KR19990061762A - Portable computer and screen scroll control circuit with virtual screen scroll function - Google Patents

Abstract

The present invention discloses a portable computer having a virtual screen scroll function and a screen scroll control circuit. The portable computer having a virtual screen scrolling function is located at the center of the computer main body and the main body of the computer, a display screen displaying a portion of the virtual screen larger than the actual screen, and located at one side of the main body of the computer. The first input unit to be selected, located on the other side of the computer main body, the second input unit receiving the amount of movement in the moving direction, and within the display screen according to the moving direction and the moving amount selected through the first and second selection means in the computer main body; And a screen scroll circuit for controlling the movement of the virtual screen in. The portable computer has a size that the user can hold by one hand and operate the first and second input units by one hand.

Description

Portable computer and screen scroll control circuit with virtual screen scroll function

The present invention relates to a portable computer, and more particularly, to a portable computer and a screen scroll control circuit having a function of scrolling a virtual screen larger than the actual screen.

In general, a hand-held computer is a small computer that is small enough to hold the computer in one hand and operate with the other. These include palm-top computers that fit in your pocket, notebook computers about the size of a notebook, and laptops that you can use on your lap. In addition, recently developed personal digital assistants (PDAs) also correspond to miniature computers with high functionality. These computers have a small liquid crystal display (LCD) screen as a monitor due to their size, and have a pen input device in addition to a small keyboard as an input means.

1 is a front view showing the appearance of a conventional portable computer having a pen input device, which is a main body 102 of a portable computer, a liquid crystal display screen 104 enabling contact input, an outer shell 106 of a liquid crystal display screen, and a software operating system. The full screen outer shell 108 of the pen input unit 110 is shown.

Referring to FIG. 1, the full screen outer portion 108 of the software operating system indicated by the dotted lines in the screen is almost coincident with the outer shell 106 of the physical liquid crystal display screen. In fact, Windows CE, a portable computer operating system developed by Microsoft, is designed to fill a physical small liquid crystal display screen. That is, the size of the hardware screen and the maximum size of the software screen is configured to match.

After the computer is booted, when the full screen of the operating system is displayed on the liquid crystal display screen 104 shown in FIG. 1, the user issues a command to the computer by using the small keyboard or the pen input unit 110 or the like. At this time, the user selects or executes a desired command while looking at the information displayed on the small liquid crystal display screen 104, while holding the computer with one hand and manipulating the small keyboard or pen input unit 110 with the other hand. do.

In such a portable computer, the small liquid crystal display screen has to display the entire screen of the operating system in a narrow screen, and thus there is a limit in displaying a large amount of information and a large information. Therefore, a larger virtual screen than the actual screen is required.

However, even if the window is opened on the small liquid crystal display screen to enable the page up / down function or the scroll function, the user holds the main body with one hand, so the other hand must operate the window using the small keyboard or pen input device. do. If the other hand is holding a device such as a mobile phone or a phone, it is not easy to retrieve data by scrolling the screen. In addition, even the smallest devices such as electronic notebooks are scrolled by a specific key, so if you hold the main body with one hand, you must use the screen scroll function with the other hand. That is, the conventional portable computer has a trouble in that both hands must be used even when the user simply wants to retrieve data displayed on the screen by the screen scroll function.

The technical problem to be achieved by the present invention is to virtually scroll the virtual screen function by showing a virtual screen larger than the actual screen through a small liquid crystal display screen by a simple operation by integrally integrating a separate input means for the screen scroll function to the main body It is to provide a portable computer having.

Another object of the present invention is to provide a screen scroll control circuit in the portable computer.

1 is a front view showing the appearance of a conventional portable computer having a pen input device.

Fig.2 (a)-(c) is a front view, a right side view, and a left side view which respectively show the external appearance of the portable computer by this invention.

3 is a block diagram of a screen scroll control circuit according to the present invention.

FIG. 4 is a flowchart for explaining a screen scroll control method performed by the control circuit shown in FIG. 3.

5 is a view for explaining the actual operation of the portable computer according to the present invention having a virtual screen scroll function.

In order to achieve the above object, a portable computer having a virtual screen scrolling function is located in the center of the computer body, the computer body, a display screen for displaying a portion of the virtual screen larger than the actual screen, located on one side of the computer body First input means for receiving the movement direction of the virtual screen, second input means for being located on the other side of the computer body, and receiving the movement amount in the movement direction, and the first and the And a screen scroll circuit for controlling the movement of the virtual screen within the display screen according to the movement direction and the movement amount selected by the second selection means, wherein the portable computer is held by one hand by the user and the first and The second input means has a size operable by the one hand do.

In order to achieve the above object, the screen scroll control circuit for controlling the movement of the virtual screen in the display screen in a portable computer displaying a portion of the virtual screen larger than the actual screen, the desired direction of movement is up or down or left and right directions A first input unit for inputting a first selection signal for discriminating application, a second input unit for inputting a second selection signal for determining a movement amount in the moving direction, and the virtual screen in response to the first and second selection signals And a display unit for outputting the virtual screen in response to the screen movement control signal.

Hereinafter, with reference to the accompanying drawings, the configuration and operation of a portable computer and a screen scroll control circuit having a virtual screen scroll function according to the present invention will be described.

2 (a) to 2 (c) are a front view, a right side view, and a left side view showing the appearance of a portable computer according to the present invention, respectively, where 202 is a computer body, 204 is a liquid crystal display screen, and 206 is a first input means. 208 denotes a rotary switch as a second input means.

Since a virtual screen larger than the actual screen is only partially displayed in the small liquid crystal display screen of the portable computer, a screen scroll function should be provided. The portable computer according to the present invention includes a button switch 206 and a rotary volume controller 208 as separate input means so that a user can easily scroll the screen when a virtual screen is to be displayed.

