JP4014206B2 - Information processing system, mobile phone terminal device and connection cable - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an information processing system using a plurality of mobile phone terminal devices, a mobile phone terminal device, and a connection cable for connecting the plurality of mobile phone terminal devices.
[0002]
[Prior art]
A so-called Java (registered trademark) is known as a technique for absorbing differences in hardware platforms such as an MPU, a display unit, and input means and realizing program sharing between different platforms.
[0003]
This Java (registered trademark) has several specifications depending on the scale of the hardware platform. Among them, the processing capability and memory capacity of an MPU such as a mobile phone terminal device, so-called PDA (personal digital assistant) There is a specification (Java (registered trademark) -ME [Micro Edition]) for a device in which is restricted.
[0004]
In order to operate a script according to Java (registered trademark) -ME on an actual apparatus, a configuration that defines a basic library and a script execution environment for executing a script using the library, A profile that defines the processing contents that can be executed on this Configuration is required.
[0005]
For example, CLDC (Connected Limited Device Configuration) as a configuration and MIDP (Mobile Information Device Profile) as a profile are included in mobile phone terminals of personal digital cellular (PDC) type mobile communication systems currently distributed. (For example, refer nonpatent literature 1).
[0006]
The script created according to the above-described standard is provided from the providing server device to the mobile phone terminal device via the wireless communication line, and stored in the memory inside the device. The script stored in the memory is executed in accordance with an instruction from the user, and information processing such as a game is executed.
[0007]
By the way, in the above-mentioned PDC system mobile phone terminal device, there is a case where a so-called PDC common specification serial interface is provided for connection to an external device such as a modem device or a memory backup device (for example, non-patent document). 1 and Patent Document 1).
[0008]
This serial interface can be connected to an external device via a connector having a shape as shown in FIG. This connector has two high-frequency terminals and 16 signal terminals c1 to c16.
[0009]
The signals of the terminals c1 to c16 are transmitted according to the PDC common specification, for example, as shown in FIG. 5, the ground voltage (serial signal ground), the signal received by the mobile phone terminal device (uplink serial signal), and the mobile phone terminal device. Signal (downward serial signal), signal to detect the device connected to the connector (unit presence / absence), control signal from the connected device (portable device operation unit control signals 1 and 2), power supply of external device (unit power supply) ) Etc.
[0010]
As a device connected to a mobile phone terminal device provided with a serial interface as described above, for example, a device that rewrites the contents of a memory inside the mobile phone terminal device is known (see, for example, Patent Document 2 and Patent Document 3). ).
[0011]
[Non-Patent Document 1]
Hideki Yonekawa, “Java2ME MIDP Game Creator's Guide J-PHONE KDDI Fully Compatible”, Technical Review Co., Ltd., June 1, 2002, p. 18-30
[Non-Patent Document 2]
NTT DoCoMo, Inc. “Technical Reference Material for Using Mobile Phone Terminal Device Telephone Service (Digital) Version 3.0”, April 3, 2000, [September 2002 Search on the 20th], Internet <URL: http://www.nttdocomo.co.jp/corporate/r_d/pdf/jidoushadenwa.pdf>, p. 9-112
[Patent Document 1]
Japanese Laid-Open Patent Publication No. 10-79782 (FIG. 2, FIG. 5)
[Patent Document 2]
Japanese Laid-Open Patent Publication No. 7-303130 (FIG. 2)
[Patent Document 3]
JP 2000-115329 A ([0016]-[0017], FIG. 1)
[0018]
[Problems to be solved by the invention]
By the way, in the PDC system mobile phone terminal device as described above, when the above-mentioned Java (registered trademark) environment is implemented, a plurality of mobile phone terminal devices are connected by a serial cross cable, and a plurality of mobile phone terminal devices are connected. There is a demand for information processing such as a game using a computer.
