RU1942U1 - DEVICE FOR TRANSMISSION OF ADDITIONAL AUDIO INFORMATION - Google Patents

Abstract

DEVICE FOR TRANSMISSION OF ADDITIONAL AUDIO INFORMATION on a broadcast television channel, consisting of a transmitting part connected by a communication channel to a receiving part, which contains a subscriber decoder, the first input of which is connected to a communication channel, and its output is connected to the first input of a video data decoder, one of the inputs the outputs of which are connected to the input-output of the PVEM of the receiving part, and the second input-output of the video decoder is connected to the input-output of the control unit, day or night, characterized in that in the reception part of the input has an input and output for audio information controller input / output of audio information connected to the input-output with input / output PVEM, a video signal analyzer, the output of which is connected to the input of the control unit, day or night, and a clock analyzer for data transmission, output which is simultaneously connected to one of the inputs of the audio input / output controller and to the second inputs of the video data decoder, video analyzer and subscriber decoder, the first input of which is also connected parallel to the inputs of the video signal analyzer and the analyzer of the clock frequency of digital data transmission, and the transmitting part consists of a video signal shaper, a clock generator, a control unit, a data read gate shaper, a data exchange controller, an audio information input-output controller having an input and output for audio information, and PVEM, the input-output of which is parallelly connected to the inputs and outputs of the control unit of the audio input / output controller and the data exchange controller, the output of which is connected to

Description

Device for transmitting additional audio information

The proposed technical solution relates to the technique of television and can be used to transmit additional audio information on the broadcast television channel.

A device for transmitting television signals by autosvid. G5GGP No. I68I405, which is used to transmit two television programs with additional audio compression. The device contains a RAM block for television and sound signals, blocks for combining the transmitted information, a synchronizer, asynchronous tracking blocks, a clock memory block, a summing block, and delay elements. Along with the complexity of the equipment, it has limited functionality due to the limited information transfer rate, since the signals are converted in the interval of the blanking pulse.

Closest to the claimed technical solution is a subscriber terminal device for a limited group of users according to the Federal Republic of Germany patent No. 3927304. It contains a subscriber's decoder to the input of which a video signal is received from a communication channel; the output of the subscriber’s decoder is connected to the input of the video data decoder, the first input - the output of which is connected to the input - output of the control unit for day or night switching; the second input is the output of the video decoder given to application No. 92011405/09

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ny, the first input - the output of which is connected to the input-output of the control unit day or night; the second input is the output of the video decoder data is connected to the input output of the PC. The device operates as follows.

The normalized image signal received from the communication channel and containing digital data is fed to the input of the subscriber's decoder. The decoder analyzes the digital stream, and allows access and information received by a limited circle of users of subscriber devices, revealing / decoding / subscriber signal. The subscriber signal now available for processing is fed to a video data decoder, which extracts digital data from the video signal and outputs it to the PC. If the transmission is carried out at night, when the broadcast of television messages is completed, the day or night power control unit puts the video decoder into night power mode, and the reception of information is possible not only in the frame blanking / on the fly /, but also on the fly, which makes it possible to increase the amount of transmitted digital information without changing the clock frequency of the digital stream. However, in the process of work, there is a need to change the clock frequency and digital data transmission due to a change in the state of the transmission path. For example, if the level of interference in the high-frequency part of the spectrum of the transmitted signal has increased, or the bandwidth in the transmission path to the lower frequency region has decreased, then it is necessary to reduce the clock frequency so that a large fraction of the energy of the transmitted signal is redistributed to the low-frequency part of the spectrum and neither high-frequency noise, nor

Moreover, the higher attenuation in the region of higher frequencies no longer had a significant effect on the digital data signal. If the conditions of the signal passage in the transmission path are close to ideal, then it is desirable to increase the clock frequency in order to more fully realize the channel capacity and increase the amount of transmitted information. In addition, sometimes it is possible to transmit in direct motion not only at night, when there is no broadcasting, but also at short time intervals, when broadcasting takes place, using a small number of forward lines for a short time without much damage to the whole image.

