JP2002281132A - Portable communications equipment - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a portable communications equipment, equipped with a plurality of antennas and a plurality of internal circuits whose test and adjustment can be quickly executed, and whose terminal itself can be made compact and light weight. SOLUTION: A DSP/CPU 1 controls switch elements 13a-13d in a switch part 13, so that either an antenna 8 or 9 can be connected to an internal circuit 12 or 13, corresponding to the antenna, when the terminal is use, and controls the switch part 13 so that an external output terminal 12a can be connected an internal circuit 10, and that an external output terminal 12b can be connected to an internal circuit 11, when the terminal is adjusted.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a portable communication terminal having a plurality of antennas, and more particularly, to a portable communication terminal which is reduced in size and weight.

[0002]

2. Description of the Related Art Conventionally, PHS (Personal Handy-phone S)
ystem), mobile phones, PDAs (Personal Digital As
Mobile communication terminals such as sistants) have connectors for connecting to other external devices. For example, the bottom of a mobile phone is provided with two external terminals as shown in FIG. 1 and an interface used for transmitting and receiving data to and from an external device. The external terminal is used, for example, to connect to an in-vehicle antenna or the like, and the interface is connected to a personal computer or the like via a cable, and is used when performing Internet or the like.

On the other hand, in recent years, there has been an increasing tendency to add a position detecting function to a portable communication terminal. As a representative of this position detection function, Global Positioning System (GPS)
ositioning system), but in order to acquire position information using GPS, a GPS antenna and an internal circuit corresponding to the GPS antenna are required.
As described above, when the GPS function is added to the mobile communication terminal, the antenna and the R provided in the existing mobile communication terminal are provided.
In addition to the internal circuit such as the F circuit, it is necessary to further mount a GPS antenna and an internal circuit.

[0004]

By the way, in the manufacturing process of the portable communication terminal, a test process for confirming the operation of each terminal is provided. Usually, in this test process, a defective input is detected by inputting a test input signal to the portable communication terminal by some method and confirming a signal output in response to the input signal. However, conventionally, there was no method for confirming the operation of a mobile communication terminal having a plurality of antennas and a plurality of internal circuits, and thus a method for confirming the operation of such a mobile communication terminal was required.

[0005] The present invention has been made in view of such circumstances, and in a portable communication terminal having a plurality of antennas and a plurality of internal circuits, testing and adjustment can be quickly performed.
It is another object of the present invention to provide a mobile communication terminal that can reduce the size and weight of the terminal itself.

[0006]

In order to achieve the above object, the present invention provides a first antenna, a first internal circuit provided corresponding to the first antenna, and a second antenna. And a second internal circuit provided corresponding to a second antenna, wherein the plurality of external terminals to which external devices are connected, and the external terminal and the first antenna First switching means for connecting one of the external terminals and the second antenna to the first internal circuit; and second switching means for connecting either the external terminal or the second antenna to the second internal circuit.
And the first or second switching means so as to connect one of the antennas and an internal circuit corresponding to the antenna when the terminal is in use. Switching control means for controlling the first and second switching means so as to connect each of the external terminals and the first internal circuit, and the other external terminal and the second internal circuit, respectively. A mobile communication terminal characterized by the following.

[0007] According to such a configuration, at the time of testing and adjusting the terminal in the manufacturing process, the operator only needs to insert the test terminal (plug) of the terminal tester into the external terminal and insert the test terminal into the external terminal. Testing and adjustment can be performed. Each external terminal is connected to the first internal circuit and the second internal circuit, respectively, so that the test and adjustment of the first and second internal circuits can be performed simultaneously,
The test time can be reduced. Further, in the manufacturing process, existing external terminals can be used as input terminals for test adjustment, so that it is not necessary to newly provide input terminals for test adjustment. In addition, at times other than the test, the first or second antenna is connected to the corresponding internal circuit, so that normal operation is not affected.
Note that the term “adjustment of the terminal” includes not only testing and adjustment of the terminal at the time of manufacture, but also analysis and re-inspection of defects and the like generated after sale. That is, all cases in which inspection and adjustment are performed on the operation of the terminal are included.

