JPS60248047A - Ring type information transmitter - Google Patents

Abstract

PURPOSE:To obtain an inexpensive ring type information transmitter with high isochromism by phase-locking a low speed transmission frame to a high speed transmission frame and adopting the high transmission speed as a natural number of multiple of the low speed. CONSTITUTION:A high speed transmission frame signal subject to multiplex in the unit of slots on a high speed signal transmission line 2 is inputted to a high speed signal multiple unit 20. The unit 20 applies S/P conversion to a high speed serial signal or P/S conversion to a parallel signal and transmits the converted result to a high speed bus 4 and stores it to an information exchange memory 40. The information in the memory 40 is subject to phase synchronization with the bus 4 and outputted to a low speed bus 5 whose speed is a half of the multiplex speed. A synchronizing unit 60 matches the phase locking between a high speed frame timing representing a high speed transmission frame and a low speed frame timing, moves the information on the bus 5 to the low speed transmission frame and inputs the result to a low speed signal multiplex unit 30. The unit 30 applies P/S or S/P conversion to the signal and transmits the result to a transfer signal transmission line 3. Similarly, the low speed transmission frame is transferred to the high speed transmission frame in the opposite route.

Description

DETAILED DESCRIPTION OF THE INVENTION [Technical Field of the Invention] The present invention relates to a ring-type information transmission device that mutually exchanges information between two transmission frames having different transmission speeds.

[Prior art]

As a conventional ring type information transmission device of this type, there has been one shown in FIG. In the figure, 1 is a housing that accommodates the following transmission units, etc., 21 is a transmission line for high-speed signal transmission, 6 is a transmission line for low-speed signal transmission, 4 is a high-speed bus, and 5 is a case for sending and receiving signals with terminals. Beta on the low speed bus to get there. Also 2
0 is a high-speed signal multiplexing unit that converts a serial high-speed signal into parallel and a parallel high-speed signal into serial, and among these, the high-speed bus 4 handles the signal converted into parallel. Furthermore, 60 is a low-speed signal multiplexing unit that converts a serial low-speed signal into parallel and a parallel signal into serial;
and a memory for exchanging information between the low-speed bus 5 and the low-speed bus 5, 50 a memory for speed matching between the low-speed bus 5 signal and the low-speed signal multiplexing unit 60, and 1 and 60 a synchronizer for generating low-speed transmission frames. It is a unit.

Next, the operation will be explained. Information is transmitted on the transmission line 2 for high-speed signal transmission by being multiplexed in slot units into the high-speed transmission frame shown in FIG. Information on the first slot 1a is stored in 28 on the high-speed bus 4, and information on slot 2a is stored in 6a of the memory 40. The information 6a is outputted to 4a on the low-speed bus 5 whose multiple speed is a natural number multiple that is phase-synchronized with the high-speed bus, and the information 4a is stored in 5a on the speed matching memory 50. This information 5a is generated in a locked manner, completely independent of the clock that generates the high-speed transmission frame, and is multiplexed into the first slot 6a on the low-speed transmission frame, which is not phase-synchronized at the beginning of the frame.

In this way, the information in the first slot 1a on the high-speed transmission frame is transferred to the first slot 6a on the low-speed transmission frame.

Similarly, information on 1b and Ic is also transferred to 6b and 6c.

Information on the low-speed transmission frame can also be transferred to the high-speed transmission frame in the same way by following the above-mentioned reverse route.

Since the conventional ring-type information transmission device is configured as described above, the transmission speeds of the two transmission frames are independent of each other, and the information on the high-speed transmission frame and the information on the low-speed transmission frame are exchanged. However, it had the disadvantage of requiring memory for speed matching.

[Summary of the invention]

This invention was made in order to eliminate the drawbacks of the conventional ones as described above, and it increases the transmission speed of high-speed transmission frames by a natural number multiple of the transmission speed of low-speed transmission frames, and synchronizes the phases at the beginning of each frame. The purpose of this invention is to provide a ring-type information transmission device that does not require a memory for speed matching.

[Embodiments of the invention]

An embodiment of the present invention will be described below with reference to FIG. In FIG. 8, 1 is a casing that houses the above unit, etc.;
2 is a transmission line for high-speed signal transmission, 6 is a transmission line for low-speed signal transmission, 4 is a high-speed bus, and 5 is a low-speed bus for exchanging signals with the terminal. Further, 20 is a high-speed signal multiplexing unit that converts serial high-speed signals into parallel signals and converts parallel signals into serial signals, of which the high-speed bus 4 handles the signals converted into parallel signals. Also, 60
is a low-speed signal multiplexing unit that converts a serial low-speed signal into parallel and converts a parallel signal into serial; 40 is a memory for exchanging information between the related bus 4 and the low-speed bus 5;

The synchronization unit 60 generates a low-speed transmission frame having a transmission speed equal to "/n" (n is a natural number) of the transmission speed of the high-speed transmission frame using a clock obtained by dividing the clock frequency extracted from the high-speed transmission frame by 2 by the high-speed signal multiplexing unit 20. do.

