KR101229405B1 - Touch pad for portable terminal and metohd using it - Google Patents

Abstract

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a touch pad device, comprising: a plurality of light emitting elements installed at regular intervals, a plurality of light receiving elements installed at corresponding positions to receive light sources irradiated from the light emitting elements in a lattice manner, and light receiving of the light sources And a detector for checking whether the detector detects the received signal and the light receiving signal checked by the detector, and performs a corresponding key input, checking whether the touch pad is driven, checking a mode when the touch pad is driven, A process of checking a preset compensation value according to a corresponding mode, a process of compensating for a corresponding touch value when a touch by a user is detected, and determining an compensated touch value to perform an operation according to the touch value Including the process, put separate input modes for left-handed and right-handed users and apply compensations to them. As always possible to perform a smooth key action and may consequently prevent a malfunction of the device in advance.

Portable terminal, touch pad, light emitting element, light receiving element, compensation value, weight, input

Description

TOUCH PAD FOR PORTABLE TERMINAL AND METOHD USING IT}

1 is a perspective view of a portable terminal having a touch pad device according to the present invention;

2 is a main configuration diagram of a touch pad device according to the present invention;

3 is a block diagram of a portable terminal according to the present invention; And

4 is a flowchart illustrating a control method of a touch pad device according to the present invention;

The present invention relates to a touch pad which is a data input means of a portable terminal. In particular, when a left hand or a right hand is selectively used, a corresponding compensation value according to a key input is set according to a direction used, so that a typographical error of a data is generated. The present invention relates to a touch pad device for a portable terminal configured to prevent an input and a control method thereof.

In general, a portable terminal performs a voice communication wirelessly with a counterpart owning another terminal, or functions as a complex terminal connected to a wireless Internet service provider to use Internet contents or perform various additional functions such as a game. Doing.

The portable terminal described above includes a plurality of cover buttons as data input means. The key button is composed of a metal dome structure for performing a mechanical contact operation, there is a limit in reducing the volume of the terminal. Therefore, in recent years, a touch pad device is often used.

Since the above-described touch pad hardly generates a distance from the main board, it can help to reduce the overall volume of the terminal, and can be utilized as a multi-function key button by displaying various key buttons according to the corresponding mode.

In general, the touch pad device has a resistive film type, a capacitive type, an ultrasonic type, an electromagnetic induction type, and an optical sensor type. In particular, the optical sensor system has a lattice-type sensing structure by providing light emitting devices on one side of the touch panel at regular intervals and installing light receiving devices on a corresponding target side. Therefore, when the user touches the touch pad portion corresponding to the corresponding key button of the terminal, the target grating portion is pressed to recognize a state in which the light receiving element does not receive the light source irradiated by the light emitting element as a predetermined detector. It will perform an action action.

However, as described above, the general touch pad configuration that is configured does not distinguish the way of touching using the user's left or right hand. For example, a user who uses the right hand mainly uses the thumb of the right hand to perform key input, while a user who uses the left hand mainly uses the thumb of the left hand to perform key input. The recognition rate is significantly lowered, causing a malfunction of the terminal due to a touch error such as no data input.

In order to solve the problems as described above, an object of the present invention is a touch pad device and a control method of a portable terminal configured to perform a constant and accurate key input always according to the key input method of the left hand user and the right hand user To provide.

Another object of the present invention is to increase the recognition rate by setting the corresponding compensation value according to the touch method of the right hand user and the left hand user with a simple setting, and as a result, the touch pad device of the portable terminal configured to prevent the occurrence of malfunction of the terminal in advance; The control method is provided.

In order to solve the above object, the present invention provides a plurality of light emitting elements installed at regular intervals, and a plurality of light receiving elements installed at a corresponding position to receive light sources irradiated from the light emitting elements in a lattice manner. And a detector for inspecting whether or not the light source is received, and a controller for determining a light reception signal inspected by the detector to perform a corresponding key input. And checking a mode when the touch pad is driven, checking a preset compensation value according to the mode, and when a touch is detected by the user, performing a compensation on the touch value and compensated touch. Determining a value and performing an operation according to a corresponding touch value.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. However, if it is determined that the gist of the present invention may be unnecessarily blurred, detailed description thereof will be omitted.