In order to achieve the above object, the present invention provides a first antenna, a first internal circuit provided corresponding to the first antenna, a second antenna, and a second antenna. A portable communication terminal comprising a second internal circuit provided in correspondence with the above, wherein only one external terminal to which an external device is connected, and one of the external terminal and the first antenna are connected to the second terminal. A first switching unit that connects to one internal circuit, a second switching unit that connects one of the external terminal and the second antenna to the second internal circuit,
When the terminal is used, the first antenna is connected to connect any one of the antennas and an internal circuit corresponding to the antenna.
Alternatively, the second switching means is controlled to selectively connect the external terminal and the first internal circuit and the external terminal and the second internal circuit when adjusting the terminal. And a switching control means for controlling the first and second switching means.

According to such a configuration, the number of external terminals can be reduced to one, so that there is only one insertion port for the test terminals (plugs) of the testing machine, and the operator can quickly connect the test terminals without hesitation. It becomes possible to insert it into an external terminal. In addition, since there is only one insertion port, it is possible to eliminate human error such as incorrect insertion of the test terminal, so that it is possible to improve the work efficiency during the test. In addition, since the number of external terminals can be reduced to one, the internal configuration and the external configuration of the terminal can be simplified, and cost reduction, size reduction, and weight reduction can be achieved.

Further, in the portable communication terminal having the above configuration,
The external terminal is always connected to one of the internal circuits.

As described above, since one of the internal circuits is always connected to the external terminal, the DSP / CPU can directly detect that the external device is connected to the external terminal. Therefore, a connection detection unit for detecting that the external device is connected to the external terminal is not required.
For these reasons, it is possible to further reduce the size and weight and simplify the circuit.

Further, in the portable communication terminal, a test input terminal for adjusting the first and second internal circuits is inserted into the external terminal.

As described above, since the external terminals can be used as the input terminals for test adjustment, it is not necessary to newly provide a test connector, and the size and weight and the circuit can be further simplified.

[0014]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. << 1st Embodiment >> FIG. 1: is a figure which shows the structure of the portable communication terminal which concerns on one Embodiment of this invention. In FIG. 1, reference numeral 1 denotes a DSP / CPU having both a control function for controlling the entire terminal and a signal processing function for processing data received via an antenna. Reference numeral 2 denotes a ROM (read-on memory) storing a CPU / DSP control program, reference numeral 3 denotes a RAM (random access memory) for temporarily storing data, and reference numeral 4 denotes image data output from the CPU / DSP. A reference numeral 5 is a numeric keypad for inputting a telephone number, an input unit provided with various function keys, a reference numeral 6 is a speaker that emits sound based on an audio signal, and a reference numeral 7 is an external sound. Is output as an analog audio signal.

Reference numeral 8 denotes a GPS antenna, and reference numeral 9 denotes an antenna used for normal data communication and voice transmission / reception. Reference numeral 10 denotes a GPS internal circuit corresponding to a GPS antenna, and reference numeral 11 denotes an internal circuit corresponding to the antenna 9 used for data communication and voice transmission / reception. It includes a time-division multiplexing circuit for outputting, a multiplexing / demultiplexing circuit for multiplexing or demultiplexing input signals and outputting, and a filter. Code 12
Reference numerals a and 12b denote external terminals from which test signals for testing and adjustment are input from the external terminals, for example, in the manufacturing process of the terminal. A test signal for testing and adjusting the GPS internal circuit 10 is input to the external terminal 12a, and a test signal for testing and adjusting the internal circuit 11 is input to the external terminal 12b.

