JPH0637709A - Cordless telephone set with paging function - Google Patents

Abstract

PURPOSE:To provide a small sized and low power consumption cordless telephone set with a paging function in which the paging operation is available without the need of independent provision of a circuit or the like required for the paging. CONSTITUTION:This cordless telephone set provided with a master set 1 connecting to a telephone line and a slave set 2 connecting to the master set 1 via a radio channel receives a preset paging mode identification signal 54 in plural bits sent from the master set 1 or the slave set 2 via the radio channel and executes the processing in the paging mode when a prescribed number of bits or over in the received preset paging mode identification signal 54 are coincident with reference bits.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cordless telephone, and more particularly to a cordless telephone with a paging function which can be made compact, low cost and low power consumption.

[0002]

2. Description of the Related Art Conventionally, as an apparatus of this type, there is one disclosed in, for example, JP-A-63-92132.

FIG. 10 is a block diagram showing the configuration of the cordless telephone disclosed in the above document.

This cordless telephone with paging function comprises a master unit 1 and a slave unit 2 connected via a wireless line, and a telephone line 3 is connected to the master unit 1. further,
In this example, a pager 4 is provided on the slave side for notification by means of an alarm sound or blinking of light. A pager transmitter 6 is connected to the control circuit 5 of the master unit 1, and a pager transmitter antenna 7 is attached to the pager transmitter 6.

In this device, when a call signal is transmitted from the telephone line 3 at the time of an incoming call, the control shown in the flowcharts of FIGS. 11 and 12 is performed. First, the base unit 1 supplies a call signal to a call signal detection circuit (not shown) via the hybrid circuit 8, the call signal detection circuit detects the call signal, and gives a detection output to the control circuit 5. The control circuit 5 determines that there is an incoming call by receiving this detection output (step 101), and sets the synthesizer 9 to the frequency of the control channel. Further, the control circuit 5 outputs an incoming signal including an ID signal (calling signal) to the transmitting circuit 10 to indicate a vacant speech channel, and the transmitting circuit 10 set to the control channel transmits the incoming signal to the transmitting antenna 11 (Step 102). On the other hand, in the handset 2, the synthesizer 12 is set to the frequency of the control channel, and because of the battery saving, the synthesizer 12 and the receiving circuit 13 are turned on for a fixed time (step 201), and then turned off for a fixed time. (Step 202) is repeated. When receiving circuit 13 receives the incoming signal through receiving antenna 14 when turned on (step 203), receiving circuit 13 gives the incoming signal to identification signal detecting circuit 15 and received electric field detecting circuit 16.

When the identification signal detection circuit 15 confirms the ID signal included in the incoming signal and the reception electric field detection circuit 16 detects that there is a reception electric field, the control circuit 17 causes the transmission circuit 18 to operate. Is turned on (step 204). The control circuit 17 gives an incoming call response signal including the ID signal to the transmitting circuit 18, and causes the transmitting circuit 18 to transmit the incoming call response signal via the transmitting antenna 19 (step 205).

After that, the control circuit 17 causes the synthesizer 1 to
2 is switched from the control channel to the frequency of the call channel (step 206). Receiver circuit 20 in base unit 1
When the incoming call response signal is received via the receiving antenna 21, the incoming call response signal is given to the identification signal detection circuit 22 and the received electric field detection circuit 23. Then, when the reception electric field detection circuit 23 detects the reception electric field (step 103), the control circuit 5 stops the transmission of the incoming signal (step 104).

If the received electric field is not detected in step 103, the control circuit 5 repeatedly transmits the incoming signal, and when the number of repetitions reaches n (step 105), the control channel becomes useless. The transmission of the incoming signal is stopped so that it is not used. Furthermore, if the ringing signal is still transmitted at this time (step 106), the surround sounder (not shown) of base unit 1 is rung (step 107).

On the other hand, when the identification signal detection circuit 22 does not confirm the ID signal included in the incoming signal, the control circuit 5 waits until the call signal is not transmitted from the telephone line 3 (step 110). Next, the control circuit 5
Gives a signal indicating the ringing of the bell to the transmission circuit 10, and transmits this signal from the transmission circuit 10 set to the communication channel via the transmission antenna 11 (step 111).

