RU2274958C2 - Method for transmitting and receiving audio-video information, system for realization of said method and tele-receiving device - Google Patents

Abstract

FIELD: television equipment engineering.

SUBSTANCE: method for transmitting and receiving audio-video information includes its transformation to television channel signals, their transmission and receipt. Received television broadcast signals are transformed to standard signals of reproduced television programs, in each of these video and audio components are selected, then visual information of each video component is reproduced on currently unoccupied screen of at least two television receivers, while audio information is reproduced by sending all audio components to sound device. Tele-receiving device has television receivers with screens, number of which is appropriate for number of simultaneously received television programs, demodulators, connected by their inputs to receiving antenna, and by outputs to commutation matrix and sound mixer console, output of which is connected through amplifier to sound portal, while each one of television receivers is connected to receipt antenna through commutation matrix and native demodulator.

EFFECT: possible broadcast of television programs with imitation of direct communication of transmission participants located in different studios of one and/or several channels.

3 cl, 2 dwg

Description

The invention relates to equipment for television and can be used on television studios, in information and entertainment facilities, as well as at home.

A known method of transmitting and receiving audiovisual information (see SES, Moscow, Sov.ents., 1988, p. 1317), comprising converting audiovisual information of at least two television programs into signals of television channels and transmitting them through television broadcasting, receiving television signals broadcasting and reproducing audio-visual information on a television receiver.

A known system for transmitting and receiving audiovisual information (see ibid.), Including television transmitting and receiving devices connected by television broadcasting channels, realizing the transmission and reception of audiovisual information in the form of television programs as follows.

A television transmitting device comprises sources of audiovisual information, for example, television cameras, video recorders, by means of which they create audiovisual information in the form of a television program, and converters of audiovisual information into signals of television channels, which through television broadcasting through transmitting antennas, television broadcasting channels and satellite in the form of a television broadcast signal arrive at the receiving antenna of the television receiver. A television communication channel is an established radio frequency band for transmitting radio signals of an image and sound accompaniment of one television program. With television broadcasting, several television programs are broadcast.

The television receiver comprises a demodulator and a television receiver that reproduces the audiovisual information of one television program.

A television broadcast signal carrying audio and video signals of various programs is input to the input of a television receiver through an antenna.

A television receiver converts a television broadcast signal into a standard signal of a reproduced television program and reproduces on its own screen visual information and audio information on its own sound device. A television receiver may contain control units that allow you to open “windows” on the TV screen for informational familiarization with several programs at the same time (see Consumer magazine No. 5, 1999, p. 13).

The known method for transmitting and receiving audiovisual information, a television receiving device and a system for transmitting and receiving audiovisual information do not allow expanding the functionality of television broadcasting to display television programs that stimulate a sense of complicity among the creators, participants of the program and the viewer by simulating the direct communication of the program participants who are in different studios of one channel and / or studios of different television channels and a script combined in one television ogramme as limited by the capabilities of the screen, do not allow the full look and switched several programs simultaneously.

The present invention is based on the task of developing a method for transmitting and receiving audiovisual information, a system for its implementation, providing an extension of the functionality of television broadcasting to display television programs that stimulate a sense of complicity among the creators, participants of the program and the viewer by simulating the direct communication of the program participants in various studios of one channel and / or studios of various television channels and / or in another place and scenario combined in ne television program broadcasting and telepriemnogo device providing improved viewing, switching on and several television programs simultaneously.

The problem is solved in that in a method for transmitting and receiving audiovisual information, including converting audiovisual information of at least two television programs into signals of television channels and transmitting them through television broadcasting, receiving television broadcasting signals and reproducing audiovisual information on a television receiver, according to the invention, reproduce simultaneously audiovisual information of at least two television programs, while the received signals are levis broadcasting is converted into standard signals of reproduced television programs, video and audio components are extracted in each of them, then visual information of each video component is reproduced on the currently free screen of one of the at least two television receivers, and audio information is reproduced by transferring all audio components to the audio device .

It is advisable to convert the audiovisual information of at least one television program into a signal of a television channel in digital form, which is preliminarily formed by mixing at least three analog signals from information sources, while the visual information of each information source is reproduced on a screen that is currently free.

When reproducing audiovisual information, it is possible to control the video image and sound signal.

