RU23032U1 - AUDIO TRANSMISSION SYSTEM - Google Patents

Abstract

1. A system for transmitting an image with sound, comprising transmitting equipment of a satellite trunk, configured to receive a group transport stream and transmit encoded signals to an artificial Earth satellite, relay equipment of an artificial Earth satellite, configured to receive said encoded signals and relay encoded signals to Earth, at least two digital satellite receivers, configured to receive relay of the encoded signals, the terminal receiving equipment made of audio playback apparatus and an image reproducing apparatus, wherein the input of the audio reproducing apparatus is connected to the audio output of the digital satellite receiver, and the input of the image reproducing apparatus is connected respectively to the image reproducing output of the digital satellite receiver, characterized in that the transmitting equipment of the satellite trunk but with the possibility of receiving a group transport stream for at least one movie, and transmitting, respectively, the encoded signals of this movie to an artificial Earth satellite, and the image reproducing device is made of an electronic film projector, the input of which is the said input of the image reproducing device and made analog , and from a screen installed with the possibility of projecting a beam from an electronic film projector onto it, while the digital satellite receiver is made with

Description

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AUDIO TRANSMISSION SYSTEM

Accompanied by

The utility model relates to electronic equipment and can be used to create a film distribution network, cinemas which can be removed from each other at considerable distances.

A device for delivering film copies to cinemas containing a communication line, an operation center configured to convert an optical image into a digital signal, an encoder, the output of which is connected to a transmitter, the output of which is connected to a communication line, and many cinemas, each of which has a receiver, converter of a digital signal into an optical image and a decoder (Certificate for utility model of the Russian Federation No. 9356, N 04 N 7/16, publ. 16.02.99).

In this device, the converter of the digital signal into an optical image can be BbmojnieH in the form of a digital film projector with a screen or a television projector. The cable line is used as a communication line, which is made in the form of two channels: unidirectional broadband and duplex narrowband. In addition, the operating center of this device is equipped with a storage device, which is additionally connected by appropriate connections with the encoder, and the receiver has its own storage device. This certificate for a utility model protects a co-functional block diagram of the connections of the controller, storage device, encoder, address sensor from the transmitting part of the equipment, as well as the receiver, address depragrator, controller, encoder, storage device, signal decoder from the receiving part of the equipment .-

The advantage of this technical solution is the ability to watch movie programs in cinemas with a large number of viewers through the use of electronic film projectors known from the prior art, which provide the inverse conversion of a digital signal into a video signal and projection of the image on a larger screen.

H 04 N 5/74

The limitations of the device are: insufficiently high range of transmission of film programs via cable lines, which does not allow you to organize watching movies in cinemas, geographically located at significant distances from each other; in the case of using as a communication line the transmission of electromagnetic waves propagating in space, and as a transmitter and receiver, corresponding equipment emitting and receiving electromagnetic waves, such a system has reduced noise immunity and range, which is limited by the range of wave propagation in the atmosphere; with the above disadvantages, a system implemented using a known device, with the development of an extensive film distribution network in large territories, for example, such as the territory of the Russian Federation, has a high cost.

There are various satellite systems for transmitting television images with sound (for example. Patent of the Russian Federation No. 2138923, H 04 N 7/16, publ. 09/27/99 or Patent of the Russian Federation No. 2146855, H 04 N 7/16, publ. 20.003. 2000). These systems using natural satellites of the Earth make it possible to transmit a large number of television programs and to receive these programs to a large number of users of traditional television receivers using parabolic antennas installed at users' locations. Or such systems serve to satisfy the interests of cable television consumers by receiving signals relayed by satellite, cable television headend with the help of a large number of parabolic antennas of digital satellite receivers installed at the location of the headend. The advantage of such systems is the high information content and high quality of image transmission and sound accompaniment of television programs over a large area.

the terminal device for image reproduction is a video monitor or a television receiver of a television receiver, and they are not intended for transferring images to large-format projection screens; the possibilities of using such systems to organize a film distribution network are not known and have not been investigated, with the possibility of viewing films by a large number of viewers in one cinema hall or in cinemas spaced apart from each other over long distances.

