JPH0450678Y2 - - Google Patents

Description

[Detailed explanation of the idea]

[Industrial Field of Application] The present invention relates to a wireless telephone device comprising a base unit connected to a central office line, and a slave unit connected to the base unit via a wireless communication path. [Prior Art] In a wireless telephone device, a base unit and a slave unit each have a built-in microcomputer as a control means, and each component in the base unit is controlled by the microcomputer built in the base unit. Each component inside the machine is controlled by a microcomputer built into the handset. On the other hand, a wireless telephone device performs desired processing while successively changing its own state in response to operational inputs or changes in line state. The decision whether to perform a state transition is made on both the base unit and the slave unit, and the determined transition information is sent to a slave unit other than itself or the base unit, and the transition state of the slave unit and the transition state of the base unit are The states are sequentially transitioned while ensuring that there are no discrepancies. For example, when it is necessary to perform a state transition based on input information from the operation section of the slave unit, the control means (microcomputer) in the slave unit determines the state transition, and the determined state transition information is transferred to the base unit. The control means is sent to match the transition states. Conversely, for example, when the state of the station line connected to the base unit changes and it is necessary to change the status based on the change, the control means (microcomputer) in the base unit determines this and also Send the determined state transition information to the slave device. [Problems to be solved by the invention] However, since determining state transition involves timer processing and relatively complicated arithmetic processing, it is necessary to provide a large-capacity memory. Therefore, the circuit scale of the control means inevitably becomes large, which becomes a major obstacle to reducing the size and weight. Especially for slave devices, how easy they are to carry is an important factor in determining usability, so there was a strong desire to reduce the size of the circuitry and make them smaller and lighter. . [Means for Solving the Problems] The wireless telephone device of the present invention has been developed in view of the above problems, and detects changes in various input states given to the handset from the outside and generates corresponding inputs. A detection means for outputting a change signal, and a control means for performing predetermined control based on the input change signal according to the transition state held and for performing state transition based on a state transition signal from the master device, are connected to the slave device. It determines the state to be transitioned to according to the input change signal from the handset, the line state, and various input state changes given to the base unit from the outside, and indicates the state to be transitioned to. State transition determining means for outputting a state transition signal is provided on the base unit side. [Operation] The determination of state transition is always made on the base unit side, and the control means on the slave unit side changes the state in accordance with the state transition signal sent from the base unit. [Embodiment] Fig. 1 is a block diagram showing a base unit of a wireless telephone device which is an embodiment of the present invention, and the wireless telephone device of this embodiment is configured so that it can support two slave units. has been done. The communication circuits 1 to 3 are all circuits that perform 2-wire and 4-wire conversion, and the communication circuit 1
is for the base unit, call circuit 2 is for the first slave unit, call circuit 3 is for the first slave unit.
is provided for the second slave device. Call circuit 1
A handset 4 equipped with a speaker and a microphone is connected to the 4-wire side of the telephone, and a telephone circuit 2
Wireless transmitting/receiving units 5 and 6 are connected to the four-wire sides of and 3, respectively. The wireless transmitting/receiving signals 5 and 6 are each composed of a transmitting section, a receiving section, a synthesizer section, and a duplexer. 6 performs wireless communication with a wireless transmitting/receiving unit built in the second handset. FIG. 2 is a block diagram showing the basic configuration common to both the first handset and the second handset, which is composed of a wireless transmitter/receiver section 40, a transmitter/receiver section 41, an operation section 42, and a control CPU 43. Through communication between the wireless transmitting/receiving section 40 and the wireless transmitting/receiving section 5 or 6 on the base unit side, the transmitting/receiving section 41 functions as if it were connected to the communication circuit 2.
Or it will behave as if it were directly connected to 3. In addition to dial keys, the operation unit 42 includes
It is equipped with function keys such as a call key and an end key. On the 2-line side of the base phone call circuit 1, there is a relay 7 that switches between internal and external lines, a switch 10 that connects and disconnects the call loop, a rectifier circuit 12 that rectifies the local current,
A station line relay 15 for capturing the station line L is connected. The office line relay 15 connects the office line L to the rectifier circuit 16 side during standby, and connects the office line L to the rectifier circuit 16 side based on a signal given from the CPU 21 when the handset 4 of the main unit is off-hook or when the call key of the handset is pressed. Switch L to the rectifier circuit 12 side, and connect the station line L
to capture. In addition, relay 7 is normally held on the central office line side, that is, on the switch 10 side, and is
This is switched to the extension 20 side based on an instruction from 21. Similarly, the handset communication circuits 2 and 3 are also connected to a switch 10 for switching on and off the communication loop via extension/external line switching relays 8 and 9, respectively, and can be connected to the central office line L. Similarly to relay 7, relays 8 and 9 normally connect communication circuits 2 and 3 to switch 10, respectively. The switch 10 connects and disconnects the closed loop formed between the central office exchange and the communication circuit 1 based on the switch control means 11, and a signal is inputted to the switch control means 11 from the dialer 13. The dialer 13 is a means for outputting a DP signal based on input from a dial key (numeric keypad) 14 provided on the operating section of the base unit and dial key input from the slave unit provided via the CPU 21. Note that the ringer sound generating means 18 is the incoming call detecting means 1.
The speaker 19 is driven based on the output of the main unit 7 to generate a ringing sound, and the switch 22 is a switch that detects the hooked state of the handset of the base unit. Next, the basic operation regarding state transition of this embodiment will be explained based on the flowcharts of FIGS. 3 and 4. Note that FIG. 3 shows the operation in the slave device, and FIG. 4 shows the operation in the master device. The child device constantly monitors whether a state transition signal from the parent device has been input (step 301) and whether or not there has been an internal change (step 303).
The state transition signal includes state number data of the state to be transitioned to, and when this state transition signal is received, the state held until that time is transitioned to the new state indicated by the state number data (step 3
03). The internal change in step 303 is
Refers to internal changes in the handset based on dial key operations and function key operations by the user.
In response to these operation inputs, the handset itself performs a predetermined operation according to the transition state at that time, and also sends a change signal indicating this internal change to the base device (step 304). On the other hand, in the base unit, internal changes in the base unit itself (step 401), changes in line status (step 402)
and input of change signals from slave units (step 40)
3) is constantly monitored. The internal changes in step 401 include internal changes based on various key operations as well as those based on timer processing. That is, a timer built into the CPU 21 is activated as needed, and internal changes are included as time passes. The change in line status mainly refers to the presence or absence of an incoming signal. Furthermore, the change signal from the slave unit includes information regarding internal changes in the slave unit, as described above. When any one of an internal change, a line state change, or a change signal is detected, a state to be transitioned to is determined according to the detected state, and the state transition is performed (step 404). Note that depending on the detection contents in steps 401 to 403, there may be no need to perform a state transition, but in that case,
It can also be thought of as transitioning to the same state. After the state to be transitioned to is determined in step 404, a state transition signal containing the state number data of the state to be transitioned to is sent to the slave device (step 405). However, if the state does not substantially change, the state transition signal is not sent. As described above, the slave unit changes the state based on this state transition signal. Possible states of the wireless telephone device of this embodiment include the following table.

