KR20030022556A - Method for automatically locking touch screen of personal digital assistant - Google Patents

Abstract

PURPOSE: A method for automatically locking a touch screen in a PDA(Personal Digital Assistant) is provided to automatically set/cancel a touch screen locking according to a call connection state of a PDS phone, without considering a key inputting even when the touch screen is contacted with a user's face, thereby preventing a wrong operation of the PDA phone. CONSTITUTION: When a user presses a hardware button corresponding to send/end keys to make a call, a central processing unit recognizes the pressed button(503), and sets an off state to an on state(513), then connects a call with the most recently transmitted telephone number(515). The central processing unit performs an operation corresponding to inputted TS key data(519), in order that the user receives the call. When the user attempts to cancel a TS automatic locking function, the central processing unit turns off a TS automatic locking flag, since coordinates values of key data inputted to a touch screen are within a TS automatic locking cancel icon range(521), and erases TS automatic locking function settings from a display window(523).

Description

How to automatically lock your touch screen in a portable personal digital assistant {METHOD FOR AUTOMATICALLY LOCKING TOUCH SCREEN OF PERSONAL DIGITAL ASSISTANT}

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method of automatically locking a touch screen of a portable digital assistant (hereinafter, referred to as a "PDA"). In particular, the present invention relates to a call connection state in a PDA phone capable of simultaneously performing a mobile phone function. Accordingly, the present invention relates to a method of automatically setting a touch screen lock to prevent kiosk operation of a PDA phone and to facilitate user's convenience even when the user's face contacts the touch screen.

Due to the development of technology and the increase of information, the purpose of communication is shifting from simple voice transmission to information transmission. Mobile phones, which are personal means of portable communication, are primarily limited to the delivery of information such as Internet searches, e-mail transmissions, etc., for the purpose of voice transmission.

As is well known, PDAs are equipped with portable computer functions, electronic organizer functions, etc., allowing users to carry and utilize personal information. The purpose of this PDA is to provide personal information management programs such as address book and notepad, and to exchange data freely through connection with a computer (PC), and to install new programs that users need in addition to the basic programs. Can be used.

Currently, PDAs (hereinafter referred to as "PDA phones") that have a built-in mobile communication module to perform a telephone function are being developed. A telephone call related user interface of a general PDA phone has a form as shown in FIG. 1 for users familiar with existing mobile phones.

1 illustrates a PDA phone showing a user interface window associated with a phone call.

When the PDA phone enters into a call-related state, the user interface window as shown in FIG. 1 is provided. In the display window 107, function keys related to a call are displayed on the touch screen 110, such as a numeric key combination for a dial, a call key, an erase key, and an end key.

In addition, the PDA phone is provided with an antenna 103, a speaker 101, and a microphone 105, and provides a touch screen / display window 110. In some cases, the PDA phone may be provided with a hardware button 120 as shown in FIG. 1.

Hereinafter, the problem of the conventional PDA phone will be described by taking an outgoing operation as an example. The user touches corresponding icons (Icons) provided on the touch screen 110 of the display window 107 with a pen or a hand, and dials by pressing a phone number key, a calling key, and the like. When the connection with the receiving terminal is completed, the user takes the PDA phone itself near the ear and mouth of the face to talk with the other party by using the speaker 101 and the microphone 105 to talk with the other party.

However, at this time, the face of the user may be in contact with the touch screen 110 during the call. Since the touch screen 110 recognizes this as a key input even with a light touch, the PDA phone may determine that the user inputs an icon corresponding to the contact surface and perform an unwanted operation. In this case, for example, when the numeric key is pressed, the DTMF tone is transmitted to the counterpart, so that the counterpart may feel unpleasant, and when the end key is pressed, the call is disconnected.

Therefore, the present invention automatically sets / releases the touch screen lock according to the call connection state of the PDA phone, and during the call, recognizes only when a predetermined key data is input, and releases the touch screen automatic lock or terminates the call. In the area where the user's face is hard to touch on the screen of the PDA phone, the touch screen is equipped with an icon for releasing the touch screen lock mode or ending the call, thereby effectively preventing malfunction of the PDA phone during a call. And it provides a way to maximize the convenience of the user.

