Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
210 words
A method for encoding successive frames of a digital motion video signal in the form of compressed digital data including an intraframe coded signal and a plurality of interframe coded signals, said method comprising the steps of: encoding a first frame of said digital motion video signal in the form of one of an intraframe coded signal and an interframe coded signal to produce a compressed digital signal; decoding said compressed digital signal to form a decoded signal; producing a plurality of predicted video signal frames representing a second frame of said digital motion video signal other than said first frame, at least one of said plurality of predicted video signal frames being produced with the use of said decoded signal and a motion vector representing motion between frames of said digital motion video signal; comparing said plurality of predicted video signal frames with said second frame of said digital motion video signal for producing a plurality of difference data each corresponding with a respective one of said plurality of predicted video signal frames; selecting one of said predicted video signal frames having a smallest corresponding difference data; and generating an interframe coded signal of said compressed digital data corresponding to the selected one of said predicted video signal frames.
Claim 2
Independent Claim
210 words
A method for encoding successive frames of a digital motion video signal in the form of compressed digital data including an intraframe coded signal and a plurality of interframe coded signals, said method comprising the steps of: encoding a first frame of said digital motion video signal in the form of one of an intraframe coded signal and an interframe coded signal to produce a compressed digital signal; decoding said compressed digital signal to form a decoded signal; producing a plurality of predicted video signal frames representing a second frame of said digital motion video signal other than said first frame, at least one of said plurality of predicted video signal frames being produced with the use of said decoded signal and a motion vector representing motion between frames of said digital motion video signal; comparing said plurality of predicted video signal frames with said second frame of said digital motion video signal for producing a plurality of difference data each corresponding with a respective one of said plurality of predicted video signal frames; selecting one of said predicted video signal frames having a smallest corresponding difference data; and generating an interframe coded signal of said compressed digital data corresponding to the selected one of said predicted video signal frames.
Claim 3
Dependent Claim
44 words
A method according to claim 1, wherein the step of producing a plurality of predicted video signal frames comprises transforming said decoded signal with the use of said motion vector to produce said at least one of said plurality of predicted video signal frames.
Claim 4
Dependent Claim
31 words
A method according to claim 1 or 2, wherein the step of encoding a first frame of said digital motion video signal comprises encoding a frame thereof preceding said second frame.
Claim 5
Dependent Claim
31 words
A method according to claim 1 or 2, wherein the step of encoding a first frame of said digital motion video signal comprises encoding a frame thereof following said second frame.
Claim 6
Independent Claim
38 words
A method according to any one of claims 1 to 4, wherein the step of encoding a first frame of said digital motion video signal comprises encoding said first frame in the form of an intraframe coded signal.
Claim 7
Dependent Claim
41 words
A method according to claim 1, wherein the step of encoding a first frame of said digital motion video signal comprises encoding said first frame in the form of an interframe coded signal wherein said first frame follows said second frame.
Claim 8
Dependent Claim
41 words
A method according to claim 1, wherein the step of encoding a first frame of said digital motion video signal comprises encoding said first frame in the form of an interframe coded signal wherein said first frame precedes said second frame.
Claim 9
Independent Claim
67 words
A method according to any one of the preceding claims, wherein the step of producing a plurality of predicted video signal frames comprises producing an average value of a first interframe coded signal based on a frame of said digital motion video signal preceding said second frame and a second interframe coded signal based on a frame of said digital motion video signal following said second frame.