JP2001147749A - Electronic device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an interface, capable of corresponding to plural external devices in the case of connecting an electronic device to the external devices. SOLUTION: This electronic device 600, capable of executing data communication with an external device 400, is provided with an interface part 610 capable of connecting the external device 400, switching parts 601 to 605, 660 for switching one or both the electrical specifications and control specifications of a signal line of the interface part and a control part 660 for controlling the switching parts, according to a connected external device and allowed to correspond to plural external devices automatically or through an operator's setting.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an input / output interface in an electronic device such as a portable radio telephone device.

[0002]

2. Description of the Related Art Conventionally, in an electronic device such as a portable wireless telephone, an input / output interface for communication with a personal computer or the like is used so that the electronic device can be used for transmitting and receiving e-mails or the like by connecting to a portable personal computer or the like. have. This input / output interface has various specifications (electrical specifications and control specifications). In an electronic device that has only one type of input / output interface, connection cannot be established due to differences in interface specifications depending on the device to be connected. Was. Therefore, when trying to support a plurality of input / output interface specifications, the electronic device needs a plurality of interface circuits and interface connectors corresponding to these.
In the case of an electronic device such as a portable wireless telephone device, the shape is limited due to portability, and it has been difficult to physically provide a plurality of interface circuits and interface connectors.

[0003]

As described above, in the prior art, when a plurality of input / output interface specifications are supported, a plurality of input / output interface circuits and input / output interface connectors are required.
Also, some electronic devices have a feature that only one device is connected instead of a plurality of devices connected to the electronic device.

An object of the present invention is to solve the above-mentioned problems, to provide a connection between an electronic device and a plurality of interfaces having different specifications, and to provide an electronic device capable of connecting external devices having different interface specifications. With the goal.

[0005]

SUMMARY OF THE INVENTION In order to solve this problem, the present invention is to switch between an electrical specification and a control specification of an input / output interface of an electronic device so as to connect to an external device having a plurality of different interface specifications. It is composed. This provides an electronic device that can be connected to external devices having a plurality of different interface specifications.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The invention according to claim 1 is a wireless telephone device capable of data communication with an external device, wherein an interface unit to which the external device can be connected and a signal line of the interface unit are electrically connected. An electronic device comprising: a switching unit that switches one or both of specifications and control specifications; and a control unit that controls the switching unit in accordance with an external device to be connected, and has a plurality of different interface specifications. By switching between the electrical specification and the control specification of the input / output interface of the electronic device, an external device can be connected even if the external device has a plurality of different interface specifications.

According to a second aspect of the present invention, an external device having an input / output interface and an electronic device having an input / output interface for a signal having a potential different from the potential of the input / output interface of the external device are connected. A first voltage conversion circuit for converting a signal from the electronic device to a signal having a potential adapted to the external device by using a voltage from an input / output interface of the external device; and A connection device provided with a second voltage conversion circuit for converting a signal from the device into a signal having a potential adapted to the electronic device, wherein the external device and the electronic device each have an interface having different voltages. It has the effect that the connection is enabled by the device.

According to a third aspect of the present invention, there is provided a storage unit having an input unit capable of key input by an operator and a control program for a plurality of input / output interface specifications, and the storage unit having a plurality of input / output interface specifications. 3. The connection device according to claim 2, further comprising a control unit for selecting one of the control programs, wherein the connection is established even if the external device and the electronic device are interfaces having different voltage specifications and control specifications. It has the effect that the connection is enabled by the device.

According to a fourth aspect of the present invention, there is provided an electronic device for transmitting and / or receiving data via an input / output interface unit to / from an external device, wherein a supply voltage from the input / output interface of the external device is used. An output voltage conversion circuit for converting a signal from the electronic device to a signal having a potential suitable for the external device, and an input voltage conversion circuit for converting a signal from the external device to a signal having a potential suitable for the electronic device The electronic device has the function of being able to connect to the electronic device even when there is an external device having a plurality of interfaces having different electrical specifications.

According to a fifth aspect of the present invention, there is provided an input unit capable of inputting a key by an operator, a storage unit having a control program for a plurality of input / output interface specifications, and the storage unit having a plurality of input / output interface specifications. The electronic device according to claim 4, further comprising: a control unit that selects one of the control programs, even if there is an external device having different electrical specifications and control specifications of a plurality of interfaces, It has an effect that connection with the electronic device becomes possible.

According to a sixth aspect of the present invention, there is provided the electronic device according to any one of the first to fifth aspects, wherein the electronic device has a function of connecting to a plurality of interfaces having different electrical specifications and control specifications. Have.

