Television – Bandwidth reduction system – Data rate reduction
Patent
1996-03-01
1998-08-25
Chin, Tommy P.
Television
Bandwidth reduction system
Data rate reduction
348397, 348399, 348438, H04N 730, H04N 732
Patent
active
057987955
ABSTRACT:
A method is set forth for encoding and decoding a video signal, including the following steps: encoding the signal, the encoding including separating the signal into a plurality of spatial frequency bands at different frame rates, and temporally pre-filtering at least one of the bands with a pre-filtering circuit; and decoding the encoded signal, the decoding preferably including temporally post-filtering the at least one band, and combining the bands. In a preferred embodiment temporal pre-filtering is low-pass temporal filtering with a filter cut-off in the range 1.25 to 1.75 times the temporal Nyquist limit for the frame rate of the at least one band. The temporal post-filtering is preferably low pass temporal filtering with a cut-off near the Nyquist limit.
REFERENCES:
patent: 4517597 (1985-05-01), Glenn
patent: 4628344 (1986-12-01), Glenn
patent: 4636857 (1987-01-01), Achiha et al.
patent: 4652909 (1987-03-01), Glenn
patent: 4701783 (1987-10-01), Glenn
patent: 4800426 (1989-01-01), Glenn
patent: 5128754 (1992-07-01), Dhein
patent: 5159453 (1992-10-01), Dhein et al.
patent: 5202760 (1993-04-01), Tourtier et al.
patent: 5235420 (1993-08-01), Gharavi
patent: 5235421 (1993-08-01), Yang
patent: 5325125 (1994-06-01), Naimpally et al.
patent: 5382979 (1995-01-01), Mun
patent: 5412741 (1995-05-01), Shapiro
patent: 5446495 (1995-08-01), Tourtier et al.
patent: 5469517 (1995-11-01), Ohta
patent: 5561463 (1996-10-01), Thomas et al.
Glenn et al. "Simple Scalable Video Compression Using 3-D Subband Coding", presented at the SMPTE Advanced Television and Electronic Imaging Conference in San Francisco, CA, on Feb. 11, 1995, and published in the Mar., 1996 SMPTE Journal.
Glenn et al. "Subband Coding Compression System For Program Production", presented at the 136th SMPTE Technical Conference in Los Angeles, CA, in Oct., 1994.
W.E. Glenn, "Digital Image Compression Based On Visual Perception And Scene Properties", Presented at the 133rd SMPTE Technical Conference in Los Angeles on Oct. 27, 1991, and published in the May, 1993, SMPTE Journal.
W. Glenn, K. Glenn, C. Bastian, "Imaging System Design Based On Psychophysical Data", Proc. of SID, vol. 26/I, pp. 71-78 (1985).
"Visual Psychological Factors as Applicable to the Design and Development of Video Systems for Use in Space", NYIT Final Rept. to NASA, (May 1989).
R.C. Gonzales et al., "Digital Image Processing" Addison-Wesley, pp. 80-83 (1987).
E. Dubois et al. "Three Dimensional Spectrum and Processing of Digital NTSC Color Signals", SMPTE J, (Apr. 1982).
B. Wendlund et al. "On Picture Quality of Some TV Signal Processing Techniques", SMPTE J, (Oct. 1984).
W.E. Glenn, "HDTV Compatible Transmission System", National Association of Broadcasters, Apr., 1986.
W.E. Glenn, "Compatible Terrestrial HDTV Transmission", NAB Engineering Conference Proceedings, Apr., 1986.
M.A. Insnardi et al., "Advanced Compatible Television, A Progress Report" SMPTE Journal, Jul., 1989.
W.F. Schreiber et al., "Reliable EDTV/HDTV Transmissiion in Low-Quality Analog Channels" SMPTE Journal, Jul., 1989.
Chang et al, "Scalable Video Coding Using 3-D Subband Velocity Coding and Multriate Quantization", IEEE, 1993.
Mokry et al, "Bandwidth Reduction for HDTV Transmission-Alternatives and Subjective Results", IEEE 1990.
Taubman et al, "Rate and Resolution Scalable Video and Image Compression with Subband Coding", IEEE 1993.
Tsunashima et al, "A Scalable Motion-compensated Subband Image Coder", IEEE 1994.
Wu et al, "Scalable Implementations Scheme for Multirate FIR Filters and Its Applications in Efficient Design of Subband Filter Banks", IEEE 1996.
Mlynek et al, "VLSI for Digital Television", IEEE 1995.
Tan et al, "A Frequency Scalable Coding Scheme Employing Pyramid and Subband Techniques", IEEE 1994.
Hsu et al, "Scalable HDTV Coding With Motion Compensated Subband and Transform Coding", IEEE 1995.
Singh et al, "Multidimensional Quantizers for Scalable Video Compression", IEEE 1993.
Dhein Robert L.
Glenn William E.
Guediri Fouad
Monteiro Pedro
Moreno Adalberto
Chin Tommy P.
Florida Atlantic University
Le Vu
Novack Martin M.
LandOfFree
Method and apparatus for encoding and decoding video signals does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Method and apparatus for encoding and decoding video signals, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method and apparatus for encoding and decoding video signals will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-39450