Digitally assisted motion compensated deinterlacing for enhanced definition television

Patent 5305104 Issued on April 19, 1994. Estimated Expiration Date:

July 27, 2012. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.

Abstract Claims Description Full Text

Patent References

Circuit implementation of block matching algorithm
Patent #: 4897720
Issued on: 01/30/1990
Inventor: Wu, et al.

High definition TV system
Patent #: 4916525
Issued on: 04/10/1990
Inventor: Drummond

Extended definition widescreen television signal processing system with alternate subcarrier
Patent #: 4926244
Issued on: 05/15/1990
Inventor: Isnardi

Widescreen television signal processor system with interpolator for reducing artifacts
Patent #: 4967263
Issued on: 10/30/1990
Inventor: Dieterich

Method for the encoding of data for assistance in the reconstruction of a sub-sampled moving electronic image
Patent #: 4980764
Issued on: 12/25/1990
Inventor: Henot

High definition television signal processing including subsampling and motion compensation
Patent #: 5008746
Issued on: 04/16/1991
Inventor: Bernard, et al.

Vertical edge detection circuit for a television image motion adaptive progressive scanning conversion circuit
Patent #: 5051826
Issued on: 09/24/1991
Inventor: Ishii, et al.

Time-recursive deinterlace processing for television-type signals Patent #: 5134480
Issued on: 07/28/1992
Inventor: Wang, et al.

Inventors

Application

No. 919857 filed on 07/27/1992

US Classes:

348/473, Including additional information348/441, FORMAT CONVERSION348/469FORMAT

Examiners

Primary: Kostak, Victor R.

Attorney, Agent or Firm

Brumbaugh, Graves, Donohue & Raymond

International Class

H04N 007/08

Abstract

In an Enhanced Definition Television (EDTV) system, an assistance signal is transmitted to enable a suitably equipped receiver to choose from a number of predetermined deinterlacing modes. The modes represent interpolation options for estimating lines missing in a current interlaced image field, thereby enhancing the vertical resolution of a display. For example, five options may be provided for as follows: (1) intra-frame linear interpolation, (2) use of information from a preceding frame, (3) use of information from a succeeding frame, (4) combining the results of (1) and (2), and (5) combining the results of (1) and (3). Preferably, interpolation options are derived on a block basis and transmitted with coded motion vectors which may be compressed to make maximum use of the available bandwidth. The assistance signal may be transmitted within the vertical and/or horizontal blanking intervals of an interlaced television broadcast.

Other References

M. A. Isnardi et al., "Encoding for Compatibility and Recoverability in the ACTV System", IEEE Transactions on Broadcasting, vol. BC-33 (1987), pp. 116-123
S. N. Baron et al., "An Evolutionary Approach to Advanced Television Services: The ACTV (Advanced Compatible Television) System"
B. Girod et al., "Motion-compensating Field Interpolation from Interlaced and Non-interlaced Grids", 2nd International Technical Symposium on Optical and Electro-Optical Applied Science and Engineering: Image Processing Symposium, Cannes, Dec. 1985, pp. 1-8
M. Pecot et al., "Compatible Coding of Television Images, Part 1: Coding Algorithm", Image Communication Journal (Speech Issue on HDTV), pp. 1-18
G. W. Meeker, "High Definition and High Frame Rate Compatible N.T.S.C. Broadcast Television System", IEEE Transactions on Broadcasting, vol. 34 (1988), pp. 313-322
T. Fukinuki et al., "Extended Definition TV Fully Compatible with Existing IEEE Transactions on Communications", vol. COM-32 (1984), pp. 948-953
T. Fukinuki et al., "Extended Definition TV Fully Compatible with Existing Standards--Proposal and Experimental Results", 1984 Winter TV Conference, pp. 354-367
W. F. Schreiber et al., "A Compatible High-Definition Television System Using the Noise-Margin Method of Hiding Enhancement Information", SMPTE Journal, Dec. 1989, pp. 873-879
F. W. P. Vreeswijk et al., "An HD-MAC Coding System", in: L. Chiariglione, ed., Signal Processing of HDTV, Elsevier Science Publishers, B. V. (North Holland), 1988, pp. 137-143
Y. Ninomiya et al., "An HDTV Broadcasting System Utilizing a Bandwidth Compression Technique-MUSE", IEEE Transactions on Broadcasting, BC-33 (4), Dec. 1987, pp. 130-160
International Organisation for Standardisation, ISO-IEC/JTC1/SC29/WG11, Coded Representation of Picture and Audio Information, Document AVC-260, May 1992, pp. 1, 25-29, 38-40, 6