Facsimile and static presentation processing – Static presentation processing – Attribute control
Patent
1983-07-19
1986-05-13
Masinick, Michael A.
Facsimile and static presentation processing
Static presentation processing
Attribute control
358 41, H04N 700
Patent
active
045890129
ABSTRACT:
A method and apparatus are disclosed for increasing vertical resolution of television and eliminating vertical aliasing by modulating vertical deflection of the camera a significant number of cycles per line, and modulating the vertical deflection of the display unit in phase with the modulation of the camera while displaying the video signal transmitted. The display unit is provided with its own modulating oscillator operating at the same stable frequency as the modulating frequency of the camera, and phase synchronized by information transmitted by the camera. In the case of NTSC color television, the vertical deflection modulating oscillator of the camera is the color modulating oscillator, and the vertical deflection modulating oscillator of the receiver is the oscillator used for color demodulation phase synchronized by color bursts gated during blanking periods of each frame. A frequency doubler is employed for modulation of vertical deflection in both the camera and the receiver in order that, for a line scanning rate of 15,734 lines per second, there will be 455 modulation cycles for each line. This technique for increasing vertical resolution can be practiced with other equipment and other standards, such as PAL and SECAM, and other video displays including but not limited to computer terminals, teleconferencing, and phonevision.
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Wendland, W., "Development Options for Future Television Systems", May 7, 1981, Meeting of the SMPTE HDTV Study Group, pp. 1-17.
Tonge, G. J., "The Sampling of Television Images," Experimental and Development Report 112/81, Independent Broadcasting Authority, England, pp. 1-34.
High Resolution Televison, Inc.
Masinick Michael A.
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