JP3430989B2 - Multi-function processing unit - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a multi-function processing apparatus that performs communication processing for communicating with the outside via a communication device and various other processing.

[0002]

2. Description of the Related Art Conventionally, GPS (Global Positioning)
There is a vehicle-mounted navigation device that uses the System). This navigation device receives radio waves for position detection from a plurality of communication satellites for positioning, calculates the reception position,
By displaying a map indicating the reception position on the image device, the driver or the like can grasp the current position of the vehicle in real time.

In recent years, this navigation device has been
With the development of (Vehicle Information and Communication System), in order to output the voice based on the road traffic information received from the devices for VICS such as optical beacons, and to display the voice such as directions. A speaker having a function for using a mobile phone in a hands-free manner using a speaker provided in is widely used. Furthermore, with the recent spread of mobile phones capable of searching Internet information, those equipped with a function of searching Internet information when the mobile phone is connected to a navigation device have begun to spread. There is.

As described above, in recent years, navigation devices have become more multifunctional, and along with this, the amount of information to be processed by the navigation device is rapidly increasing. Therefore, in a multifunctional processing device such as this navigation device, an ASIC (Appl
ication Specific IC: ICs for specific use have come to be used.

Generally, as shown in FIG. 7, a mobile phone is equipped with an external input / output terminal for inputting / outputting voice information and Internet information to / from an external device such as a navigation device. However, mobile phones are
A plurality of types of communication methods such as the CDMA system (hereinafter referred to as "communication mode") are adopted, and the types and numbers of signals input / output through the external input / output terminals are different depending on the difference of the communication modes.

Therefore, in the conventional navigation device, when mobile phones having different communication modes can be connected, as shown in FIG. 8, an interface unit is installed for each communication mode, and an ASIC port is provided for each interface unit. I was allocating only the required number.

The number of ports assigned to each interface section is determined according to the number of pins installed in the interface section. In addition, the normal pin is installed in the connector, which is a portion of the interface portion to which a mobile phone, a communication cable, or the like is physically connected.

[0008]

However, there is a problem that as the navigation device becomes more multifunctional and the number of ports installed in the ASIC increases in the future, the ASIC becomes large in scale, and as a result, the navigation device itself becomes large. .

Further, since the connector of each interface unit is usually installed on the "front" of the navigation device in which the operating device, the image device, etc. are arranged, in the case of the conventional navigation device, a plurality of connectors are used. There is a problem that the connector is installed on the “front”, the mounting space for mounting the operation device and the like is narrowed, and in addition, the appearance of the navigation device is deteriorated.

Therefore, as shown in FIG. 9, a recent navigation device (manufactured by Toyota Motor Corporation, product name MONET, etc.) has the same signal (for example, control signal 1) common to mobile phones having different communication modes. An interface unit is provided so that a single connector can be connected to a plurality of mobile phones having different communication methods by inputting and outputting by pins and inputting and outputting only different signals by individual pins. Hereinafter, such a navigation device will be referred to as a common pin navigation device. The same pin as used herein means the first pin, the third pin, the fourth pin, the fifth pin, the twelfth pin, and the first pin in FIG.
The 4th pin, the 15th pin, the 16th pin, and the 21st pin.

In a conventional navigation device, a plurality of connectors are installed "on the front", and the area for installing the connectors is, for example, 14 pins for a PDC type mobile phone connector and 18 pins for a CDMA system. Since it was provided, a total area of 32 pins was required, but in the common pin type navigation device, since 9 pins are shared, the number of pins is reduced to 23, and the total area for installing the connector is reduced. Could be made smaller. In addition, the common pin type navigation device has not only the area required for installing the connector but also only one connector, so that the appearance can be improved. Further, in the common pin type navigation device, since a common signal is input and output through the same pin, the number of required ports is reduced, so that it is possible to prevent the ASIC from becoming large in scale, and the navigation device is further improved. It was possible to make it compact.

However, even if a method of inputting and outputting a common signal at the same port as in the common pin type navigation device is adopted, as new functions are added to the navigation device in the future, it will be assigned to one function. AS
Since the number of IC ports is further restricted and the area for installing a connector is further restricted due to the increase in functions, it is necessary to further reduce the number of pins required for connecting a mobile phone. .

