JPS59181797A - Line concentrating and distributing system - Google Patents

Abstract

PURPOSE:To constitute a system which causes no collision irrespective of a connecting position and a number of a line concentrating and distributing terminal by detecting a collision by a central device, and varying the sending-out time of a signal to each line concentrating and distributing terminal from the central device in accordance with this result of detection. CONSTITUTION:A receiver 51 converts a signal to which a diphase code is added to original information, and to a logical level. Both converted signal and the signal which is not converted yet are inputted to a control part 53. The detecting part 61 of the control part 53 detects a collision and a space-over between signals on a line concentrating transmission line 47 from an input signal to the receiver 51. Also, from an output signal of the receiver 51, the port 61 detects the line concentrating and distributing device 43 delivering a signal which caused the collision and the space-over. In accodance with the results of the detection, a delay time quantity in a delay time setting part 63 is set to every signal going toward each line concentrating and distributing device 43. The setting part 63 adjusts the timing of an output of a signal transmitted toward each line concentrating and distributing device 43 from a central device 41.

Description

[Purpose of the invention]

The object of the present invention is to eliminate the above-mentioned drawbacks and provide a flexible line concentration and distribution system. [Summary of the Invention] This invention consists of a solid device and a concentrator and distribution terminal. il
l! The back is connected by a pair of transmission lines, and the three solid devices are collected via the transmission line and sent from the gland distribution terminal.
．． The J-th transmitting means includes a first receiving means for receiving the signal received by the receiving means, and a J-th transmitting means for transmitting the signal received by the receiving means to the transmission path. Furthermore, the interval q between the first words received by the first receiving means
,) a collision detection means for detecting a collision, and a control means for controlling the timing of the signal sent by the first transmission means when a collision between signals is detected by the collision detection means. Acquisition/distribution Q: The IA terminal has a second receiving means that receives the signal from the first transmitting means of the solid device, and a second receiving means that sends the signal received by the second receiving means to the transmission path. including means for transmitting. In other words, "In the P actual device, a collision is detected, and based on this result, a signal is sent to the concentration distribution terminal (mink is corrected.) Since the transmission time of the signal from the medium fire device to each concentration distribution terminal is changed according to the detection result, there is no collision between one word going from each concentration distribution terminal to the east distribution device. (Moreover, the control depends only on the collision of signals,
There are no restrictions on the connection or location of the line distribution terminal. As described above, according to the present invention, regardless of the connection position or number of the seven gland distribution terminals, 1. A collision-free system can be constructed. [Embodiments of the Invention] A preferred embodiment of the present invention will be described based on the drawings. Fig. 3 shows a system according to this embodiment. The medium fire device 41 includes a concentrator transmission line 472.
A distribution transmission line 49 is exposed. A line concentrator and distributor 43 is connected to these transmission lines 47 and 49. The line concentration and distribution terminal in the claims refers to two line concentration and distribution devices 41 and at least one line concentration and distribution device 41 connected thereto.
He points at the hand, which consists of two terminals W45. For the sake of the following theory "S", the transmission line 47.49 has A,
, n, C, and p are connected to each other by 84 times. However, on the transmission line 47.49 of concentrator/distributor No. 43 and No. 11 of A, solid device 4 (
To be more precise, the transmitter and receiver 1 in the solid device 4) as described later.
It is assumed that it is connected to the farthest end (hereinafter referred to as far/junior point) from the end point. It is assumed that the east line distribution device 43 named D is connected to the end (hereinafter referred to as the near end point) closest to the C solid device 41 (same as above) on the transmission line 47.49. B +' C is 1t between the far end point and the near end point in this Ji number
In 1), it is assumed that Ji; is continued. Messages are sent and received between the solid device 41 and the plurality of east line distribution devices 43 via a pair of transmission lines 47 and 49. This is formed by time-division multiplexing by words equal to the number of concentrators and distributors 43. For example, on the distribution transmission line 49, ), one frame of number 471 is formed. Words (Ti) consisting of a synchronization signal part SOj and a data signal part DOi form one frame in a time-division manner as many times as there are line concentrators and distributors 43. The medium fire device 41"'C of this embodiment detects whether there is a collision or space over when No. 8 on the concentrator transmission line 47 inputs each other to the solid device 41, and sends each east Line distribution device/f
Controls the timing of sending signals to 3. First, the medium heat device 4) will be explained in detail using FIG. 4. The solid device 41 includes a receiver 5, controllers t111 to 35-3, a text exchanger 109, a multiplexing circuit 57, and a receiving signal 359. The signal on the east line transmission line 47 is input to the receiver 5. On the east line transmission line 47, from each concentrator distribution device 43 to the solid device 4
1 is time-division multiplexed n. These signals are subjected to one or more encoding and modulation methods. In this embodiment, signals on transmission lines J7 and 39 are subjected to die-phase encoding. A die-phase code is expressed by a level change at the center of a time slot, corresponding to a binary "0". For example, it is represented by changing from level 0 to level 0 or level level 0 to level 0 at the center of the time slot. 2M(jr'li is expressed by no level change over the entire time slot.For example, it is expressed by a signal that remains at 0 level, for example, a level.Also, there is always a level change at the break of the time slot.Furthermore, It is assumed that the output signal is held at the 0 level in the time domain where there is no signal to be encoded.Now, the signal sequence i-0101-1L0010j is transmitted through the concentrator transmission line 47 from time t to Ln. Suppose that the data is transmitted to the solid device 4). When a diphase code is applied to these signals, the waveform shown in FIG. 5(b) is obtained. FIG. 5(a) shows the breaks in time slots. The receiver 51 converts this artificially diphase coded signal into original information and converts it into a logic level. Both the converted signal (output signal of one receiver 5) and the unconverted signal (input signal to the receiver 51) are sent to the control unit 5-3.