Closest to the maximum number of similar natural signs is a system for transmitting images with sound, containing transmitting equipment of the satellite trunk, configured to receive a group transport stream and transmit encoded signals to an artificial Earth satellite, relay equipment of an art satellite of the Earth, configured to receiving said encoded signals and relaying the encoded signals to the Earth, at least , a core of digital satellite receivers configured to receive relay encoded signals, terminal receiving equipment made from sound reproducing apparatus and an image reproducing apparatus, the input of the sound reproducing apparatus being connected to the sound output of the digital satellite receiver, and the device input reproducing the images connected respectively, with digital satellite image playback output at the listener (B.A. Lokshin “Digital broadcasting: from studio to TV viewer, ed. Prof. L.S. Vilenchik, SYRUS SYSTEMS publishing house, Moscow, 2001, chap. 11, p. 271276).

Such a system is used when relaying television programs on the NTV + television channel.

maintenance and due to the high cost of paying for services is inaccessible to a very large number of consumers.

From the prior art, the applicant has not identified a technical solution that would combine the advantages of using satellite-based image transmission systems and sound for organizing an extensive film distribution network, and in which electronic film projectors would be terminal devices for reproducing images.

The problem being solved by a utility model is to ensure the organization of a film distribution network over a vast area, as well as reducing the cost of using this system for users.

The technical result that can be achieved with the help of a useful model is to improve the quality of showing films in the distribution network, simplifying the delivery of film copies of films to cinemas, providing the ability to view several films in one cinema during one day, ensuring the speed of replacing films depending on the number of viewers visiting cinema halls, ensuring viewing of new films and films of great interest in the country's vast and extended territory at the same time but, as well as the complication of high-quality unauthorized dubbing and copying of films.

To solve the problem with the achievement of the specified technical result in the known system for transmitting images with sound, containing the transmitting equipment of the satellite trunk, the receiver is capable of receiving a group transport stream and transmitting encoded signals to the artificial satellite 3eMjffl, relay equipment of an artificial Earth satellite, made with the possibility receiving said encoded signals and relaying the transmitted signals to the Earth, at least Leray, two digital satellite prievgaika, adapted to receive signals relayed zakod1fovash1yh, the receiving terminal equipment from the apparatus vsholneshyue playback sound

accompaniment to and from the image reproducing device, wherein the input of the audio reproducing equipment is connected to the audio output of the digital satellite receiver, and the input of the image reproducing device is connected respectively to the image reproducing output of the digital satellite receiver, according to the claimed design, the transmitting equipment of the satellite trunk is configured to receive group transport stream for at least one movie, and and, accordingly, the encoded sigals of this movie to an artificial Earth satellite, and the image reproducing device is made from an electronic film projector, the input of which is the mentioned input of the image playback device and is made analog, and from a screen installed with the possibility of projecting a beam from the electronic film projector onto it, when a digital satellite receiver is provided with an analog output for the image signal and this output is connected to said analog input Wow movie projector.

There are additional options for implementing the system, in which it is advisable that:

The digital-satellite satellite receiver was made up of a series-connected receiving antenna, a low-noise amplifier with a converter, a receiver-decoder, the digital output of which is connected to sound reproducing equipment, and the receiver-decoder was equipped with a digital-to-analog converter for the image signal, the output of which serves as the mentioned analog digital satellite receiver output;

-digital satellite receiver was made of series-connected receiving antenna, low noise amplifier with converter, receiver-decoder, receiver-decoder was equipped with a digital-to-analog converter for the image signal and for the audio signal, one output of the digital-to-analog converter for the image signal serves as mentioned analog digital output

satellite receiver, and the other output of the digital-to-analog converter for the sound synchronization signal serves as the output of the sound accompaniment of the digital satellite receiver.

The indicated advantages of the utility model, as well as its features are explained by the best options for its implementation with reference to the drawings.

FIG. 1 depicts a functional diagram of the claimed system, with a digital input of audio playback equipment;

Fs. 2, the same as FIG. 1, with an analog input of sound reproduction equipment.