Therefore, an object of the present invention is to provide a multi-function processing device capable of connecting a plurality of types of mobile phones having different communication modes with a minimum number of pins.

[0014]

According to another aspect of the present invention, there is provided a multi-functional processing apparatus, wherein a part of an external signal input / output via an external input / output terminal is changed depending on a communication mode. Any of the different communication devices,
It has an interface part connectable via an external input / output terminal and an identification means for identifying the communication mode, and is connected to the interface part via an external communication device operating in the communication mode identified by the identification means. It is possible to communicate with.

Of these, the interface section cannot be directly connected via an external input / output terminal, so that it includes one that is connected to a communication device using a dedicated cable and one that is directly connected to a communication device via an external input terminal. . Further, the communication device is a so-called mobile phone and PH.
This includes all devices that can communicate, such as S and general wireless devices.

In the multi-function processing device according to claim 1, the interface section inputs or outputs a common pin for inputting or outputting a signal common between the communication modes and a signal different between the communication modes. The common pin and the different pin are shared in each communication mode, and the signal processing for the input signal or the output signal via the different pin is switched according to the identification result by the identifying means.

Therefore, when the multi-function processing device according to the first aspect of the present invention is used, different signals can be generated as compared with the conventional multi-function processing device in which only common signals are input or output through the same common pin. Since the input or output is performed via the same different pin, the number of pins installed in the interface section can be reduced. As a result, this claim 1
In the described multifunctional processing device, the area required for installing the pins can be made smaller, so that the area for installing the operating device for operating the multifunctional processing device such as the navigation device can be increased. .

Further, since the number of pins can be reduced by using the multi-function processing device according to the first aspect of the present invention, the number of ports of the central processing unit such as an ASIC required for connecting a mobile phone can be reduced to the conventional one. It can be reduced compared to the multi-function processing device. Therefore, when the multi-function processing device according to claim 1 is used, more functions can be added by using unused ports, and the central control device such as ASIC can be increased in scale. Since this can be prevented, the multifunctional processing device can be made compact as a whole.

The multifunctional processing device includes all devices having a plurality of functions capable of communicating with a communication device, such as a vehicle-mounted navigation device and an electronic notebook. Next, as in the multi-function processing device according to claim 2, the identification means comprises an identification pin provided in the interface section and for inputting an identification signal for identifying the communication mode, and the identification input from the identification pin. Signal processing may be switched according to the signal. According to this structure, the identification unit can be easily created by combining the common pin and the different pin.

As in the multi-function processing device according to the third aspect, it is desirable that the different pins are shared by signals having the same input / output type. In this way, even if the identification means makes an error, the multi-function processing device will not be damaged.

[0021]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a block diagram showing the overall configuration of a navigation device to which the present invention is applied.

As shown in FIG. 1, the navigation device 1 of the present embodiment has a position detector 1 for detecting the current position of the vehicle.
2, a map data input device 14 for inputting map data stored in a CD-ROM, an operation switch group 16 for inputting various commands to the device 1, and a VICS.
(Vehicle Information and Communication System), an interface unit 40 for inputting road traffic information transmitted from a mobile phone or the like, information from the Internet, etc., and an external memory 20 backed up by a power source (not shown). , A display device 22 for displaying a map, the current position of the vehicle, and other various information, a voice generating device 24 for outputting voices such as various operating procedure guidance and route guidance, and a remote control terminal R.
A remote control sensor 26 for inputting various commands to the device 1 transmitted from (hereinafter referred to as "remote control R")
And various kinds of processing are executed according to inputs from the position detector 12, the map data input device 14, the operation switch group 16, the interface unit 40, and the remote controller sensor 26, and various kinds of information are stored in the external memory 20. And a control circuit 28 that executes a process of outputting various information from the display device 22 and controls the sound generation device 24.

