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Title:
VIDEO SIGNAL PROCESSING APPARATUS
Document Type and Number:
Japanese Patent JP2003244722
Kind Code:
A
Abstract:

To provide a video signal processing apparatus capable of obtaining stable image quality independently of a tracking error of a tuner circuit.

The video signal processing apparatus is provided with: a burst signal extraction means for extracting a burst signal from a video signal being an output of a video amplifier circuit 24 and comprising a synchronizing separator circuit 31, a waveform shaping circuit 32, a band amplifier circuit 33, and a burst separation circuit 34; a level conversion means for converting various in the burst signal into a DC voltage and comprising an ACC detection/amplifier circuit 35, and the DC voltage is fed back to a cathode of an input turning variable capacitance diode configuring a frequency characteristic correction circuit of an input tuning circuit 11 via a control circuit 36.


Inventors:
OIWA KOJI
Application Number:
JP2002044954A
Publication Date:
August 29, 2003
Filing Date:
February 21, 2002
Export Citation:
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Assignee:
SHARP KK
International Classes:
H03G1/00; H03J3/08; H04N5/44; H04N5/205; H04N9/68; H04N5/50; H04N9/455; (IPC1-7): H04N9/68; H04N5/205; H04N5/44
Attorney, Agent or Firm:
Yoshiro Kurauchi