Method for obtaining signals in electronic devices by means of i

Details Method for obtaining signals in electronic devices by means of i Method for obtaining signals in electronic devices by means of i

1997-03-17

2000-06-06

Lee, Michael H.

Television

Video display

Projection device

348807, 31536813, H04N 322, H04N 928

Patent

active

060725443

ABSTRACT:
A method is proposed for obtaining signals in electronic devices by means of interpolation between interpolation point values (W0 to W12), the interpolation point values (W0 to W12) being distributed linearly over a region. A number of interpolation values are calculated in each case at a specific interval between the interpolation point values (W0 to W12). The calculation of the interpolation values is then performed as follows: Firstly, a correction step value (a to 1) is determined in each case for an interval bounded by two interpolation point values (W0 to W12) by linear interpolation between these interpolation point values (W0 to W12) . These correction step values (a to 1) are calculated for all intervals. The calculation of the interpolation value in the current interval is then performed such that apart from the correction step value (a to 1) for the current interval use is also made at least of the correction step value (a to 1) of the preceding and/or of the following interval. As a result, the interpolation curve is laid smoothly through the intervals, and pronounced discontinuities in the gradient of the interpolation curve are avoided.

REFERENCES:
patent: 5398083 (1995-03-01), Tsujihara et al.
patent: 5463427 (1995-10-01), Kawashima
Copy of Search Report.
Stanke, Gerd Schnelle geometrische Bildkorrektur unit dem parallelen Prozzessor des BVS A 6472 Bild und Ton 43, 1990, 2, S.48,49.
Shiomi, Makoto et al. A Fully Digital Convergence System for Projection TV, In IEEE Tranaction on Consumer Electronics, vol. 36, No. 3, Aug. 1990 S 45-452.

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