JPS62100064A - Home telephone set - Google Patents

Abstract

PURPOSE:To simplify the constitution of the transmitting part by transmitting the data signal and the sound signal between the master equipment and the terminal telephone set at the base band area and by the time base system. CONSTITUTION:When an incoming detecting circuit 20 detects the line wire incoming in a master equipment 1, a CPU 17 sends the line wire incoming signal through serial data I/F 22 to signal lines L3 and L4. Thereafter, the CPU 17 sends the line wire incoming sound to the signal lines L3 and L4 while the CPU 17 drives a sound source 18. When the hand set of a terminal telephone set 2 is raised, a CPU 9 detects the line wire response, and the base band data are transmitted to the master equipment 1 by the base band data. When the line wire calling is executed during the extension call, the master equipment 1 injects forcibly the line wire calling pulse to the signal lines L3 and L4 during the extension call, changes over relays Ry1 and Ry2 of a terminal telephone set 2 to the line wire calling condition and transmits the line wire calling signal from the master equipment 1.

Description

DETAILED DESCRIPTION OF THE INVENTION [Technical Field] The present invention relates to a home telephone device that transmits voice and data over the same signal line.

[Background technology]

FIG. 4 shows an example of the system configuration of a conventional home telephone device, in which extension call signals and data signals are transmitted through signal lines L3. L4
When transmitting simultaneously on a line, a signal transmission method in which when audio is transmitted using a baseband signal, the data signal is transmitted using the carrier signal, and conversely, when the data signal is transmitted using the baseband signal, the audio is transmitted using the carrier signal. was used. Fig. 5 shows an example in which the extension voice is transmitted using the baseband as shown in Fig. 5 (a), and the data signal is transmitted using the AM type carrier signal as shown in Fig. 5 (b). is superimposed on the DC voltage Eo. The main equipment to achieve this signal transmission method (
1) and the terminal telephone (2) are shown in FIG. A low pass filter (LPF) +31 (4) for superimposing on L4,
The main device (1
) and the terminal telephone (2), and the system as a whole requires a large number of parts, resulting in increased costs and a larger size. In addition, in Fig. 6, terminal telephone +21 f''i, CPU t9 in addition to the above
+, a ringer (lO), a selection signal sending unit (11), a communication circuit network (I2), an amplifier (13), a speaker 04), a power supply α5), etc., and the main device f1) is In addition, there is a hold music circuit α6), a CPU (17), a sound source (18)
), a power supply 09), etc., and outside line calls are made using outside line signal lines Ll and L2.

[Purpose of the invention]

The present invention has been provided in view of the above-mentioned conventional example, and an object of the present invention is to provide a home telephone device that enables baseband transmission of voice signals and data signals, and reduces the cost of the entire system. It is something.

[Disclosure of the invention]

In the present invention, as shown in FIG. 1, the terminal telephone (2) or main device (1) that sends signals when transmitting call display data or extension call data from an outside line is based on the data transmission time period. Sends data using band pulse method,
On the other hand, when it is necessary to send an extension call or a paging signal, these voice signals are sent during a time period when data transmission is not being carried out.Figure 2 shows the main device f that achieves this time-division signal transmission.
1+ and a block diagram of an embodiment of the terminal telephone (2). The operation of the embodiment in FIG. 2 will be described below with respect to an example in which an outside call is received. First, earthenware [+11
The incoming call detection circuit (20) detects an incoming external call at C.
The signal is sent to the PU (Iη). Next, the C terminal telephone (2) detects the incoming outside line signal using the serial data I/FM and sends it to the CPU (91). 91 is enabled to receive the outside line ringing tone through the relay Ryt and Ry 2 contacts.After this, the CPUQ power of the main device Fil drives the sound source 08) and sends the outside line ringing tone to the signal lines L3 and L4. and the terminal phone (
In 2), an outside line ringing tone is output from the speaker (14) via the relay Ryl, Ryz contact, and amplifier (13). Here, when the handset is raised to answer an outside line using the terminal telephone (2), the hook switch F-1 is connected to the outside line, and at the same time, the CPU (91) detects the outside line response and sends the response signal to the baseband pulse. Depending on the data, the main device fi+
Needless to say, the timing of data transmission at this time is when the external line ringing tone from the main device f1+ is interrupted. When the main device +11 detects this outside line response signal, it stops sending out the outside line ringing tone from the sound source (country), and the terminal telephone (2) enters the state of talking with the outside line.The call ends and returns to the original state. When recovering, the CPU (91) of the terminal telephone (2) generates a signal to that effect and transmits the signal to other terminal telephones (2) and the main unit [+1].
In addition, if an outside line call is made during an internal call, the main device (1) transmits the signal to the signal line L3. An outside call pulse signal is forcibly injected into L4 as shown in FIG. Upon receiving this message, the terminal telephone (2) which is in the middle of an extension call relays Ry+ to the outside line calling state.
, switches the RY2 contact and sends a call enable signal for an incoming outside line call to the main device (1), and transmits an outside line call signal from the main device (1). At this time, the interrupt signal from the main device f1) overlaps with the extension call signal, but if an interrupt signal with about 10 pits and a transmission speed of 10 Kbit is used, the data transmission time is at most 1 m s.
It can be said that ec has almost no effect on calls.

〔Effect of the invention〕

As described in detail above, the Kihatsu F3A simplifies the configuration of the transmission unit by transmitting data and voice in a time-division manner using the baseband, and even if data transmission is required during an internal call, it can be done in a short time. Sending data by interrupt
Therefore, it has the effect that data transmission can be performed with almost no effect on extension calls.

[Brief explanation of drawings]

FIG. 1 is a waveform diagram of an example of signal transmission according to an embodiment of the present invention, FIG. 2 is a block diagram of the main device and terminal telephone set as described above, and FIG.
The figure is a waveform diagram of an example of signal transmission of an interrupt signal during an extension call, Figure 4 is the configuration of the conventional example, and Figures 5 (a) (b)
) are waveform diagrams of transmission signals for extension voice and data in the conventional example, respectively, and FIG. 6 is a block diagram of the main device and terminal telephone set in the same example, t1+ is the main device, (2) is the terminal telephone set, L3.
L4 is a signal line.

Claims (2)

[Claims] (1) Consisting of a signal line that commonly transmits voice signals and data signals of external lines and extension lines, a main device that controls the system, and a plurality of terminal telephones controlled by this main device, the main device and The data signal and voice signal are transmitted to and from the terminal telephone using a baseband method, and the transmission time of the data signal and voice signal is time-division transmission so that the transmission times do not overlap with each other. Home telephone equipment. (2) The home telephone device according to claim 1, further comprising interrupt means for superimposing a data signal by forced interruption when data transmission is required during a voice call.