[0019]
However, since the above-described serial interface is premised on the connection of an existing device such as a memory copy device, if a conventional serial cross cable is connected, the mobile phone terminal device determined by the PDC common specifications is used. An operation such as memory copy is started. For this reason, information processing such as a game using a plurality of mobile phone terminal devices cannot be executed as it is.
[0020]
In the serial interface specification described above, a signal related to a call such as an incoming call is transmitted and received regardless of whether or not a device is connected to the serial interface. For example, when an incoming call is made to one mobile phone terminal device connected by a serial cross cable, a signal indicating the caller number of the call is supplied to the other mobile phone terminal device via the serial cross cable. The mobile phone terminal device that has received such a signal calls the supplied caller number.
[0021]
Therefore, even if an operation such as the above-described memory copying operation can be prevented, for example, when information processing using a plurality of mobile phone terminal devices is being performed, one mobile phone terminal device receives an incoming call. Then, the information processing may be interrupted or the execution may be hindered. For this reason, there is room for improvement in the reliability of information processing using a plurality of mobile phone terminal devices.
[0022]
The present invention has been made in view of the above-described problems, and provides an information processing system, a mobile phone terminal device, and a connection cable that can contribute to the reliability of information processing using a plurality of mobile phone terminal devices. The purpose is to provide.
[0023]
[Means for Solving the Problems]
In order to solve the above-described problem, an information processing system according to the present invention receives a received signal. input Up serial signal Terminal And the transmission signal output Down serial signal Terminal When, Unit presence / absence voltage supply terminal to which voltage according to presence / absence of connected unit is supplied, and suppression voltage output terminal that outputs voltage according to operation mode A mobile phone terminal device having a serial interface, and a serial interface Wiring that connects the suppression voltage output terminal and the downstream serial signal terminal with the unit presence / absence voltage supply terminal open or in a high impedance state A connection cable, and an information processing apparatus connected to the mobile phone terminal device via the connection cable; In the execution mode (serial mode) in which the mobile phone terminal uses communication via the serial interface, the suppression voltage output terminal is opened or in a high impedance state, and in other states, the down serial signal is output to the suppression voltage output terminal. Means to output voltage to mask It is characterized by providing.
[0024]
The mobile phone terminal device according to the present invention is An up serial signal terminal for inputting a reception signal, a down serial signal terminal for outputting a transmission signal, a unit presence / absence voltage supply terminal to which a voltage according to the presence / absence of a connected unit is supplied, and a voltage according to an operation mode Mode determination means for determining whether or not an execution mode (serial mode) using communication via the serial interface according to identification information defined in the script and a serial interface having a suppression voltage output terminal to output The script execution means capable of executing the script in the serial mode, and depending on the determination result by the mode determination means, the suppression voltage output terminal is opened or in a high impedance state in the serial mode, and the suppression voltage in the other states Suppressor that outputs a voltage that masks the downstream serial signal to the output terminal It is characterized by providing.
[0025]
In addition, the connection cable according to the present invention receives a received signal. input Up serial signal Terminal And the transmission signal output Down serial signal Terminal When, Unit presence / absence voltage supply terminal to which a voltage according to the presence / absence of a connected unit is supplied, and a suppression voltage output terminal that outputs a voltage according to the operation mode A connection cable for connecting between a mobile phone terminal device and an information processing device of a personal digital cellular (PDC) telephone system having a serial interface, Wiring that connects the suppression voltage output terminal and the downstream serial signal terminal with the unit presence / absence voltage supply terminal open or in a high impedance state It is characterized by having.
[0026]
DETAILED DESCRIPTION OF THE INVENTION
The present invention can be applied to an information processing system using a plurality of mobile phone terminal devices in a mobile communication system of a personal digital cellular (PDC) system, for example.
[0027]
(Constitution)
An information processing system according to an embodiment of the present invention includes a plurality of PDC-type mobile phone terminal devices (hereinafter simply referred to as mobile phone terminal devices) mobile phone terminal devices 10A and 10B, as shown in FIG. And a connection cable 20 for connecting between serial interfaces of so-called PDC common specifications provided in the mobile phone terminal devices 10A and 10B.
