JPH043159B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a key telephone device in which a terminal control device and a main device have a built-in microprocessor.

In a conventional key telephone device, as shown in FIG. data is exchanged with each button telephone 2. The data at this time is comb-like serial data as shown in FIG. This serial data indicates lamp information and button information using a comb-like uneven arrangement pattern. If the amount of information transmitted between the key telephone 2 and the main device 1 is large, the data length W of this serial data becomes long, and it takes time for the main device 1 and the key telephone 2 to input or output this serial data. .
There is no problem when the number of button telephones 2 is small, but when the number of button telephones 2 reaches several dozen, it takes an extremely long time for the main device 1 to complete data exchange with all the button telephones 2. In short, as a result, the data exchange cycle per button telephone 2 becomes longer, and even if the button of the button telephone 2 is pressed, the main device 1 cannot immediately recognize this information, and the processing is delayed. There were some shortcomings.

The aim of the invention is to eliminate the above-mentioned drawbacks;
In other words, by dividing all the key telephones into several units and configuring each unit to be controlled by several terminal controllers, the serial data transmission period between the button telephones and the terminal controllers can be shortened. , and each terminal control device and this main device are provided with a common memory circuit that converts serial data such as button information and lamp information to be sent to each other into parallel data and stores it, so that a large amount of information can be stored in this common memory circuit. An object of the present invention is to provide a key telephone device that enables high-speed transmission via a telephone.

The present invention achieves the above object by providing a key telephone device including a plurality of key telephones and a main device that controls each key telephone based on data from the plurality of key telephones. A common memory that stores button information and lamp information as parallel data, and a common memory that is connected to a predetermined button phone among a plurality of button phones, and converts the serial data of button information from each connected button phone into parallel data. and a plurality of terminal control devices for storing parallel data of lamp information in a common memory, reading parallel data of lamp information from the common memory, converting it into serial data, and controlling lamp display of each button telephone. Further, the main device reads button information from the plurality of terminal control devices stored in the common memory, analyzes the information, and writes the lamp information generated in the common memory.

Next, embodiments of the present invention will be described with reference to the drawings. Referring to FIG. 3, in the embodiment of the present invention, several key telephones 2 are connected to a terminal control device 6 by an audio cable 3 and a data transmission/reception cable 4. A plurality of terminal control devices 6 and the main device 1 are connected to a common memory circuit 7 via a parallel data transmission path 8. The common memory circuit 7 is an integrated circuit used in microcomputers and the like and capable of writing and reading a large amount of parallel data.

Next, the operation of the embodiment of the present invention will be explained. Each of the plurality of terminal control devices 6 has several button telephones 2.
is connected, and button information and switch information sent from the key telephone 2 are sent as serial data to the terminal control device 6 via the data transmission/reception cable 4. The terminal control device 6 converts all the data from each button telephone 2 into parallel data and stores it in the common memory circuit 7 via the parallel data transmission line 8. When the data of all the terminal control devices 6 has been stored, the main device 1 reads the button information etc. stored in the common memory circuit 7 via the parallel data transmission line 8, and after analyzing and processing the information,
The generated lamp information and the like are stored in the common memory circuit 7 via the parallel data transmission line 8. The lamp information of each button telephone 2 stored in the common memory circuit 7 is converted into serial data by each terminal control device 6, and then
The data is transmitted to each button telephone 2 via a data transmission/reception cable 4. Each button telephone 2 flashes a lamp based on the sent data.

As explained above, the present invention allows an all-button telephone to be divided and controlled by a plurality of terminal control devices, and is provided with a common memory circuit that can be read and written to by each terminal control device and the main device. This has the effect of being able to transmit a large amount of information at high speed, and also making it possible to randomly read and write information of any button telephone in the common memory circuit.

[Brief explanation of drawings]

FIG. 1 is a diagram showing a data transmission system between a key telephone and a main device in a conventional key telephone;
FIG. 2 is a diagram showing serial data between the key telephone and the main unit, and FIG. 3 is a block diagram showing an embodiment of the present invention. 1... Main device, 2... Key telephone, 3... Audio cable, 4... Data transmission/reception cable, 5
. . . serial data, 6 . . . terminal control device, 7 . . . common memory circuit, 8 . . . parallel data transmission path.

Claims (1)

[Scope of Claims] 1. A key telephone device including a plurality of button telephones and a main device that controls each button telephone based on data from the plurality of button telephones, comprising button information and lamps of the plurality of button telephones. a common memory that stores each piece of information as parallel data; and a common memory that is connected to a predetermined button phone among the plurality of button phones, converts the serial data of button information from each connected button phone into parallel data, and stores the common data. a plurality of terminal control devices that store the lamp information in a memory, read the parallel data of the lamp information from the common memory, convert it into serial data, and control the lamp display of each button telephone; the main device stores the lamp information in the common memory; reading stored button information from the plurality of terminal control devices;
A key telephone device that writes the lamp information generated by analyzing the information into the common memory.