KR100799416B1 - A device for multiplexing and demultiplexing of signal information in optical transmitter - Google Patents

Abstract

The present invention relates to a circuit for error-free mixing and separation of signal information signals of subscribers in an optical transmission apparatus, and includes a plurality of clock signals, frame pulses, and channel time slots divided by a clock signal and a frame pulse applied from the optical transmission apparatus. A clock unit for outputting a mask signal; A plurality of matching units for recording and outputting signal information signals inputted from individual subscribers for each channel into allocation bits according to a clock signal applied from the clock unit; An insertion unit for mixing the signal information signals of the plurality of subscribers applied from the plurality of matching units, respectively, by a channel timeslot, and outputting them in one path; It is characterized in that it comprises an extraction section for receiving a channel time slot, a mask signal, a clock signal from the clock unit, and the signal information of a plurality of subscribers is mixed and divided into a signal signal for each channel to output the signal applied in one path, The circuit can be cheaply constructed, timely production and supply of necessary quantities can be performed, and the reliability of demultiplexing signal information of each subscriber channel without error can be improved.

Description

Signal information multiplexing and demultiplexing device of optical transmission device {A DEVICE FOR MULTIPLEXING AND DEMULTIPLEXING OF SIGNAL INFORMATION IN OPTICAL TRANSMITTER}

1 is a block diagram of a general optical transmission device,

2 is a detailed functional configuration diagram of an optical transmission device signal unit according to the prior art;

3 is a functional configuration diagram of a signal information multiplexing and demultiplexing apparatus according to the present invention;

4 is a detailed circuit diagram and timing diagram of a clock unit and a matching unit according to the present invention;

5 is a detailed circuit diagram and timing diagram of an inserting portion according to the present invention;

6 is a detailed circuit diagram and timing diagram of the extracting unit according to the present invention.

          ** Explanation of symbols on the main parts of the drawing **

10: switch 20: daylight transmitting device

30: optical cable 40: terminal optical transmission device

50: subscriber 60,600: signal unit

62: channel controller 64: multiplexer

66: demultiplexer 70: subscriber

80: control unit 105,106,107,131,132: inverter                 

101,102,103,104,123,124,125,133,134: AND gate

108,111,112,113,114,115,116,117,118,119,120,121,122: OR gate

135,136 pre-flop 610 clock portion

620: matching part 630: insertion part

640: extraction unit

The present invention relates to a circuit for multiplexing (MULTIPLEXING) and demultiplexing (SIGNAL) signal information of each subscriber by a public communication network in an optical transmission device, and in particular, multiplexes the signal information signal of each subscriber without error (ERROR). And a circuit for demultiplexing.

Since the optical transmission device has a high signal transmission speed, it is possible to transmit signals of multiple subscribers at the same time and at high speed.The optical transmission device receives the spotlight as the next generation communication equipment by the above advantages, and simultaneously transmits the signals of multiple subscribers. To this end, multiplexing (MUX: MULTIPLEXING) technology for mixing and transmitting the signals of multiple subscribers in one path and demultiplexing (DEMUX: DEMULTIPLEXING) technology for separating the mixed signals into respective subscriber signals are required. .

As described above, a signal transmitted by optical multiplexing and demultiplexing includes a ring signal, a charging signal, a hook-on signal, a signal for controlling incoming and outgoing signals, such as a hook-off signal. (SIGNAL) There is an information signal and a subscriber information signal of voice or data to be transmitted by each subscriber.

Signals multiplexed and demultiplexed as described above are processed separately from signal information generated by a public communication network and subscriber information, and the present invention relates to the processing of signal information used for call establishment in a public communication network.

Hereinafter, a signal information multiplexing and demultiplexing processing apparatus of a conventional optical transmission apparatus will be described with reference to the accompanying drawings.

Attached to explain the prior art, FIG. 1 is a block diagram of a general optical transmission device, and FIG. 2 is a detailed block diagram of an optical transmission device signal unit according to the prior art.

