JPH0340636A - Radiotelephony system - Google Patents

Abstract

PURPOSE:To surely detect data from a slave set by devising a telephone system such that a master set sets a detection time interval in response to the number of slave sets be called after data transmission for the callout at the callout from the master set and a slave set replies the call in time division in response to its own identification signal and the call data. CONSTITUTION:When an incoming signal comes though a telephone circuit, a master set sends a call data including the slave set number of each slave set to all slave sets or slave of a specific constant number at a time t1. In receiving a call data, a slave set decides whether or not the call is given to itself based on its own slave set number stored in a memory section 40 and a data signal from a MODEM 12', sets a reply timing based on number of slave sets included in the callout data and to be called and the transmission order, applies MSK modulation to the reply data for the transmission. The master set sets a setting value N and designates a range of the change in the address counter after the transmission of the callout data and detects the reply data from the slave set.

Description

DETAILED DESCRIPTION OF THE INVENTION (a) Industrial Application Field The present invention relates to a wireless telephone device, and in particular to a base unit connected to a telephone line and a plurality of slave units connected to the base unit via a wireless line. The present invention relates to a wireless telephone device having the following.

(b) Prior art Conventionally, as this type of radio telephone device, for example, the
The one disclosed in Publication No. 55333 (I-10487/26) is known.

This type of wireless telephone device has a base unit connected to a telephone line and a plurality of slave units connected to the base unit via wireless links,
When a call is received, the base unit puts the repeater control circuit into the incoming call state based on the detection of an incoming call signal from the telephone line, and transmits a ringing tone from the tone generation circuit to the slave unit. The handset operates a ringing tone generation circuit based on the ringing tone from the base unit, and emits a ringing tone from a speaker.

In such a calling state, when the hang-up circuit of the handset is turned on, the presence or absence of a mute signal from the base unit is first determined, and if there is no mute signal, a hang-up tone is transmitted to the base unit. The base unit completes the hang-up operation on the telephone line based on the hang-up tone from the slave unit, and sends a mute signal back to the slave unit.

The handset is prohibited from transmitting and talking based on the mute signal, but since the handset that sent the hang-up signal refuses to be controlled based on the mute signal, the handset and the base unit are one-on-one. are connected by the relationship.

(C) Problems to be Solved by the Invention According to the above-mentioned conventional technology, it is possible to make the connection between the base unit and the slave unit as well as the privacy of the conversation distantly possible, but the transmission from the base unit to the slave unit can be made distantly possible. There is a risk that it will not be possible to determine whether or not the calling signal received by the handset is reliably received by the handset, and the problem may arise in which the calling signal continues to be sent unnecessarily to the handset that cannot receive the calling signal. There is.

Also, if multiple handsets send out hang-up signals at the same time, interference will occur between the signals sent from the handsets, and the base unit will not be able to detect the hang-up signal, even if a hang-up operation is performed. Regardless, there is a risk that the problem of not being able to connect to the telephone line may occur.

Furthermore, during a transfer operation, for example, when transferring from one handset to another, or from a base unit to a specified handset, the call tone is designed to be sent only to the specified handset, and the call tone is not specified. A handset, ie, a handset that does not receive a ringing tone, cannot be placed into a talking state even if the hang-up circuit is operated.

(d) Means for Solving the Problems In view of the above points, the present invention includes a base unit connected to a telephone line, and a plurality of slave units connected to the base unit via wireless lines, When an incoming call or an extension call is received, the base unit sends data including an identification signal of each slave unit to the plurality of slave units, and also determines the time width for detecting the data sent from the slave units. The setting is made according to the number of handsets, and the handset is configured to transmit data in response to the data from the base unit in a time-sharing manner. When a calling operation is performed to call the specified handset or base unit, the base unit or handset that performs the calling operation has a ringing classification to ring the specified handset or base unit. It is characterized in that it is adapted to transmit data including signals.

(E) Effect According to the present invention, when a call arrives or an extension call is made, the base unit sends data including an identification signal of each slave unit to a plurality of slave units, and the slave unit transmits data including an identification signal of each slave unit to a plurality of slave units. The data of each response is sent in special divisions. Further, the base unit detects data from the slave units with a detection time width corresponding to the number of slave units to be called.

