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Class 348/436.1 - Including use of a subcarrier


Subclass of Class 348 - Television
Definition: Subject matter wherein the additional signal is modulated
No. of patents: 31
Last issue date: 05/06/2008


NumberTitleIssue Date
7369181Method of removing noise from digital moving picture data
Provided is a method of removing noise from digital moving picture data reducing the number of frames used in a temporal filtering operation and able to detect motion between frames easily. The method comprises a method of spatial filtering, a method of temporal fil...
05/06/2008
7139326Image-canceling quadrature modulator and method
Canceling images in a quadrature modulator includes frequency shifting the baseband signal and images; filtering the frequency shifted baseband signal and images; phase and frequency shifting the baseband signal and images; filtering the phase and frequency shifted ...
11/21/2006
7012648Image conversion method and image conversion apparatus
An image conversion apparatus includes a progressive scanning converter for receiving an input image as a first interlaced scanning image having a field frequency of m (m: integer not less than 2) fields/sec, and converting the first interlaced scanning image into a...
03/14/2006
6947060Image forming apparatus, electron beam apparatus, modulation circuit, and image-forming apparatus driving method
An image forming apparatus which performs pulsewidth modulation with a pulsewidth set by counting a clock. Especially, for grayscale level correction by setting the frequency of the clock, the periodic clock is counted, and an output pattern is changed in accordance...
09/20/2005
6141530System and method for digital electronic cinema delivery
A novel system and method for secure electronic delivery of motion pictures in digital format to many end users simultaneously. In particular, the system comprises a headend system and a theater system. The headend system comprises a baseband processing s...
10/31/2000
5696560Motion picture distribution system
An improvement to a motion picture distribution system providing a high quality motion picture system compatible with pre-existing NTSC systems and improving horizontal and vertical detail. The improvement includes a television camera having an anamorphic...
12/09/1997
5534932Letterbox television system
In a method of transmitting an extended television signal comprising a wide aspect ratio picture between two horizontal bars so as to form a standard aspect ratio picture, in which vertical resolution enhancement signals are transmitted to improve the ver...
07/09/1996
5357283Reflected modulated television system
A television system, the composite color television signal (EM (t)) whereof is generated using reflected modulated signals (E3 (t)), wherein at the transmitting side video signals (E1-1 (t), E1-2 (t)) are used t...
10/18/1994
5142364High resolution color television system
A high resolution color television system, in the transmitting device of which part of pixels are thinned out in both horizontal and vertical directions and the remaining pixels are vertically gathered in the central portion of the image screen to form an...
08/25/1992
5083196Chrominance processing apparatus for a compatible widescreen television system
In a widescreen signal encoding system for a television-type signal, side panel chrominance information is not subjected to time compression in an overscan region such as a horizontal overscan region containing time compressed low frequency side panel lum...
01/21/1992
5070396Compatible widescreen television system
In a widescreen signal encoding system for a television-type signal, side panel chrominance information is conveyed in double sideband form on an auxiliary subcarrier having a field inverting phase relative to the phase of a standard chrominance subcarrie...
12/03/1991
5055916Chrominance encoding for a widescreen television system
A widescreen television system includes an auxiliary subcarrier modulated with left and right side panel luminance and chrominance components. The chrominance modulating component represents the difference between the average side panel chrominance inform...
10/08/1991
5053858Chrominance signal processing appartus for widescreen television system
In a transmitter/encoder system for processing a widescreen television signal having main panel and side panel information, side panel luminance information and side panel "Q" color difference information modulate one phase of a quadrature modulated 3.58 ...
10/01/1991
5031030Video signal encoded with additional detail information
In a system for encoding and decoding high frequency video information, an input video signal includes a high frequency band containing information to be encoded, and a lower frequency band. The frequency spectrum of the input video signal is folded aroun...
07/09/1991
5014116Color television system
A wide aspect ratio screen color television system, such as a 16:9 aspect ratio screen television system, includes a signal generating circuit for generating the wide aspect ratio screen color television signal with a predetermined two-dimensional frequen...
05/07/1991
5003377Extended definition television systems
Methods and systems for adding additional information to broadcast motion picture signals so that an advanced receiver can decode that information to provide improved picture quality, while a standard receiver will display an image with minimally visible ...