Referring to FIG. 1, the general optical transmission apparatus includes: a switch 10 which receives a plurality of subscribers and transmits signal information and subscriber information to each subscriber through a switched corresponding path;

It is connected to the switch 10 and multiplexes signal information and subscriber information applied from multiple subscribers and transmits them as optical signals, and signals received as optical signals are demultiplexed into signals of respective subscribers. The central optical transmitter (COT) which processes the signal information in the signal unit 60 and the subscriber information in the subscriber unit 70 under the control of the control unit 80 by transmitting to the exchange 10 which is the reverse direction. : CENTRAL OFFICE TERMINAL) (20),

An optical cable 30 connected to the central optical transmission device 20 for transmitting corresponding information of multiple subscribers as a high-speed optical signal of 155 Mbps;                         

Demultiplex (DEMUX) processing of the signal received by the optical cable 30 is connected to the optical cable 30 and separated into signal information signal and subscriber information signal of each subscriber and output to each subscriber through the corresponding path at the same time from each subscriber to the corresponding path By multiplying the applied signal information and subscriber information (MUX) and transmitting them as optical signals, the signal information is processed by the signal unit 60 under the control of the control unit 80, and the subscriber information is processed by the subscriber unit 70. A terminal optical transmission device (RT: REMOTE TERMINAL) 40,

Subscriber 50 is connected to the terminal optical transmission device 40 for transmitting and receiving a communication signal.

In addition, referring to FIG. 2, the signal unit 60 according to the related art includes a channel controller 62 for controlling multiplexing and demultiplexing of signal information applied through a corresponding channel from a plurality of subscribers;

A multiplexer (MUX) 64 for multiplexing (MULTIPLEXING) signal information of a subscriber applied by the control of the channel controller 62;

It is composed of a demultiplexer (DEMUX) 66 for demultiplexing the subscriber's signal information under the control of the channel controller 62,

Hereinafter, a signal information multiplexing and demultiplexing apparatus according to the related art having the above configuration will be described in detail with reference to the accompanying drawings.

The exchange 10 accommodates a plurality of subscribers, and when receiving a dialing signal for calling the other party through a corresponding channel of the plurality of subscribers, sets the PATH by corresponding switching and performs the corresponding signal information and subscriber information. And transmits the signal information and subscriber information to the subscriber through the processing and switching of the signal received from the daylight transmission device 20 at the same time.

The daylight transmitting apparatus (COT) 20 divides signals of a plurality of subscribers received from the switchboard 10 into signal information and subscriber information, and under the control of the controller 80, subscribes to each signal unit 60. Multiplexing through the magnetic part 70 (MUX), and converts the multiplexed (MUX) electrical signal as described above to an optical signal, for example, and outputs to the optical cable 30 as a high-speed optical signal of 155 Mbps.

Upon receiving the optical signal transmitted through the optical cable 30 as described above, the terminal optical transmission device (RT) 40 converts the optical signal into an electrical signal, and under the control of the control unit 80, the signal unit 60. ) Is applied to the subscriber unit 70, and the corresponding signal unit 60 demultiplexes the signal information for each subscriber channel (DEMUX), and the corresponding subscriber unit 70 reverses the subscriber information for each subscriber channel. Multiplexing is transmitted to the subscriber 50 through the corresponding path.

Since the signal unit 60 and the subscriber unit 70 corresponding to each of the main light transmitting apparatus 20 and the terminal light transmitting apparatus 40 have the same configuration and function, the same member number will be described.

The signal output from the subscriber 50 is processed in the reverse direction and multiplexed for each channel by the corresponding signal unit 60 and the subscriber unit 70 of the terminal optical transmission device 40, and converted into optical signals to convert the optical cable 30. The optical signal of 155 Mbps transmitted through the optical cable 30 is received through the main optical transmission device 20 and demultiplexed for each channel and applied to the exchanger 10 so that the exchanger 10 can receive the optical signal. It is transmitted to each subscriber by the corresponding switching of.

The subscriber signal is largely divided into signal information and subscriber information, and the subscriber information is composed of voice information or data information to be transmitted by the subscriber, and the signal information includes a call bell or ring signal and a communication path. It consists of a charging signal for charging for occupancy and a hook-on and hook-off signals. For example, two bits are transmitted.