Furthermore, when a call operation is performed on the base unit or any of the slave units to call the specified slave unit or base unit, the base unit or slave unit that performed this calling operation will call the specified slave unit or base unit. Data including ringing classification data for making a ringing tone sound is sent to the user.

(v) Embodiment Figure 1 shows the constituent countries of the present invention, and (1) shows the telephone line (L
), (2), (3), and (4) are connected to the base unit (1).
and multiple slave units connected via wireless lines.

FIG. 2 is a diagram showing an embodiment of the base unit in the wireless telephone device of the present invention. (5) is a receiving antenna, (6) is a high-frequency amplifier circuit that amplifies the received high-frequency signal from the receiving antenna (5), (7) is a receiving PLL section that serves as a local oscillation circuit, and (8) is a high-frequency amplifier circuit ( (9) is a mixing circuit that mixes the high frequency signal from 6) and the oscillation signal from the reception PLL section (7) to derive a predetermined intermediate frequency signal;
), an intermediate frequency amplification circuit that amplifies the intermediate frequency signal from (
10) is a detection circuit that detects the intermediate frequency signal from the intermediate frequency amplification circuit (9), (11) is an amplifier that amplifies the detection signal from the detection circuit (lO), and (12) is the detection circuit (10).
) is a modem for converting the detected signal from the control circuit (13) into digital data.
supplied to The control circuit (13) executes the program stored in the program memory (13a).
U (13b), a data memory (13C) in which the number of connected handsets, identification signals (handset numbers) of each handset, etc. are stored in order of priority, and 10 ports (13d). It is composed of Further, the modem (12) converts the digital data from the control circuit (13) into M S K (Min
imum 5hift Keying) signal. (14) is a modulation circuit to which the signal from the modem (12) is supplied as a modulation signal and the transmission PLL section (15) is supplied as a modulated signal; (16) and (17) are the modulation circuit (14); A transmission amplifier circuit for amplifying the output to a predetermined transmission level, (18) a transmission antenna, (19)
) has a common terminal, a data terminal, an extension terminal and an outside terminal connected to the modulation circuit (14), and the control circuit (13)
a first switch controlled by a control signal (Sl) from;
(20) has an extension terminal connected to the extension terminal of the first switch (19), a common terminal connected to the microphone (21), and an external terminal connected to the hybrid lance circuit (not shown). The second switch (22) is controlled by the control signal (S, ) from the control circuit (13), which is a common terminal connected to the output end of the amplifier (11), and is connected to the vibe not transformer circuit. A third switch (23) has an outside line terminal and an extension line terminal and is controlled by a control signal (S3) from a control circuit (13), and a speaker (24).
A common terminal connected to the hybrid transformer circuit, an external line terminal connected to the hybrid transformer circuit, and an extension terminal connected to the extension terminal of the third switch (22), and the control signal (S4) of the control circuit (13) controlled fourth switch, (25)
is placed on the power supply line of the receiving system circuit, and is connected to the control circuit (1
A fifth switch (26) controlled by the control signal (S, ) from 3) is arranged on the power supply line of the transmission system circuit,
A sixth switch is controlled by a control signal (S, ) from a control circuit (13), and (27) is an operation detection section that detects an operation of a call button or the like.

FIG. 3 is a diagram showing an embodiment of the handset in the wireless telephone device of the present invention. Since it basically has the same configuration as FIG. omitted.

However, compared to Fig. 2, the second to fourth switches (20)
(22) and (23) are deleted, and data memory (13) is deleted.
The difference is that C') stores its own handset number and that the first switch (19') has a data terminal and an audio terminal.

FIG. 4 is a block diagram functionally showing the control circuit (13) of the base unit. In FIG. 4, (28) is a control unit, (
29) is a memory unit that stores the handset number of each handset, and corresponds to a predetermined area of the data memory (13c).