Here, the position detector 12 is a GPS (Glob
The radio wave transmitted from the artificial satellite for the al Positioning System) is received via the GPS antenna,
GPS receiver 12a for detecting speed and the like, and gyroscope 12 for detecting the magnitude of rotational motion applied to the vehicle
b, a distance sensor 12c including a vehicle speed sensor and a wheel sensor for detecting the traveling distance of the vehicle, and a geomagnetic sensor 12d for detecting an absolute azimuth based on the geomagnetism. Then, these respective sensors and the like 12a to 12d
Are configured to be used while complementing each other because each has an error of different nature. Depending on the accuracy, only a part of the sensors 12a to 12d described above may be used, or the steering angle of the vehicle obtained from the rotation difference between the left and right steered wheels may be accumulated to determine the direction. A desired sensor or the like may be used.

The map data input device 14 is a device for inputting various data including map data representing road connections, so-called map matching data for improving position detection accuracy, and the like. From data amount CD-
A ROM is generally used, but a medium such as a memory card is used.

The operation switch group 16 is a touch switch configured integrally with the display device 22 and set on the display screen, a mechanical key switch provided around the display device 22, or the like. The remote controller R is a mechanical rotary switch or key switch attached to a handle or the like.

The control circuit 28 includes a CPU, ROM, RAM
ASIC (Application Specific
The present position of the vehicle based on each detection signal from the position detector 12 and the current position read via the map data input device 14 are mainly composed of a well-known microcomputer composed of IC: specific use IC). Various processing such as so-called navigation processing such as processing for displaying a map or the like in the vicinity on the display screen, setting a route to be traveled on the map, and performing route guidance according to the set route is executed.

Next, a mobile phone connected to the interface section 40 of the navigation device 1 of this embodiment will be described. Here, FIG. 2 is an explanatory view for explaining how to connect the mobile phone to the navigation device 1, and FIG.
FIG. 4 is an explanatory diagram for explaining the types of signals input / output at the external input / output terminals of each mobile phone, the numbers of the signals, and the input / output directions of the signals at the external input / output terminals.

Since each signal is publicly known by each manufacturer who makes a mobile phone in a pamphlet or the like and is well known, its detailed description will be omitted. In addition, the display of “ON” and “OUT” in the rightmost column of FIG. 3 indicates whether each signal from the external input / output terminal of the mobile phone is “input” or “output”. The display is opposite to the direction in which each signal is input to and output from the device 1.

First, the mobile phone used in the navigation device 1 of the present embodiment is a general mobile phone (PDC (Personal Digital Cellular)) mobile phone (hereinafter referred to as "PDC") and CDMA (Code-Division). Mulu
It is a tiple-Access) type mobile phone (hereinafter referred to as "CDMA").

As shown in FIG. 2, these mobile phones are connected to the navigation apparatus 1 via a connector 50 constituting the interface section 40, using a dedicated communication cable for each mobile phone. Of these, "PDC" is shown in Figure 3.
As shown in (a), 14 types of signals are input / output from the external input / output terminal.

Of these signals, "sending voice / TCH
The six types of signals, "transmission", "control signal 1", "upstream serial", "unit presence / absence", "control signal 2", and "for auxiliary charging" are input from the external input / output terminals. The section 40 requires six output pins for outputting these input signals.

Further, since five types of signals of "TCH clock", "TCH frame", "received voice / TCH reception", "downstream serial" and "unit power supply control" are output from the external input / output terminals, Interface section 40
Has 5 pins for inputting these output signals.
I need a book.

Further, "sending / receiving signal GND" for "transmitted voice" and "received voice", "serial signal GND" for "upstream serial signal", "serial signal GND" for "downstream serial signal". Since three types of grounding are required, three grounding pins are required.

Therefore, when the "PDC" is connected to the navigation device 1, the interface section 40 requires a total of 14 pins, 5 for input, 6 for output, and 3 for grounding. On the other hand, in the "CDMA", 18 kinds of signals are input / output from the external input / output terminals as shown in FIG.

Among these signals, "transmission voice", "control signal 1", "upstream serial", "TCH transmission", "control signal 2", "CD", "downstream data control", "CHA".
Since eight kinds of signals of "G" are inputted from the external input / output terminals, the interface section 40 needs eight output pins for outputting the input signals.