The inability to quickly change the clock frequency of digital data transmission of the device selected as a prototype, as well as its inability to transmit directly while broadcasting television programs and transmitting additional audio information reduces its functionality.

The proposed technical solution allows to expand the functional capabilities of the device.

The above is achieved in the proposed device by the fact that in a known device containing a decoder of a subscriber on the receiving side, the output of which is connected to the first input of the video decoder, the first input and output of which is connected to the input - output of the control unit, day or night, the second input is the output of the video decoder data is connected to the input-output of the PC, and the first input of the decoder V 920iiWЈ

pa of the subscriber is the input of the receiving part of the device, a video analyzer is introduced, an input-output controller of audio information having an input and output of audio information and a digital data clock analyzer, the input of which is connected to the first input of the decoder is a subscriber and to the first input of the video signal analyzer, output which is connected to the input of the control unit, day or night, the output of the analyzer of the clock frequency of the digital data transmission is connected respectively to the second input of the subscriber's decoder, w the first input of the video data decoder, and one of the inputs of the input / output controller of audio information and with the second input of the video analyzer, in addition, the input - output of the input / output controller of audio information is connected to the input output of the PC.

On the transmitting side of the device, a video shaper, a clock generator, a control unit, a strobe gate for reading data, a data exchange controller, an input / output controller for audio information having an input and output for audio information, and a PC are input, and the first output of the video shaper is connected to the first input of the sync generator , the second input of the clock is connected to the first input of the control unit, bidirectional input - the output of the control unit is connected to the bidirectional input-output of the PC, with bidirectional nym input - output data communication controller, and input - output controller deduces the input sound information, the second control unit output is connected to a first input of the read data strobe output of which is connected to the first input controller Ob

yen with data, the output of the sync generator is connected respectively to the input of the control unit, with one of the inputs of the audio input / output controller, with the second input of the data gate strobe driver, with the second input of the data exchange controller, the output of the data exchange controller is the same with the first input of the video signal shaper, the second input of the video shaper is the input of the transmitting part of the device, the second output of the video shaper is the output to the communication channel.

The inventive combination of features of the device allows you to expand its functionality.

When studying the well-known technical solutions in this technical field identical to the claimed object of the totality of signs were not identified. This solution differs from the known ones.

The inventive solution can be implemented on modern devices and components and is industrially applicable.

The attached drawing explains the essence of the device. In FIG. Its functional diagram is shown, where it is indicated:

1- PC,

2- input of audio information,

3- input controller - output of audio information,

4- data exchange controller,

5 shaper data reading strobe,

8 - output of audio information,

9- video input,

10-shaper video signal

11- communication channel

12- subscriber decoder,

13 - video analyzer,

14 - input audio information,

15- control unit day or night inclusion,

16- video data encoder,

17 - analyzer clock frequency of digital data transmission,

18- controller input-output audio information

19 - output of audio information,

20- PC,

A is the transmitting part of the device,

B - the receiving part of the device.

The device comprises transmitting A and receiving B parts connected by a communication channel II.

On the transmitting side of the device there is a PC I, which is connected with a bi-directional input / output controller 3 audio input / output controller 3, with a data exchange controller 4 and with a control unit b. One of the outputs of the latter is connected to one of the inputs of the clock generator 7, the output of which is connected simultaneously to one of the inputs of the data exchange controller 4, to the input of the shaper 5 of the data reading strobe, to one of the inputs of the audio input / output controller 3 and to the input of the control unit 6 . The other output of the control unit b is connected to the second of the inputs

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shaper 5 strobe reading data, the output of which is included on the second of the inputs of the controller 5 data exchange. The audio input / output controller 3 has an input 2 and an output 8 of a sound frequency. The device has an input 9 of video information input to the shaper 10 of the video signal, the second input of which is connected to the output of the controller 4 data exchange. One of the outputs of the video shaper 10 is connected to the second of the inputs of the clock 7, and the second is connected to the communication channel II.

