1
Michael Knee, Andreas Zipp, Andrew Hackett, Nelly Bruneau: Method and apparatus for ghost cancelling and/or equalizing. Thomson Consumer Electronics, Joseph S Tripoli, Eric P Herrmann, July 23, 1996: US05539773 (54 worldwide citation)

A method for signal equalization/ghost cancellation with an equalizing filter includes synthesizing a first equalizing filter function (LMS 1) with N (an integer) taps and associated coefficients. The respective coefficients are adjusted to minimize the error between a received reference signal outp ...


2
Andrew Hackett, Michael Knee, Michel Kerdranvat, Nadine Bolender: Method and apparatus for forming a video signal using motion estimation and signal paths with different interpolation processing. Thomson Consumer Electronics, Joseph S Tripoli, Peter M Emanuel, Richard G Coalter, August 13, 1996: US05546130 (29 worldwide citation)

Motion compensated video output signal (SO) produced by a soft switching or "fading" (SSW) between the a motion compensated interpolation (MCI) and a "fallback" mode (FFI) (e.g., intra-field), controlled by a "measure of confidence" (CF) in the reliability of the estimated motion vector. The confide ...


3
Andrew Hackett, Michael Knee, Michel Kerdranvat, Nadine Bolender: Method and apparatus for motion compensated interpolation of intermediate fields or frames. Thomson Consumer Electronics, Joseph S Tripoli, Frederick A Wein, June 24, 1997: US05642170 (28 worldwide citation)

An appearance of a double image around moving objects may be reduced or removed by generating motion compensated 100 Hz fields with the objects in correct positions. When, however, the results of this technique are applied to motion compensated upconversion, objects or parts of the picture which fal ...


4
Andrew Hackett: Method and apparatus for reducing conversion artifacts. Thomson Consumer Electronics, Joseph S Tripoli, Peter M Emanuel, Frederick A Wein, March 11, 1997: US05610662 (23 worldwide citation)

When film is transmitted by television, the same frame of film is used to generate both interlace television fields. This results in the information carried by the second field being temporally displaced from the original by 20 ms. This displacement gives rise to judder and double image artifacts in ...


5
Michael Knee, Andrew Hackett, Michael Kerdranvat, Nadine Bolender: Method and apparatus for motion estimation using block matching. Thomson multimedia, Joseph S Tripoli, Frederick A Wein, October 13, 1998: US05822007 (17 worldwide citation)

Block matching is well known as a robust and intuitively simple method of motion estimation for television pictures. However, when the purpose of the motion estimation is to provide accurate interpolation between images, conventional block matching suffers from the problem that the blocks are situat ...


6
Andrew Hackett: Apparatus for processing predistorted first video signal and data reduced second video signal. Deutsche Thomson Brandt, Joseph S Tripoli, Eric P Herrmann, Ronald H Kurdyla, February 9, 1993: US05185663 (12 worldwide citation)

A system to facilitate mixing and recording video signals of different standards, e.g., in digital format via a digital video recorder, is disclosed. A first video signal in progressive scan format is converted to a standard format (e.g., line interlaced) prior to recording. A standard second video ...


7
Andrew Hackett, Michael Knee, Michel Kerdranvat, Nadine Bolender: Method and apparatus for motion estimation using block matching. Thomson Licensing, Joseph S Tripoli, Ronald H Kurdyla, Guy H Eriksen, August 20, 2002: US06438170 (11 worldwide citation)

Block matching is a robust and simple method of motion estimation for television pictures. One important parameter in block matching is the block size. Large blocks give more reliable motion estimation than small blocks, particularly in the presence of noise on the input picture, but they produce a ...


8
Andrew Hackett, Michael Knee, Michel Kerdranvat, Nadine Bolender: Method and apparatus for correcting motion vectors. Thomson Consumer Electronics, Joseph S Tripoli, Frederick A Wein, August 11, 1998: US05793430 (8 worldwide citation)

Motion vectors resulting from block matching are corrected for periodic structures by taking a more reliable vector from an edge of a moving object containing the periodic structure. This is done by calculating and comparing different error combinations to identify periodic structures and replacing ...


9
Andrew Hackett: Method of measuring the noise in an active video image and device for implementing the method. Thomson Consumer Electronics, Oblon Spivak McClelland Maier & Neustadt, February 28, 1995: US05394192 (3 worldwide citation)

A method of measuring the noise in an active video image. During a given processing period, for each pixel of a video image considered to be stationary, the difference f.sub.d between the video signal corresponding to this pixel and the video signal corresponding t the pixel at the same spatial posi ...


10
Andrew Hackett: Method and device for measuring the noise in an active video image. Thomson Consumer Electronics, April 3, 1992: FR2667475-A1

The present invention relates to a method for measuring the noise in an active video image. It includes the following steps, during a given treatment period, for each pixel of a video image considered as stationary, the difference fd between the video signal corresponding to said pixel and the video ...