US5844630A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus and method for detecting motion vectors of pivel blocks of a digitized video signal
Assignee: S Aqua Semiconductor LLC
•
Filing: 1995-06-06
•
Granted: 1998-12-01
•
Expires: 2015-06-06
Abstract
Abstract A motion detector and a motion area detector detect shifts of areas at which motions exist by using signals of fields before and after the field to be detected. According to shifts of the detected areas, an initial vector closest to the true motion is selected among prospective initial vectors produced at an initial vector selector or an initial vector detector by a block matching method, thereby reducing detection errors in motion vectors occurring at a time of the detection of motion vectors, and thereby improving accuracy of motion vectors, so that image distortions would reduced in an interpolating process.
Inventors
- 👤 Tatsuo Yamauchi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 11:23
CPC Classifications
H; H04; H04N; H04N5/00; H04N5/14; H04N5/144; H04N5/145; G; G06; G06T; G06T7/00; G06T7/20; G06T7/223; G06T7/238; H04N19/00; H04N19/10; H04N19/102; H04N19/103; H04N19/105; H04N19/112; H04N19/134; H04N19/136; H04N19/137; H04N19/50; H04N19/503; H04N19/51; H04N19/56; G06T2207/00; G06T2207/10; G06T2207/10016; G06T2207/20; G06T2207/20048; G06T2207/20056
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
151 words
A method of detecting a motion vector for each block of each field of a digitized video signal, the digitized video signal being divided into successive fields, each field being subdivided into plural blocks, the motion vector of each block being a sum of an initial vector and an optimum vector, the method comprising the steps of: a. detecting movement of a picture at a block using signals located away from one another by at least one field to provide an output signal, delaying the output signal for a set time period, and judging whether the block is in a transition area between movement and stillness in the picture, using the delayed output signal; and b. if the block is in a transition area according to said step a, then, according to a condition of the transition area, selecting and performing one of the following steps to detect the motion vector
Claim 2
Independent Claim
151 words
A method of detecting a motion vector for each block of each field of a digitized video signal, the digitized video signal being divided into successive fields, each field being subdivided into plural blocks, the motion vector of each block being a sum of an initial vector and an optimum vector, the method comprising the steps of: a. detecting movement of a picture at a block using signals located away from one another by at least one field to provide an output signal, delaying the output signal for a set time period, and judging whether the block is in a transition area between movement and stillness in the picture, using the delayed output signal; and b. if the block is in a transition area according to said step a, then, according to a condition of the transition area, selecting and performing one of the following steps to detect the motion vector
Claim 3
Dependent Claim
99 words
producing plural prospective initial vectors from among motion vectors for other blocks and selecting the initial vector from among the produced plural prospective initial vectors, calculating the optimum vector from the selected initial vector, and determining the motion vector as the sum of the selected initial vector and the calculated optimum vector, and 2. detecting a provisional motion vector of the block, producing the initial vector from the detected provisional motion vector, calculating the optimum vector from the produced initial vector, and determining the motion vector as the sum of the produced initial vector and the calculated optimum vector.
Claim 4
Dependent Claim
99 words
producing plural prospective initial vectors from among motion vectors for other blocks and selecting the initial vector from among the produced plural prospective initial vectors, calculating the optimum vector from the selected initial vector, and determining the motion vector as the sum of the selected initial vector and the calculated optimum vector, and 2. detecting a provisional motion vector of the block, producing the initial vector from the detected provisional motion vector, calculating the optimum vector from the produced initial vector, and determining the motion vector as the sum of the produced initial vector and the calculated optimum vector.
Claim 5
Dependent Claim
27 words
A method of detecting motion vectors as set forth in claim 1, wherein said step b.2. includes producing the initial vector independently of other detected motion vectors.
Claim 6
Dependent Claim
77 words
A method of detecting motion vectors as set forth in claim 2, wherein selecting said initial vector includes selecting a vector at which motion is null as the initial vector if the transition area is an area of transition from motion to stillness in the picture, and selecting a motion vector detected by a block matching method as the initial vector when the transition area is an area of transition from stillness to motion in the picture.
Claim 7
Dependent Claim
77 words
A method of detecting motion vectors as set forth in claim 1, wherein selecting said initial vector includes selecting a vector at which motion is null as the initial vector if the transition area is an area of transition from motion to stillness in the picture, and selecting a motion vector detected by a block matching method as the initial vector when the transition area is an area of transition from stillness to motion in the picture.
Claim 8
Dependent Claim
67 words
A method of detecting motion vectors as set forth in claim 1, further comprising the step of storing the detected motion vector in a memory, wherein said step of producing plural prospective initial vectors from among the motion vectors for other blocks includes selecting the prospective initial vectors from among the motion vectors stored in the memory, and generating the selected prospective initial vectors from the memory.
Claim 9
Dependent Claim
35 words
A method of detecting motion vectors as set forth in claim 2, wherein the condition of the transition area is from motion to stillness in the picture or from stillness to motion in the picture.