Enter. The control section 53' consists of a kJ detection section 61 and a delay time setting section 6-3. The detection unit 6-1 detects a collision space over between signals on the concentrator transmission line 47'' from the input signal to the receiver 5. Further, from the output signal of the receiver 51, it is detected from which concentrator/distributor 43 the signal in which the collision or space over occurred is coming from. Depending on these detection results, the delay time setting section 6-3 sets the amount of delay time to the signal iσ directed to each line concentrator/distributor 43. The delay time setting unit (3 adjusts the output timing of the signal transmitted from the solid device 41 to each line concentrator/distributor 43. The detection unit 6-1 includes a synchronization signal detection circuit 6-5 and a collision detection circuit 67. , an inter-signal space over detection circuit 69, and a variable delay control circuit 71.The synchronization [1) signal detection circuit 65 includes the output of the receiver 5 (:
]K'"+" is input A1.This signal is, for example,
2nd signal section SJi and data signal section DIi
(However) are a and b. t, d, Jl?). As mentioned above, the synchronization (i) part S I a is a signal from the line concentrator/distributor 43 to the middle mounts 1 and 4. The synchronization signal copying detection Bi circuit 65 detects and outputs this synchronization (R x portion SIa) and notifies it to the variable delay control circuit 7 and the distribution circuit IQ7. - The input signal to the receiver 51 is input to the collision detection circuit 69, and the input signal to the receiver 51 is input to the input signal to the receiver 51. has been applied, resulting in the waveform shown in No. 6 NZI(b)K.As a feature of this (+j No. 451), when a significant No.
: This is the point. A signal having such characteristics is transmitted to two east line distribution devices 4.
Suppose that it occurs from 9. When the signals shown in FIGS. 5(d) and 5(e) are generated, sent to the concentrator transmission line 47, and inputted to at least the receiver 51, they have the waveforms shown in FIG. 5(f). That is, in some cases): overlap (collision) has occurred between the 12 signals. Naturally, the DC decrement is also increasing. The detection circuits 67 and 69 use such characteristics. The collision detection circuit 67 includes a low-pass filter (hereinafter abbreviated as LPF) 73, a first comparator 75, and a first mono-multivibrator 77. The inter-signal space over detection circuit 69 shares the LPF 7.3 described in "m", and the second
and a third comparator 79, 82, a timer 83, and a second mono-multivibrator 85. The signal shown in FIG. 5(f) is input from the concentrator transmission line 47 to the LPF'73. For this input, LPF7
From 3 to 4. ．． The signal shown in Figure 5 (g) is pressed. This signal is input to the first and second comparators 75.79. In the first comparator 75, a first threshold SH2 is set. This threshold value SH7 is R% for 4 minutes of 1G flow due to one signal.
Hayashi, set 1.5D for fD. The first ratio/articulation device 75'C outputs a signal "1" when the input signal is larger than the first threshold value SH7. That's the time of Nukt θ
The output is the signal rO-1. Go, medium heat device 54. When a collision occurs between the signals input to t, each signal has a DC component, so the output of LJ'F73 is 1.
It will be about twice as large. Therefore, when a collision occurs, the output of the first comparator 75 becomes "1". The output of the first comparator 75 is input to the first mono-multi-by-break 72. 1st comparison 'jut
When the output of 75 is a signal "1", the first mono multi-by-break 77 is set and outputs a predetermined Varne signal. This is collision detection number 87. The output r OJ K pt of the first comparator 75 is also rOJ. - The output of the LPF 73 is also sent to the second comparator 79. In the second comparator 79, the second threshold value S)
T2 is set. This threshold value SH2 is set to 0.5D. The second comparator 79 differs from the first comparator 75 in that L! When the signal from F73 is smaller than the second threshold, the signal "1 tatami" is output.
When the 'J2 force of the comparator 79 of t is the signal [1]
It, this tie 283 moves 1, and the percentage

[! Write down the contents. That is, LPF7. The time when the output of (is smaller than the second one-word value S H2J-
is output from. The output of LPF73 is the second threshold S H
/J-smaller state than 2 and 11. 5 collisions between two squares/. Indicates that there is no V-matching. If you change Zo, g = white (space) will be generated at 111 of the two signals °C
Show that there is. Now, the number A containing such information is inputted to the third compensator 81. In this third comparator 8, the third &
d value Sm is set. Third comparison if the input is thicker than the third threshold Sm? The output from No. 38 becomes "i". The third il (v & Sm is the maximum G- allowed as the space between signals. This is the transmission efficiency L
l or l) defined. In other words, if there is too much space between signals, it is true that there will be no collisions between the signals, but
Transmission efficiency deteriorates. The output of the third comparator 81 is input to the second mono multivibrator 85. The output of the third comparator 81 is []”
At this time, the second mono-multivibrator 85 is set. That is, the output 89 becomes a predetermined pulse signal. This is the space over detection signal. The collision detection signal 87° space over detection signal 89 thus obtained is input to the variable delay control circuit 71 together with the synchronization signal detection circuit. As shown in FIG. 7, the variable delay control circuit 71 includes a storage device 91, a storage content rewriting circuit 92, a decoding circuit 93, and AND circuits 95a to 95d. 96a to 96d and first to fourth reversible counters 97,
99, 101, and 103. Reversible counter 97,9
Outputs 9, 101, and 103 correspond to the outputs of variable delay control circuit 7. The output of the synchronization signal detection circuit 105 is input to the storage device 91 . The contents of storage device 91 are input to decoding circuit 93 . The decoding circuit 93 has four outputs 105a to 105d<
He's an old man. These outputs 105a to 105d are input to AND circuits 95a to 95d together with a collision detection signal 87, and a space over detection signal 89 and a memory content rewriting circuit 9 are inputted to AND circuits 95a to 95d.
