JPH02111142A - Cordless telephone set - Google Patents

Abstract

PURPOSE:To eliminate the need for the access to a channel in addition by attaining a line wire call request from a slave equipment side through the entry of a speech key simply during the extension call between a master equipment and the slave equipment and using a channel used for the extension call for a channel to connect the master equipment and the slave equipment at the line wire calling. CONSTITUTION:An ID code specifying a control program and a cordless telephone set is stored in a program memory 3' of a slave equipment 2. A control circuit 4' controls each section based on the control program. A keyboard 5' is provided with a ten-key 6' to input a dial number, an extension key 7' to instruct an extension call, a speech key 8' to instruct the line wire call and a call end key 9' instructing the end of call. A synthesizer section 10' outputs a frequency signal corresponding to a channel number outputted from the control circuit 4'. The control circuit 4' uses a channel secured for the extension call to send a dial number or the like inputted by the ten-key from a transmission section 12' to the master equipment 1 when the call key is operated in the extension call state for the extension call.

Description

[Detailed description of the invention] (b) Industrial application field The present invention relates to cordless telephones.

(B) Prior Art Currently, cordless telephones in which a base unit and a slave unit are wirelessly connected are becoming widespread. In order to avoid interference with other sets, such cordless telephones use MCA (Multi Channel Access) when communicating between the base unit and handset.
method is adopted.

In addition, with this type of cordless phone, the handset is connected to the base phone.
Since communication is possible even from a distance of 100 m,
Cordless telephones that enable internal phone calls (intercom) between the base unit and handset are also being considered (Special Publications Publication No. 59-1983).
Publication No. 3634).

(c) Problems to be Solved by the Invention Conventionally, in a cordless telephone having such an extension call function, it has been difficult to change from an extension call state to a state in which a call is made to another telephone via a telephone line (hereinafter referred to as an outside call state). In order to do this, it is necessary to first perform an operation to end an internal line call, and then perform an operation to start an external line call, which poses a problem in that the operation becomes complicated.

Additionally, at the same time as the extension call ends, the channel that connected the base unit and handset will also be released, so if you want to make an external call from the handset, you will need to access an empty channel again, and the base unit will be disconnected. There was a problem that it took a long time to connect to a telephone line through This cordless telephone is capable of making internal calls between the base unit and the handset, and connects the base unit and the handset using the MCA method, and the handset has an extension key for instructing an internal call, and an extension key for instructing an external call. A call key for giving instructions, a numeric keypad for inputting a dial number, a means for transmitting and receiving data to and from the base unit, a means for securing a channel for such transmission and reception, and a means for transmitting and receiving data in response to the input of each of the keys. and means for controlling each means, and the control means is configured to ensure that the extension call is secured by the securing means when the call key is input when the extension key is input to make an extension call. The purpose of the present invention is to transmit dial numbers and the like input from the numeric keypad to the base unit from the transmitting/receiving means using the channel.

(e) Effect: According to such a configuration, there is no need to access an empty channel again when changing from an internal call to an outside call.

(F) Embodiment FIGS. 1 and 2 are block diagrams showing the circuit configurations of a base unit (1) and a handset (2) of a cordless telephone according to an embodiment of the present invention.

In FIG. 1, (3) is a program memory, which stores a control program and an ID code for identifying the cordless telephone.

(1) is a control circuit consisting of, for example, a microphone ecocomputer, and this circuit controls the various parts described below based on the control program described in Section 2. (5) is a keyboard, which includes a numeric keypad (6) for entering a dial number, an extension key (7) for instructing an internal call, a call key (8) for instructing an external call, and an instruction for ending the call. It is equipped with a call end key (9). (10) is a synthesizer section consisting of a PLL, and the chain section selectively outputs frequency signals respectively associated with a plurality of (n) channels. Specifically, each channel has a channel number, and outputs a frequency signal corresponding to the channel number output from the control circuit (4).

