公开(公告)号：US3784832A

公开(公告)日：1974-01-08

申请号：US3784832D

申请日：1973-01-19

Applicant: RANK ORGANISATION LTD

Inventor： SEWELL B

IPC: D04B15/78 ,  D03D20060101 ,  D04B15/84 ,  F04D19/04 ,  G02B26/10 ,  G06K7/12 ,  G01J3/34

CPC classification number: F04D19/04 ,  G06K7/12

Abstract: Apparatus for avoiding ambiguity in a quantised signal representing a pattern which is scanned by an optical detector. The apparatus operates to scan the pattern to be represented and to produce a quantised signal each quantum of which represents the major colour in each scanning element of the pattern scanned. Sampling means are provided which sample the binary signal produced by the scanning means at a rate higher than the rate at which the signal is ultimately to be quantised and the output from the sampling means controls a gating circuit which operates to prevent the signal representing the pattern from changing from a representation of one colour to a representation of another unless a predetermined number of the samples all represent one colour. This avoids any indeterminacy in the quantised signal at colour junctions where there are two or more colours present in an element being scanned, and no colour is sufficiently predominant for the detectors to unambiguously provide an output representing only that colour.

Abstract translation: 用于避免表示由光学检测器扫描的图案的量化信号中的歧义的装置。 该装置用于扫描要表示的图案，并产生量化信号，每个量子表示所扫描图案的每个扫描元件中的主要颜色。 提供了采样装置，其以比信号最终被量化的速率高的扫描装置产生的二进制信号进行采样，并且来自采样装置的输出控制门控电路，其操作以防止表示图案的信号 从一种颜色的表示改变为另一种颜色的表示，除非预定数量的样本都表示一种颜色。 这避免了在被扫描的元件中存在两种或更多种颜色的彩色结点处的量化信号中的任何不确定性，并且没有颜色足够主导以使检测器明确地提供仅表示该颜色的输出。