Reference numeral 13 denotes a GPS antenna 8 and a GPS antenna 8.
Switching element 13a for connecting the internal circuit 10 for
A switching element 13b for connecting the external terminal 12a to the GPS internal circuit 10; an external terminal 12b and the internal circuit 11;
Switching element 13c connecting the antenna and the antenna 9
And a switching element 13d that connects the internal circuit 11 with the switching element 13d. Each of the switching elements 13a to 13d of the switching unit 13 performs an opening / closing operation according to a switch switching signal input from the DSP / CPU 1. In the normal mode, the switching elements 13a to 13a to
13c is set to be open, and only the switching element 13d is set to be closed, that is, the antenna 9 and the internal circuit 11 are set to be connected.

Reference numeral 14 denotes a connection detection unit that detects connection of an external device to an external terminal and notifies the DSP / CPU of the connection. Reference numeral 15 denotes an interface that outputs a signal corresponding to the test signal when the test signal is input from an external terminal.

Next, FIG. 2 shows an overview of a connector portion provided in the portable communication terminal according to the present embodiment. The connector section includes the above-described external terminals 12a and 12b and the interface 14, and has a configuration in which external terminals are provided at both ends of the interface 14, respectively.
This connector portion is provided on the bottom of a mobile phone or the like as a mobile communication terminal, for example.

Next, the operation of the portable communication terminal having the above configuration will be described. First, when performing a test or adjustment in the manufacturing process of the terminal, the operator needs to use the external terminal
The test terminal of the tester for inputting the test signal of the GPS internal circuit 12 is inserted into the external terminal 12b, and the test terminal of the tester for inputting the test signal of the internal circuit 11 is inserted into the external terminal 12b. When such an operation is performed, the connection detection unit 1
4 detects that the external device is connected to the external terminals 12a and 12b, and outputs the fact to the DSP / CPU1.

When the DSP / CPU 1 recognizes that an external device is connected to the external terminal, the switching unit 13
, A switch switching signal is output so that the switching elements 13a and 13d are opened and the switching elements 13b and 13c are closed. The switching unit 13 switches the switching elements 13a to 13d based on a switch switching signal. As a result, the external terminal 12a and the GPS internal circuit 10 are connected, and the external terminal 12b and the internal circuit 11 are connected.

In this state, when a command to test the internal circuit is input from the external terminal 12a or 12b from the tester side, the DSP / CPU 1 enters a test or adjustment standby state. Subsequently, when various test signals for testing and adjusting the internal circuit are input from the tester via the external terminal 12a and the external terminal 12b, the GPS
Internal circuit 10, internal circuit 11, and DSP / CPU1
Performs a predetermined control corresponding to the test signal. Then, an output signal corresponding to the test signal is output via the interface 15.

Then, the test is completed and the external terminals 12
When the test terminal of the tester inserted in the a or 12b is removed, the connection detecting unit 14 detects that the contact with the external device has been lost, and outputs the fact to the DSP / CPU1. Upon receiving such information, the DSP / CPU 1 outputs to the switching unit 13 a switch switching signal for opening 13a to 13c and closing only 13d. As a result, the switching unit 13 switches to the normal mode by switching the switching elements 13a to 13d based on the switch switching signal.

On the other hand, when the terminal is used, a predetermined key of the input unit 5 is operated to switch from the normal mode to the G mode.
When the mode is switched to the PS mode, the signal is output from the input unit to the DSP / CPU 1, whereby the DSP / CPU 1
/ CPU 1 switches the switching element 13
a is closed, and the other switching elements 13
A switch switching signal for opening b to 13d is output. The switching unit 13 switches the switching element based on the switch switching signal, and as a result, the GPS antenna 8
And the GPS internal circuit 10 are connected, and a state in which position information can be obtained is obtained. Then, when predetermined processing such as acquiring position information or storing the acquired position information in the RAM 3 is completed, or when a predetermined time set by a timer (not shown) has elapsed. Then, the DSP / CPU 1 outputs to the switching unit 13 a switch switching signal for returning to the switching state in the normal mode. As a result, each switching element returns to the normal mode.

