JPH0993325A - Portable telephone system and method for detecting its key button - Google Patents

Abstract

PROBLEM TO BE SOLVED: To realize a portable telephone set and a method for detecting its key button in which problems on a key button detection processing are solved for a kind of the portable telephone system and an engineering development period and cost for the key button detection processing are reduced. SOLUTION: This telephone set is provided with a head address table 6 in which a received pointer and a head address of a key data table 7 are in cross reference, and with the key data table 7 in which key input detection data and an inputted key button are in cross reference. Then a processing control section 4 selects the key data table 7 corresponding to the received pointer from the head address table 6 and reads an input key button corresponding to the key input detection data based on the selection key data table to detect the input key button.

Description

Detailed Description of the Invention

[0001]

TECHNICAL FIELD The present invention relates to a PHS (Personal
The present invention relates to a mobile phone device of a Handyphone System) and a key button detection method thereof, and more particularly to a mobile phone device and a key button detection method thereof that can reduce the development time and development cost of a key button detection processing program.

[0002]

2. Description of the Related Art A portable telephone device has a different system depending on its use such as business use, public use, and home use, and the arrangement of key buttons may differ depending on the system. A conventional mobile phone device will be described with reference to FIG. FIG. 5 is a schematic configuration explanatory diagram of a conventional mobile phone device. In the example shown in FIG. 5, the key buttons 1 are arranged in a matrix of, for example, 8 rows × 3 columns, and each key button 1 has a pointer switching means by a common line (10, 11, 12, ... 17) for each row. Two
Connected to each line, and the lines (m0, m1, m2) common to each column.
) Is connected to the reading means 3. Further, the pointer switching means 2 and the reading means 3 are connected to the processing control section 4 '.

The configuration and operation of each component of the conventional portable telephone device will be specifically described. The pointer switching means 2 includes a clock that gives a timing for applying a voltage and a pointer that indicates a value of 0 to 7 (not shown). Then, according to the timing of the clock, a pulse voltage is applied to the line having the line number indicated by the pointer value, and the line number to which the voltage is applied, that is, the pointer value is sent to the processing control unit 4 '.

When a voltage is applied to a certain line, the pointer switching means 2 increments the pointer value by 1,
A voltage is applied to the next line. That is, the lines common to the rows of the key buttons 1 (l0, l1, l2,
... l7) is one in which one line is selected by the pointer switching means 2 at a constant cycle and a pulse voltage is applied.

Further, the reading means 3 detects, for each column, whether or not a key button has been pressed. A constant voltage is applied to the lines (m0, m1, m2) common to each column, and the level is usually low. When none of the key buttons 1 connected to the line is pressed, the level remains low, and when any of the key buttons 1 is pressed, the pointer switching means 2 The level of the line becomes high due to the pulse voltage from. The reading means 3 reads the level of each line according to the clock timing and sends the key input detection results for three columns to the processing control section 4'as key input detection data. The key input detection result for each column is the logical value "0" when the level is low, and the level high
In this case, the logical value is "1".

Here, the key input detection data indicating the detection result for three columns is 0 (000) to 3 bits data.
It can be indicated by a value of 7 (111). For example, when the key input detection data is "4 (100)", the line m0
Indicates that the level is high and lines m1 and m2 are low.

Then, the processing control section 4'identifies the pressed key button 1 from the pointer value from the pointer switching means 2 and the key input detection data from the reading means 3.

Next, the key button detection processing in the processing control section 4'of the conventional portable telephone device will be described with reference to FIG. FIG. 6 is a flow chart showing the key button detection processing in the conventional processing control unit 4 '. When the key button detection process (key scan process) is started, the process control unit 4'first reads the key input detection data from the reading means 3 (100), and determines whether the key input detection data is "0". That is, it is determined whether or not the key button 1 has been pressed (102). If the key button 1 has not been pressed (Yes), the process ends and the process returns to the start.

When the key input detection data is other than "0" in the process (102) (No), the process controller 4'checks the pointer value from the pointer switching means 2 (104). , The common line l0, l1, l2, ... L7 is specified for each row based on the pointer value, and the pressed key button 1 is specified.

That is, if the pointer value is "0" in the process 104, the process control section 4'performs the key detection process of the line l0 (110), and if the pointer value is "1", the process of the line l1 is performed. Key detection processing is performed (120), and then key detection processing is performed for each line in the same manner (130).
~ 180), the process is terminated and the process is returned to the start.