The receiving circuit 13 in the handset 2 receives this signal via the receiving antenna 14 (step 20).
7) The signal indicating the ringing of the bell is given to the control circuit 17. When this signal is input, the control circuit 17 causes the surround 24 to ring (step 208). At that time, the control circuit 17 determines whether or not a hook switch (not shown) is turned from off to on (step 209), and if it is on, a signal indicating off hook is transmitted from the transmission circuit 18 via the transmission antenna 19. (Step 210).

After that, the handset 2 enters a call state (step 211), and a call can be made using the receiver 25 and the transmitter 26. In addition, the receiving circuit 20 in the base unit 1 receives the signal indicating the off-hook by the receiving antenna 21.
When it is received via (step 112), this signal is given to the control circuit 5. When this signal is input, the control circuit 5 stops the transmission of the signal indicating the ringing of the bell (step 133). Then, the base unit 1 also enters the call state (step 114).

In addition, an incoming signal is transmitted from the transmitting circuit 10 via the transmitting antenna 11 (step 10
2), a pager call signal is given to the pager transmitter 6. When the pager calling signal is input, the pager transmitter 6 transmits the pager calling signal via the pager transmitter antenna 7 through a preset pager channel (step 121).

On the other hand, as shown in FIG. 12, in the pager 4, the receiving circuit 27 is turned on for a certain period of time (step 301) and then turned off for a certain period of time (step 32) because of battery saving. There is. The receiving circuit 27 is preset to the pager channel and receives the pager calling signal when it is turned on.
When it is received via 8 (step 303), this pager call signal is given to the control circuit 29.

When the pager calling signal is input, the control circuit 29 gives a voice signal for notification to the surround sounder 30 to cause the surround sounder 30 to ring and blink the light emitting diode 31. Therefore, the pager 4 notifies the call from the base unit 1 (step 304). At this time, in the handset 2, when an incoming call is sensed and off-hooked from the notification by the pager 4 or the ringer 24 of the handset 2 (step 209), a signal indicating off-hook is transmitted (step 210).

When the master unit 1 receives this signal, the control circuit 5 stops the transmission of the signal indicating the ringing of the bell (step 112) and the transmission of the pager calling signal (step 113). At this time, the pager 4 does not receive the pager call signal (step 305) and stops the notification indicating the call from the master unit 1 (step 30).
6). Also, when an extension call is made between the master unit 1 and the slave unit 2, the connection is performed in the same procedure.

[0016]

However, in the cordless telephone having the above-mentioned structure, the circuit necessary for the pager must be independently provided, and the scale of the device becomes large, and a channel for the pager is separately provided. There were problems such as having to do it.

In view of the above conventional problems, it is an object of the present invention to provide a compact cordless telephone with a paging function that can perform a paging operation without separately having a circuit or the like required for paging.

[0018]

In order to achieve the above object, according to the invention of claim 1, a master unit connected to a telephone line and a slave unit connected to the master unit via a wireless line. In a cordless telephone equipped with, a receiving means for receiving a paging mode identification signal consisting of a predetermined number of bits transmitted from the master or slave via a wireless line, and the paging mode identification signal received by the receiving means. Paging mode identifying means for identifying the paging mode when a predetermined number of bits or more of the bits match the bits of a predetermined code.

According to another aspect of the invention, in a cordless telephone having a master unit connected to a telephone line and a slave unit connected to the master unit via a wireless line, the master unit or the slave unit is used. Receiving means for receiving a paging mode identification signal consisting of a predetermined number of bits transmitted via a wireless line, and a predetermined number of bits or more of the paging mode identification signal received by this reception signal coincides with a predetermined code bit. In this case, when the paging mode identifying means for identifying the paging mode and the paging mode identifying means identify the paging mode, paging including at least a paging signal and a message signal transmitted a plurality of times. The paging mode information signal is confirmed by receiving the mode information signal and performing a predetermined majority decision processing. And signal determination means, is provided with a paging mode executing means for executing the process in the paging mode based on the paging mode information signal determined by the signal determination means.

