Television – Format conversion
Patent
1997-03-12
1999-11-16
Chin, Tommy P.
Television
Format conversion
36472416, 386131, H04N 591
Patent
active
059867159
ABSTRACT:
(M-N) 0 data are inserted for every N data of the f.sub.SL input data by an interpolation circuit 20 for generating f.sub.SH rate data, while filter coefficients are sequentially generated by M coefficient generators 30A to 30D at the f.sub.SH rate. A register postfix type transversal filter 40 effectuates up rate conversion of N:M (N<M) of generating f.sub.SH rate output data from f.sub.SL rate input data. The transversal filter 40 includes M multipliers 41A to 41D for multiplying the f.sub.SH rate data generated by the interpolation circuit 20 with the filter coefficients sequentially applied by the coefficient generators 30A to 30D and each (M-1) delay circuits 42A to 42C and additive units 43A to 43C for delaying product outputs of the multipliers 41A to 41D by unit time delay and summing the delayed product output together.
REFERENCES:
patent: 4609941 (1986-09-01), Carr et al.
patent: 4748578 (1988-05-01), Lagadec et al.
patent: 4777612 (1988-10-01), Tomimitsu
patent: 5272524 (1993-12-01), Nagumo et al.
patent: 5307156 (1994-04-01), Yamamoto et al.
patent: 5335194 (1994-08-01), Clayton et al.
patent: 5408266 (1995-04-01), Ikeyama et al.
patent: 5461604 (1995-10-01), Hasegawa
patent: 5475436 (1995-12-01), Watanabe et al.
patent: 5517247 (1996-05-01), Correa et al.
patent: 5517248 (1996-05-01), Isoda
John G. Proakis et al. [Introduction to Digital Signal Processing], 1989, MacMillan Publishing Co., New York *paragraph 8.5.4*.
Ikeyama Hiromasa
Kihara Taku
Nohda Shigetoshi
Chin Tommy P.
Frommer William S.
Lee Y.
Sony Corporation
LandOfFree
Rate converter using a register postfix type transversal filter does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Rate converter using a register postfix type transversal filter, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Rate converter using a register postfix type transversal filter will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1330828