[0028]
The mobile phone terminal device 10A (10B) can perform voice communication with a voice terminal such as another mobile phone terminal device via a PDC base station, an exchange, or the like (not shown). ing. The mobile phone terminal 10A (10B) is further connected to a gateway device, a network device (not shown) such as the Internet, a server device such as an HTTP (Hyper Text Transfer Protocol) server, a mail server, and other mobile phone terminals. Data communication with an information processing device such as a device can be performed.
[0029]
The mobile phone terminal device 10A (10B) includes a transmission / reception unit 11 that performs wireless communication with a base station via an antenna 11A, a display unit 12 having a display screen, and display control that controls display on the display unit 12. Unit 13, an operation key 14 for inputting an instruction from the user, an input control unit 15 for controlling an input from the operation key 14, an MPU 16 for controlling the operation of the entire mobile phone terminal device, and the MPU 16 A memory 17 for storing a program to be executed, a serial control unit 18 for generating and decoding a serial signal to be input / output to / from an external device, and a serial input / output unit 19 for converting the level of the serial signal. ing.
[0030]
The MPU 16 executes, for example, a program stored in the memory 17 to execute a control of the transmission / reception unit 11 and the like, and a script execution unit 16B that executes a script held in the script holding unit 17A. And the function of Web browser 16E etc. which utilize the content etc. which are provided from the above-mentioned HTTP server etc. are realized.
[0031]
The communication control unit 16A controls communication with the base station via the transmission / reception unit 11 and communication with external devices such as a modem device and a memory management device via the serial control unit 18 and the serial input / output unit 19. . The communication control unit 16A is realized by the MPU 16 executing a communication processing program held in the memory 17, for example.
[0032]
The script execution unit 16B executes a program (script) written in an object-oriented programming language that does not depend on the platform. For example, the script execution unit 16B executes a script compliant with Java (registered trademark) -ME [Micro Edition]. Can be configured. The script to be executed is not particularly limited to this example, and may be a script written in another language. Similarly to the communication control unit 16A, the script execution unit 16B is realized by the MPU 16 executing the script processing program.
[0033]
The functions of the script execution unit 16B define, for example, a basic library, a configuration that defines a script execution environment for executing a script using the library, and a processing content that can be executed on the configuration. Defined by profile. In this embodiment, CLDC (Connected Limited Device Configuration), for example, is adopted as a configuration (Configuration), and a procedure for serial communication with an external device is defined by expanding, for example, MIDP (Mobile Information Device Profile) as a profile. The specification is adopted.
[0034]
Scripts such as input from operation keys 14, display on display unit 12, operation control processing for serial control unit 18, serial input / output unit 19, etc., script syntax interpretation, operation control, etc. Execution control processing and the like are implemented as the script processing program described above.
[0035]
In addition, the script execution unit 16B can perform serial communication with external devices such as other mobile phone terminal devices and information processing devices via the serial control unit 18 and the serial input / output unit 19. .
[0036]
In order to perform serial communication with such an external device, the script execution unit 16B analyzes a script analysis unit 16C that analyzes whether the script to be executed requires serial communication, and a script analysis unit 16C. Are provided with a serial state holding unit 16D for holding the analysis result of the above, a serial control unit 18, an operation control unit for the serial input / output unit 19, and the like. These processing functions are implemented in the above-described script processing program, for example.
[0037]
In addition to the above-described communication processing program, script processing program, and the like, the memory 17 stores data indicating, for example, a telephone number list and an operation mode used by the communication processing program. The memory 17 is provided with a script holding unit 17A that holds a script that can be executed by the script execution unit 16B. The script holding unit 17A can store a plurality of scripts, for example, and each script is stored in each of the areas 17AA, 17AB,. Each script is acquired by the Web browser 16E, for example, from the above-described HTTP server or the like via the communication control unit 16A and the transmission / reception unit 11, and stored in each of the areas 17AA and 17AB.