Second Embodiment Next, FIG. 3 shows a configuration of a portable communication terminal according to a second embodiment of the present invention. The internal configuration of the mobile communication terminal according to the present embodiment is substantially the same as the internal configuration of the mobile communication terminal according to the above-described first embodiment, except that the number of external terminals is reduced. As described above, in the second embodiment, the number of external terminals is always one regardless of the number of antennas provided in the mobile communication terminal or the number of internal circuits. Further, as the number of external terminals becomes one, the configuration of the switching elements in the switching unit 13 also differs.

In FIG. 3, the switching unit 21 includes a switching element 21a for connecting the GPS internal circuit and the GPS antenna 8 or the external terminal 12, and a switching element for connecting the internal circuit 11 and the external terminal 12 or the antenna 9. 2
1b. Further, the switching elements 21a and 21b operate in conjunction with each other. That is, when the internal circuit 11 and the external terminal 12 are connected, the internal circuit 10 and the GPS antenna 8 are automatically connected, while the GPS internal circuit 10 and the external terminal 12a are connected. Is connected, the internal circuit 1
1 and the antenna 9 are connected.

Each of the switching elements 13a to 13d of the switching section 13 performs an opening / closing operation according to a switch switching signal input from the DSP / CPU 1. In the normal mode, the switching element 21a controls the GP mode.
The S internal circuit 10 is connected to the external terminal 12, and
The internal circuit 11 and the antenna 9 are set to be connected by the switching element 21b. As described above, since only one external terminal is provided in the present embodiment, when testing and adjustment are performed in the manufacturing process of the terminal, the external terminal 12 and the GPS internal circuit 10 or the internal circuit 11 Are alternately connected, so that testing and adjustment are individually performed. Further, as described above, in the present embodiment, one of the internal circuits is always connected to the external terminal 12, so that when an external device is connected to the external terminal 12, the device is connected to the external terminal 12. Since the output signal is input to the DSP / CPU, the connection detection unit 14 for detecting the connection of the external device as in the first embodiment becomes unnecessary.

Next, FIG. 4 shows an overview of the connector provided in the portable communication terminal according to the present embodiment. The connector section includes the external terminal 12 and the interface 1 described above.
4. This connector portion is provided on the bottom of a mobile phone or the like as a mobile communication terminal, for example.

Next, the operation of the portable communication terminal according to the second embodiment having the above configuration will be described. First, when performing a test or adjustment in the manufacturing process of the terminal, the test terminal of the tester is inserted into the external terminal 12. In this state, a command for testing either the GPS internal circuit 10 or the internal circuit 11 is input from the external terminal 12 to the tester. Here, the GPS internal circuit 1
If a command to test 0 is input, D
The SP / CPU 1 outputs to the switching unit 21 a switch switching signal for connecting the GPS internal circuit 10 and the external terminal 12 for which the test start has been instructed. Thereby, the GPS internal circuit 10 and the external terminal 1 for which the test start is instructed are set.
2 are connected, and a standby state for test or adjustment is established.
Subsequently, when various test signals for testing and adjusting the internal circuit are input from the external terminal 12, the GPS internal circuit 10 and the DSP / CPU 1 perform predetermined control corresponding to the test signal. Then, an output signal corresponding to the test signal is output via the interface 15.

When the test and adjustment of the GPS internal circuit 10 are completed, a command for starting the test of the internal circuit 11 as another internal circuit is sent from the tester to the external terminal 12.
Is input to the DSP / CPU 1 via the. This allows
The DSP / CPU 1 outputs a switch switching signal for connecting the internal circuit 11 and the external terminal 12 to the switching unit 21. As a result, when the internal circuit 11 and the external terminal 12 are connected, the internal circuit 11 and the DSP /
Various test signals for testing and adjusting the CPU are input. The internal circuit 11 and the DSP / CPU 1 perform predetermined control corresponding to the test signal, and an output signal corresponding to the test signal is output via the interface 15. When the test is completed and a test end command is input from the tester to the DSP / CPU 1 via the external terminal 12, the DSP / CPU 1 recognizes the end of the test and instructs the switching unit 21 to perform the normal mode. And outputs a switch switching signal for returning to the switching state.

