Gray scale sync video processing system
First Claim
Patent Images
1. A video processing system, comprising:
- a source of video signals of a given narrow bandwidth;
means to transmit said video signals;
means to receive said video signals;
said video signals including a picture component and a blanking component;
first circuitry connected to said source and said transmission means for eliminating said blanking component and increasing said picture component for transmission; and
wherein said picture component is increased by at least twenty-five percent of the composite peak-to-peak deviation of said signals;
a source of audio signals and wherein said first circuitry mixes said audio signals into said video signals; and
second circuitry connected to said receive means.
5 Assignments
0 Petitions
Accused Products
Abstract
The blacker-than-black sync pulse of a standard video signal is replaced by a gray scale sync to increase picture signal, permit audio multiplexing and allow security phase inversion by means of encoder and decoder circuitry including a sync stripper, gate and timing generator, audio processor, phase code generator, color reference regenerator, blank and summing amplifier, and phase reversal amplifier.
-
Citations
39 Claims
-
1. A video processing system, comprising:
-
a source of video signals of a given narrow bandwidth; means to transmit said video signals; means to receive said video signals; said video signals including a picture component and a blanking component; first circuitry connected to said source and said transmission means for eliminating said blanking component and increasing said picture component for transmission; and
wherein said picture component is increased by at least twenty-five percent of the composite peak-to-peak deviation of said signals;a source of audio signals and wherein said first circuitry mixes said audio signals into said video signals; and second circuitry connected to said receive means. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16)
-
-
17. The method of processing a video signal with a picture component and a blanking component including the steps of:
-
eliminating the blanking component; increasing the picture component simultaneously with said elimination step; inserting synchronization in the video signal after the elimination step; multiplexing audio information onto the video signal simultaneously with said synchronization step; transmitting the resulting video signal. - View Dependent Claims (18, 19, 20, 21, 22)
-
-
23. Video processing apparatus comprising:
-
a source of video signals of a given bandwidth; means to transmit said signals; said video signals including a picture component and a blanking component; blanking means replacing said blanking component with synchronization means including a plurality of pulses; a source of audio signals and wherein said audio signals are mixed into said video signals and said bandwidth remains constant; and increasing said picture component for transmission. - View Dependent Claims (24, 25, 26, 27, 28, 29)
-
-
30. The method of processing a video signal with a picture component and a blanking component including the steps of:
-
eliminating the blanking component; increasing the picture component simultaneously with said elimination step; inserting synchronization in the video signal after the elimination step; multiplexing audio information onto the video signal simultaneously with said synchronization step; inserting color information into the synchronization; placing the synchronization midway between the white and black extremities of the video signal; reversing the polarity of alternating picture components; and transmitting the resulting video signal.
-
- 31. Video processing apparatus, comprising means for receiving video signals with modulated audio information, first circuitry connected to said means for extracting said information, second circuitry connected to said means for inserting a blanking component and decreasing the picture component in said signals.
- 35. The method of processing a video signal with audio information, comprising the steps of extracting said information, inserting a blanking component in said signal, and simultaneously with said insertion decreasing the picture component in said signal.
-
39. The method of processing a video signal having a limited bandwidth and having a picture component and a blanking component including the steps of:
-
eliminating the blanking component, increasing the picture component to more fully utilize the limited bandwidth, inverting each alternate line of the video signal to provide a more uniform frequency distribution centered about the carrier hence providing better use of threshold extension and suitable for use with a narrow bandwidth while improving the security of the transmission, providing a horizontal blanking interval midway between the white and black extremities of the video signal, providing a pulse width modulated audio signal in the horizontal blanking interval, transmitting the resulting signal.
-
Specification