(30) is an address counter that specifies the address range of the memory unit (29) based on the control signal (S,) from the control unit (28); (29) is a data detection unit that detects various data based on the handset number from the digital data, and (32) is a signal from the data detection unit (31) (this is based on the handset number included in the digital data and the data from the memory unit). A flag register that stores (output when the handset numbers match), (
33) is a counter that counts the clock (CLK) signal from the control unit (28), and determines the time width for detecting data sent from each child device. In addition, the counter (3
3) is a carry or borrow (C/B) every time a predetermined number is counted.
) signal and returns to the initial value. (34) is a counter that counts carry or borrow signals from the counter (33). Note that the carry or borrow signal is also supplied to an address counter (30), and the address counter (30) is configured to increment in accordance with the carry or borrow signal.

(35) is a setting section in which a value N corresponding to the number of slave devices to be called is set. (36) is a matching circuit that determines whether the counting coefficient value of the counter (34) matches the value set in the setting section (35), and the matching signal (S) is used as a reset signal for the counters (33), (34) and The signal is supplied to the address counter (30) and also to the control section (28). (37) is a timer that measures time T, and (38) is a counter that maintains the number of handsets that are valid for calling.

FIG. 5 is a block diagram functionally showing the control circuit (13') of the slave unit. In FIG. 5, <39) is a control section;
(40) is a memory unit that stores the own handset number, and corresponds to a predetermined area of the data memory (1, 3C').

(41) is a data detection section that detects various data based on the digital data from the modem (12') and the handset number from the memo section (40).

Next, the main part flowchart of the main unit shown in FIG.
The operation will be explained with reference to the main part flowchart of the slave device shown in the figure and the schematic operation waveform diagram shown in FIG.

When the base unit (1) is powered on, it first determines whether there is an incoming call via the telephone line, and if there is no incoming call,
Next, it is determined whether there is an extension call request (S-1
,2). If there is no incoming call or extension call request, the above procedure is repeated.

On the other hand, when an incoming call signal arrives via the telephone line, it is detected by a ringer detection circuit (not shown) provided in the base unit, and the ringer detection circuit sends the detection signal to the control circuit (13).
supply to. The control circuit (13) determines that there is an incoming call based on the detection signal, and sends the call data including the handset number of each handset at time 0. ) to all slave units or a specific number of slave units (S-1, 3).

Specifically, it is performed as follows. The control circuit (1
3) outputs a control signal (S6) to switch the sixth switch (26
) to close 1. After supplying power to the transmission system circuit and outputting a control signal (S,) to change the first switch (19) to the data terminal side, the call data is transferred to the modem (1).
2). In the modem (12), the calling data (digital signal) is MSK-modulated into an analog signal format, and then sent to the modulation circuit (
14>. In the modulation circuit (14), the modem (1
The output signal from 2) modulates the oscillation signal from the transmission PLL section (15) (which becomes a transmission carrier signal). The signal modulated in this way is then sent to a transmission amplifier circuit (1
6) After being amplified to a predetermined transmission level in (17), it is sent out from the transmission antenna (5).

After exiting the calling data, the control circuit (13) supplies a control signal (S, ) to the address counter (30) to designate the change range of the address counter (30) and also sets the value N corresponding to the number of handsets to be called. (In the case of the embodiment, 3) is set in the setting section (35). At the same time, the timer (37) is operated and a tarok signal is supplied to the counter (33).

On the other hand, if the handset is powered on, the control circuit (13
The control signal (Sl) from the fifth switch (25')
) is configured to close intermittently, so that the fifth
When the switch (25') is closed, the receiving antenna (5')
When the calling data is received at the receiving high frequency amplifier circuit (6'), the received signal is amplified by the receiving high frequency amplifying circuit (6') and then sent to the mixing circuit (8').
After being mixed with the oscillation signal from the reception PLL section (7') and converted into an intermediate frequency signal, the intermediate frequency amplifier circuit (9'
), and then detected by a detection circuit (10'). The signal detected in this way is converted into a digital signal in the modem (12') and then sent to the control 9++ circuit (13').
supplied to

