JPS6359148A - Telephone line terminal equipment - Google Patents

Abstract

PURPOSE:To inform incoming call by a display by means of a display device by displaying the incoming on a display device while turning on the power of a display section when the incoming is detected with the power of the display section turned off. CONSTITUTION:A power switch PSW is turned off before the incoming state and nothing is displayed on a CRT display 14, then the power supply 12 of the CRT circuit is turned on by a power control signal from a control section 2 and a general display circuit 13 is in the blanking state by a blanking signal. Then a primary color signal from a telephone display circuit 6 is inputted to the CRT display 14, which displays information relating to the telephone call. Thus, the arrival of telephone call is recognized by the display.

Description

[Detailed description of the invention] The present invention will be described in the following order.

A. Industrial field of application B0 Overview of the invention C0 Background and technology 1 Problems to be solved by the invention E6 Means for solving the problems F6 Effects G. Examples [Figures 1 and 2] H6 Effects of the Invention (A. Field of Industrial Application) The present invention relates to a telephone line terminal device, and particularly to a telephone line terminal device equipped with a display.

(B. Summary of the Invention) The present invention provides a telephone line terminal device equipped with a display, in which when a call is received when the power to the display unit is turned off and the display is not displaying information, an indication on the display indicates that the call has been received. In order to be able to recognize the incoming call, when an incoming call is detected, the power to the display section is turned on and the display is displayed.

(C, back j1 technology) With the liberalization of the telephone market in April 1985, when telephone lines were opened to the public, telephone line terminal devices with various functions appeared, and terminal devices equipped with CRT displays were also appearing. be.

(D. Problem to be solved by the invention) In the past, although telephone line terminal devices have become more and more multi-functional, the only way to notify a person of an incoming call was through sound. It wasn't.

Therefore, it is an object of the present invention to make it possible to notify the incoming call by means of a display.

(E. Means for Solving the Problems) In order to solve the above problems, the telephone line terminal device of the present invention has the following steps:
The present invention is characterized in that when an incoming call is detected while the display unit is powered off, the display unit is powered on and displayed on the display.

(F. Effect) According to the telephone line terminal device of the present invention, when an incoming call is detected, even if the power is turned off, the power to the display unit is turned on and the display displays a message. Those who are present can also know that a call has been received by the display.

(G. Embodiment) [FIGS. 1 and 2] The telephone line terminal device of the present invention will be described in detail below according to the illustrated embodiment.

FIG. 1 is a circuit diagram showing one embodiment of the telephone line terminal device of the present invention. In the same figure, 1 is an incoming call detection and ringer part, which is connected to a telephone line consisting of two lines, and when an incoming call is detected (detection of voltage of 75 Hz, 16 Hz), it transmits the fact of incoming call to the control unit 2. By sounding a buzzer, the person is notified of the incoming call.

The control unit 2 includes a CPU and the like, and controls the entire terminal device. Reference numeral 3 denotes a transmitter/receiver section consisting of a bidirectional amplifier, which is connected to a telephone line via a relay RY. This relay RY is turned on and off under the control of the control unit 2, and normally remains off, and turns off when the handset 4 is raised, that is, when the call is placed. Even when a call is made, it can be turned on and off by the control unit 2 and can play the role of sending pulse dialing to the telephone line.

SW is a switch that detects whether the handset 4 is placed or removed, and the detection result is transmitted to the control unit 2. 5 is a part of the DTMF dialer, and when the button is pressed, a tone signal corresponding to the sound is sent to the handset/receiver part 3.
Send to. This tone signal is transmitted to the telephone line via the transmitter/receiver section 3.

Reference numeral 6 denotes a telephone display circuit which receives video data from the control section 2 and processes it so that it can be displayed on a CRT display to generate R, G, and B primary color signals. 7 to 9 are primary color signals R, G, and B9CR output from the telephone display circuit 6.
This is a photocoupler that transmits to the T-side circuit.

10 is a photocoupler that transmits a power control signal outputted from the control unit 2 to control the on/off of the power supply for the CRT side circuit to the CRT side circuit; 11 is a photocoupler that transmits the blanking signal outputted from the control unit 2 to the CRT side circuit; This is a photocoupler that transmits data to the side circuit.

12 is a CRT side circuit power supply, which receives the power control signal transmitted from the control unit 2 to the CRT side circuit through the photocoupler IO and the power control signal (No. 3) from the power switch pSW via the OR circuit OR, and outputs the power. Switched by control signal.

13 is a general-purpose display circuit that processes video signals from television F1 broadcasts or video signals from personal computers or blurry game machines to create primary color signals of R, G, and B. When a blanking signal is received via the photocoupler 11, the output of primary color No. 13 is stopped. Reference numeral 14 denotes a CRT display r, which selectively reproduces information from the primary color signal transmission photocoupler 7.8.9 and information from the general display circuit 13.

In the illustrated telephone line terminal device, the part to the left of the broken line is the telephone side circuit, and the part to the right of the broken line is the CRT side circuit.Since the two have different power supply systems, signal transmission between the two is electrical. This is done using a photocoupler that has a separation function.

Next, circuit operation will be explained.

