The device decodes the dtmf signals
(57) Abstract:Usage: electronics. The inventive device includes a filter 1, a comparator 2, the register 30, the delay element 7, four counter 5, 9, 16, 18, two elements And 3, 8, two OR element 11, 15, Comparer 14, the dispenser 22, subtractive unit 13. To improve noise immunity in the device entered the block elements And the five elements OR 17, 19, 21, 26, 31, two elements And 4, 25, unit 23 element OR key block 27, block 29 elements OR block 10 initial setup, unit 6, dividing frequencies, two delay elements 20, 24. 1 Il. The invention relates to radio engineering.The aim is to increase noise immunity.The drawing shows a block electrical diagram of the proposed device.The device comprises a filter 1, a comparator 2, the first element And 3, the third element And 4, the first counter 5, the block division frequency 6, the first delay element 7, the second element And 8, the second counter 9, block 10 initial setup, the first element OR 11, block 12 elements And subtractive block 13, block 14 comparison, the second element OR 15, the third counter 16, the third element OR 17, the fourth counter 18, the fourth element OR 19, the second delay element 20, prestoy element OR 26, key block 27, a persistent storage device (ROM) 28, block 29 elements OR, the register 30, the seventh element OR 31.The device operates as follows.By pressing one of the L buttons (L is the number of signals used in the communication system) selects the signal used in the communication system at the moment. Buttons are rigidly connected to the inputs of the address selection EP appropriate zones ROM 28. In each zone the ROM 28 is written in binary code structure code sequence of one of the signals. After pressing one of the L button opens the corresponding key and information one of the areas of the ROM 28 is transferred to the register 30. Simultaneously, the signal from the key through the element OR 31 is supplied to the clock input of register 30. Because the case is parallel to D-triggers when the signal at its clock input is the simultaneous entry into all cells of the register code number stored in a particular area of the ROM 28. Thus this device is tuned to a specific signal. Assume that the device works with trichostatin signal (M=3). Press L button from the ROM 28 in the register 30 has recorded the code structure of the signal 3,1,2. The device is configured for operation with a signal of the source clock frequency, which generates pulses with a frequency of 2M (M is the highest frequency in the structure of the signal). Device synchronization sinteziruet the source clock frequency with the receipt of the signal. When you turn on the terminal And receive a signal through the differential element and the elements OR 11, 17, 19 lists all the counters and the distributor 22 levels in the initial state, namely the momentum of the initial installation is fed to the inputs S, R counters 5, 9 through the element OR 11, the inputs S, R of the counters 16, 18 through the OR element 17 and to the input of the distributor 22 through the element OR 19. This means that when receiving a pulse counting input of the counter will count the number of them in the order received, for example 1,2... etc., No other permissions counters do not need. Same for the distributor 22 levels. Upon receipt of the first pulse on the clock input From the distributor level 22 distributes it in the first channel (first), second in the second channel (the second exit) and so on, No other permissions of the distributor 22 is not necessary. Moreover, the signal on the specific output of the distributor 22 operates continuously as long until the next pulse at its input.Combine the realities 22. The time delay element 20 is t3= To/2. This first clock pulse supplied to the first output of the distributor level 22, which is connected to the second inputs of elements And unit 23, the input of which is connected to the first cell of the register 30. Thus information from the first cell of the register 30 through the block 23 elements AND / OR receives on a second input unit of frequency division 6, in particular to the input of the decoder unit 6, the signal at the output of which is on one of the M outputs, depending on the binary combinations received from a cell of the register 30. Therefore, the second input element And 3 will be received pulses with a frequency two times less than the clock. In addition, information from the first cell of the register 30 through the block elements AND / OR 23 and a delay element 24 (delay time tC= T/2) is supplied to the entrance of the subtractive unit 13.Input passed wideband analog filter 1, is supplied to the comparator 2. The signal at the output of the comparator will be in if arriving at its input signal has exceeded some pre-determined level. For example, this level is equal to zero. Then in the moments corresponding to the positive half-waves of the incoming signals at the output of the comp the Torah input element And 3, will be supplied to an inverse input element And 4 and to the input of the delay element 7. As to the second input element And 3 will be received pulses are thinned clock frequency, the output element And 3 will receive signals corresponding to only the positive half-waves of the useful signal. The time delay element 7 is set to a single text. After a delay element 7 signal through the element And 8 is supplied to the second input element And 4. Output element And 4, the signal will be when the presence of a signal from the element And 8 and no signal on the inverse of the input. Thus at the input of the counter 5 will be received pulses, fixing the transition from the positive half wave of each frequency to the negative. Simultaneously, the counter 9 counts the number of clock pulses. When counting the number of pulses is equal to 2M counter 9 outputs a signal to read through the item And 12 in binary code the number counted during this time, the counter 5 counts (which corresponds to the nominal frequency structure of the signal). This number in binary code is supplied to the subtractive input unit 13. Simultaneously, the signal from the counter 9 is supplied to the subtractive