The control circuit (] 3') determines whether or not it is calling itself based on its own handset number stored in the memory section (40) and the data signal from the modem (12') 21-1. If so, the response timing is set based on, for example, the number of called handsets and the sending order included in the calling data (S-100, 101). Then, when the set response timing is reached, the control circuit (13'
) outputs a control signal (Sl) to switch the sixth switch (26'
), supply power to the transmission system circuit, output the control signal (S,'), and switch the first switch (19') to the data terminal side, and then transmit the response data including the handset number. to the modem (12'). In the modem (12'),
After the response data (digital signal) is MSK modulated into an analog signal format, it is sent to the modulation circuit (14') via the first switch (19'). Modulation circuit (14
) modulates the oscillation signal from the transmission PLL section (15') with the output signal from the modem (12'). The signal modulated in this way is then sent to a transmission amplifier circuit (16'
) (17') to a predetermined transmission level, and then transmitted from the transmission antenna (18'').

By the way, as described above, after leaving the call data, the base unit (1) specifies the change range of the address counter (30), sets the set value N, and starts supplying the clock signal. In addition, in the initial state, the address counter (3
0) is set as the address for the child device with the first priority, and the value of the counter (34) is set to "0".

The counter (33) counts the clock signals, and when the counted value reaches a value corresponding to time T, it outputs a carry or borrow signal, and then the initial value is set. The carry or borrow signal is supplied to the address counter (30) and its contents are incremented by 1.
The address for the child device with the second highest priority is set and also supplied to the counter (34), which increments the count by one.

Thus, the control unit (28) reads data from the memory unit (29) in the detection time width NT for detecting data from the slave unit determined by the N value set in the setting unit (35). A match is detected between the received handset number and the handset number included in the data from the modem (12), and if they match, it is determined that there is response data (S-6).

At this time, the control unit (28) sets "response flag 1" in the response flag register (32) specified by the value of the counter (34).Detection of such response data is performed when the content of the counter (34) is "1". This will continue until it reaches 3” (S
-7,8,9).

This operation will be explained in more detail based on the system shown in FIG. Note that the priorities are assigned in the order of handset 1, handset 2, and handset 3, and the handset numbers are X, Y, and Z.

The base unit that has transmitted the call data at time tl shown in FIG. 8 sets the address counter (30) to the address corresponding to the slave unit 1 and sets "3" in the setting section (35).

Then, the counter (33) is counting and the counter (33) is counting.
When the value of 4) is rQJ, when data including the handset number Set the response flag 1". In this state, the counter (3
3) reaches the count value corresponding to time T, the address counter (30) is set to the address value corresponding to the handset 2, and the value of the counter (34) becomes "1". Then, when data including the handset number Y is detected at time, a response flag 1'' is set in the response flag register (32) corresponding to the handset having the second priority.

The following operations operate in the same manner, but in the example of FIG. 8, no response data from handset 3 is detected, so the content of the response flag register becomes rl 10J, and the control unit (28) sends the call data only to handset 3 again. Send.

However, since only the handset 3 requires retransmission, the address counter (30) is set to the address value corresponding to the handset 3, and the setting section (35) is set to "1".

Such retransmission continues until response data from handset 3 is detected or timer (37) measures time T (5-10.11.1.2.13).

Then, when all the response flags become 1 or when time T has elapsed, the base device sends data including the handset number and ringing signal of each handset to the handsets whose response flags are “1” (
S-14).

On the other hand, the handset is in a reception standby state after leaving the response data in S-102, and when it receives data including its own handset number and a calling signal (S-103), the handset
A ringer signal is supplied to a circuit (not shown) to notify a ringer (ringer sound is generated). Next, it is detected based on the signal from the operation detection section (27) whether or not there has been an operation of the call switch, etc., and if there is no operation, response data is sent out in the same way as the above-mentioned call data reception samurai (S-106,
107).

On the other hand, if the call button or the like is operated, data including the own handset number and operation signal is sent (S-108).

Even after sending out the ringing signal, the base unit detects operation signals or response data from the slave unit at a time interval corresponding to the number of slave units called, in the same way as when detecting response data from the slave unit described above. (S-1,5).

