Device and method for processing signals selected from the set of data streams

 

The invention relates to digital data transmission. Device processing multiple data streams includes a receiver/processing module signal and the set of input signal paths, which are combined by the combiner. The output of the multiplexer is input to the receiver/processing unit of the signal. Commutator unit is associated with a set of input signal paths. Switch unit includes a switch connected to each input signal path. Each switch in response to the enable signal enables the spread data stream is connected to a corresponding input path to the combiner and to the receiver/processing unit of the signal when only one input signal path and the corresponding switch is turned on at a certain time. The technical result - reducing interference between multiple data streams. 3 N. and 19 C.p. f-crystals, 1 Il.

The technical FIELD,

This invention relates to digital data transmission and more specifically to a device and method for selecting from a set of data flows for the formation of some output.

BACKGROUND of INVENTION

Various types of information can be converted into digital form the corresponding digital data stream. In one location, you can take these digital radio frequency transmission from many sources. For example, the user may receive signals transmitted from one or more terrestrial transmitters. In addition, the same user may take a digital RF signals from one or more satellites. Regardless of the source of RF signals that contain digital data streams, each data stream must be processed at the location of the user to obtain useful information.

Transfer direct broadcast satellite (PSV) is one example of a digital radio frequency transmission. When transferring PSV digital signals on several different carrier frequencies transmitted from the satellite, and this set of carrier frequencies is the data flow. Spectrum presently allocated for transmission PSV, includes the range from 12.2 to 12.7 GHz. Each carrier frequency transmits data from several different discrete outputs, which in the case of PSV contain television channels. To use the data stream PSV entire data stream is captured by the corresponding antenna and frequency are transferred to an intermediate frequency, which is neither decodes the demodulated signals for the formation of the desired output signal, contains the input channel for the television receiver.

Description of the INVENTION

The aim of the invention is a device and method for selecting one data stream of the multiple data streams transmitted on one or several common frequencies, and processing the selected data stream.

For this purpose, the device according to the invention contains a lot of input signal paths to a single receiver/processing unit of the signal.

Switching block associated with the input signal paths, permit the passage of data flow only through one of the paths at a particular time to sink/block signal processing. Each input signal path can take a single stream of data comprising signals at one or more frequencies that may or may not be shared with frequencies of signals received at the other input paths. Allowing the passage of only one input path at a particular time, commutator block prevents interference total frequency signals between themselves. Moreover, all of the signals from each source can be processed by a single receiver/processing module signal that prevents the duplication of hardware signal processing in mestopolojenie one or more frequencies from a single source. The frequency or frequencies can be anything, including radio frequency and a lower frequency. For example, the data stream may contain signals transmitted at radio frequencies from the satellite, and may also contain the same signals after the transfer to the intermediate frequency. Also used the term "data" shall mean any digital data and is not limited to the data forming the output signal of a certain type. For example, data may include digital signals, necessary for the formation of television input signal to a standard television receiver. In another example, data may include digital signals representing the data transmission over the Internet. Another example of "data" can be a digital speech or phone information.

Commutator block contains the appropriate switches connected to each of the input paths. Each switch allows you to pass the data flow only in response to the enable signal supplied to the corresponding switch. In the absence of the enable signal corresponding to the switch blocks the flow of data on the corresponding input path. Many input paths combined by the combiner, having a single output that is connected to Kirovenergo input channel and processes the signals by way well known in the prototype, for the formation of the desired output.

The device according to the invention is associated with a separate RF receiving unit for each input signal path. Each of the radio frequency receiving unit includes an appropriate antenna for receiving signals from one transmitting source. Each of the radio frequency receiving unit also includes the corresponding Converter to convert the RF signals into intermediate frequency signals. Each individual data stream on the intermediate frequency signals is fed through one of the input circuits of the signal processing unit according to the invention.

In the preferred form of the invention the processing unit includes a controller to control the switching unit and the various components of the receiver/processing unit of the signal. The controller responds to user-driven selection input that is associated with specific data inside one of the input streams of data that can be processed for the formation of the desired output. In response to the select command, the controller retrieves from the storage device (storage) information on the input signal to control the switching unit and the information on the signal processing desene passing on the input signal path, which transmits the data stream containing the selected data. Processing information signal causes the receiver/processing unit of the signal is adjusted to the desired carrier frequency, transmitting the required data, demodulates the transmitted signals, and finally decodes the demodulated signals for the formation of the desired output.

These and other objectives, advantages and features of the invention will be clear from the following description of preferred implementations, when taken together with the accompanying drawing.

A BRIEF description of the DRAWING

The drawing is a diagram of a processing device of the multiple data streams that implements the principles of the invention.

