Pulse or digital communications – Bandwidth reduction or expansion – Television or motion video signal
Patent
1999-07-15
2000-05-09
Le, Vu
Pulse or digital communications
Bandwidth reduction or expansion
Television or motion video signal
348384, 348390, 348419, 386109, 386111, 386112, H04N 712, H04N 726, H04B 166
Patent
active
06061403&
ABSTRACT:
Method, apparatus and computer program product are disclosed for selectively reducing the bandwidth of real-time video data for transmission on a bus having varying bandwidth, while minimizing perceptible loss of picture quality. After detecting an overflow condition within a buffer coupled to a bus, video data to be written to the buffer is discarded until a prior pending request for transmission of a pending block of video data from the buffer is granted and begun. After beginning the transmitting, the discarding of data is discontinued and new video data is written into the buffer. A next bus request is made for transmission of all remaining data in the buffer stored prior to detecting the overflow condition. The amount of discarded data in the line is monitored and used to determine an address for a new block of data stored after the discontinuity in the line of video data. Temporal redundancies between frames of a video image is employed to fill in the discontinuity in the line of video data by using correspondingly positioned data in a corresponding line of a prior frame or field.
REFERENCES:
patent: 4800431 (1989-01-01), Deering
patent: 5023718 (1991-06-01), Soloff
patent: 5253078 (1993-10-01), Balkanski et al.
patent: 5263138 (1993-11-01), Wasserman et al.
patent: 5341175 (1994-08-01), Koz
patent: 5546543 (1996-08-01), Yang et al.
patent: 5576765 (1996-11-01), Cheney et al.
patent: 5659634 (1997-08-01), Yeh et al.
patent: 5680151 (1997-10-01), Grimm et al.
patent: 5706451 (1998-01-01), Lightbody et al.
patent: 5787472 (1998-07-01), Dan et al.
patent: 5799017 (1998-08-01), Gupta et al.
patent: 5812144 (1998-09-01), Potu et al.
patent: 5812789 (1998-09-01), Diaz et al.
patent: 5818967 (1998-10-01), Bhattacharjee et al.
patent: 5819111 (1998-10-01), Davies et al.
patent: 5854640 (1998-12-01), North et al.
patent: 5872939 (1999-02-01), Ramsey et al.
patent: 5925115 (1999-07-01), Ponte
patent: 5986714 (1999-11-01), Marino
International Businbess Machines Corporation
Le Vu
LandOfFree
Computer program product for selectively reducing bandwidth of r does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Computer program product for selectively reducing bandwidth of r, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Computer program product for selectively reducing bandwidth of r will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1072346