[0038]
As shown in FIG. 2, for example, the script stored in each of the areas 17AA and 17AB is jad (Java (registered trademark)) indicating the version of the script, the creator of the script, the address of the data section such as URL (Unified Resource Locator), and the like. ) Descriptor file) etc. header part (ABCD.jad, EFGH.jad) that contains information about the script, and the main body of the script, image, audio, etc. used when executing the script are compressed and encoded together (Java (registered trademark) archive file) and other data parts (ABCD.jar, EFGH.jar).
[0039]
In the header part, for example, as shown in FIG. 3, the script body (MIDlet-Version), script creator (MIDlet-Vendor), data part address (MIDlet-Jar-URL), etc. In addition, information indicating whether serial communication is required (for example, in the above example, serial attribute: MIDlet-Serial) is included.
[0040]
This serial attribute has a value of “Y” for a script that requires serial communication (MIDlet-Serial: Y), and a value of “N” for a script that does not require serial communication. (MIDlet-Serial: N). If this serial attribute is not provided, the script execution unit 16B determines that the script does not require serial communication.
[0041]
For example, when the script to be executed requires serial communication (serial mode), the script analysis unit 16C of the script execution unit 16B holds “1” in the serial state holding unit 16D. In cases other than the serial mode, such as when serial communication is not required (non-serial mode), “0” is held in the serial state holding unit 16D.
[0042]
The serial input / output unit 19 includes, for example, a connector 19A having a shape as shown in FIG. This connector 19A has two high frequency terminals a1, a2 and 16 signal terminals c1, c2,..., C16. In FIG. 1 described above, only the terminals c1 to c16 are shown.
[0043]
As shown in FIG. 5, for example, as shown in FIG. 5, the signals of the terminals c1 to c16 are connected to the ground voltage (serial signal ground), the signal received by the mobile phone terminal device (uplink serial signal), and the mobile phone terminal device Signal to be transmitted (downward serial signal), signal to detect the device connected to the connector (unit presence / absence), control signal from the connected device (portable unit operation unit control signals 1 and 2), power source of external device (unit Power source).
[0044]
The serial control unit 18 is a part that controls signals input / output via the serial input / output unit 19, and the serial control unit 18 includes the above-mentioned PDC common functions such as call control from the communication control unit 16A or memory copy. A serial signal defined by the specification and a serial signal by a script executed by the script execution unit 16B are supplied.
[0045]
When the value of the serial state holding unit 16D is “0”, the serial control unit 18 connects the input / output of the communication control unit 16A to the serial input / output unit 19, and the value of the serial state holding unit 16D is “1”. In the serial mode, the input / output of the script execution unit 16B is connected to the serial input / output unit 19.
[0046]
Further, the serial control unit 18 opens the terminal c15 when the value of the serial state holding unit 16D is “1”. Further, when the serial control unit 18 detects the connection of an external device such as a modem device, the serial control unit 18 opens the terminal c15 according to the above-described PDC common specification. In other than these states, the serial control unit 18 brings the terminal c15 to a low level.
[0047]
Incidentally, at both ends of the connection cable 20, connectors 21A and 21B that can be connected to the connector 19A shown in FIG. 4 are provided as shown in FIG. Each connector 21A is provided with terminals d1 to d16 that can be connected to the terminals c1 to c16 of the connectors 19A and 19B.
[0048]
The connection cable 20 includes wiring (signal lines) for connecting the terminals d7 and d6 of one connector 21A to the terminals d6 and d7 of the other connector 21B, and ground terminals of the connectors 21A and 21B. Wiring (grounding wire) for connecting (terminals d1, d9) is provided. When the mobile phone terminal device 10A and the mobile phone terminal device 10B are connected by the connection cable 20, the terminals d6 and d7 of the connectors 21A and 21B are connected to the terminals c6 and c7 of the connector 19A, and the mobile phone terminal device 10A. And the mobile phone terminal device 10B can perform serial communication via the signal line and the ground line.