According to a seventh aspect of the present invention, there is provided an electronic apparatus for transmitting and / or receiving data to and from an external device via an input / output interface unit, and detects a type of a signal output from the external device. Signal type detection unit, a storage unit for storing a plurality of input / output interface control programs, and selecting one of the input / output interface control programs according to the signal type detected by the signal type detection unit. The electronic device has a feature that the control specification for the interface can be automatically changed according to the type of a signal from the external device.

The invention according to claim 8 is an electronic device for transmitting and / or receiving data to / from an external device via an input / output interface unit, wherein a voltage from the input / output interface of the external device is used. A first voltage conversion circuit for converting a signal from the electronic device into a signal of a potential adapted to the external device, a signal type detection unit for detecting a type of a signal output from the external device, A storage unit that stores an input / output interface control program, and a switch unit that switches whether to output an output signal from the electronic device through a first voltage conversion circuit, and a signal detected by the signal type detection unit. An electronic device characterized in that the switch unit is switched according to a type, and an electrical specification of an output signal is automatically determined according to a type of a signal from an external device. It has the effect that can be changed.

According to a ninth aspect of the present invention, there is provided a second voltage conversion circuit for converting a signal from the external device into a signal having a potential suitable for the electronic device.
The electronic device described above has an effect that a signal from an external device can be normally received according to a signal type from the external device.

According to a tenth aspect of the present invention, there is provided a storage unit for storing a plurality of input / output interface control programs, wherein one of the input / output interface control programs corresponding to the signal type detected by the signal detection unit is selected. 9. The electronic device according to claim 8, wherein the electronic specification and the control specification for the interface can be automatically changed according to a signal type from an external device.

According to another aspect of the present invention, there is provided an electronic device for transmitting and / or receiving data to / from an external device via an input / output interface unit, wherein the storage unit stores a plurality of input / output interface control programs. ,
One or more input / output circuit units capable of setting input or output, an input unit that can be keyed by an operator, and, when there is an input to the input unit by the operator, according to the input information, An electronic device having a control unit for selecting one of a plurality of input / output interface control programs, and has an effect that an interface control specification can be changed by setting of an operator.

According to a twelfth aspect of the present invention, there is provided an electronic device for transmitting and / or receiving data to / from an external device via an input / output interface unit, wherein the storage unit stores a plurality of input / output interface control programs. ,
One or more input / output circuit units capable of setting input or output, an input unit that can be keyed by an operator, and, when there is an input to the input unit by the operator, according to the input information, An electronic device having a control unit that selects one of a plurality of input / output interface control programs and controls whether the input / output unit is used as an input or an output, and an input / output control for an interface is set by an operator. It has an effect that control specifications such as control signals and control signals can be changed.

According to a thirteenth aspect of the present invention, there is provided a switch unit for changing a potential of an output signal of the input / output circuit unit, and when an operator inputs to the input unit, the input information is transmitted to the input unit. 13. The electronic device according to claim 11, wherein a potential of an output signal of the input / output circuit is changed by the switch unit according to the control specification and an electrical specification for an interface according to a setting of an operator. Etc. can be changed.

According to a fourteenth aspect of the present invention, there is provided an electronic device for transmitting and / or receiving data to and from an external device via an input / output interface unit, wherein the at least one output device outputs an output signal to the external device. A circuit unit, an input unit that can be keyed by an operator, and a switch unit for changing a potential of an output signal of the output circuit unit. An electronic device wherein the potential of an output signal of the output circuit is changed by the switch unit in accordance with input information, and the voltage of the interface output signal can be changed by an operator setting. Having.

According to a fifteenth aspect of the present invention, there is provided an electronic device for transmitting and / or receiving data to / from an external device via an input / output interface unit, wherein the storage unit stores a plurality of input / output interface control programs. ,
An electronic device, comprising: a connector recognizing unit that recognizes a shape of a connector; and selecting one of the plurality of input / output interface control programs according to the connector information recognized by the connector recognizing unit. This has the effect that the control specifications can be changed depending on the difference in the connector shape.

According to a sixteenth aspect of the present invention, there is provided an electronic apparatus for transmitting and / or receiving data to / from an external device via an input / output interface unit, wherein input / output setting and output signal output voltage setting are performed. One or more input / output circuit units capable of performing the above-mentioned operations, and a connector recognition unit that recognizes the shape of the connector, and controls the input / output unit according to the connector information recognized by the connector recognition unit. It is an electronic device, and has an operation of automatically changing to an electrical specification of an input / output circuit of an interface according to a difference in a shape of a connector.