The problem is also solved by the fact that in a system for transmitting and receiving audiovisual information containing a television receiving device connected via television broadcasting channels to a television transmitting device, according to the invention, the television receiving device contains television receivers with screens, the number of which corresponds to the number of simultaneously received television programs, demodulators, connected by their inputs to the receiving antenna, a switching matrix to which the video outputs of the demod are connected booster, while each of the television receivers is connected to the receiving antenna through a switching matrix and a corresponding demodulator, a sound mixing console, the inputs of which are connected respectively to the audio outputs of the demodulators, an amplifier connected to the output of the sound mixing console, and a sound portal connected to the output of the amplifier.

The tele-transmitting device may contain at least three sources of information, a video server connected to its inputs with information sources, a modulator connected to the output of the video server and a generator, while the television receiving device further comprises decoders, the input of each of which is connected to the output of the corresponding demodulator, the video output is connected to the corresponding output of the switching matrix, and its audio output to the corresponding input of the sound mixing console.

The screen of a television receiver can be made in the form of a cathode ray tube, or a monitor, or a plasma panel, or a projection screen, and the information source can be in the form of a television camera, or a VCR, or a computer.

In addition, the system may further comprise control video monitors and sound monitors,

The problem is also solved by the fact that a television receiver containing a connected television receiver and a demodulator, according to the invention further comprises at least one television receiver and one demodulator, and the total number of television receivers and demodulators corresponds to the number of simultaneously received television programs, in addition, the television receiver contains a switching matrix to which the video outputs of the demodulators are connected, and the inputs of television receivers, sound kovuyu mixing console, the inputs of which are respectively connected to the audio output demodulator, amplifier coupled to the output of the audio mixing console, and sound portal coupled to the output amplifier.

In the future, the invention is illustrated by specific examples of its implementation and the accompanying drawings, in which:

figure 1 depicts one embodiment of a schematic diagram of a system for transmitting and receiving audiovisual information;

figure 2 is another variant of a schematic diagram of a system for transmitting and receiving audiovisual information.

The proposed method for transmitting audiovisual information is as follows.

They create audiovisual information using information sources, such as television cameras, video recorders, in the form of a series of television programs.

The audiovisual information of at least two television programs is converted into signals of television channels, transmitted by television broadcasting, received a television broadcast signal, converted into standard signals of reproduced television programs, at least two simultaneously, video and audio components are extracted in each standard signal. Each video component enters the currently free screen of the television receiver and reproduces the visual information of the television program, so each video component can be played on any of the screens. The audio components arrive at the sound device. The screen may be a cathode ray tube, or a monitor, or a plasma panel, or a projection screen. In the implementation of method s, in the particular case, the audiovisual information of at least one television program is converted into a digital signal of a television channel. Moreover, this signal is formed by mixing at least two analog signals from information sources, and the information of each information source is reproduced on the corresponding screen of the television receiver. Moreover, each of the sources of information corresponds to any of the cranes.

The system for transmitting and receiving audiovisual information includes a television transmitting device 1 (FIG. 1) connected via television broadcasting to a television receiving device 2. The television transmitting device 1 contains sources of information (not shown), for example, television cameras, video recorders, through which they create audio-visual information in the form of television programs. Each television program is converted into television channel signals, which are transmitted through television broadcasting antennas 3, television broadcasting channels 4 and satellite 5 in the form of television broadcasting signal 6 to the receiving antenna 7 of television receiver 2. By television broadcasting is meant any satellite or cable broadcasting.

The television receiver 2 contains demodulators 8, 9, 10 connected at the input to the receiving antenna 7. Demodulators 8-10 convert the television broadcast signal into standard signals of reproduced television programs and extract their video and audio components in analog form. The switching matrix 11 is connected by communication channels 12, 13, 14 with the video outputs of demodulators 8-10 and communication channels 15, 16, 17 with video inputs of television receivers with their own screens 18, 19, 20. Each television receiver is connected to the receiving antenna 7 through the switching matrix 11 and its own demodulator 8, or 9, or 10. Each video component from the video output of the corresponding demodulator 8, or 9, or 10 goes to the currently free from the screens 18-20 of the television receiver, and each video component corresponds to any of these their screens. The video component from the output of the demodulator 8 through the switching matrix 11 can be received either on the screen 18, or on the screen 19, or on the screen 20. According to the director's or personal intention, a screen is selected for it, for example, 18, it is turned on via the switching matrix 11. of the screen, the director's intention of the program matters - image dominance, mounting frames of adjacent screens, etc. The video components from the outputs of the demodulators 9 and 10 are respectively supplied to the screens 19 and 20. Thus, the switching matrix 11 switches the reproduced television programs and television receivers.

