Television receiver for receiving a plurality of formats of video signals having different resolutions
AssigneeSony Corporation
InventorSatoshi Kobayashi
Life of this patent
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Abstract
Display source memories of resolutions according to image formats are prepared. The image format is discriminated from an extracted video packet. A font or a bit map is read out from the display source memory corresponding to the image format. The font or bit map corresponding to the image format is developed in an OSD plane memory and synthesized to a video signal by a mixing circuit. Thus, a character or a bit map picture plane of similar quality and size can be always seen irrespective of the received image format.
Claims6
A television receiver for receiving a plurality of formats of video signals having different resolutions, comprising:
- resolution discriminating means for discriminating a resolution of the received video signal;
- a source memory in which a plurality of display patterns of additional video image constructed by characters and/or figures have been recorded by an amount of said corresponding plural video signal formats;
- display image forming means for reading out the display patterns in said source memory, constructing a display image, and transferring said display image to a display memory;
- and
- a mixing circuit for mixing the display image read out from said display memory and the received video signal,
- wherein one of display patterns of the corresponding resolution is selected from said source memory in accordance with the resolution of the received video signal determined by said resolution discriminating means, the display image is constructed from said selected display pattern, said display image is superimposed onto said received video signal, and a resultant image is displayed.
A television receiver for receiving video signals of a plurality of formats of different aspect ratios of images, comprising:
- discriminating means for discriminating the aspect ratio of the received video signal;
- a source memory in which display patterns of additional video images constructed by characters or figures have been recorded by an amount corresponding to a plurality of patterns at aspect ratios corresponding to said video signals of said plurality of formats of said different aspect ratios;
- display image forming means for reading out one of the display patterns in said source memory, constructing a display image, and transferring said display image to a display memory;
- and
- a mixing circuit for synthesizing the display image read out from said display memory and the received or inputted video signal on a picture plane,
- wherein a corresponding one of said plurality of display patterns is selected in accordance with the aspect ratio of the video signal determined by said discriminating means, the display image is constructed from the selected display pattern, said display image is synthesized to said received or inputted video signal, and a resultant image is displayed.
Dependencies are inferred from the claim text.