When the operation signal is received, the response flag is "11".
is set in the flag register (32). Next, the number of response flags "11" included in the flag register (32) is detected, and it is determined whether there is a plurality of slave units that have sent the operation signal (S-16). As a result, if there are multiple handsets that have sent the operation signal, the handset to be called is determined based on the priority stored in the data memory (13C), and then the handset number and operation response signal of the handset are included. After sending the data to the handset, it is set to a talking state (S-17, 1
8,19).

On the other hand, after transmitting the operation signal, the handset determines whether an operation response signal has been received, and if the operation response signal is received and the handset number matches its own handset number, the handset is set to a talking state. (S-109, 110, 111). Note that the handset whose handset numbers do not match ends the call and returns to the initial state. Furthermore, if the slave unit receives an operation response signal from the base unit before receiving the call signal from the base unit, it immediately ends the call processing operation and returns to the initial state (S-'10
3.104.105).

When the base unit cannot receive the operation signal from the slave unit, it determines whether or not all response data has been received based on the response flag set in the flag register (32).
If all are received, the call signal is sent again (S
-20). On the other hand, if the response data could not be received, the count value of a counter (not shown) corresponding to the slave device that could not receive the response data is incremented by one. When the count value reaches a predetermined value, the calling operation of the slave device is stopped [F.

and set the value of the counter (38) that stores the number of called handsets to 1.
Count down. When the value of the counter (38) reaches rQJ, the calling operation ends and returns to the initial state (5-
21.22.23.24).

When response data is detected, the counter that counts the number of unresponsive times of the handset is reset to "r□", and at this time, the value of the counter (38) is also returned to its initial state.

By the way, in the embodiment described above, the calling data is first sent, and a ringing signal is sent to the handset that responds to the call to drive the ringer circuit of the handset. The ringing signal may be included in the call data from the beginning. Further, in order to facilitate understanding of the present invention, the explanation has been made using a block diagram, but it is also possible to provide a live commentary using software processing by the microcomputer 1-1. Furthermore, although transmission and reception may be distantly related using one antenna, in that case, a separate transmission and reception filter is required.

In the embodiments described above, the operation was explained in the case where all devices to be called emit ringer tones.

However, when using a handset installed in a room where a sick person is present, there may be cases where it is desirable to be able to make a call by listening to the ringer of another device and operating the call without making the ringer sound when calling an extension. The present invention is configured to meet such demands.

Here, FIG. 9 shows the calling data format of the base unit and the calling data format of the slave unit.

In FIG. 9(a), the ringing classification data (50) is provided for 4 bits. The first bit is for the base unit,
2 bits "l" are used for handset 1, the 3rd bit for handset 2, and the 4th bit for handset 3.

For example, if you want to ring and call only handset 1 specified from the base unit, the ring classification data is I-oxoo.Same as 1, the base unit will ring only handset 2, and the base unit will ring only handset 3. The ringing classification data when calling is r00F, OJ,
and rO(10)J1), the ringing classification data when calling by ringing all handsets is rollJ.

Further, the call classification data is data specifying which device is to be called, and is provided for 4 bits. Among them, the first bit is used for the master machine L, the second bit is used for the slave machine 1, the third bit is used for the slave machine 2, and the fourth bit is used for the slave machine 3.

For example, when specifying and calling only handset 1 from the base unit, the call classification data is rQlooJ, and similarly from the base unit to handset 2 only 2. When only the handset 3 is designated and called from the parent device, the data is rO010J and "0001", respectively, and when all the handsets are called, the call data is ro 111J.

The 3-bit preliminary data is data for identifying each device, and the data "ro o o" is sent from the parent device to the child device. The 8-bit control data includes data such as a ringing signal, a ringing stop signal, a ringing stop response signal, an operation signal, an operation response signal, a call signal, a call response signal, and a calling operation signal.

FIG. 9(b) shows the data format of the handset, in which the 3-bit part is provided with the handset number. That is, rl OoJ for handset 1, "010" for handset 2, and r for handset 3.
oolJ is used.