[0049]
Further, the connection cable 20 is provided with serial signal suppression units (suppression means) 22A and 22B that can suppress the downlink serial signal by the control from the serial control unit 18 described above. These serial signal suppression units 22A and 22B connect the terminals d7 and d15 of the connectors 21A and 21B, respectively.
[0050]
In the connection cable 20, the terminals d2 to d5, the terminal d8, the terminals d10 to d14, and the terminal d16 are always open or have a high impedance.
[0051]
FIG. 6 is a conceptual diagram showing a part of the configuration of the serial input / output unit 19 and the connection cable 20 of the mobile phone terminal device 10A and the mobile phone terminal device 10B.
[0052]
The collector of the transistor Tr1 is connected to the terminal c15 of the connector 19A through the resistor R1. The collector of the transistor Tr2 is connected to the terminal c7 via a resistor R1 on the order of 100 ohms. The control outputs of the serial control unit 18 are connected to the bases of the transistors Tr1 and Tr2, respectively. The emitters of these transistors Tr1 and Tr2 are connected to the ground potential (wiring connected to the terminals c1 and c9). These terminals c7 and c15 are connected to the terminal c6 of the other connector 19A through the signal line described above.
[0053]
Further, the terminal 6 of the connector 19A is connected to the power supply voltage (+ V) via a resistor R2 on the order of a diode D1 for circuit protection, approximately 10k ohms. The voltage at the point x between the diode D1 and the resistor R2 is supplied to the serial control unit 18 via the buffer amplifier amp (gain˜1). That is, the open collector outputs of the terminals c7 and c15 are so-called wired OR connected by the serial signal suppression unit 22A, and are in a state as shown in FIG. 7, for example. In this state, when either the transistor Tr1 or the transistor Tr2 is turned on, the voltage at the point x becomes a low level.
[0054]
As described above, the serial control unit 18 opens the terminal c15 (or high impedance) when the value of the serial state holding unit 16D is “1”. In this state, for example, as shown in FIG. 8A, the voltage at the above-mentioned point x changes between the low level and the high level by turning on / off the transistor Tr2, that is, the serial signal from the serial control unit 18 is The terminal c7 is supplied to the terminal c6 of the other serial input / output unit 19 via the terminal c7.
[0055]
On the other hand, when the value of the serial state holding unit 16D is “0”, the terminal c15 is set to the low level. In this state, the transistor Tr1 is always on. For example, as shown in FIG. 8B, the voltage at the point x is low regardless of the state of the transistor Tr2, and the serial signal from the serial control unit 18 is Suppressed state.
[0056]
The serial control unit 18 opens the terminal c15 according to the above-described PDC common specification when detecting the connection of an external device such as a modem device. Connection of an external device such as a modem device is detected by signals from terminals c12, c13, and c14. In the connection cable 20, terminals d12 to d14 connected to these terminals c12 to c14 are opened or set to high impedance. ing. For this reason, in a state in which the mobile phone terminal device 10A and the mobile phone terminal device 10B are connected via the connection cable 20, in any of the terminal devices 10A and 10B, connection of external devices is performed by signals from the terminals c12, c13, and c14. It will not be detected.
[0057]
That is, in this information processing system, when the mobile phone terminal device 10A and the mobile phone terminal device 10B are connected by the connection cable 20, serial communication can be performed between the mobile phone terminal devices only in the above-described serial mode. It becomes a state.
[0058]
(Operation)
When the user instructs execution of the script held in the script holding unit 17A, the MPU 16 first shows a list of scripts held in the respective areas 17AA, 17AB,... In the script holding unit 17A. Image data is created, and a list of scripts is displayed on the display unit 12, for example, as shown in FIG.
[0059]
When the execution of a specific script is instructed by the user, the script execution unit 16B reads the instructed script from the script holding unit 17A. The script analysis unit 16C determines whether or not the read script requires serial communication, and stores information indicating the determination result in the serial state storage unit 16D.