According to another aspect of the invention, in a cordless telephone having a master unit connected to a telephone line and a slave unit connected to the master unit via a wireless line, the master unit or the slave unit is used. When receiving means for receiving a paging mode identification signal consisting of a predetermined number of bits transmitted via a wireless line, and when a predetermined number of bits or more of the paging mode identification signal received by the receiving means coincides with a predetermined code bit In the case where the paging mode identifying means for identifying the paging mode and the paging mode identifying means identify the paging mode, at least the paging signal, the message signal and the message signal transmitted a plurality of times. Information that identifies the number of the paging mode information signal including the number identification signal is received, and a predetermined majority decision is made. And a paging mode executing unit for executing a process in a paging mode based on the paging mode information signal fixed by the signal fixing unit. is there.

According to another aspect of the invention, in a cordless telephone including a master unit connected to a telephone line and a slave unit connected to the master unit via a wireless line, the master unit or the slave unit is used. Receiving means for receiving a paging mode identification signal consisting of a predetermined number of bits transmitted via a wireless line, and a predetermined number of bits or more of the paging mode identification signal received by the receiving means coincides with a predetermined code bit. In this case, a paging mode executing means for executing a paging mode process at every preset time is provided.

[0022]

With the above construction, according to the invention of claim 1, the receiving means executes the paging mode by receiving the paging mode identification signal, so that the pager function is provided on the same frequency as the communication channel or the control channel. It can be implemented and does not require new hardware for pager functionality. The paging mode executing means executes the paging mode when a certain number of bits or more of the received paging mode identification signal match,
Reception under a weaker electric field becomes possible.

According to the second aspect of the present invention, the signal determining means receives the paging mode information signal transmitted a plurality of times in the paging mode and performs a predetermined majority decision processing to determine the paging mode information signal. Therefore, it becomes possible to receive under a weaker electric field.

According to the third aspect of the invention, since the information number identification signal for identifying the number of the message signal is added to the paging mode information signal, the receiving side does not receive the same information again after confirming the reception and is activated. .

According to the invention as set forth in claim 4, time adjustment is performed in advance between the master unit and the slave unit, and the paging mode is executed at each time set at that time, so that the intermittent reception interval can be set long. .

[0026]

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 is a diagram showing a signal transmission format transmitted in a paging mode in a cordless telephone with a paging function according to a first embodiment of the present invention, and FIG. 2 is a diagram showing details of a paging mode information signal in FIG. Is.

In FIG. 1, the signal format transmitted in the paging mode in this embodiment is a synchronization signal 51 and a calling signal 52, followed by a paging mode synchronization signal 53. The paging mode synchronization signal 53 is a signal for establishing synchronization on the receiving side and is, for example, 0101 ... 01.
And so on. This paging mode sync signal 5
The paging mode identification signal 54 following 3 is a signal having a specific pattern of a plurality of bits (for example, 64 bits) and is used to set the paging mode.
The reception side confirms the reception of this signal when a certain number or more (48 bits, for example) of these signals match. Furthermore, the paging mode information signal 55 is transmitted subsequent to the paging mode identification signal 54.

In FIG. 2, the paging mode information signal 55 is composed of a calling signal 61, a handset identification signal 62, an information number identification signal 63 and an information signal (message signal) 64. The call signal 61 has the same content as the call signal 52 in FIG. 1, and is a signal for confirming that the slave unit 2 is a signal from the master unit 1. The slave unit identification signal 62 is a signal for distinguishing whether the master unit 1 calls a specific slave unit or all slave units when there are a plurality of slave units. For example, when there are four slave units, It consists of a 4-bit signal. The information number identification signal 63 determines whether or not the message received on the receiving side is the same as the one already confirmed. If the same information number identification signal 63 is received within a certain time, the information number identification signal 63 is notified again. No need. For example, a signal of about 4 bits is incremented for each transmission. The information signal 64 is a signal indicating the content of the message to be transmitted. For example, if it is pre-allocated as shown in FIG. 3, the transmitting side sends the number corresponding to the message, and the receiving side receives the message, the corresponding message Can be displayed.