DESCRIPTION of the PREFERRED IMPLEMENTATIONS

As shown in the drawing, the device processing multiple data streams 10 according to the invention accepts a single data stream to the first input path 11 and separate different data stream to the second input path 12. The device 10 includes a receiver/processing module signal 14 for receiving one of the two data streams and processes the data flow for the formation of the desired output channel from the received signals. Commutator block 16 allows only one data stream at a specific time which can be any place, where you can accept data streams from many sources. Data streams contain digital data transmitted from the signal source at the corresponding frequencies. Each data stream includes at least one carrier frequency, and preferably several carrier frequencies. Each carrier frequency transmits data that can be processed to obtain at least one output channel. In most cases, a single carrier frequency to transmit data that can be processed to obtain several different output channels. The term "output channel" is used in this description for convenience in describing the relevant data that can be used to obtain the desired output signal. For example, the output channel may be a signal suitable for use by the receiver. However, the application of the invention is not limited to the data streams containing the signals that make up the TV input.

In the illustrated example of the invention, signals from one radio frequency transmitter (not shown) are first antenna 21. The signal containing the transmitted data stream may be in any of the radio-frequency range is C, this frequency range is presently allocated for television PSV. RF signals, adopted by the first antenna 21 are routed to the low-noise block Converter (low noise block converter) LNB 23, where the signals are transferred to an intermediate frequency. The data flow in the intermediate frequency range is sent through the first input path 11 processing device 10. The intermediate frequency range may, for example, be from about 950 to 1450 MHz. It is possible that the intermediate frequency may be in a different frequency range, but the range of 950 to 1450 MHz is used for the purpose of illustration, as it corresponds to the intermediate frequency range, generated from signals PSV transmitted between 12.2 and 12.7 GHz.

The signals from the second radio frequency source (not shown) is taken from the second antenna 22 and is converted by the second low-noise block Converter LNB 24. LNB 24 converts the RF signals into intermediate frequency signals and sends the data stream to an intermediate frequency, the second input path 12 processing device 10.

The invention is not limited to signals taken from the source of a particular type. For example, one source may be a satellite, while the other is Nala can be companions or both can be ground-based transmitters. In any case, RF signals, adopted by the first antenna 21 and the second antenna 22 may include signals on the same carrier frequencies. Although in some cases the carrier frequency, adopted two RF receiving antennas 21 and 22 may be identical, in other applications of the invention two different set of signals may include only a few of the same carrier frequencies or may not have the same carrier frequencies, and each set may include other carrier frequencies, which are not included in the other set. When the RF transmission received by the antennas 21 and 22 have at least one common frequency, the signals can not be combined in a single tract distribution without interference. For example, the first antenna 21 is capable of receiving signals on the transmission frequency 12.2 GHz. The second antenna 22 may receive signals transmitted on the same frequency 12.2 GHz, but the transmission completely different data. In this case, if the signals from the two antennas 21 and 22 will be combined into a common signal path, the total frequency signals will interfere with each other.

Two input signal path 11 and 12 pass through the switch unit 16. Switch unit 16 includes first bistable amplifier is, the United States with the second inlet path 12. First off, the amplifier 31 is connected to receive the enable signal through the first line of resolution 33, while the second dip of the amplifier 32 is connected to receive the enable signal, served on the second line resolution 34. The output of the first bistable amplifier 31 and the output of the second bistable amplifier 32 are combining inputs of the amplifier 36. Combining amplifier 36 generates a combined output signal on output line 37. The elements 31 and 32 may include any suitable bistable amplifier or an active device, while uniting the amplifier 36 may include any suitable summing amplifier.

Dip the amplifier 31 operates, skipping the intermediate frequency signals or data stream received from the input circuit 11 only when the enable signal filed on power line resolution 33. Dip the amplifier 32 operates similarly, omitting the data flow intermediate frequency, received from the input circuit 12 only when the enable signal filed on power line resolution 34. When the enable signal is not served on the specific dip amplifier 31 or 32, the spiral is positional amplifier 31, or dip the amplifier 32 receives the enable signal on the corresponding line resolution 33 or 34, the flow of data on a corresponding input path passes by combining the amplifier 36 for delivery to the receiver/processing module signal 14 through line 37. Combining amplifier 36 generates signals corresponding impedance for the receiver/processing module signal 14. As will be shown in more detail below, only one of the dip amplifiers 31 and 32 included in a specific time. Thus, only one of the received data streams fed to the input of the receiver/processing module signal 14 at a particular time.