[0060]
In this determination processing, as shown in FIG. 8, for example, the script analysis unit 16C first determines whether or not the serial attribute (MIDlet-Serial) is included in the jad portion of the script instructed to be executed ( S1).
[0061]
If the serial attribute is not included in the jad, the script analysis unit 16C determines whether or not the current state is the serial mode (S5), and the value of the serial mode, that is, the current serial state holding unit 16D is “ If it is “1”, the value of the serial state holding unit 16D is set to “0” to shift to the non-serial mode (S6). If it is not the serial mode, the value of the serial state holding unit 16D is “0”, and is left as it is. Thus, the operation of the serial control unit 18 described above suppresses the serial signal from the communication control unit 16A so that it is not output. For example, even if there is an incoming call to the mobile phone terminal device, the signal for controlling the call Is not output via the connector 19A.
[0062]
On the other hand, if the serial attribute is included in the jad, the script analysis unit 16C determines whether or not the serial attribute is “Y” (S2), and if the serial attribute is not “Y”. The processes after S5 described above are executed.
[0063]
When the serial attribute is “Y”, the script analysis unit 16C determines whether or not the current state is the serial mode (S3), and the value of the non-serial mode, that is, the current serial state holding unit 16D is determined. If it is not “1”, the value of the serial state holding unit 16D is set to “1” to shift to the serial mode (S4). In the case of the serial mode, the value of the serial state holding unit 16D is “0”, and is left as it is. As a result, the operation of the serial control unit 18 allows the signal from the script execution unit 16B to be input / output via the serial input / output unit 19, and serial communication between the mobile phone terminal devices 10A and 10B is possible. It becomes a state.
[0064]
After executing such determination processing, the script execution unit 16B executes the script selected by the user. If the selected script uses serial communication, serial communication is performed between the mobile phone terminal devices 10A and 10B.
[0065]
(effect)
In the conventional serial cross cable, for example, as shown in FIG. 10, in addition to the wiring of the connection cable 20, wiring for connecting the terminals d9 and d12 of the connectors 21A and 21B in order to detect the presence / absence of connection of an external device. And wiring which connects between terminal d12, d13 of each connector 21A, 21B is provided.
[0066]
When such a serial cross cable is connected to the mobile phone terminal device 10A (or mobile phone terminal device 10B), the terminal d12 of the connector 19A becomes low level due to the wiring between the terminal d9 and the terminal d12, and the serial control unit 18 The connection of the device is detected, and in accordance with the PDC common specification, an operation such as copying the memory of the mobile phone terminal device determined by the PDC common specification is started.
[0067]
On the other hand, in the connection cable 20 configured as described above, since there is no wiring between the terminal d9 and the terminal d12, even when the connection cable 20 is connected to the mobile phone terminal device 10A (or the mobile phone terminal device 10B), Since the serial control unit 18 does not detect the connection of the external device, the script execution unit 16B can perform serial communication.
[0068]
Further, in the conventional serial cross cable, as shown in FIG. 10 described above, the wiring between the terminal d15 and the terminal d7 is not provided. Therefore, when the mobile phone terminal devices 10A and 10B are connected with a conventional serial cross cable, for example, as shown in FIG. 11, the on / off state of Tr2 does not depend on the on / off state of Tr1 of the serial input / output unit 19. When the voltage is turned off, the voltage at the point x can change, that is, the serial signal from the communication control unit 16A can be supplied to the other serial input / output unit 19 as it is. In such a state, when an incoming call is received at one mobile phone terminal device, a serial signal corresponding to this call is supplied to the other mobile phone terminal device, and a call is made to the caller side of the call. It will be in a state that can be.
[0069]
On the other hand, in the connection cable 20, since the terminal d15 and the terminal d7 are connected by the serial signal suppression units 22A and 22B, in the state where the mobile phone terminal devices 10A and 10B are connected by the connection cable 20, the above-described serial Outside the mode, the serial signal is not supplied to the other serial input / output unit 19. Therefore, even if one mobile phone terminal apparatus receives an incoming call in such a state, a serial signal corresponding to the call is not supplied to the other mobile phone terminal apparatus, and the call is made to the caller side. No operation such as a call is performed.
