JPS58148555A - Reception system of remote control signal - Google Patents

Abstract

PURPOSE:To receive a remote control signal surely, by gating a recording and reproducing amplifier when one period's share of the remote control signal is received in the presence of reproducing sound from a tape. CONSTITUTION:When an output of the recording and reproducing amplifier 12 has an output as in the case of transmission of response message or reproducing state of business message, and when the remote control signal comes from a main trunk terminal 7, the signal is inputted to a buffer circuit 29. A CPU30 fetches each digit of the remote control signal in an RAM33 and stores it in an area 33-1. When the CPU30 complets the fetch of one periods's share of the remote control signal and recognizes that the signal is coincident with a code set in the RAM33, a control terminal of a gate circuit 20 is controlled via the circuit 29. Then, the circuit 20 is closed, the output from the amplifier 20 is stopped and the remote control signal from the 2nd cycle and succeeding is received surely.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention provides an answering machine having a remote control function, in which messages recorded while the user is away are sent from a remote location to the answering machine via a central office line in order to know the contents of the message. This invention relates to a method for receiving digit remote control signals (hereinafter referred to as remote control signals).

The above-mentioned remote control signal may be received when a response message is sent out or when a message is played back by the remote control. There was a drawback that the receiving level of the bell and the remote control signal was greatly different, and the remote control signal was canceled by the message, and the answering machine could not enter the remote control state even if the remote control signal was received.

The present invention aims to eliminate such drawbacks of the conventional technology, and is aimed at eliminating the drawbacks of the conventional technology, and is aimed at eliminating the disadvantages of the prior art.
When the M number arrives, after receiving one cycle of remote control signals,
To provide a remote control signal receiving system in which a gate of a recording/reproducing amplifier is closed, reproduction sound from a tape is stopped, remote control signals are easily received, and an answering machine is placed in a remote control state.

Below, drawings showing embodiments of the present application will be described.

Figure 1 is a block diagram showing the transmission/reception system including the answering machine, where ■ is the remote control signal oscillator, and 2 is the telephone at the destination (
3 is a telephone line, 4 is a telephone office, 5 is an answering machine, and 6 is the telephone set.

Figure 2 is a block diagram of an answering machine, in which 7 is a central office line terminal, 8 indicated by a dotted line is a hybrid circuit with specific frequency characteristics, 8-1 is a resistor, 8-2 is a DC blocking capacitor,
8-3 is a hybrid transformer, 8-4, Hashi-5, 8-
6 is a resistor, 8-7 is a capacitor, 9 is a contact point of Y1 relay U which will be described later, 1o is a central line transformer, 11 and 14 are contacts of Y21J relay 5 which will be described later, and hill is a response message tape 16 and requirements which will be described later. A recording/reproducing amplifier for the message tape 19; 17 is a contact for the Y3 relay, which will be described later; 15 is a response head for recording and reproducing a response message tape 16, which will be described later; 16 is a response message tape; A message head for recording and playing back a message tape 19; 19 is a message tape; (
b) is a gate circuit composed of, for example, a transistor, which gates the response message and the task message;
2] is a remote control signal amplification circuit that amplifies the remote control signal from the hybrid circuit 8 mentioned above; η is a waveform shaping circuit that shapes the waveform of the remote control signal amplified by the remote control signal amplification circuit 21 mentioned above; and B is the above-mentioned office line terminal. 7 is a bell signal receiving circuit that receives a bell signal coming from terminal 7, and 5 is activated when the above-mentioned bell signal receiving circuit is activated by the above-mentioned bell signal from station line terminal 7. Y to switch when recording from station line terminal 7
2 relay, + is activated when the remote control signal amplification circuit 21 and waveform shaping circuit η are operated by the remote control signal from the office line terminal 7. 9 is a response tape drive circuit that drives and controls the response message tape 16 described above; 9 is a buffer that inputs and outputs the various signals described above and transfers them to and from the CPU 3o (described later); The circuit, the nod is the central processing unit (hereinafter referred to as CP)
In this embodiment, a microprocessor is used (hereinafter referred to as U), which has the function of calculating input information and controlling the operation of other devices, and 31 is a program memory that stores the operation order (hereinafter referred to as U). 32 is a remote control signal determination program storage circuit that determines whether or not it is a remote control signal; 33 is a memory (hereinafter referred to as ``5'') that temporarily stores the results of the arithmetic processing performed by the CPU 30;
3-1 is a digit capture area for capturing each digit of a remote control signal; 33-2 is a digit capture area; and 33-1 is a digit comparison area for comparison with each digit of 33-1.

The present invention configured as above will be described in detail.

