TH4516B - A device for reducing the noise in the video signal by using compound amplitude and predictive signal processing techniques. - Google Patents

Abstract

A video signal processing system that uses a compound amplitude device to reduce the noise-producing effect in the transmission. The non-linear amplitude compression device is transmitted. For amplifying small signals and compressing large signals. Amplitude amplification device with inversion transfer function. Non-linear compression device In this case, the frequency outside the band is emitted by the output filter on the transmitter. That produces distortion to the signal.To compensate for those distortion, the transmitter will Precisely simulate the processing circuit at the receiver, including the receiver amplifiers. And filter device For birth, the prediction signal will be deleted. Exits the video signal that is received into the transmitter before the image signal is compressed to the transmitter. By producing false signals Which has been sent The error signal is small if the long run is good. Where the sound reduction will have an effect from the compression rate that the machine sends

Claims (8)

1. Video signal processing system for reducing the effect of sound output from the channel to the transmitted video signal. Which consists of Achamphoid Way For recording the amplitude of the video signal according to the transfer function provided. Predictive pathways responding to the output signal from the aforementioned amplitude intermittent pathway for producing predictive signals as a function of the size of the previous image signal sample. Expand amplitude With part transfer function Large is the inverse of the aforementioned transfer function and a means for arranging a differential signal showing the magnitude difference between the incoming video signal and the prediction signal to the input side of the Such amplitude device 2. System according to claim 1, where the said amplitude path shows a non-linear transfer function in which the amplitude Small amplitude is amplified and the small amplitude signal is compressed 3. The system according to claim 2 and also consists of Path for filtering the output signal from the aforementioned amplitude path and where the predictive path responds to that output from the amplitude-compression path after filtering by 4. System according to claim 3, where the said pathway Is a low-pass filter device 5. System according to claim 1, where the aforementioned method consists The receiving center corresponding to the input side of the amplitude amplitude path and the transmission center connected to the aforementioned differential signal path (10). Receive the first input for the signal from the aforementioned amplitude path. The input side, the second side and the signal output side, and 6. the system according to claim 5, where the interpolation will include a path for a period of delay. Most of the video signal information is interrelated 7. System according to claim 5, where such delay path will show the frame delay time 8. Device for receiving the signal sent by the system according to claim 1, which consists of A path to amplify the receiver amplitude for the sent signal. The way to expand it Which has a transfer function, mostly as the inverse of the such transfer function A combined path with the first input side for receiving the signal output from the receiver amplitude path, the second input side and the output side. The predictive path responds to the signal from the output side of the combined path for producing predictive signals, a function of the size of the previous image signal sample, and the path for connecting such prediction signals to The second side of the receiving side of the aforementioned integrated path 9. Equipment in accordance with claim 8 where the predictive path also includes a signal attenuation path and a delay for a period of time. The vast majority of video signal information are related to 1 0. Widescreen television signal processing systems that have the main wall and side wall image components and have a higher aspect ratio than standard TV aspect ratios. The system also includes a time-predefined siding path. A device for reducing the effect of sound output from the receiver on the transmitted video signal. Which consists of Such predictive pathways include amplitude-extending pathways with a transfer function, mainly inversion, such a given transfer function, and the path for which the signal is supplied. Differential, showing the dimensional difference between the incoming side wall component and the prediction signal to the input side of the amplitude compression device 1. 1. System according to claim 10, where the method of such amplitude A non-linear transfer function is displayed, where the amplitude-bid signal is amplified and the large amplitude signal is compressed. 2. The system according to claim 11 and also consists of Path for filtering out the signal output from the said amplitude path and where The predictive path responds to the signal output from the amplitude compression path after filtering by the filter path1. 3. System according to claim 12, where the method of filtering is Lo-pass filter 1 4. Claim system 10, where the aforementioned approach consists of The receiving center corresponding to the input side of the amplitude-amplified path and the transmission center connected to the path in which the differential signal is provided. The combined path with the first input side for the signal from the amplitude extrusion path. The second side of the input signal input and the output side. And interpretive means for providing the appearance of time-delayed signals. By reducing it from the transmission side The output signal of the aforementioned route goes to the said output center to the aforementioned second input side of the aforementioned route 1. 5. Clause 14 system where the means of translation include a path for a period of delaying the signal. Which most of the video signal information is related 1 6. Clause 14 system where such delay path will show frame delay 1. 7. The signal receiving device distributed by the system according to claim 10, which consists of A path to amplify the receiver amplitude for the sent signal. The way to expand it Which has a transfer function, mostly as the inverse of the such transfer function A combined path with the first input side for receiving the signal output from the receiver amplitude path, the second input side and the output side. The predictive path responds to the signal from the output side of the combined path for producing a predictive signal, a function of the size of the previous image signal. The path for connecting the said prediction signal to the aforementioned second input side of the combined pathway Route for time amplification from the said output side of the aforementioned route 1 8. In a wide screen TV reception system with the main wall video component and the side wall video component. And has a aspect ratio criterion than that of a standard television picture Side wall image component processing equipment Which consists of A characteristic amplitude amplitude path of the non-linear transfer in response to the side wall image component. The combined path has the first input side for receiving the signal output from the receiver amplitude path, the second input side and the output side. The predictive path responds to the signal from the output side of the combined path for producing a predictive signal, a function of the magnitude of the previous image signal. The path for connecting the said prediction signal to the aforementioned second input side of the combined path; and A path for amplifying a time signal from the output side of the said combined path.