[0070]
Therefore, this information processing system can contribute to the reliability of information processing using a plurality of mobile phone terminal devices connected via a serial interface.
[0071]
(Modification)
In the above-described embodiment, the information processing system in which a plurality of mobile phone terminal devices 10A and 10B are connected by the connection cable 20 has been described. However, the mobile phone terminal device 10A and an information processing device such as a personal computer or a PDA (personal digital assistant) Can be connected to form an information processing system.
[0072]
In this case, the connection cable 40 for connecting the mobile phone terminal device 10A and the information processing device is, for example, FIG. 2 It can be configured as shown in FIG.
[0073]
One end of the connection cable 40 is provided with a connector 41A similar to the connector 21A provided at one end of the connection cable 20 in FIG. 1, and the terminal of the connector 41A is similar to the serial signal suppression unit 22A. A serial signal suppression unit 42A is provided between d7 and the terminal d15.
[0074]
A connector 41B for connecting to the information processing apparatus is provided at the other end of the connection cable 40. The connector 41B is provided with a terminal TXD to which a transmission signal on the information processing apparatus side is supplied, a terminal RXD to which a reception signal is supplied, and a terminal GND connected to a ground potential.
[0075]
When the connector 41A of the connection cable 40 configured in this way is connected to the mobile phone terminal device 10A and the connector 41B is connected to the information processing device, the operation on the mobile phone terminal device 10A side is the same as in the above-described embodiment. become. On the other hand, on the information processing device side, processing of a serial interface transmission / reception signal and processing corresponding to a script operating on the mobile phone terminal device 10A side are executed by a predetermined control program, and between the script execution unit 16B The serial communication can be performed.
[0076]
Thereby, it is possible to contribute to the certainty of information processing using the mobile phone terminal device and the information processing device connected via the serial interface.
[0077]
When the level of the serial signal on the mobile phone terminal device 10A side and the level of the signal on the information processing device side are different, the connection cable 40 is provided with a level conversion unit for converting the signal level, or the signal level is changed. It is necessary to connect the mobile phone terminal device 10A and the information processing device via a level conversion device for conversion.
[0078]
【The invention's effect】
In the present invention, the received signal is input Up serial signal Terminal And the transmission signal output Down serial signal Terminal When, Unit presence / absence voltage supply terminal to which a voltage according to the presence / absence of a connected unit is supplied, and a suppression voltage output terminal that outputs a voltage according to the operation mode Have a serial interface with Carrying A mobile phone terminal device and other information processing devices Wiring that connects the suppression voltage output terminal and the downstream serial signal terminal with the unit presence / absence voltage supply terminal open or in a high impedance state Via connecting cable Contact By continuing, it is possible to contribute to the certainty of information processing using the mobile phone terminal device and the information processing device connected via the serial interface.
[Brief description of the drawings]
FIG. 1 is a diagram showing a configuration of an information processing system according to an embodiment of the present invention.
FIG. 2 is a diagram showing an example of a script stored in a script holding unit of a mobile phone terminal device constituting the information processing system.
FIG. 3 is a diagram illustrating an example of a format of a header part of a script stored in an area in the script holding unit.
FIG. 4 is a view showing an appearance of a connector constituting the mobile phone terminal device.
FIG. 5 is a diagram showing signals at each contact of the connector.
FIG. 6 is a schematic diagram illustrating a configuration example of a part of a connection cable for connecting the mobile phone terminal devices and a serial input / output unit of each mobile phone terminal device;
FIG. 7 is a diagram showing an outline of connection between serial control units constituting the mobile phone terminal device;
FIG. 8 is a circuit diagram showing an outline of operations between the serial control units.
FIG. 9 is a flowchart showing a serial communication control process by the script execution unit.
FIG. 10 is a diagram showing wiring of a conventional serial cross cable.