On the receiving side B of the device, the communication channel II is connected simultaneously to one of the inputs of the video analyzer 13, to one of the inputs of the detectors of the subscriber 12 and to the input of the analyzer 17 of the digital data transmission clock frequency. The output of the analyzer 17 is connected in parallel to one of the inputs of the input / output audio information controller 18, to one of the inputs of the video decoder 16, to the second of the inputs of the subscriber 12 and to the second of the inputs of the video analyzer 13, the output of which is connected to the input of the 15-day control unit or night inclusion. The control unit 15 with one bi-directional input - output is connected to one of the bidirectional inputs-outputs of the video data decoder 16, to which of the inputs of which the output of the decoder 12 is connected. The second bi-directional input-output of the video data decoder 16 is connected to a bi-directional input — the output of the PC 20 and a bi-directional input — the output of the input / output controller 18 of the audio information, which has an input 14 and an output of 19 audio information.

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The device works as follows. The television signal from the output of the camera or the camera channel in the conditions of the telecentre is fed through input 9 to the video signal shaper 10, intended for mixing into the TV - a digital information signal and extracting synchronization reference signals from the TV input signal.

The selected reference signals from the output of the video signal shaper 10 are supplied to one of the inputs of the clock 7. working in the slave mode and forming its own complete grid of synchronization reference signals / lines, fields /, in phase with the input synchronization signals. In addition, the clock 7 generates a connected grid of clock signals designed to form an additional stream of digital information. From the output of the clock 7, the line, field and clock signals are respectively sent to the synchronization input of the control unit b, to the input of the shaper 5 of the data reading strobe, to the input of the data exchange controller 4 and to the input of the audio input / output controller 3. The control unit b, receiving input from the output of information from the PC I, sets the control code at the output, which is fed to the second input of the clock 7 and sets a certain clock frequency for transmitting digital data.

The control unit b, receiving information from the PC I, exposes control codes on its other output, which are input to the shaper 5 of the data reading strobe and determine the numbers of those lines in the intervals of which digital data will be transmitted. Shaper 5 strobe chats / UWWZ ё

The data generator forms control strobes on the intervals of those lines whose codes it received at its input from the control unit b, and gives them from its output to the input of the data exchange controller 4 Data exchange controller 5, receiving them from PC I through a bi-directional input-output to in parallel form, places them sequentially in the intervals of those lines where the strobes received from the shaper 5 of the data reading strobe are located. The placed information is clocked by the clock frequency received from the clock 7 through the input of the controller 4 for data exchange, thereby converting the parallel code into a serial one.

The generated serial data stream from the output of the controller 4 data exchange is fed to the input of the shaper 10 of the video signal. The latter mixes the digital data stream into a complete video signal by level at those temporary positions at which this data entered it.

Audio processing has two solutions. In the first of them, the incoming information to the input of the audio input / output controller 3 is converted into digital form in it and transmitted via a bi-directional input to the PC I, where an array of digital audio data is organized as a data file on a hard drive / hard or floppy disk I /. Upon completion of the supply of audio information, PC I transmits, if necessary, this file of digital audio data to the additional information transmission channel as ordinary digital data.

In the second mode, the audio information received at the input of the audio input / output controller 3 is converted into digital form in it and transmitted by a PC I by bi-directional input / output directly to the data exchange controller 4, which then transfers them to the communication channel through the shaper 10 as ordinary digital data.

In all cases, from the output of the shaper 10, the full television signal with the digital data stream contained in it enters the communication channel II. This arrangement of the transmitting part of the device allows you to place the transmitted additional information in any previously set line of the field or frame, and not just in the interval of the blanking frame. Everything is determined by the program and control by means of PC I,

On the upstream side of the device, the complete television signal along with digital data is fed through the communication channel II to the input of the subscriber decoder 12, to the input of the analyzer 17 of the digital data transmission clock frequency, and to the input of the video signal analyzer 13. The analyzer 17 of the clock frequency of the transmission of digital data automatically determines the clock frequency of the digital data stream and performs its automatic adjustment. The allocated clock frequency from the output of the analyzer 17 is supplied respectively to the input of the subscriber's decoder 12, to the input of the video decoder 16, to the input of the video analyzer 13 and to the input of the controller 18 - input / output of audio information. The decoder 12 of the subscriber, decoding the address part of the digital data, checks it against

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the address of the given subscriber device and in case of coincidence passes the incoming information to the input of the video decoder 16 data.

