Scalable video format conversion system
View Patent ↗The present invention discloses a scalable video format conversion system, which utilizes a plurality of system resources to convert an interlaced video signal into a progressive video signal. The disclosed scalable video format conversion system contains a scalable motion-adaptive de-interlacing system and a mode control module. The mode control module determines a detection number dynamically according to the availability of the system resources and/or the status of the scalable video format conversion system. A variable-field motion detection apparatus of the scalable motion-adaptive de-interlacing system accesses a plurality of video fields to detect a motion situation of an image area, wherein the number of the plurality of accessed video is equal to the detection number determined by the mode control module. Then, the scalable motion-adaptive de-interlacing system choose a proper de-interlacing algorithm according to the detected motion situation, to convert the interlaced video signal into the progressive video signal.
1. A scalable video format conversion system for utilizing various system resources to convert an interlaced video signal into a progressive video signal, the scalable video format conversion system comprising:
a scalable motion-adaptive de-interlacing system for converting the interlaced video signal into the progressive video signal according to a motion situation of an image area, the scalable motion-adaptive de-interlacing system comprising:
a variable-field motion detection apparatus for accessing a plurality of video fields to detect the motion situation of the image area, wherein the number of the plurality of accessed video fields is equal to a detection number, and the detection number is determined by a mode control signal; and
a mode control module for generating the mode control signal according to the availability of the various system resources and/or the status of the scalable video format conversion system.
2. The scalable video format conversion system of claim 1 , wherein the scalable motion-adaptive de-interlacing system comprises at least one motion detector, and at least one interpolator controlled by the motion detector.
3. The scalable video format conversion system of claim 1 , wherein the availability of the various system resources is dependent upon the available computational power, the available memory space, the available memory bandwidth, and/or the system power of the scalable video format conversion system.
4. The scalable video format conversion system of claim 1 , wherein the status of the scalable video format conversion system is dependent upon the bit rate of a video bit-stream and/or an audio bit-stream.
5. The scalable video format conversion system of claim 1 , wherein the status of the scalable video format conversion system is dependent upon the data processing rate of a video decoder and/or an audio decoder.
6. The scalable video format conversion system of claim 1 , wherein the status of the scalable video format conversion system is dependent upon the data processing rate of a video encoder and/or an audio encoder.
7. The scalable video format conversion system of claim 1 , wherein the status of the scalable video format conversion system is dependent upon the workload of a decoder parser and/or an encoder parser.
8. The scalable video format conversion system of claim 1 , wherein the status of the scalable video format conversion system is dependent upon the display or decoding workload of a sub-picture controller.
9. The scalable video format conversion system of claim 1 , wherein the status of the scalable video format conversion system is dependent upon the display workload of an on-screen-display (OSD) controller.
10. The scalable video format conversion system of claim 1 , wherein the status of the scalable video format conversion system is dependent upon the memory bandwidth workload of a memory controller.
11. The scalable video format conversion system of claim 1 , wherein the status of the scalable video format conversion system is dependent upon a user-selectable display mode, such as Letterbox, Pan-scan, NTSC-to-PAL conversion, PAL-to-NTSC conversion, Zoom in, or Zoom out.
12. The scalable video format conversion system of claim 1 , wherein the detection number ranges from 2 to 6.