Also enter 2. This storage content rewriting circuit 92 controls the storage device 91. Both AND circuits 96a to 96d
Enter. Further, the collision detection signal -87 is output from the AND circuit 95.
The outputs of a to 95d are the first to fourth reversible counters 97
It is input to the up count terminals 1 to 103. The outputs of the AND circuits 96h to 96d are input to the down count terminals of the first to fourth reversible counters 97 to 103. First reversible counter 97. AND circuits 95a and 96a form a pair to connect the solid device 4 to the line concentrator/distributor 43 called A.
0 will be explained in more detail. The storage device 91 has synchronization 5;
This signal is input to the detection circuit 65 where the synchronization signal detection signal is detected at L-). This signal (, 1 indicates a word number, and indicates which concentrator/distributor 43's (Mi:,
,C indicates 'C'. The storage contents of this J:Una storage device 91 are stored in the decoding circuit 93.
Enter. No. c circuit 93ν” memory device 91 i1
-), outputs No. 45 corresponding to the next word of the word represented by this signal. This decoding circuit 93 has information about the order of words within the distribution transmission line 491 from the transmitter 59 of the solid cylinder 4I. In this embodiment, the frame h1 shown in FIG. 9(a) is composed of WOa, WOb, WOc.
, WOd is the l1j2 order. (Here, the subscript also represents the line concentrator/distributor M43 to which the signal is directed.) However, in the synchronization lump detection circuit 65, the line concentrator transmission line 47
However, it must be noted that the signals input to the i74.7 medium are processed. For example, the synchronization signal detection circuit 65 detects the synchronization signal portion SIb.
If detected, the word B representing the number B is temporarily stored in the storage device 9. This information B is then decoded by the decoding circuit 93 ((, c). Then, a 4-bit signal corresponding to the next C after B is output as an output. In this embodiment, only the output 105C of the decoding circuit 93 is output. becomes "1", and the pond becomes "0".The output 105a is the output i o of A.
5b (of f-jB, output 105 cl';l',
The output lθ5d of C corresponds to the line concentrator/distributor 43 of D. The reason for outputting a signal corresponding to the next number instead of the number detected by the synchronization signal detection circuit 65 is based on the control method in this embodiment.If two signals collide or When an overflow occurs (in that case, all you need to do is to suppress at least one of the two signals and move/distribute it on the time axis. In this implementation sequence, at this time, the system is constantly trying to control the signal behind it. This will be described later.On the other hand, the collision detection signal 87 and the output 105a of the decoding circuit 93
Since both of the input signals 105d and 105d are input to the AND circuits 95a to 95d, the AND circuits 9, 5a to 95d corresponding to the word after the collision of the word force 1 in which the collision occurred
The output of d becomes "1". This and 11・i road 9.5
The outputs of a to 95d are the 1st to 11th outputs of "Otsu 4"! (Click the contents of Nunta 97, 99, 101, 103)
・I've uploaded it. In addition, the output of the recirculating circuit 93 such as Space Sue~Bai No. 3 89 (1 r) 5 a to 106d are both inputs to the AND concave paths 96a to 96d, and when the space between words becomes redundant. , the outputs of the AND circuits 95a to 96d corresponding to the subsequent word become 1-1. The outputs of the AND circuits 96a to 96d count down the contents of the fourth reversible counters 97, 99, 101, 103 and go to "C." Here, the function of the memory content rewriting circuit 92 will be explained. It is easy to understand when considering collisions that when a collision occurs, the synchronization signal component SIi located at the beginning of the next word overlaps with the data signal component of the previous word, and the synchronization signal component SIi becomes It is not detected. Therefore, the collision detection signal 87 changes from "1-" to "
The contents of 'L' are changed to 'O', and the replacement [i,! l circuit 2 or thrift 1 □ - [; two. And memory device jhf 91
Change the contents of 12. Furthermore, the word number stored in the storage device 9) is rewritten to the next word number. The order of words is the i-flavor of the words in the frame. In addition, as described later, first to fourth reversible counters 97,
The memory contents of 99, 101, and 103 are the delay time setting section (,
'V, and becomes a control signal to the delay time setting section 6-3. The first to fourth reversible counters 9/
,! 4 bits and 3 bits each, 9,101°103
-ru. On the other hand, the output of the receiver M unit 51 is input to the distribution circuit 107. At this time, the distribution circuit 107 separates the signal from the concentrator distribution device 43, which is the output of the receiver 51, based on the terminal detection signal supplied from the synchronization signal detection circuit 65, and performs exchange 109. Send to. The exchange 109 further decomposes the signal into terminal (for example, direct call) -IO signals connected to the east line distribution device 43, and performs a D/A conversion operation. After this operation, the signals directed to each line concentrator/distributor 43 are collected. A signal 111a goes to a line concentrator/distributor 43 called A. A signal 11 headed to the concentrator/distributor room 43 called Y (
b. It outputs a signal 111d which goes to the line concentrator and distributor 43 called C (No. m 111 c. ■). The delay time setting section 6-3 is provided corresponding to each east line distribution device 43, and sets a delay time for each signal heading to the concentrator distribution device 43.
151 constant delay circuits 113a to 1 for every 1& to 111d
13d and embossed delay circuits 115EL to 115d are provided. The fixed delay circuits 113jL to 113d provide an input signal with a fixed delay time and output the signal. It is preferable to consider the distance on the transmission line 47, 49 between the solid device 41 and each concentrator/distributor 43 for this delay time, but it is absolutely necessary to do so. It merely determines the sending order of the signals 111a to 111d. In this embodiment, four east line distribution devices 43 are connected to the transmission line 47.