According to an aspect of the present invention, there is provided a method of processing key data input to a portable personal digital assistant having a mobile phone function, the method comprising: a first step of setting a touch screen automatic locking mode when a call is initiated; And a second step of releasing the touch screen automatic locking mode when the call is terminated. During the call, a third step of checking key data input from the outside; A fourth step of maintaining the set touch screen automatic locking mode if the key data inputted from the outside is not based on a preset appointment as a result of the checking of the third step; And a fifth step of releasing the touch screen automatic locking mode when the key data input from the outside is based on a preset appointment as a result of the inspection of the third step.

The present invention provides a method of processing key data input by a portable personal digital assistant having a telephone function, comprising: a first step of setting a touch screen auto lock flag when entering a busy state; If key data is input through a touch screen, checking whether the touch screen auto lock flag is set; A third step of performing an operation corresponding to the input touch screen key data if the touch screen auto lock flag is not set; A fourth step of checking a coordinate value of the input touch screen key data when the touch screen auto lock flag is set; As a result of the inspection of the fourth step, if the coordinate value of the input touch screen key data is included in the first area preset on the touch screen, the touch screen lock flag is released and the operation from the second step is performed. Performing a fifth step; And if the coordinate value of the input touch screen key data is not included in the first area, as a result of the inspection of the fourth step, from the second step without performing a process corresponding to the input touch screen key data. And a sixth step of performing an operation.

1 illustrates a PDA phone showing a user interface window associated with a phone call.

2 is a block diagram of a PDA phone according to the present invention.

3 is a transition diagram showing a state related to a call according to the present invention.

4 is a flowchart of processing an interrupt in response to a call connection state according to the present invention;

5 is a flowchart of processing a key input of a user according to the present invention.

6 is an example of an area where an icon performing a specific function is located on a touch screen in accordance with the present invention.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

2 is a block diagram of a PDA phone according to the present invention.

The PDA phone is provided with a wireless communication module 203. The wireless communication module 203 performs filtering, down-converting, etc. on a signal received through an antenna, and performs a baseband. The received signal is digitized and output to the communication module processor 207 of the central processing unit 210. In addition, the wireless communication module 203 performs up-converting, filtering, and the like on the transmission signal from the communication module processing unit 207 and wirelessly outputs it through the antenna.

In addition, the voice processor 221 provided in the PDA phone digitally converts and compresses a user's voice input through a microphone, outputs the voice to the communication module processor 207, and outputs the voice of the other user's voice from the communication module processor 207. The digital signal is processed and converted into an audible audio signal, which is then heard by the speaker.

The display window 215 displays the progress of various programs of the PDA phone and displays the user's key input data. In addition, the display window 215 includes a touch screen 223, and the touch screen 223 detects a user's touch and converts it into coordinates to generate touch key data.

The hardware button input processing unit 213 provided in the central processing unit 210 processes hardware button key data of the user transmitted through the hardware button 219.

The carrier detector 201 determines a call connection state by inspecting a carrier of the wireless communication module 203. In general, the wireless communication module 203 activates the carrier (ON) when entering the busy state (see steps 303-> 307 and 305-> 307 of FIG. 3). (See step 307-> 309 of Fig. 3). Therefore, when a call is made or the user makes a call or ends a call, the carrier is transmitted to the wireless communication module 203. The connected carrier detector 201 detects a change in the state of the carrier and notifies the CPU 210 using an interrupt line. The carrier detector 201 may correspond to a Modem Status Register portion of a general UART (Universal Asynchronous Receiver / Transmitter), and only when there is a change of carrier, the central processing unit 210 It serves as a notification.

The memory 217 may include a RAM, a ROM, and a flash memory. The memory 217 stores various programs for operating a PDA phone and a plurality of data according to the use of the PDA phone. . The memory 217 also stores a program for controlling a locking method in which a PDA phone automatically sets a touch screen lock according to an embodiment of the present invention.