The signal unit 60 for processing the signal information will be described in detail with reference to FIG. 2. The signal applied as an optical signal or an electrical signal is analyzed by the channel control unit 62 to transmit a signal through multiple channels from multiple subscribers. In the case of an applied signal signal, the signal must be multiplexed (MUX) in order to be transmitted in one path. Output multiplexed (MUX: MULTIPLEXING) for transmission.

In addition, the channel controller 62 analyzes the optical signal or the electric signal input to the signal unit 60, and when the signal signals of multiple subscribers are mixed and multiplexed (MUX) signal information signal, the multiplexed (MUX) In order to separate and demultiplex the signal signal for each channel (CH) from the signal information, it is controlled to be applied to the demultiplexer (DEMUX) 66, and the demultiplexer 66 corresponds to the corresponding control signal. DEMULTIPLEXING and outputting signal of each subscriber by channel.                         

However, the signal unit 60 according to the related art has a problem of using a multiplexer (MUX) 64 and a demultiplexer (DEMUX) 66, which are relatively expensive.

In addition, since the multiplexer 64 and the demultiplexer 66 as described above are not demanded and are used in limited applications and devices, there is a problem that it is difficult to secure necessary quantities in a timely manner.

It is an object of the present invention to provide a signal information multiplexing and demultiplexing device which is inexpensive and easily secured using gates which are generally used.

It is also an object of the present invention to provide an apparatus for multiplexing and demultiplexing signal information without generating an error.

In order to achieve the above object, the present invention includes a clock unit for receiving a clock signal and a frame pulse applied from the optical transmission device, and outputs a plurality of divided clock signals, frame pulses, channel time slots, and mask signals; A plurality of matching units for recording and outputting signal information signals inputted from individual subscribers for each channel into allocation bits according to a clock signal applied from the clock unit; An insertion unit for mixing the signal information signals of the plurality of subscribers applied from the plurality of matching units, respectively, by a channel timeslot, and outputting them in one path; A channel time slot, a mask signal, and a clock signal are received from the clock unit, and the signal unit of the plurality of subscribers is mixed to include an extraction unit for dividing and outputting a signal applied for each channel into a signal signal for each channel; The signal information signal of the corresponding channel applied from the matching unit is output by the corresponding channel timeslot signal applied from the clock unit.

Hereinafter, the signal information multiplexing and demultiplexing apparatus of the present invention will be described with reference to the accompanying drawings.

3 is a functional configuration diagram of a signal information multiplexing and demultiplexing apparatus according to the present invention. FIG. 4 is a detailed circuit diagram and a timing diagram of a clock unit and a matching unit according to the present invention. 5 is a detailed circuit diagram and a timing diagram of the multiplexer according to the present invention, and FIG. 6 is a detailed circuit diagram and a timing diagram of the demultiplexer according to the present invention.

3 to 6, a signal information multiplexing and demultiplexing apparatus of an optical communication device according to the present invention will be described with reference to the accompanying drawings.

Referring to the accompanying drawings, the multiplexing (MUX) and the demultiplexing (DEMUX) device for mixing the signal (SIGNAL) information of the optical communication equipment according to the present invention, the signal information signal transmitted from multiple subscribers by mixing Signal portion of the optical transmission device for high-speed transmission through the line (LINE) or path (PATH) of the, includes a clock unit 610, a plurality of matching unit 620, insertion unit 630, extraction unit 640 do.

The clock unit 610 receives a clock signal and a frame pulse (FP: FRAME PULSE) applied from the optical transmission device and outputs a plurality of clock signals, frame pulses, and a plurality of channel time slots and mask signals divided at a predetermined ratio. . For example, the clock unit 610 receives an 8 M clock signal and a frame pulse FP from the optical transmission device, and receives a clock signal of 2M, 1M, and 512K signals CLK and a frame pulse (FP: FRAME PULSE). A plurality of channel time slots (CHTS1..n: CHANNEL TIME SLOT) signals and mask A and MA (MASK_A, MASK_B) signals are output as mask signals, respectively.

