Title:
PICTURE SIGNAL CORRECTING DEVICE
Document Type and Number:
Japanese Patent JPH01140859
Kind Code:
A
Abstract:
PURPOSE:To facilitate to settle the pulse width correction of a picture signal at a requested value by selecting an output for obtaining prescribed recording picture element width from the outputs of plural delay circuits with prescribed delaying characteristics. CONSTITUTION:A picture signal is inputted to a selection circuit 12 directly and through an inversion circuit 11, and the output of it is inputted to the delay circuit 1A with the delaying characteristic of t time corresponding to a requested minimum correction picture element width and the plural delay circuit 2A-nA with the delaying characteristics different by every t time. One of the outputs of these delay circuits 1A-nA is selected and outputted by the selection circuit 13 according to a correction picture element width designate signal. In a logical integrated circuit 14, a corrected picture signal is outputted from the output signal of the selection circuits 12, 13, and an output picture signal is outputted through the inversion circuit 15 and the selection circuit 16.
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Inventors:
TANAHASHI IWAO
Application Number:
JP29876987A
Publication Date:
June 02, 1989
Filing Date:
November 26, 1987
Export Citation:
Assignee:
NEC CORP
International Classes:
H04N1/405; H04N1/40; (IPC1-7): H04N1/40
Attorney, Agent or Firm:
Yutaro Kumagai
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