Television camera having a noise reduction and vertical edge cor

Details Television camera having a noise reduction and vertical edge cor Television camera having a noise reduction and vertical edge cor

1993-08-10

1995-08-15

Yusko, Donald J.

Television

Camera, system and detail

Combined image signal generator and general image signal...

348241, 348606, H04M 314

Patent

active

054423937

ABSTRACT:
An interlacing television camera apparatus includes a solid-state imaging device, drive unit, delay unit, and vertical-edge correcting unit. The drive unit drives the imaging unit to simultaneously output, in a first field, a main video signal and a sub-video signal i.e., even and odd numbered lines, respectively, in a first field from the device, which represent a charge accumulated in a pixel located on a scanning line of the first field and a charge accumulated in a pixel located on a scanning line of a second field next to the first field, respectively. Next, the drive unit drives the imaging device to simultaneously output, in the second field, a main video signal and a sub-video signal in a second field from the device, which represent the charge accumulated in the pixel located on the scanning line of the second field and a charge accumulated in a pixel located on a scanning line of a first field next to the second field, respectively. The delay unit delays the first sub-video signal in the first field by one horizontal scanning period to produce a second sub-video signal, and delays the first sub-video signal in the second field by one horizontal scanning period to produce a second sub-video signal. The vertical-edge correcting unit processes the first sub-video signal and the second sub-video signal in each field and adds a result of the processing to the main video signal, to correct a vertical edge of the main video signal.

REFERENCES:
patent: 4574309 (1986-03-01), Arisawa et al.
patent: 5040071 (1991-08-01), Stevens
patent: 5177600 (1993-01-01), Monta et al.

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