input unit 13 and the input unit of comparison 14. In addition, the same signal through the element OR 11 results in and is our input unit 14, zero (a consequence of the denomination of the accepted frequency and recorded in the cell case 30), in the presence of the signal at the input of this device appears in the output signal, which is registered by the counters 16 and 18. If the difference is not zero, the fact that comparison is only registered by the counter 16. The comparison is not constant, and only the control signal from the counter 9.Therefore, when the counting by the counter 9 2M clock pulses at the outputs of block 14 receive pulses which are counted by the counters 16 and 18. In addition, the output signal of the counter 9 through the element 21 is supplied to the clock input of the distributor level 22, which distributes it to the second output. This output is connected to second inputs of elements And unit 23, the input of which is connected to a second cell of the register. Thus information from the second cell of the register through the block elements AND / OR 23 is supplied to the second input of the frequency division 6, to the input of the decoder. Therefore, the second input element And 3 will be received pulses with a frequency of 6 times lower than the clock, and over the duration of a frequency f1to the second input element And 3 will go just 1 pulse, which will be recorded by the counter 5. In addition Use block. The delay is necessary in order to subtractive block happened subtraction codes previous frequency structure of a signal are counted by the counter 5, and read from the cells of the register 30. Further processing is carried out according to the same algorithm. For the third frequency structure of the signal to the second input element And 3 will be received pulses with a frequency three times less than the clock. Only during the third frequency to the second input element And 3 will go two impulse.The counter 16 counts the total number of frequencies in the structure of the signal in the calculation of the M frequencies produces a signal on an item And 25. In the case when the structure of the received signal and the copy of the signal stored in the register 30, the same, the counter 18 will register M is zero difference, at the output of this counter is a signal, which indicates that the received QH signal varies. Otherwise, the counter 18 will not work, that will lead to the appearance of the signal at the output of the element And 25, which shows that adopted DF signal is not consistent with this device. When this signal through the OR element 26 is bringing the device to the initial state (reset counters 5, 9, 16, 18, pria to the first output). The DEVICE is DECODING MULTI-frequency SIGNALS containing the filter, the output of which is connected to the comparator input, the register, the first delay element, the first, second, third, fourth counters, the first and second elements And the first and second elements OR, block compare, allocator, subtractive unit, characterized in that the block elements And the third and seventh elements OR, third, and fourth elements, block element OR block key block elements OR block the initial installation, the block division frequency, the second and third delay elements, moreover, the output of the comparator is connected to the first input of the first element And the output of which is connected to the negative input of the third element And through the first delay element to the first input of the second element And whose output is connected to the direct input of the third element And whose output is connected to the counting input of the first counter, the output of which is connected to the first input of the block elements And the second input, the first input of the fifth element OR the first subtractive inputs of the block, the block comparison, the first element OR is connected to the output of the second counter, the counting input of which the second input of the second element And the first input unit of frequency division and United AOM first element OR the output of block initial installation is connected with the first inputs of the third and fourth elements OR the second input of the first element OR the third input, the second input of the third element OR the second input of the fourth element OR is connected to the output of the sixth element, OR the first input and the inverted input of the fourth element And is connected to the output of the fourth counter, which is the first output, a second output which is the output of the fourth element And connected to a second input of the sixth element OR the output of block elements And is connected to the second subtractive input block, the output of which is connected to the second input of the comparison, the first and second outputs of which are connected respectively with the first and second inputs of the second element OR the output of which is connected to a counter input of the third counter, the input of the initial installation of which the counting input of the fourth counter connected to the output of the third element OR the second output unit of comparison is connected to the input of the initial installation of the fourth counter, the output of the third counter connected to the direct input of the fourth element And the fourth element OR via a second delay element connected to the second input of the fifth element is that element OR, the output of the distributor connected to the first input of the block elements AND OR, the output of which is connected to the second input unit of frequency division and through the third delay element with a third subtractive input block, output block division frequency is connected to the second input of the first element And the outputs of the block of keys connected to inputs of the unit's permanent memory and the sixth element OR the output of which is connected to a clock input of the register, the output of which is connected to the second input of block elements AND / OR outputs of the unit's permanent memory through the block elements OR connected to information inputs of the register.
FIELD: radio communications.