The central processing unit 210 performs the overall control operation of the PDA phone. In particular, the interrupt processing unit 205 of the central processing unit 210 according to the change of the call connection state (carrier OFF-> ON / ON-> OFF) of the current PDA phone provided from the carrier detector 201 (TS) ) Toggle lock flag on / off. The display window processing unit 209 displays or displays an indication that the touch screen auto locking function is set on the display window 215 in response to the flag setting / release operation of the interrupt processing unit 205. Is deleted from the display window 215.

In addition, when the touch screen input processing unit 211 included in the central processing unit 210 inputs TS key data of the user from the touch screen 223, a corresponding process is performed. According to the present invention, when the TS lock flag is set (ON), the touch screen input processing unit 211 does not process the touch key data even if it is input. In addition, the touch screen input processing unit 211 does not process the input TS. The coordinate value of the key data is inspected, and if the coordinate value is within the preset area of the touch screen 223, the preset operation is performed such as turning off the TS lock flag.

On the other hand, a state related to a call is a state in which a call is not largely called (hereinafter referred to as "child state") 301, a state in which a call is received from the other party (hereinafter referred to as "called state") 303, a call key Can be divided into a pressed state (hereinafter referred to as " outgoing state ") 305, a busy state 307, and a call termination state 309 (see Fig. 3). The PDA phone of the present invention performs an automatic locking operation that does not process the touch screen input.

4 is a flowchart of processing an interrupt in response to a call connection state according to the present invention. Hereinafter, a description will be given with reference to FIGS. 2 to 3.

When the carrier detector 201 detects that the carrier state of the wireless communication module 203 is changed, the carrier detector 201 notifies the CPU 210 using an interrupt line. When the CPU 210 reports the carrier change from the interrupt processor 205, it checks whether the current carrier state is activated (401). (403) If the carrier state is activated (ON), it is currently busy. In the state 307, the central processing unit 210 checks whether the user has set the touch screen auto lock mode in advance. (405) If the user has not set the touch screen auto lock mode, the interrupt processing routine ends. In operation 405, the user may select the touch screen auto lock mode so that the user does not operate the touch screen auto lock mode.

In step 405, if the user has previously set the touch screen auto lock mode, the central processing unit 210 sets (ON) the TS auto lock flag (407) and the TS key input through the touch screen 223. Prevent data from being processed. In addition, the central processing unit 210 displays a display window 215 indicating that the touch screen automatic locking function is set and informs the user (409) and terminates the interrupt routine.

Meanwhile, in step 403, if the carrier state is not activated (OFF), that is, the call termination state 309, the central processing unit 210 releases the TS auto lock flag (OFF), and thus (411) the touch screen. TS key data input through 223 is processed. The CPU 210 deletes the touch screen automatic locking function setting from the display window 215 (413) and terminates the interrupt routine.

5 is a flowchart of processing a key input of a user according to the present invention.

Hereinafter, a description will be given with reference to FIGS. 2 to 4.

First, FIG. 5 assumes that a PDA button is provided with a hardware button, and also assumes that a call function and an end function are performed in one call button. In some cases, the start button and the end button may be provided separately.

Looking at the procedure of the reception operation, the user can answer the incoming call using the touch screen 223 or using the hardware button 219. When answering a call using the hardware button 219, it is the same as the reception operation procedure of a normal PDA phone. That is, pressing any hardware button among the hardware buttons 219 provided in the PDA phone can answer the call.

If the user presses a hardware key button corresponding to origination / end to answer the call, the central processing unit 210 recognizes this and sets 503 the busy state 307 currently set to OFF to ON. , 513 connects the incoming call. (515) Of course, when the call is in a busy state, the central processing unit 210 will set (ON) the TS auto-lock flag.