Here, the key detection processing for each line will be specifically described with reference to FIG. 7 by taking the key detection processing for the line 10 shown in the processing 110 of FIG. 6 as an example. FIG.
FIG. 7 is a flowchart of the key detection process for the line 10 shown in FIG. As shown in FIG. 7, the process control unit 4'specifies the pressed key button 1 based on the key input detection data read in the process 100 of FIG. That is,
Determine what the key input detection data is (200),
If the key input detection data is "1", key button "3"
Is input (201), and if the key input detection data is "2", it is determined that the key button "2" has been input (202), and the like in the same manner based on the key input detection data. Is specified (203 to 207). Thus, conventionally, the input key button is specified by software processing.

Further, as described above, since the system of the mobile telephone device and the arrangement of the key buttons differ depending on the type of the mobile telephone device, the module for each row in the key button detection processing shown in FIGS. 6 and 7 (FIG. 6). Processing 110 to 18
0) was unique to each type of mobile phone device.

[0013]

However, in the above-mentioned conventional portable telephone device and the key button detecting method thereof, a key button detecting process unique to each type of portable telephone device is performed according to the system and the arrangement of the key buttons. Therefore, there has been a problem that a key button detection process has to be developed for each type of mobile phone device, which requires a development period and a development cost.

The present invention has been made in view of the above circumstances, and a mobile phone capable of reducing the development period and the development cost of the key button detection process by making the key button detection process common to a plurality of types of mobile phone devices. An object is to provide a device and a key button detection method thereof.

[0015]

According to a first aspect of the present invention for solving the above-mentioned problems of the prior art, the key buttons are arranged in a matrix and a voltage is applied in each row direction of the key buttons. Pointer switching means for outputting the applied row number as a pointer value, reading means for detecting the applied voltage for each column direction of the key button and outputting it as key input detection data, and key input detection from the reading means In a mobile phone device having data and a processing control unit that detects a key button pressed from a pointer value from the pointer switching unit, in the processing control unit, for each row direction of the key button with respect to key input detection data. There are multiple key data tables to which specific key buttons are assigned, and the start address of the key data table to be referenced for each pointer value And a head address table that specifies the head address of the key data table corresponding to the pointer value output by referring to the head address table, and refers to the specified key data table. Since it is a processing control unit that specifies the key button corresponding to the output key input detection data, when the system of the mobile phone device and the arrangement of the key button are different, the key data table and the head address table It suffices to change the contents, and the processing itself of the software that refers to the table does not have to be changed.

According to a second aspect of the present invention for solving the above-mentioned problems of the conventional example, in the key button detecting method of the portable telephone device according to the first aspect, when the key button is pressed,
The processing control unit receives the pointer value from the pointer switching unit and the key input detection data from the reading unit,
The head address of the key data table corresponding to the pointer value is specified by referring to the head address table, and the key button corresponding to the key input detection data is specified by referring to the specified key data table. Therefore, when the system of the mobile phone device and the arrangement of the key buttons are different, the contents of the key data table and the head address table may be changed, and the processing itself of the software that refers to the table does not have to be changed.

[0017]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the claimed invention will be described with reference to the drawings. The mobile phone device and the key button detection method thereof according to the present invention are provided with two types of tables in the processing control unit, and the processing control unit refers to the two types of tables based on the pointer value and the key input detection data. The input keys are detected, and in the case of a mobile phone having a different key arrangement or the like, it can be dealt with by simply changing the contents of the table.

FIG. 1 is a block diagram showing the configuration of a portable telephone device according to the present invention. It should be noted that parts having the same configuration as in FIG. As shown in FIG. 1, the basic configuration of the mobile phone device of the present invention (this device) is almost the same as that of the conventional mobile phone device shown in FIG. 5, and, for example, in a matrix of 8 rows × 3 columns. The arranged key buttons 1 and lines common to each row (l0, l1, l2, ... l7
), A pointer switching means 2 connected to the key button 1, a reading means 3 connected to the key button 1 by a line (m0, m1, m2) common to each column, and a processing control unit 4 for performing processing and control. It consists of and.