(11) is an antenna, (12) is a transmitting section, and the driving and stopping of the transmitting section are controlled under the control of the control circuit (4), and when the transmitting section is driven, input data is transmitted to the synthesizer section ( The frequency signal output from 10) is output from the antenna (11) as a carrier wave. (13) is a receiving section, and this receiving section uses the frequency signal output from the synthesizer (10) as a local oscillation frequency, and connects the antenna (11) to
Therefore, it is determined whether or not a frequency signal having the same frequency as that frequency is inputted, and the result is outputted to the control circuit (4), and the data superimposed on the frequency signal is separated and outputted. (14) is a modem circuit, which converts the ID code outputted from the control circuit (4), extension commands, call end commands, etc. described later into a predetermined frequency signal, and sends it to the transmitter (12) as transmission data. At the same time, the receiver (1
3) is demodulated and supplied to the control circuit (4).

(15) (16) are microphones and speakers for sending and receiving calls, (
17) is a communication path switching circuit, and this circuit is connected to the control circuit (4
) under the control of the telephone line, and a handset and transmitting/receiving unit (12) consisting of the microphone (15) and speaker (16).
(+3) is selectively switched and connected.

(18) is a dial signal generating circuit, which outputs a dial signal corresponding to the dial number supplied from the control circuit (4).

The functions of each part in FIG. 2 are the same as those of the parts with the same names in FIG. Therefore, each part in FIG. 2 is shown by adding a dash symbol to the number of each part with the same name in FIG. 1, and the explanation thereof will be omitted.

Further, the ID code stored in the program memory (3) of the child device (2) is the same as that of the parent device (1).

Figures 3 to 8 show the program memory (3) of the base unit (1).
) is a flowchart showing a control program stored in the main unit (1), and the operation of the base unit (1) will be explained below according to this chart.

First, in step S1, the transmitting section (12) and the receiving section (13) are connected to the telephone line, and the transmitting section (12) and the receiving section (13) are connected to the telephone line.
2) is brought to a stopped state. This is done by outputting a switching signal and a drive/stop signal from the control circuit (4).

In the following steps 82 to S4, input the extension key (7) or call key (8) on the keyboard (3) or press the handset (
2) Waits while performing N-ring processing until the ID code input from step 2 is detected. Although it is unclear in FIG. 3 that the steps 82 to S4 have a loop configuration, the above loop configuration becomes clear when referring to the specific processing form of the S4 step shown in FIG. 7, which will be described later. It will be.

When the input of the extension key (7) is detected on the S2 step knob, the process proceeds to step S5 shown in FIG.

In step S5, as shown in the specific processing procedure in FIG.
Hi: ro, set/display. In the following step 5502, the contents of the register CH marked E are changed to the synthesizer section (10).
It is determined whether the number of channels is greater than n, and if it is determined to be greater, the process returns to step 5501. Also, if it is determined to be small, the contents of register CH are incremented (+ ], , ) l,, continuation <550 in S:)03 stave.
In four steps, the contents of the register CH are output to the synthesizer section (10) as a channel number. As a result, the synthesizer section (]0) outputs a frequency signal corresponding to the channel number. Further, the receiving section (13) detects the presence or absence of a signal input using this output as a local oscillation frequency, and outputs the result to the control circuit (4). Therefore, the control circuit (4) controls the receiving section (13) in step 3505.
Determine the output of the signal, and if there is a signal, process 8502
Return to step. In addition, when there is no signal, a drive start signal is supplied to the transmitter (12) in step 5506,
The transmitter (12) is brought into a driving state.

Therefore, in the processing of steps 5501 to 8506 above,
Each channel of the synthesizer section (10) is sequentially searched for an empty channel, and when an empty channel is found, the transmitting section (12) is driven to secure the empty channel.

]--When step 5506 is completed, the process proceeds to step 86 in FIG. In step S6, the ID code is output to the handset (2). Specifically, the control circuit (1
) reads the ID code from the program memory (3) and outputs it via the modem circuit (14), medical communication section (12) and antenna (11).