The system for transmitting images with sound accompaniment (Fig. 1, 2) contains a non-fading equipped 1 satellite trunk, configured to receive a group traffic stream and transmit encoded signals to an artificial Earth satellite. The relay equipment 2 of the artificial Earth satellite is configured to receive said encoded signals and relay the encoded signals to the Earth. The system has at least two digital satellite receivers 3, configured to receive relay encoded signals, as well as terminal receiving equipment 4, performed from sound reproducing apparatus 5 and from image reproducing device 6. The input of the equipment 5 is connected to the output of the audio accompaniment of the digital satellite receiver 3. The input of the image reproducing device 6 is connected respectively to the output of the image of the digital satellite receiver 3.

Its transmitting equipment 1 satellite trunk is configured to receive a group transport stream for at least one movie, and transmit, respectively, the encoded signals of this movie to an artificial Earth satellite (AES). The image reproducing device 6 is completely made from an electronic film projector 7, the input of which is the mentioned input of the device 6,

62: // GLI of the screen 8, mounted with the possibility of projecting a beam from the electronic film projector 7. The digital satellite receiver 3 is made with an analog output for the image signal and this output is connected to the analog input of the electronic film projector 7. In FIG. 1, 2 are also shown: group transport stream 9, transmitting antenna 10 of transmitting equipment 1, respectively, receiving 11 and transmitting 12 antennas of relay equipment 2, receiving antenna 13 of digital satellite receiver 3.

The digital satellite receiver 3 may be implemented in accordance with a commonly used functional circuit for transmitting television images. The digital satellite receiver 3 in this embodiment comprises a receiving antenna 13, a low noise amplifier (LNA) with a converter 14, and a phono decoder 15 connected in series.

In an embodiment of the utility model, the digital output of the decoder receiver 15 is connected to the sound reproduction equipment (Fig. 1), and the receiver-decoder is equipped with a digital-to-analog converter 16 (DAC) for the image signal. The output of the DAC 16 serves as the aforementioned analog output of a digital satellite receiver 3.

In another embodiment of the utility model (Fig. 2), the receiver-decoder 15 is also equipped with a DAC 16, but for both the image signal and the sound signal. One output of the DAC 16 for the image signal serves as the analogue output of the digital satellite receiver 3, and another output of the DAC 16 for the sound signal serves as the mentioned sound output of the digital satellite receiver 3.

The system works (Fig. 1, 2) as follows.

A group transport stream 9 is formed by a group mutex (in Fig. 1) from transport streams for one or several movies with their sound accompaniment, while the movie is converted from optical to digital, and sound

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accompaniment - in your sound form with subsequent encoding. Encoding can be performed in any accepted standard, for example, in the MPEG -2 standard. The transmitting equipment 1 allows in the case of transmission of television images to transmit usually from tens to hundreds of television programs at the same time, therefore, this typical equipment can be used to transmit images of several movies also simultaneously. In the case of transferring films, only a slightly larger array of information data is processed, which is associated with the need for subsequent projection of images by an electronic film projector 7 on a large area of Elfane 9. The transmitting equipment 1 amplifies the group transport stream, modulates it at high frequency to generate electromagnetic waves and through the transmitting antenna 10 encoded signals are transmitted to an artificial Earth satellite (AES).

The relay equipment 2 of the satellite receives them with a receiving antenna 11 and relays them with the help of a transmitting antenna 12 to Earth at very large distances from the location of the transmitting equipment 1 to at least two digital satellite receivers 3.

The digital satellite receiver 3 receives the relayed encoded signals by the receiving antenna 13 and converts them from the high carrier frequency of the electromagnetic wave to a low frequency into a digital form corresponding to the group transport stream 9 at the input of the transmitting equipment 1. For this, a low-noise amplifier with converter 14 and a receiver decoder 15. Receiver-decoder 15 provides the insertion of packetized movie streams with sound from a digital stream for one movie or a multi-program bit-stream for several films. The receiver-decoder 15 by means of the DAC 1b converts the digital stream into analog. The corresponding signals are transmitted to the terminal receiving equipment 4, made from equipment 5

.lC 9 audio playback to and from the device 6 image playback. The equipment 5 can work in any mode, paired with the transmission mode, for example, mono, stereo, Dolby Digital, etc. In this case, the equipment 5 can be connected directly to the digital output of the receiver-decoder 15 (Fig. 1) or to its analog output for the audio playback signal through the DAC 16.