The plurality of matching units 620 records signal SIGNAL information input from individual subscribers for each channel in the allocated bit BIT according to a clock CLK signal applied from the clock unit 610 and outputs the information for each channel. do. The plurality of matching units 620 may include a first inverter 107 connected to ground to output a high level signal; A second inverter 105 for inverting and outputting the 1M clock applied from the clock unit 610; A third inverter 106 for inverting and outputting the 2M clock applied from the clock unit 610; Two input terminals receiving a high level signal from the first inverter 107 and a first end gate 101 of four input terminals receiving a 1 M clock signal and a 2 M clock signal from the clock unit 610, respectively. ); A high level signal is input from the first inverter 107, a low level signal is received from ground, and a clock of 1 M is received from the clock unit 610. A second end gate having four input terminals, each of which receives a CLOCK signal and receives a clock signal of 2 M inverted from the third inverter 106; A high level signal is input from the first inverter 107, a 1 M clock signal inverted from the second inverter 105, and a 2 M clock signal is input from the clock unit 610. A third end gate 103 of four input terminals respectively receiving a second B BIT signal SIGNAL; A high level signal is input from the first inverter 107, a 1 M clock signal inverted from the second inverter 105, and a 2 M clock signal inverted from the third inverter 106. A fourth end gate 104 of four input terminals receiving a first input signal and receiving a first A BIT signal signal; The first or gate gates 108 may receive the outputs of the first to fourth AND gates 101, 102, 103, and 104, respectively, and perform OR operations, respectively, and output the signal as a signal signal of a specific channel.

The inserting unit 630 mixes a plurality of subscriber signal SIGNAL information signals applied from the plurality of matching units 620 by respective channel timeslots CHTS1..., One path. Multiplex (MUX) to output The inserting unit 630 receives OR signals of the signal signal SIGCH output for each channel from the matching unit 620 and the corresponding channel time slot CHTS signal output from the clock unit 610. Outputting second to thirteenth gates 111, 112, 113, 114, 115, 116, 117, 118, 119, 120, 121, 122; A fifth AND gate 123 that receives and outputs an AND signal from the second to ninth OR gates 111, 112, 113, 114, 115, 116, 117, and 118 and outputs the AND signal; A sixth AND gate 124 which receives and outputs an output signal of the tenth to thirteenth OR gates 119, 120, 121, and 122 and a high level signal to the remaining input terminals; ; The seventh AND gate 125 receives the output signals of the fifth and sixth AND gates 123 and 124, performs an AND operation, and outputs the mixed signals (MSIG) information signals.

The extractor 640 receives a plurality of channel time slot (CHTS) signals, a mask signal, a clock signal, and a clock signal from the clock unit 610, and a plurality of subscriber signal (SIGNAL) information is mixed. The signal input to PATH of the signal is divided into the signal signal for each channel and output. The extractor 640 may include: a fourth inverter 131 that receives the clock signal from the clock unit 610 and inverts and outputs the clock signal; A fifth inverter 132 that receives the corresponding channel time slot (CHTS) signal from the clock unit 610 and inverts and outputs it; An eighth end gate 133 that receives the corresponding channel timeslot CHTS inverted from the fifth inverter 132, receives an mask ratio MASK_B signal from the clock unit 610, and performs an AND operation to output the AND signal. ); A ninth AND gate that receives the corresponding channel time slot (CHTS) signal inverted from the fifth inverter 132, receives an MASK_A signal from the clock unit 610, and outputs an AND operation. 134); A clock signal received from the fourth inverter 131 and outputting input mixed signal (MSIG) information under control by an enable (CE: CHIP ENABLE) signal applied from the ninth end gate 134; 1 preflop 136; The second preflop 135 receives a clock signal from the fourth inverter 131 and outputs mixed signal MSIG information input by an enable signal applied from the eighth end gate 133. . The mask A signal is a signal for extracting the first bit signal of the signal information, and the mask ratio signal is a signal for extracting the second bit signal of the signal information.