According to a seventeenth aspect of the present invention, in the electronic device according to the fifteenth aspect, the connector recognition unit recognizes a difference in the shape of the connector by one or more switches. It has the effect that it can be changed to electrical specifications and control specifications.

The invention according to claim 18 is the electronic device according to claim 15 or 16, wherein the connector recognition section recognizes a difference in the shape of the connector by one or more phototransistors. It has the effect of automatically changing to electrical specifications or control specifications due to differences.

(Embodiment 1) FIG. 1 is a block diagram of a wireless telephone according to Embodiment 1 of the present invention.

In FIG. 1, reference numeral 100 denotes an external device connected to the wireless telephone device. Reference numeral 101 denotes an interface unit of the external device 100, which has four external input / output terminals of input, output, power, and ground. Reference numeral 200 denotes a connection device for connecting the external device 100 and the wireless telephone device. In the connection device 200, 201 is the external device 1
A first voltage conversion circuit 202 for converting the voltage of the signal from 00 and outputting the converted signal;
00 is a second voltage conversion circuit, 203 is a diode for preventing backflow of current, 210 is a first interface connector for connecting to the external device 100, and 220 is a second interface connector for connecting to the wireless telephone device. Interface connector. Reference numeral 300 denotes a wireless telephone device. In the wireless telephone device 300, reference numeral 301 denotes an interface connector having an input terminal, an output terminal, a ground, and the like for inputting and outputting signals to and from the outside. Reference numeral 302 denotes a pull-up resistor for setting an input signal to a predetermined voltage; 340, a memory in which a control program for a plurality of input / output interface specifications for connection to an external device and a program for controlling the entire wireless telephone device 300 are stored. , 350 are input units for inputting and outputting commands and the like, and 360 is a control unit for controlling the wireless telephone device according to a program stored in the memory 340.

The operation of FIG. 1 will be described below. The user of the wireless telephone device 300 may connect the external device 1 to the wireless telephone device 300.
When connecting 00, a command for connecting an external device and the type of the external connection device are input from the input unit 350. When detecting that the command for connecting the external device and the type of the external device are input from the input unit 350, the control unit 360 reads the control program corresponding to the external device input from the memory 340, The control specification of signals input / output at the interface connector 301, that is, data rate, presence / absence of error detection, data format, signal logic, and the like are determined. In this state, when the external device 100 is connected via the connection device 200, an output signal from the external device 100 is output from the connection device 20.
0 is transmitted to the first voltage conversion circuit 201. When the Hi signal is transmitted from the external device 100, the voltage conversion circuit 201 turns on the transistor and outputs the ground level, that is, Low. In addition, the external device 10
When a Low signal is transmitted from 0, the transistor becomes O
In the FF state, a signal of a potential corresponding to the potential of the pull-up power supply of the pull-up resistor 301 of the wireless telephone device 300 is output. Thus, the signal output from the external device 100 is converted into an appropriate voltage, output to the second interface connector 220 of the connection device 200, and input to the wireless telephone device 300 via the interface connector 301. Similarly, the output signal from the wireless telephone device 300 is output to the second voltage conversion circuit 202 of the connection device 200.
Conveyed to. The voltage conversion circuit 202 is connected to the wireless telephone device 3
When the signal of Hi is transmitted from 00, the transistor becomes O
The state becomes N, and the ground level, that is, Low is output. When a Low signal is transmitted from the wireless telephone device 300, the transistor is turned off, and a signal having a potential corresponding to the potential supplied from the external device 100 through the diode 203 is output. Thus, the signal output from the wireless telephone device 300 is converted into an appropriate voltage, output to the first interface connector 210 of the connection device 200, and input to the external device 100 via the interface unit 101.

In the example of the first embodiment, the logic of the input / output signal is inverted as described above by passing through the conversion device 200.
When the external device 100 is connected to the wireless telephone device 300 via the conversion device 200, the control specification of the input / output signal is changed so that the logic of the signal is inverted, and the wireless telephone device 300 operates. In addition to inputting a command to be selected by the external device from the input unit, a command for inverting input / output ethics is input, and the control unit 360 detects a logical inversion command, thereby inverting the logic and performing control. In some embodiments, a program to be executed is read from the memory 340, and the input / output control specifications are controlled to be logically inverted to operate.
In this case, depending on the logical characteristics of the conversion device, the user:
It is determined whether to invert the logic of the signal, and a command for determining the logic of the signal is input from the input unit.