The video outputs of the demodulators 8-10 are connected by channels 21, 22, 23 of communication with the sound mixing console 24, the output of which is connected to the amplifier 25 and through it with the sound portal 26.

The number of screens of television receivers and demodulators corresponds to the number of simultaneously shown television programs. Figure 1 shows three screens 18-20 and three demodulators 8-10, but their number may be different. It is determined by specific tasks and technical capabilities, for example, television broadcasting. The screen of the television receiver may be a cathode ray tube, or a monitor, or a plasma panel, or a projection screen, for example, it is permissible that the screen 18 is a cathode ray tube, the screen 19 is a plasma panel, and the screen 20 is a projection screen, that is, a television receiver contains a split screen, which can be made from screens of the same type, for example, cathode ray tubes, or from any combination thereof.

Each television transmitting device 1 (FIG. 2) contains at least three sources of information 27, 28, 29, for example, television cameras, and / or video recorders, and / or computers, and / or computer displays, a video server 30 connected to the input with outputs sources of information 27-29, a modulator 31 connected to the output of the video server 30 and its own generator 32. The video server 30 combines the output signals of the sources 27-29 of information into one output signal in digital form, which is then converted by the modulator 31 into a transmitting signal of a television channel digital communications.

The television receiver 2 contains a group of television receivers 33, 34, 35, the number of which corresponds to the number of information sources, demodulators 36, 37, 38 connected to the receiving antenna 7, decoders 39, 40, 41, the inputs of which are connected to the outputs of the demodulators 36-38, the video output of each of the second is connected to the corresponding output of the switching matrix 42, and its audio output is connected to the corresponding input of the sound mixing console 43.

The signal from the demodulator is digitally fed to the input of the corresponding decoder, where it is converted into analog form and the video and audio components are extracted, then the video components are fed to the input of their own television receiver 33-35 through the switching matrix 42, and the audio components are fed to the sound mixing console 43, connected to the audio output of each decoder 30-41, an amplifier 44 connected at the input to the output of the sound mixing console 43, and a sound portal 45 connected to the output of the amplifier 44.

When creating programs and the remoteness of the participants, at each input and output of the switching matrix 42, control monitors 46 and 47 are respectively installed for viewing and monitoring the video image. Control in this case, the audio signal lead sound monitor 48.

The proposed system for transmitting and receiving audiovisual information works as follows.

The audiovisual information of a number of television programs is converted into signals of television channels in analog form, which are transmitted to a receiving antenna 7 through television broadcasting as a single signal 6 (FIG. 1) of a television broadcasting. Television receiver 2 shows three television programs at the same time: for example, OPT, HTB and RTR. Therefore, it contains three television receivers, which are made in the form of monitors with screens 18-20 in the form of cathode ray tubes, three demodulators 8-10, which are connected to the receiving antenna 7. The number of demodulators corresponds to the number of simultaneously received television programs and is equal to three. The television broadcast signal 6 through the receiving antenna 7 is fed to the input of each of the demodulators 8-10, which converts it to the standard signal of the television program it plays and selects its video and audio components, that is, the demodulator 8 selects the audio and video components of the ORT, demodulators 9 and 10 NTV and RTR, respectively. Each video component from the outputs of the demodulators 8-10 through its communication channel 12-14 enters the corresponding screen 18-20 of the television receiver through the switching matrix 11 and reproduces the visual information of one of the programs of ORT, or NTV, or RTR, respectively. The presence of the switching matrix 11 allows any of the three programs allocated by demodulators 8-10 to be shown on any of the three monitors

Each audio component of ORT, NTV, RTR from the outputs of the respective demodulators 8-10 through its communication channel 21-23 is fed to the input of the sound mixing console 24, from the output of which the mixed audio signal is fed to the input of the amplifier 25 and then to the input of the sound portal 26. Sound mixing the console allows you to play audio information of any of the three programs in any sequence or at the same time.