In step <37, the extension command corresponding to the extension key (7) input detected in step S2 is output to the handset (2) in the same way as the ID code. After that, S8 Ste.
・Switch the communication path using the knob. in particular,
When the control circuit (1) outputs a switching signal to the communication path switching circuit (17), the circuit (17) switches to the microphone (15).
) and the speaker (16), the transmitter/receiver unit (12) (13)
Connect to.

After that, steps S9 and below will be processed.
In steps S9 to S12, it is determined whether the call end key (9) of the base unit (1) has been input, and whether a call end command or a call command has been sent from the slave unit (2).
It is sequentially determined whether the call key (8) of the base unit (1) has been input. In such a determination, if none of the inputs listed in 1- is present, the loop consisting of the steps 89 to 512 is cyclically processed and an extension call is made possible between the base unit (1) and the slave unit (2). .

Further, if input of the end call key (9) is detected in step S9, the process proceeds to step 813. In this step, a call termination command is sent to the handset (2) via the modem circuit (14), transmitter (12), and antenna (11). Next, in step 514, driving of the transmitter (12) is stopped. Specifically, this is performed by the control circuit (.t) outputting a drive stop signal to the transmitter (12).

When the step SL4 is completed, the process returns to step S2.

On the other hand, if a call termination command is detected in step 510, the process proceeds to step S14, and after completing this step, returns to step S2.

Further, if a call command is detected in step Sll, the process advances to step S15. In such a step,
The control circuit (4) outputs a switching signal to the communication path switching circuit (17), so that the circuit (17) switches to the transmitting/receiving section (
12) Connect (13) and the telephone line. Continuing 516
In this step, the terminal waits for input of a call termination command from the handset (2). Specifically, this waiting is to wait for an instruction to end the outside line call on the side of machine t (2). When a call termination command is detected in step S16, the process returns to step S2 via step S14.

Furthermore, if input of the call key (8) is detected in step S12, the process advances to step S17.

In this step and the following step S18, the above-mentioned 51
Similarly to step 3, 314, a call termination command is sent to the handset (2) and the drive of the transmitter (12) is stopped.

Next, steps 519 to S21 shown in FIG. 6 are processed, and these steps relate to an outside line call from the base unit (1). Specifically, in step S19, the communication path switching circuit (17) is controlled to connect the telephone line, the microphone (15), and the speaker (16).
In the 0 step, the system waits for a dial number to be input by operating the numeric keypad (6), and when the input is made, the dial is output to the telephone line via the dial signal generation circuit (18) and the call path switching circuit (17). Thereafter, in step 521, the outside line call is enabled until the input of the end call key (9) is detected, and when the key input is detected, the outside line call is terminated and the process returns to step 82.

Returning to FIG. 3, in step S3 above, the call key (
8) When the input is detected, the process proceeds to step S19 in FIG. 6, and the steps following step S19 are sequentially processed.

Next, the process of step 84 in FIG. 3 will be explained using FIG. 7. First, in step 5401, variable register CH is set to "0". In the continuation<5402 step, the contents of the register CH are changed to the synthesizer section (10).
It is determined whether the number of channels is greater than n, and if it is determined to be greater, the process returns to step S2. If it is determined to be small, the contents of the register CH are incremented (+1)L in step 5403, and the contents of the register CH are output as a channel number to the synthesizer section (10) in step <5404. Thereby, the synthesizer section (10) outputs a frequency signal corresponding to the channel number to the transmitting/receiving sections (12) and (13).

As a result, the receiving section (13) detects the presence or absence of a signal input using the output as a local oscillation number, and outputs it to the control circuit (4). Therefore, the control circuit (4) determines the output of the receiving section (13) in step 5405, and returns the process to step 5402 when there is no signal.

