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Patent Searching and Data


Title:
PICTURE SIGNAL CORRECTING CIRCUIT FOR FACSIMILE DEVICE
Document Type and Number:
Japanese Patent JPS5838069
Kind Code:
A
Abstract:

PURPOSE: To improve reproducibility of halftone photograph part in a recorded picture by performing necessary line width correction of characters and density adjustment of halftone part independently.

CONSTITUTION: A picture element correcting circuit 13 for characters and a picture element correcting circuit 14 for halftone part are provided in parallel in a picture signal correcting circuit, and halftone part is discriminated by a halftone detecting circuit, and otput of the picture element correcting circuit 13 for characters and output of the picture element corecting circuit 14 for halftone part are selectively outputted in a selecting circuit 15 by output (l) of the halftone detecting circuit. Accordingly, picture element correction for characters and picture element correction for halftone part can be performed is separate correcting circuit in a recorded picture.


Inventors:
TANAHASHI IWAO
Application Number:
JP13644481A
Publication Date:
March 05, 1983
Filing Date:
August 31, 1981
Export Citation:
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Assignee:
NIPPON ELECTRIC CO
International Classes:
H04N1/40; (IPC1-7): H04N1/40
Domestic Patent References:
JPS50140209A1975-11-10
JPS5349935A1978-05-06
Attorney, Agent or Firm:
Uchihara Shin