When a bell signal arrives from the central office line end ear, the signal is received by the bell signal receiving circuit and input to the buffer circuit 9. The signal input to the buffer circuit 9 is processed by the CPU 3) to operate the Y1 relay group. By driving the Y1 relays, contact 9 switches from the illustration, and the station line end -f7
is blocked to the central line transformer 10 side. When the office line terminal 7 is closed, the CPU 30, via the buffer circuit 4,
The response tape drive circuit is operated to run the response message tape 16, and the pre-recorded response message is reproduced from the response head and amplified by the recording/reproducing amplifier pressure, and then passed through the office line transformer 10 to the office line terminal. 7
sent to. When the response message ends, the CPU I
) recognizes this and operates the Y2 relay 6 via the buffer circuit 4. Furthermore, the CPU 30 operates the business tape drive circuit I to run the business message tape 19, automatically entering the recording state, and the caller speaks the business according to the instructions of the response message, and the content is recorded as the business message. Recorded on Kawa Tape 19.

Next, when there is an output from the recording/reproducing amplifier ν while the response message is being sent or when the message is being played back, the hybrid circuit 8, which is configured to match at a specific frequency, In the hybrid transformer 8-3, the sound from the recording/reproducing amplifier 2 is suppressed by the hybrid effect. Here, when a remote control signal arrives from the office line terminal 7, the remote control signal is transmitted to the remote control signal amplification circuit via the hybrid transformer 8-3 because the sound from the recording/playback amplification lid pressure is suppressed as described above. 21, the waveform is shaped by the waveform shaping circuit ρ, and the signal is inputted to the buffer circuit α.

The CPU i) reads each digit of this remote control signal under the control of the remote control signal determination program storage circuit section.
It is stored in the digit capture area feather-1 in AM33. When the CPU 30 finishes taking in one cycle of the remote control signal and recognizes that the code matches the code preset in the RAM 33, it controls the control terminal of the gate circuit via the buffer circuit 4. As a result, the gate circuit is closed, the output from the recording/reproducing amplifier is stopped, and the remote control signal from the second cycle can be reliably received.

Next, when the second period of the remote control signal arrives, similarly to the first period, the CPU 30 converts each digit of the remote control signal into the digits in the intestine under the control of the remote control signal judgment block. It is stored in the comparison area 33-2.

When the CPU 30 finishes capturing two cycles of the remote control signal, the CPU 30 stores the digit capture area 33 in the RAM 33 in which the previously captured digit signal is stored.
-1 and the code in the digit comparison area 33-2 are compared to determine whether they match.

Furthermore, this remote control signal is received multiple times, and the CPU 30
repeats the above-mentioned determination and determines that they are the same code, then restores Y2 relay 5 via buffer circuit 4, Y
3 Activate relay I. Y21J Leh 6 restored, Y3
By operating the relay, the message tape 19 is placed in a reproducing state.

As is clear from the above description, in the present invention, when a remote control signal arrives while the recording/playback amplifier has an output, such as when a response message is being sent or a message is being played back, the gate circuit as described above operates. Accordingly, the contents of the response message or the business message are not sent to the office line terminal via the office line transformer, and the remote control signal can be reliably received, which is highly effective.

[Brief explanation of drawings]

The drawings show an embodiment of the present application, and FIG. 1 is a block diagram showing a transmission/reception system including an answering machine, and FIG. 2 is a block diagram of the answering machine. 1...Remote control signal oscillator, 2...Telephone on the go,
3... Office line, 4... Telephone office, 5... Answering machine, 6... Telephone, 7... Office line terminal, 8... Hybrid circuit, 9... Y1 contact, 10... Office line transformer, 11... Y2 contact, Crime... Recording and playback amplifier,
U...y3 contact, 14...y2 contact, 151...
Response head, Tsukasa...Response message tape, 〃...
・y3 contact, sliding...message head, 19...message tape, I...gate circuit, 21...remote control signal amplification circuit, ρ...waveform shaping circuit, n... Bell signal receiving circuit, required...Y1 relay, 5...Y2 relay, addition...Y3 relay, I...message tape drive circuit, foot...response tape drive circuit, 4...buffer Circuit, I...CPU 131...ROM, 132...
・Remote control signal judgment program storage circuit, wings...R 膓.

Claims (1)

[Claims] When a bell signal is received from the central office line, a pre-prepared response message is sent to the central office line, and after the response message is finished, the caller's message can be heard over the central office line. , in an answering machine in which a remote control signal is sent from a remote location through a central office line so that messages recorded while the user is away can be listened to through the central office line; A remote control signal receiving method characterized in that when a signal arrives, a recording/reproducing amplifier is gated at the time when one cycle of the remote control signal is received, thereby making it easier to receive the remote control signal.