Hereinafter, the signal information multiplexing (MUX) and demultiplexing (DEMUX) apparatus of the optical transmission apparatus will be described in detail with reference to the accompanying drawings.

Multiplexing (MUX) to mix communication signals applied from multiple subscribers through an exchange, for example, to convert to 155 Mbps optical signal and demultiplexing (DEMUX) to separate the signals transmitted and received at high speed through the corresponding optical cable again The main optical transmission apparatus (COT) or the remote optical transmission apparatus (RT) for converting and outputting each subscriber signal is separated into signal information and subscriber information for transmission processing.

The present invention relates to a circuit device of the signal unit 600 which multiplexes signal information of a plurality of subscribers (MUX) and outputs them as an optical signal and demultiplexes signal information received from the optical signal into signal information of each subscriber. .

The signal unit 600 includes a clock unit 610, a matching unit 620, an insertion unit 630, and an extraction unit 640. The clock unit 610 receives a frame pulse (FP: FRAME PULSE) signal and an 8 Mbps clock signal from the optical transmission device, and notifies the start of a frame and a clock signal of 512 Kbps, 1 Mbps or 2 Mbps. A frame pulse (FP) signal, a time slot (CHTS) signal for each channel, and a mask signal for demultiplexing (DEMUX) are output.

The matching unit 620 is configured for each subscriber channel, and displays signal information applied to each subscriber unit using 2 bits, and displays 8 bits of signal information of each subscriber channel represented by the 2 bits. BIT) is written in the first bit and the second bit of the BYTE unit signal.

The signal information may include a ring or ring signal for communication of a subscriber channel signal, a billing signal for calculating a royalty as a subscriber occupies a communication path at a switch, a hook-off signal for communicating, It consists of a hook-on signal that does not communicate. That is, the signal information informs the counterpart subscriber of a change in the state of the subscriber.

As described above, the signal information signal composed of 2 bits for each subscriber channel is applied to the matching unit 620 and output as an 8-bit channel signal. Among the two bits of signal information, the A-BIT signal, which is the first signal information, is applied to the fourth AND gate 104 to become the first bit in 8-bit units, and the non-bit (B-) second signal information. BIT) is applied to the third AND gate 103 to become the second bit in 8-bit units.

By connecting one input terminal of the second AND gate 102 to a ground to which a low-level signal is always applied, such that '0' is always written in the third bit of the byte (BYTE) unit, The two inputs are connected to a HIGH-LEVEL signal which is always output from the first inverter so that '1' is always written in the fourth bit of the byte unit signal, and the other two inputs have 2 Mbps and 1 Mbps The signal is input either directly or through a third inverter 106.

The matching unit 620 as described above records signal information in the first two bits of the byte unit, and writes 0 and 1 in order of the remaining 2 bits to record 4 bits, and the remaining 4 bits of the remaining ends are matched as described above. The unit 620 is repeatedly configured to be recorded in one time slot (TIMESLOT) in units of bytes.

As described above, the inserting unit 630 receiving the signal information recorded in the timeslot for each subscriber channel by the matching unit 620 is mixed to transmit the signal information for each subscriber channel to one channel (MUX). MULTIPLEXING).

The insertion unit 630 includes, for example, 12 of the second to thirteenth ore gates 111 to 122, and the configuration of the above example multiplexes signal (SIGNAL) information of 12 subscriber channels (MUX). )

The OR gates 111 to 122 constituting the insertion unit 630 are output from the clock unit 610, and apply channel time slots (CHTS1,, n) signals specifying respective channels. Only when receiving, by outputting the signal information signal of the channel from the matching unit 620, the signal information for each channel is output in the specified order.

As described above, subscriber signal information input from 12 subscriber channels is ANDed and output using the fifth end gate 123 and the sixth end gate 124 having eight inputs, and the sixth end gate is four. Since only four input stages are used, the remaining four input stages always input a high-level (HIGH-LEVEL) signal.

In addition, the multiplexed mixed signal information MSIG, which is output from the fifth and sixth gates 123 and 124, may be applied to the seventh and gates 125 and output in one path. )

The timing diagram processed as above is shown at the bottom of FIG.