FIG. 11 is a diagram showing an outline of connection between control units when a conventional serial cross cable is used.
FIG. 12 is a diagram showing wiring of a connection cable according to another embodiment of the present invention.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 10A, 10B ... Cell-phone terminal device, 11 ... Transmission / reception part, 12 ... Display part, 13 ... Display control part, 14 ... Operation key, 15 ... Input control part, 16 ... MPU, 16B ... Script execution part, 16C ... Script analysis 16D: Serial state holding unit, 16E: Web browser, 17 ... Memory, 17A ... Script holding unit, 18 ... Serial control unit, 19 ... Serial input / output unit, 19A ... Connector, 20 ... Connection cable, 21A, 21B ... Connector, 22A, 22B ... Serial signal suppression unit

Claims (5)

An up serial signal terminal for inputting a reception signal, a down serial signal terminal for outputting a transmission signal, a unit presence / absence voltage supply terminal to which a voltage according to the presence / absence of a connected unit is supplied, and a voltage according to an operation mode A mobile phone terminal device having a serial interface having a suppression voltage output terminal for outputting ;
A connection cable having a wiring for connecting the suppression voltage output terminal and the downlink serial signal terminal, with the unit presence / absence voltage supply terminal of the serial interface being open or in a high impedance state ,
An information processing device connected to the mobile phone terminal device via the connection cable ;
In the execution mode (serial mode) using communication through the serial interface, the mobile phone terminal device opens the suppression voltage output terminal or sets the suppression voltage output terminal to a high impedance state, and in other states, the mobile phone terminal device is connected to the suppression voltage output terminal. An information processing system comprising suppression means for outputting a voltage for masking a signal . The mobile phone terminal device
And script execution means to be able to run the script in front of carboxymethyl Riarumo de,
First serial communication control means for controlling transmission and reception of serial signals of PDC standard specifications;
Second serial communication control means for controlling transmission and reception of serial signals when the script execution means is in serial mode;
When the front Symbol script executing means executes the script in serial mode, the second performs serial communication by the serial signal from the serial communication control means, except when running the script in the serial mode, the first serial communications 2. The information processing system according to claim 1, further comprising communication control means for performing serial communication by a serial signal from the control means. An up serial signal terminal for inputting a reception signal, a down serial signal terminal for outputting a transmission signal, a unit presence / absence voltage supply terminal to which a voltage according to the presence / absence of a connected unit is supplied, and a voltage according to an operation mode A serial interface having a suppression voltage output terminal for outputting ;
Mode determining means for determining whether or not the execution mode (serial mode) uses communication via the serial interface according to identification information defined in the script, and the script can be executed in the serial mode Script execution means;
According to the determination result by the mode determination means, in the serial mode, the suppression voltage output terminal is opened or in a high impedance state, and in other states, a voltage for masking the down serial signal is output to the suppression voltage output terminal A mobile phone terminal device. First serial communication control means for controlling transmission and reception of serial signals of PDC standard specifications;
Second serial communication control means for controlling transmission and reception of serial signals when the script execution means is in serial mode;
When the script execution means executes a script in the serial mode, serial communication is performed by a serial signal from the second serial communication control means, and the first serial communication control is performed except when the script is executed in the serial mode. 4. The mobile phone terminal device according to claim 3, further comprising communication control means for performing serial communication by means of a serial signal from the means . An up serial signal terminal for inputting a reception signal, a down serial signal terminal for outputting a transmission signal, a unit presence / absence voltage supply terminal to which a voltage according to the presence / absence of a connected unit is supplied, and a voltage according to an operation mode A connection cable for connecting between a mobile phone terminal device and an information processing device of a personal digital cellular (PDC) telephone system having a serial interface having a suppression voltage output terminal for outputting ,
A connection cable comprising: a unit presence / absence voltage supply terminal of the serial interface being opened or in a high impedance state, and a wiring connecting the suppression voltage output terminal and the downstream serial signal terminal .

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