Abstract: A system and method that repeat video images in a deinterlacing system. The method comprises detecting a signal requesting an input video image be repeated and determining the desired number of repetitions. The input video image may then be processed to generate an output video image and the output video image may be repeated the desired number of repetitions. The input video images following the repeated image may be held until the repeating is completed, and may then be processed and displayed. Repeating the video image may be utilized to achieve different playback modes such as, for example, slow motion, pause, and video rate conversion.

Abstract: A method and system for reducing the appearance of jaggies when deinterlacing moving edges in a video processing system are provided. The method may comprise detecting the direction of an angled edge in an interlaced video image to determine a filtering direction to be used for approximating absent pixels in deinterlacing the interlaced video. In detecting the direction of the angled edge, a group of windows of different sizes may be used to look at the edge, where a missing pixel is the center of each of the windows. Detecting the direction of the edge, and therefore the direction of filtering, may comprise: determining the angle associated with the edge, determining the strength of the edge, examining the pixels surrounding the absent pixel, and adjusting the first angle measure and the second angle measure based on the pattern of the surrounding pixels.

Abstract: A method and system for reducing the appearance of jaggies when deinterlacing moving edges in a video processing system are provided. The method may comprise detecting the direction of an angled edge in an interlaced video image to determine a filtering direction to be used for approximating absent pixels in deinterlacing the interlaced video. In detecting the direction of the angled edge, a group of windows of different sizes may be used to look at the edge, where a missing pixel is the center of each of the windows. Detecting the direction of the edge, and therefore the direction of filtering, may comprise: determining the angle associated with the edge, determining the strength of the edge, examining the pixels surrounding the absent pixel, and adjusting the first angle measure and the second angle measure based on the pattern of the surrounding pixels.

Abstract: A method and system for reducing the appearance of jaggies when deinterlacing moving edges in a video processing system are provided. The method may comprise detecting the direction of an angled edge in an interlaced video image to determine a filtering direction to be used for approximating absent pixels in deinterlacing the interlaced video. In detecting the direction of the angled edge, a group of windows of different sizes may be used to look at the edge, where a missing pixel is the center of each of the windows. Detecting the direction of the edge, and therefore the direction of filtering, may comprise: determining the angle associated with the edge, determining the strength of the edge, examining the pixels surrounding the absent pixel, and adjusting the first angle measure and the second angle measure based on the pattern of the surrounding pixels.

Abstract: A system and method that detect edges that are near horizontal thin lines in interlaced video in a deinterlacer. The system may detect edges in a video image and determine whether the edges are diagonal or nearly horizontal edges. Based on the determination the system may select a filter appropriate for filtering the edge. The system may utilize a control signal that may be low or high, and may according disable or enable filtering nearly horizontal edges, respectively.

Abstract: A system and method that convert a video source from a first rate to a second rate. The system may have as an input a video that may be frame-based or field-based at a first rate, and convert the input video to an output video that may be frame-based or field-based at a second rate. The first rate may be 50 Hz and the second rate may be 60 Hz. Converting from the first rate to the second rate may comprise repeating frames or fields. For example, when converting from a frame-based 50 Hz input video to a frame-based 60 Hz output video, the output video comprises frames where every sixth frame is a repeated version of the preceding frame.

Abstract: A system and method that determine a portion of video data with relevant information about that video to be used in statistical calculations associated with the video. The method may comprise determining the starting line and ending line of the portion of video data with the relevant information. The remaining portion of the video data may comprise information that may contain no statistical information. The remaining portion may be a vertical blanking interval.

Abstract: In a video system, a method and system for control of a multi-field deinterlacer including visually pleasing start-up and shut-down are provided. During a hard start, a deinterlacer may deinterlace a first received field and provide the resulting frame for display until sufficient fields are received to generate a pixel constellation for deinterlacing subsequent received fields. The deinterlacer may also provide a constant frame for display until sufficient fields are received to generate the pixel constellation. During normal operation, the deinterlacer may mitigate the effects of a discrepancy as to the received field type. When a video source is jittery or there is uncertainty as to the field type, deinterlacing may be forced to be based on spatial information. When a video source is shut off, a portion of the remaining stored fields may be flushed. At least one of the flushed fields may be deinterlaced and displayed.

Abstract: A system and method that determine the motion of an absent pixel in a video image. The method may comprise determining the spatial motion and the temporal motion of the absent pixel. The method may also comprise selecting the stronger of the two determined motions. Determining the spatial motion may comprise selecting one of two methods for determining spatial motion. Determining the temporal motion may comprise selecting one of three methods for determining temporal motion. Selection of the methods used may be determined by a user of the system.

Abstract: Various aspects of the low cost line buffer system allow a reduction in circuitry versus conventional approaches to line buffer design. A plurality of line buffers such that the output of one line buffer in the plurality of line buffers may be coupled to an input of a succeeding line buffer in the plurality of line buffers. A first line buffer in the plurality of line buffers may be coupled to an input write data signal, while the width of a subsequent plurality of line buffers may be less than or equal to the width of the previous line buffers in the plurality of line buffers.

Abstract: In a video system, a method and system for minimizing both on-chip memory size and peak DRAM bandwidth requirements for multi-field deinterlacers are provided. Present line pixels and absent line pixels may be determined and may be ordered into upper line pixels and lower line pixels based on whether an interlaced output frame is top field or bottom field originated. Upper line pixels may be buffered in an upper line FIFO that may hold half a video line and lower line pixels may be buffered in an lower line FIFO that may hold a video line. A source switch and a line length counter may be used to assemble the deinterlaced output frame by selecting from the buffered upper line pixels and the buffered lower line pixels. The deinterlaced output frame may be buffered in an output FIFO.

Abstract: In a video system, a method and system for pixel constellation in a motion detection deinterlacer are provided. An output pixel in an absent line of a current frame may be determined based on a constellation of pixels from at least one present line above and at least one present line below the absent line. The present lines may be immediately above and/or below the absent line. Pixels from the present lines immediately above and/or below include the pixel directly above and/or below the output pixel and/or at least two pixels to either side. The output pixel may also be determined from present lines in fields that occur prior to and/or after the current field. The fields may be those that occur immediately before and/or after the current field and/or the second and third field that occur after the current field.

Abstract: A system and method that scales interlaced video fields with different sizes in a deinterlacer. The deinterlacer may expect video fields of a certain size. The input to the system may be a video stream of interlaced content, with fields having different sizes depending on the video content. The method scales the input video fields to the appropriate size expected by the deinterlacer. The expected size of the fields may be programmable. The method may provide an output with the expected size of black pixels in the absence of an input to the system.