JPS60240258A - Automatic start type automatic answering telephone set - Google Patents

Abstract

PURPOSE:To eliminate the need for the changeover between the automatic answering mode and the normal mode by designing the device that the operation of the automatic answering function is started automatically when the consecutive time of a call signal reaches a preset reference value. CONSTITUTION:Since a detection signal is inputted from a call signal detection circuit 4 when a call signal is transmitted from a line, a CPU8 judges that the call tone stops below m times or is consecutive for m time or over, and when the signal reaches the m times, a line closing switch 2 is changed over to attain the talking state and a response message is transmitted to a line. After the end of reproduction of the response message is awaited, the CPU8 outputs a tape recorder drive signal for business message recording to record the message. On the other hand, when the user hooks off the handset until the number of the call tones reaches the consecutive m times, the CPU8 allows the user for the operation as the normal telephone function.

Description

[Detailed Description of the Invention] <Industrial Application Field> The present invention provides an automatic start-up system that automatically starts operation when a telephone call is received and the handset is not taken off-hook for a certain period of time. This invention relates to an answering machine.

<Prior art> An answering machine has an answering machine function that detects the arrival of a calling signal from a line, forms a communication circuit, sends out a response message, and records a message from the caller. In general, when the answering machine is set to answering mode using a mode switching means such as a function button, if the above-mentioned answering machine function is performed and the mode switching means is set to normal mode, it will function as an answering machine. It is configured so that it can only operate as a normal telephone.

<Problems to be Solved by the Invention> As mentioned above, in the conventional device, it is necessary to write and forge the mode. This means that it does not perform its function.

The present invention has been made with the object of solving these problems and providing an automatic starting answering machine that does not require mode setting and does not cause any inconvenience caused by forgetting to set the setting.

<Means for Solving the Problems> In order to achieve the above-mentioned object, the present invention provides a ring time measuring means for measuring the duration of a ringing signal received from a telephone line, and an off-hook device for a handset in an answering machine. The hook switch detection circuit detects the duration of the ring signal and compares the measured duration of the ring signal with a preset reference value, and determines the duration of the ring signal by the time the hook switch detection circuit detects the off-hook of the receiver. The present invention is characterized in that it includes a control section that outputs a control signal to start the operation of the answering function when the time reaches a reference value.

For example, the duration of the ringing signal and the reference value to be compared with it can be substituted by the number of rings of the ringing signal. If the handset is not picked up even after reaching this point, it is assumed that the person is not present and the answering function is activated. In other words, even if a call signal is received, the answering machine function does not start immediately, so if you pick up the handset during that time, it can be used as a normal telephone, and if the handset is not picked up for a certain period of time, the answering machine function will not start immediately. Since the answering function starts at the time of the call, there is no possibility that the answering function will not be performed because the user forgets to set the mode.

<Example> The present invention will be specifically described below with reference to an illustrated example.

FIG. 1 is a block diagram, FIG. 2 is a functional block diagram, and FIG. 3 is a flowchart showing control operations.

In FIG. 1, 1 is a line terminal, 2 is a line closing switch that puts the line into a talking state upon receiving a calling signal from the line, 3 is a switch control circuit that operates switch 2, and 4
is a ringing signal detection circuit that detects a ringing signal from a line;
Reference numeral 5 denotes a cheap recorder unit that records and reproduces response messages and business messages from the caller; 6 a hook that detects whether the handset 7 is placed down or lifted and placed off-hook; This is a switch detection circuit.

8 is a control unit configured using, for example, a one-chip microcomputer, and includes a CPU 9, a ROM 10 for programs, a RAM 11 for various control data, an input/output board 12, etc. The entire device is controlled by the program.

Next, refer to Figure 2 and follow the flowchart in Figure 3.
Explain the operation.

When a calling signal is sent from the line through the line terminal 1, the CPU 9 moves from the start state of step (1) to step (2), and a detection signal of the calling signal is input from the calling signal detection circuit 4. The CPU 9 determines that there is a ringing signal, moves to step (3), judges whether the ringing tone stops after less than m times, or continues m times, and when it reaches m times, moves to step 4. In this step 4, C
The PU 9 outputs a switch-on signal to the switch control circuit 3 to switch the line closing switch 2 from the solid line to the broken line in FIG.
Subsequently, the process moves to step (5), where a tape recorder drive signal is output, and the tape recorder section 5 is driven.
A prerecorded response message is reproduced and sent to the line through the line terminal 1. After waiting for the end of the playback of this response message, the process moves to step (6), where a tape recorder drive signal for recording the business message is output.
The message is recorded. Then, in the next step (7), it is determined that the recording has ended depending on whether the other party hangs up the telephone or silence continues for a certain period of time, etc., and the process moves to step (8), where the cheap record section 5 stops. In the next step (9), the CPU 9 outputs a switch-off signal to the switch control circuit 3 to switch the line closing switch 2 to the solid line in FIG. and returns to the standby state of step (2).

On the other hand, at the stage of step (3), the number of consecutive rings is m.
If the user picks up the handset 7 by the time the handset 7 is reached, a detection signal indicating that the handset 7 has been off-hook is input from the hook switch detection circuit 6 to the CPU 9.
The CPU 9 determines that the number of times is less than m and moves to step (10). Then, the CPU 9 outputs a switch-on signal to the switch control circuit 3, and the line closing switch 2 is switched to the broken line side to enter the talking state, and normal telephone function operations are performed [steps (1, 1) )]. In the next step (12), when the hook switch detection circuit 6 detects that the handset 7 has been put down, a decision is made to end the call, and when the call ends, the process moves to step (9), and the above-mentioned The call state is canceled and the device returns to the standby state.

Note that the reference value n in step (3) may be set to an appropriate value depending on the actual situation of use, and it is convenient if this value is not fixed and can be changed to any value. It is.

<Effects of the Invention> As is clear from the description of the embodiments above, the present invention has the following effects:
There is no need to switch between answering mode and normal mode, and the answering function automatically starts when the duration of the ringing signal reaches a preset reference value, so you can easily set the mode. This has the advantage of improving the practicality of the telephone answering machine, since there will be no failures such as failures due to forgetting the telephone answering machine.

[Brief explanation of the drawing]

FIG. 1 is a block diagram of an embodiment of the present invention, FIG. 2 is a functional block diagram of the same as above, and FIG. 3 is a flowchart showing control operation of the same as above. 1...Line 2...Line closing switch 3...Switch control circuit 4...Call signal detection circuit 5...Tape recorder section 6...Hook switch detection circuit 7...Telephone receiver 8 ...Control unit, 9...CPU Applicant: Sharp Co., Ltd. Agent: Haru, '-P' Figure 1, Figure 2, C

Claims (1)

[Claims] 11 In an answering machine equipped with an answering function that forms a telephone call circuit by receiving a call signal from a line, sends a response message, and records a message from the caller, the call signal received from the line A ring time measuring means measures the duration of the call signal, a hook switch detection circuit detects off-hook of the handset, and a hook switch detection circuit compares the measured duration of the ring signal with a preset reference value. and a control section that outputs a control signal to start the operation of the answering machine when the duration of the ringing signal reaches a reference value before the handset is detected as being off/off/2nd by the circuit. Automatic start-up answering machine.