KR20060068492A - Wireless telecommunication terminal and its method for sensing the opening and shutting of cover using variable resistor - Google Patents

Abstract

1. TECHNICAL FIELD OF THE INVENTION

The present invention relates to a wireless communication terminal having an open / close detection function using a variable resistor and a method thereof.

2. The technical problem to be solved by the invention

The present invention, by detecting the opening and closing of the folder (cover) by using a variable resistor whose resistance value changes as the folder (cover) is opened and closed in the wireless communication terminal, to prevent the opening and closing recognition malfunction caused by external magnetic force The present invention provides a wireless communication terminal having a switching function using a variable resistor and a method thereof.

3. Summary of Solution to Invention

The present invention provides a wireless communication terminal, comprising: a variable resistor whose resistance value changes as a folder is opened and closed; Voltage output means for outputting a corresponding voltage level in accordance with the resistance value of the variable resistor; And control means for detecting opening and closing of the folder according to the voltage level received from the voltage output means and performing a corresponding operation.

4. Important uses of the invention

The present invention is used in a wireless communication terminal.

Wireless communication terminal, variable resistor, open / close detection, folding type, voltage level, hinge

Description

Wireless telecommunications terminal and its method for sensing the opening and shutting of cover using variable resistor}             

1 is a perspective view of an embodiment of a general clamshell wireless communication terminal;

2 is a diagram illustrating a method of detecting opening and closing in a conventional clamshell wireless communication terminal.

3 is a configuration diagram of an embodiment of a wireless communication terminal having an open / close detection function using a variable resistor according to the present invention;

4A and 4B illustrate an embodiment of a wireless communication terminal having an open / close detection function using a variable resistor according to the present invention;

5 is a flowchart illustrating an opening and closing detection method using a variable resistor in a wireless communication terminal according to the present invention.

* Explanation of symbols for the main parts of the drawings

30: variable resistor 31: wireless transmitting and receiving device

32: central processing unit (MSM) 33: codec

34: storage device 35: audio output device (speakers)

36: display device (LCD) 37: input device (keypad)

38: voice input device (microphone) 39: voltage output device

The present invention relates to a wireless communication terminal having an open / close detection function using a variable resistor, and more particularly, to a folder using a variable resistor whose resistance value changes as the folder (cover) is opened and closed in the wireless communication terminal. The present invention relates to a wireless communication terminal and a method having an open / close detection function using a variable resistor for preventing an open / close recognition malfunction caused by external magnetic force by detecting the opening / closing of a cover part.

In the present invention, the wireless communication terminal is a voice communication, such as a mobile communication terminal, a PCS (Personal Communication Service) terminal, PDA (Personal Digital Assistant), smart phone, next-generation mobile communication (IMT-2000) terminal, wireless LAN terminal, A portable terminal capable of transmitting and receiving text and video data.

Advantages of the wireless communication terminal may be various, but above all, it is said that the greatest advantage is in the mobility provided to the user who is calling. Due to this mobility, the number of wireless communication subscribers has increased exponentially, and in recent years, wireless communication terminals are widely used by the general public.

In general, wireless communication terminals are classified into a folding type, a flip type, a slide type, and the like according to an opening and closing method. Among them, the foldable terminal is a form in which a cover part provided with a display part and a main part provided with a main printed circuit board and a keypad are folded, and are opened and closed by lifting and lowering the cover part.

Hereinafter, with reference to Figure 1 will be described the structure and the opening and closing process of the folder-type wireless communication terminal according to the prior art.

1 is a perspective view of an embodiment of a general folding wireless communication terminal.

As shown in FIG. 1, a general foldable wireless communication terminal is lifted from an upper portion of the main body portion 20 and the main body portion 20 provided with a keypad, a printed circuit board, or the like. The cover part is made of a cover part 10 that opens and closes the keypad part and includes a display part.

Conventionally, the manner of detecting the opening and closing in the clamshell wireless communication terminal will be described in more detail with reference to FIG. 2.

2 is a diagram illustrating a method of detecting opening and closing in a conventional clamshell wireless communication terminal.