(50') is the ringing classification data, which has 4 bits like the format of the base unit, the 1st bit is for the base unit, the 2nd bit is for slave unit I, the 3rd bit is for slave unit 2, and the 4th bit is for slave unit 2. is used for slave unit 3.

Since the call data is configured in this way, the device specified by the ring classification data can be ringed and called in conjunction with the calling operation on the calling side, such as when transferring an outside line. At this time, if there is no one near the device that is ringing, even if the device is not specified to ring, if the device is specified by the call classification data, it will be set to a talking state by performing a call operation.

Next, the operation when the ringing classification data is included in the call data will be explained using the flowcharts of FIGS. 10 and 11.

First, the operation on the base unit side will be explained using FIG. 10. If the base unit is powered on, it will determine whether there is an incoming call via the telephone line (Sm2O3), and if there is no incoming call, it will determine whether or not the base unit has performed an operation to call the slave unit. Judgmentally S
-201), when this call operation is performed, call data including ringing classification data is transmitted from the base unit (S-2
02). Next, it is determined whether there is response data from the slave device (S-203). If the base unit does not perform a calling operation, it is determined whether or not the base unit has received the call data from the slave unit (S-204). If the base unit has received the call data, the ring classification data indicates that the base unit is It is determined whether or not it is included (S-205), and if it is included, the base unit starts ringing (S-205).
S-206). Next, it is determined whether or not only the base unit is called in the call classification data (S-207). If the call is only for the base unit, the process proceeds to step S-202; if the call is for only the base unit, the call response data is (S-208
), the process proceeds to step S-209.

In the next step, it is determined whether the base unit is in a calling operation (pressing the call button) (S-209), whether or not a call operation signal has been received (S-210), and the base unit itself It is determined whether or not the sound is specified (S-211).

If the base unit itself is designated to ring, the base unit starts ringing (S-212) and sends a ringing signal to the slave unit (S-212).
213).

If the calling operation in progress signal is not received in step S-210, it is determined whether the calling operation is stopped (S-210).
-214). If the calling operation is stopped (that is, the pressing of the calling button is released), it is determined whether the base unit is designated to ring (S-215). If the parent unit is designated to ring, the unit stops the ringing (S-216) and sends a ringing stop signal to the slave unit (S-217).

If the calling operation is not stopped in step S-214,
It is determined whether a calling operation stopping signal has been received from the handset (S-218). If the call operation stop signal is received, the process advances to S-215, and if the call operation stop signal is not received, the step of determining whether or not the call operation has been performed on the base unit (S-215) is performed.
Proceed to 219). If a call operation is performed on the base unit (the handset is lifted), the base unit must transmit a call signal to the handset (S-220) and determine whether or not it has received a call response signal from the handset. S-221) If a call response signal is received, the base unit is set to a call state.

If the base unit does not perform a call operation in step S-219, it is determined whether a call signal from the slave unit due to the call operation has been received by the slave unit (S-222). When a call signal from the handset is received, a call response signal is transmitted to the handset (S-223), and the handset that performed the call operation is set to a talking state.

Next, the operation on the handset side will be explained using FIG. 11.

If the slave unit is powered on, the slave unit must determine whether or not an operation has been performed to call the base unit or another slave unit.
301), when this calling operation is performed, the calling data is transmitted from the slave device (S-302). Next, determine whether response data has been received from the base unit or other slave units.
-303), upon receiving the response data, it is determined whether or not only the base unit is being called (S-304). If you do not call only the base unit, but also call other slave units, the call data is sent from the base unit to the slave unit again, so it is difficult to determine whether or not the call data from the base unit has been received. -305),
When this call data is received, call response data is transmitted to the base unit in the time-sharing manner described above (S-306). If the calling operation is not performed in step S-301, it is determined whether or not calling data has been received (S-307), and if calling data has been received, calling response data is transmitted in a time-sharing manner (S-308). The ringing data includes ringing classification data in order to ring only the specified device, such as when transferring to a specific handset or base unit, and the called side can specify ringing using this ringing classification data. It will ring or stop ringing only when the That is, step (S-30
If the ringing signal is received in step 9), it is determined whether ringing is specified in the ringing category data (S-310).