FIG. 4 is a block diagram showing the configuration of a cordless telephone with a paging function according to this embodiment, and in order to simplify the explanation, the same elements as those in FIG. 10 are designated by the same reference numerals. In addition, reference numerals 41 and 42 in the figure denote detection circuits for the respective signals, and reference numeral 43 denotes a display portion for messages and the like. Further, FIG. 5 is a flowchart showing the operation of the cordless telephone with a paging function of this embodiment having a paging function.

In FIG. 4, the cordless telephone with paging function performs the control shown in the flow chart of FIG. 5 when a call signal is transmitted from the telephone line 3 when receiving a call. First, as in the conventional case, the base unit 1 supplies a calling signal to the calling signal detection circuit (not shown) through the hybrid circuit 8, the calling signal detection circuit detects the calling signal, and the detection output is sent to the control circuit 5. give. Then, the control circuit 5 outputs an incoming signal including an ID signal (call signal) to the transmitting circuit 10 to indicate a vacant speech channel, and the incoming signal is transmitted from the transmitting circuit 10 set to the control channel to the transmitting antenna 11. (Step 10)
2).

On the other hand, in the slave unit 2, the synthesizer 12 is set to the frequency of the control channel, and because of the battery saving, the synthesizer 12 and the receiving circuit 1
3 is turned on for a certain period of time (step 201) and then turned off for a certain period of time (step 202). When the receiving circuit 13 is turned on and receives the incoming signal via the receiving antenna 14 (step 203),
The incoming signal is supplied to the detection circuit 42.

When the ID signal included in the incoming signal is confirmed and the presence of the received electric field is detected, the control circuit 17 turns on the transmission circuit 18 (step 204). The control circuit 17 sends an ID to this transmission circuit 18.
An incoming call response signal including a signal is given, and the incoming call response signal is transmitted from the transmission circuit 18 via the transmitting antenna 19 (step 205).

After that, the control circuit 17 controls the synthesizer 1
2 is switched from the control channel to the frequency of the call channel (step 206). Receiver circuit 20 in base unit 1
When receiving the incoming call response signal via the reception antenna 21, the incoming call response signal is given to the detection circuit 41. Then, when the reception electric field is detected (step 103), the control circuit 5 stops the transmission of the incoming signal (step 1).
04). If the received electric field is not detected in step 103, the control circuit 5 repeatedly transmits the incoming signal, and when the number of repetitions reaches n (step 105), the control channel is not used unnecessarily. Therefore, the transmission of the incoming signal is stopped.

After the transmission of this incoming signal is stopped, FIG.
A series of paging signals shown in is transmitted. First, after transmitting the sync signal 51 and the ringing signal 52 defined by the transmission of the control channel, the paging mode sync signal 5 is transmitted.
3, the paging mode identification signal 54 and the paging mode information signal 55 are transmitted. The paging mode information signal 55 is repeatedly transmitted a plurality of times (N times).

In the handset 2, it is judged whether the incoming signal is received (step 203) and at the same time, it is judged whether the paging mode identification signal 54 is received (step 23).
1) is done. In this determination, it is not necessary that all bits match the bits of the predetermined code, and if a certain number or more match, it is determined that the bit has been received. When the paging mode identification signal 54 is received, the paging mode information signal 55 is received N times (steps 232 and 233). N
When the reception of the times is completed, the majority decision is made as shown in FIG. 6 (step 234). That is, in the example of FIG. 6, the data is transmitted seven times, and a majority decision is made as to which of “0” and “1” is larger. After such a majority decision, whether the calling signal 61 is the same (step 235), the handset identification signal 62 is the same (step 236), and the information number identification signal 63 is not the same as within a certain time. (Step 2
37), and if everything is good, surroundin 2
4 is sounded to notify that there is an incoming call (step 238). At this time, it can be displayed on the display 43 (step 239) or can be notified by voice from the receiver 25.

Next, a second embodiment of the present invention will be described.

In the first embodiment described above, the handset unit 2 was intermittently received at regular intervals, but in the present embodiment, the time is set in advance between the base unit 1 and the handset unit 2 and determined. By using a discontinuous reception method in which transmission or reception is performed at each time, the discontinuous reception interval is set to be longer.

