JPS6034148B2 - Line control device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a line control device that connects a line between a workstation and a center station.

Conventionally, in a system consisting of a plurality of workstations and one center station, connections and disconnections between each workstation and the center station have been performed as follows.

That is, an operator inputs a predetermined command instructing connection or disconnection of a line by operating keys on a character input key section on a keyboard of a workstation. For example, input keys such as LINK-ON and LINK-OFF. This command is analyzed, and based on the analysis results, lines are connected and disconnected through software processing. However, with this method of inputting predetermined commands to connect and disconnect lines from the keyboard of a workstation, it is necessary to operate multiple keys, making key operations cumbersome and prone to accidental keystrokes. There was a drawback.

This invention was made in view of the above circumstances,
To provide a line control device in which a line connection key and a line disconnection key are provided on the keyboard of a workstation, and a line with a center station can be easily connected and disconnected by operating the keys.

Hereinafter, one embodiment of the present invention will be described with reference to the drawings.

FIG. 1 is a schematic diagram of an embodiment of the present invention. In the figure, 1 indicates a keyboard. This keyboard 1 is provided with a line connection key lc and a line disconnection key ld in addition to a character input key section la and a number key section lb.
Code information corresponding to each key output by key operations on this keyboard is input to a decoder 2. This decoder 2 outputs various control signals KN, KF, . . . based on input code information. control signal KN
is a signal that becomes high level when the line connection key lc is operated. In addition, the control signal KF is the line disconnection key ld.
When is operated, the signal becomes level. The control signal KN' is supplied to the AND circuit 3, and the control signal KF is supplied to the AND circuit 4. The output signal of the flip-flop 5 is supplied to the fund circuit 3 as a gate signal. The output signal of the AND circuit 3 is the link-on control circuit 6
is supplied to. This link-on control circuit 6 sends a line connection control signal L-ON to a center station (not shown).
It also supplies logic level signals to the set terminal of the flip-flop 7, the reset terminal of the flip-flop 5, the enable terminal of the job control circuit, and the link on/off screen creation circuit 9. Furthermore, the output signal of the flip-flop 7 and the inverted output signal of the flip-flop 10 are supplied to the AND circuit 4 as gate signals.

This flip-flop 10 is set/reset controlled by a signal output from the job control circuit 8. Job control circuit 8 is link-on control circuit 6
When the logic level signal output from the flip-flop 10 is at high level, it is monitored whether or not a job is being executed in the workstation, and when the job is being executed, the flip-flop 10
It has a function to set the . Furthermore, the output signal of the AND circuit 4 is supplied to a link-off control circuit 11. This link-off control circuit 11 supplies a line disconnection control signal L-OFF to a center station (not shown), and also sends a logic level signal to the IJ set terminal of the flip-flop, the set terminal of the flip-flop, and link on/off. It is supplied to the screen creation circuit 9. The link on/off screen creation circuit 9 is connected to the link on control circuit 6.
It also has a function of controlling the display of the CRT display device 12 based on the logic level signal output from the link-off control circuit 11. Next, the operation of the above embodiment will be explained.

First, as an initial state, the flip-flop 5 is in the set state. Yes, the flip-flop 7 is in the reset state.
In this state, when the operator operates the line connection key lc provided on the keyboard 1 of the workstation to establish a line connection with the center station, the control signal KN output from the decoder 2 becomes high level.
Since the flip-flop 5 is in the set state and the output signal of the flip-flop 5 is at a high level, the output signal of the AND circuit 3 is at a high level. Then, a line connection control signal L-ON is supplied from the link-on control circuit 6 to the center station (not shown), thereby bringing the workstation and the center station into a line connection state. Then, the logic level signal output from the link normal control circuit 6 becomes the no level. This signal sets flip-flop 7 and resets flip-flop 5. Further, as the job control circuit 8 becomes operational, a message indicating that the line has been connected is displayed on the screen of the CRT display device 12 provided in the workstation under the control of the link on/off screen creation circuit 9. The job control circuit 8 sets the flip-flop lo when a job is being executed at the workstation.

When a job is completed at the workstation, the flip-flop 10 is placed in a reset state and the flip-flop's inverted output signal goes to the /. In this state, when the operator operates the line disconnection key ld to disconnect the line with the center station, the decoder 2
The control signal KF output from the control signal becomes the level. At this time, the flip-flop 7 is in the set state and the flip-flop 10 is in the reset state, so the output signal of the AND circuit 4 becomes the /. Then, a line disconnection control signal L-OFF is supplied from the link-off control circuit 11 to a center station (not shown), and the workstation and center station are brought into a line disconnection state. Then, the logic level signal output from the link-off control circuit 11 becomes /. This signal causes a flip. Push 7 is reset and flips. step 5 is set and returns to the initial state. Also, under the control of the link on/off screen creation circuit 9, the CRT of the workstation
Switch the screen of the display device 12 to samurai period mode
A message indicating that the line is disconnected will be displayed as shown in the figure. Conventionally, this message indicating that the device is disconnected has been displayed in the command mode to make the operator aware of it, but the message is small and easy to overlook. For this reason, in the present application, the workstation mode is changed to standby mode, and "STAND-BY" is displayed in a large scale on the screen 12a of the CRT display device 12.
Facilitate operator recognition. Note that the YY/MM/DD display in FIG. 2 indicates the current year/month/day, and the HH/MM/SS display indicates the hour/minute/second. As described above, according to the present invention, a line connection key and a line disconnection key are provided on the keyboard of the workstation, and by operating these keys, it is possible to easily connect and disconnect the line with the center station. A line control device can be provided.

[Brief explanation of the drawing]

FIG. 1 is a schematic diagram of a line control device according to an embodiment of the present invention, and FIG. 2 is a diagram showing a display of a line disconnection state in the above embodiment. 1...keyboard, 2...decoder, lc...line connection key, ld...line disconnection key, 5, 7, 10...
...Flip-flop, 6...Link-on control circuit, 8.
. . . Job control circuit, 9 . . . Link on/off screen creation circuit, 11 . . . Link off control circuit, 12 . . . CRT display device. Figure 1 Figure 2

Claims (1)

[Claims] 1. In a system consisting of a plurality of workstations and one center station, a line connection key and a line disconnection key provided on the keyboard of each workstation, and when the workstation is in a line disconnected state, a line connection means for establishing a line connection with the center station in response to the operation of the line connection key; 1. A line control device comprising: a line disconnection means for disconnecting a line. 2. The line control device according to claim 1, wherein in the disconnected state, a display state of a display device provided in the workstation is set to a standby mode and a message indicating the disconnected state is displayed.