Claim 10
Dependent Claim
27 words
A method of detecting motion vectors as set forth in claim 6, wherein said step b.2. includes producing the initial vector independently of other detected motion vectors.
Claim 11
Independent Claim
263 words
An apparatus for detecting a motion vector for each block of each field of a digitized video signal, the digitized video signal being divided into successive fields, each field being subdivided into plural blocks, the motion vector of each block being a sum of an initial vector and an optimum vector, the apparatus comprising: means for detecting movement of a picture using signals located away from one another by at least one field to provide an output signal; means for delaying the output signal for a set time period; means for judging whether a block is in a transition area which is an area of transition between movement and stillness in the picture, using the delayed output signal; and means for determining the motion vector when the block is judged by the judging means to be in a transition area, including first initial vector obtaining means for producing plural prospective initial vectors from among motion vectors for other blocks and for selecting the initial vector from among the produced plural prospective initial vectors, second initial vector obtaining means for detecting a provisional motion vector of the block and for producing the initial vector from the detected provisional motion vector, means for choosing either the initial vector selected by said first initial vector obtaining means or the initial vector produced by the second initial vector obtaining means according to a condition of the transition area, means for calculating the optimum vector from the chosen initial vector, and means for adding the chosen initial vector and the calculated optimum vector to determine the motion vector.
Claim 12
Independent Claim
263 words
An apparatus for detecting a motion vector for each block of each field of a digitized video signal, the digitized video signal being divided into successive fields, each field being subdivided into plural blocks, the motion vector of each block being a sum of an initial vector and an optimum vector, the apparatus comprising: means for detecting movement of a picture using signals located away from one another by at least one field to provide an output signal; means for delaying the output signal for a set time period; means for judging whether a block is in a transition area which is an area of transition between movement and stillness in the picture, using the delayed output signal; and means for determining the motion vector when the block is judged by the judging means to be in a transition area, including first initial vector obtaining means for producing plural prospective initial vectors from among motion vectors for other blocks and for selecting the initial vector from among the produced plural prospective initial vectors, second initial vector obtaining means for detecting a provisional motion vector of the block and for producing the initial vector from the detected provisional motion vector, means for choosing either the initial vector selected by said first initial vector obtaining means or the initial vector produced by the second initial vector obtaining means according to a condition of the transition area, means for calculating the optimum vector from the chosen initial vector, and means for adding the chosen initial vector and the calculated optimum vector to determine the motion vector.
Claim 13
Dependent Claim
32 words
An apparatus for detecting motion vectors as set forth in claim 8, wherein said second initial vector obtaining means includes means for producing the initial vector independently of other detected motion vectors.
Claim 14
Dependent Claim
78 words
An apparatus for detecting motion vectors as set forth in claim 9, wherein said first initial vector obtaining means selects a vector at which motion is null as the initial vector when the transition area is an area of transition from motion to stillness in the picture and selects a motion vector detected by a block matching method as the initial vector when the transition area is an area of transition from stillness to motion in the picture.
Claim 15
Dependent Claim
78 words
An apparatus for detecting motion vectors as set forth in claim 8, wherein said first initial vector obtaining means selects a vector at which motion is null as the initial vector when the transition area is an area of transition from motion to stillness in the picture and selects a motion vector detected by a block matching method as the initial vector when the transition area is an area of transition from stillness to motion in the picture.
Claim 16
Dependent Claim
61 words
An apparatus for detecting motion vectors as set forth in claim 8, wherein said first initial vector obtaining means for producing plural prospective initial vectors includes a memory for storing the detected motion vector and means for selecting the prospective initial vector from among motion vectors stored in the memory and for generating the selected prospective initial vectors from the memory.
Claim 17
Dependent Claim
35 words
An apparatus for detecting motion vectors as set forth in claim 8, wherein the condition of the transition area is from motion to stillness in the picture or from stillness to motion in the picture.
Claim 18
Dependent Claim
32 words
A apparatus for detecting motion vectors as set forth in claim 13, wherein said second initial vector obtaining means includes means for producing the initial vector independently of other detected motion vectors.
References Cited (Backward Citations)
US5359697A
Cited
US5126841A
Cited
US5450126A
Cited
US5189518A
Cited
US4937666A
Cited
US5153719A
Cited
US5291563A
Cited
US5557341A
Cited
US5410356A
Cited
US5151784A
Cited
US5436674A
Cited
US5371539A
Cited
US5337086A
Cited
US5398078A
Cited
US5369449A
Cited
US5400076A
Cited
EP0549471A1
Cited
US5489949A
Cited
US5327232A
Cited
US5508744A
Cited
US5594504A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2001-11-30 | 2002-06-01 | 2002-12-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2005-11-30 | 2006-06-01 | 2006-12-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2009-11-30 | 2010-06-01 | 2010-12-01 | $7700.00 | Window Closed / Lapsed |