In the first embodiment, the connection device 200
Is provided separately from the electronic device 300, but the electronic device 300
It may be built in.

(Embodiment 2) FIG. 2 is a block diagram of a wireless telephone according to Embodiment 2 of the present invention.

In FIG. 2, reference numeral 400 denotes a first external device connected to the wireless telephone device, which operates according to an RS232C interface specification, and operates at an interface voltage specification of 5V. Reference numeral 401 denotes an interface unit of the first external device 400, which has four external input / output terminals of RXD, TXD, power supply, and ground. Reference numeral 500 denotes a second external device connected to the wireless telephone device, which operates according to an interface specification for inputting and outputting a signal in synchronization with a control clock, and has a voltage specification of 3 V for the interface.
Works with Reference numeral 501 denotes an interface unit of the second external device 500, which has four external input / output terminals of RXD, TXD, CLK, and ground. Reference numeral 600 denotes a wireless telephone device.

In the wireless telephone device 600, 601
A first voltage conversion circuit 602 for converting a signal from an external device as necessary and outputting the converted signal; 602, a second voltage conversion circuit for converting the voltage of an input signal and outputting the converted signal to the external device;
Is a diode for preventing a backflow of current, 604 is a first switch for switching a path of a signal output from the wireless telephone device 600, 605 is a second switch for switching a path of a signal output from the wireless telephone device 600, 610. Are RXD, TXD, power supply / CLK for connecting to an external device,
An interface connector 640 having a ground input / output terminal, a control program 640 for a plurality of input / output interface specifications for connection to an external device and a wireless telephone device 6
A memory in which a program for controlling the whole 00 is stored, 6
Numeral 60 controls the wireless telephone device according to a program stored in the memory 640, and inputs and outputs signals to and from an external device by three.
This is a control unit that performs control using a digital signal having an amplitude of V.

The operation of FIG. 2 will be described below. When the first external device 400 is connected to the wireless telephone device 600, the first
A DC potential of 5 V output from the power supply terminal of the interface unit 401 of the external device 400 is output to the control unit 660 of the wireless telephone device 600 through the diode 603 via the interface connector 610. Further, the second external device 500 is connected to the wireless telephone device 600.
Is connected, a 32 kHz 3 V of 32 kHz for synchronization generated by the second external device output from the clock output terminal CLK of the interface unit 501 of the second external device 500
A rectangular wave of amplitude is output and the interface connector 6
The signal is passed through the diode 603 via 10 to the control unit 660 of the wireless telephone device 600. Wireless telephone device 60
0 of the interface connector 610
/ C input through diode 603 through
The input signal of the terminal of LK is monitored, and when it is detected that a direct current of 5 V is applied, RS23 is read from the memory 640.
A program for operating the external interface is read according to the 2C interface specification, and the control specifications corresponding to the RS232C control specifications, that is, data speed, presence / absence of error detection, data format, signal logic, and the like are determined. Further, when it is detected that a rectangular wave signal having a 3 V amplitude of 32 kHz is applied, a program for controlling the external interface to operate in synchronization with the control clock is read from the memory 640, and the control specification, that is, the data rate is read. , The presence or absence of error detection, the data format, the logic of the signal, and the like.

In the actual control operation, the control unit 6 checks that the first external device 400 is connected as described above.
When the switch 60 detects the signal, it operates so as to input and output the control specification of the signal according to the control specification of the RS232C, and controls the first switch 604 and the second switch 605 to change the electrical specification of the interface. Part 660
The first switch 604 and the second switch 6 output the output signal from the second switch 602 via the second voltage conversion circuit 602.
Switch 05. Thus, the digital signal of 3V amplitude output from the control unit 660 is
At 02, the signal is converted into a digital signal having a 5V amplitude and output to the TXD terminal of the interface connector 610. The 5V-amplitude digital signal output from the interface TXD of the first external device is input to the RXD terminal of the interface connector 610, converted into a 3V-amplitude digital signal by the first voltage conversion circuit 601 and controlled. Input to the section 660. On the other hand, when the control unit 660 detects that the first external device 500 is connected, the control specification of the signal is input according to the control specification for inputting and outputting the signal in synchronization with the control clock input from the external device. The first switch 604, the second switch 604, and the
And the first switch 604 and the second switch 605 are switched so that the output signal from the control unit 660 is output without passing through the second voltage conversion circuit 602. Thus, the digital signal having a 3V amplitude output from the control unit 660 is output to the TXD terminal of the interface connector 610 as it is. Also, 3V output from the interface TXD of the first external device
The digital signal of the amplitude is supplied to the interface connector 6.
10 to the first voltage conversion circuit 60
1 and the control unit 6 with the digital signal of 3V amplitude as it is.
60 is input.