Normally, the control section 2 does not output a power control signal or a blanking signal. In such normal times, the power switch PSW is turned on, and the general display circuit 1 is displayed on the CRT display, i.
There are two cases: when ordinary information from 3 (pre-vision broadcasting or video information from a personal computer or TV game machine) is displayed, and when the power switch PSW is turned off and the CRT display 14 is not displaying anything. There may be cases.

Next, when someone calls the terminal, a 16Hz, 75V signal is transmitted from the telephone exchange to the terminal. The signal is received by the incoming call detection and ringer part 1,
The incoming call detection and ringer section 1 sounds a buzzer and notifies the control section 2 of this fact. That is, the incoming call detection and ringer section 1 detects the incoming call, and the fact of the incoming call is also transmitted to the control section 2.

As described above, when a call is received, the control unit 2 sends a power control signal and a blanking signal to the CRT side circuit, and also sends information about the phone to be displayed on the CRT display 14, that is, information indicating the arrival of a call, to the phone display circuit 6.
A primary color signal is sent to the telephone display circuit 6 to display information regarding the telephone.

Then, a state is realized in which information regarding the telephone is displayed on the CRT display 14. This is because if the CRT display 14 had been reproducing permission information from the general display circuit 13 before going into the outgoing state, the general display circuit 13 would have been reproducing the permission information from the control unit 2 as the call entered the incoming state. The blanking signal generated from the output signal causes a state in which the primary color signal is not output. Therefore, the primary color signals sent from the telephone display circuit 6 by the photocouplers 7 to 9 are input to the CRT display 14, and information regarding the telephone is displayed on the CRT display 14. Also, the power switch PSW is turned off before the call is received, and the CR
When nothing is displayed on the T-display 15, the power control signal from the control unit 2 turns on the power supply 12 of the CRT side circuit, and then the general display circuit 13 is blanked.A) The primary color signal from the telephone display circuit 6 is set to the blanking state and the primary color signal is C.
The RT display 14 is manually operated, so that the CRT display 14 displays information regarding the telephone. Therefore, the person can also know that there is a call from the display.

FIG. 2 shows an example of telephone-related information displayed on the CRT display 14. As shown in FIG.

Next, when you pick up the handset 4 in response to the call, the control unit 2
Detecting the stiffness, the relay RY is turned on to connect the transmitter/receiver section 3 to the telephone line, and to stop transmitting the power control signal, blanking signal, and video data. Then, the ordinary information output from the general display circuit 13 becomes C.
Status or power supply 1 displayed on RT display 13
3 expires, and the CRT display 14 returns to a state where nothing is displayed, that is, returns to its original state.

In this way, according to the illustrated telephone line terminal device, when a call is received, the power supply 12 of the CRT side circuit is turned off and the CRT side circuit is turned off.
Even if the T-display 14 is in a state where nothing is displayed, the call @ 12 is received, and the CRT display 14 displays a display output from the telephone display circuit 6 indicating the fact that an incoming call has been received. Therefore, the fact that a call has been received can be notified to a person not only by sound (but also by display on the CRT display 14).

If a call arrives while the general display circuit 13 is displaying normal information, the display of the normal information is completely turned off and only the information regarding the phone to notify the fact of the incoming call is displayed on the CRT display 13. Instead of displaying the information, the incoming call may be notified by superimposing information about the phone that notifies the incoming call on the display of normal information. In such a case, general display circuit 1
3, without transmitting a blanging signal from the control unit 2 via the photocoupler 11. However, even if superimposition is used to notify an incoming call, in order to clearly display the incoming call area, the general display circuit 13 is only used during the period when the electron beam scans the area on the screen displaying information about the phone. Blanking may also be applied. If you do this, the
.

Rather than a blanking signal that goes "high" and then leaves it alone, an appropriate blanking signal that goes "high" at some times and "low" at other times is sent from the control unit 2 to the general display circuit 13 via the photocoupler 11. Is it necessary to send out?

Further, the general display circuit 13 may not be provided and the CRT display 14 may be used only for displaying information regarding the telephone. In this case, normally CR
The T-display 14 does not display, and C is displayed only when a call is received.
Since information regarding the telephone call can be displayed on the RT display 14, it becomes easier to recognize the fact that a call has arrived from the display.

(H. Effects of the Invention) As described above, the telephone line terminal device of the present invention includes a display, and when an incoming call is detected while the display unit is powered off, the display unit is powered on. The invention is characterized in that the information is displayed on the display.

- Therefore, according to the telephone line terminal device of the present invention, when an incoming call is detected, even if the power is turned off, the power to the display unit is turned on and the display displays a message.
A person near the terminal device can also know the incoming call from the display.

[Brief explanation of drawings]

1 and 2 are for explaining one embodiment of the telephone line terminal device of the present invention, in which FIG. 1 is a circuit diagram and FIG. 2 is a front view of a display screen showing an example of information regarding the telephone. It is. Explanation of symbols 2...Display power supply, 14...Display.

Claims (1)

[Claims] (1) A telephone line terminal device comprising a display, and when an incoming call is detected while the display unit is powered off, the display unit is powered on and displayed on the display.