The device 6, made of their electronic film projector 7 and screen 8, receives analog signals from the output of the DAC 16, which is the analog output image of the digital satellite receiver 3, and the electronic film projector 7 converts the analog signals into a video image, which is projected on the screen 8.

As an electronic film projector 7, any known device with an analog output can be used. A feature of this utility model is the use of an analog output of a digital satellite receiver for image reproduction, for which, for example, a receiver-decoder 15 equipped with a DAC 16 can be used, which further eliminates high-quality unauthorized dubbing and copying of films, since the dubbing quality of an analog image signal. This eliminates the "pirated reproduction of films. In this case, when playing back the soundtrack of a movie, both a digital soundtrack signal (Fig. 1) and analogue (Fig. 2) can be used.

Thus, as a result of using the utility model, the quality of showing films on the distribution network is improved due to the transmission of images and sound through digital satellite relay equipment 2. Simplified delivery of film copies of the film to theaters, as production of only one film copy is required on film, and duplicates can be replicated in an unlimited number of copies in digital form on CD-ROMs, and only one copy can be used in

in digital form for delivery via satellite relay equipment 2 to many cinemas located at very great distances from each other. It is possible to view several films in one cinema hall of the cinema for one day (5-6 sessions per day in annual mode), since the group transport stream 9 can simultaneously include arrays of information for several films. It is possible to watch new films (film premieres) and films that arouse great interest in the vast and extended territory of the country at the same time. In addition, the efficiency of replacing films is ensured depending on the number of spectators visiting the cinema halls. Unauthorized, high-quality movie copying is excluded. When forming a film distribution network, one can already use the premises of cinemas, clubs, assembly halls and any premises suitable for these purposes. Economic calculations show that when creating a federal publicly available film distribution network on the basis of the claimed system, the average ticket price does not exceed 0.7 US dollars (20 rubles).

The most successfully announced system for transmitting images with sound is industrially applicable when forming a film distribution network in a vast area, as well as to ensure the quality of films shown and their rapid replacement.

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Claims (3)

1. A system for transmitting an image with sound, comprising transmitting equipment of a satellite trunk, configured to receive a group transport stream and transmit encoded signals to an artificial Earth satellite, relay equipment of an artificial Earth satellite, configured to receive said encoded signals and relay encoded signals to Earth, at least two digital satellite receivers, configured to receive relay of the encoded signals, the terminal receiving equipment made of audio playback apparatus and an image reproducing apparatus, wherein the input of the audio reproducing apparatus is connected to the audio output of the digital satellite receiver, and the input of the image reproducing apparatus is connected respectively to the image reproducing output of the digital satellite receiver, characterized in that the transmitting equipment of the satellite trunk but with the possibility of receiving a group transport stream for at least one movie, and transmitting, respectively, the encoded signals of this movie to an artificial Earth satellite, and the image reproducing device is made of an electronic film projector, the input of which is the said input of the image reproducing device and made analog , and from a screen installed with the possibility of projecting a beam from an electronic film projector onto it, while the digital satellite receiver is made with tax output image signal, and this output is connected to said analog input electronic film projector.  2. The system according to claim 1, characterized in that the digital satellite receiver is made up of a series-connected receiving antenna, a low-noise amplifier with a converter, a receiver-decoder, the digital output of which is connected to sound reproducing equipment, and the receiver-decoder is equipped with a digital-to-analog converter for the signal image, the output of which serves as the aforementioned analog output of a digital satellite receiver. 3. The system according to claim 1, characterized in that the digital satellite receiver is made of a series-connected receiving antenna, a low-noise amplifier with a converter, a receiver-decoder, the receiver-decoder is equipped with a digital-to-analog converter for an image signal and for an audio signal, one output of a digital-to-analog converter for the image signal serves the aforementioned analog output of a digital satellite receiver, and another output of the digital-to-analog converter for the sound signal of the case um said outlet sound digital satellite receiver.