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AssigneeU.S. Philips Corporation
InventorsGerard M. X. Fernando, David W. Parker, Peter Saraga
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A television signal for a television transmission system conveys a motion information signal in addition to the vision signal. At the transmission side each field of a picture is subdivided into a plurality of regions and up to a given number of the most dominant motion vectors appropriate to a region are generated. These motion vectors are transmitted as the motion information signal and in a receiver are separated from the television signal in a decoder (12). The spatially offset pixels are identified in a first spatial offset circuit (14) from a vision signal delayed by a picture memory (16) and compared in a picture information comparison circuit (17) with pixels in the corresponding field of the current picture to identify the motion vector indicating the pixel of corresponding magnitude. This is applied to an input of a second spatial offset circuit (19) a second input of which receives the delayed vision signal to produce motion compensated pixels which together with pixels from the current vision signal are up-converted and interpolated in a unit (18) to produce an up-converted vision signal.
A television transmission system comprising a signal generator for producing a television signal which comprises a vision signal representing a sequence of pictures with each picture containing a plurality of sequential or interlaced lines and further comprises a motion information signal, each field of a picture being subdivided into a plurality of regions, a transmission channel for conveying said television signal from said generator to a television receiver in which the vision signal and motion information signal in the received television signal are processed to enable a television display to be provided, characterized in that in the signal generator a number of motion vectors are produced for each region and up to a limited number, which limited number is an integral number greater than one, of the most dominant of the motion vectors appropriate to that region are selected, the selected motion vectors for the various regions in a field forming said motion information signal while in the receiver a number, which corresponds to the said limited number, of comparisons are made for each picture information point in a region in at least the major part of each field between vision information in the vision signal for a region in a first field and respective offsets comprising spatially offset vision information in a corresponding field for an adjacent picture which offsets are determined by each selected motion vector appropriate to the region containing the vision information the subject of the said comparisons, and utilizing the results of the comparisons for the regions to derive from said received vision signal vision information for an up-converted picture signal.
A method for producing a television signal which comprises a vision signal of a continuous sequence of pictures with each picture containing a plurality of sequential or interlaced lines and further comprises a motion information signal, said method comprising the steps of:
A method for processing a television signal which comprises a vision signal representing a sequence of pictures each comprising a plurality of lines and further comprising a motion information signal comprising up to a first number of dominant motion vectors for each of a plurality of regions into which each field of a picture is subdivided, said method comprising the steps of:
Dependencies are inferred from the claim text.