In describing the present invention, a slide type portable terminal is illustrated and a touch pad device applied thereto is described. However, the present invention is not limited thereto and may be applicable to various types of terminals or electronic products to which a touch pad device is applied.

1 is a perspective view of a portable terminal 100 having a touch pad device 10 according to the present invention, which slides in the longitudinal direction of the terminal 100 from the main body 110 and the main body 110. A slide body 120.

The touch pad device 10 according to the present invention is installed as a data input means on the surface of the main body 110 when the slide body 120 is opened. The microphone device 111 is installed below the touch pad device 10.

A display device 121 is installed on the slide body 120 over the front surface, and a cap assembly 122 including a plurality of key buttons is installed below the display device 121. The keypad assembly 122 may also be replaced with the touch pad device according to the present invention, but since it is always exposed to the outside, a mechanical key button is used. The speaker device 123 is installed above the display device 121.

Therefore, when the user inputs data, the key action is opened by touching the corresponding key button displayed on the touch pad device 10 after opening the slide body 120 from the main body 110 as shown in FIG. 1. May be performed.

FIG. 2 is a diagram illustrating a main part of a touch pad device according to the present invention, in which a plurality of light emitting elements 12 and a plurality of light receiving elements 14 are installed at corresponding positions. As shown in FIG. 2, the light emitting element 12 is disposed at a predetermined interval on one side and a neighboring side to constitute a light emitting unit 11, and the light receiving element 14 has the remaining side and the neighboring side thereof. Are installed at regular intervals to form the light-receiving unit 13. The unit light emitting element 12 is disposed to correspond one-to-one with the unit light receiving element 14 and is disposed so that a light source irradiated from the light emitting element 12 receives the corresponding light receiving element 14. The distance between the light emitting element and the light receiving element will generally be about 6 mm.

Preferably, the light emitting elements are arranged in a grid form with the corresponding light receiving elements so as to have a predetermined coordinate value. Therefore, the position at which the user touches the touch pad is a detector that recognizes a coordinate value at which the light source irradiated from the light emitting element is not received by the light receiving element, and transmits it to the controller to take a key action. More preferably, an infrared LED is used as the light emitting element 12, and a photo sensor may be used as the light receiving element 14.

According to the present invention, a right hand input mode and a left hand input mode may be selected according to the user's mode switching. As shown in FIG. 2, when the user touches the corresponding character area of the touch pad with his right hand (area A in FIG. 2), and when the same corresponding character of the touch pad is touched with the left hand (area B in FIG. 2) The sensing coordinate values formed by the light emitting elements appear differently.

For example, when touching with the right hand, the coordinate values are (L2, F2), (L2, F3), (L3, F2), (L3, F3), (L3, F4), (L4, F3), ( It has ten coordinate values of L4, F4), (L4, F5), (L5, F4), and (L5, F5). Also, when touching with the left hand, the coordinate values are (L2, F4), (L2, F5), (L3, F3), (L3, F4), (L3, F5), (L4, F2), (L4, It has ten coordinate values of F3), (L4, F4), (L5, F2) and (L5, F3).

Among the above coordinate values, the coordinate values of (L2, F2), (L2, F3), (L3, F2), (L4, F5), (L5, F4), (L5, F5) are touched with the right hand. This area is recognized only when it is input by the left hand. Therefore, when set to the mode for input by the right hand, the above-mentioned coordinate values (L2, F2), (L2, F3), (L3, F2), (L4, F5), (L5, F4), (L5, F5) By setting the weighted compensation value to), more smooth key recognition can be achieved.

Similarly, among the above coordinate values, the coordinate values of (L2, F4), (L2, F5), (L3, F5), (L4, F2), (L5, F2), (L5, F3) are touched with the left hand. This area is only recognized when the right hand is input. Therefore, when set to the mode for input by the left hand, the above-mentioned coordinate values (L2, F4), (L2, F5), (L3, F5), (L4, F2), (L5, F2), (L5, F3) By setting the weighted compensation value to), more smooth key recognition can be achieved.

