Abstract:
A system for handling special television video features digitally. The system receives incoming broadcast video into a switch (106). The switch allows the viewer to select a main channel and at least one auxiliary channel for viewing as a special feature, if the viewer does not want to view only the main channel for that particular special feature. The main video channel data is processed by a scan converter(216) to convert it from interlaced to progressive scan. A logic device(212) handles the auxiliary channel data to format it into the selected special feature and inputs that data to the scan converter(216) such that the special feature appears in the proper place relative to the main channel image.
Abstract:
A television system (100) and display method for receiving and displaying television broadcasts having various formats. The television system (100) resizes the various received image formats for display on a common display device. Images are resized horizontally by altering the rate at which data is sampled by the television (100). Images are resized vertically by using vertical scaling algorithms which alter the number of lines in an image. Format detection may be done automatically by decoding information contained in the vertical interval of the television broadcast signal, or by counting the number of lines in each frame. The input format may be indicated by a viewer.
Abstract:
A data converter (13) for providing data for secondary images in a video display system (10). One embodiment (FIGURE 2) provides data for a staggered pixel array, by using an A/D converter (23) to sample the data at a rate of 2/n(h) times the sample rate of the main image, where 1/n(h) is the horizontal scaling factor. A multiplexer (24) selects between two different sample patterns. Another embodiment (FIGURE 3) provides data for progressively scanned secondary images by selecting 2/n(v) times the number of lines per input field, where 1/n(v) is the vertical scaling factor.
Abstract:
A data converter (13) for providing data for secondary images in a video display system (10). One embodiment (FIGURE 2) provides data for a staggered pixel array, by using an A/D converter (23) to sample the data at a rate of 2/n(h) times the sample rate of the main image, where 1/n(h) is the horizontal scaling factor. A multiplexer (24) selects between two different sample patterns. Another embodiment (FIGURE 3) provides data for progressively scanned secondary images by selecting 2/n(v) times the number of lines per input field, where 1/n(v) is the vertical scaling factor.
Abstract:
A system for handling special television video features digitally. The system receives incoming broadcast video into a switch (106). The switch allows the viewer to select a main channel and at least one auxiliary channel for viewing as a special feature, if the viewer does not want to view only the main channel for that particular special feature. The main video channel data is processed by a scan converter(216) to convert it from interlaced to progressive scan. A logic device(212) handles the auxiliary channel data to format it into the selected special feature and inputs that data to the scan converter(216) such that the special feature appears in the proper place relative to the main channel image.
Abstract:
A television system (100) and display method for receiving and displaying television broadcasts having various formats. The television system (100) resizes the various received image formats for display on a common display device. Images are resized horizontally by altering the rate at which data is sampled by the television (100). Images are resized vertically by using vertical scaling algorithms which alter the number of lines in an image. Format detection may be done automatically by decoding information contained in the vertical interval of the television broadcast signal, or by counting the number of lines in each frame. The input format may be indicated by a viewer.