Figure 2 presents the television transmitting device 4, which contains three sources of information 27-29, which are two television cameras, and a computer. Their output signals in analog form are sent to a video server 30, connected to one, which is converted by a modulator 31 into a digital signal, which is transmitted via television broadcasting to a receiving antenna 7 of a television receiver 2 similar to the previously described. The television receiver 2 contains three television receivers 33-35, which are made in the form of monitors with screens in the form of cathode ray tubes, three demodulators 36-38, which are connected to the receiving antenna 7 at the input. Demodulators 36-38 have audio and video outputs. The switching matrix 42 is connected by communication channels to the outputs of demodulators 36-38 through three decoders 39-41 and to the video inputs of television receivers with screens 33-35. By switching the toggle switches of this matrix, the matrix outputs are connected to the screens. Any of the matrix outputs can be connected to any device screen.

The audio signal from the output of the decoders 36-38 goes to the input of the mixing console 43, where the mixing of audio components. Then, from the output of the mixing console 43, it enters the input of the amplifier 44, and from its output to the input of the sound portal 45. It is possible to control the video image and the sound signal using video monitors 46 and 47 and a sound monitor 48.

The proposed method and system for transmitting and receiving audiovisual information allows you to expand the functionality of television broadcasting to show television programs that stimulate a sense of complicity among the creators, participants of the program and the viewer by simulating direct communication of the program participants located in different studios of the same channel and / or in studios of different television channels and / or in another place and script combined in a single television program of television broadcasting. In addition, the invention allows to enhance the artistic and informational impression on the viewer of the created television programs. The creation of such a solution is carried out in the simplest and cheapest way.

Claims (9)

1. A method for transmitting and receiving audiovisual information, including converting audiovisual information of at least two television programs into signals of television channels and transmitting them via television broadcasting, receiving television broadcasting signals and reproducing audiovisual information on a television receiver, characterized in that they reproduce simultaneously audiovisual information at least two television programs, while the received television broadcast signals are converted into a hundred standard signals of reproduced television programs, separate video and audio components in each of them, then reproduce visual information of each video component on the currently free screen of one of the at least two television receivers, and the audio information is reproduced by transferring all audio components to the audio device. 2. The method according to claim 1, characterized in that the audiovisual information of at least one television program is converted into a television channel signal in digital form, which is preliminarily formed by mixing at least three analog signals from information sources, while the visual information of each information source is reproduced on the currently free screen. 3. The method according to any one of claims 1 and 2, characterized in that when reproducing the audiovisual information, the video image and the audio signal are monitored. 4. A system for transmitting and receiving audiovisual information, comprising a television receiving device connected via television broadcasting channels to a television transmitting device, characterized in that the television receiving device comprises television receivers with screens, the number of which corresponds to the number of simultaneously received television programs, demodulators connected by their inputs to receiving antenna, a switching matrix to which the video outputs of the demodulators are connected, with each of the television the receivers are connected to the receiving antenna through the switching matrix and the corresponding demodulator, an audio mixing console, the inputs of which are connected respectively to the audio outputs of the demodulators, an amplifier connected to the output of the sound mixing console, and a sound portal connected to the output of the amplifier. 5. The system according to claim 4, characterized in that the tele-transmitting device contains at least three sources of audiovisual information, a video server connected to its inputs with information sources, a modulator connected to the output of the video server and a generator, the signals being converted to digital form by the modulator, are transmitted via transmitting antennas to the receiving antenna of the television receiver, and the television receiver further comprises decoders, the input of each of which is connected to the output of the corresponding demodulator, soy in parallel with the receiving antenna, and the demodulator signal is digitally fed to the input of the corresponding decoder, where it is converted to analog form and the video and audio components are extracted, then the video components are fed to the input of their own television receiver through the switching matrix, and the audio components are sent to the sound mixing console. 6. The system according to any one of paragraphs.4 and 5, characterized in that the screen of the television receiver is made in the form of a cathode ray tube, or a monitor, or a plasma panel, or a projection screen. 7. The system according to any one of paragraphs.5 and 6, characterized in that the information source is made in the form of a television camera, or video recorder, or computer. 8. The system according to any one of claims 4 to 7, characterized in that it further comprises control video monitors and sound monitors. 9. A television receiver comprising a connected television receiver and a demodulator, characterized in that it further comprises at least one television receiver and one demodulator, the total number of television receivers and demodulators corresponding to the number of simultaneously received television programs, in addition, the television receiver contains a switching matrix to which the video outputs of the demodulators and the inputs of the television receivers are connected, an audio mixing console, the inputs of which are are respectively connected to the audio output demodulator, amplifier coupled to the output of the audio mixing console, and sound portal coupled to the output amplifier.

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