SUBSTANCE: in multi-frequency system base station, using a certain set of frequencies for communication and sending data in multiple frequency bands, includes first transfer subsystem for sending synchronization channel message on one bearing frequency from set of preferable frequencies, at least an additional transfer system for transferring remaining data components on other bearing frequency. Mobile station in multi-frequency communication system contains control processor, providing for functioning of subsystems of receiver in accordance to data, contained in message of synchronization channel.
EFFECT: higher efficiency.
6 cl, 8 dwg
FIELD: radio communications.
SUBSTANCE: system has transmitting portion, which contains clock pulse generator 1, first and second D-code generators 21-22, first and second generator of double frequency manipulation 31-32, adder 4, modulator 5, frequencies synthesizer 6, pseudo-random numbers generator 7. said portion is connected through broadcast line 8 to receiving portion, which has demodulator 9, frequencies synthesizer 10, pseudo-random numbers 11, signals selector 12, clock pulses generator 13, block for selecting additional series 14, block for folding additional series 15, solving block 16. new set of significant features provides for possible implementation of distributed receipt with code structure of specific orthogonal quadruple-encoded series without expansion of available frequency resource.
EFFECT: broader functional capabilities, higher trustworthiness, higher efficiency, higher interference resistance.
2 cl, 5 dwg
FIELD: mobile telecommunication systems.
SUBSTANCE: device for decreasing relation of pike power to average power signal, sent along N(=2r) sub-bearing lines in transmitting device, having encoders for block encoding of w input data, where r - real number > 2, and output of N code symbols, has: serial-parallel converter for transforming data flow to w-(r-2) parallel data flows, where w - length of information word, first coder for receipt of w/2 parallel data flows from w-(r-2) parallel data flows from serial/parallel converter, block encoding of w/2 parallel data flows and output of N/2 first code symbols, generator of input operators for generation of r-2 data flows of input operators, in accordance to w-(r-2) parallel data flows, and second coder for receiving parallel data flows from serial/parallel converter, which were not received at first coder and (r-2) data flows from input operators, block encoding of received data flows and output of N/2 second code symbols, while r-2 data flows of input operators provide for complementarity of N code symbols.
EFFECT: higher efficiency, higher reliability.
6 cl, 22 dwg
FIELD: communication engineering, possible use for engineering and production of synchronous and asynchronous communication systems as system for transferring discontinuous information, in communication channels with unstable parameters and leaping frequency readjustment under effect from intentional pulse interference.
SUBSTANCE: system consists of transmitter portion, which has clock pulse generator, Different-code generator, generator of double frequency manipulation signals, modulator, frequencies synthesizer, pseudo-random numbers generator, connected via broadcast pipe to receipt portion, which has demodulator, frequencies synthesizer, pseudo-random numbers generator, signals selector, clock pulse generator, block for selecting additional series, first and second two-channeled synchronized filters, first and second subtracter, interference compensator and resolving block.
EFFECT: higher resistance to interference and trustworthiness under effect from intentional pulse interference in communication channels with random parameters of signal for systems with code compression of signals and systems with multiple access.
2 cl, 8 dwg
FIELD: radio engineering, possible use in fiber-optic communication systems.
SUBSTANCE: device has commutator, k-1 delay blocks, branch device, multi-branch delay line, k-1 transformers of pulse series, law-setting block, block for processing optical signal and solving block.
EFFECT: increased resistance to interference or increased length of regeneration portion of fiber-optic communication line.
3 cl, 6 dwg
FIELD: engineering of devices for generating series of preamble with low ratio of pike to average power in communications system with orthogonal multiplexing and frequency separation of channels.
SUBSTANCE: in accordance to method, first series of preamble is generated, wherein odd data of input series of preamble are transformed to zero data, and even data of aforementioned series are transformed to nonzero data, first series of preamble is transmitted through one of two antennas, second preamble series is generated, wherein even data of input series of preamble are transformed to zero data, and odd data of aforementioned series are transformed to nonzero data, second series of preamble is transmitted through another antenna.
EFFECT: increased efficiency.
6 cl, 10 dwg
FIELD: radio engineering.
SUBSTANCE: device implementing proposed method designed for use in pseudorandom operating frequency tuning radio communication systems and in monitoring systems of the latter has first and second band filers 1 and 3, respectively, first and second multipliers 2 and 16, respectively, demodulator 4, first, second, third, and fourth delay lines 4, 5, 7, and 9, respectively, adjustable frequency synthesizer 6, first, second, third, and fourth spectrum analyzers 10, 11, 12, and 13, respectively, first and second subtracters 14 and 15, respectively, comparator 17, and maximal higher-than-threshold component searching unit 18.
EFFECT: ability of signal reception and demodulation in case of a priori uncertain pseudorandom operating frequency tuning program.
