US Patent No: 5,138,449

Number of patents in Portfolio can not be more than 2000

Enhanced definition NTSC compatible television system

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Abstract

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This invention relates to methods for transmitting and receiving high resolution television pictures which utilizes the present channel bandwidths and is compatible with present day receivers. Four fields are utilized to produce two interlaced frames. The camera is adjusted so that each scene is converted into four fields of two frames and a signal is sent to inform the receiver to interlace the two frames. Compatibility is obtained since in a 525 line receiver two of the fields are displayed on top of the other two fields.

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Patent Owner(s)

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Kerpchar, Michael 17 Nokomis Ave., Lake Hiawatha, NJ 07034 1 45

Cited Art Landscape

Patent Info (Count) # Cites Year
 
NEW YORK INSTITUTE OF TECHNOLOGY, WHEATLEY RD., OLD WESTBURY, N A CORP. OF NY (1)
4,800,426 Method and system for transmission and reception of high definition 56 1987
 
SONY CORPORATION (1)
4,451,848 Television receiver including a circuit for doubling line scanning frequency 14 1981
 
TEKTRONIX, INC. (1)
4,251,835 Image-forming system for obscuring poster lines 8 1978
 
Other [Check patent profile for assignment information] (1)
4,531,152 Television system and method 12 1981

Patent Citation Ranking

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Patent Info (Count) # Cites Year
 
SHARP KABUSHIKI KAISHA (24)
7,064,740 Backlit display with improved dynamic range 63 2001
7,164,284 Dynamic gamma for a liquid crystal display 6 2004
8,395,577 Liquid crystal display with illumination control 0 2004
7,872,631 Liquid crystal display with temporal black point 7 2004
7,777,714 Liquid crystal display with adaptive width 2 2004
7,612,757 Liquid crystal display with modulated black point 2 2004
7,532,192 Liquid crystal display with filtered black point 23 2004
7,505,018 Liquid crystal display with reduced black level insertion 5 2004
8,378,955 Liquid crystal display backlight with filtering 0 2004
7,573,457 Liquid crystal display backlight with scaling 24 2004
7,737,936 Liquid crystal display backlight with modulation 6 2004
7,675,500 Liquid crystal display backlight with variable amplitude LED 0 2004
7,714,830 Liquid crystal display backlight with level change 0 2004
7,623,105 Liquid crystal display with adaptive color 6 2004
7,898,519 Method for overdriving a backlit display 2 2005
8,050,511 High dynamic range images from low dynamic range images 2 2005
8,050,512 High dynamic range images from low dynamic range images 1 2005
7,525,528 Technique that preserves specular highlights 7 2005
7,342,592 System for reducing crosstalk 0 2006
8,121,401 Method for reducing enhancement of artifacts and noise in image color enhancement 0 2006
7,853,094 Color enhancement technique using skin color detection 9 2006
7,505,027 Backlit display with improved dynamic range 1 2007
7,505,028 Backlit display with improved dynamic range 1 2007
7,499,017 Backlit display with improved dynamic range 2 2007
 
FERGASON PATENT PROPERTIES, LLC (11)
5,537,256 Electronic dithering system using birefrigence for optical displays and method 55 1994
5,572,341 Electro-optical dithering system using birefringence for optical displays and method 44 1995
5,715,029 Optical dithering system using birefringence for optical displays and method 60 1995
6,184,969 Optical display system and method, active and passive dithering using birefringence, color image superpositioning and display enhancement 100 1997
6,243,055 Optical display system and method with optical shifting of pixel position including conversion of pixel layout to form delta to stripe pattern by time base multiplexing 177 1998
6,816,141 Optical display system and method, active and passive dithering using birefringence, color image superpositioning and display enhancement with phase coordinated polarization switching 124 2000
8,243,004 Apparatus and method for preparing, storing, transmitting and displaying images 2 2004
7,352,347 Optical display system and method, active and passive dithering using birefringence, color image superpositioning and display enhancement with phase coordinated polarization switching 20 2004
7,843,416 Optical display system and method, active and passive dithering using birefringence, color image superpositioning and display enhancement with phase coordinated polarization switching 0 2007
7,843,417 Optical display system and method, active and passive dithering using birefringence, color image superpositioning and display enhancement with phase coordinated polarization switching 0 2007
7,843,418 Optical display system and method, active and passive dithering using birefringence, color image superpositioning and display enhancement with phase coordinated polarization switching 0 2007
 
TAMIRAS PER PTE. LTD., LLC (6)
6,108,041 High-definition television signal processing for transmitting and receiving a television signal in a manner compatible with the present system 73 1997
6,014,182 Film source video detection 57 1997
6,201,577 Film source video detection 39 1999
6,859,237 Film source video detection 23 2003
7,522,221 Interlaced video field motion detection 4 2004
8,120,710 Interlaced video field motion detection 1 2008
 
ENTROPIC COMMUNICATIONS, INC. (1)
7,961,251 Method and apparatus for conversion of video formats to 120 Hz 4 to 1 interlaced formats 1 2002
 
NEC CORPORATION (1)
5,638,132 Image sensing and display system and image pick up and display system 2 1994
 
SAGE, INC. (1)
6,580,463 Film source video detection 25 2001
 
SOLAE, LLC (1)
7,556,836 High protein snack product 0 2004