The user can answer the call using the touch screen 223. When key data is input through the touch screen 223, the current TS auto-lock flag is inactive (OFF) (see 303 of FIG. 3), so that the CPU 210 responds to the input touch key data. In operation 519, the user can answer the call. (Same operation as the normal operation.) The user may answer the call using a TS call / end key described below.

Next, let's look at the procedure of originating operation. When making a call using the hardware button 219, it is the same as the procedure of the outgoing operation of a normal PDA phone. If the user presses the hardware button corresponding to the outgoing / ending to make a call, the central processing unit 210 recognizes this, and (503) sets the busy state (307) that is currently set to OFF, (513) Connect the call to the most recently dialed phone number. (515)

When the user makes a phone call using the touch screen 223, key data is input through the touch screen 223. (501) Since the current TS auto-lock flag is released (OFF) (see 305 of FIG. 3). The central processing unit 210 performs an operation corresponding to the input TS key data, so that the user can answer the call (519). (Same operation as the normal operation.) You can also call the most recently dialed phone number using.

When the transmission and reception operations are completed, the CPU 210 transitions to the busy state (see 307 of FIG. 3). When the user enters the busy state 307, as described above with reference to FIG. 4, the central processing unit 210 activates the TS auto lock flag and displays the TS auto lock setting on the display window 215.

In addition, the central processing unit 210 does not process key data through the touch screen 223 while the TS auto lock flag is activated (ON). Therefore, even when the user comes into contact with the touch screen 223 and the face of the user during a call, the user does not process it by the TS key input, thereby preventing malfunction of the PDA phone.

It may happen that the user wants to release the TS auto lock function during the call. For example, searching a phone book during a call or receiving an ARS. In this case, the user may touch the TS auto unlocking icon provided in the predetermined area of the touch screen 223. Then, the CPU 210 deactivates (OFF) the TS auto lock flag because the coordinate value of the key data input to the touch screen 223 is within the TS auto lock release icon region, and turns off the TS auto lock function. The setting is deleted from the display window 215. In operation 519, the CPU 210 performs an operation corresponding to the touch screen key data desired by the user. Of course, a predetermined hardware button may be used to release the TS auto-locking function during a call (not shown in FIG. 5).

Next, let's look at the procedure when the call ends. Since the procedure of ending the call using the hardware key button 219 is the same as that of a conventional PDA phone, description thereof is omitted.

When ending a call using the touch screen 223, the user touches a preset icon (TS auto unlock icon) to release the TS auto lock function and then ends a call by operating a key on the touch screen. In addition, according to an exemplary embodiment of the present invention, the user may terminate the call by touching the TS call end icon provided in the preset area of the touch screen 223. Of course, it is natural that the user can use a preset hardware button (e.g., hardware call / end button) to terminate the call (see step 503).

In addition, according to another exemplary embodiment of the present invention, the user may end the call by touching the TS call / end icon provided in the preset area of the touch screen 223. (See steps 527 and 511.) The function of the origination / end icon performs the same function as the hardware origination / end key that is provided in the conventional PDA phone. (See step 507 and below.) Therefore, as described above, the user touches the TS origination / end icon. Call or answer a call (see steps 519 and 527).

6 is a diagram illustrating an example of an area in which an icon performing a specific function is located on a touch screen according to the present invention. Hereinafter, a description will be given with reference to FIGS. 2 to 5.

Reference numeral 223 denotes a touch screen, and reference numeral 607 denotes a case wrapped around the touch screen 223. Reference numerals A, B, C, and D are areas where the TS auto-lock release icon, the TS call end icon, and the TS call / end icon are located according to an embodiment of the present invention. As shown, the A, B, C and D regions are located at the upper left, upper right, lower left and lower right of the display window 223, respectively.

In general, the area of reference numerals A, B, C, and D displayed on the touch screen 223 due to the mechanical characteristics of the PDA includes the user's face (including an object having a relatively smooth curved surface, such as the user's face). It is hard to get in touch with. This is because the case 607 is physically wrapped around the touch screen 223. Also, in order to protect the touch screen 223, the case 607 has a shape that protrudes convexly as compared to the surface of the touch screen 223. Therefore, before the user's face contacts the areas A, B, C, and D, the user's face first contacts the case part near the area.

