The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Date of Patent:
Aug. 13, 2002

Filed:

Jun. 11, 2001
Applicant:
Inventors:

Toshimitsu Watanabe, Yokohama, JP;

Masahisa Tsukahara, Fujisawa, JP;

Nobuaki Kabuto, Kunitachi, JP;

Assignee:

Other;

Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H04N 3/27 ;
U.S. Cl.
CPC ...
H04N 3/27 ;
Abstract

When a video signal is double-speed processed by the first device, a slight vertical deflection process is performed for redundant similar scan lines by the second device, and any slight deflection in the second device is controlled by the first device to enable setting so as to display images with excellent resolution. The first device generates a discrimination signal to designate interlaced scanning and flag a need for vertical scan-line deflection, and such signal is provided to the second device such that the second device can always appropriately determine need for vertical scan-line deflection. Through monitoring for the discrimination signal, an image display apparatus can prevent vertical resolution from deteriorating when video signals possibly requiring vertical line-shifting are inputted from an external source, and can prevent vertical resolution from deteriorating when displaying images of video signals having different systems within different areas on the same screen.


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