Receiver/processing module signal 14 receives one data stream from integrating amplifier 36 and produces the required output channel like TV set-top box direct satellite broadcasting, such as a receiver RCA DSS or DVB format. Receiver/processing module signal 14 includes full-function tuner and Converter with decreasing frequency 40, a demodulator 41, the decoder error correction (forward error correction (FEC) decoder) 42 and the demultiplexer/decoder format 45. Each of these elements is connected to the controller 43 and is controlled by the controller 43, which in the preferred form invented what exploits a suitable user interface, such as displayed remote control 44 and the receiver of the remote control signal 46, the controller 43 sends a permission signal to turn off the amplifier 31 or 32 associated with the input channel, transmitting the required data, choosing thus a corresponding data stream. The selected data stream is input to the receiver/processing module signal 14, and the controller 43 controls the tuner 40 to tune to a specific carrier frequency, containing the required data. Then the tuner 40 delivers the selected carrier frequency to the demodulator 41, which demodulates the selected signal carrier frequency for the education of signals containing all data sent to that particular carrier frequency. These data, which may typically include data for several different output channels, served on the FEC decoder 42, which is controlled by the controller 43 for correcting errors in digital data, which may occur during transmission. Then the demultiplexer/decoder format 45 operates under the control of the controller 43 for decoding data and separation of signals required data from other data to obtain the desired output channel. The selected output is Noah channel, such as a TV set or a computer, for example.

ZU 47 associated with the controller 43 stores the information necessary to control the various components of the receiver/processing module signal 14, as well as information for the switch unit 16. The stored information includes a channel identifier, unique to a particular channel or component data included in one of the data streams received over the input paths 11 or 12. For each channel ID memory 47 stores information about the signal path indicating which of the bistable amplifier 31 or 32 is required to enable it to pass the required data to the receiver/processing unit of the signal 14. For each channel ID memory 47 also stores information on the processing of a signal containing all the information required to operate the tuner 40, a demodulator 41, the FEC decoder 42 and a demultiplexer/decoder format 45 in order to produce the desired output channel. This information on signal processing and functioning of the tuner 40, demodulator 41, the FEC decoder 42 and demultiplexer/decoder format 45 is well known in the art and will not be further discussed here.

It should be noted that the device 10 displayed on istwa 10 can be made within the scope of the invention and the following claims. For example, although the drawing shows two input channel, any number of input channels can be included in a device that implements the principles of the invention. In addition, the invention is not limited to any specific frequency ranges or any specific range of intermediate frequencies.

Another important aspect of the invention is that the signals of two different input circuits 11 and 12 can transmit data in different formats, such as DSS, DVB or MPEG2 formats, for example. While the memory 47 stores certain information on the signal processing that allows the demultiplexer/decoder format 45 to decode the data, there is no limit to a specific data format that can be processed by the device 10.

Another variant form of the invention shown in the drawing refers to the switching unit 16. Although commutator unit is shown integrated with the receiver/processing module signal 14, the switches can be any suitable unit for selective blocking of the corresponding data stream, which can be located anywhere on the paths from the respective receiving antennas 21 and 22 to combining amplifier 36. These variants of the positions of the switches must p is not controlled by the controller 43, some other block should be included to enable the desired switch. For example, a simple manual switch can be used to control a switch for routing the requested data stream to the receiver/processing unit of the signal 14.

The user selects a specific output channel, which may include TV, or another type of data, providing the team selection for the controller 43, through the user console 44. The controller 43 responds to the select command, referring to the memory 47 to extract the necessary operational information. The controller 43 finds a channel identifier corresponding to the desired output channel specified by the select command, and retrieves all the information needed by the device 10 for processing the input data in order to obtain the desired output channel. This information includes information about the input signal, which allows the controller 43 to enable the appropriate dip amplifier 31 or 32 and to ensure that only the desired data stream to the receiver/processing unit of the signal 14. Information received from the memory 47, also includes information on signal processing for controlling operation of the tuner 40, demonomania the desired output channel on the output line 48. Since only one input signal path is allowed at a particular time, multiple data streams do not interfere with each other if they contain the signals on one or more of the total frequencies.

The above-described preferred implementation is introduced to illustrate the principles of the invention but do not limit the scope of the invention. Various implementations and modifications to these preferred implementations can be done by experts in the scope of the claims.

Claims

1. Device for receiving multiple data streams, including a first switch connected to the first input and having a first switch output, the first switch is adapted for selective transmission of the first stream of data signals from the first input to the first switch output, the first stream of data signals contains data of the first channel, a second switch connected to a second input and having a second switch output, the second switch is adapted for selective transmission of the second stream of data signals from the second input to the second switch output, and the second stream of data signals contains data mutator output and a second switch output, with the output of the multiplexer, the controller for receiving the command channel selection, aimed at the formation of the desired output channel of the data of the first channel or the second channel, and in response to the command channel selection uses the stored information of the input signal for the inclusion of two switches, which receives a data stream containing the data channel from which to form the desired output channel, and a storage device, operatively associated with the controller, and this storage device stores information of the first input signal indicating the appropriate switch, through which the accepted data of the first channel, and also stores information of the second input signal, pointing to the appropriate switch, through which the accepted data of the second channel.

