Patent ID: 6020922
Filing Date: 2000-02-01
Classification: H04N

Abstract:
A vertical line multiplication method for multiplying a number of vertical lines to transform a first broadcasting type signal, which is imaged by use of four charge coupled devices (CCDs) including a G1 CCD, a G2 CCD, an R CCD and a B CCD, into a second broadcasting type signal having a higher resolution than that of the first broadcasting type signal, comprising the steps of:(a) writing G1 channel data of a 1H period from the G1 CCD and reading out the written G1 channel data of the 1H period at twice a speed of a writing speed of the G1 channel data, wherein the reading out of the written 1H period data is initiated when 0.5H period G1 channel data is completely written;(b) writing G2 channel data of a 1H period from the G2 CCD and then reading out the written G2 channel data at twice a speed of a writing speed of the G2 channel data; and(c) selecting the G1 and G2 channel data read out in said steps (a) and (b) alternately for predetermined time periods, respectively, to output the selected signals sequentially as a wide bandwidth G signal.