[Effect of idea]

As explained above, according to the wireless telephone device of the present invention, the determination of state transition is always made on the base unit side, and the control means on the slave unit side uses the state transition signal sent from the base unit to determine the state transition. Therefore, there is no need for arithmetic processing and timer processing required to determine state transition. Therefore, the memory capacity of the slave device can be reduced accordingly,
The circuit scale can be reduced. This is effective in reducing the size and weight of the handset, and greatly contributes to improving ease of use and further popularizing wireless telephone devices.

[Brief explanation of the drawing]

FIG. 1 is a block diagram showing a base unit of a wireless telephone device which is an embodiment of the present invention, FIG. 2 is a block diagram also showing a slave unit, and FIG. 3 is a flowchart showing the operation of the CPU 43 of the slave unit. Figure 4 shows the main unit.
FIG. 5 is a flowchart showing the operation of the CPU 21, from the call originating operation to the end of the call at the handset. 1-3...Telephone circuit, 4...Telephone receiver, 5,
6,04... Wireless transmitter/receiver section, 21,43...
CPU, L...Station line.

Claims (1)

[Scope of utility model registration request] In a wireless telephone device consisting of a base unit connected to the central office line of an exchange and a slave unit connected to the base unit via a wireless communication path, internal changes in the slave unit itself are detected and corresponding change signals are generated. and a control means that performs a predetermined control based on the change signal according to the transition state held and performs state transition based on the state transition signal from the parent device, the slave device is provided with The parent device includes state transition determining means for determining the state to be transitioned to according to the change signal from the slave device, the line condition, or internal changes in the parent device itself, and outputting a state transition signal indicating the state to be transitioned to. A wireless telephone device installed on the machine side.