On the other hand, when the terminal is used, a predetermined key of the input unit 5 is operated to switch from the normal mode to the G mode.
When the mode is switched to the PS mode, the signal is output from the input unit 5 to the DSP / CPU 1, thereby
The P / CPU 1 sends a GPS internal circuit 1 to the switching unit 21.
0 and a switch switching signal to connect the GPS antenna 8. Thereby, the switching unit 21 controls the switching element 21a to connect the internal circuit 10 and the GPS antenna 8, and in conjunction with this, the switching element 21b connects the internal circuit 11 and the external terminal 12. . Then, when predetermined processing such as acquiring position information or storing the acquired position information in the RAM 3 is completed, or when a predetermined time preset by a timer (not shown) has elapsed. When you do, DS
The P / CPU 1 outputs to the switching unit 21 a switch switching signal for returning to the switching state in the normal mode. Thereby, each switching element returns to the normal mode.

In the above-described embodiment, after the test and adjustment of the GPS internal circuit 10 are completed, the internal circuit 1
Although one test and adjustment are started, one test may be set such that the internal circuit to be tested is switched a plurality of times.

As described above, according to the portable communication terminal according to the second embodiment, the number of external terminals can be limited to one, so that the internal and external configurations of the terminal can be simplified, and the cost can be reduced. Reduction and size reduction can be achieved. Further, in this embodiment, since either of the internal circuits is always connected to the external terminal, the DSP / CPU can directly detect that the external device is connected to the external terminal. Therefore, the connection detector required in the first embodiment is not required. Further, the number of switching elements constituting the switching unit can be two. For these reasons, it is possible to further reduce the size and weight and simplify the circuit. Further, by linking the switching elements, the switch switching signal output by the DSP / CPU can be simplified, and the data processing time and the like can be reduced. Also, since there is only one external terminal, testing,
When the adjustment is performed, for example, in the first embodiment, the GP
The test terminal corresponding to the internal circuit for S is connected to the external terminal 12a,
A test terminal corresponding to a normal internal circuit had to be connected to the external terminal 12b. If these were inserted in reverse, there was a problem that the test could not be performed. There is no danger that a test terminal to be input to the terminal will be inserted by mistake, thereby reducing the possibility of human error or the like, and providing an effect that the test can be performed quickly.

Although the embodiments of the present invention have been described in detail with reference to the drawings, the specific configuration is not limited to the embodiments, and includes a design and the like without departing from the gist of the present invention. It is.

[0034]

As described above, according to the portable communication terminal of the present invention, a plurality of external terminals to which an external device is connected, and one of the external terminal and the first antenna are connected to the first terminal. First switching means for connecting to an internal circuit, second switching means for connecting one of an external terminal and the second antenna to a second internal circuit, and one of the antennas when the terminal is used. And controlling the first or second switching means so as to connect the internal circuit corresponding to the antenna to one external terminal, the first internal circuit, and another external circuit when adjusting the terminal. A switching control unit for controlling the first and second switching units so as to connect the terminal and the second internal circuit, respectively, so that when testing and adjusting the terminal in the manufacturing process, the operator can use the external terminal. Terminal tester Test terminals work only of inserting preparative pin (plug) to the external terminal, it is possible to implement the adjustment. Each external terminal is connected to the first internal circuit and the second internal circuit.
And the internal circuits are connected to the first and second internal circuits, respectively, so that testing and adjustment of the first and second internal circuits can be performed simultaneously, and the test time can be reduced. Further, in the manufacturing process, existing external terminals can be used as input terminals for test adjustment, so that it is not necessary to newly provide input terminals for test adjustment.