FIG. 7 is a flow chart for time adjustment in this embodiment.

In FIG. 7, first, time data is transmitted from the parent device 1 to the child device 2 (step 151). When the handset 2 receives this time data (step 251),
Set your clock to this time (step 25)
2). Then, when the master device 1 confirms that the slave device 2 has been set (step 152), the time adjustment setting is completed (step 153). The cordless handset 2 is step 252.
After the time is set in (3), it is selected whether it is the intermittent reception for each time or the normal intermittent reception (step 253), and the selection result is set (steps 254, 255).

FIG. 8 shows an example in which intermittent reception is performed at each time. In this example, the transmission from the base unit 1 is every 00
Since it is performed for 2 seconds for 30 seconds and 30 seconds, the slave unit 2 is effective for battery saving because it is necessary to turn on the receiving circuit 13 only during this period.

Next, a third embodiment will be described with reference to the flowchart of FIG.

In the first embodiment, the case where an incoming call is received from the telephone line 3 has been described, but in the present embodiment, the message transmission from the base unit 1 to the handset 2, that is, paging is also performed as an extension communication. You can use the function.

In FIG. 9, first, the base unit 1 selects a message to be transmitted (step 161). Base unit 1
It is judged whether or not it is possible to transmit (step 162), and when the time becomes possible, the series of signals shown in FIG. 1 is transmitted (step 131). This signal is transmitted until the transmission is turned off (step 163) or a predetermined number of times is reached (step 164).

On the other hand, in the handset 2, it is judged whether or not it is the reception time (step 261), and when the reception time comes, the reception circuit 1
1 is turned on (step 262). The handset 2 determines whether the paging mode identification signal 54 is received (step 23).
1) If received, the paging mode information signal 55 is received (step 232). If the reception of the paging mode identification signal 54 cannot be determined even after receiving for a certain period of time, the receiving circuit 11 is turned off (step 265) and the next reception time is waited for. The paging mode information signal 55 is received N times (steps 232 and 234) and a majority decision is made (step 234). After that, the same processing as in the first embodiment is performed (steps 235, 236, 237),
Sounding of sounder 23 (step 238), information signal 64
Message corresponding to is displayed (step 23).
9).

[0046]

As described in detail above, according to the invention described in claim 1, when the receiving means for receiving the paging mode identification signal and a predetermined number of bits or more of the received paging mode identification signal match. In addition, since the paging mode identifying means for identifying the paging mode is provided, the pager function can be realized by the same hardware as that required for a call, and the size, the cost and the power consumption can be reduced. . Further, it becomes possible to receive under a weaker electric field, and the communication distance can be lengthened.

According to a second aspect of the present invention, in addition to the means of the first aspect, a paging mode information signal including at least a calling signal and a message signal is received a plurality of times in the paging mode, and the paging mode is determined by the majority decision processing. A signal fixing means for fixing the information signal is provided, and the processing in the paging mode is executed based on the fixed paging mode information signal. Therefore, in addition to the effect of the invention of claim 1, under a weak electric field. Therefore, it becomes possible to receive the signal at the terminal, and the communication distance can be lengthened.

According to the invention described in claim 3, the paging mode information signal according to claim 2 includes an information number identification signal for identifying the number of the message signal in addition to the calling signal and the message signal. In addition to the same effect as the invention according to the second aspect, there is an effect that the same information is not received and activated again after the reception side confirms the reception.

According to the fourth aspect of the invention, when the receiving means for receiving the paging mode identification signal and a predetermined number of bits of the received paging mode identification signal match or more, the paging mode is set at every preset time. Since the paging mode executing means for executing the process is provided, the same effect as that of the invention described in claim 1 can be obtained, and the interval of the intermittent reception can be set longer and the power consumption can be reduced.

[Brief description of drawings]

FIG. 1 is a diagram showing a signal transmission format transmitted in a paging mode in a cordless telephone with a paging function according to a first embodiment.

FIG. 2 is a diagram showing details of a paging mode information signal in FIG.

FIG. 3 is a diagram showing an example of allocation of information signals in FIG.

FIG. 4 is a block diagram showing a configuration of a cordless telephone with a paging function in the first embodiment.

FIG. 5 is a flowchart showing the operation of the cordless telephone with paging function of the first embodiment.

FIG. 6 is a diagram showing a majority decision processing.

FIG. 7 is a flowchart showing a time adjustment process in the second embodiment.

FIG. 8 is a diagram showing discontinuous reception in the second embodiment.

FIG. 9 is a flowchart showing the operation of the third embodiment.

FIG. 10 is a block diagram showing a configuration of a conventional cordless telephone.

FIG. 11 is a flowchart showing the operation of a conventional cordless telephone.

FIG. 12 is a flowchart showing an operation of a pager of a conventional cordless telephone.

[Explanation of symbols]

 1 Master unit 2 Slave unit 54 Paging mode identification signal 55 Paging mode information signal 61 Ringing signal 63 Information number identification signal 64 Information signal

 ─────────────────────────────────────────────────── ─── Continuation of front page (72) Inventor Eiichi Kuroda 2-14-40 Ofuna, Kamakura-shi, Kanagawa Mitsubishi Electric Corporation Life Systems Research Institute (72) Inventor Junichi Sakamoto 2--14, Ofuna, Kamakura, Kanagawa No. 40 Mitsubishi Electric Corporation Life Systems Research Institute (72) Inventor Tetsuya Tanaka 2-14-14 Ofuna, Kamakura City, Kanagawa Prefecture Mitsubishi Electric Corporation Life Systems Research Institute (72) Inventor Kenichi Shinohara 2 Ofuna, Kamakura City, Kanagawa Prefecture No. 14-40 Mitsubishi Electric Corporation Life Systems Research Institute

Claims (4)

[Claims] 1. A cordless telephone having a master unit connected to a telephone line and a slave unit connected to the master unit via a wireless line, wherein a call is made from the master unit or the slave unit via a wireless line. Receiving means for receiving a paging mode identification signal having a predetermined number of bits, and paging when a predetermined number of bits or more of the paging mode identification signal received by the receiving means matches a predetermined code bit. A cordless telephone with a paging function, comprising: a paging mode identifying means for identifying a mode. 2. A cordless telephone having a master unit connected to a telephone line and a slave unit connected to the master unit via a wireless line, wherein a call is made from the master unit or the slave unit via a wireless line. Receiving means for receiving a paging mode identification signal consisting of a predetermined number of bits, and in a paging mode when a certain number of bits or more of the paging mode identification signal received by the reception signal matches a bit of a predetermined code. When the paging mode identifying means for identifying the existence and the identification of the paging mode are made by the paging mode identifying means, the paging mode information signal including at least the paging signal and the message signal transmitted plural times is received. Signal determining means for determining the paging mode information signal by performing a predetermined majority decision processing, and Cordless telephone with the paging function is characterized by providing a paging mode executing means for executing the process in the paging mode based on the paging mode information signal determined by the signal determination means, the. 3. A cordless telephone having a master unit connected to a telephone line and a slave unit connected to the master unit via a wireless line, wherein a call is made from the master unit or the slave unit via a wireless line. A receiving means for receiving a paging mode identification signal having a predetermined number of bits, and a paging mode when a predetermined number of bits or more of the paging mode identification signal received by the receiving means match a predetermined code bit. When the paging mode identifying means for identifying that the paging mode is identified by the paging mode identifying means, information identifying at least the call signal, the message signal and the number of the message signal transmitted a plurality of times A paging mode information signal including a number identification signal is received, a predetermined majority decision processing is performed, and the page is Paging mode executing means for executing processing in a paging mode based on the paging mode information signal confirmed by the signal determining means, and paging mode executing means for determining a paging mode information signal Cordless telephone with functions. 4. A cordless telephone having a master unit connected to a telephone line and a slave unit connected to the master unit via a wireless line, wherein a call is made from the master unit or the slave unit via a wireless line. Receiving means for receiving a paging mode identification signal having a predetermined number of bits, and preset when a certain number of bits or more of the paging mode identification signal received by the receiving means matches a predetermined code bit. A cordless telephone with a paging function, comprising: a paging mode executing means for executing a paging mode process at each time.