format identification system includes a master clock circuit which provides timing and counting signals, a synchronization activity detector operatively coupled to the master clock circuit, and a synchronization width qualifier configured to filter out noise or reference burst signals from showing up as sync signals. The system also includes a synchronization detector which regulates the rate of the incoming sync signal, a color burst sampler providing a window for sampling a reference color burst after the sync signal has occurred, and a color burst detector which looks for at least three transitions from a burst signal before it qualifies the as an appropriate reference color burst. A format sample timer generates sample clock signals. A format sample counter produces “take format” signals which are utilized by a set of format counter. The system further includes a video format identifier which enables a particular video format to be directed to a respective video connector.

A method for selectively and sequentially converting digital video data signals in three formats, namely, standard definition, progressive scan and high definition formats to analogue form such that the same analogue reconstruction filter can be used for filtering the analogue forms of the signals after conversion. The digital signals prior to being converted are over-sampled at respective over-sampling frequencies for displacing image frequencies to frequencies sufficiently spaced apart from the widest band width signal so that the analogue reconstruction filter can be provided for filtering the widest band width signal as well as the other band width signals and also can be provided with a relatively low roll-off rate of attenuation. The standard definition video data signals are over-sampled at eight times the nyquist sampling frequency, and the progressive scan signals are over-sampled at four times the nyquist sampling frequency, thus displacing image frequencies of the standard definition and progressive scan signals to 108 MHz, so that the centre frequency of the image frequency is displaced to 108 MHz. The high definition video signals are over-sampled at twice the nyquist sampling frequency, thus displacing the image frequency of the high definition signal to 148.5 MHz, so that its centre frequency is displaced to 148.5 MHz. This, thus, leaves a frequency band gap of approximately 66 MHz between the high definition band width signal and the closest image frequency, namely, that of the progressive scan signal. The method can also be applied to the conversion of analogue video signals to digital form whereby the same analogue anti-aliasing filter can be used for the analogue signals in the three formats.

An encoding device evaluates a plurality of processing and / or post-processing algorithms and / or methods to be applied to a video stream, and signals a selected method, algorithm, class or category of methods / algorithms either in an encoded bitstream or as side information related to the encoded bitstream. A decoding device or post-processor utilizes the signaled algorithm or selects an algorithm / method based on the signaled method or algorithm. The selection is based, for example, on availability of the algorithm / method at the decoder / post-processor and / or cost of implementation. The video stream may comprise, for example, downsampled multiplexed stereoscopic images and the selected algorithm may include any of upconversion and / or error correction techniques that contribute to a restoration of the downsampled images.

A method for performing super-resolution comprises steps of generating the high-resolution, low-frequency spatial and temporal bands of the input video sequence by interpolation, synthesizing the high-resolution, high-frequency spatial band by cross-frame spatial high-frequency extrapolation, and fusing these two bands to generate the spatio-temporally super-resolved video sequence. A corresponding system for performing super-resolution comprises a stage where the high-resolution, low-frequency spatial and temporal bands of the input video sequence is generated by interpolation, a stage where the high-resolution, high-frequency spatial band is synthesized by cross-frame spatial high-frequency extrapolation, and a stage where these two bands are fused to generate the spatio-temporally super-resolved video sequence.

A broadcast receiving apparatus, and method, for capturing a broadcast signal, the apparatus including a signal processor to receive broadcast signals and process the broadcast signals, a controller to capture a certain frame data from the broadcast signals processed by the signal processor, check an input resolution of the broadcast signals, and decide whether to perform a down-scaling with respect to the captured frame data, a down-scaler to down-scale the frame data which is decided by the controller to be down-scaled, and a storage unit to store the down-scaled frame data. Accordingly, an image can be captured and a captured frame data can be stored without being degraded, preventing memory consumption.