If ringing is specified, the ringing will start (S-311), and whether or not the ringing operation is in progress while the ringing or ringing is stopped (S-312), and whether the ringing operation is stopped (S-312).
313), and if the calling operation is in progress, a calling operation in progress signal is transmitted in a time-sharing manner. If the calling operation is stopped, a calling operation in progress signal is transmitted in a time-sharing manner (S-314).
S-327).

If a ringing signal is not received in step (S-309), it is determined whether or not a ringing stop signal has been received.
315), when a ringing stop signal is received, it should be determined whether or not ringing is specified in the ringing classification data.S-316
), if the ringing is specified, stop the ringing S-317)
, proceed to step (S-312). Step (S-31
If the ringing is not specified in 0) and (S-316), the ringing or ringing stop operation will not be performed, and the ringing response signal or ringing stop response signal will be sent to the base unit in a time-sharing manner (
S-318).

More specifically, steps S-309 to S-3]8
In this case, the ringing or ringing stop is controlled in conjunction with the operation of the calling party. In other words, if the calling party is the base unit, data including a ringing signal is sent from the base unit in conjunction with the operation of the base unit, and the slave unit sends a ringing response signal to the parent unit in a time-sharing manner according to the number of handsets and the handset number. sent back to the aircraft.

On the other hand, if the calling side is a slave unit, and data corresponding to the operation of the slave unit is transmitted to the base unit in a time-sharing manner, the calling data is transmitted from the base unit to the slave unit with a -period delay. Therefore, if it is included in the ringing specification on the called side, it will ring in conjunction with the calling operation on the calling side. In this way, a predetermined device is controlled to ring or stop ringing in conjunction with the operation of the calling party.

When the ringing stop signal is not received in step (S-315), it is determined whether the handset itself has made a call or not.
319), if the handset itself makes a call, it is determined whether or not a call response signal has been received (S-320). If a call response signal is received here, the call state is terminated because the call operation is for another handset. If the calling handset does not receive a call response signal in step (S-320) and receives a call signal due to the call operation of the base unit (S-321
), transmitting the response signal in time division (S-322),
Go to call state.

In step (S-323), it is determined whether or not a call operation has been performed on the called side. When a call operation is performed on an incoming call, the call signal is transmitted in a time-sharing manner regardless of the presence or absence of ringing (S-324), and after waiting for the response signal to be received (S-325), the call state is entered. . However, if the called handset receives a call response signal without making a call operation (S-326), the calling state is terminated because the call operation is by another handset.

As above, 0 calls! In conjunction with the ringing operation, the device specified by the ringing category data can be ringed and called. At this time, even if the device is not ringing, by performing a call operation, the device becomes in a call state.

Note that the above operation can be realized by software processing of a microcomputer.

Here, as a more specific example, an explanation will be given of the operation when the base unit transfers the call to the slave unit while the base unit is talking to an outside line.

In this case, the operation is a. The base unit notifies the other party of the call that the call will be transferred.

1], press the extension call button (60) on the base unit (1).

C9 Dial button corresponding to the handset you want to ring and call (For example, ■ dial button for handset 1, ■ dial button for handset 2, ■ dial button for handset 3, O button for all handsets) Press.

When the above operation is performed, the call data is sent from the base unit to the slave unit in the above-described operation.

Therefore, for example, if the extension call button (60) of the base unit (1) and the dial button (■) are pressed, the slave unit 1 rings while the dial button (■) is pressed.

When the user recognizes that the handset 1 is ringing, raises the handset of the handset 1, and presses the call button (61) of the handset 1, the child @1 can talk to the other party on the outside line.

At this time, even if there is no one near Handset 1 and there is another Handset 2 or Handset 3 that is not ringing, if Handset 2 or Handset 3 is designated to call in the call classification data, the handset When the handset 2 or 3 is raised and the call button (61) is pressed, handset 2 or handset 3 can talk to the other party on the outside line.

Next, an explanation will be given of the operation when, for example, the handset 1 is talking to an outside line and transfers the call to another handset 2.