2 cl, 8 dwg
FIELD: technology for exchanging digital data with usage of transfer system based on multiplexing with orthogonal frequency division of channels, including at least one transmitter, and receivers.
SUBSTANCE: method includes selection of operation mode in transmitter from at least one mode, while each operation mode is associated with a number of active carriers for transferring useful data, selection of interlacing symbol in aforementioned selected operation mode, usage of symbol interlacing in transmitter in relation with data element blocks, display of interlaced elements of data on active carriers of aforementioned selected operation mode, receipt of interlaced data elements in receiver, recognition in receiver of symbol interlacing symbol used during data transfer, selection of reversed interlacing symbol in receiver for match with recognized interlacing symbol and reverse interlacing in receiver of received data elements by means of selected reverse interlacing symbol.
EFFECT: increased stability of system due to efficient correction of errors.
4 cl, 9 dwg
FIELD: technology for processing digital signals.
SUBSTANCE: in digital multi-frequency transmitter-receiver during receipt signals are simultaneously decimated and roughly converted with frequency decrease in iteration process for narrowing received broad range of frequency down to required channel, and during transmission signals are interpolated iteratively for receiving required frequency of digitization and width of frequency band.
EFFECT: provision of processing of digital signal at digitization frequency of analog-digital converter.
6 cl, 21 dwg
FIELD: the invention refers to the field of radio liaison particularly to arrangements and modes for definition of logarithmic likelihood ratio for turbo codes and the metrics of embranchment for convolutional codes at using preliminary coding.
SUBSTANCE: the technical result is reduction of the effect of multiplication of errors achieved because multitude of signal elements is received. At that the signal element contains the totality of modulation symbols out of the totality of coded bits, the first subset of signal elements for which the bit has the first meaning and the second subset of signal elements for which the bit has the second meaning are defined. At that the first and the second subsets are signal elements out of an extended signal group. The probability that the bit equals the first meaning or the second meaning depending from the received signal element is defined, then the symbol of flexible decision of possibility that the bit equals the first meaning or the second meaning is defined. At that the symbols of flexible decision may be represented by the logarithmical likelihood ratios.
EFFECT: reduces effect of multiplication of errors.
38 cl, 7 dwg
FIELD: remote control technologies.
SUBSTANCE: device has means for sending/receiving phone calls from/to phones, included in mobile and fixed communication systems, recording means for storing multiple (n) phone numbers, control means, made with possible determining and allowing receipt of signals, coming from multiple phone machines, recording device for storing multiple (m) numeric phone codes, providing a match between codes (m) and appropriate phone number from set (n), a set of output channels, made with possible connection to appropriate external executing mechanisms (A1, A2, An), a set of input channels, made with possible connection to appropriate external sensors (S1, S2, Sn), while device checks and recognizes matches between identification number of calling phone (n) and numeric code number (m), dialed by this calling phone, and also launches predetermined functions through mentioned output channels on basis of match between numeric codes (m) and codes from another set of numeric codes (u).
EFFECT: higher efficiency.
17 cl, 6 dwg
FIELD: remote control system containing several (N) non-synchronized transmitters, which transmit appropriate signals.
SUBSTANCE: method for transferring appropriate signals to receiver is characterized by aforementioned signals having repeated dispatching periods, which are divided by pauses and are repeated with mutually different repeating period, in which dispatching periods have similar duration BL and each dispatching period contains a packet of data.
EFFECT: decreased mutual interference of transmitters.
4 cl, 11 dwg, 2 tbl
FIELD: radio engineering, namely radiolocation, possible use for determining inclination distance from upper-air radio-probes by radio-impulse methods, and also possible use for tracking distance to upper-air radio-probes.
SUBSTANCE: in accordance to invention, ground-based radiolocation station is used to dispatch query signal to an upper-air radio-probe, which, by means of ultra-regenerative transmitter-receiver is amplified and reemitted towards radiolocation station, where query and response signals are compared, delay times between them are determined and, on basis of delay time, distance to upper-air radio probe is determined. As query signal, coherent query radio impulses are used, which synchronize the radio impulse phase of ultra-regenerative transmitter-receiver. Comparison of query and response signals is realized by means of a phase detector.
EFFECT: decreased power of radiolocation station query signal transmitter, increased resistance of complex to interference and increased concealment of operation of ground-based radiolocation station.
FIELD: method for controlling access to closed rooms.