In addition, "CE", "uplink data control",
"CC", "Received voice", "Downlink serial", "TCH"
Since seven types of signals for the purposes of "reception" and "CF" are output from the external input / output terminals, the interface section 40 requires seven input pins for inputting these output signals.

Furthermore, "GN" for "serial signal"
Since two types of grounding, "D" and "GND" for "TCH signal", are required, two grounding pins are required, and whether the mobile phone connected to the interface unit 40 is "CDMA". One identification pin for identifying whether or not it is necessary.

Therefore, when the "CDMA" is connected to the navigation device 1, the interface section 40 has a total of 18 pins including 7 for input, 8 for output, 2 for grounding and 1 for identification. is necessary. Next, the pins installed in the connector 50 that configures the interface section 40 of the navigation device 1 of the present embodiment and the signals that are input / output through the pins will be described.

Here, FIG. 4 is an explanatory diagram for explaining the relationship between signals input to and output from the navigation device 1 of this embodiment and pins. In FIG. 4, the numbers shown in the leftmost column are pin numbers. In addition, the display of “ON” and “OUT” in the rightmost column of FIG. 4 indicates whether each signal is “input” or “output” from the external input / output terminal of the mobile phone. 1, the display is opposite to the direction in which each signal is input / output.

In the navigation device 1 of this embodiment, of the pins used for the same purpose (input, output, ground),
4 input pins, 6 output pins, 2 ground pins are shared, and 6 "CDMA" pins are used to input / output signals individually for each mobile phone, "PDC" is 2
It is a book.

Specifically, in the navigation device of this embodiment, as shown in FIG. 4, "sending voice / voice" of "PDC" is transmitted.
A first pin for outputting a signal for "transmission voice" of "TCH transmission" and "CDMA", a third pin for outputting "control signal 1", hereinafter, a fourth pin, a twelfth pin, a thirteenth pin, Pin for each output of the 19th pin and "TC" of "PDC"
The 7th pin for "CE" of "H clock" and "CDMA", the 9th pin, 11th pin, 14th pin for each input, 5th pin, 15th pin for grounding It is shared.

Of these, the first pin, the third pin, the fourth pin, the fifth pin, the eleventh pin, the thirteenth pin, the fourteenth pin,
The 15th and 19th pins are hereinafter referred to as common pins because the same type of signals are input / output or grounded. Further, since different types of signals are input and output to and from the seventh pin, ninth pin, and twelfth pin, they will be referred to as different pins hereinafter.

The twentieth pin is a pin for identifying whether or not the "CDMA" type mobile phone is connected to the interface section 40, and is hereinafter referred to as an identification pin. This identification pin 20 is used in combination with the second pin, and the "PD
S ”is connected to the interface section 40, the second pin is grounded and the twentieth pin is released.
The potential of the 0th pin is set to the low level, and when the “CDMA” is connected, the 2nd pin is released and the 20th pin is closed, so that the potential of the 20th pin is set to the high level. Therefore, the ASIC 28 detects "CD" by detecting whether the potential of the 20th pin is at the High level or not.
It is identified whether or not "MA" is connected to the interface unit 40.

Therefore, the navigation device 1 of this embodiment
The pins installed on the connector 50 of
There are 2 pins, 6 pins unique to “CDMA”, and 2 pins unique to “PDC”, so a total of 20 pins. In this embodiment, the TCDMA reception signal of "CDMA" (16th pin) and the unit power supply control signal of PDC (18th pin).
It is configured so that and are output from separate pins for the convenience of signal processing, but it goes without saying that if these signals are output from a common pin, the total number of pins can be 19.

Next, the specific configuration of the navigation device in the interface section 40 portion to which the mobile phone is attached will be described in detail. Here, FIG. 5 is a schematic configuration diagram of the navigation device 1 of the present embodiment. The numbers written on the interface section 40 are the numbers of the pins. In addition, in FIG. 5, the second pin, the fifth pin, and the fifteenth pin
Regarding each grounding pin of the pins and the charging pin of the 19th pin, the second pin is used together with the 20th pin, the 5th pin is combined with the 4th pin, and the 15th pin is combined with the 14th pin.
Pin 9 is an ASIC 28 (see FIG. 5) that constitutes the control circuit 28.
Is omitted since it is not connected to the ASIC.