In this case, the operations are as follows: a. From handset 1, notify the other party that the call will be transferred.

b. Press the extension call button (62) on handset l.

Press the ■ dial button corresponding to C1 handset 2.

When the above operation is performed, the data for calling the handset 2 is sent from the handset 1 to the base unit, and the base unit that receives this data sends a call including the ringing classification data for ringing the handset 2. Send data.

In this way, while the dial button (■) is pressed on handset 1, handset 2 rings.

When you release your hand from the ■ dial button on the handset L, data indicating that the suppression of the ■ dial button has been released is sent from the handset 1 to the base unit, and the base unit sends a sound to the handset 2. Data for stopping (ringing stop signal) is sent.

During this time, when the user recognizes that the handset 2 is ringing, raises the handset of the handset 2, and presses the call button (61) on the handset 2, the handset 2 can talk to the other party on the outside line.

At this time, if there is no one near handset 2 and the handset of handset 3, which is not ringing, is picked up, if handset 3 is designated to call in the call classification data, the call on handset 3 will be terminated. When the button is pressed, handset 3 can talk to the other party on the outside line.

Similarly, if the base unit or handset operates to hold a call with an outside line,
On-hold music sounds on the specified handset or base unit. At this time, if a call operation is performed on a device that is playing a hold tone, or a device that is not playing a hold tone but is designated to be called by the call classification data, it will be in a conversation state with an outside line.

In the example shown in FIG. 9, the ringing classification data is provided in the data formats of the base unit and slave unit, but the ringing classification data may be provided only in the data format of the base unit.

(G) Effects of the Invention According to the present invention, when a call is made from a base unit, the base unit sets the detection time width according to the number of slave units to be called after sending data for the call, and the slave unit sets the detection time width according to the number of slave units to be called. Since responses are made in a time-sharing manner according to the calling data and the self-identification signal, data from the handset can be reliably detected.

Further, in conjunction with the calling operation on the calling side, the device specified by the ringing classification data can be ringed and called. At this time, even if a device is not ringing, if it is designated to be called by the call classification data, it is set to a talking state by performing a talking operation.

Therefore, the present invention is extremely effective in cases where it is desired to be able to talk on a handset installed in a room where a sick person is present without using a ringer.

[Brief explanation of drawings]

Fig. 1 is a system configuration diagram of the present invention, Fig. 2 is a block diagram showing an example of the configuration of the parent unit, Fig. 3 is a block diagram showing an example of the configuration of the slave unit, and Fig. 4 is the operation of the control circuit of the parent unit. FIG. 5 is a functional block diagram used to explain the operation of the control circuit of the slave device, FIG. 6 is a flowchart of the parent device, FIG. 7 is a flowchart of the slave device, and FIG. 8
The figure is a schematic operation waveform diagram showing system operation, and Figure 9 (
(a) (b) is a diagram showing the calling data format of the base unit and the calling data format of the slave unit, respectively; It is a flowchart used for explanation of operation when sound classification data is included in the data. (1)...Main unit, (2)(3)(4)...Slave unit, (
13) (13')...control circuit, (50) (50')
...Sound classification data.

Claims (3)

[Claims] (1) It has a base unit connected to a telephone line and a plurality of handsets connected to the base unit via a wireless line, and when a call is received or an extension is called, the base unit connects to the handsets. The time width for transmitting data including the identification signal of each handset and detecting the data sent from the handsets is set according to the number of handsets to be called. A radiotelephone device configured to transmit data in response to data in a time-sharing manner based on data from the base unit, wherein the base unit or any of the slave units causes a designated slave unit or base unit to ring. When a calling operation is performed to make a call, the base unit or slave unit that performed the calling operation transmits data including ringing classification data for making a ring tone sound to the specified slave unit or base unit. A wireless telephone device characterized in that: (2) The wireless telephone device according to claim 1, wherein the specified handset or base unit is configured to shift to a talking state by a call operation when a ring tone sounds. (3) When the designated handset or base unit is ringing, the handset or base unit that has not been designated to ring and is not ringing is also configured to shift to a talking state by a call operation. The radiotelephone device according to claim 1, characterized in that: