Bandwidth compression system and method

A bandwidth compression system, comprising:

• input means for receiving a sampled video signal of wide bandwidth from one line and succeeding sampled signals from succeeding vertical positions;
• an analog-to-digital converter connected with said input means, said converter producing a digital output indicative of the amplitude of a sampled video signal received at said input means;
• buffer storage means connected with said analog-to-digital converter to receive the output therefrom and store the same;
• a digital-to-analog converter for receiving the output from said buffer storage means and producing an analog signal based thereon;
• and clock switching means for causing storage of said digital signal at a rate equal to the sampled rate and for controlling the conversion at a reduced rate of said digital signal into an analog signal having substantially the same amplitude variations as a received sampled video signal but having a predetermined narrow bandwidth.

A bandwidth compression system, comprising:

• input means for receiving a sampled video signal of wide bandwidth from one line and succeeding sampled signals from succeeding vertical positions;
• an analog-to-digital converter connected with said input means, said converter producing a digital output indicative of the amplitude of a sampled signal received at said input means;
• first and second buffer storage means connected with said analog-to-digital converter to alternately receive the output therefrom;
• an output gating circuit connected to receive the output from said first and second buffer storage means;
• a digital-to-analog converter for receiving the output from said first and second buffer storage means through said output gating means, said converter producing an analog signal based upon the digital signal received from said first and second buffer storage means;
• and clock switching means connected with said first and second buffer storage means, said output gating means and said digital-to-analog converter causing the sampled amplitude of the signal received at said input means to be converted to a digital signal for storage and for controlling conversion of said digital signal into an analog signal of narrow bandwidth relative to a sampled video signal received at said input means, said output being a non-interlaced output.

A method for bandwidth compression, comprising:

• receiving a sampled signal of wide bandwidth from one line and succeeding sampled signals from succeeding vertical positions and producing therefrom a digital output signal indicative of the amplitude of the received sampled video signal;
• storing the digital signal;
• and
• converting the digital signal to analog form from said storage with said analog signal having substantially the same amplitude variation as does the received sampled video signal but with a narrow bandwidth relative to the received sampled video signal.

A signal processing system, comprising:

• input means for receiving a wide bandwidth signal;
• means for sampling a received wide band video signal from one line and succeeding sampled signals from succeeding vertical positions;
• first converter means connected with said input means for producing an output in digital form that is indicative of at least predetermined characteristics of a sampled signal received at said input means;
• storage means connected with said first converter means for receiving the output therefrom and storing the same;
• and
• second converter means connected with said storage means to receive the output therefrom and responsive thereto producing an output signal in analog form that includes substantially the same predetermined characteristics of said sampled signal but having a relatively narrow bandwidth with respect thereto.

A signal processign system, comprising:

• input means for receiving a wide band video signal with a sampled signal from one line and succeeding sampled signals from succeeding vertical positions;
• means for sampling and holding a received wide band video signal;
• sync separator means for receiving the wide band video signal;
• horizontal and vertical drive recovery means connected with said sync separator means;
• an analog-to-digital converter connected with said sampling and holding means, said converter producing a digital output indicative of the amplitude of a sampled video signal received at said input means;
• buffer storage means connected with said analog-to-digital converter to receive the output therefrom and store the same;
• a digital-to-analog converter for receiving the output from said buffer storage means and producing an analog signal based thereon;
• and
• clock switching means connected to said horizontal and vertical drive recovery means for causing storage of said digital signal at a rate equal to the sampled rate and for controlling the conversion at a reduced rate of said digital signal into an analog signal having substantially the same amplitude variations as the received sampled video signal but having a predetermined narrow bandwidth.

A bandwidth compression system, comprising:

• input means for receiving a sampled signal having a wide bandwidth from one line and succeeding sampled signals from succeeding vertical positions:
• signal processing means connected with said input means for receiving a sampled signal from said input means and processing the same including signal storing;
• and
• control means for controlling said signal processing means so that an output is produced therefrom in analog form that includes substantially the same predetermined characteristics as said sampled signal but having a relatively narrow bandwidth with respect thereto.

A bandwidth compression system comprising:

• input means for receiving a sampled video signal of wide bandwidth from one line and succeeding sampled signals from succeeding vertical positions;
• analog shift register buffer storage means connected to receive a sampled video signal received at said input means and store the same;
• sample and hold means connected with said analog shift register buffer storage means to receive the output therefrom;
• and
• control means connected with said analog shift register buffer storage means and said sample and hold means to cause storage of said received video signal at a rate equal to the sampled rate and for controlling the analog signal output from said sample and hold means at a predetermined reduced rate having substantially the same amplitude characteristics as a received sample video signal having a predetermined narrow bandwidth.

A bandwidth compression system, comprising:

• input means for receiving a sampled video signal of wide bandwidth from one line and succeeding sampled signals from succeeding vertical positions;
• first and second analog shift register buffer storage means connected with said input means to alternately receive the sample video signal therefrom;
• sample and hold means;
• an analog switch connected between said first and second analog shift register buffer storage means and said sample and hold means;
• clock switching means connected with said first and second analog shift register buffer storage means and said analog switch for causing storage of said received video signal at a rate equal to the input sampled rate and for controlling the analog signal output to said sample and hold means at a predetermined reduced rate having substantially the same amplitude variations as a received sample video signal but having a predetermined narrow bandwidth;
• and
• a divider circuit connected with said clock switching means and said analog switch to cause said analog signal coupled to said sample and hold means from said first and second analog shift register buffer storage means through said analog switch to be coupled to said sample and hold means alternately.