Idr, Inc.

Microband Corporation of America

Alfred A Dalimonte

Robert H Nagel

Richard Saylor

Paul J Fung

A television transmitter particularly suited for use in a multipoint distribution service television transmitting system for low power transmission within a limited geographical area. In such a system several transmitters can utilize a common set of reference signals to determine the carrier frequency of each transmitter. The transmitter includes a television modulator for modulating an applied video signal; a local oscillator circuit for generating a local oscillation signal, and a converter for converting the local oscillation signal and the modulated video signal to provide a television transmission signal. The local oscillator circuit receives a video signal to control the frequency of the local oscillation signals, for example in accordance with a characteristic of the color burst signal within the received video signal. The applied video signal can be the same as the received video signal or can be another television transmission signal. The television modulator can control the frequency of the modulated video signal in accordance with a VHF reference signal which can be another television transmission signal or can be a generated VHF reference signal the frequency of which is controlled by a parameter of the received video signal.

Television transmitter

An improved real time frame grabbing system for substantially instantaneously providing a continuous video display of a selectable predetermined video frame of information on a video display means from continuously transmittable video information comprises a plurality of means for transmitting the video information as a plurality of pseudo video scan lines with means being provided for selectively combining and interleaving corresponding identical out of phase digital information content containing pseudo video scan line portions of the plurality of transmission means corresponding pseudo video scan lines to provide an in phase composite combined interleaved pseudo video scan line to the video display means. This composite combined interleaved pseudo video scan line has a television video scan line format and is capable of comprising a complete self-contained composite packet of digital information equivalent in content to the content of either of the interleaved pseudo video scan lines and sufficient to provide an entire displayable row of video data characters to the video display means. The combined interleaved composite pseudo video scan line has an associated transmission time equivalent to that of a television video scan line. The interleaved information containing portions of the corresponding pseudo video scan lines of the plurality of pseudo video scan lines comprise different television video scan lines of the plurality of television video scan lines which comprise the composite pseudo video scan line displayable row. The system further includes television signal distribution means which comprise means for compensating for television transmission distortions in the provided composite combined interleaved pseudo video scan lines provided to the video display means by introducing controllable distortions in the provided composite combined interleaved pseudo video scan line signal prior to the distribution thereof.

Growing community of inventors

Westbury, NY, United States of America

Alfred A Dalimonte