03/26/1991
5001550Quadruplex encoder and decoder for EDTV system
By employing different independent polarity codes to polarity-modulate respective quads of averaged values in the vertical-temporal plane of luma, chroma, sidepanel and enhanced-luma components in the mid-frequency and/or high-frequency split-bands of a 4...
03/19/1991
4949167Widescreen television signal processing system with center and side panel image resolution uniformity
An NTSC compatible widescreen EDTV system encodes and decodes a television signal comprising (1) a main, standard format NTSC signal with auxiliary low frequency side panel image information compressed into an overscan region thereof; (2) auxiliary high f...
08/14/1990
4945402Method for producing NTSC compatible signal for widescreen tv system
A method for producing an NTSC compatible television signal for a widescreen television system having a widescreen panel includes deriving a luminance signal of a central portion of the widescreen panel, deriving a color signal modulated in response to th...
07/31/1990
4943848Television signal transmission system
A television signal transmission system is improved to be able to transmit a video signal having a frequency band wider than existing transmission frequency bands while maintaining compatibility with existing television systems. On the sending side, a wid...
07/24/1990
4926244Extended definition widescreen television signal processing system with alternate subcarrier
An NTSC compatible widescreen EDTV system encodes and decodes a television signal comprising: (1) a main, standard format NTSC signal component with low frequency side panel image information compressed into the overscan regions thereof; (2) a time expand...
05/15/1990
4897722Widescreen television transmission system utilizing conventional equipment including a camera and VCR
A widescreen enhanced definition television system compatible with an existing television standard (e.g., NTSC) has provisions for utilizing a conventional television camera. The conventional camera is modified by replacing the conventional lens with an a...
01/30/1990
4885631High resolution color television signal transmission system and receiver utilizing motion information of a picture
A television signal transmission system having an improved receiver which system is capable of transmitting a wide-band television video signal in a frequency band narrower than the frequency band of the television video signal is a multiplex video signal...
12/05/1989
4884127Apparatus for pre-conditioning auxiliary television signal information
An NTSC compatible, single channel widescreen EDTV system encodes and decodes a television signal comprising (1) a main, standard format NTSC signal with auxiliary low frequency side panel image information compressed into an overscan region thereof; (2) ...
11/28/1989
4866521Advanced compatible television system with auxiliary carrier
An NTSC compatible widescreen EDTV system comprises three components: (1) a main component containing center panel information and low frequency side panel information; (2) an auxiliary component containing side panel high frequency information; and (3) a...
09/12/1989
4855811Apparatus for processing auxiliary information in an extended definition widescreen television system
An NTSC compatible, single broadcast channel, widescreen EDTV system encodes and decodes a television signal comprising: (1) a main, standard formal NTSC signal component with low frequency side panel image information compressed into the overscan regions...
08/08/1989
4800427Method of compatibly increasing resolution in a color television system
Method of compatibly increasing the resolution in a color television system employing offset modulation at the transmitter and offset demodulation at the receiver and transmitting a reference signal during the vertical blanking interval. The reference sig...
01/24/1989
4745458Television signal processing system
In a color television signal processing system for converting a scanning signal sequentially scanned in the transmitting side into an interlace-scanned television signal in order to obtain a high-quality color television picture, said system is arranged t...
05/17/1988
4745460Method for transmitting a television signal by field to field processing
A television signal transmission system is improved to be able to transmit a video signal having a frequency band wider than existing transmission frequency bands while maintaining compatibility with existing television systems. On the sending side, a wid...
05/17/1988
4652904Television system with improved definition in field scanning direction
A television system with enhanced definition in the field scanning direction is presented. In the information transmitter a video signal source is coupled directly and via line delay device with a subtraction circuit followed by a modulator with a subcarr...
03/24/1987
4621287Time-multiplexing of an interleaved spectrum of a television signal
High horizontal spatial frequency information may be transmitted through a limited bandwidth channel by means of spatial-temporal frequency interleaving techniques. To transmit both frequency interleaved high horizontal spatial frequency information and d...
11/04/1986
 
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