As described above, according to the present invention, since the touch screen lock is automatically set / released according to the call connection state of the PDA phone, even if the touch screen and the user's face come into contact with each other, the touch screen is not processed as a key input to prevent malfunction of the PDA phone. It is effective to prevent.

In addition, as described above, the touch screen lock mode is automatically set / released, and when a predetermined key data is input in a call state, the touch screen is recognized to release the touch screen lock or terminate the call, maximizing user convenience. do.

In addition, the present invention has an icon for performing a function for releasing the touch screen lock mode or ending the call in the area where the user's face is hard to contact on the screen of the PDA phone, effectively preventing malfunction of the PDA phone There is an advantage to this.

To implement such a PDA phone, only a simple hardware circuit needs to be added, and a simple and effective algorithm can expect fast and accurate processing power.

In addition, there is an advantage that the user can conveniently use the characteristics of the general mobile phone use.

Claims (11)

A method of processing key data input by a portable personal digital assistant having a mobile telephone function, A first step of setting a touch screen auto lock mode when a call is started; And When the call is terminated, the second step of releasing the touch screen automatic locking mode, During the call, A third step of inspecting key data input from the outside; A fourth step of maintaining the set touch screen automatic locking mode if the key data inputted from the outside is not based on a preset appointment as a result of the checking of the third step; And And a fifth step of releasing the touch screen automatic locking mode if the key data inputted from the outside is based on a predetermined appointment as a result of the checking of the third step. How key data is processed. The method according to claim 1, The first step and the second step, And detecting a change in a carrier state of a communication module that performs the mobile phone function, and is performed by an interrupt process. The method according to claim 1, The fifth step, When the key data input from the outside is input from the touch screen and the coordinate value of the key data is included in the first area preset on the touch screen, the touch screen automatic locking mode is released. The input key data processing method of the portable personal digital assistant, characterized in that. The method according to claim 1, The fifth step, And if the key data inputted from the outside is input from a predetermined hardware button, canceling the touch screen automatic locking mode. The method according to claim 3, The test result of the third step, If the key data input from the outside is input from the touch screen and the coordinate value of the key data is included in the second area preset on the touch screen, a sixth step of terminating the call is further performed. Input key data processing method of a portable personal information terminal comprising a. The method according to claim 5, And a preset second area on the touch screen is an area where a call origination / end icon is located. The method according to any one of claims 3, 5 and 6, The preset area on the touch screen, The input key data processing method of the portable personal digital assistant, characterized in that located on the upper left, upper right, lower left and lower right of the display window. A method of processing key data input by a portable personal digital assistant having a telephone function, the method comprising: A first step of setting a touch screen auto lock flag when entering a busy state; A second step of checking whether the touch screen auto lock flag is set when key data is input through a touch screen; A third step of performing an operation corresponding to the input touch screen key data if the touch screen auto lock flag is not set; A fourth step of checking a coordinate value of the input touch screen key data when the touch screen auto lock flag is set; As a result of the inspection of the fourth step, if the coordinate value of the input touch screen key data is included in the first area preset on the touch screen, the touch screen lock flag is released and the operation from the second step is performed. Performing a fifth step; And If the coordinate value of the input touch screen key data is not included in the first area as a result of the inspection of the fourth step, the operation from the second step is performed without performing a process corresponding to the input touch screen key data. And a sixth step of performing the input key data processing of the portable personal digital assistant. The method of claim 8, As a result of the inspection in the fourth step, if the coordinate value of the touch screen key data is included in the second area preset on the touch screen, And a seventh step of terminating the call. The method of claim 9, The second area preset on the touch screen, Input key data processing method of the portable personal information terminal, characterized in that the area where the call origination / end icon is located. The method according to any one of claims 8 to 10, The preset area on the touch screen, The input key data processing method of the portable personal digital assistant, characterized in that located on the upper left, upper right, lower left and lower right of the display window.