．． 49 from the far end point to the near end point A, B. They are arranged in the order of C and D. 〒Center% Q741 to A concentrator/distributor ii 43-\The time required to transmit the signal (not including transmission delay) is ta. It is assumed that it takes time tb to go to B and tc to go to C. Since D is connected to the near end point by Jt, D-. The time required for transmission does not need to be taken into consideration. In this embodiment, the delay times in the fixed delay circuits 113a to 113d are zero, ta, ta+tb, t, +Jt,
+tc is set. If the line concentrators and distributors 43 are arranged at equal intervals, the delay time in the fixed delay circuits 113a to 113d is Q, tω 2 t-, '713 tω(tω
is the time it takes to transmit one word). Such fixed delay circuits 113a to 113, ? d
The outputs 119a to 119d, which have been designed to have a predetermined delay time, are connected to variable delay circuits 115g to 115, respectively.
d to fU, supplied A, ru. Variable delay circuits IJ5a to 11
5d is O to 15Δ (Δ is the delay time of the variable delay circuit.
The delay time can be set for 11 prefectures (minimum unit of change). This delay time is controlled by the outputs of the first to fourth reversible counters 97, 99, 101.about.103. It should be noted that the outputs of the reversible counters 97, 99, 101, and 103 are signals that reflect the collision and space mover of the signals input to the receiver 5.The variable delay circuit 115a is shown in FIG. A plurality of shift registers 117a, 117b, 117c117d
including. An output 119g of the fixed delay circuit 113a is input to an eight-stage shift register 117a and a first AND-OR circuit 121a. First AND-OR circuit 12
The most significant bit signal Q8 of the 4-bit output of the first reversible counter 97 is input to 1a. The output of the first AND-OR circuit 121a is input to a four-stage shift register 1xybK. This shift register 1
The output of 17b is output from the second AND-OR circuit 1271) along with the second significant bit 22 of the 4-bit output of the first reversible counter 97, Q4, and the output of the 8-stage shift register 112a. input. The output of the second AND-OR 1 circuit 121b is input to a two-stage shift register 117c. The output of the two-stage shift register 117c is combined with the signal Q2 of the third bit 2' of the four-bit output of the first reversible counter 97 and the output of the four-stage shift register 117b (((third AND- The output of the third AND-OR circuit 121c is input to the one-stage shift register 117d.The output of this shift register 117d is Bit 2θ signal Q] and two-stage shift register No. 17
It is input to the fourth AND-OR circuit 121d together with the output of 'd. The output of the fourth AND-OR circuit 121d becomes the output of the variable delay circuit 1/5a. Next, the 7-and-OR circuits 121a to 122a will be explained.1.The configurations of these circuits are almost the same, and the AND circuits 12. ? , J 25 , , OR circuit 127
including. In the first AND circuit 121a''C, the AND circuit 123 is supplied with a signal 119g from the fixed delay circuit 1.1 and the output signal Q8. via the inverter 1299. stage shift register 117
The output of No. 8 and No. 4 Q8 are input. AND circuit 123
, 125 are both input to an OR circuit 127. The a1 output of the OR circuit 127 is the output C of the AND-OR circuit 121 & 0 In the other 'AND-OR circuits 121b to 121d, the input to the AND circuit 123 is the output C of the AND-OR circuit 121&.
17a, 117b, and 117c. When the variable delay circuits 115p and 115f are configured in this way, the 4-bit output of the reversible counter 97 indicates that the silkworms in the shift registers 11f to 117+i to which a signal of "1" has been input are Input signal I J 99. passes. Therefore, the total number of stages of the shift register changes depending on the contents of the reversible counter 97, and the delay time changes. . Signals from such variable delay circuits 115a to 115d are supplied to a multiplexing circuit 57. Multiplexing circuit 5711
A synchronizing signal portion So1 is attached to the supplied signal Jl, and time division multiplexing is performed. In other words, words are arranged in parallel in a predetermined order to form one frame. There are no collisions in the output from multiplexing circuit 57. Next, the line concentration distribution device 43 will be explained. As shown in FIG. 11, the concentrator/distributor 43 receives a signal sent from the main unit 4 via the distribution transmission line 49 at the receiver 131. For example, the output of the receiver A3 receiver 131)-J to which the Difconise code has been applied (converts No. 3 to the two-wheel control level receiver 13) is supplied to the distribution circuit 133 and the synchronization signal detection circuit 135. The synchronization signal detection circuit 135 generates a signal converted to a logic level, and this signal forms an entire frame consisting of a plurality of words. The above-mentioned synchronization signal portion SOi is detected from among them. When the detected synchronization signal portion Sot matches the number of the concentrator/distributor 43, this signal is sent from the intermediate fire device 41 to the concentrator/distributor 43.
It is determined that the data was sent to rt.13. Therefore,
The synchronization signal detection circuit 135 sends this detection result to the distribution port M13.
Let 3 know. In the distribution circuit 133, the receiver 1 is
The output of 31 is subjected to the following processing and output. In other words, each terminal 45
Perform processing to separate each signal. The data signal portion DO4 is further time-division multiplexed corresponding to the number of terminals 45, and these signals are transmitted to each terminal 45! by
Separate into Further, the output of the distribution circuit 133 is a digital signal, and if the terminal 45 is a telephone, a terminal interface 137 is required. The terminal interface 137 includes a DA converter that converts the digital signal from the distribution circuit 133 into an analog signal suitable for the telephone, and an AD converter that converts the analog signal from the telephone into a digital signal.