Further, as a characteristic part of the present apparatus, a head address table 6 and a key data table 7 are provided in a memory 5 composed of a ROM or the like inside the processing control unit 4, and further, the key data table 7 is a pointer. T corresponding to the value
It is composed of eight types of tables from 0 to T7. Further, the key button 1, the pointer switching means 2, and the reading means 3 are the same parts as in the conventional case. However,
In this device, the arrangement of the key buttons 1 is different from that of the conventional example shown in FIG.

Next, each component of this apparatus will be specifically described. The pointer switching means 2 and the reading means 3 are the same as the conventional ones, and the pointer switching means 2 is
Common line l0, l for each row according to clock and pointer
A pulse voltage is applied to any one of 1, 12, ... 17 and a pointer value indicating the line to which the voltage is applied is sent to the processing control unit 4. The reading means 3 sends to the process control section 4 key input detection data indicating whether or not the key button 1 connected to the lines m0, m1, m2 common to each column has been pressed.

Further, the processing control section 4 receives the pointer value from the pointer switching means 2 and the key input detection data from the reading means 3 as in the conventional processing control section 4 ', and based on them. This is to detect the pressed key button (input key button), and when the input key button is specified, the head address table 6 and the key data table 7 are referred to for specification. It is a feature of the invention. The operation of the processing control unit 4 will be described in detail later.

Next, the head address table 6 and the key data table 7 which are the characteristic parts of the present apparatus are shown in FIG.
This will be described with reference to FIGS. 2 is a schematic explanatory diagram of the head address table 6, FIG. 3 is a schematic explanatory diagram of the key data table 7, FIG. 3 (a) shows the key data table T0, and FIG. The data table T1 is shown, and FIG. 3C shows the key data table T7.

As shown in FIG. 2, the head address table 6 associates the pointer value with the head address on the memory 5 of the key data table 7 corresponding to the pointer value. That is, the head address table 6
Specifies the key data table 7 to be referred to from the eight kinds of key data tables 7 (T0 to T7) by specifying the start address of one kind of key data table 7 based on the pointer value. Is.

The key data table 7 associates the key input detection data with the input key buttons, and serves as a reference for identifying the input key buttons.
The key data table 7 has T0 corresponding to the pointer value.
.. to T7 are classified into eight types of tables (T0 to T7), T0 corresponds to a pointer value "0", T1 corresponds to a pointer value "1", and so on. It corresponds to.

Here, the key data table 7 will be specifically described with reference to FIGS. FIG.
As shown in (a), the key data table T0 serves as a reference for detecting the input key button when the pointer value is "0", and the key input detection data received by the processing control unit 4 from the reading means 3 is obtained. And the key button (input key button) pressed among the key buttons ("3""2""1") on the line l0.
For example, at T0, the key input detection data is "1 (00
1) ”, the input button is“ 1 ”, and when the key input detection data is“ 2 (010) ”, the input button is“ 2 ”.

Further, the key input detection data is "3 (11
Even when the key buttons on a plurality of columns such as “1)” and “7 (111)” are simultaneously pressed, one input key button is specified from one key input detection data for convenience. For example, the key input detection data is "3 (11
In the case of "1)", the input key button is "1".

Similarly, the key data table T1 shown in FIG. 3 (b) is the reference when the pointer value is "1", and the key input detection data and the input key button (" 6 "," 5 ", and" 4 "), and the key data table T7 shown in FIG. 3C is the reference when the pointer value is" 7 ". Upper input key button ("Menu"
"High volume" and "Low volume") are associated with each other.

Here, the key data tables T0, T1, T
7 was explained, but other key data table 7
Have the same configuration, and each is a detection reference for the input key button on the line designated by the pointer value. Thus, by providing the key data table 7 for each pointer value, the input key button can be specified based on the pointer value and the key input detection data.

Further, since the criteria for detecting the input key button is stored in the memory 5 as the key data table 7, the contents of the key data table 7 are changed when the system of the portable telephone device or the arrangement of the key buttons is changed. By changing it, a new detection standard can be created, and the processing itself for referring to the table does not have to be changed, so that various models can be easily supported.

Next, the operation of the processing control section 4 will be described. The processing control unit 4 receives the key input detection data and the pointer value, and first, the head address table 6 shown in FIG.
Is read, the head address of the key data table 7 corresponding to the pointer value is read, and the key data table 7 is read.
To identify. Then, the specified key data table 7
With reference to, the input key button corresponding to the key input detection data is specified. That is, first, the key data table 7 is specified using the head address table 6, and then the input key button is detected using the specified key data table 7.

