Facsimile and static presentation processing – Static presentation processing – Attribute control
Patent
1984-10-25
1987-04-21
Shepperd, John W.
Facsimile and static presentation processing
Static presentation processing
Attribute control
250214C, 354428, 354430, 356222, 356223, H04N 973
Patent
active
046600752
ABSTRACT:
A color information detecting device comprising a plurality of color detecting apparatus for detecting respective different color lights from each other, converting apparatus for producing an output in non-linear relation to the input signal, changeover apparatus for selectively applying the outputs of the color detecting apparatus to the converting apparatus, apparatus for coinciding a number of successive outputs of the converting apparatus, and computing apparatus for computing the coincided signals from the coincidence apparatus. The device also includes a first constant current source for applying current of a prescribed intensity and a second constant current source for supplying current of another intensity equal to the prescribed intensity times the intensity of the current supplied from the first source which are included so that another mode can operate. The outputs of the first and second constant current sources are selectively applied to the converting apparatus. These features have the advantage of achieving simplicity of the construction of the structure and stabilization of the temperature characteristics.
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patent: 4574303 (1986-03-01), Hashimoto et al.
Hashimoto Seiji
Sakai Shinji
Canon Kabushiki Kaisha
Shepperd John W.
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