JPS5830781B2 - How to get the word out - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention provides a time division transmission device in which a plurality of information groups (
The number of a frame consisting of a plurality of consecutive words (hereinafter referred to as words) is attached to the word number of the first word of that frame, and a determination bit is added to each word to distinguish whether it is the first word or not. This invention relates to a word number sharing method that makes it possible to efficiently identify multiple frames.

In general, a control device consisting of a transmitter that encodes information and a receiver that converts the code into information is connected to a transmission line for transmitting the code (hereinafter referred to as a control line) and a reception line for receiving the code (hereinafter referred to as a control line). The control line and the display line are connected in parallel to the terminals of the control line and the display line, as well as lines that branch out at multiple points along the way. In a one-to-many type time division transmission device in which one system is configured by connecting a plurality of controlled devices in parallel, each word number is Generally, a series of numbers that do not overlap between controlled devices are assigned, or a controlled device number and a word number are assigned to each word for each controlled device.

However, if each word is assigned a series of numbers that do not overlap, the total number of words for the transmission device is determined by the number of bits used to indicate the word number. In many cases, if the total number of words is increased, the number of information bits in one word decreases. Since the number of information bits decreases by the number of bits required for transmission, there is a drawback that the transmission efficiency decreases.

The present invention has been made to improve the above-mentioned drawbacks.
In a one-to-multiple time division transmission device, each word sent from each controlled device to the control device via the display line includes either the first word transmitted within one frame or the second or subsequent word transmitted. In addition to providing a determination bit other than the bit representing the word number to distinguish whether the word is a
The word number of the first word is the number of the corresponding controlled device, and the word numbers of the second and subsequent words are as follows:
Using arbitrary numbers that do not overlap within the frame, frame these contents and send them to the control device sequentially for each controlled device.The control device receives the frames sequentially and selects the discrimination bit of the first word. By identifying the number of the controlled device using the word number and identifying the second and subsequent words with each word number, it is possible to distinguish between multiple controlled devices, and the number of bits for identifying the word can be determined. This is intended to reduce transmission costs and improve transmission efficiency by increasing the total number of words without increasing the number of words.

Examples of the present invention will be described below.

FIG. 1 shows a block diagram of an apparatus to which the method of the present invention is applied.

In the figure, a control line 30 and a display line 40 are connected to the transmitting section and receiving section of one set of control devices 10, respectively, and n sets of controlled devices 1 and 2 are connected to terminals and at multiple locations on both lines 30 and 40. ．． ..., n are provided.

That is, n in the middle of the control line 30 and the display line 40
-1 branch, each with n-1 sets of controlled devices 1,
2. . . . is connected to the receiving section and transmitting section of n-1.

Also, the terminals of this control line 30 and display line 40 have n
The receiving section and transmitting section of the n-th controlled device are connected.

With the above configuration, one set of control device 10 and n sets of controlled devices 1, 2 . ..., n is the control line 30 and the display line 40
By connecting them in parallel, a 1:n time division transmission device is constructed.

The display line 40 in this time division transmission device is connected to each controlled device 1, 2 . .

Therefore, each controlled device 1, 2 . ..., each controlled device 1, so that the frames transmitted from n do not overlap.
2゜..., n receives a controlled device designation code for instructing the transmission timing of the frame transmitted from the control device 10 through the control line 30, and only the corresponding controlled device receives the frame. Send.

When the control device 10 finishes receiving the same frame, the control device 10 sequentially sends the controlled devices 1, 2, . . . , n, each frame is always transmitted cyclically by instructing the transmission timing.

FIG. 2 is a diagram showing the structure of words in each frame shown as a specific embodiment of the present invention regarding the structure of the frame, and in this example, one frame is made up of 4 words,
FLl, FL2...FLn are the frames of controlled devices 1, 2...n, respectively, F'it.''12
・”13・”14・”21・F22・”23・”24・
...F, F F F are discrimination bits, old n21 n31 n4 G1□, G1□, G13. G14. G21. G22. G
23°G24...Gnl, Gn2. Go3. G
n4 is the word number, K1□, 1□, 13. 14.
2□, K22 + K23 tK24...
Knl, Ko2. Kn3. Kn4 represents information.

Each word in each frame is sequentially read from the controlled device 1 (F
1□, G1□, 1□), (F1□, G12. to 12)
.