Here, the key button detection processing in the processing control unit 4 will be specifically described with reference to FIG. FIG.
FIG. 6 is a flowchart showing a key button detection process in the process control unit 4. As shown in FIG. 4, the process control unit 4 reads the key input detection data received from the reading unit 3 (300) and determines whether the key input detection data is “0”, that is, whether the key button 1 is pressed. If it is judged (302) and it is "0" (Yes), the process is terminated and the process returns to the start.

If it is determined in the process 302 that the key input detection data is not "0" (No), that is, if the key button 1 is pressed, the pointer received from the pointer switching means 2 is received. Read the value (30
4), the start address of the key data table 7 corresponding to the pointer value is read from the start address table 6 (3
06).

Then, the input key button corresponding to the key input detection data is read from the key data table 7 designated by the head address (308), and the processing is terminated,
Return to the start. Thus, the method of detecting the input key button in the mobile phone device of the present invention is performed.

According to the portable telephone device and the key button detecting method thereof of the present invention, the head address table 6 which makes the received pointer value correspond to the head address of the key data table 7, the key input detection data and the input key button are provided. And the key data table 7 for associating with each other, the processing control unit 4 selects the key data table 7 corresponding to the received pointer value from the head address table 6, and selects the key input detection data from the selected key data table. Since the corresponding input key button is read and the input key button is detected, if the system of the mobile phone and the arrangement of the key buttons are different, the contents of the table serving as the detection reference may be changed. The processing of the referenced software does not have to be changed, so the key button detection processing for each model There is an effect capable of reducing the development time and development costs.

The contents of the table serving as the detection reference can be changed by adding a new type of key data table in the memory 5 and further changing the start address of the start address table. is there.

[0036]

According to the present invention, the head address of the key data table is specified by referring to the head address table with the pointer value output from the pointer switching means, and the head data is output from the reading means. Since the mobile phone device and the key button detection method for identifying the key button by referring to the above-specified key data table in the key input detection data are used, when the system of the mobile phone device and the arrangement of the key buttons are different, the key is detected. Change the contents of the data table and the start address table,
Since the process itself of the software that refers to the table does not have to be changed, there is an effect that the development time and the development cost of the key button detection process for each model can be reduced.

[Brief description of drawings]

FIG. 1 is a block diagram showing the configuration of a mobile phone device according to the present invention.

FIG. 2 is a schematic explanatory diagram of a head address table 6.

3A to 3C are schematic explanatory diagrams of a key data table 7. FIG.

FIG. 4 is a flowchart showing a key button detection process in the process control unit 4.

FIG. 5 is a schematic configuration explanatory diagram of a conventional mobile phone device.

FIG. 6 is a flowchart showing a key button detection process in a conventional process control unit 4 ′.

FIG. 7 is a flowchart of the key detection process for the line 10 shown in FIG.

[Explanation of symbols]

1 ... Key button, 2 ... Pointer switching means, 3 ...
Reading means, 4, 4 '... processing control section, 5 ... memory, 6 ... head address table, 7 ... key data table

Claims (2)

[Claims] 1. Key buttons arranged in a matrix, pointer switching means for applying a voltage for each row direction of the key buttons, and outputting the applied row number as a pointer value, and for each column direction of the key buttons. Reading means for detecting the applied voltage and outputting it as key input detection data,
In a mobile phone device having key input detection data from the reading unit and a processing control unit that detects a key button pressed from a pointer value from the pointer switching unit, in the processing control unit, with respect to the key input detection data, And a head address table for storing the head address of the key data table to be referred to for each pointer value. A key button corresponding to the key input detection data output by referring to the specified key data table by specifying the start address of the key data table corresponding to the pointer value output by referring to the head address table A mobile phone device characterized by being a processing control unit for specifying 2. When the key button is pressed, the processing control section receives the pointer value from the pointer switching means and the key input detection data from the reading means, and refers to the head address table to find the key corresponding to the pointer value. 2. The key button detection method for a mobile phone device according to claim 1, wherein the start address of the data table is specified, and the key button corresponding to the key input detection data is specified by referring to the specified key data table. .