SUBSTANCE: in accordance to the invention, communication system comprises first receiver-transmitter (102), second receiver-transmitter (106) and remotely controlled server (104). In accordance to the method, telecommunication connection (300) is set up from first receiver-transmitter to remotely controlled server; electronic form (302) is transferred from first receiver-transmitter to remotely controlled server to open the lock; the form includes a digital signature and authenticity certificate for the user of first receiver-transmitter; message (306) is transferred from remotely controlled server to the second receiver-transmitter to confirm receipt of electronic form, where the message includes authenticity certificate of user of first receiver-transmitter; command (314) to open the lock is transferred from second receiver-transmitter to the remotely controlled server and at least one lock (318) is opened.
EFFECT: increased safety of access to closed rooms.
2 cl, 3 dwg
FIELD: wireless data transmission.
SUBSTANCE: method for remote telemetry is claimed in wireless communication system comprising telemetric device, mobile device and central controller, while the method includes stages, at which information is received from telemetric device by means of mobile device through ad-hoc network (one-rank network with unrestricted structure), received information is transferred to central controller by means of mobile device, and during transmission of received information that information is transferred during the period of non-intensive load, and received information is transferred to central controller of at least one ad-hoc network.
EFFECT: improved system for reading telemetric data.
4 cl, 3 dwg
FIELD: information technologies.
SUBSTANCE: invention refers to automated control system engineering. The declared switch contains decision feedback device with connected series channel "Request", channel "Error", and control solver units, switch signal shaper and execution unit. Control solver contains request and error counter, error and request number comparator, running request counter, running request counter reset circuit, running error counter, running error counter reset circuit, time relay. And switch signal shaper contains AND and OR elements. Execution unit contains parallel triggers and relay.
EFFECT: design of channel automatic switch providing higher efficiency of information transmission considering reduced down time of equipment in request mode to make reasoned decision of reserve channel connections.
FIELD: information technologies.
SUBSTANCE: in suggested method measurement start time will be obtained included into "Measurement start time" field of frame of measurement request and start time interpretation for certain element measurement defined by "Status" field value, comprising each "Measurement request element" field of measurement request frame. Additionally measurement start time of measurement request frame is determined using value of time synchronisation function (TSF) timer or by its part to eliminate indeterminacy in interpretation of reported start time.
EFFECT: compensation of indeterminacy in requested measurements start time.
21 cl, 10 dwg
FIELD: physics; computer engineering.
SUBSTANCE: invention relates to telemetric data transmission systems. Proposed is a method of transmitting telemetric data over open networks which support TCP/IP and UDP when telemetric devices are located in a segment of local private addresses, and the dispatch server is on a public network accessible for telemetric devices through a network address translation (NAT) server. An interface with a local private address is created for the telemetric server, where the said address belongs to the network of telemetric devices, assigned for sending control instructions, which include communication establishment instructions, to telemetric devices.
EFFECT: increased functionalities of telemetry network.
FIELD: information technologies.
SUBSTANCE: rotary device inclues remote control panel (RCP), at the same time RCP is arranged with the possibility to generate and send infrared signal, and rotary support, which comprises the following components joined to each other - memory module arranged with the possibility to store signal selected on RCP as signal of support rotation, detector of RCP angular position arranged with the possibility to detect value of accurate and inaccurate angular position of RCP by its infrared signal, module for detection of support rotation angle, arranged with the possibility to provide signal on inaccurate detection of angular position of RCP to indicator of inaccurate rotation angle arranged with the possibiltiy to inform the user on the fact that RCP prior to rotation was located outside zone of accurate direction finding, and on the fact that user shall again send infrared signal from panel for accurate rotation of support, at the same time module for detection of support rotation angle is also arranged with the possibility to detect angle of support rotation by value of accurate or inaccurate angular position of remote control panel, motor driver is arranged with the possibilty to generate control signal at least by one motor in compliance with a certain angle of support rotation, and at least one motor is arranged with the possibility to rotate rotary support by angle of rotation in compliance with signal of motor control, besides detector of RCP angular position comprises computing unit, at least two photodetectors connected to computing unit, and at least two transparent scattering plates illuminated with flow of RCP infrared signal radiation and arranged in various planes at the angle to each other, at the same time brightness of back surface of plate, which is remote from RCP depends on angle of radiation flow incidence at plate, besides each plate is arranged in front of according photodetector arranged with the possibiltiy to register brightness of plate back surface and transfer of brightness signal into computing unit arranged with the possibiloity to calculate angular position of RCP on the basis of brightness signals produced from photodetectors, at the same time computing unit is arranged with the possibility to calculate inaccurate angular position of RCP, if flow of remote control panel signal radiation gets onto one plate, and to calculate accurate angular position of remote control panel, if flow of RCP signal radiation gets onto at least two plates.
EFFECT: expansion of functionality of rotary device with remote control.