・Includes hybrid trance etc. The output digital signal obtained by digitizing the analog signal from the telephone by the converter of the intern ace 137 is time-division multiplexed by the multiplexing circuit i39. Then, the synchronization signal portion SOi described in D'+J is detected by the synchronization key word detection circuit 135 and sent at the timing d1.
It is sent to the a device 141. This takes into account the formation of a signal frame on the concentrator transmission line 47''. Furthermore, the synchronizing signal portion SOi has already been subjected to (delay) control in the solid device 41, and according to the detection timing of the synchronizing signal portion SOi, the timing at which the signal is sent from the terminal 43 is different from before. The transmitter 141 performs modulation or encoding suitable for transmission (in this embodiment, only diphase encoding) and sends the signal onto the concentrator transmission line 47 . This sent No. 43 was received by the solid equipment 4 mentioned above! do. Here, the multiplexing circuit 139 is synchronized (Fj signal detection circuit 13
13 force is applied without providing a delay time to the C input, which coincides with the pressure detection timing of the signal part in step 5, but it was determined from this timing 6)) - Regular time 1;)
Send a signal after j. J: You can use sea urchin. In addition, there is no contradiction regarding the following control JI;
Control the timing t- of the word from 3.
@ Missing + space over is heading in the direction of being reduced. Next, the operation of such a system as a whole, that is, the control of signals on the transmission lines 47 and 49 will be explained. First, the time-division multiplexed signal immediately after being transmitted from the transmitter 59 of the solid device 1) to the distribution transmission line 49 is a frame λ shown in FIG. 8(a). Here, the delay times in the fixed delay circuits 113a to 113d are as follows:
Hejiriki・U (for A bow, C1 each (1, Iz,
2tz, 3tz (tz is one word (time length of No. 3), and variable delay circuits 115a to I
Z 5'd delay time t7. rJ is 0, 0, 0, and 15Δ for the east line distributors of A, B, C, and D, and the 1st line heading toward is, respectively. Furthermore, the time it takes for round-trip signal transmission of 1 solid device 41 and east line distribution device 43 of A, B, C, and D is 125Δ, 10Δ, 5Δ, O(
Δ is a unit time unit determined by the required opening time. )
shall be. It is assumed that each concentrator/distributor 43 receives the synchronization signal portion SOi and then sends the signal to the solid equipment 4. The signals have waveforms as shown in FIG. 8, 1(b) to 1(e). Here, of the signal going from the concentrator/distributor 43 to the solid device 4, the synchronization signal part is SIa, and the data signal part is DIa.
It is written as follows. If these A words are expressed on the same time axis, they are as shown in Figure 10 (a). As is clear from this figure, Figures 8 (b) and (c)
Niman Saharu (;'i'Yumiru'1shi, Figure 8 (0 and (
d) and 2) b1. Yuma-c-N Tsuki Q 1 + Q
2 ka raw shiteil. Also, F4ij 8 M: (dJ and the signal shown in (e) l"1lJJ
1°S2 has occurred. The above-mentioned Srn is set to 1.5Δ (7teJ(゛〈. These IYl: The length and space over are determined by the tooth height detection circuit 1 circuit 67, In No. 11W space over 1 roasted turn j Raku 109・Detected. Collision Ql is collision detection 1f
A collision detection signal 87 is supplied to the variable delay control circuit 71VC by the ij path 67. At the same time, the synchronization signal detection circuit 65 calibrates the synchronization signal SIa. In this state, where is the word ``I'' that makes SIa ``I1''?
Indicates that there was a collision between the sail and the ship (signal with SIb) following the sail. As is clear from FIG. 8 (b> to (e) and section 10) (a), the synchronization signal portion Sfb is not detected by the T collision Q1. Although the collision Q2 is detected, the SI
A1.b and Sle are detected to be the same collision of signals. First, the circuit shown in FIG. 7 (variable delay control circuit 71)
It was. During. Well, there's no one. I;] shi, Sla'ji;ya pointed °C
It is said that there are two collisions from force ゛7, collision Q2 is Slb
The signal section that handles the
It is also possible to interpret 4jjrito's 1111 so・Xunsha-ji'-〇,;ra:)1. Seven; U1C1j7: Hl,
',' configuration) - locoto:= LJ frp ”: a'
> Ro. In other words, iδ7;, 1-1', 1-1', 92 is the collision 91 operation record]
By changing the contents of 1 from 7 to the next 13 and changing 3, the above becomes "F' r4. As is clear from the explanation of the decoding circuit 93 of No. 71L,
The rjJ variable delay system (al:) noise in the j1 circuit 71 is as follows: (1) ti-jj is not changed when the signal at the beginning of the frame is generated. (2) In response to the collision detection signal 87, a signal is generated that goes to the concentrator/distributor details 43 that generated No. 1112, which is the one after the IC of 1↑1j among the two word signals of the A5 of the j collision. Delay time 111J by J (1 clock time). (3) In response to the space over detection signal,
Among the two signals whose spacing is equal to or greater than a certain value (15Δ), the generation time of the signal directed to the line concentrator and distribution device 43 that generated the latter signal is advanced by Δ. This is reflected in the circuit configuration of variable delay control circuit 7 shown in FIG. How the signal shown in Figure 10(a) is controlled J'
Let me explain what L'C is. First, due to a collision Q1 as shown in FIG. 10(a), the collision detection signal 87 becomes "1".
”. Further, the contents of the storage device 91 are synchronized with the synchronization signal Sla.
