Facsimile and static presentation processing – Facsimile – Recording apparatus
Patent
1984-10-15
1986-01-28
Rubinson, Gene Z.
Facsimile and static presentation processing
Facsimile
Recording apparatus
H04N 314
Patent
active
045675252
ABSTRACT:
A solid-state image sensing device such as an interline-transfer type charge coupled device generates signal charges in response to incident light to produce an image signal. The CCD output signal includes a mixed reset pulse component from a reset pulse driver to the IT-CCD, as well as an image signal component corresponding to the signal charges. When the IT-CCD contains a defective picture element, position data of the defective picture element is stored into an address memory. An amplitude controller detects an increment of a signal level corresponding to a dark current generated at the defective picture element, and temporarily decreases the amplitude of the reset pulse only when the image signal is output from the defective picture element. In this way, the mixed reset pulse contained in the image signal output from the defective picture element is reduced, thereby subtracting the signal level increment from the CCD output signal produced from the defective picture element.
REFERENCES:
patent: 3944816 (1976-03-01), Harada
patent: 4167754 (1979-09-01), Nagumo et al.
patent: 4167755 (1979-09-01), Nagumo et al.
patent: 4435730 (1984-03-01), Bendell et al.
patent: 4499497 (1985-02-01), Levine
Endo Yukio
Harada Nozomu
Yoshida Okio
Brinich Stephen
Kabushiki Kaisha Toshiba
Rubinson Gene Z.
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