As shown in FIG. 2, the conventional folding type wireless communication terminal is formed by the magnetic generating means (magnet) 21 provided in the cover part 10 and the magnetic sensing sensor 22 provided in the main body part 20. Detect opening and closing At this time, the magnetic generating means 21 for generating a magnet is located on one side of the cover 10, the magnetic sensor 22 is one side of the main body 20, that is, when the cover 10 is closed In the magnetic generating means 21 is located in the portion capable of detecting the magnetism.

That is, in the conventional clamshell wireless communication terminal, when the cover part 10 is covered (closed), the magnetic sensing sensor 22 provided in the main body part 20 is provided with magnetic generating means 21 provided in the cover part 10. Detect the magnetic force generated from). The magnetic sensor 22 transmits a signal (on signal, high signal) corresponding to the detected magnetic force to the central processing unit MSM. Then, the central processing unit MSM detects that the cover 10 is closed and performs an operation such as deactivating the display means. At this time, when the cover 10 is closed in order to terminate the call, a function of blocking a call path is performed together.

On the other hand, if the cover 10 is lifted by the user (opened), the magnetic sensor 22 provided in the main body 20 can no longer detect the magnetic force, and corresponding signals (off signal, low signal) ) To the central processing unit (MSM). Then, the central processing unit MSM detects that the cover unit 10 is opened and performs an operation such as activating the display means and outputting a background screen. At this time, when the cover unit 10 is opened to receive a call, an operation of connecting a call path, and when the cover unit 10 is opened to transmit a call, an operation of outputting a standby screen is performed together.

However, this conventional folder opening and closing recognition method uses a magnetic generating means (magnet) 21 and the magnetic sensor 22 has a problem that can cause a malfunction due to external magnetic force.

The present invention has been proposed to solve the above problems, by detecting the opening and closing of the folder (cover) by using a variable resistor in which the resistance value changes as the folder (cover) is opened and closed in the wireless communication terminal, SUMMARY OF THE INVENTION An object of the present invention is to provide a wireless communication terminal and a method thereof having an open / close detection function using a variable resistor, in order to prevent the open / close recognition malfunction occurring by the same.

Other objects and advantages of the present invention can be understood by the following description, and will be more clearly understood by the embodiments of the present invention. Also, it will be readily appreciated that the objects and advantages of the present invention may be realized by the means and combinations thereof indicated in the claims.

The apparatus of the present invention for achieving the above object, in a wireless communication terminal, a variable resistor whose resistance value changes as the folder is opened and closed; Voltage output means for outputting a corresponding voltage level in accordance with the resistance value of the variable resistor; And control means for detecting opening and closing of the folder according to the voltage level received from the voltage output means and performing a corresponding operation.

On the other hand, the method of the present invention, in the wireless communication terminal using a variable resistance in the opening and closing method, resistance value change step of changing the resistance value as the folder is opened and closed; A voltage output step of outputting a corresponding voltage level according to the changed resistance value; And an opening / closing detection step of detecting opening and closing of the folder by detecting a change in the voltage level.

The above objects, features and advantages will become more apparent from the following detailed description taken in conjunction with the accompanying drawings, whereby those skilled in the art may easily implement the technical idea of the present invention. There will be. In addition, in describing the present invention, when it is determined that the detailed description of the known technology related to the present invention may unnecessarily obscure the gist of the present invention, the detailed description thereof will be omitted. Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

3 is a configuration diagram of an embodiment of a wireless communication terminal having an open / close detection function using a variable resistor according to the present invention.