By A,l! 1: Therefore, the output 105b of the decoding circuit 93 shown in FIG. 7 becomes 11''. Therefore, the contents of the second reversible counter 9'9 are counted up, and the delay time in the variable delay circuit 115b is set to 0. Therefore, as shown in FIG. The signal that makes the signal part I1 is delayed by Δ. If the content of the storage device is B due to the collision Q1 as described above, the signal that has the error synchronization signal part SOc in the collision Q2 will also be delayed by Δ.
synchronization (i tongue part s
The signal with ob is sent out continuously. Also, the content of the storage device becomes C due to the collision Q2. Space S1
As a result, the number 89 of the Nube-Nuover production becomes ``1 cry.'' Then, the contents of the fourth reversible Kazunta 103 are counted down and become ``From 5-j to 71.4-''. The delay time in the variable delay circuit 115d is 14Δ. Therefore, for the signal having the C1C6 order portion Sodffi, a delay time of 14Δ is added to the fixed delay time. However, the signal used by the synchronization signal part SOc is also Δ
Since it is shifted by C, the space between SOc and Sod is 13Δ.0 Such No. 48 is the concentrator/distributor f? :i Sent to 43. Then, the signal from the line concentrator distribution device 43,
The frame structure of the signal immediately before being input to the central device 4 is as shown in FIG. 10(C). Similar processing is applied to this signal as well. Then, as shown in Figure 10(a), the frame structure of the signal going from the middle mounting board 41 to the line concentrator distribution device 43 is as shown in Figure 10(a). The space between the signal with SOa and the signal with sob is such that:3. When j, the ]0th
As shown in FIG. 7(e), the collision Q7 at the concentrator transmission line 47'2 is resolved by 1. Thereafter, the same operation is repeated, and the frame structure of the signal from the solid device 41 to the line concentrator and distribution device 43 as shown in FIG.
, SOb + S Ocr S Od When the spacing between the signals becomes 3J, 6Δ, 5Δ, the 10th
As shown in Figure (g), collisions Ql, Q2 and space over S1 are canceled. The above processing is based on the processing algorithm of the variable delay control circuit 7J''C in relation to the relationship between the two signals.
)\rL], it is also possible to change the generation time of the previous signal. The algorithm at this time is: (1) The generation time of the last signal making up the frame is not changed. (2) Of the two colliding signals, the signal to the concentrator/distributor that generated the previous signal (the generation time of No. 3 is advanced by Δ). (3) If the space between the two signals is greater than a certain value, When the second signal is generated, the second signal to the east line distribution device that generated the previous first signal is delayed by Δ.If following such an algorithm, for example, as shown in Fig. 8 (
If the frame structure is as shown in a), A, 13. Basically, the transmission timing of the signal going to the line concentration distribution device 43 of C (C has to be early. In particular, the timing of sending the signal going to the line concentration distribution device 43 of A needs to be very flexible. Considering the ability of the delay time setting section 6-3,
This is nothing but reducing IHJ money during delay in the variable delay circuit 115a. Therefore, in the variable delay circuit 115a, it is necessary to increase the initial variable delay amount so that the delay time does not become negative (which is actually impossible). Above, fixed delay time 11'8113. ,No4”:, ,i
1.1 d/j4 and variable, 115 each around Jl and JlE
a to 115 d '5: B; Although the circuit was described as 1, it can also be integrated 2) 0, This example? '(, j Liquid delay circuits 115a to 115
d (G, 9th) The shift register was used in the process shown in 1, but a random access memory (hereinafter R, A) was used.
, Mdo1raku, l-)j, ζ may be used. At this time, it is necessary to control reading from the RAM. Also, if the signal transmission timing in the exchange control section 109 can be opened, a delay circuit is necessary/3 (obviously C is necessary.) From the solid device 41 to the (mysterious) spring distribution device 43. Even the sending timing of the A word can be controlled, and it can be easily controlled.Next, when the 7 frame structure of the signal going from the solid device 41 to the line concentrator distribution device 43 is different, the L control is controlled. The explanation is as follows.Here, a frame is constructed in the p order (words) going to the concentrator distribution device 1 indigo 43 of B, D, A, and C.The connection of the east line distribution device 43 is the same as in the previous example. The variable delay circuit 115P and the fixed delay circuit 113a and N are the same as the set 4ij! device \R'L<'j+-shishitan). Variable, Zien U-ro 115 f+
, Usada 6 work] The circuit 113b is the 2mth (fortunate bow, month +3; l'5; R of the signal heading to the ka-Ylko device 43; 'I (does m).' Shimo comrade C゛al0
Frame K: fch output 1'
i 3 d slow it jT-,, <', j -2tω,
There is 0.3tω j c τ.・F fire device 41 and A,
) U, C, D Ei 7 gland distribution device 43 1) 11 transmission line 4
7.49 U'z (The time required for the L"l- to arrive in Osaka is 125Δ, 10Δ, 5Δ, 0, as in ml. Under such article r[゛, the 12i If the number M that constitutes the frame is connected to a71, then the number sent from the IIR41 is 1, then dr 1
2 [zl The codes shown in (b) to (e) are +3
, D , A , C concentrator/distributor f; El 4
3, send out 1, and 1. 'Fl 9 <Input at device 4.
Ru. This signal is signal overlap (collision) Q 1
, Q, 2 occurs, and +v; +j' f the surplus base of the river.