As one example of the change of the control specification of the signal, the logical control of the signal will be described below.

When the control unit 660 detects that the first external device 500 is connected, the control unit 660 reads the memory 6
From 40, the control unit 660 reads a program that controls input and output to operate in negative logic, operates to handle input and output signals as negative logic signals, and notifies the control unit 660 that the second external device 500 is connected. Upon detection, the control unit 660
Reads from the memory 640 a program that controls the input to operate in negative logic and the output to operate in positive logic, and operates so that the input / output signal is treated as negative logic and the output signal is treated as positive logic.

Although the present embodiment is described as a wireless telephone device, the present invention is not limited to this, but is widely applied to electronic devices in general.

As the electronic device, a portable electronic device, in particular, PH
It is suitable for portable wireless telephone devices such as S and mobile communication terminals.

(Embodiment 3) FIG. 3 is a block diagram of a wireless telephone according to Embodiment 3 of the present invention.

In FIG. 3, reference numeral 700 denotes a wireless telephone device. In the wireless telephone device 700, 701 is an input buffer circuit for an input signal from an external device, 702 is an output buffer circuit for outputting a signal to the external device, 7
04 is a first switch for switching a signal path in the wireless telephone device 700, 705 is a second switch for switching a signal path in the wireless telephone device 700, 710 is an input / output for connecting to an external device, and a ground switch. An interface connector having terminals; 740, a memory storing a control program for a plurality of input / output interface specifications for connection with an external device and a program for controlling the entire wireless telephone device 700;
Is a control unit that performs control according to the program stored in the. Note that blocks requiring the same functions as those in the example of the first embodiment shown in FIG. 1 are assigned the same numbers, and descriptions thereof are omitted.

The operation of the third embodiment of the present invention shown in FIG. 3 will be described below. The signal terminal of the interface connector 710 of the wireless telephone device 700 is switched and used as an input or output signal terminal. This switching is determined by a command input from the input unit 350 according to the external device connected by the user, as described in the first embodiment. When a command using an input / output terminal of the interface connector 710 as an input terminal is input from the input unit 350 and detected by the control unit 760, the interface 710 is output from the memory 740.
A program for using the input / output terminal of the connector as an input terminal is read, and the control unit 760 enters a state where an external signal can be input. Also, the control unit 760
The first switch 704 controls the first switch 704 and the second switch 705 so that a signal input from an input / output terminal of the interface connector 710 is input to the control unit 760 via the input buffer circuit 701. The second switch 705 is switched. Also, the input unit 350
When a command using the input / output terminal of the interface 710 connector as an output terminal is input and detected by the control unit 760, a program for using the input / output terminal of the interface connector 710 as an output terminal from the memory 740. Is read, and the control unit 760 is ready to output a signal to the outside. The control unit 7
60 is a first switch 704, a second switch 705
And a signal output from the control unit 760 is output to the interface connector 7 via the output buffer circuit 702.
The first switch 7 is output from the input / output terminal
04, the second switch 705 is switched.

In this embodiment, an example of one input / output signal to be switched has been described. However, a plurality of such input / output switches may be provided. Further, in such a wireless telephone device having a plurality of input / output signals that can be switched, each of the input / output signals is independently controlled, and the input and the output may be set to be mixed. In the third embodiment, the description of the external devices connected to the wireless telephone device is omitted, but examples of the external devices connected to the wireless telephone device of the third embodiment include an LCD and a keyboard. In recent years, a service that allows access to the Internet using a wireless telephone device and obtain information on a Web site has been started. However, the display unit of the wireless telephone device has insufficient display capability, and an externally attached large screen display is required. It is possible to enhance the convenience by connecting the sections and displaying the contents of the Web site. Also, there are many wireless telephone devices with mail function,
With only the input unit of the wireless telephone device, the operability at the time of creating a text of an e-mail is poor, so that a keyboard can be connected to improve the operability of character input. As described above, in order to supplement the functions of the display unit and the input unit of the main body of the wireless telephone device, an external LCD is provided.
If you connect a keyboard or keyboard,
Because of the demand for portability, miniaturization is required, and the demand for low cost is required to reduce the number of parts. It is difficult to have a plurality of interface units corresponding to external devices. It is very effective that any one of the LCD and the keyboard can be connected to the connector of the same interface unit as required.