As shown in FIG. 3, the wireless communication terminal having an open / close detection function using a variable resistor according to the present invention includes a wireless transmission and reception device 31 and a folder (cover portion 10) for transmitting and receiving a signal wirelessly through an antenna. ) Is controlled by driving and controlling the variable resistor 30 whose resistance value is changed as it is opened and closed, a voltage output device 39 for outputting a corresponding voltage level according to the resistance value of the variable resistor 30, and the wireless communication terminal. In addition, the central processing unit (MSM) 32 for detecting the opening and closing of the folder (cover portion 10) in accordance with the voltage level received from the voltage output device 39 and performing the corresponding operation, the central processing According to the control of the device (MSM) 32, the signal received from the wireless transmission and reception device 31 is converted into voice and output to the voice output device (speaker) 35, and the voice input device (microphone) 38 Converts the input voice into a signal A codec (33) for transmitting to the central processing unit (MSM) 32 to be transmitted through the wireless transmitting and receiving device 31, a program and a file system for driving the wireless communication terminal (image, character) Storage device 34 for storing the icon, a voice output device (speaker) 35 for outputting the voice received from the codec (CODEC) 33, and the central processing unit (MSM) 32 A display device (LCD) 36 for outputting a screen according to the control of an input device, an input device (keypad) 37 for receiving a telephone number, menu selection information, etc. through a button, and a voice for receiving the codec A voice input device (microphone) 38 for delivery to the phone 33;

Here, the variable resistor 30 is a resistor capable of changing the resistance value in an arbitrary range, and is also referred to as a regulating resistor. In general, the variable resistor has a contact that can move with respect to the resistor as one terminal, and the resistance value is changed by changing a range between the terminals of the resistor and the other terminal. In particular, the variable resistor 30 changes in the output value of the voltage output device 39 by changing the resistance value as the folder is opened and closed.

That is, as shown in Figure 4a, the variable resistor 30 is provided with a cylindrical resistor and a metal plate in contact with the resistor in the hinge portion 40, the resistance value as the folder is opened and closed. This changes.

Hinge portion 40 is a structure for smoothing the opening and closing of the folder at the bottom of the folder (cover portion 10), the variable resistor is located in the fixed portion of the hinge portion 40, the voltage output device as a general conductor Connected with 39. At this time, grooves are formed above and below the variable resistor so that the variable resistor 30 is fixed to the hinge portion 40. In addition, as shown in Figure 4a, looking at the cross section of the variable resistor 30 and the cross section of the hinge portion 40, the connection portion is a square, it is easy to assemble and resistant to wear.

On the other hand, when the folder (cover portion 10) is opened and closed, the hinge portion 40 is rotated, so that the metal plate in contact with the resistor is moved along the resistor. In this way, the variable resistance circuit is formed by connecting the end of the resistor and the metal body. Then, as the metal plate moves away from the initial point of the resistor as the folder (cover 10) is lifted (opened), the resistance value increases, and the metal plate as the folder (cover 10) is covered (closed). As you approach this initial point, the resistance decreases.

As shown in FIG. 4B, the voltage output device 39 outputs a voltage level corresponding to the resistance value of the variable resistor 30. That is, the variable resistor 30 increases in resistance when the folder (cover 10) is lifted (opened) and decreases in resistance when the folder (cover 10) is covered (closed). Accordingly, the voltage output device 39 outputs a low voltage when the folder (cover 10) is lifted (opened) according to the resistance value of the variable resistor 30, and the folder (cover 10) is output. When closed (closed), a high voltage is output. At this time, the voltage output from the voltage output device 39 is input to the general-purpose input / output port (GPIO) of the central processing unit (MSM) 32, and goes through analog to digital convert (Analog to Digital Convert).

Then, the central processing unit (MSM) 32 detects the opening and closing of the folder (cover portion 10) according to the voltage level received from the voltage output device 39 and performs a corresponding operation. At this time, the central processing unit (MSM) 32 detects that the folder (cover part 10) is lifted (opened) when the voltage level received from the voltage output device 39 decreases below a predetermined value. If the voltage level has increased above the preset value, it is detected that the folder (cover portion 10) is covered (closed).

In addition, the central processing unit (MSM) performs a corresponding operation according to the state of the wireless communication terminal at the time when the opening and closing of the folder (cover portion 10). That is, when the folder (cover portion 10) is opened in a situation where a call connection request is received, an operation of connecting a call path is performed, and when the cover portion 10 is opened in a standby state, an operation of outputting a standby screen. If the folder (cover 10) is closed during a call, the operation of blocking the call path is performed.

Referring to Figure 5 will be described in detail once again the overall operating process of the present invention.

5 is a flowchart illustrating an opening and closing detection method using a variable resistor in a wireless communication terminal according to the present invention.