In addition, when there is a signal, it is determined in step 8406 whether the data input via the receiving section (13) matches the ID code stored in the program memory (3), and if there is a mismatch, then return to step 5402,
If they match, the process advances to step 5407. In step 5407, driving of the transmitting section (12) is started in the same way as in step 8506, and then, as shown in FIG.
Process steps 408-5410. 5408-54
In step 10, the system waits for either an extension command or a call termination command to be input from the handset (2). Then, when an extension command is input, the process proceeds from step 8408 to step 88, and when a call command is input, the process proceeds from step 5409 to step 815, and when a call termination command is input, the process proceeds to step S14. Proceed to step. Therefore, the above figures 7 and 8
S4゜]~S in the figure, by processing steps 110, it is searched whether or not the same ID code as the ID code stored in the program memory (3) has been sent out from the slave unit (2), As a result, when the same ID code is being sent out, the synthesizer section (10) is fixed to the channel on which the code was sent out, and the synthesizer section (10) is fixed to the channel where the same ID code is being sent out, and the synthesizer section (10) is fixed to the channel that the same ID code is sent out, and the synthesizer section (10) is fixed to the channel that the same ID code is sent out, and the synthesizer section (10) is fixed to the channel where the same ID code is sent out, and the synthesizer section (10) is fixed to the channel where the same ID code is sent out. Uncover and deal with it. Specifically, when inputting an extension command, it is possible to make an extension call by processing steps S8 and below, and when inputting a call command, it is possible to make an external call from the handset (2) side by processing steps S15 and below. When a call termination command is input, both the base unit (1) and the slave unit (2) are placed in the call termination state by processing steps from S14 onwards. 9 to 13 are flowcharts showing control programs stored in the program memory (3) of the slave unit (2), and the operation of the slave unit (2) will be explained below in accordance with such charts.

Each process in the flowcharts shown in Figures 9 to 13 is basically the same as each step explained in Figures 3 to 7, except that the control circuit (4) of the slave unit (2) processes the steps. There are many things that are the same. Therefore, in the following explanation, basically the same steps will only be shown as corresponding steps, and a detailed explanation of the operation will be omitted. The various commands shown in FIGS. 9 to 13 are sent from the slave unit (2) to the base unit (1), and the various commands are determined from the base unit (1) to the slave unit (2).
), and furthermore, the determination of various key inputs is to determine the key input on the slave unit (2).

Steps SI' to S4' shown in FIG. 9 correspond to steps 51 to S4 shown in FIG. 3, respectively.

Therefore, here, the user waits for the extension key (7)' or call key (8)° of the handset (2) to be input, or for the ID code to be input from the base unit (1).

FIG. 10 shows a flowchart when inputting the extension key (7) is detected in step S2' shown in FIG. 9, and steps 35' to S13' in FIG. 10 are explained in FIG. These steps are basically the same as the steps S5 to S7 and S9 to S14, respectively.

The difference between the flowchart shown in FIG. 10 and the flowchart shown in FIG. The point of stopping the transmitter (12)' in (2) and 817 in Fig. 4
There is also no processing corresponding to step S18.

Furthermore, the steps 8501' to 5506° in FIG. 11, which specifically show the S5° step, are the 5° steps explained in FIG.
This is the same as the 501° to 5506° step.

Steps S14 to 320° in FIG. 12 are processes for making an outside line call on the handset (2) side, and are similar to the processes for making an outside line call from the base unit (1) side explained in FIG. are very different.

Specifically, first, in step 314', an empty channel for communicating with the base unit (1) is searched based on the processing in steps 5501' to 8506 shown in FIG. 11, and then in step S15. In step S16, the ID code and the call command are sequentially sent to the base unit (1) to secure the above-mentioned channel and send a notification to the base unit (1) that an outside line call will be made. Thereafter, in step S17, the system waits for a dial number to be input from the numeric keypad (6), and when the number is input, the dial signal generation circuit (18)', transmitter (12)'' and antenna (1) are activated.
1) Output such a signal onto the telephone line by sending a dial signal to the base unit (1) via .

Next, at step 518°, an outside line call is enabled until the end call key (9) is input, and when the key (9) is input, the base unit (1) is activated at step 819'.
), and at the same time, the drive of the transmitter (12)' is stopped at step S20', and the process returns to step S2'.

FIG. 13 shows the S4° step in FIG. 9 in detail, and 8401' to 5407' in FIG.
The steps correspond to steps 3401 to 5.107 shown in FIG. 7, and when an ID code is being sent from the base unit (1), the synthesizer unit ( 10)' is fixed and the transmitter (12)' is started to be driven. After that, 84
At the 08° step, input of an extension command from the main unit 1) is waited, and the process proceeds to the S8° step.

Next, in order to make it easier to understand the operation of this embodiment, (i) When an extension call is requested from base unit 1) (ii)
When an extension call is requested from the handset (2) (iii) When an outside line call is requested from the base unit (1) (iv) When an outside line call is requested from the handset (2) (V) During an internal call, the base unit (1) )
The flow of operations will be explained for each case: when an external line call is requested from (X.l), during an internal line call, and when an external line call is requested from the handset (2).

(i) When requesting an extension call from the base unit (1), the base fi(+
) for an extension call request, press the extension key (7) on the base unit (1).
). The base unit (1) detects the input of the key (7) at step 82 in Figure 3.
After securing a channel for communicating with the handset (2) by sequentially processing steps 85 to 58 in Fig. 4, the loop consisting of steps 89 to 51.2 is repeatedly processed to enable extension calls. . Further, the slave unit (2) detects the ID code and extension command sent from the base unit (1) through the processes of steps S7 and S8 described above in step 54' (FIG. 9). More specifically, the above code and near? :/F in Figure 13 (7) S 406' and 34
Detected at step 08, 88° to 81 in Figure 10
1) Iteratively processes a loop consisting of 1' stamps, and 2) makes it possible to make an internal call. As a result, an extension call is possible between the base unit (1) and the slave unit (2).

After that, when the end call key (9) of the base unit (1) is input,
The parent device (1) detects this in step S9, and then
I. Terminate the extension call by sequentially processing one step and stopping the transmitter 02)1. Furthermore, due to such a stop, the signal will no longer be sent to the previously secured channel, so the above The suspension is actually 1,000 years...
The channel will be opened. At this time, F-machine (2) also
In the step, the end call command output by H813 step processing is detected, so
513" process and end the extension call.

On the other hand, when the end call key (9) of the handset 2) is input during the above extension call, the handset 41 (2) detects this in step S8 and processes steps 512 and S13. The master unit (1) detects the end call command output (through the processing in step S12) in step S10 and processes step S14, so the slave unit (1) (2) End the extension call together with base unit (1).

(]l) When an extension call is requested from the handset (2) An extension call request from the handset (2) is made by inputting the extension key (7)° of the handset (2).

When such a key (7) is input, the handset (2) detects it at step S2 in Fig. 9, and then steps S5 to S in Fig. 10.
After securing a channel for communicating with the base unit (1) by sequentially processing steps 7', repeat the loop consisting of steps 38' to S11', as in case (i) above. Furthermore, the base unit (1) processes the ID code and extension command sent from the slave unit (2) in 84 steps (Fig. 3) through the process of step S6'' and 57°. To detect. More specifically, the above code and command are converted into 8406 steps (
(Fig. 7) and 8408 step (Fig. 8), and after processing step 88 in Fig. 4, it is possible to make an extension call by repeatedly processing the loop consisting of steps S9 to S12 in the same way as in case (i) above.・Make it Noh. As a result,
As in case (i), extension calls are possible between the base unit (1) and the slave unit (2).

Then, press the end key (9) of the base unit (1) or slave unit (2).
)(9)' is input, the extension call is terminated as in case (1).