Although the present embodiment is described as a wireless telephone device, the present invention is not limited to this, and is widely applied to electronic devices in general.

As the electronic device, a portable electronic device, in particular, PH
It is suitable for portable wireless telephone devices such as S and mobile communication terminals.

(Embodiment 4) FIG. 4 is a block diagram of a wireless telephone according to Embodiment 4 of the present invention.

In FIG. 4, reference numeral 800 denotes a wireless telephone device. In the wireless telephone device 800, reference numeral 820 denotes a voltage switching circuit for switching the voltage level of the Hi signal of the output signal to 3 V or 5 V. Reference numeral 840 denotes a control program for a plurality of input / output interface specifications for connection to an external device, or the wireless telephone device 800. A memory 860 stores a program for controlling the whole, and a control unit 860 controls the wireless telephone device according to the program stored in the memory 840. Note that blocks requiring the same functions as in the example of the third embodiment shown in FIG.

The operation of FIG. 4 will be described below. The signal terminal of the interface connector 710 of the wireless telephone device 800 is switched and used as an input or output signal terminal as in the third embodiment. However, the wireless telephone device of the fourth embodiment has the above functions in addition to the above functions. And the signal H
It is possible to switch the voltage level of i to 3V or 5V. This switching is determined by a command input from the input unit 350 according to the external device connected to the user as described in the first embodiment.
When a command to use the input / output terminal of the interface 710 as an input / output terminal for inputting / outputting a 5 V signal is input from the input unit 350 and detected by the control unit 860, the interface connector 710 is output from the memory 840.
An input / output interface control program for using the input / output terminals of the input / output terminals as input / output terminals of 5 V signals is read, and the control unit 860 controls the voltage switching circuit 820 and is supplied to the output buffer circuit 702. The voltage is set to 5V. Also, from the input unit 350,
When a command to use an input / output terminal of the interface connector 710 as an input / output terminal for inputting / outputting a 3 V signal is input and detected by the control unit 860, an input / output terminal of the interface connector 710 is detected from the memory 840. Is read as an input / output terminal of a 3V signal, and the control unit 860 controls the voltage switching circuit 820 to change the voltage supplied to the output buffer circuit 702 to 3V.
Set to

Although the description of the external device connected to the wireless telephone device in the fourth embodiment is omitted, the external device connected to the wireless telephone device in the fourth embodiment operates at 3V. In order to use an electronic telephone directory and a personal computer that operates at 5V, and to use both by connecting to the connector part of the common interface, the electrical specification of the signal of the connector is switched to 3V or 5V. Used for

Although the present embodiment is described as a wireless telephone device, the present invention is not limited to this and is widely applied to electronic devices in general.

As the electronic device, a portable electronic device, in particular, PH
It is suitable for portable wireless telephone devices such as S and mobile communication terminals.

(Embodiment 5) FIG. 5 is a perspective view of a wireless telephone according to Embodiment 5 of the present invention.

In FIG. 5, reference numeral 1000 denotes a wireless telephone device. In the wireless telephone device 1000, reference numeral 1001 denotes an interface connector for connecting to an external device;
Reference numeral 002 denotes a switch whose output is connected to the control unit of the wireless telephone device 1000 for recognizing the connected external device. 2000 is a wireless telephone device 10
00 is an interface connector on the side of the first external device for connection to 00. Interface connector 200
Reference numeral 0 denotes a projection 2001 provided so as to depress the switch 1002 of the interface connector 1001 when the interface connector 2000 of the first external device is connected to the interface connector 1001 of the wireless telephone device 1000. Reference numeral 3000 denotes an interface connector on the side of the second external device for connecting the second external device to the wireless telephone device 1000.

The operation of the radio telephone apparatus according to the fifth embodiment configured as described above will be described.

Connector 1001 of wireless telephone device 1000
Is connected to the connector 2000 of the first external device, the switch 2001 of the connector portion of the wireless telephone device 1000 is pressed by the protrusion 2001 of the connector 2000. Further, when the connector 3000 of the second external device is connected to the connector 1001 of the wireless telephone device 1000, the switch 3000 of the connector portion of the wireless telephone device 1000 is not depressed because the connector 3000 has no projection. The wireless telephone device 1000 is a connector 100
0, when inputting / outputting a signal to / from an external device via the external device 200, the control unit determines whether the connected external device is the first external device 200 according to whether or not the switch 1002 is pressed.
Judgment is made to 0 or the second external device 3000, and control is performed so that the electrical specifications and control specifications of the input / output signals are operated according to the specifications according to each external device. The above control is the same as the example described in the first to fourth embodiments, and the description is omitted.

