| 摘要 |
Methods and apparatus for encoding, decoding and displaying images in a manner that provides for relatively smooth motion are described. In accordance with the invention a multi-sync display device is used and the refresh rate of the display device is controlled to minimize or avoid judder. Control of the display device refresh rate is performed in various embodiments, as a function of frame display, frame coding, field coding and/or image capture rate information included in an encoded bitstream. Alternatively, the refresh rate of a display is controlled as a function of decoding rate information or other information available from a decoder. In one exemplary embodiment, frames are displayed and the refresh rate of a display device is controlled to be an integral multiple of the indicated frame display rate included in an encoded bitstream. In accordance with an encoding feature of the present invention, refresh rate control information is included in an encoded video bitstream and used by a display system to control the refresh rate of a display device used to display images represented by the encoded video bitstream. The refresh rate control information is information which is not necessary for decoding but useful in achieving high quality display of the images. In accordance with the refresh rate control methods of the invention, a display device's refresh rate may vary depending on the video being displayed.
|