Further, according to the portable communication terminal of the present invention, the only external terminal to which an external device is connected, and the first terminal for connecting one of the external terminal and the first antenna to the first internal circuit. Switching means for connecting one of the external terminal and the second antenna to the second internal circuit, and any one of the antennas and the internal circuit corresponding to the antenna when the terminal is in use. The first or second switching means is controlled so as to connect the external terminal and the first internal circuit and the external terminal and the second internal circuit during the adjustment of the terminal.
The first and second internal circuits are selectively connected to each other.
And switching control means for controlling the switching means.

According to such a configuration, since the number of external terminals can be reduced to one, the number of insertion ports of the test terminals (plugs) of the testing machine becomes one, and the operator can quickly connect the test terminals without hesitation. It becomes possible to insert it into an external terminal. In addition, since there is only one insertion port, it is possible to eliminate human error such as incorrect insertion of the test terminal, so that it is possible to improve the work efficiency during the test. In addition, since the number of external terminals can be reduced to one, the internal configuration and the external configuration of the terminal can be simplified, and cost reduction, size reduction, and weight reduction can be achieved.

In the portable communication terminal having the above configuration,
The external terminals are always connected to one of the internal circuits. As described above, since one of the internal circuits is always connected to the external terminal, the fact that the external device is connected to the external terminal is indicated by DS.
Since the P / CPU can directly detect the external device, a connection detection unit for detecting that the external device is connected to the external terminal becomes unnecessary. For these reasons, it is possible to further reduce the size and weight and simplify the circuit. In addition, by interlocking switching elements, DSP / CPU
Can simplify the switch switching signal output by
Data processing time and the like can be reduced.

[Brief description of the drawings]

FIG. 1 is a block diagram illustrating an internal configuration of a mobile communication terminal according to a first embodiment of the present invention.

FIG. 2 is a diagram showing an overview of a connector section of the mobile communication terminal according to the first embodiment of the present invention.

FIG. 3 is a block diagram showing an internal configuration of a mobile communication terminal according to a second embodiment of the present invention.

FIG. 4 is a diagram showing an overview of a connector section of a mobile communication terminal according to a second embodiment of the present invention.

[Explanation of symbols]

1, 20 DSP / CPU, 2 ROM, 3 RAM,
4 display unit, 5 input unit, 6 speaker, 7 microphone, 8 GPS antenna, 9 antenna, 10
GPS internal circuit, 11 ... internal circuit, 12a, 12b,
12: external terminal, 13: switching unit, 13a, 13b, 13
c, 13d, 21a, 21b ... switching element, 14
... Connection detector, 15 ... Interface

Claims (3)

[Claims] 1. A first antenna, a first internal circuit provided corresponding to the first antenna, a second antenna, and a second internal circuit provided corresponding to the second antenna. A plurality of external terminals to which an external device is connected, and a first switch for connecting any one of the external terminal and the first antenna to the first internal circuit. Means for connecting one of the external terminal and the second antenna to the second internal circuit.
And the first or second switching means so as to connect one of the antennas and an internal circuit corresponding to the antenna when the terminal is used. Switching control means for controlling the first and second switching means so as to connect the external terminal and the first internal circuit, and the other external terminal and the second internal circuit, respectively. A mobile communication terminal characterized by the following. 2. A first antenna, a first internal circuit provided corresponding to the first antenna, a second antenna, and a second internal circuit provided corresponding to the second antenna. And a first switch for connecting any one of the external terminal and the first antenna to the first internal circuit. Means for connecting one of the external terminal and the second antenna to the second internal circuit.
The switching means, when the terminal is used, the first or the second switching means is controlled so as to connect any of the antennas and the internal circuit corresponding to the antenna, when adjusting the terminal, Switching control means for controlling the first and second switching means so as to alternatively connect the external terminal and the first internal circuit, and the external terminal and the second internal circuit. A mobile communication terminal comprising: 3. The mobile communication terminal according to claim 2, wherein the external terminal is always connected to one of the internal circuits.