The mixed signal information (MSIG) as described above is converted into an optical signal and transmitted through the corresponding optical cable, and when received by the receiver, it is received by the extraction unit 640 of the signal unit 600 as in the present invention. .

The extractor 640 separates and demultiplexes mixed signal information (MSIG) multiplexed with signal information of multiple subscribers into signal information for each subscriber channel.

Referring to FIG. 6, the extractor 640 simultaneously applies the mixed and multiplexed signal information signal to the data terminals D of the first and second preflops 135 and 136, respectively, A clock signal output from the unit 610, for example, a clock signal of 2 Mbps is input, and a byte (by a mask A / B signal output once per time slot from the clock unit 610). BYTE) reads and outputs the signal (SIGNAL) information consisting of the first bit and the second bit among the 8 bits of the corresponding time slot (TS).

That is, the above process is repeated from channel timeslot 1 (CHTS1) to channel timeslot 12 (CHTS12), thereby demultiplexing and outputting signal information of 12 subscriber channels according to the example. do.

The present invention having the above-described configuration, the AND gate, the OR gate, the inverter gate (INVERTER GATE) and the pre-flop (FF: FLIP FLOP), which are generally distributed at a low price and are easy to procure. Since it is configured by using, the circuit device that multiplexes and demultiplexes the signal information can be inexpensively constructed, and at the same time, the parts can be easily procured.

According to the present invention having the above-described configuration, in a circuit apparatus that mixes, multiplexes, and separates and demultiplexes signal information for multiple subscribers of an optical communication equipment, the circuit is inexpensively configured by constructing a circuit with a low-cost gate part. There is an industrial use effect that can be done.

In addition, by using a gate that is inexpensive and mass-distributed, there is an industrial use effect that allows timely production and supply of necessary quantities.

In addition, since the signal information for each subscriber channel is demultiplexed and outputted without error by using a clock unit for outputting a frame pulse and a mask signal, there is an industrial use effect of improving the reliability of a processed signal.

Claims (5)

A clock unit which receives a clock signal and a frame pulse applied from the optical transmission device and outputs a plurality of divided clock signals, frame pulses, channel time slots, and mask signals; A plurality of matching units for recording and outputting signal information signals inputted from individual subscribers for each channel into allocation bits by a clock signal applied from the clock unit; An inserting unit for mixing the signal information signals of the plurality of subscribers applied from the plurality of matching units, respectively, by a channel timeslot, and outputting them through one path; A channel time slot, a mask signal, and a clock signal are received from the clock unit, and the signal information of a plurality of subscribers is mixed to divide the signal applied through one path into a signal signal for each channel, and output the divided signal; And the inserter outputs a signal information signal of a corresponding channel applied from the matching unit according to a corresponding channel timeslot signal applied from the clock unit. The signal information multiplexing and demultiplexing circuit of the optical transmission apparatus. The method of claim 1, wherein the matching unit, The signal information applied from the subscriber is composed of 2 bits, The A-bit signal corresponding to the first bit of the signal information is recorded in the first bit of the channel time slot in bytes. The non-bit signal corresponding to the second bit of the signal information is recorded in the second bit of the channel time slot in bytes. The third bit of the channel timeslot in bytes always writes 0, The fourth bit of the channel timeslot in bytes always writes 1, And remaining bits of the channel timeslot in byte units repeatedly record the bits. delete The method of claim 2, wherein the extraction unit, A channel-specific signal inputted from the clock unit to receive a mask-a signal for extracting the a-bit signal and a mask-ratio signal for extracting the non-bit signal, and multiplexed and input by the mask-a signal and the mask-ratio signal A signal information multiplexing and demultiplexing circuit of an optical transmission device that reads and outputs a first bit signal and a second bit signal of an information signal. The method of claim 2, wherein the clock unit, The clock signal and the frame pulse are received from the optical transmission device, and a plurality of clock signals, frame pulses, a plurality of channel time slots, a mask A signal for extracting the A bit signal, and a mask ratio signal for extracting the non-bit signal are obtained. And a signal information multiplexing and demultiplexing circuit of the optical transmission device.

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