First, the interface section 40 is provided with an input circuit or an output circuit 42 according to the input / output direction of a signal, as shown in FIG. The input circuit or the output circuit 42 adjusts a difference in data transfer speed and a difference in signal level between the ASIC 28 and the mobile phone, and has a function of a buffer or the like. Since these circuits are generally used, detailed description thereof will be omitted.

Further, the interface section 40 is provided with a voice circuit 44 which also constitutes a part of the voice generating device 24, and the voice circuit 44 converts the input signal into a voice signal or reverse conversion. . Further, when the "PDC" is connected to the interface unit 40 of the present embodiment, either the signal regarding the voice (incoming voice, received voice) or the signal regarding the TCH is output from the first pin and the eleventh pin. Since it is input and output, an audio signal is transmitted between the first and eleventh pins and the audio circuit 44.
The first changeover switch 46 is provided to switch between inputting / outputting to / from the T.4 and inputting / outputting the TCH signal to / from the ASIC 28. The first changeover switch 46 is also directly connected to the ASIC 28, and according to a command from the ASIC 28, the first pin and the 11th pin are connected to the ASIC 28 or the audio circuit 44. By the way, in the first changeover switch 46, if the ASIC 28 determines whether the signal input to the voice circuit 44 is a voice signal or a TCH signal, and the signal input / output by the determination is the TCH signal, the voice circuit The ASIC 28 is switched from the 44 side to the ASIC 28 side, and when the signal is a voice signal, the ASIC 28 is switched to the voice circuit 44 side. The first changeover switch 46 is also connected to the twentieth pin, and the interface section 40 displays “C
When "DMA" is connected, only the audio signal is input / output at the first pin and the eleventh pin, so that it is always switched to the audio circuit 44 side.

Further, the interface unit 40 has a first
AS the TCH signal input / output from the pin and pin 11.
A second changeover switch 48 is provided for switching between inputting / outputting to / from the IC 28 and inputting / outputting the TCH signal input / output from the 6th and 16th pins to / from the ASIC 28. The second changeover switch is also connected to the 20th pin, and when “CDMA” is connected to the interface section 40, the 6th pin and the 16th pin are connected to the ASIC 28 via the input circuit and the output circuit. Is configured. On the other hand, when “CDMA” is not connected to the interface unit 40, it is determined that the PDC is connected, and the first pin and the 11th pin are connected to the ASIC 28.

The control performed by the ASIC 28 of the navigation device configured as described above will be described below. Here, FIG. 6 is a flowchart regarding the control performed by the ASIC 28.

The process shown in FIG. 6 is a determination process (S) for determining whether the device to which the navigation device is connected is connected to a portable telephone of which communication method.
1). First, in this process (S1), first,
Looking at the potential of the pin, the interface section 40 displays “CDM
It is determined whether "A" is connected (S10). In this determination (S10), the power of the navigation device 1 is turned off.
It is always performed during the period N.

Next, if the determination in S10 is affirmative,
CDMA that processes the signal of "CDMA" for the signal input / output from the different pin (7th pin, 9th pin, 12th pin)
The ASIC 28 is operated in the mode (S14). Then, the first changeover switch 46 outputs a signal instructing the changeover so that the first pin and the eleventh pin are connected to the audio circuit.

Next, if the determination in S10 is negative,
The ASIC 28 is operated in the PDC mode in which the signal input / output from the different pin is processed as the "PDC" signal (S1).
2). Then, each processing (S12, S14) is performed when a predetermined condition is satisfied, such as when a signal is not input from a pin (for example, a first pin, a third pin, etc.) to which each signal is input for a predetermined time. After that, the determination of S10 is performed again.

The following effects are obtained by using the navigation device 1 described above. First, in the navigation device 1 of the present embodiment, the interface section 40 has a common pin for inputting or outputting a common signal between mobile phones having different communication methods and a different pin for inputting or outputting a different signal. , Common pins and different pins are shared in each communication mode (CDMA mode, PDC mode),
According to the S10 determination result, the signal processing for the input signal or the output signal via the different pin is switched.

