JPS58153483A - Key telephone device - Google Patents

Abstract

PURPOSE:To shorten the transmitting period of a series data between a key telephone and a terminal controller, by dividing the key telephone sets into the group having several units, and controlling each of these divided groups by plural terminal controllers. CONSTITUTION:The information transmitted from a key telephone set 2 is sent to a terminal controller 6 in the form of a series data via a data transmission/ reception cable 4. The controller 6 converts the data of all telephones 2 into parallel data and stores them to a common memory 7. A primary device 1 reads out the button information, etc. stored in the memory 7 at a time point when all controllers 6 store the data and then stores the produced lamp information, etc. in the memory 7 after an analysis of the button information. The lamp information, etc. stored in the memory 7 is converted into the series data by each controller 6 and then fed to each telephone 2 to put on the corresponding lamp.

Description

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

In a conventional key telephone device, as shown in FIG. Data is periodically 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 will be long, and it will take time for the main device 1 and the key telephone 2 to input or output this serial data. It takes.

When the number of button telephones 2 is small, there is no time mti, but when the number of button telephones M&2 reaches several dozen, it takes a very long time for the main device 1 to complete data exchange with all the button telephones 2. In short, as a result, the cycle of data exchange between the 21 key telephones is long, and even if the buttons of key telephones 4 & 2 are pressed, the main device 1 cannot immediately recognize this information, resulting in slow processing. There were some drawbacks.

An object of the present invention is to eliminate the above-mentioned drawbacks, that is, to divide all the key telephones into several units, each of which is controlled by several terminal control devices, so that the key telephones and this terminal A common memory is used to shorten the transmission cycle of serial data with the control device, and each terminal control device and this main device convert serial data such as button information and lamp information that should be sent to each other into parallel data and store it. (b) It is an object of the present invention to provide a key telephone device that allows a large amount of information to be transmitted at high speed through this common memory circuit by providing a common memory circuit.

The features of the present invention that achieve the above object include a plurality of terminal control devices that control a plurality of button telephones connected via voice cables and data transmission/reception cables, respectively;
In a key telephone device including a central processing unit that controls these terminal control devices, each terminal control device converts and stores serial data such as button information from each button telephone to be inputted by the main device in parallel, In addition, a common memory circuit is provided in which the main device converts serial data such as lamp information to each button telephone to be inputted by each terminal control device into parallel data and stores the same, thereby transmitting a large amount of information at high speed. .

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, an audio cable 3 and a data transmission/reception cable 4 are connected to a terminal control device Ik.
Several key telephones 2 are connected to 16. 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 a large-capacity parallel data device 6 used in the microcombinator cape, each of which is connected to several button telephones 2, and stores button information and hook inch information sent from the button telephones 2. is 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 all terminal control devices 6 complete data storage and start, the main device 1 parallel data transmission path 8
After reading the button information etc. stored in the common memory circuit 7 via the parallel data transmission line 8 and analyzing the information, the generated lamp information etc. are stored in the common memory circuit 7 via the parallel data transmission path 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 transmitted to each button telephone 2 via the data transmission/reception cable 4. Each button telephone 2 flashes a lamp based on the sent data.

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

[Brief explanation of the drawing]

FIG. 1 is a diagram showing a data transmission system between a key telephone and the main device in a conventional key telephone, FIG. 2 is a diagram showing serial data between the key telephone and the main device, and FIG. 3 is a diagram showing the present invention. It is a block diagram showing an example of. 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. W 2nd diagram 3rd diagram

Claims (1)

[Claims] A key telephone device including a plurality of terminal control devices that control a plurality of key telephones connected via voice cables and data transmission/reception cables, and a central processing unit that controls these terminal control devices, wherein the main device is Each terminal control device converts serial data such as button information from each button telephone to be input into parallel data and stores it.
And a common memory circuit in which the main device converts serial data such as lamp information to each button telephone, which should be input by each terminal control device, into parallel data and stores it? ! - What you have t%
Key telephone equipment.