82 is occurring. Control of transmission timing for such signals1ll1
In addition to the element of controlling the signal after the collision or space (2'), the following circumstances are added to the algorithm. (4) Of the two signals in which a collision has occurred, the timing of the signal sent to the line concentrator/distributor 43 that generated the latter signal is delayed by Δ, thereby changing the timing of the signal sent to the line concentrator/distributor 43. If a signal collision occurs within a frame, the sending timing of subsequent signals (signals sent to the line concentrator and distributor 43) is also delayed by Δ. (5) Of the two signals whose inter-signal spacing is greater than a certain value in the frame input from the line concentrator 43 to the solid device 41, the signal heading to the line concentrator 43 that generated the latter signal. By advancing the sending timing by Δ,
If overlap (collision) with the previous signal occurs, it is prohibited to advance the signal sending timing by Δ. The reason why such a situation is so impressive is that, for example, if the algorithm simply baits the latter of the two signals mentioned above, the signal directed to the concentrator distribution device 43 named D from the collision Q7 Similarly, the space S causes the generation of the signal directed to the concentrator/distributor 43 A to be accelerated by Δ, and the signal heading toward the collision Q2L C is controlled by Δ. Then, in the frame of the signal sent to the distribution transmission line 4, the signal going to the concentrator distribution device 43 called D is Δ as shown in FIG. 13(a).
[A] signal heading to the line concentrator/distributor 43 is delayed by Δ
Here, it can be seen that an overlap of the number M occurs.In order to remove this, the variable delay control circuit 7 is used.
It is necessary to add items 4 and 5 above to the algorithm. In other words, the variable delay amount is controlled so that the signals transmitted from the middle mounting M41 do not overlap.
This is work. In other words, the variable delay amount of the signal before the frame cannot exceed the variable delay amount of the signal after the frame. The above algorithm detects VTj'44Q1 in Fig. 12(f).
, A, C and Iwit': ! , '+: Distribute 1 by Δ to the generation of Shinsou heading to the distribution device 43, space S
1, for detection 1・J, without creating an example, μ3) for Moeki Q2, LSC which goes to line concentrator distribution device 43 1)
If the generation of the signal is delayed by Δ, the result will be as shown in (+4) in FIG. is the 12th
:;Jh). If the above-mentioned complicated operations are continued, the transmission signals from solid device 4 will be 24', '12
[Input 1 (i), the reception 5 signal to the medium fire device 41 is the 12th
1"R+1), and there is no collision and there is no excess or shortage of space. It can be seen that the signals are arranged. , and even if the digits of the east line distribution device 43 are changed, there is no need to make any changes to the device 47.y.Hereinafter, variable delay control that realizes the algorithm of J. The circuit can be easily realized by modifying the circuits A and ND in Fig. 7. By using the algorithm shown above, [by detecting the collision of two signals: Controls the generation of the signal sent to the concentrator/distributor 43 that generated the previous signal among the two signals.In this case, it is easy to know what to do when the signals from the medium-heat device 4) overlap. (It is possible to guess it. In other words, nothing is done for space over detection, and in response to a collision, the signal that is earlier than the previous one among the two signals is also emitted by Δ at the same time.) The sooner the problem is solved, the sooner it will be resolved. Now, as you can see from the above explanation, the middle implementation 1 shoe 41
When the complaints of the signals going from the signal line to the line concentrator/distributor 43 are configured without spaces between each signal, only one collision detection result is used to eliminate collisions and space overs. Also, the space S2 between the last signal of a frame and the first signal of the next frame, as shown in the 13th ffl(f), is naturally improved in the process of improving collisions. In other words, use space over7.
By producing only the collision, the inventors of the present invention have developed the following motion algorithm. Figure 3 shows that among the two signals that were struck, one signal was emitted by the concentrator/distributor (V' - hurried the bow, frame;) of the concentrator and distributor. After it, the generation of the signal f that exists is delayed by Δ.In other words, in FIG. IJ3 is made to rise by Δ, and J knee is placed outside the concentrator in the collision Q and ', and the generation of the signal sent to C is further delayed by Δ. The same as T-T: is obtained and compared. However, if the collision detection circuit 67 and the space over detection circuit 69 between No. 5 and A5 can also detect the length of the C collision or the length of the space, the control amount can be adjusted accordingly.
It is preferable to change it. For example, if the length of collision and space is 2 or more, the amount of change is j
y2Δ, and less than 2 may be Δ and 1-. Also, if the length can be accurately determined as 5 (1j), it is possible to change it at once; it is also possible to separate the length. Move the bow from the beginning of the frame to WO,, WO2, WOn
Name it. Let DVi be the variable delay amount for zone WOi. Initial variable delay amount DVi0haDV+
. -=0, DV i -1-,', 2DV i
o. Now, at this time, the main signal is returned from the line concentrator 43 to the middle package 1 summer 41 and the main signal is set as W I l . Also, -1zVIi and W
The relationship between Ii□, is expressed as Si, i+, . The modulus of Si, i+' represents a collision of length ISi, i and S], 1 if Si, i++ is a negative number.
If +1 is a positive number, it represents a space of length Si, i++. Therefore, the DVi-1-+ is in the 1t1] of the other number heading from the medium fire equipment (44) to the east line distribution device 43. There is a time difference in the length of DVio. However, due to the round trip on the transmission line t7゜49, the relationship between the two signals is Si, i%I
This means that it has become. Si, i++" is the value of the initial state (state where no control is applied). In other words, it is the relationship of the number A when input to the solid device 41 for the first time. Here, when the control is applied J' The relationship at the time of input to the solid device 4 of No. 4R and No.・・・
- Condition (1) is imposed. S and Ho are threshold values for detecting a space over between signals, and were 15Δ in the above embodiment. S' r l +1 is) (D"; ++ -DVi) - (DV!,, o -D
Vi')+Si, H+l. Therefore, equation (1) is expressed as 0 ≦ (1) v; + I-DV'+ ) (Dvi
+1'DVi' ) -1-s l , 1. H,
, +O<S, TI. ...(2) becomes. However, if there is no value that satisfies the above condition under the condition of DVi +l > DVi, DVI+1''=DVi
Choose. Under these conditions, if we sequentially calculate from 1-1, we get the process u1゜For example, as shown in FIG.