2. The device under item 1, further comprising a processing unit of the signal, which is connected to receive data signals from the combiner data flows and in which the controller controls the operation of the processing unit of the signal to obtain a desired output channel of the data signals received from the combiner data streams.

3. The device according to p. 2, in which the storage device takiu processing the second signal to control the processing of data of the second channel.

4. The device according to p. 3, wherein the storage device stores additional information about the output channel, which includes an additional information processing to control the processing of additional data channel and additional information about the input signal of the switch through which appropriate additional data channel.

5. The device according to p. 2, in which the signal processing includes a tuner, demodulator, decoder and error correction demultiplexer/decoder format.

6. The device under item 1, in which the combiner data streams includes the amplifier impedance matching.

7. The device under item 1, in which the first input receives signals on the set of first carrier frequencies and the second input receives signals, at least one of the first carrier frequencies.

8. The device under item 1, further comprising a first antenna receiving signals from a satellite transmitter, and the first stream of data signals includes data received through the first antenna and the second antenna receiving signals from a terrestrial transmitter, and the second stream of data signals includes data received through the second antenna.

9. Eliminate the existing input path transmits various data streams, the system switches connected to multiple input paths for selective blocking of the corresponding data stream to each of the different input paths, the controller for receiving the command channel selection, aimed at the formation of the desired output channel of the data contained in one of the various data streams, and to respond to the command channel selection so that by engaging the stored information of the input signal block, at least one of the multiple data streams, which does not contain a data channel of which must be received by the required output channel, and a storage device, operatively associated with the controller, moreover, this storage device stores information output channel for each different output channel, which can be obtained from a variety of data streams and output channel for each of the corresponding output channel contains the information of the input signal of the input channel, through which are passed to the corresponding data channel.

10. The device according to p. 9, further comprising the processing unit of the signal, and where the controller controls the operation of the processing unit of the signal to obtain the desired withinformation output channel for each of the corresponding output channel further comprises information processing control signal for a block of signal processing in the processing data of the corresponding channel.

12. The device according to p. 11, in which the storage device also stores a set of identifiers of channels, each channel identifier is unique for the corresponding channel, and the information output channel for each of the corresponding output channel is unique for the corresponding channel ID.

13. The device according to p. 10, in which the signal processing includes a tuner, demodulator, decoder and error correction demultiplexer/decoder format.

14. The device under item 9, in which each data stream contains signals from a different antenna.

15. The device under item 9, in which at least two of the data stream contain the signals on a common carrier frequency.

16. The device according to p. 9, further comprising a first antenna receiving signals from a satellite transmitter and the first antenna transmits the signals on the first input path and the second antenna receiving signals from a terrestrial transmitter, the second antenna transmits the signals on the second input path.

17. The method of receiving multiple data streams, comprising the following steps: the direction of each of the multiple different data streams on different WaveStudio output channel, saving information output channel for each of the different output channels, which can be obtained from a variety of data streams and output channel for each of the corresponding output channel contains the information processing control signal for a block of the signal processing in the processing data of the corresponding channel, and the information of the input signal, which indicates the input channel, through which are passed to the corresponding data channel, receiving the command channel selection related to the desired output channel, which is one specific channel from a number of output channels, and the response to the command channel selection so so by enabling the stored information of the input signal block, at least one of the data streams that do not contain channel data, which must be received by the desired output channel.

18. The method according to p. 17 which further includes selecting a stored information output channel for the desired output channel in response to the command channel selection, and control of the power signal processing using the stored information on the signal processing for the desired output channel.

19. The method according to p. 18, dopolnitelnyefunktsii output channel for the desired output channel.

20. The method according to p. 17, in which each data flow is used, at least one carrier frequency.

21. The method according to p. 18, in which the control of the power signal processing includes setting processing unit of the signal at the carrier frequency of the data channel to obtain a desired output channel, the demodulation of the signals on this carrier frequency and decodes the demodulated signals to identify and select the data channel.

22. The method according to p. 17 which further includes receiving the data stream transmitted from a satellite transmitter, and the direction of data flow from satellite transmitter on the first input path, receiving stream data transmitted from a terrestrial transmitter, and the direction of data flow from a terrestrial transmitter, the second input path.

 

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