Method of coding and transmission of progressive video using differential signal overlay
AssigneeCable Television Laboratories, Inc.
InventorsYasser Syed, Mukta Kar
Life of this patent
Estimating the term…
Abstract
A method of coding and transmission of a 1080p or other higher resolution picture using a lower resolution differential signal overlay on top of a lower resolution existing video signal. The method may be useful for television service providers or other video related application providers in that the use of the lower resolution signals may allow the providers to utilize existing capabilities while providing a higher resolution picture.
Claims24
A method of simulating a 1080p signal, the method comprising:
- transmitting a first 1080i signal with motion vectors;
- transmitting a second 1080i signal with less motion vectors than the first 1080i signal;
- and
- enabling simultaneous decode of the first and second 1080i signals, the simultaneous decode of the first and second 1080i signals forming the 1080p signal.
A method of simulating a progressive signal with non-progressive signals, the method comprising:
- transmitting a first interlaced signal with motion vectors;
- transmitting a second interlaced signal with less motion vectors than the first signal;
- and
- enabling simultaneous decoding of the first and second signals, the simultaneous decoding of the first and second signals providing the progressive signal.
A method of displaying a picture, the method comprising:
- receiving a first signal representing the picture with a first spatial resolution, the first signal being sampled from the picture;
- receiving a second signal representing the picture with a second spatial resolution, the second signal being sampled from the picture at the same instance in time as the first signal, the first and second spatial resolutions being approximately equal;
- combining the received second signal with the received first signal in order to display the picture with a third spatial resolution, the third spatial resolution being approximately equal to a sum of the first and second spatial resolutions;
- and
- keying the second signal according to motion vectors associated with the first signal.
A method of displaying a picture, the method comprising:
- receiving a first signal representing the picture with a first spatial resolution, the first signal being sampled from the picture;
- receiving a second signal representing the picture with a second spatial resolution, the second signal being sampled from the picture at the same instance in time as the first signal, the first and second spatial resolutions being approximately equal;
- combining the received second signal with the received first signal in order to display the picture with a third spatial resolution, the third spatial resolution being approximately equal to a sum of the first and second spatial resolutions;
- and
- the second signal being provided with less motion vectors than the first signal.
Dependencies are inferred from the claim text.