JPS63226157A - Dialing equipment - Google Patents

Abstract

PURPOSE:To attain a communication by a battery, etc., in a telephone system with the use of a local mode even when an external supply power source is disconnected, by providing a multi-mode operated by only the control of a host CPU, and the local mode operated without the control of the host CPU, on a dialing equipment. CONSTITUTION:A key input from a key detecting circuit 3 is all inputted to a dialing equipment 2, and also, sent to a host CPU through an interface part 5. The host CPU 6 decides it, sends an instruction to the dialing equipment 2, and the dial device 2 operates a communication circuit 1. Also, a voltage monitoring circuit 4 detects the state of an external supply power source, and transmits the information of the power source disconnection of the dialing equipment 2, when the power source is disconnected. When the power source disconnection is detected, the dialing equipment 2 shifts a multi-mode to a local mode, and operates the communication circuit 1 by a battery, etc., provided on the inside of a telephone system, by an operation which is not executed by a control of the host CPU.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a dialing device used in a telephone device having a host CPU.

(Conventional technology) A conventional dial device will be explained with reference to FIG.

FIG. 4 is a schematic block diagram of a telephone device equipped with a conventional dialing device. In the same figure, 11 is a communication circuit, 12
13 is a dial device, 13 is a key detection circuit, 14 is a voltage monitoring circuit, 15 is an interface section, and 16 is a host CPU. The telephone call circuit 11 is controlled by a dial device 12, and the operation of the dial device 12 is controlled by a host CPU 16 via an interface section 15. Key detection circuit 1
3 performs key power on the upper CPU 16 and voltage monitoring circuit 1
4 monitors the external power supply of this telephone device.

Next, the operation will be explained.

The key input from the key detection circuit 13 is input to the host CPU 16, which judges this and sends an operation command for the call circuit 11 to the dial device 12 via the interface section 15 if the input is related to a call. The dial device [12 receives this command and operates the call circuit 11,
This communication circuit 11 operates as a telephone device. Further, the voltage monitoring circuit 14 detects the state of the power supply supplied from the outside, and in the case of power off, sends the information to the host CPU 16, and the operation of this device is stopped.

In this way, even a telephone device having a conventional dialing device can operate as a telephone circuit under control from the host CPU.

(Problems to be Solved by the Invention) However, in the conventional telephone device described in Section 2, the dialing device operates only under the control of the host CPU, so if the external power supply is cut off, the telephone call circuit will not operate. There was a problem in that it was impossible to make calls.

The present invention provides a dialing device that allows telephone calls even when external power supply is cut off.

(Means for Solving the Problems) The present invention solves the problems described in 1.
In a dialing device of a telephone device connected to U via an interface section, the dialing device is provided with an operation mode controlled by the upper CPU and an operation mode not controlled, and when the external power of the telephone device is turned off, , switching to an operation mode that is not controlled by the host CPU;
It is possible to make calls using the internal battery of the telephone device.

(Function) With the above configuration, the present invention provides a dial device with a host CPU.
Since the dial device has an operation mode controlled by the host CPU and an operation mode not controlled by the
The communication circuit is operated under the control of the CPU, but when the external power is cut off, it switches to an operation mode that is not controlled by the host CPU.

The telephone circuit can be operated using a battery installed inside the telephone device to continue the telephone conversation.

(Example) An example of the present invention will be described with reference to FIGS. 1 to 3. FIG. 1 is a schematic block diagram of a telephone device equipped with a dialing device according to an embodiment of the present invention, FIG. 2 is an operation flowchart of the dialing device according to the same embodiment, and FIG. 3 is a schematic block diagram of a telephone device equipped with a dialing device according to the same embodiment. FIG. 2 is a schematic block diagram of the telephone device during a power outage. In the figure, 1 is a telephone call circuit, 2 is a dial device, 3 is a key detection circuit, 4 is a voltage monitoring circuit, 5 is an interface section, and 6 is a host CPU.

−3= The dial device 2 controls the telephone call circuit 1 and the key detection circuit 3
Key human power is provided. The host CPU 6 is connected to the dial device 2 through an interface section 5. A voltage monitoring circuit 4 monitors the external power supply of this telephone device.

Next, the operation will be explained.

All key inputs from the key detection circuit 3 are input to the dial device 2 and further sent to the host CPU via the interface section 5. The host CPU 6 determines this, sends a command to the dial device 2, and the dial device 2 operates the call circuit. Further, the voltage monitoring circuit 4 detects the state of the external power supply, and in the case of a power cutoff, transmits information on the power cutoff of the dial device 2. When the dial device 2 detects a power outage, it shifts the operation from the multi mode to the local mode as shown in FIG.
By operation not under the control of U, the telephone circuit 1 is operated by a battery or the like provided inside the telephone device. Similarly, when changing from a power-off state to a power-off state, the dial device 2 does not return its operation from local mode to multimode. Further, these switchings are performed while maintaining the state of the communication circuit, such as opening/closing of lines other than the external power supply, monitor 0N10FF, etc.

(Effects of the Invention) According to the present invention, the dial device is provided with a multi-mode in which it operates only under the control of the host CPU, and a local mode in which it operates without the control of the host CPU. Even if the power supply is cut off, it is possible to use the local mode to make calls using the battery inside the telephone device.

[Brief explanation of drawings]

FIG. 1 is a schematic block diagram of a telephone device equipped with a dialing device according to an embodiment of the present invention, FIG. 2 is an operation flowchart of the dialing device according to the same embodiment, and FIG. 3 is a schematic block diagram of a telephone device equipped with a dialing device according to the same embodiment. Schematic block diagram of a telephone device during a power outage. FIG. 4 is a schematic block diagram of a telephone device equipped with a conventional dialing device. 1. Call circuit, 2... Dial device, 3...
Key detection circuit, 4...Voltage monitoring circuit, 5...Interface section, 6...''1st place CPU. Patent applicant: Matsushita Electric Industrial Co., Ltd. Figure 1 Figure 2

Claims (1)

[Claims] In a dialing device of a telephone device connected to a host CPU via an interface section, the dialing device is provided with an operation mode controlled by the host CPU and an operation mode not controlled by the host CPU, and the external power supply of the telephone device is cut off. A dialing device characterized in that the dialing device sometimes switches to an operation mode that is not controlled by the host CPU, and makes it possible to make a call using the internal battery of the telephone device or the like.