(13 to F13.G13.), (1 to F14.G14.
4)・・・(Fnl, Gnl, Knl), (Fn
2. Gn2. Kn2).

(Fn3.Gn3.Kn3), (Fn4.Gn4.Kn
4) each constitutes one word.

Each frame with the configuration shown in Figure 2 is sent from each controlled device.
The discrimination bits F11 . F2□......"If nl is set to logic "1", the discrimination bits of the second and subsequent words are "121"131"141 F2□+p23°F24...Fn2. Fr13. Fr14 goes to logic n O''.

In the case of frame FL1 of controlled device 1, determination bit F
11 is logic If, F9, word number G1□ is controlled device number 1, information 1□ is information on the first word of controlled device 1, discrimination bit F1□l F13 j F14 is logic n Ot+, word number G12, respectively ．． G13. G1
4 is the word number 1, 2, 3 of the controlled device 1, and 12.4 is the information. 13. and 14 are respective word numbers G1□, G13 . The information represented by G14 is appropriated.

Further, in the case of frame FL2 of the controlled device 2, the first word number G21 only changes to the controlled device number 2, and the second and subsequent word numbers G22. G23. G24
Even if 1, 2.3 are used repeatedly, the information will be 2□
, 2□, 23. 24 can indicate that of the controlled device 2, and in the case of the frame FLn of the controlled device n, it can also indicate the word number and information in the same manner as above.

Note that the word number G12. G13. G14. G22
゜G23. G24...Gn2. Gn3. Gn4
may be out of order with other frames.

Furthermore, when the method of the present invention is applied and a total of 5 bits are used for word identification, including 4 bits to represent the word number and 1 bit for the determination bit, even if controlled device number 0 and word number 0 are excluded, , the number of controlled devices that can be set is 2'-1
= 15 ((fixed), number of words in each frame 2'-1+1
= 16 (words), so the total number of words is 15X1
6 = 240 (words), and if serial numbers are assigned like in a general time division transmission device, even if 5 bits are used as above, the total number of words is 25 - 1 = 31 (words).
It can only be set.

As described above, when the method of the present invention is used, compared to the conventional method, the total number of words can be increased without increasing the number of bits of the word number, so it is possible to reduce transmission costs, and Information transmission efficiency can be improved.

[Brief explanation of the drawing]

FIG. 1 shows a block diagram of an apparatus for implementing the method of the present invention, and FIG. 2 is a block diagram of words in each frame shown as a specific embodiment of the present invention. 10...control device, 1,2...n...
- Controlled device, 30... Control line, 40...
...Display line, FLl. FL2. ...FLn...Controlled device, 1, 2
・・・・・・Frame of n, F1□, F1□j ”13
1 ”141 F2□z F22 +F F,...
・F , F F , F ・・・・・
・23 pieces 24 old n2 pieces n3 n4 determination bit, G11. G12. G13. G14. G2□. GG, G,...G, GG 22ν 2324 Old n21 n3jGn
4...Word number, K1□, K12. K,
3. 2□ to K14, 22 to K14. 23. 24. ...
...Knl, Kn2゜KK ...Information. n3 tsu n4

Claims (1)

[Claims] 1. A control device consisting of a transmitter that encodes information and a receiver that converts the code into information is connected in parallel to the control line for transmitting the code and the display line for receiving the code, and Terminals of the Aoishi line and lines that branch off at multiple points along the way consist of a receiving unit for converting codes from the control line into information, and a transmitting unit for encoding a large amount of information and transmitting it to the display line. In a one-to-multiple time division transmission device in which a system is configured by connecting a plurality of controlled devices in parallel, each controlled device transmits the code of one frame composed of a plurality of words.
When transmitting to the control device through the display line, each controlled device has the following information in each word in addition to its word number:
A determination bit is provided to distinguish whether the transmission order in one frame is the first word or the second and subsequent words, and the word number of the first word is assigned the number of the corresponding controlled device. However, if the word numbers for the second and subsequent words are arbitrary numbers that do not overlap within the frame, and the information to be transmitted is added to each to form a frame and sent to the control device sequentially for each controlled device, the control The device sequentially receives the frames, identifies the number of the controlled device using the discrimination bit and word number of the first word, and identifies the second and subsequent words with their respective word numbers. A method for sharing word numbers in a time division transmission device, which is characterized by being able to identify controlled devices.