3 is a block diagram of a portable terminal according to the present invention, the control unit (MPU: Micro-Processor Unit) 300 of the terminal 100 controls the overall operation of the terminal 100, and in addition to the present invention The touch pad driver 302 is controlled. That is, the compensation value of the corresponding key input area is set differently according to the input mode (left hand mode or right hand mode) set in the terminal, and the operation of the terminal according to a smooth and accurate key action may be performed.

Hereinafter, the RF module 305, the modem unit 306, the memory 301, the display unit 303, and the codec 304 correspond to well-known terminal components and will be omitted.

4 is a flowchart illustrating a method of controlling a touch pad device according to the present invention, and performs step 401 of checking whether the touch pad of the terminal is driven. After step 401, step 403 of checking the preset character input mode of the terminal is performed. For example, it is checked whether the input mode is a right hand input mode or a left hand input mode, and checks different compensation values according to the mode. As described above, the compensation coordinate values according to the left hand input mode and the right hand input mode will be different from each other.

Thereafter, step 405 is performed to check whether a key action has occurred by the user. In this case, the user may perform an operation of touching the touch pad device using the left hand or the right hand according to the corresponding mode. Thereafter, step 407 is performed to perform compensation according to the mode of the corresponding touch value in step 407. For example, in the right hand mode, a weighted compensation value may be applied to an area other than the touched area in the left hand mode to more sensitively respond to a user's touch operation. Thereafter, the method determines a compensated touch value (step 409), and performs step 411 to perform a corresponding operation. The step 411 may include, for example, an overall key action operation for displaying the touched corresponding letter / number on the display device of the terminal or performing a corresponding function of the terminal.

Obviously, there are many ways within the scope of the claims to modify these embodiments. In other words, there can be many other ways in which the invention may be practiced without departing from the scope of the following claims.

According to the present invention, it is possible to always perform a smooth key action by setting a separate input mode for a left hand user and a right hand user and applying a compensation value thereof, and as a result, there is an effect of preventing a malfunction of the terminal in advance.

Claims (8)

A plurality of light emitting devices disposed on at least one side at regular intervals to irradiate light sources; At least one light receiving element installed on a side corresponding to a side at which the light emitting element is installed and installed to receive a light source irradiated from the light emitting element in a lattice manner; A detector for inspecting whether a light receiving element receives a light source irradiated from the light emitting element according to a touch; And And a controller configured to set a compensation value for the weighted coordinate area according to the left hand and the right hand use mode for the corresponding area, and determine an enlarged touch area for the area where the compensation value is set according to the user's left or right hand use mode, respectively. Touch pad device, characterized in that. The method of claim 1, The light emitting device is an infrared LED, the light receiving device is a touch pad device, characterized in that the photo sensor. The method of claim 1, The coordinates of the grid to which the compensation value is applied is a coordinate that is not applied to the left hand and right hand use mode at the same time. The method of claim 1, The touch pad device is used as a key input means of the portable terminal. A plurality of light emitting elements installed at regular intervals, a plurality of light receiving elements installed at a corresponding position to receive light sources irradiated from the light emitting elements in a lattice manner, a detector for inspecting whether the light sources are received, and the detectors In the control method of the touch pad device including a control unit for determining the received light receiving signal to perform a corresponding key input, Checking whether the touch pad is driven; Checking a mode when the touch pad is driven and checking a preset compensation value according to the mode; Performing a compensation for a corresponding touch value when a touch by a user is detected; And Determining a compensated touch value and performing an operation according to the touch value. 6. The method of claim 5, The compensation value is applied to at least one coordinate value of the lattice method for receiving the light source irradiated from the light emitting element from the light receiving element. The method of claim 6, The mode is a left hand mode or a right hand mode. The method of claim 7, wherein The coordinate values to which the compensation value is applied do not coincide with each other in the left hand mode and the right hand mode.

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