Next, the operation will be explained in the case where the transmission speed of the high-speed transmission frame is 1/2 of the transmission speed of the low-speed transmission frame.

Information is transmitted on the transmission line 2 for high-speed signal transmission by being multiplexed in slot units into the high-speed transmission frame shown in FIG. 2a on the high-speed bus 4 [, this information on 2a is transferred to 6a on the memory 40.
is stored in

The information on 6a is phase synchronized with high speed bus 4 and the multiplex speed is 1.
4a on the low-speed bus 5 of 74. By matching the phase synchronization between the high-speed frame timing indicating the beginning of the high-speed transmission frame and the low-speed frame timing, the information 4a on the low-speed bus 5 is transferred to the first slot of the low-speed transmission 7 frames) 6a
will be moved to Similarly, the information of 1b and 1c is also 6b and 6c.
Transferred to IIC.

Information on low-speed transmission frames can also be transferred to high-speed transmission frames in the same way by following the above-mentioned reverse route.

In the above embodiment, information is exchanged between two ring-type transmission lines having different transmission speeds, but a similar method can be used for a bus or the like in which information is output cyclically.

〔Effect of the invention〕

As described above, according to the present invention, a low-speed transmission frame is phase-synchronized with a high-speed transmission frame, and the high-speed transmission speed is made a natural number multiple of the low-speed transmission speed, thereby eliminating the need for a memory for speed matching, and making it possible to reduce the cost and the cost. This has the effect of providing an excellent ring type information transmission device with high timeliness.

[Brief explanation of the drawing]

FIG. 1 is a block diagram showing the configuration of a conventional ring-type information transmission device, FIG. 2 is an operation diagram showing the signal flow of each part in FIG. 1, and FIG. 8 is a ring-type information transmission device according to an embodiment of the present invention. FIG. 4 is a block diagram showing the transmission device, and FIG. 4 is an operation diagram showing the flow of signals in each part of FIG. 1... Housing, 2... Transmission path for high-speed signal transmission, 6...
・Transmission line for low-speed equal signal transmission, 4...high-speed bus, 5...
・Low-speed bus, 20...High-speed signal multiplex unit, 60・
...Low-speed signal multiplexing unit, 40...Memory, 50.
...Speed matching memory, 60...Synchronization unit. In the drawings, the same reference numerals indicate the same or corresponding parts. Patent applicant Mitsubishi Electric Corporation Figure 1 Figure 3 Figure 4 Procedural amendment (voluntary) 2. Name of the invention Ring type information transmission device 3. Relationship with the person making the amendment Patent applicant address Chiyoda, Tokyo Ward Marunouchi 2-2-3 Name
(601) Mitsubishi Electric Corporation Representative Hitoshi Katayama Department 5, Subject of Amendment 6, Contents of Amendment The scope of the claims is amended as shown in the attached sheet. 7. List of attached documents A document stating the scope of claims after amendment One or more copies of the scope of claims after amendment A serial-parallel or serial-parallel or a plurality of signal multiplexing units that perform parallel-to-serial conversion, and exchanging information on high-speed transmission frames and information on low-speed transmission frames among the plurality of transmission frames, and matching speeds between the plurality of signal multiplexing units. A ring-type information transmission device that seals a plurality of memories, characterized in that the transmission speed of the high-speed transmission frame is a natural number multiplier of the transmission speed of the low-speed transmission frame, and the phases are synchronized at the beginnings of each frame. A ring-type information transmission device.

Claims (1)

[Claims] a plurality of signal multiplexing units that perform serial-to-parallel or parallel-to-serial conversion on a plurality of signal transmission transmission paths that handle a plurality of transmission frames of n transmission speeds;
A ring type information transmission device having a plurality of memories for exchanging information on a high-speed transmission frame and information on a low-speed transmission frame among the plurality of transmission frames and matching speeds between the plurality of signal multiplexing units, A ring-shaped information transmission device characterized in that the transmission speed of the high-speed transmission frame is a natural number multiplier of the transmission speed of the low-speed transmission frame, and the phases of the leading ends of each frame are synchronized.