Therefore, using the navigation device 1 of this embodiment, as shown in FIG. 9, is different from the conventional navigation device which inputs or outputs only a common signal through the same common pin. Since the input signal is also input or output through the same different pin, the number of pins installed in the interface section 40 can be reduced. As a result, when the navigation device of the present embodiment is used, the area of the surface of the interface section 40 on which the pins are installed can be made smaller, so that each of the display device 22, the operation switch group 16 and the like included in the navigation device 1 is provided. The installation space of the device can be increased.

Further, since the number of pins of the interface section 40 can be reduced by using the navigation device 1 of this embodiment, the number of ports of the ASIC 28 connected for each pin is compared with that of the conventional navigation device. Can be reduced. Therefore, when the navigation device of the present embodiment is used, it is possible to add more functions by using an unused port, and it is possible to prevent the central control device such as ASIC from increasing in size. The multifunctional processing device can be made compact.

Next, as in the navigation device 1 of the present embodiment, in S10, the interface section 40 is provided with an identification pin for inputting an identification signal for identifying the communication mode, and "CDMA" input from the identification pin. Since the signal processing mode is switched according to the identification signal for identifying whether or not the communication device attached to the interface unit 40 is operated by a simple operation of connecting the external connection terminal to the interface unit 40. The communication mode can be identified by the multi-function processing device.

The different pins may be shared by signals having the same input / output type, as in the navigation device 1 of this embodiment. In this way, even if the identification means makes an error, the multi-function processing device will not be damaged. The ASIC 28 and the identification pin of this embodiment correspond to the identification means of the present invention.

[Brief description of drawings]

FIG. 1 is an explanatory diagram illustrating an overall configuration diagram of a navigation device according to an embodiment.

FIG. 2 is an explanatory diagram for explaining a method of connecting a navigation device and a mobile phone according to the present embodiment.

FIG. 3 is an explanatory diagram for explaining types of signals input / output through an external input / output terminal of a mobile phone and input / output directions of respective signals at the external input / output terminal.

FIG. 4 is an explanatory diagram for explaining the relationship between signals input to and output from the navigation device of this embodiment and pins.

FIG. 5 is a schematic configuration diagram of a navigation device according to the present embodiment.

FIG. 6 is a flowchart of a determination process performed by the ASIC of this embodiment.

FIG. 7 is an explanatory diagram illustrating a configuration of a mobile phone.

FIG. 8 AS incorporated in a navigation device
It is explanatory drawing for demonstrating IC.

FIG. 9 is an explanatory diagram of signals input / output by a navigation device configured so that mobile phones of different communication modes can be connected by one interface unit.

[Explanation of symbols]

1 ... Navigation device, 12 ... Position detector, 12a ...
GPS receiver, 12a ... Sensor, etc., 12b ... Gyroscope, 12c ... Distance sensor, 12d ... Geomagnetic sensor,
14 ... Map data input device, 16 ... Operation switch group, 20
... external memory, 22 ... display device, 24 ... voice generating device,
26 ... Remote sensor, 28 ... Control circuit and ASIC,
40 ... Interface part, 44 ... Voice circuit, 46 ...
First changeover switch, 48 ... Second changeover switch

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Claims (3)

(57) [Claims] 1. An interface in which a part of external signals input / output via an external input / output terminal can be connected via the external input / output terminal to any of a plurality of communication devices that differ depending on the communication mode. And an identification unit that identifies the communication mode, and is capable of communicating with the outside through the communication device that is connected to the interface unit and that operates in the communication mode identified by the identification unit. In the multi-function processing device, the interface unit includes a common pin for inputting or outputting a signal common between the communication modes, and a different pin for inputting or outputting a signal different between the communication modes, The common pin and the different pin are shared in each of the communication modes, and an input signal or a signal via the different pin is shared according to the identification result of the identifying means. Is a multi-function processing device characterized by switching signal processing for output signals. 2. The multi-function processing device according to claim 1, wherein the identification unit includes an identification pin that is provided in the interface unit and that inputs an identification signal for identifying the communication mode. A multi-function processing device, wherein the signal processing is switched according to the input identification signal. 3. The multi-function processing device according to claim 1, wherein the different pins are shared by signals having the same input / output type.