In the present embodiment, an example has been shown in which one type of external device is determined by providing one switch. However, by providing a plurality of switches, it is possible to determine which switch has been pressed. By doing so, it is possible to determine three or more types of external devices.

Further, in the fifth embodiment, the external device to be connected is determined based on whether or not a mechanical switch is pressed. It is possible if possible. For example, when a phototransistor is provided in a wireless telephone device and a light receiving section is arranged in a connector section, and when a connector of an external apparatus is connected, light input to the light receiving section is blocked by the connector of the external apparatus. A method is also possible in which the type of the connected external device is determined based on whether or not the external device is connected.

In the first to fifth embodiments,
Examples of the method of determining the external device include a command input from an input unit, an electric signal input from a terminal of a connector unit, a shape determination of a connector, and the like, but these can be used in combination at the same time. .

Although the present embodiment is described as a wireless telephone device, the present invention is not limited to this, and is widely applied to electronic devices in general.

As the electronic device, a portable electronic device, in particular, PH
It is suitable for portable wireless telephone devices such as S and mobile communication terminals.

[0059]

As described above, according to the present invention, one or both of the electrical specification and the control specification of the signal line of the interface unit to which the external device can be connected are switched automatically or by setting by the operator. Accordingly, data communication or the like can be performed by connecting more external devices.

[Brief description of the drawings]

FIG. 1 is a block diagram of a wireless telephone according to Embodiment 1 of the present invention.

FIG. 2 is a block diagram of a wireless telephone according to Embodiment 2 of the present invention.

FIG. 3 is a block diagram of a wireless telephone according to a third embodiment of the present invention.

FIG. 4 is a block diagram of a wireless telephone according to a fourth embodiment of the present invention.

FIG. 5 is a perspective view of a wireless telephone according to a fifth embodiment of the present invention.

[Explanation of symbols]

REFERENCE SIGNS LIST 100 external device 101 external device interface unit 200 connecting device 201 connecting device first voltage conversion circuit 202 connecting device second voltage converting circuit 203 connecting device diode 210 first interface connector 220 second interface connector 300 wireless telephone device 301 Interface connector of wireless telephone device 302 Pull-up resistor of wireless telephone device 340 Memory of wireless telephone device 350 Input unit of wireless telephone device 360 Control unit of wireless telephone device 400 First external device 401 First external device interface unit 500 Second external device 501 Second external device interface unit 600 Radiotelephone device 601 First voltage conversion circuit of radiotelephone device 602 Second voltage conversion circuit of radiotelephone device 603 Diode of radiotelephone device 04 First switch of wireless telephone device 605 Second switch of wireless telephone device 610 Interface connector of wireless telephone device 640 Memory of wireless telephone device 660 Control unit of wireless telephone device 700 Wireless telephone device 701 Input buffer of wireless telephone device Circuit 702 Buffer circuit for output of wireless telephone device 704 First switch of wireless telephone device 705 Second switch of wireless telephone device 710 Interface of wireless telephone device 740 Memory of wireless telephone device 760 Control unit of wireless telephone device 800 Wireless telephone Device 820 Voltage switching circuit of wireless telephone device 840 Memory of wireless telephone device 860 Control unit of wireless telephone device 1000 A wireless telephone device. 1001 Interface connector of wireless telephone device 1002 Switch of wireless telephone device 2000 Interface connector on first external device side 2001 Interface connector protrusion on first external device side 3000 Interface connector on second external device side

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Toshiaki Sugauchi 1006 Kadoma, Kazuma, Osaka Prefecture Inside Matsushita Electric Industrial Co., Ltd. F term (reference) 5K067 AA34 AA42 BB02 EE02 FF31 HH21 KK00 5K101 LL12 MM06 NN02 NN18 NN25 NN40 NN41

Claims (18)