(iii) When an outside line call is requested from base unit (1) An outside line call request from base unit (1) is made by pressing the call key (
8). When such a key (8) is input, the base unit (1) detects it at step 83 in FIG. 3 and processes steps S19 to S21 in FIG. 6. Outside line +t! ＋ You can talk (1~・) When an external call is requested from handset (2),
For external call requests from 2), press the call key (8) on the handset (2).
)゛. Such key (8)
When there is a ° input, the handset (2) detects it at step S3 in Fig. 9, and first performs steps 814゛ to 816' in Fig. 12.
In step, a channel for communication with the base unit (1) is secured and a call command is sent to the base unit (1). On the other hand, the base unit (1) also processes the ID code and call command sent in steps S15 and S16 above in steps 5406 and 5409 (see Figures 7 and 8).
(Fig. 4), and the steps below 515 in Fig. 4 are processed, and the handset (2) is connected to the telephone line. Furthermore, since the handset (2) then processes steps S17 and S18, it becomes possible to make an outside call. Furthermore, when the call end key (9)° of the handset (2) is input, the handset (2) detects this at step S18, processes steps 819' and 820' sequentially, and selects the channel. The call is ended by releasing the button. Also, at this time, the main unit (1) detects the end call command sent in step S19° above in step 816 of FIG.
Since 14 steps are to be processed, the base unit (1) also ends the call.

(V) When the base unit (1) requests an external line call during an internal call.As explained in cases (i) and (ii), during an internal call, the base unit (1) performs step S9 in Figure 4. A loop consisting of steps 1.2 to 1.2 is repeatedly processed, and the slave unit (2) repeatedly processes a loop consisting of steps 58' to S11' in FIG. At this time, when the call key (8) of the base unit (]) is input, the base unit (1) detects this in step 512 and processes from step S17 onwards, so the above case (iii) Similarly, you can make outside calls.

On the other hand, the device (2) detects the end call command sent by the processing in step 317 above in step 59', and processes step S]3', so it is connected to the parent device (1). The channel is opened to end the communication.

(vi) When an external call is requested from handset (2) during an internal call.As explained in case (v), when an internal call is in progress, base unit (1) requests an external call.
is processing a loop consisting of steps 89 to S12, and slave unit (2) is processing a loop consisting of steps S8' to Sll'. At this time, when the call key (8) of the handset (2) is input, the handset (2) detects this at the Sll° step and processes steps from step 816' in Fig. 12. Therefore, as in case (iv) above, it becomes possible to make an outside line call from handset (2).

(g) Effects of the Invention According to the present invention, during an internal call between the base unit and the slave unit, an outside line call request from the slave unit can be made simply by inputting the call key, and the parent unit Since the channel used during the extension call is used to connect the machine and the handset, there is no need to access a separate channel as in the past, and switching from an extension call to an outside call can be done in a short time.

[Brief explanation of the drawing]

The figures show an embodiment of the present invention, FIGS. 1 and 2 are block circuit diagrams of a master unit and a slave unit, FIGS. 3 to 8 are flowcharts for explaining the operation of the master unit, and FIG. 9 is a flow chart for explaining the operation of the master unit. to 13th
The figure is a flowchart for explaining the operation of the slave unit. (])...Main unit, (2)...Slave unit, (4)(・1)
°...Control circuit, (7)'...Extension key, (
8) (8)'... External line key 5, (1 (1) (10)'
...Synthesizer section, (11)<11)゛ ...
Antenna, (12) (12)'... Transmitter, (13
) (13) "...Receiving section. Applicant: Sanyo Electric Co., Ltd. and one other agent Patent attorney Takuji Nishino (one other person) Figure 3 Figure 7 Figure 6 Figure 8 Figure 4

Claims (1)

[Claims] (1) A cordless telephone that is capable of making an extension call between a base unit and a handset and connects the base unit and handset using the MCA method, wherein the handset has an extension key that instructs an extension call. , a call key for instructing an outside call, a numeric keypad for inputting a dial number, a means for transmitting and receiving data to and from the base unit, a means for securing a channel for such transmitting and receiving, and input for each of the above keys. and means for controlling each of the above means in response to the input of the extension key, and when the call key is input while the extension key is input, the control means controls the above for the extension call. A cordless telephone characterized in that a dial number, etc. input from the numeric keypad is transmitted from the transmitting/receiving means to the base unit using a channel secured by the securing means.