First, the voltage output device 39 of the wireless communication terminal outputs a corresponding voltage level according to the resistance value of the variable resistor that changes as the folder is opened and closed (501). That is, the voltage output device 39 outputs a low voltage when the folder (cover 10) is lifted (opened) according to the resistance value of the variable resistor 30, and the folder (cover 10) is output. When closed (closed) it outputs a high voltage.

Then, the central processing unit (MSM) 32 of the wireless communication terminal detects the change in the voltage level received from the voltage output device 39 to detect the opening and closing of the folder (cover portion 10) (502). . At this time, the central processing unit (MSM) 32 detects that the folder (cover portion 10) is lifted (opened) when the voltage level received from the voltage output device 39 decreases below a predetermined value. If the voltage level increases above the preset value, it is detected as closed (closed).

Then, according to the state of the current wireless communication terminal performs an operation according to the opening and closing of the folder (cover portion 10) (503). That is, when the folder (cover portion 10) is opened in a situation where a call connection request is received, an operation of connecting a call path is performed, and when the cover portion 10 is opened in a standby state, an operation of outputting a standby screen. If the folder (cover 10) is closed during a call, the operation of blocking the call path is performed.

The present invention described above is capable of various substitutions, modifications, and changes without departing from the technical spirit of the present invention for those skilled in the art to which the present invention pertains. It is not limited by the drawings.

The present invention as described above, by detecting the opening and closing of the folder (cover portion) using a variable resistor that changes the resistance value as the folder (cover portion) is opened and closed in the wireless communication terminal, malfunction of opening and closing recognition caused by external magnetic force There is an effect that can prevent.

In addition, the present invention does not have to include a magnetic generating means (magnet) and a magnetic sensing sensor used to detect the opening and closing of the folder in the conventional wireless communication terminal, thereby reducing the cost, and the mechanism and the printed circuit board (PCB) has the effect of saving the space occupied by the magnetic generating means (magnet) and the magnetic sensor.

Claims (7)

In a wireless communication terminal, A variable resistor whose resistance value changes as the folder is opened and closed; Voltage output means for outputting a corresponding voltage level in accordance with the resistance value of the variable resistor; And Control means for detecting the opening and closing of the folder in accordance with the voltage level received from the voltage output means for performing the corresponding operation Wireless communication terminal having an open and close detection function using a variable resistor comprising a. The method of claim 1, The variable resistance is, Is provided in a hinge (Hinge), the wireless communication terminal having an opening and closing detection function using a variable resistor, characterized in that the resistance value is changed as the folder is opened and closed. The method of claim 1, The variable resistance is, The resistance value increases as the metal plate moves away from the initial point of the resistor as the folder is lifted (opened), and the resistance value decreases as the metal plate approaches the initial point as the folder is closed (closed). Wireless communication terminal having an opening and closing detection function using a variable resistor. The method according to any one of claims 1 to 3, The process of the control means for detecting the opening and closing of the folder according to the voltage level, If the voltage level received from the voltage output means decreases below the preset value, the folder is sensed to be lifted (opened), and if the voltage level received from the voltage output means increases above the preset value, the folder is covered ( Wireless communication terminal having an open and close detection function using a variable resistor, characterized in that the sensing (closed). In the opening and closing detection method using a variable resistor in a wireless communication terminal, A resistance value changing step of changing a resistance value as the folder is opened and closed; A voltage output step of outputting a corresponding voltage level according to the changed resistance value; And Opening and closing detection step of detecting the opening and closing of the folder by detecting the change in the voltage level Switching detection method using a variable resistor in a wireless communication terminal comprising a. The method of claim 5, The resistance value change step, The resistance value increases as the metal plate moves away from the initial point of the resistor as the folder is lifted (opened), and the resistance value decreases as the metal plate approaches the initial point as the folder is closed (closed). Switching detection method using a variable resistor in a wireless communication terminal characterized in that. The method according to claim 5 or 6, The opening and closing detection step, If the voltage level is lower than the preset value, the folder is detected as being lifted (opened), and if the voltage level is increased above the preset value, the folder is detected as being closed (closed). Switching detection method using a variable resistor in.

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