[Claims] 1. A wireless telephone device capable of data communication with an external device, wherein the interface device is connectable to the external device, and one or both of an electrical specification and a control specification of a signal line of the interface unit are switched. A wireless telephone device comprising: a switching unit; and a control unit that controls the switching unit in accordance with an external device connected thereto. 2. A connection device connected between an external device having an input / output interface and an electronic device having an input / output interface for a signal having a potential different from the potential of the input / output interface of the external device. A first voltage conversion circuit that converts a signal from the electronic device to a signal of a potential adapted to the external device by using a voltage from an input / output interface of the external device, and a signal from the external device. A connection device provided with a second voltage conversion circuit that converts the signal into a signal having a potential suitable for the electronic device. 3. An electronic device, comprising: a storage unit having an input unit capable of key input by an operator and a control program for a plurality of input / output interface specifications; and the plurality of control units from the storage unit based on input information of the input unit. The connection device according to claim 2, further comprising a control unit that selects one of the programs. 4. An electronic device for transmitting and / or receiving data via an input / output interface unit to / from an external device, wherein the electronic device uses a supply voltage from an input / output interface of the external device. An electronic device comprising: an output voltage conversion circuit that converts a signal of the external device into a signal of a potential adapted to the external device; and an input voltage conversion circuit that converts a signal from the external device to a signal of a potential adapted to the electronic device. . 5. An electronic device, comprising: an input unit which can be keyed by an operator; a storage unit having a control program for a plurality of input / output interface specifications; The electronic device according to claim 4, further comprising a control unit that selects one of the control programs. 6. The electronic device according to claim 4, wherein the electronic device is a portable wireless telephone device. 7. An electronic device for transmitting and / or receiving data to and from an external device via an input / output interface unit, wherein the signal type detecting unit detects a type of a signal output from the external device. An electronic device, wherein one of the input / output interface control programs is selected according to a signal type detected by the signal type detection unit and a storage unit that stores a control program for a plurality of input / output interfaces. 8. An electronic device for transmitting and / or receiving data via an input / output interface unit to / from an external device, wherein the electronic device receives voltage from the input / output interface of the external device by using a voltage from an input / output interface of the external device. A first voltage conversion circuit that converts a signal into a signal having a potential suitable for the external device, a signal type detection unit that detects a type of a signal output from the external device, and a plurality of input / output interface control programs. A storage unit for storing, and a switch unit for switching whether to output an output signal from the electronic device through a first voltage conversion circuit, and the switch unit according to a signal type detected by the signal type detection unit. An electronic device characterized by switching. 9. The electronic device according to claim 8, further comprising a second voltage conversion circuit that converts a signal from the external device into a signal having a potential suitable for the electronic device. 10. A storage unit for storing a plurality of input / output interface control programs, wherein one of the input / output interface control programs corresponding to a signal type detected by the signal detection unit is selected. 9. The electronic device according to claim 8, wherein: 11. An electronic device for transmitting and / or receiving data to / from an external device via an input / output interface unit, comprising: a storage unit for storing a plurality of input / output interface control programs; One or more input / output circuit units, an input unit capable of key input by an operator, and the plurality of input / output interfaces according to the input information when the operator inputs to the input unit. An electronic device having a control unit for selecting one of the control programs. 12. An electronic device for transmitting and / or receiving data to / from an external device via an input / output interface unit, comprising: a storage unit for storing a plurality of input / output interface control programs; One or more input / output circuit units, an input unit capable of key input by an operator, and the plurality of input / output interfaces according to the input information when the operator inputs to the input unit. An electronic device having a control unit for selecting one of the control programs and controlling whether to input or output the input / output unit. 13. A switch unit for changing a potential of an output signal of said input / output circuit unit, said switch unit being operated in response to an input to said input unit by an operator. 13. The electronic device according to claim 11, wherein a potential of an output signal of the input / output circuit is changed by the control unit. 14. An electronic device for transmitting and / or receiving data to / from an external device via an input / output interface unit, wherein the at least one output circuit unit outputs an output signal to the external device; An input unit that can be keyed by, and a switch unit for changing the potential of the output signal of the output circuit unit, according to the input information when there is an input to the input unit by the operator, An electronic device, wherein a potential of an output signal of the output circuit is changed by the switch unit. 15. An electronic device for transmitting and / or receiving data to / from an external device via an input / output interface unit, wherein the storage unit stores a plurality of input / output interface control programs, and recognizes the shape of the connector. An electronic device that has one of a plurality of input / output interface control programs according to the connector information recognized by the connector recognition unit. 16. An electronic device for transmitting and / or receiving data to and from an external device via an input / output interface unit, wherein one or more of the electronic devices can set input or output and output voltage of an output signal. An electronic device, comprising: an input / output circuit unit; and a connector recognition unit that recognizes a shape of a connector, wherein the input / output unit is controlled according to the connector information recognized by the connector recognition unit. 17. The electronic device according to claim 15, wherein the connector recognition unit recognizes a difference in the shape of the connector by using one or more switches. 18. The electronic device according to claim 15, wherein the connector recognition unit recognizes a difference in the shape of the connector by using one or more phototransistors.