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Class Information
Number: 348/913
Name: Television > Letterbox (e.g., display 16:9 aspect ratio image on 4:3 screen)
Description: Art collection of television systems having means for displaying a complete wide aspect ratio image on a narrow aspect ratio screen using the entire screen width and a portion of the screen height.

Patents under this class:
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Patent Number Title Of Patent Date Issued
8035666 Dynamic backlight adaptation for black bars with subtitles Oct. 11, 2011
7952645 Video processing apparatus and mobile terminal apparatus May. 31, 2011
7538821 Display apparatus to detect letter-box boundary and method of displaying image using the same May. 26, 2009
7480011 Video processing chip capable of adjusting aspect ratio and method of displaying an image thereby Jan. 20, 2009
7450177 Apparatus and method to control caption positioning Nov. 11, 2008
7440033 Vector based motion compensation at image borders Oct. 21, 2008
7262812 Method for fine tuned automatic zoom Aug. 28, 2007
7262811 System and method for automatic zoom Aug. 28, 2007
7239354 Digital image demodulating apparatus Jul. 3, 2007
7224401 System and method of dynamic interface placement based on aspect ratio May. 29, 2007
7129992 Method and system for video display with automatic reframing Oct. 31, 2006
7084924 Method, apparatus, and system for displaying widescreen video images on standard video displays Aug. 1, 2006
7079192 Letter box line blackener for the HDTV/conventional-analog hybrid system Jul. 18, 2006
7057640 Method and apparatus for dynamic burnout imprinting protection with shift correction Jun. 6, 2006
6678009 Adjustable video display window Jan. 13, 2004
6593939 Image display device and driver circuit therefor Jul. 15, 2003
6525778 Image display unit for displaying undistorted images having different aspect ratios Feb. 25, 2003
6504706 Presentation device Jan. 7, 2003
6384864 Letter-box filtering circuit and method using the same May. 7, 2002
6340992 Automatic detection of letterbox and subtitles in video Jan. 22, 2002
6331862 Image expansion display and driver Dec. 18, 2001
6330037 Picture signal processing method for processing a picture signal containing information including main picture portion and non-picture portions Dec. 11, 2001
6262772 Method and apparatus for preventing display screen burn-in Jul. 17, 2001
6262779 Display apparatus with circuit expanding horizontal retrace interval of horizontal deflection current Jul. 17, 2001
6259479 Letterbox filter apparatus and method Jul. 10, 2001
6226046 Video signal discriminating circuit and television receiver May. 1, 2001
6208385 Letterbox image detection apparatus Mar. 27, 2001
6188449 Semiwide-screen television receiver Feb. 13, 2001
6157410 Processing and display of images retrieved from digital still image files generated from digital moving images Dec. 5, 2000
6157414 Image display apparatus for enlargement or reduction of an image using an interpolation process Dec. 5, 2000
6115072 16:9 aspect ratio conversion by letterbox method for an MPEG image Sep. 5, 2000
6084637 Decoding and displaying device for coded picture data Jul. 4, 2000
6064444 Picture processing apparatus and processing method May. 16, 2000
RE36456 Video signal conversion method for displaying a 4:3 video signal on a 16:9 screen Dec. 21, 1999
5973749 Letter-box screen detection apparatus Oct. 26, 1999
5949494 Aspect ratio discrimination apparatus and image display apparatus including the same Sep. 7, 1999
5881205 Video image processing to product recorded media Mar. 9, 1999
5844624 Television receiver Dec. 1, 1998
5825427 Image display system Oct. 20, 1998
5805234 Television receiver Sep. 8, 1998
5760837 Video signal compression apparatus for horizontal compression of a video signal Jun. 2, 1998
5754243 Letter-box transformation device May. 19, 1998
5734434 Non-linear aspect ratio adaptation Mar. 31, 1998
5719636 Letter-box screen detection apparatus Feb. 17, 1998
5715010 Video signal compression apparatus for horizontal compression of a video signal Feb. 3, 1998
5703653 Video signal compression apparatus for horizontal compression of a video signal Dec. 30, 1997
5699123 Television receiver with an adjustable frame size Dec. 16, 1997
5686970 Average luminance level detection apparatus and aspect ratio auto-discrimination apparatus for a television signal using the same Nov. 11, 1997
5657082 Imaging apparatus and method using interpolation processing Aug. 12, 1997
5614956 Television receiver Mar. 25, 1997

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