Title:
BELL FILTER CIRCUIT
Document Type and Number:
Japanese Patent JPH03112209
Kind Code:
A
Abstract:
PURPOSE: To always reproduce an accurate color by varying passing band characteristic corresponding to the input source of a video signal.
CONSTITUTION: A composite video signal SRF taken out from an RF signal received with an antenna and a composite video signal SEXT directly inputted from the outside are inputted to an analog switch 10, and either is outputted to a bell filter circuit 11 corresponding to a switching signal SSW. Also, the switching signal SSW is inputted to the circuit 11, which varies the passing band characteristic of the circuit.
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Inventors:
YONEDA YUTAKA
Application Number:
JP25036189A
Publication Date:
May 13, 1991
Filing Date:
September 26, 1989
Export Citation:
Assignee:
SHARP KK
International Classes:
H04N11/18; H03H7/12; H04N9/64; (IPC1-7): H03H7/12; H04N9/64; H04N11/18
Attorney, Agent or Firm:
Shizuo Sano