Specifically, the portable computer illustrated in FIG. 2 (a) is a wallet-type computer, and is basically located at the center of the computer main body 202 and the computer main body 202, and a portion of the virtual screen larger than the actual screen is shown. It consists of a display screen 204 for displaying. The button switch 206 is located at one side of the computer main body 202 and receives a movement direction of the virtual screen from the user. Correspondingly, for example, when the button switch 206 is pressed and turned on, the internal circuit may be configured to move the screen in the up and down direction, and to move the screen in the left and right direction when the button switch 206 is not pressed. The rotary volume controller 208 is located on the other side of the computer body 202 and receives a movement amount as the screen movement direction determined by the button switch 206 from the user. That is, after the screen movement direction is selected in the up-down direction or the left-right direction, the movement amount is selected in detail. The rotary volume controller 208 is a volume controller generally used in a radio, and is only one example for selecting a moving amount in the present invention. For example, a plurality of button switches may be used in place of the rotary volume controller 208.

Depending on the movement direction and the amount of movement selected through this button switch 206 and the rotary volume adjuster 208, the screen scroll circuit included in the computer main body 202 (described in detail later with reference to FIG. 3) is a liquid crystal display screen. The movement of the virtual screen in the 204 is controlled.

3 is a block diagram of a screen scroll control circuit according to the present invention, which includes internal input units 300 and 302, an input / output (IO) port 304, an analog-to-digital converter (ADC) 306, and a central processing unit (CPU) 308. ) And the liquid crystal display unit 310.

FIG. 4 is a flowchart for explaining a screen scroll control method performed by the control circuit shown in FIG. 3. Referring to FIG. 4, the operation of the screen scroll control circuit shown in FIG. 3 will be described in detail. As the switch SW illustrated as the internal input unit is pressed as the button-type switch 206 shown in FIG. Is actually turned on. The switch SW inputs a first selection signal for distinguishing whether a desired movement direction is an up-down direction or a left-right direction. On the other hand, in the variable resistor R illustrated as another internal input unit, the resistance value is changed as the rotary volume controller 208 shown in FIG. 2A is adjusted. The variable resistor R inputs a second selection signal that determines the amount of movement in the movement direction.

The CPU 308 first determines whether the current screen is a virtual screen (step 402), and if it is a virtual screen, determines whether the switch SW is turned on through the IO port 304 (step 404). When the switch SW is turned on to input the first selection signal, the CPU 308 reads the resistance value applied to the variable resistor R through the ADC 306 (step 406). According to the resistance value, the CPU 308 moves the virtual screen output through the liquid crystal display 310 in the left and right directions (operation 408). On the other hand, if the switching SW is not turned on in step 404, the CPU 308 reads the resistance value applied to the variable resistor R at this time through the ADC 306 (step 410), and the liquid crystal display 310 In operation 412, the virtual screen output through the image is moved in the vertical direction. Next, the CPU 308 continuously checks if the user wants to move another screen (step 414).

5 is a view for explaining the actual operation of the portable computer according to the present invention having a virtual screen scroll function, the body 502 of the portable computer, the liquid crystal display screen 504 to enable the touch input, the liquid crystal display screen An outer shell 506, a full screen outer shell 508 of the software operating system, a button switch 510, and a rotary volume controller 512 are shown. In addition, in order to explain when the user lifts the portable computer with one hand, 514 denotes the user's hand, 516 denotes an index finger, and 518 denotes a thumb.

As shown in Fig. 5, only a part of the virtual entire screen area of the software operating system indicated by the dotted line is displayed on the physical liquid crystal display screen. At this time, the user holds the portable computer with one hand to scroll the screen to view another part of the virtual screen, and also the button switch 510 and the rotary volume controller with the thumb 518 and the index finger 516 of the hand. 512) can be adjusted respectively. Therefore, the user can see the wide screen by a simple operation through the narrow screen.

As described above, the portable computer and the screen scroll control circuit having the virtual screen scroll function according to the present invention display a virtual screen larger than the actual screen, thereby making it inconvenient due to the narrow screen of the portable computer including an electronic notebook, PDA, and the like. In addition, there is an effect of showing a virtual screen by a simple operation through a small liquid crystal display screen.

Claims (4)

On a portable computer with virtual screen scrolling, Computer body; A display screen positioned in the center of the computer body and displaying a portion of a virtual screen larger than an actual screen; First input means positioned on one side of the computer main body and receiving a movement direction of the virtual screen; Second input means positioned on another side of the computer main body and receiving a movement amount in the movement direction; And A screen scroll circuit for controlling movement of the virtual screen within the display screen according to the movement direction and the movement amount selected through the first and second selection means in the computer main body, The portable computer has a virtual screen scroll function having a virtual screen scroll function, characterized in that the user has a size that can be manipulated by the one hand by holding the first and second input means by the user with one hand. The method of claim 1, wherein the first input means, And a button-type switch configured to select a moving direction of the virtual screen in one of a vertical direction and a left and right direction according to whether a button is selected by a user. The method of claim 1, wherein the second input means, A portable computer having a virtual screen scroll function, characterized in that it comprises a rotary volume controller for adjusting the amount of movement in the movement direction in accordance with the volume control by the user. In a screen scroll control circuit for controlling the movement of the virtual screen within the display screen in a portable computer that displays a portion of the virtual screen larger than the actual screen, A first input unit configured to input a first selection signal for discriminating whether a desired movement direction is an up-down direction or a left-right direction; A second input unit which inputs a second selection signal to determine the movement amount in the movement direction; A central processing unit generating a screen movement control signal for controlling movement of the virtual screen in response to the first and second selection signals; And And a display unit configured to output the virtual screen in response to the screen movement control signal.