The three signals wo, , wo, , wo, , wo, have no delay amount at all. In other words, DVb0=DVd'-DVa' = DVc0= O
12(f) or (b)
) to (e), Sbd' knee 10Δ Sda' = -1-12,5Δ Sac' = -7,5Δ. Furthermore, in the frame configuration shown in FIG. 12(g), if the signal directed to the line concentrator/distributor 43 B is fixed, DVb=0. Therefore, the relationship between b and d is 0<, (DV
d-DVb)-(DVdo-1)Vbo)-3l]d”
＜1.5Δ0＜DVd−10Δ〈15Δ ° 10 Δ≦DVd 〈I L5ΔDVd −C
Although 10Δ or 11Δ is suitable for control, it is set to 10Δ here. Next, we will examine the relationship between a and d. That is, 0 ward (D~z-DVd) - (DVao-D~d')
-t-3da'<, 1.5Δ, °, 0≦DVa
-DVd-1-] 2.5Δ<1.5Δ There is nothing that fully satisfies this condition and also satisfies the conditions DVd 'Z, DVa. Therefore, as mentioned above, DVa2DVd
210Δ. Similarly, we will examine the relationship between a and C. That is, 0ri(D~e -DVa) -(DV d'-DVa
o) → -6a co (1,5∆ is not dropped, just look for DVc. By transforming this formula, 175∆<DVc (1g
, lI 'C, DVc = 18Δ, and the same rice yield as shown in Fig. 12 is obtained. Although several embodiments have been described above, it is natural that the present invention is not limited to these embodiments in any way. For example, the transmission method on the transmission path is not limited at all, and there is no need to worry about using a pair of transmission paths. This can be achieved by dividing one transmission line into bands. Although omitted in the explanation of the exchange, it is natural that the exchange always retains subscriber data. That is, the connection state of the line concentrator and distribution device to the transmission line of the terminal equipment is provided as information, and this information is updated every time the connection state changes. Dear God, every time this subscriber data is updated, this invention is implemented and the signal is constantly and efficiently transmitted. In addition, the present invention aims to develop a half-01 network system based on a solid equipment having the capability of an exchange.

[Brief explanation of the drawing]

2B11shi I 3. The middle implementation 4 (, a set of 1.'j↓ consisting of a modified line concentrator/distributor', and a pair of transmission lines, θ\)
1-21 shows the system of 7-day submergence system, and the second country is Ni FS.
] Th); Figures 9 to 9 are shown in Figure 3, but are only for explaining the 1st position of the inner mounting, Figure 4 is a diagram showing the 41'' configuration, Figure 517I and Figure 8 are the deviations at various parts of the TOYOTO. @) 41 'j-[Sen, a)6
The figure shows the collision detection circuit, the space over detection circuit between the signals (Figure 71) shows the configuration of the control circuit, 9th figure 1j, τ) variable. Figures 1 and 2 are diagrams showing the configuration of the delay circuit, Figures 10 and 1 are diagrams for explaining the control operation in this device, and Figure 1j is a diagram showing the configuration of the line concentrator and distribution device. 4J...Solid equipment, 43. Concentration and distribution (placement, 45..Terminal equipment, 47..Concentration transmission line, 49.Distribution transmission line, 6-
3... Delay time setting section, 67 Collision detection circuit - 59/ Year J'7 Fig. 2 Fig. 3L4 Fig. 4 1ν1 No.; Figure 11

Claims (7)

[Claims] (1) Signals from multiple line concentration distribution terminals are 81'! A line concentration and distribution system in which the signals generated from the medium-fired device are sent on one transmission line in a time-division manner and sent to the solid equipment, and the signals generated from this medium-fired unit are placed on a second transmission line in a time-division manner and are sent to the plurality of line concentration and distribution terminals. The line concentration distribution terminal includes means for receiving a signal from the solid equipment, and a first
means for transmitting a signal to a transmission path, and the solid device includes a detection means for detecting a collision between words (from the line concentration/distribution terminal on the second transmission path, and a detection means for detecting a collision between words); and control means for correcting the transmission time of the signal to the line concentration and distribution terminal in accordance with a collision detected by the line concentration and distribution system. (2) The line concentration and distribution system according to claim 1, wherein the control means includes means for delaying the sending time of the signal to the line concentration and distribution terminal. (3) A patent claim characterized in that the control means advances the transmission timing of the signal sent to the terminal corresponding to the temporally earlier signal of the two signals involved in the collision detected by the detection means. The line concentration and distribution method described in item 1. (4) A patent claim characterized in that the control means delays the sending timing of the signal sent to the terminal corresponding to the temporally later signal of the two signals involved in the collision detected by the detection means. The line concentration and distribution method described in item 1. (5) The line concentration distribution system according to claim 1, wherein the detection means includes a measuring means for measuring the length of the collision. (6) The concentrating and distributing system according to claim 5, wherein the control means corrects the transmission time 1111 based on the length of the collision caused by the open side means. (7) When signals from multiple concentrating and distributing terminals are time-divisionally loaded on the first transmission line and sent to the solid equipment, the signals generated from this intermediate equipment are also sent to the second transmission line. It is a concentration distribution method in which the concentration line segment t1〉7:j,+ is sent to the end of the pre-filling line in a time-division manner.In 1), the concentration line distribution of n1] is <'; r, the end of i is,
a): means for receiving the bow;
The means for transmitting a signal to the first transmission line according to the received data by this means 7, A detection means for detecting the space between the signals from the terminals of the concentrated line segment lTi12 on the transmission path, and when the space detected by the detection means is greater than a predetermined value, S/< -N A'-bar. and means for correcting IL1 when transmitting a signal to the front E-collection distribution terminal in accordance with the result of determining that space is over by this means. 2-pin power distribution type.