The video signal analyzer 13 determines in the input signal at its input those line intervals where the digital information is located, and at those time intervals it generates control gates at its output, which are received at the input of the control unit by 15 day or night switching, which in this line interval forms a resolution the code coming through a bi-directional input — the output of block 16 to the input — the output of the video decoder 16 data and allowing the decoding of the received information and its output through another input — the output of the video decoder ra 16 data in the PC 20,

At the end of the transmission of the image signal, the block 15, independently of the analyzer 13, puts the video decoder 16 of the data into the mode of receiving and decoding data throughout the field / in this case, the transmission of synchronization signals is preserved /. In the event that the clock frequency of the digital signal transmission is changed on the transmitting side due to changes in the state of the communication channel II, then the clock analyzer 17 will also be rebuilt and provide reception of digital data. If, however, strings are used in forward motion when transmitting the digital information, when the image signal is being transmitted, then in this case the video signal analyzer 13 will detect this, and this information will also be received without putting the entire video decoder 16 into night-time operation.

- / / fl / eto tit or Digital sound data for the first mode is accepted

like ordinary data, they are written to a magnetic disk in a PC 20. If necessary, stumps are given out through bidirectional input — output to the audio input / output controller 18, which converts digital data into the low-frequency voltage of the audio signal and outputs it from its output to the sound reproducing equipment.

In the second mode, the digital audio data allocated by the video decoder 16 data, using a PC 20 through a bi-directional input-output are sent byte-by-bit directly to the controller 18 input / output audio without recording to the hard disk. The controller 18 converts the digital information% and sound into the voltage of the sound signal and outputs it from its output 19 to the sound reproducing apparatus.

The sound input / output controllers 3 and 18 are identical. The output 8 of audio information from the controller 3 is used to control the recorded audio information in the PC I. The input 14 of the audio information of the controller 18 is used to generate sound special effects using the received sound files.

Compiled by x / Knyazev

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Claims (1)

DEVICE FOR TRANSMISSION OF ADDITIONAL AUDIO INFORMATION on a broadcast television channel, consisting of a transmitting part connected by a communication channel to a receiving part, which contains a subscriber decoder, the first input of which is connected to a communication channel, and its output is connected to the first input of a video data decoder, one of the inputs the outputs of which are connected to the input-output of the PVEM of the receiving part, and the second input-output of the video decoder is connected to the input-output of the control unit, day or night, characterized in that in the reception part of the input has an input and output for audio information controller input / output of audio information connected to the input-output with input / output PVEM, a video signal analyzer, the output of which is connected to the input of the control unit, day or night, and a clock analyzer for data transmission, output which is simultaneously connected to one of the inputs of the audio input / output controller and to the second inputs of the video data decoder, video analyzer and subscriber decoder, the first input of which is also connected parallel to the inputs of the video signal analyzer and the analyzer of the clock frequency of digital data transmission, and the transmitting part consists of a video signal shaper, a clock generator, a control unit, a data read gate shaper, a data exchange controller, an audio information input-output controller having an input and output for audio information, and PVEM, the input-output of which is parallelly connected to the inputs and outputs of the control unit of the audio input / output controller and the data exchange controller, the output of which is connected to one of the inputs of the video driver, to the other input of which video information is supplied, one of the outputs of the driver is connected to the communication channel, and the other is connected to the first input of the clock, the second input of which is connected to the first output of the control unit, the output of the clock is simultaneously connected to the inputs of the control unit, a shaper of a data reading gate, to the second input of which a control unit output is connected.